1. A power-on and power-off control method is applied to a Battery Management System (BMS), wherein the BMS comprises a charged erasable programmable read-only memory (EEPROM) chip and a pluggable storage device, and the method comprises the following steps:

acquiring a power-on indication signal;

responding to the power-on indication signal, and determining a power-on mode;

and when the power-on mode is after-sales power-on, reading the stored data stored in the pluggable storage device and writing the stored data into the EEPROM chip.

2. The power-on and power-off control method according to claim 1, further comprising:

acquiring a power-off indicating signal;

responding to the power-off indication signal, and updating the current battery pack data information;

writing long-period data and short-period data in the battery pack data information into the EEPROM chip, and writing the long-period data into the pluggable storage device;

and executing a power-off process.

3. The power-up and power-down control method according to claim 1, wherein the determining a power-up mode includes:

reading preset zone bit information;

and when the preset zone bit information is a first numerical value, determining that the power-on mode is after-sales power-on.

4. A power-on and power-off control method according to claim 3, further comprising:

when the preset zone bit information is a second numerical value, determining that the power-on mode is power-on of a production line;

and when the power-on mode is power-on of a production line, writing the manufacturing information of the battery pack into the EEPROM chip.

5. The power-on and power-off control method according to claim 4, wherein after writing the stored data into the EEPROM chip and writing the manufacturing information of the battery pack into the EEPROM chip, the method further comprises:

setting the preset flag bit information as a third numerical value; the third value is used for indicating that the power-on mode is normal power-on.

6. The power-on and power-off control method according to claim 5, further comprising:

and when the power-on mode is normal power-on, reading data information in the EEPROM chip.

7. The power-up and power-down control method according to claim 1, wherein the stored data stored in the pluggable memory device includes at least one of:

the method comprises the following steps of battery pack manufacturing information, battery pack historical fault information, battery pack historical charging frequency information and battery health degree SOH information.

8. A power-on and power-off control device is applied to a Battery Management System (BMS), wherein the BMS comprises a charged erasable programmable read-only memory (EEPROM) chip and a pluggable storage device, and the device comprises:

the acquisition module is used for acquiring a power-on indication signal;

the judging module is used for responding to the power-on indicating signal and determining a power-on mode;

and the control module is used for reading the storage data stored in the pluggable storage device and writing the storage data into the EEPROM chip when the power-on mode is after-sale power-on.

9. The power up and down control device of claim 8, wherein the control module is further configured to:

acquiring a power-off indicating signal;

responding to the power-off indication signal, and updating the current battery pack data information;

writing long-period data and short-period data in the battery pack data information into the EEPROM chip, and writing the long-period data into the pluggable storage device;

and executing a power-off process.

10. The power-up and power-down control device according to claim 8, wherein the determining the power-up mode includes:

reading preset zone bit information;

and when the preset zone bit information is a first numerical value, determining that the power-on mode is after-sales power-on.

11. The power up and down control device of claim 10, wherein the control module is further configured to:

when the preset zone bit information is a second numerical value, determining that the power-on mode is power-on of a production line;

and when the power-on mode is power-on of a production line, writing the manufacturing information of the battery pack into the EEPROM chip.

12. The power-on and power-off control device of claim 11, wherein after writing the stored data to the EEPROM chip and writing the manufacturing information of the battery pack to the EEPROM chip, the control module is further configured to:

setting the preset flag bit information as a third numerical value; the third value is used for indicating that the power-on mode is normal power-on.

13. The power up and down control device of claim 12, wherein the control module is further configured to:

and when the power-on mode is normal power-on, reading data information in the EEPROM chip.

14. The power up and down control apparatus according to claim 8, wherein the stored data stored in the pluggable memory device includes at least one of:

the method comprises the following steps of battery pack manufacturing information, battery pack historical fault information, battery pack historical charging frequency information and battery health degree SOH information.

15. A vehicle characterized by comprising the power-on and power-off control apparatus according to any one of claims 8 to 14.

16. An electric power-on and power-off control apparatus, comprising: a memory, a processor and a program stored on the memory and executable on the processor, the program, when executed by the processor, implementing a power-up and power-down control method according to any one of claims 1 to 7.

Background

The conventional electric automobile is provided with a battery management system BMS, and the BMS is used for collecting historical data information of a vehicle battery pack and storing the historical data information in an electronic erasing type rewritable read-only memory EEPROM. When the BMS malfunctions, a method of replacing the BMS, rather than repairing the BMS, is currently employed. When the vehicle is replaced by a new BMS, historical data about the vehicle, such as the battery health SOH, stored in the replaced BMS cannot be effectively updated into the new BMS, so that the accuracy of the driving mileage of the vehicle is affected, and bad experience is brought to a user.

Disclosure of Invention

The invention aims to provide a power-on and power-off control method, a power-on and power-off control device, a vehicle and equipment, and aims to solve the problem that in the prior art, when a vehicle is replaced by a new BMS, historical data about the vehicle stored in the replaced BMS cannot be effectively updated into the new BMS, and the accuracy of the driving mileage of the vehicle is further influenced.

In order to achieve the above object, the present invention provides a power-on/power-off control method applied to a battery management system BMS, wherein the BMS includes a charged erasable programmable read only memory EEPROM chip and a pluggable memory device, including:

acquiring a power-on indication signal;

responding to the power-on indication signal, and determining a power-on mode;

and when the power-on mode is after-sales power-on, reading the stored data stored in the pluggable storage device and writing the stored data into the EEPROM chip.

Optionally, the power-on and power-off control method further includes:

acquiring a power-off indicating signal;

responding to the power-off indication signal, and updating the current battery pack data information;

writing long-period data and short-period data in the battery pack data information into the EEPROM chip, and writing the long-period data into the pluggable storage device;

and executing a power-off process.

Optionally, the determining the power-on mode includes:

reading preset zone bit information;

and when the preset zone bit information is a first numerical value, determining that the power-on mode is after-sales power-on.

Optionally, the power-on and power-off control method further includes:

when the preset zone bit information is a second numerical value, determining that the power-on mode is power-on of a production line;

and when the power-on mode is power-on of a production line, writing the manufacturing information of the battery pack into the EEPROM chip.

Optionally, after writing the storage data into the EEPROM chip and writing the manufacturing information of the battery pack into the EEPROM chip, the power-on and power-off control method further includes:

setting the preset flag bit information as a third numerical value; the third value is used for indicating that the power-on mode is normal power-on.

Optionally, the power-on and power-off control method further includes:

and when the power-on mode is normal power-on, reading data information in the EEPROM chip.

Optionally, the storage data stored in the pluggable storage device comprises at least one of:

the method comprises the following steps of battery pack manufacturing information, battery pack historical fault information, battery pack historical charging frequency information and battery health degree SOH information.

Another preferred embodiment of the present invention provides a power-on and power-off control apparatus applied to a battery management system BMS, wherein the BMS includes a charged erasable programmable read only memory EEPROM chip and a pluggable memory device, the apparatus comprising:

the acquisition module is used for acquiring a power-on indication signal;

the judging module is used for responding to the power-on indicating signal and determining a power-on mode;

and the control module is used for reading the storage data stored in the pluggable storage device and writing the storage data into the EEPROM chip when the power-on mode is after-sale power-on.

Optionally, the control module is further configured to:

acquiring a power-off indicating signal;

responding to the power-off indication signal, and updating the current battery pack data information;

writing long-period data and short-period data in the battery pack data information into the EEPROM chip, and writing the long-period data into the pluggable storage device;

and executing a power-off process.

Optionally, the determining the power-on mode includes:

reading preset zone bit information;

and when the preset zone bit information is a first numerical value, determining that the power-on mode is after-sales power-on.

Optionally, the control module is further configured to:

when the preset zone bit information is a second numerical value, determining that the power-on mode is power-on of a production line;

and when the power-on mode is power-on of a production line, writing the manufacturing information of the battery pack into the EEPROM chip.

Optionally, after writing the storage data to the EEPROM chip and writing the manufacturing information of the battery pack to the EEPROM chip, the control module is further configured to:

setting the preset flag bit information as a third numerical value; the third value is used for indicating that the power-on mode is normal power-on.

Optionally, the control module is further configured to:

and when the power-on mode is normal power-on, reading data information in the EEPROM chip.

Optionally, the storage data stored in the pluggable storage device comprises at least one of:

the method comprises the following steps of battery pack manufacturing information, battery pack historical fault information, battery pack historical charging frequency information and battery health degree SOH information.

Still another preferred embodiment of the present invention provides a vehicle including the power-up and power-down control device as described above.

Another preferred embodiment of the present invention provides a power-on and power-off control apparatus including: a memory, a processor and a program stored on the memory and executable on the processor, the program, when executed by the processor, implementing the power-up and power-down control method as described above.

The technical scheme of the invention has the following beneficial effects:

according to the power-on and power-off control method, the stored data stored in the pluggable storage device is read and the stored data is written into the EEPROM chip of the electrified erasable programmable read-only memory when the power-on mode is determined to be after-sale power-on by acquiring and responding to the power-on indication signal, so that the updating of the historical data in the new battery management system BMS can be realized. Through the updating of the historical data in the new BMS, the accuracy of the historical data in the new BMS can be ensured, and further the problems caused by the inaccuracy of the historical data, such as sudden change of the driving mileage of a vehicle, can be avoided, so that a driver can not accurately master the real driving mileage information of the vehicle, the driver can not arrive at a destination in time or can not charge the vehicle in time in the driving process of the vehicle, and the driving experience is reduced.

Drawings

FIG. 1 is a schematic flow chart of a power-on and power-off control method provided by the present invention;

FIG. 2 is a schematic diagram of a circuit device according to the present invention;

FIG. 3 is a flow chart illustrating a method for controlling a power-on process according to the present invention;

FIG. 4 is a flow chart illustrating a power down process control method according to the present invention;

fig. 5 is a schematic block diagram of a power-on/power-off control device according to the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments. In the following description, specific details such as specific configurations and components are provided only to help the full understanding of the embodiments of the present invention. Thus, it will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the invention. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In various embodiments of the present invention, it should be understood that the sequence numbers of the following processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.

It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

In the embodiments provided herein, it should be understood that "B corresponding to a" means that B is associated with a from which B can be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may be determined from a and/or other information.

Referring to fig. 1, a preferred embodiment of the present invention provides a power-up and power-down control method applied to a Battery Management System (BMS), wherein the BMS includes a charged Erasable Programmable read only memory (EEPROM) chip and a pluggable memory device, and the BMS is a "new BMS" described below. The pluggable memory device stores therein history data information of the BMS, and when the BMS is replaced due to a failure or other reasons, a worker removes the pluggable memory device from the replaced BMS and inserts the pluggable memory device into a new BMS.

The pluggable storage device may be a Secure Digital Memory Card (SD Card) or other storage devices with pluggable, readable, and writable functions.

Fig. 1 includes the following steps:

s101: and acquiring a power-on indication signal.

The power-on and power-off control method provided by the invention can be applied to a controller, and the controller can be a microcontroller MCU in the BMS or other controllers different from the MCU. The controller acquires the power-on signal through a power-on instruction sent by the whole vehicle controller.

S102: and responding to the power-on indication signal to determine a power-on mode.

The power-up modes include, but are not limited to: after-sale power-on, production line power-on and normal power-on.

Further, determining the power-up mode comprises: reading preset zone bit information; and when the preset zone bit information is a first numerical value, determining that the power-on mode is after-sales power-on.

The preset flag bit information may be a numerical value or a character corresponding to the preset flag bit, and the power-on modes corresponding to the preset flag bit information are set when the BMS leaves a factory. For example, when the preset flag bit information is a first numerical value, it indicates that the corresponding power-on mode is after-sales power-on; when the preset zone bit information is a second numerical value, the corresponding power-on mode is power-on of a production line; and when the preset zone bit information is a third numerical value, indicating that the corresponding power-on mode is normal power-on.

Further, the controller may read the flag bit information, and when the controller reads that the preset flag bit information is the first numerical value, it may determine that the power-on mode is after-market power-on, and then execute S103.

S103: and when the power-on mode is after-sales power-on, reading the stored data stored in the pluggable storage device and writing the stored data into the EEPROM chip.

The after-sale power-on is a general term, and can also be replaced by maintenance power-on, maintenance power-on or other names with similar meanings. The after-market power-up may include, but is not limited to, the following: the BMS fails to be replaced and the BMS is aged and needs to be replaced.

As described above, when the power-on mode is after-market power-on, that is, the BMS is replaced, the worker removes the pluggable memory device from the replaced BMS and inserts the pluggable memory device into the new BMS, wherein the stored data in the pluggable memory device is history data in the BMS before the replacement. Optionally, the storage data stored in the pluggable storage device comprises at least one of: the method comprises the following steps of battery pack manufacturing information, battery pack historical fault information, battery pack historical charging frequency information and battery health degree SOH information. When a new BMS is replaced, the controller reads the storage data stored in the pluggable storage device and writes the storage data into the EEPROM chip. The controller reads the stored data stored in the pluggable storage device and writes the stored data into the EEPROM chip, so that the data of the historical data of the BMS before replacement on the new BMS after replacement is updated, and a series of problems caused by inaccurate historical data on the new BMS due to the fact that the historical data cannot be updated are avoided. For example, the driver cannot accurately grasp the driving range information of the vehicle, so that the vehicle cannot arrive at the destination or be charged in time, and the driving experience is reduced.

The stored data including the battery pack history charging number information and the battery health SOH information will be described below.

The controller can accurately prompt the driving mileage information of the vehicle under different battery electric quantities according to the SOH information of the battery health degree. The driver passes through the mileage information of continuing a journey can be in when the electric quantity of battery package is less than preset electric quantity value, in time be the battery package charges, avoids the vehicle is in the long time travel when the electric quantity of battery package is less than preset electric quantity value leads to battery package insufficient voltage, and then influences the life of battery package. And the driver judges whether the electric quantity needs to be supplemented to the vehicle in advance according to the driving mileage information and the distance between the driver and the destination to be approached, so that the situation that the vehicle cannot reach the destination due to insufficient electric quantity in the driving process is avoided, and the driving experience is reduced.

The controller can be right according to battery package historical charging number of times information, can monitor the current life of battery package, when the historical charging number of times information of battery package reaches and predetermines the number of times of charging, the controller can indicate through display device on the vehicle to remind the driver to be right the battery package is changed, in order to avoid influencing the continuation of the journey mileage of vehicle.

Further, when the power-on mode determined in S102 is on-line power-on, the controller writes the manufacturing information of the battery pack into the EEPROM chip.

For example, when the information in S102 is the second value, it is determined that the power-up mode is line power-up. The power-on of the production line is a general term, and can also be summarized by power-on of production, power-on of factory or other names with similar meanings. When the power-on mode is power-on of a production line, the controller writes the manufacturing information of the battery pack into the EEPROM chip, so that when subsequent workers maintain or overhaul vehicles, the specific conditions of the battery pack can be mastered by checking the manufacturing information of the battery pack, and the service time, the service life or other indexes of the battery pack can be monitored.

Further, after writing the storage data to the EEPROM chip and writing the manufacturing information of the battery pack into the EEPROM chip, the method further includes: the power-up mode is set to normal power-up. Specifically, the preset flag bit information may be set to a third numerical value; the third value is used for indicating that the power-on mode is normal power-on. For example, the third value may be updated by the first value or the second value.

The controller may change the power-on mode from the after-sales power-on mode or the production line power-on mode to the normal power-on mode by setting the preset flag bit information to a third value for indicating that the power-on mode is the normal power-on mode, and the BMS may normally operate when the power-on mode is the normal power-on mode.

Further, when the power-on mode determined in S102 is normal power-on, data information in the EEPROM chip is read.

And when the controller finishes reading the data information in the EEPROM chip, the controller detects the state of the battery pack and acquires the current battery pack data information.

On the basis of each of the steps described above, the controller is further configured to:

acquiring a power-off indicating signal;

responding to the power-off indication signal, and updating the current battery pack data information;

writing long-period data and short-period data in the battery pack data information into the EEPROM chip, and writing the long-period data into the pluggable storage device;

and executing a power-off process.

Wherein the long-period data includes, but is not limited to, battery pack fault information, battery pack charging number information, and battery health SOH information; the short-period data includes, but is not limited to, battery pack voltage information, cell voltage information, and insulation resistance information at power-on. By writing the long-period data and the short-period data in the battery pack data information into the EEPROM chip, when the vehicle is restarted, the controller can reacquire the long-period data and the short-period data, so that the state of the battery pack is effectively monitored and effectively prompted. The long-period data in the battery pack data information is written into the pluggable storage device, so that the long-period data can be backed up. When the BMS breaks down and needs to be replaced, a worker can install the pluggable storage device on the replaced new BMS, so that the long-period data can be updated on the replaced new BMS, a series of problems caused by the fact that the long-period data cannot be updated are avoided, for example, the driving mileage of a vehicle cannot be accurately prompted, and the driving experience of a driver is reduced.

Next, the controller is taken as a Micro Control Unit (MCU) in the BMS, and the pluggable memory device is an SD Card for example.

As shown in FIG. 2, compared with the prior art, the present invention adds a circuit for connecting the MCU and the SD Card. In the figure, "W" represents writing, "R" represents reading, and the MCU can communicate with the EEPROM and the SD Card. When the power is on, the MCU can read the data in the EEPROM or the SD Card, and when the power is off, the MCU can respectively write the updated data into the EEPROM and the SD Card, thereby realizing the backup of the data in the EEPROM by the SD Card. When the BMS malfunctions and needs to be replaced, a worker may remove the SD Card from the BMS before the replacement and install the SD Card in a new BMS. And when the MCU determines that the power-on mode is after-sale power-on, the data of the SD Card can be read and written into the EEPROM, so that the data updating is realized. Therefore, the accuracy of the historical data in the BMS can be ensured, the problems caused by the inaccuracy of the historical data, such as the inaccuracy of the driving mileage of the vehicle, can be avoided, so that a driver can not accurately master the real driving mileage information of the vehicle, the driver can not arrive at a destination or charge the vehicle in time in the driving process of the vehicle, and the driving experience is reduced.

Further, referring to fig. 3, the operation performed by the MCU during power-on will be described in detail.

In fig. 3, "BMS _ MODE" indicates the preset flag bit information of the BMS, "AS" indicates after-market power-up, "Line" indicates on-Line power-up, and "Normal" indicates Normal power-up. When the MCU acquires a power-on instruction, the MCU can judge that the current power-on mode is one of after-sale power-on, production line power-on or normal power-on according to the preset zone bit information of the BMS. When the MCU acquires that the preset zone bit information of the BMS is a third numerical value, the current power-on mode can be determined to be normal power-on, wherein the normal power-on is used for quitting power-on of a production line or after-sales power-on, the normal power-on can be entered by one-way skip of the power-on of the production line or the after-sales power-on, and then the MCU reads data information in an EEPROM; when the MCU acquires that the preset flag bit information of the BMS is a second value, the current power-on mode can be determined as power-on-line, wherein the BMS on the production line is provided with an SD Card for mass production of normal battery packs, the MCU writes the manufacturing information of the battery packs into the EEPROM, and when the MCU finishes writing the manufacturing information of the battery packs into the EEPROM, the MCU sets the preset flag bit information as a third value for indicating that the power-on mode is normal power-on from the second value, namely, the power-on mode of the BMS is changed into normal power-on; when the MCU acquires that the preset zone bit information of the BMS is a first numerical value, the current power-on mode can be determined to be after-sales power-on, wherein after-sales power-on the BMS does not have an SD Card for maintenance and use of a fault battery pack, the MCU reads data in the SD Card, the data in the SD Card is data in the BMS before replacement, and the data in the SD Card can comprise battery pack manufacturing information, battery pack historical fault information, battery pack historical charging frequency information and battery health degree (SOH) information. And when the MCU reads the data in the SD Card, writing the battery pack manufacturing information, the battery pack historical fault information, the battery pack historical charging time information and the SOH information into the EEPROM. And when the MCU finishes writing the data in the SD Card into the EEPROM, the MCU sets the preset flag bit information as a third numerical value for indicating that the power-on mode is normal power-on from a first numerical value, namely the power-on mode of the BMS is changed into normal power-on. When the power-on mode of the BMS is normal power-on, the BMS may detect a state of a battery pack, acquire and update short-cycle data, and execute a corresponding instruction according to the state of the battery pack and a Vehicle Control Unit (VCU) state machine.

Further, referring to fig. 4, the operation performed by the MCU during power-down will be described in detail.

When the MCU acquires a power-off instruction, the MCU can update the long-period data and the short-period data of the battery pack according to the running state of the battery pack and write the updated long-period data and the updated short-period data of the battery pack into the EEPROM, and when the MCU finishes writing the updated long-period data and the updated short-period data of the battery pack into the EEPROM, the MCU can write the updated long-period data of the battery pack into the SD Card. And the MCU executes power-off operation when the updated long-period data of the battery pack are written into the SD Card, namely the BMS finishes power-off.

Based on the same technical concept as the above power-on and power-off control method, as shown in fig. 5, another preferred embodiment of the present invention further provides a power-on and power-off control device applied to a battery management system BMS, wherein the BMS includes a EEPROM chip and a pluggable memory device.

The device comprises:

an obtaining module 501, configured to obtain a power-on indication signal;

a determining module 502, configured to determine a power-on mode in response to the power-on indication signal;

and the control module 503 is configured to, when the power-on mode is after-sales power-on, read the storage data stored in the pluggable storage device, and write the storage data into the EEPROM chip.

Further, the control module 503 is further configured to:

acquiring a power-off indicating signal;

responding to the power-off indication signal, and updating the current battery pack data information;

writing long-period data and short-period data in the battery pack data information into the EEPROM chip, and writing the long-period data into the pluggable storage device;

and executing a power-off process.

Further, the determining the power-on mode includes:

reading preset zone bit information;

and when the preset zone bit information is a first numerical value, determining that the power-on mode is after-sales power-on.

Further, the control module 503 is further configured to:

when the preset zone bit information is a second numerical value, determining that the power-on mode is power-on of a production line;

and when the power-on mode is power-on of a production line, writing the manufacturing information of the battery pack into the EEPROM chip.

Further, after writing the storage data into the EEPROM chip and writing the manufacturing information of the battery pack into the EEPROM chip, the control module 503 is further configured to:

setting the preset flag bit information as a third numerical value; the third value is used for indicating that the power-on mode is normal power-on.

Further, the control module 503 is further configured to:

and when the power-on mode is normal power-on, reading data information in the EEPROM chip.

Further, the storage data stored in the pluggable storage device includes at least one of:

the method comprises the following steps of battery pack manufacturing information, battery pack historical fault information, battery pack historical charging frequency information and battery health degree SOH information.

Another preferred embodiment of the present invention provides a vehicle including the power-up and power-down control device as described above.

Still another preferred embodiment of the present invention provides a power-up and power-down control apparatus including: a memory, a processor and a program stored on the memory and executable on the processor, the program, when executed by the processor, implementing the power-up and power-down control method as described above.

Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.

It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.