1. The utility model provides a wiring system connects between test cable and equipment cable, the test cable includes anodal test wire and negative pole test wire, the equipment cable includes anodal equipment line and negative pole equipment line, its characterized in that, wiring system includes:

the testing device comprises a shell, wherein a wire passing part is arranged on the shell and used for leading the positive electrode testing wire, the negative electrode equipment wire and the positive electrode equipment wire into the shell;

the first clamping device is arranged in the shell and used for clamping the positive electrode test wire and the positive electrode equipment wire to form electrical connection;

the second clamping device is arranged in the shell and is arranged at an interval with the first clamping device, and the second clamping device is used for clamping the negative electrode test wire and the negative electrode equipment wire to form electrical connection; and

the controller is in communication connection with the first clamping device and the second clamping device, the first clamping device and the second clamping device can feed back clamping force data to the controller, and the controller is used for controlling and adjusting the clamping force of the first clamping device and the second clamping device according to the clamping force data.

2. The patching system of claim 1, wherein the first and second clamping devices each include a first clamping arm and a second clamping arm disposed opposite the first clamping arm, the first and second clamping arms being movable toward and away from each other to clamp or unclamp the test cable and the equipment cable.

3. The patching system of claim 2, wherein one of a side of the first clamping arm facing the second clamping arm and a side of the second clamping arm facing the first clamping arm is provided with a positioning portion for positioning the test cables and the equipment cables.

4. The wiring system of claim 3, wherein the other of the side of the first clamping arm facing the second clamping arm and the side of the second clamping arm facing the first clamping arm is provided with a mating portion;

one of the positioning portion and the fitting portion includes a protrusion, and the other of the positioning portion and the fitting portion includes a groove, and the protrusion is capable of extending into the groove when the first clamping arm and the second clamping arm approach each other, so that the first clamping arm and the second clamping arm clamp the test cable and the equipment cable.

5. The wiring system of claim 2, wherein one of said first and second clamp arms is provided with a pressure sensitive paper for detecting a clamping force between said first and second clamp arms.

6. The wiring system of claim 1, further comprising a spacer coupled to the housing interior to separate the housing interior into relatively independent first and second cavities;

the first clamping device is mounted to the first cavity, and the second clamping device is mounted to the second cavity.

7. The patching system of claim 1, further comprising a first digital display mounted to the housing, the first digital display being in communication with the controller to display the clamping force data.

8. The patching system of claim 1, further comprising a current detection device disposed proximate to the equipment cables and the test cables for obtaining current data of the equipment cables and the test cables;

the wiring system further comprises a second digital display which is arranged on the shell and is in communication connection with the current detection device so as to display the current data.

9. The patching system of claim 1, wherein the wire-crossing portion comprises a first set of wires and a second set of wires;

the first wire passing group comprises two first sub wire passing holes which are oppositely arranged on the shell, and the two first sub wire passing holes are respectively used for leading the anode test wire and the anode equipment wire into the shell;

the second wire passing group comprises two second sub wire passing holes which are oppositely arranged on the shell, and the two second sub wire passing holes are respectively used for leading the cathode test wire and the cathode equipment wire into the shell.

10. The wiring system of claim 1 wherein said housing defines an access opening communicating with the interior of said housing;

the connecting device further comprises a cover plate which is detachably connected to the shell to seal the operation opening.

Background

The electric automobile has good environmental protection performance, can protect the environment, can adjust the energy structure, relieve the energy shortage and guarantee the energy safety, and has become the consensus of governments and automobile industries of various countries for developing the electric automobile. The power battery pack is a key core component of the electric automobile, and the performance and the cost of the power battery pack directly influence the smooth large-scale popularization and application of the electric automobile. In addition, the energy storage battery pack is used as an important component of the smart grid, so that demand side management can be effectively realized, peak-valley difference between day and night is eliminated, and electric load is smoothed.

In order to ensure that the battery pack can achieve a set effect in the using process, an electrical performance verification test needs to be carried out on the battery pack before the battery pack leaves a factory. In the electrical property test process, a positive pole equipment line connected with the power battery is connected with the positive pole of the test charging and discharging cabinet, and a negative pole equipment line of the power battery is connected with the negative pole of the test charging and discharging cabinet. At present, the connection is usually realized by adopting a bolt tightening mode, and an insulating tape is wound and wrapped at the connection position.

However, the above connection method has a problem that the error of test data is large and the consistency of test results is poor.

Disclosure of Invention

Therefore, the wiring system capable of reducing the test error and improving the test result consistency is needed to solve the problems of large test data error and poor test result consistency in the electrical performance test process of the battery pack.

According to an aspect of the application, a wiring system is provided, connect between test cable and equipment cable, the test cable includes anodal test wire and negative pole test wire, the equipment cable includes anodal equipment line and negative pole equipment line, its characterized in that, the wiring system includes:

the testing device comprises a shell, wherein a wire passing part is arranged on the shell and used for leading the positive electrode testing wire, the negative electrode equipment wire and the positive electrode equipment wire into the shell;

the first clamping device is arranged in the shell and used for clamping the positive electrode test wire and the positive electrode equipment wire to form electrical connection;

the second clamping device is arranged in the shell and is arranged at an interval with the first clamping device, and the second clamping device is used for clamping the negative electrode test wire and the negative electrode equipment wire to form electrical connection; and

the controller is in communication connection with the first clamping device and the second clamping device, the first clamping device and the second clamping device can feed back clamping force data to the controller, and the controller is used for controlling and adjusting the clamping force of the first clamping device and the second clamping device according to the clamping force data.

In one embodiment, each of the first clamping device and the second clamping device includes a first clamping arm and a second clamping arm disposed opposite to the first clamping arm, and the first clamping arm and the second clamping arm can move toward or away from each other.

In one embodiment, a side of the first clamping arm facing the second clamping arm is provided with a first clamping piece, and a side of the second clamping arm facing the first clamping arm is provided with a second clamping piece which can be matched and connected with the first clamping piece;

when the first clamping arm and the second clamping arm are close to or far away from each other, the first clamping piece can stretch into or draw out of the second clamping piece so as to clamp or release the test cable and the equipment cable.

In one embodiment, the test device further comprises a connecting terminal, wherein the equipment cable and the test cable are connected to the connecting terminal and are positioned on the first clamping device and the second clamping device through the connecting terminal.

In one embodiment, the clamp force monitoring device further comprises a first digital display which is arranged on the shell and is in communication connection with the controller so as to display the clamp force data.

In one embodiment, the cable testing device further comprises a current detection device, wherein the current detection device is arranged close to the equipment cable and the test cable and used for acquiring current data of the equipment cable and the test cable;

the wiring system further comprises a second digital display which is arranged on the shell and is in communication connection with the current detection device so as to display the current data.

In one embodiment, the wiring system further comprises a separator, wherein the separator is coupled to the inside of the shell to separate the inside of the shell into a first cavity and a second cavity which are relatively independent;

the first clamping device is mounted to the first cavity, and the second clamping device is mounted to the second cavity.

In one embodiment, the method further comprises the following steps:

a first clamping force detector mounted to the first clamping device, the first clamping force detector for detecting the clamping force data of the first clamping device and feeding back the clamping force data to the controller;

a second clamping force detector mounted to the second clamping device, the second clamping force detector for detecting the clamping force data of the second clamping device and feeding back to the controller.

In one embodiment, the wire passing part comprises a first wire passing group and a second wire passing group;

the first wire passing group comprises two first sub wire passing holes which are oppositely arranged on the shell, and the two first sub wire passing holes are respectively used for leading the anode test wire and the anode equipment wire into the shell;

the second wire passing group comprises two second sub wire passing holes which are oppositely arranged on the shell, and the two second sub wire passing holes are respectively used for leading the cathode test wire and the cathode equipment wire into the shell.

In one embodiment, the shell is provided with an operation port communicated with the interior of the shell;

the connecting device further comprises a cover plate which is detachably connected to the shell to seal the operation opening.

In the wiring system, the anode equipment wire and the anode test wire are clamped on the first clamping device and are electrically connected; the negative electrode equipment wire and the negative electrode test wire are clamped on the second clamping device and electrically connected. The first clamping device and the second clamping device can feed back clamping force data to the controller, and the controller controls and adjusts the clamping force of the first clamping device and the second clamping device according to the clamping force data. Therefore, the clamping force change in the test process is reduced, the variation of the contact resistance is reduced, and the test precision is improved.

Drawings

FIG. 1 is a schematic structural diagram of a connecting device according to an embodiment of the present application;

FIG. 2 is a schematic view showing an internal structure of the connecting device shown in FIG. 1;

fig. 3 is a schematic view of a second clamping device of the coupling device shown in fig. 1.

100. A wiring system; 10. a housing; 11. a wire passing part; 13. an operation port; 20. a cover plate; 22. a pulling section; 30. a spacer; 40. a first clamping device; 50. a second clamping device; 51. a first clamp arm; 511. a first clamping member; 53. a second clamp arm; 531. a second clamping member; 60. a current detection device; 81. testing the cable; 811. a positive test line; 813. a negative test line; 83. an equipment cable; 831. a positive equipment wire; 833. a negative electrode device wire.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

The wiring system of the present application will be described below with reference to the accompanying drawings.

FIG. 1 is a schematic structural diagram of a connecting device according to an embodiment of the present application; FIG. 2 is a schematic view showing an internal structure of the connecting device shown in FIG. 1; fig. 3 is a schematic view of a second clamping device of the coupling device shown in fig. 1. For the purpose of illustration, only the structures described in connection with the present application are illustrated in the drawings.

The new energy automobile is an important automobile type, the electrical performance test needs to be carried out on the power battery pack in the product development process of the automobile power battery, and the equipment cable 83 for connecting the power battery and the test cable 81 for testing the charging and discharging cabinet are needed in the electrical performance test process. Specifically, a positive electrode equipment line 831 of the power battery is connected with a positive electrode test line 811 of the test charge and discharge cabinet, and a negative electrode equipment line 833 of the power battery is connected with a negative electrode test line 813 of the test charge and discharge cabinet.

The wiring connection system 100 disclosed in at least one embodiment of the present application, connected between the test cable 81 and the equipment cable 83, includes a housing 10, a first clamping device 40, and a second clamping device 50. The first and second clamping devices 40 and 50 are mounted inside the housing 10 for clamping positioning of the test cable 81 with the equipment cable 83.

In some embodiments, the housing 10 is provided with a wire passing portion 11, and the test cable 81 and the equipment cable 83 extend into the housing 10 through the wire passing hole 11. Further, the line passing part comprises a first line passing group and a second line passing group, the first line passing group comprises two first sub line passing holes which are oppositely arranged on the shell, the two first sub line passing holes are respectively used for leading the anode test line and the anode equipment line into the shell, the second line passing group comprises two second sub line passing holes which are oppositely arranged on the shell, and the two second sub line passing holes are respectively used for leading the cathode test line and the cathode equipment line into the shell. Furthermore, the first sub-wire through hole and the second sub-wire through hole are both circular in shape, and the diameter of the first sub-wire through hole and the second sub-wire through hole can be 90-110mm, so that the wire through is facilitated, and the internal heat dissipation is facilitated.

In some embodiments, the positive test wire 811 and the positive equipment wire 831 are clamped to the first clamping device 40 after passing through the wire passing portion 11 and are electrically connected, and the negative test wire 813 and the negative equipment wire 833 are clamped to the second clamping device 50 after passing through the wire passing portion 11 and are electrically connected. So, at the in-process of test, can effectively prevent positive negative pole mistake and touch to avoid the emergence of short circuit condition.

In some embodiments, each of the first and second clamping devices 40 and 50 includes a first clamping arm 51 and a second clamping arm 53 disposed opposite the first clamping arm 51, and the first and second clamping arms 51 and 53 can move toward and away from each other to clamp or unclamp the test cable 81 and the equipment cable 83.

In some embodiments, the first clamping arm 51 and the second clamping arm 53 are made of engineering plastic materials, so that the first clamping arm 51 and the second clamping arm 53 have insulating properties. Further, the first clamping arm 51 and the second clamping arm 53 are both made of engineering plastics such as polyetheretherketone or polyimide, so as to ensure the mechanical strength on the basis of ensuring the insulating property.

In practical application, when the first clamping arm 51 and the second clamping arm 53 are far away from each other, the dismounting stage of the equipment cable 83 after the test is finished may be performed, or the pre-mounting stage of the equipment cable 83 before the test is started may be performed; when the first and second clamp arms 51 and 53 are brought close to each other, it is possible to provide a clamping force to the device cable 83 and the test cable 81, and finally clamp and position the device cable 83 and the test cable 81. Therefore, the wiring workload can be reduced, and the test progress is accelerated.

In some embodiments, one of the side of the first clamp arm 51 facing the second clamp arm 53 and the side of the second clamp arm 53 facing the first clamp arm 51 is provided with a positioning portion 511, and the positioning portion 511 is used for positioning the test cable 81 and the equipment cable 83. So, made things convenient for the location installation of equipment cable 83 and test cable 81, shortened the overlap joint time of equipment cable 83 and test cable 81 to the test progress has been accelerated.

Further, the other of the side of the first clamp arm 51 facing the second clamp arm 53 and the side of the second clamp arm 53 facing the first clamp arm 51 is provided with a fitting portion 531.

In particular, in some embodiments, one of the positioning portion 511 and the mating portion 531 includes a protrusion, and the other of the positioning portion 511 and the mating portion 531 includes a groove, and the protrusion can protrude into the groove when the first and second clamping arms 51 and 53 approach each other, so that the first and second clamping arms 51 and 53 clamp the test cable 81 and the equipment cable 83. So, can make things convenient for the dismouting of equipment cable 83 and test cable 81 to accelerate the test progress.

In some embodiments, the positive test wire 811 and the negative test wire 813 may be previously positioned on the first clamping arm 51 and the second clamping arm 53, respectively. In practical application, the positive electrode test wire 811 and the negative electrode test wire 813 are already positioned on the first clamping arm 51 and the second clamping arm 53, respectively, so that only the assembling and disassembling operations of the positive electrode equipment wire 831 and the negative electrode equipment wire 833 are needed to perform a test, and a subsequent test can be performed. So, can effectively avoid the incident that positive and negative level mistake was taken the line and is caused, can also avoid the wearing and tearing that frequent dismouting test cable 81 caused to effectively prolong test cable 81's life, and improve the accuracy of test experiment result.

Specifically, in some embodiments, the wiring system 100 further includes connection terminals to which the equipment cable 83 and the test cable 81 are connected and positioned between the first clamping device 40 and the second clamping device 50 by the connection terminals. More specifically, the connection terminal may be an OT terminal provided at the connection end of the device cable 83 and the test cable 81. So, can enough reduce the wearing and tearing of test cable 81, improve the uniformity of test result, can also make things convenient for equipment cable 83 and test cable 81 overlap joint to form electric connection. Specifically, in practical use, after the connection terminals of the device cable 83 and the test cable 81 are stacked together, the first clamp arm 51 is lowered relative to the second clamp arm 53 along the first direction, and clamping and positioning of the device cable 83 and the test cable 81 are completed.

It can be understood that, in the actual use process, firstly, due to the fact that the connection terminals are frequently screwed, the connection terminals are seriously abraded, positive pressure of a joint surface is insufficient, contact resistance is increased, further, the error of test data is large, and the consistency of test results is poor. Secondly, the connection terminal may occasionally come loose during the test process, which may cause the electrical connection between the device cable 83 and the test cable 81 to be interrupted, thereby causing test data abnormality. In addition, the battery life test time is long, the friction probability of the test cable 81 is increased due to the movement of the equipment in long-term test activities, and the test cable 81 vibrates along with the equipment in the comprehensive charging and discharging process, so that the short circuit caused by the mistaken contact of the positive electrode and the negative electrode is easy to occur, and the fire hazard is caused.

In some embodiments, therefore, the patching system 100 further includes a controller in communication with the first clamping device 40 and the second clamping device 50, the first clamping device 40 and the second clamping device 50 being capable of feeding back clamping force data to the controller, and the controller adjusting the clamping force of the first clamping device 40 and the second clamping device 50 based on the clamping force data. Particularly, in the long-term test process, the first clamping device 40 and the second clamping device 50 are adjusted by setting the parameters of the controller, so that the clamping force is stabilized in a preset range, and the consistency of the contact resistance in the test process is ensured. Therefore, the contact resistance error can be eliminated, and the data accuracy of the test is improved.

In some embodiments, one of the first clamp arm 51 and the second clamp arm 53 is provided with a pressure sensing paper for detecting a clamping force between the first clamp arm 51 and the second clamp arm 53.

In some embodiments, the wiring connection system 100 further comprises a first digital display, which is installed inside the housing 10 and is in communication with the controller to display the clamping force data of the controller. It is understood that the first digital display may be located outside the housing 10, and the application is not limited thereto.

Particularly, in the actual application, whether the clamping force applied to the equipment cable 83 and the test cable 81 by the first clamping device 40 and the second clamping device 50 is consistent or not can be known through the clamping force data fed back by the first digital display, if the clamping force is inconsistent, the first clamping device 40 and the second clamping device 50 are adjusted to the preset clamping force range through the controller in time, so that the contact resistance error is eliminated, and the accuracy of the test data is improved.

Note that, when the device cable 83 and the test cable 81 are detached from each other, the detachment needs to be performed in the case of power failure. The host computer can show the electric current size that flows through equipment cable 83 and test cable 81 in real time, therefore, operating personnel can judge the circular telegram condition of present wiring system 100 through the host computer. However, the upper computer software has a stuck phenomenon, which causes the operator to misjudge the power-on condition of the wiring system 100.

Therefore, in some embodiments, the wiring system 100 further includes a current detection device 60, and the current detection device 60 is disposed near the equipment cable 83 and the test cable 81 and is used for acquiring current data of the equipment cable 83 and the test cable 81. Further, the wiring system 100 further includes a second digital display installed inside the housing 10, and the second digital display is connected to the current detection device 60 by signals to display the current data of the current detection device 60. So, can effectively avoid operating personnel to take place the danger of electrocuteeing. It is understood that the second digital display may be located outside the housing 10, and the application is not limited thereto.

In some embodiments, the wiring system 100 further includes a spacer 30, and the spacer 30 is coupled to the inside of the housing 10 to separate the inside of the housing 10 into a first cavity and a second cavity which are relatively independent. Further, the first clamping device 40 is mounted to the first cavity, and the second clamping device 50 is mounted to the second cavity. Therefore, the positive and negative electrode wiring areas can be separated, and the situation that the positive and negative electrodes touch the short circuit by mistake is prevented.

In some embodiments, the partition 30 may be a partition board embedded inside the housing 10, and divides the inner space of the housing 10 into a first cavity and a second cavity with the same volume. Specifically, in practical applications, the positive test wire 811 and the positive equipment wire 831 are clamped by the first clamping device 40 in the first cavity, and the negative test wire 813 and the negative equipment wire 833 are clamped by the second clamping device 50 in the second cavity. So, can prevent effectively that positive negative pole mistake from touching the short circuit condition and taking place.

In some embodiments, the shape of the housing 10 may be a cube, a cuboid, a cylinder, or other shapes, and the present application is not limited in this application. In the present embodiment, the housing 10 has a square outer shape.

Further, the wall thickness of each face of the square housing 10 is 10mm to ensure the mechanical strength of the housing 10. The housing 10 may have an outer dimension of 400 mm. In fact, the dimensions of the housing 10 may also be varied as desired.

Further, the housing 10 is provided with an operation port 13 communicating with the inner space of the housing 10. In some embodiments, the operation opening 13 may be formed by removing a wall of the housing 10 having a square shape. Specifically, in practical use, an operator can attach and detach the device cable 83 and the test cable 81 through the operation port 13.

It can be understood that, because the casing 10 has an operation port 13 communicated with the inner space of the casing 10, there is an electric shock risk during the test, which causes a great safety hazard to the operator.

Therefore, in some embodiments, the wiring connection system 100 further includes a cover plate 20, and the cover plate 20 is detachably connected to the housing 10 to close the operation opening 13. Specifically, in some embodiments, a cover positioning hole is formed by cutting out a portion of a wall surface of the housing 10 perpendicular to the operation opening 13, and a cover positioning groove is formed on an inner wall surface of the housing 10 opposite to the cover positioning hole. Furthermore, the orthographic projection of the cover plate positioning hole facing the cover plate positioning groove is completely overlapped with the cover plate positioning groove.

Specifically, in practical use, after the assembling and disassembling operation of the device cable 83 and the test cable 81 is completed, one end of the cover plate 20 is inserted into the cover plate positioning hole of the housing 10 and finally positioned in the cover plate positioning groove to close the operation opening 13 of the housing 10. Therefore, the personal safety of operators can be effectively protected in the test process.

Furthermore, a lifting portion 22 is disposed at an end of the cover plate 20 away from the positioning groove of the cover plate 20, so that an operator can conveniently lift the cover plate 20, and the convenience of the wiring system 100 is improved.

Further, the cover plate 20 is made of a transparent material. In particular, in some embodiments, the cover plate 20 may be made of a transparent resin material such as PP or perspex. It is to be understood that the above description is intended to be illustrative only and is not intended to be limiting. In other embodiments, the housing 10 may be made of the same material as the cover plate 20 for cost saving. Thus, the operator can observe the internal condition of the housing 10 in real time conveniently. Such as the clamping and current conditions of the equipment cable 83 and the test cable 81 within the housing 10.

In the wiring system 100, the first clamping device 40, the second clamping device 50 and the controller are cooperatively matched, so that the clamping force applied to the equipment cable 83 and the test cable 81 is stabilized within a preset range, the contact resistance error is eliminated, and the data accuracy of a test is improved.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.