Battery assembly testing device and testing system

Abstract

The invention relates to a battery assembly test device and a test system. The device comprises a mounting plate, wherein the mounting plate is provided with a first mounting part and a second mounting part; the circuit board limiting structure is arranged on the first mounting part and used for limiting a circuit board, and the circuit board is provided with at least one electric connection part; the battery limiting assembly is mounted on the second mounting part and is used for clamping the battery unit so as to limit the electrode of the battery unit to a position opposite to the electric connecting part; the driving device is matched with the battery limiting assembly and used for driving the battery limiting assembly to be close to or far away from the circuit board, so that the electrodes of the battery units are in contact with or far away from the electric connection parts; and the code scanning device is used for scanning the identification code on the battery unit and / or the circuit board. According to the scheme provided by the invention, the short circuit risk caused by reverse polarity of the battery unit can be avoided, and automatic and accurate testing of the battery unit before assembly is realized.

Description

Technical Field

[0001] The present application relates to the field of new energy technology, and in particular to a battery assembly test device and system. Background Art

[0002] As new energy is developing rapidly, the industry's requirements for battery design are increasing. Battery assembly testing is a key step to ensure battery performance and safety.

[0003] In the related art, battery assembly testing relies on manual labor or the assistance of simple jigs. For example, during the test, the staff inserts the protection plate to press the jig down, manually reads the test data and determines whether it is qualified. If it is qualified, it will be removed from the machine. If there are defective products, they will be picked out. This solution is not only prone to short circuits due to inverted batteries, but also manual operation and judgment cannot effectively prevent incorrect battery assembly. Summary of the invention

[0004] In order to solve or partially solve the problems existing in the related art, the present application provides a battery assembly testing device and a testing system, which can avoid the risk of short circuit caused by the reverse polarity of the battery cell, and at the same time ensure that the position arrangement of the battery cell relative to the circuit board is consistent with the placement position and direction of the battery cell in the subsequent laser welding process, thereby ensuring that there is no risk of mixing before the battery pack is formed after welding, thereby realizing automatic and precise testing of the battery cell before assembly.

[0005] The first aspect of the present application provides a battery assembly test device, comprising:

[0006] A mounting plate, wherein the mounting plate is provided with a first mounting portion and a second mounting portion;

[0007] A circuit board limiting structure, provided on the first mounting portion, for limiting the circuit board, wherein the circuit board is provided with at least one electrical connection portion, and the electrical connection portion is used to be connected to an electrode of a battery unit;

[0008] A battery limiting assembly, mounted on the second mounting portion, for clamping the battery unit to limit the electrode of the battery unit to a position opposite to the electrical connection portion;

[0009] A driving device, in transmission cooperation with the battery limiting assembly, for driving the battery limiting assembly to move closer to or farther from the circuit board, so that the electrode of the battery unit contacts or moves away from the electrical connection portion;

[0010] The code scanning device is used to scan the identification code on the battery unit and / or the circuit board, and identify the placement state of the battery unit on the battery limiting assembly based on the identification code.

[0011] In one implementation, the battery limiting assembly includes a movable block movably mounted on the mounting plate, a second limiting groove is provided on the upper side of the movable block, and the second limiting groove is used to accommodate and limit the battery unit; the driving device is used to drive the movable block to rise and fall.

[0012] In one implementation, it also includes a push block, which is arranged at the bottom of the movable block, and the upper surface of the push block is in contact with the bottom surface of the movable block; the driving device includes a power source and a lifting rod, the power source is used to drive the lifting rod to extend and retract, and the lifting rod is connected to the push block.

[0013] In one implementation, a recessed portion is formed on the upper side of the mounting plate, the circuit board limiting structure and the battery limiting assembly are both arranged in the recessed portion, a first mounting portion is arranged in the middle of the recessed portion, and two second mounting portions are arranged on both sides of the first mounting portion; the circuit board limiting structure includes a slot block for placing a circuit board, the first mounting portion includes a limiting slot arranged on the mounting plate, and the limiting slot is used to accommodate and limit the slot block;

[0014] A notch is provided on the side of the mounting plate, and the notch is used to accommodate the push block. At least a portion of the movable block covers the notch in the vertical direction and contacts the top of the push block 1 at the notch.

[0015] In one implementation, at least two battery limiting assemblies are provided, and at least two of the battery limiting assemblies are arranged on both sides of the circuit board limiting structure; the top of the pushing block simultaneously contacts the bottom of the movable blocks of at least two of the battery limiting assemblies, so as to push the movable blocks of at least two of the battery limiting assemblies to rise and fall synchronously.

[0016] In one implementation, the code scanning device includes a first code scanning gun and a second code scanning gun, the first code scanning gun is used to scan the identification code on the battery unit, and the second code scanning gun is used to scan the identification code on the circuit board;

[0017] There are at least two battery limit assemblies, and the number of the first barcode scanners is consistent with the number of the battery limit assemblies and corresponds one to one.

[0018] In one implementation, the first barcode scanner corresponding to the battery limit assembly on one side of the circuit board is arranged above the mounting plate, for scanning the identification code on the upper surface of the battery cell; the first barcode scanner corresponding to the battery limit assembly on the other side is arranged below the mounting plate, for scanning the identification code on the lower surface of the battery cell.

[0019] In one implementation, it also includes a code scanning sensor, which is used to sense the battery unit, and the first code scanning gun is used to perform automatic code scanning according to the sensing information of the battery unit.

[0020] In one implementation, it also includes a control device and an electronic switch, the signal input end of the electronic switch is electrically connected to the control device, and the signal output end of the electronic switch is electrically connected to the drive device, and the control device is used to control the state of the electronic switch according to preset control information to control the operation of the drive device.

[0021] A second aspect of the present application provides a testing system, comprising:

[0022] The battery assembly test device as described in the first aspect above; and

[0023] A computer device is connected to the battery assembly test device via a communication serial port, and is used to receive identification data from a code scanning device and control the operation of the drive device based on the identification data.

[0024] The technical solution provided by this application may have the following beneficial effects:

[0025] The battery assembly test device provided by the present application has a battery limiting component that can limit the battery cell, a circuit board limiting structure that can limit the circuit board, a code scanning device that can scan the identification code on the battery cell and / or the circuit board to obtain status information of the battery and / or the circuit board, and a driving device that can drive the battery limiting component to move closer to or away from the circuit board so that the electrodes of the battery cell contact or move away from the electrical connection part. In this way, before the battery is placed in the battery limiting component, the contact between the battery cell ears and the electrical connection part of the circuit board can be blocked, and the risk of short circuit caused by reverse polarity of the battery cell can be avoided. At the same time, it ensures that the position arrangement of the battery cell relative to the circuit board is consistent with the placement position and direction of the battery cell in the subsequent laser welding process, thereby ensuring that there is no risk of mixing before the battery pack state after welding, thereby realizing automatic and accurate testing of the battery cell before assembly.

[0026] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and other objects, features and advantages of the present application will become more apparent by describing in more detail exemplary embodiments of the present application in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present application.

[0028] Figure 1 is a schematic diagram of the overall structure of a battery assembly test device shown in an embodiment of the present application;

[0029] Figure 2 yes Figure 1 A local enlarged schematic diagram of the middle A;

[0030] Figure 3 It is a schematic diagram of the cooperation between the driving device and the battery limiting assembly of the battery assembly test device shown in the embodiment of the present application;

[0031] Figure 4 It is a schematic diagram of the cooperation between the battery unit and the circuit board of the battery assembly test device shown in the embodiment of the present application;

[0032] Figure 5 is a schematic diagram of the bottom structure of a mounting plate of a battery assembly test device shown in an embodiment of the present application;

[0033] Figure 6 is a schematic diagram of the top structure of a mounting plate of a battery assembly test device shown in an embodiment of the present application;

[0034] Figure 7 is a schematic diagram of the coordination between the movable block and the battery unit of the battery assembly test device shown in the embodiment of the present application;

[0035] Figure 8 It is a schematic diagram of the bottom structure of the movable block of the battery assembly test device shown in the embodiment of the present application.

[0036] Reference numerals: 100, mounting plate; 101, recessed portion; 102, notch; 103, through hole; 104, second mounting portion; 105, first mounting portion; 106, rotating mechanism; 110, circuit board limiting structure; 111, slot block; 120, battery limiting assembly; 121, movable block; 122, battery limiting slot; 123, limiting wall; 124, elastic pressing block; 1241, elastic member; 1242, pressing plate; 12 5. Scanning hole; 126. Support surface; 1201. Tail; 1202. End; 130. Scanning device; 131. Bracket; 132. Scanning gun; 140. Driving device; 141. Power source; 142. Lifting rod; 143. Connecting block; 144. Pushing block; 200. Battery unit; 210. Tab; 220. Identification code; 300. Circuit board; 310. Pad; 320. Electrical connection part; 400. Box. DETAILED DESCRIPTION

[0037] The embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0038] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The singular forms of "a", "said" and "the" used in this application and the appended claims are also intended to include plural forms unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0039] It should be understood that although the terms "first", "second", "third", etc. may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of this application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0040] In the related art, battery assembly testing relies on manual work or the assistance of simple jigs. For example, during the test, the staff puts in the protection plate to press the jig, manually reads the test data and determines whether it is qualified. If it is qualified, it will be removed from the machine. If there are defective products, they will be selected. This solution is not only prone to short circuits due to reversed batteries, but also manual operation and judgment cannot effectively prevent incorrect battery assembly. In response to the above problems, the embodiments of the present application provide a battery assembly test device and a test system, which can avoid the risk of short circuits caused by reversed polarity of battery cells, and at the same time ensure that the position arrangement of the battery cells relative to the circuit board is consistent with the placement position and direction of the battery cells in the subsequent laser welding process, thereby ensuring that there is no risk of mixing before the battery pack state after welding, and realizing automatic and accurate testing of battery cells before assembly.

[0041] The technical solution of the embodiments of the present application is described in detail below with reference to the accompanying drawings.

[0042] Figure 1 is a schematic diagram of the overall structure of a battery assembly test device shown in an embodiment of the present application; Figure 2 yes Figure 1 A local enlarged schematic diagram of the middle A; Figure 3 It is a schematic diagram of the cooperation between the driving device and the battery limiting assembly of the battery assembly test device shown in the embodiment of the present application;

[0043] See also Figure 1 to Figure 3 , the present application provides a battery assembly test device, comprising:

[0044] A mounting plate 100, wherein the mounting plate is provided with a first mounting portion and a second mounting portion;

[0045] A circuit board limiting structure 110 is provided at the first mounting portion, and is used to limit the circuit board 300, wherein at least one electrical connection portion 320 is provided on the circuit board 300, and the electrical connection portion 320 is used to connect to the electrode of the battery unit 200;

[0046] The battery limiting assembly 120 is installed on the second installation portion, and is used to clamp and limit the battery unit 200, so as to limit the electrode of the battery unit 200 to a position opposite to the electrical connection portion 320;

[0047] The driving device 140 is in transmission cooperation with the battery limiting assembly 120 to drive the battery limiting assembly 120 to approach or move away from the circuit board 300 so that the electrodes of the battery unit 200 contact or move away from the electrical connection portion 320;

[0048] The code scanning device 130 is used to scan the identification code 220 on the battery unit 200 and / or the circuit board 300 , and identify the placement state of the battery unit 200 on the battery limiting assembly 120 based on the identification code 220 .

[0049] The solution of the present application can avoid the risk of short circuit caused by reverse polarity of battery cells, while ensuring that the position arrangement of the battery cell 200 relative to the circuit board 300 is consistent with the placement position of the battery cell 200 in the laser welding process, thereby ensuring that there is no risk of mixing before welding into a battery pack state, thereby realizing automatic and accurate testing of the battery cells before assembly.

[0050] The battery cell 200 of the present application may be a square battery cell, the electrodes of the battery cell 200 include a positive electrode tab and a negative electrode tab, the positive electrode tab and the negative electrode tab are arranged on the same side of the battery cell 200 body, and the electrical connection portion 320 may be a pad 310 on the circuit board 300 for welding with the positive electrode tab and the negative electrode tab. The identification code may be a QR code or a barcode printed on the surface of the battery cell, and the code scanning device 130 includes a code scanning gun, which can scan the QR code or the barcode on the surface of the battery cell to identify the status information of the battery cell.

[0051] The circuit board 300 may be a PCBA (Printed Circuit Board Assembly), and the circuit board 300 is used to assemble the battery cells 200 into a battery module.

[0052] The battery assembly test device provided in the present application has a battery limiting component 120 that can limit the battery cell 200, a circuit board limiting structure 110 that can limit the circuit board 300, and a code scanning device 130 that can scan the identification code 220 on the battery cell 200 and / or the circuit board 300 to obtain status information of the battery cell 200 and / or the circuit board 300. The driving device 140 can drive the battery limiting component 120 to approach or move away from the circuit board 300 so that the electrode of the battery cell 200 contacts or moves away from the electrical connection part 320. In this way, before the battery cell 200 is placed in the battery limiting component 120 in the correct state, the contact between the battery cell 200 pole ear 210 and the electrical connection part 320 of the circuit board 300 can be blocked, and the risk of short circuit caused by the reverse polarity of the battery cell can be avoided. At the same time, it is ensured that the position arrangement of the battery cell 200 relative to the circuit board 300 is consistent with the placement position and direction of the battery cell in the subsequent laser welding process, thereby ensuring that there is no risk of mixing before the welding becomes a battery pack state.

[0053] See also Figure 6 and Figure 7 In this embodiment, a recessed portion 101 with a specific structure is provided on the upper side of the mounting plate 100, and the recessed portion 101 can be formed by laser engraving. The circuit board limiting structure 110 and the battery limiting assembly 120 are both provided in the recessed portion 101. A first mounting portion 105 is provided in the middle of the recessed portion 101, and second mounting portions 104 are provided on both sides of the first mounting portion 105. The circuit board limiting structure 110 includes a slot block 111 for placing the circuit board 300. The first mounting portion 105 includes a limiting slot provided on the mounting plate 100, and the limiting slot is used to accommodate and limit the slot block 111, thereby limiting the circuit board 300. In some embodiments, the second mounting portion 104 includes a supporting platform formed on the bottom wall of the recessed portion 101, and the battery limiting assembly 120 is supported and limited on the supporting platform.

[0054] In this embodiment, the slot block 111 can be detachably installed in the limiting slot and fixed relative to the limiting slot; the limiting slot and the slot block structure of corresponding structure can be set according to the different structures of the circuit board 300, and a magnetic part for adsorbing the slot block and / or a positioning column for the limiting slot block 111 can be set in the limiting slot, thereby improving the position stability of the circuit board 300.

[0055] In this embodiment, the slot block 111 may be a groove with an opening facing upward. After the circuit board 300 is placed in the groove of the slot block 111, the electrical connection portion 320 faces upward. In some embodiments, the circuit board 300 is provided with a plug-in portion, and an opening is provided at the bottom of the slot block 111. The plug-in portion is located at the opening. The plug-in portion is used to connect the circuit board 300 and external electronic testing equipment through a cable.

[0056] See also Figure 3 to Figure 5In this embodiment, after the battery cell 200 is clamped in the battery limiting assembly 120, the tab 210 of the battery cell 200 overlaps with the electrical connection portion 320 in the vertical direction, that is, the electrode of the battery cell 200 is opposite to the electrical connection portion 320 on the circuit board 300 in the vertical direction, and the driving device 140 is used to drive the battery limiting assembly 120 to approach or move away from the circuit board 300 in the vertical direction. When the driving device 140 is used to drive the battery limiting assembly 120 to approach the circuit board 300 in the vertical direction, the tab 210 of the battery cell 200 can contact the electrical connection portion 320; when the driving device 140 is used to drive the battery limiting assembly 120 to move away from the circuit board 300 in the vertical direction, the tab 210 of the battery cell 200 can separate from the electrical connection portion 320.

[0057] In the present application, the driving device 140 can accurately control the displacement of the battery limiting assembly 120 in the vertical direction, and further control whether the tab 210 of the battery unit 200 is in contact with the electrical connection portion 320 .

[0058] In some embodiments, the battery limiting assembly 120 includes a movable block 121 movably mounted on the mounting plate 100 , a battery limiting groove 122 is provided on the upper side of the movable block 121 , and an elastic pressing block 124 is provided on one side of the battery limiting groove 122 , and the elastic pressing block 124 is used to press the battery unit 200 accommodated in the battery limiting groove 122 .

[0059] See also Figure 2 and Figure 7 The movable block 121 includes a tail portion 1201 and an end portion 1202, the tail portion 1201 is away from the circuit board limiting structure 110, and the end portion 1202 is close to the circuit board 300 limiting structure 110. When the battery is placed in the battery limiting groove 122, one side of the battery ear 210 is close to the end portion 1202. The movable block 121 is movably connected to the mounting plate 100 through the rotating mechanism 106, the sliding mechanism or the guiding mechanism. The driving device 140 can drive the end portion 1202 to rise or fall, thereby causing the ear 210 of the battery unit 200 to rise or fall relative to the circuit board 300.

[0060] A supporting surface 126 is provided at the bottom of the limiting groove 122, and the bottom of the battery cell 200 is supported on the supporting surface 126. A limiting wall 123 is provided on the side of the limiting groove 122, and an elastic pressure block 124 is provided on the opposite side of the limiting wall 123. One side of the battery cell 200 is pressed against the limiting wall 123, and the other side is pressed against the elastic pressure block 124. In this embodiment, the limiting groove 122 is inclined. After the battery cell 200 is limited, the height of one end where the battery pole ear 210 is located is lower than the other end opposite to the pole ear 210, wherein the end of the pole ear 210 is bent. When the battery cell 200 is in the limited state, the end of the pole ear 210 is horizontal and roughly parallel to the pad 310 of the circuit board 300.

[0061] See also Figure 7 In this embodiment, an elastic member 1241 is provided on the opposite side of the limiting wall 123 , the elastic member 1241 is fixed by a pressing plate 1242 , and the elastic pressing block 124 is connected to the elastic member. Under the elastic force of the elastic member 1241 , the elastic pressing block 124 presses the battery unit 200 .

[0062] See also Figure 3 In some embodiments, a push block 144 is further included. The push block 144 is arranged at the bottom of the movable block 121. The upper surface of the push block 144 contacts the bottom surface of the movable block 121. The driving device 140 includes a power source 141, a lifting rod 142 and a connecting block 143. The power source 141 is used to drive the lifting rod 142 to extend and retract. The lifting rod 142 is connected to the connecting block 143, and the connecting block 143 is connected to the push block 144.

[0063] It is worth noting that the power source of this embodiment can be a cylinder, but is not limited to a cylinder, and can also be a motor.

[0064] In an embodiment of the present application, at least two battery cells 200 can be connected to a circuit board 300, and accordingly, a circuit board limiting structure 110 can be correspondingly provided with at least two battery limiting assemblies 120. According to the relative position relationship between the battery cell and the circuit board, at least two battery limiting assemblies 120 are arranged on both sides of the circuit board 300 limiting structure 110.

[0065] Continue to see Figure 6 In this embodiment, a notch 102 is provided on one side of the mounting plate 100, and the notch 102 is used to accommodate the push block 144. At least a portion of the movable block 121 of the battery limiting assembly 120 covers the notch 102 in the vertical direction, and contacts the top of the push block 144 at the notch 102. In this embodiment, the push block 144 contacts the movable blocks 121 of at least two battery limiting assemblies 120 at the notch 102 at the same time, and can push the movable blocks 121 of at least two battery limiting assemblies 120 to move synchronously, thereby making the tabs of at least two battery cells synchronously contact their corresponding pads 310 or synchronously detach from the pads 310141.

[0066] In some embodiments, when two battery limiting assemblies 120 are provided, the upper surface of the push block 144 includes a first contact portion and a second contact portion, the first contact portion contacts the bottom of the movable block 121 of one of the battery limiting assemblies 120, and the second contact portion contacts the bottom of the movable block 121 of the other battery limiting assembly 120. When the push block 144 rises, it can push the two battery limiting assemblies 120 to rise synchronously; when the push block 144 descends, under the action of gravity, the two battery limiting assemblies 120 descend until they return to the support platform of the mounting plate 100 and then stop. After stopping, the pole ear 210 of the battery cell 200 contacts the electrical connection part 320 of the circuit board 300.

[0067] See also Figure 4 In this embodiment, at least two battery limiting components 120 are arranged on both sides of the limiting structure 110 of the circuit board 300, which is consistent with the layout of the battery pack limiting device of the laser welding station in the subsequent workstation, which can reduce the manual picking and placing of battery cells between processes, optimize the process time and reduce costs.

[0068] In some embodiments, a control device and an electronic switch are also included. The signal output end of the electronic switch is electrically connected to the driving device 140 for controlling the driving device 140 to be turned on or off. The signal input end of the electronic switch is electrically connected to the control device, and the control device is used to control the operation of the electronic switch according to preset control information.

[0069] The electronic switch may be a solenoid valve, which controls the stroke of the lifting rod cylinder by controlling the compressed air flow of the cylinder. The control device may be a programmable digital controller, the solenoid valve is connected to the programmable digital controller and then to a high-precision power supply, the programmable digital controller is connected to a computer device via a communication serial port, and the computer device stores a preset program to control the precise operation of the solenoid valve.

[0070] This application can set different current output values ​​through programming to meet different control requirements. At the same time, the digital controller can also implement more complex control algorithms, such as PID control, to improve control accuracy and stability. By accurately controlling the current size and power-on time of the input electromagnetic coil, the intensity and duration of the magnetic field can be accurately controlled, and then the movement distance and speed of the valve core can be accurately controlled. The greater the current and the greater the magnetic field intensity, the greater the electromagnetic force on the valve core of the solenoid valve, the faster the movement of the valve core, and the more accurate the position of the valve core, so that the flow and pressure of the compressed air can be more accurately controlled, and then the displacement of the pole ear in the vertical direction and the electrical connection part can be more accurately controlled.

[0071] See also Figure 3In this embodiment, when the two battery limiting assemblies 120 are distributed on the left and right sides of the circuit board limiting structure 110, in the initial state of power-on, the solenoid valve controls the cylinder to simultaneously lift the movable blocks 121 of the left and right battery limiting assemblies 120 by about 10-20 mm, ensuring that when the battery unit 200 is placed in the limiting movable block 121, there is sufficient isolation space with the electrical connection part 320 of the circuit board 300, and before the system determines that the battery unit 200 is correctly placed in the limiting block, the pole ear 210 of the battery unit 200 is blocked from being connected to the electrical connection part 320.

[0072] See also Figure 7 and Figure 8 In this embodiment, two battery limiting components 120 are disposed on both sides of the circuit board limiting structure 110. The battery cells 200 on the two battery limiting components 120 are placed in opposite directions and have opposite polarities. The identification code 220 of the battery cell 200 on one side is on the upper surface of the battery cell 200, and the identification code 220 of the battery cell 200 on the other side is on the lower surface of the battery cell 200. A scanning hole 125 that runs vertically through is provided in the limiting groove 122 of the movable block 121 on the other side. When the battery cell is in the limiting state, the identification code 220 on the lower surface of the battery cell 200 can be scanned by the scanning device through the scanning hole 125.

[0073] In this embodiment, the barcode scanning device 130 includes a first barcode scanning gun and a second barcode scanning gun. The first barcode scanning gun is used to scan the identification code 220 on the battery unit 200, and the second barcode scanning gun 132 is used to scan the identification code 220 on the circuit board 300. The number of the first barcode scanning guns 132 is consistent with the number of the battery limiter components 120, and the positions correspond one to one. It is worth noting that the composition of the barcode scanning component is not limited to the above description. In specific practical applications, the position and number of the barcode scanning guns can be set according to the differences between different battery units 200.

[0074] When there are two battery limit assemblies 120, the two first barcode scanners 132 are used to scan the identification codes 220 on the battery cells 200 on both sides of the circuit board 300 respectively, and the second barcode scanner 132 is used to scan the identification code 220 on the circuit board 300. The battery cells 200 on the battery limit assemblies 120 on both sides of the circuit board limit structure 110 are placed in opposite directions, wherein the first barcode scanner 132 corresponding to the battery limit assemblies 120 on one side is arranged above the mounting plate 100, and is used to scan the identification code 220 on the upper surface of the battery cell 200, and the first barcode scanner 132 corresponding to the battery limit assemblies 120 on the other side is arranged below the mounting plate 100, and is used to scan the identification code 220 on the lower surface of the battery cell 200, see Figure 7In some embodiments, the mounting plate 100 is provided with a through hole 103 aligned with the code scanning hole 125 , and a first code scanning gun 132 for scanning the identification code at the bottom of the battery is disposed below the mounting plate 100 and directly opposite to the through hole 103 .

[0075] It is worth noting that the drive device 140, battery limit assembly 120, circuit board limit structure 110 and barcode scanner of the present application are not limited to the layout described in the above embodiments. In other embodiments, corresponding battery unit 200 limit assemblies, drive devices 140 and barcode scanners can be added to the mounting plate 100 simultaneously according to 2, 4, 6 or 8 or more battery units 200. For example, two battery limit assemblies 120, one circuit board limit structure 110, one drive device 140 and three barcode scanners can form a group, and multiple groups of such structures can be set according to the number of battery units 200 and the assembly method with the battery panel.

[0076] In this embodiment, the identification codes 220 of multiple battery cells 200 are laser marked on the same side (for example, the front or back), and the battery cells 200 are placed one by one in multiple battery limit assemblies 120 according to the required polarity direction (the direction that matches the circuit board 300A line connection). The barcode scanner can quickly scan and enter multiple identification code information corresponding to multiple batteries at the same time. The barcode scanner determines whether the battery cell 200 is placed offset or reversely by judging whether the identification codes 220 on all battery cells 200 are scanned at the same time, which can effectively avoid the risk of short circuit caused by reverse polarity. At the same time, it can accurately identify the battery cell 200 and the battery placement status information, and avoid the risk of manually placing battery cell A and scanning battery cell B with the barcode scanner. The position arrangement of the battery cell 200 relative to the circuit board 300 is consistent with the position and direction of the battery cell in the laser welding placement fixture of the subsequent process, which can avoid the problem of one or more pick-up and placement actions, and ensure that there is no risk of post-association mixing before the battery pack state after welding, reduce repeated pick-up and placement between adjacent processes, and effectively improve processing efficiency.

[0077] The device of this embodiment further includes a code scanning sensor, which is used to sense the battery unit 200, and the code scanning assembly is used to perform a code scanning action according to the sensing information of the battery unit 200. The code scanning gun 132 of this embodiment can adjust the scanning frequency, and the code scanning sensor can be a light sensor. After the battery unit 200 is placed in the battery limit assembly 120, the code scanning gun 132 senses that the battery has been placed through light information, and then automatically scans the code.

[0078] See also Figure 1The device of this embodiment further includes a box body 400, a top plate is provided on the top of the box body 400, the mounting plate 100 can be fixed to the top plate, the code scanning device 130 includes a bracket 131 fixed to the top plate, and the code scanning gun 132 is fixed to the bracket 131. The driving device 140 and the code scanning gun 132 located at the bottom of the mounting plate 100 are accommodated in the box body.

[0079] The present application provides a testing system, including a battery assembly testing device as described in the above embodiment; and a computer device, which is connected to the battery assembly testing device via a communication serial port, and is used to receive identification data from a code scanning device, and control the operation of the driving device based on the identification data.

[0080] The computer device is connected to the code scanning component and the control device through the serial port. The computer is used to receive the identification data of the code scanning component and send control information to the control device based on the identification data, thereby controlling the operation of the drive device. Specifically, the computer can accurately read the data uploaded by the code scanning device 130, and after parsing through the algorithm program in the test software, it sends a control instruction to the control device to control the pneumatic switch, thereby controlling the cylinder to rise or fall, and realizing precise control of the displacement of the battery limit component in the vertical direction, ensuring the stable operation of the entire system, and realizing the automated testing of the battery unit before assembly.

[0081] The solution of the present application can avoid the risk of short circuit caused by reverse polarity of battery cells, while ensuring that the position arrangement of the battery cells relative to the circuit board is consistent with the placement position and direction of the battery cells in the subsequent laser welding process, thereby ensuring that there is no risk of mixing before welding into a battery pack state, and realizing automatic and precise testing of battery cells before assembly, effectively avoiding the outflow of defective products.

[0082] The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A battery assembly test device, characterized in that: include: A mounting plate, wherein the mounting plate is provided with a first mounting portion and a second mounting portion; A circuit board limiting structure, provided on the first mounting portion, for limiting the circuit board, wherein the circuit board is provided with at least one electrical connection portion, and the electrical connection portion is used to be connected to an electrode of a battery unit; A battery limiting assembly, mounted on the second mounting portion, for clamping the battery unit to limit the electrode of the battery unit to a position opposite to the electrical connection portion; A driving device, in transmission cooperation with the battery limiting assembly, for driving the battery limiting assembly to move closer to or farther from the circuit board, so that the electrode of the battery unit contacts or moves away from the electrical connection portion; The code scanning device is used to scan the identification code on the battery unit and / or the circuit board, and detect the placement state of the battery unit on the battery limiting assembly based on the identification code.

2. The battery assembly test device according to claim 1, characterized in that: The battery limiting assembly comprises a movable block movably mounted on the mounting plate, a limiting groove is provided on the upper side of the movable block, and the limiting groove is used to accommodate and limit the battery unit; the driving device is used to drive the movable block to rise and fall.

3. The battery assembly test device according to claim 2, characterized in that: It also includes a push block, which is arranged at the bottom of the movable block, and the upper surface of the push block contacts the bottom surface of the movable block; the driving device includes a power source and a lifting rod, the power source is used to drive the lifting rod to rise and fall, and the lifting rod is connected to the push block.

4. The battery assembly test device according to claim 3, characterized in that: A recessed portion is formed on the upper side of the mounting plate, the circuit board limiting structure and the battery limiting assembly are both arranged in the recessed portion, the first mounting portion is arranged in the middle of the recessed portion, and two second mounting portions are arranged on both sides of the first mounting portion; the circuit board limiting structure includes a slot block for placing a circuit board, and the first mounting portion includes a limiting slot arranged on the mounting plate, and the limiting slot is used to accommodate and limit the slot block; A notch is provided on the side of the mounting plate, and the notch is used to accommodate the push block. At least a portion of the movable block covers the notch in the vertical direction and contacts the top of the push block at the notch.

5. The battery assembly test device according to claim 3, characterized in that: There are at least two battery limiting assemblies, and at least two of the battery limiting assemblies are arranged on both sides of the circuit board limiting structure; the top of the pushing block simultaneously contacts the bottom of the movable blocks of at least two of the battery limiting assemblies, so as to push the movable blocks of at least two of the battery limiting assemblies to rise and fall synchronously.

6. The battery assembly test device according to claim 1, characterized in that: The code scanning device includes a first code scanning gun and a second code scanning gun, the first code scanning gun is used to scan the identification code on the battery unit, and the second code scanning gun is used to scan the identification code on the circuit board; There are at least two battery limit assemblies, and the number of the first barcode scanners is consistent with the number of the battery limit assemblies and corresponds one to one.

7. The battery assembly test device according to claim 6, characterized in that: The first barcode scanner corresponding to the battery limit assembly on one side of the circuit board is arranged above the mounting plate, for scanning the identification code on the upper surface of the battery unit; the first barcode scanner corresponding to the battery limit assembly on the other side is arranged below the mounting plate, for scanning the identification code on the lower surface of the battery unit.

8. The battery assembly test device according to claim 6, characterized in that: It also includes a code scanning sensor, which is used to sense the battery unit, and the first code scanning gun is used to perform automatic code scanning according to the sensing information of the battery unit.

9. The battery assembly test device according to any one of claims 1 to 8, characterized in that: It also includes a control device and an electronic switch, wherein the signal input end of the electronic switch is electrically connected to the control device, and the signal output end of the electronic switch is electrically connected to the drive device, and the control device is used to control the state of the electronic switch according to preset control information to control the operation of the drive device.

10. A testing system, characterized in that: include: The battery assembly test device according to any one of claims 1 to 9; as well as A computer device is connected to the battery assembly test device via a communication serial port, and is used to receive identification data from the code scanning device and control the operation of the driving device based on the identification data.

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