A BMS test tool with a test template capable of being quickly replaced

Abstract

The utility model discloses a kind of BMS test tool of quick replacement test template, including upper test bench and lower test bench, detachably connected with PCB board on the upper test bench, electrically connected with multiple needle beds on the PCB board, electrically connected with plug on the PCB board, fixedly connected with switching module on the upper test bench, electrically connected with switching socket on the switching module, electrically connected by plug insertion on switching socket, electrically connected with multiple DB sockets on the switching module, the upper test bench is slidably connected with lower test bench, positioning assembly is equipped on the lower test bench, and the positioning assembly clamps BMS board.The utility model provides a kind of BMS test tool of quick replacement test template, by switching module collection DB cable connection, then connect with PCB board, to reduce the time consumption of replacement PCB board.

Description

Technical Field

[0001] This utility model relates to the field of BMS testing, and in particular to a BMS testing fixture with a quick-change test template. Background Technology

[0002] Battery Management System (BMS) test fixtures are key equipment for verifying the performance and safety of battery modules. In the existing technology, multiple DB cables (such as serial communication, signal acquisition, and power harness) are electrically connected to the test template. The contact bed on the test template is connected to the socket on the BMS board to quickly detect whether the BMS board is qualified. This is suitable for mass testing of BMS boards.

[0003] When switching test templates, all DB connectors of the current template must be manually removed one by one, and all cables must be reconnected after the new template is installed. However, when there are a large number of DB cables and the interfaces are dense, the removal and installation of DB cables depends on manual arrangement of the cables and confirmation of the interface numbers. The time required for the operation increases with the number of DB cables, affecting the efficiency of test template replacement. Utility Model Content

[0004] The purpose of this invention is to provide a BMS test fixture that allows for quick replacement of test templates. By using an adapter module to collect the DB cable connections and then connecting them to the PCB board, the time spent replacing the PCB board is reduced.

[0005] The technical solution adopted by the BMS test fixture with quick-change test template disclosed in this utility model is:

[0006] The device includes an upper test platform and a lower test platform. A PCB board is detachably connected to the upper test platform. Multiple beds of needles are electrically connected to the PCB board, and a plug is electrically connected to the PCB board. An adapter module is fixedly connected to the upper test platform. An adapter socket is electrically connected to the adapter module, and the plug is plugged into the adapter socket. Multiple DB sockets are electrically connected to the adapter module. The upper test platform and the lower test platform are slidably connected. A positioning component is provided on the lower test platform, and the positioning component clamps the BMS board.

[0007] As a preferred embodiment, the PCB board is provided with four limiting members, which are detachably connected to the upper test platform through the PCB board.

[0008] As a preferred embodiment, the plug is a gold finger pad and the adapter socket is a gold finger slot.

[0009] As a preferred embodiment, the PCB board is electrically connected to multiple expansion interfaces.

[0010] As a preferred embodiment, the lower test platform is provided with a first groove and two second grooves, wherein the two limiting members and the adapter module are located above the first groove, and the other two limiting members are located above the two second grooves respectively.

[0011] As a preferred embodiment, the lower test platform is provided with three sliding grooves, the bottom of the sliding grooves is penetrated by a limiting groove, the positioning component includes a first positioning block and three second positioning blocks, the first positioning block is fixedly connected to the lower test platform, the second positioning blocks are placed in the sliding grooves and make sliding contact, and the second positioning blocks are detachably connected to the limiting grooves.

[0012] As a preferred embodiment, four optical rods are fixedly connected to the upper test platform, with the four optical rods respectively close to the four directions of the upper test platform. Four positioning holes are passed through the lower test platform, and the optical rods are slidably connected by passing through the positioning holes.

[0013] As a preferred embodiment, four limiting blocks are fixedly connected to the lower test platform, and the four limiting blocks are respectively close to the four positioning holes.

[0014] The beneficial effects of the BMS test fixture with quick-change test template disclosed in this utility model are:

[0015] Multiple DB cables are electrically connected to multiple DB sockets on the adapter module. The DB cables transmit data to the PCB board via the adapter sockets and plugs of the adapter module, pushing the upper test platform to slide down on the lower test platform, so that the PCB board's needle bed is electrically connected to the port of the BMS board. External testing equipment detects whether the BMS board is qualified through the PCB board. When the BMS board type is changed, the PCB board is removed from the upper test platform, the PCB board's plug is unplugged from the adapter socket, and the PCB board corresponding to the new BMS board is installed back on the upper test platform. The plug of this PCB board is plugged into the adapter socket. This eliminates the need to cumbersomely plug and unplug multiple DB cables to replace the new PCB board, thus improving the efficiency of PCB board replacement. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the upper test bench structure of a BMS test fixture with a quick-change test template according to this utility model.

[0017] Figure 2 This is a schematic diagram of the lower test bench structure of a BMS test fixture with a quick-change test template according to this utility model. Detailed Implementation

[0018] The present invention will be further described and illustrated below with reference to specific embodiments and the accompanying drawings:

[0019] Please refer to Figure 1 and Figure 2 .

[0020] This utility model discloses a BMS test fixture with a quick-change test template for testing BMS board 28. The test fixture includes an upper test bench 1 and a lower test bench 2.

[0021] Please refer to Figure 1 .

[0022] The bottom of the upper test bench 1 is detachably connected to a PCB board 11. The PCB board 11 is provided with four limiting members 111. In this embodiment, the four limiting members 111 are preferably located close to the four directions of the PCB board 11. The limiting members 111 are butterfly bolts. The butterfly bolts make it easy for workers to disassemble the limiting members 111. The limiting members 111 pass through the PCB board 11 and are detachably connected to the bottom of the upper test bench 1.

[0023] Furthermore, the PCB board 11 is electrically connected to a plurality of beds of pins 112, and the PCB board 11 is electrically connected to a plug 113, which is close to the edge of the PCB board 11. In this embodiment, the plug 113 is preferably a gold finger pad.

[0024] Furthermore, the PCB board 11 is electrically connected to multiple expansion interfaces 114, which can increase the number of ways for the PCB board 11 to access data. When a special function on the BMS board 28 needs to be tested separately, a test cable for testing the special function can be connected to the expansion interface 114 to test whether the special function is operating normally. After the test is completed, the subsequent BMS board 28 does not need to test the special function, and the test cable can be disconnected from the expansion interface 114.

[0025] A converter module 12 is fixedly connected to the bottom of the upper test bench 1. A converter socket 121 is electrically connected to the converter module 12. The converter socket 121 is close to the edge of the converter module 12. In this embodiment, the converter socket 121 is preferably a gold finger slot.

[0026] Furthermore, the adapter module 12 is electrically connected to multiple DB sockets 122, and multiple DB cables are electrically connected to the multiple DB sockets 122 respectively. The data of the DB cables is transmitted to the adapter socket 121 via the DB sockets 122 and the adapter module 12.

[0027] The plug 113 is plugged into the adapter socket 121 for electrical connection. The data from the DB cable is transmitted to the needle bed 112 via the adapter socket 121, the plug 113 and the PCB board 11.

[0028] Four optical rods 13 are fixedly connected to the upper test platform 1. The four optical rods 13 are respectively close to the four corners of the upper test platform 1, the four optical rods 13 are parallel to each other, and the optical rods 13 are perpendicular to the bottom surface of the upper test platform 1.

[0029] Please refer to Figure 1 and Figure 2 .

[0030] The lower test platform 2 is provided with three sliding grooves 21, and the bottom of the sliding grooves 21 is provided with limiting grooves 211, which penetrate the lower test platform 2.

[0031] Furthermore, the top of the lower test platform 2 is provided with a positioning component, which includes a first positioning block 22 and three second positioning blocks 23; the first positioning block 22 is fixedly connected to the lower test platform 2, the second positioning blocks 23 are placed in the sliding groove 21 for sliding contact, the second positioning blocks 23 are detachably connected to the limiting groove 211, the top of the lower test platform 2 is provided with a detection area, and the first positioning block 22 and the three second positioning blocks 23 are respectively located on the four sides of the detection area.

[0032] The lower test platform 2 is provided with a first groove 24 and two second grooves 25. Four positioning holes 26 are passed through the lower test platform 2. Four limiting blocks 27 are fixedly connected to the lower test platform 2. The four limiting blocks 27 are respectively close to the four positioning holes 26.

[0033] The light rod 13 is slidably connected by inserting into the adjacent positioning hole 26. The upper test platform 1 is slidably connected to the positioning hole 26 of the lower test platform 2 through the light rod 13. The external lifting device pulls or pushes the upper test platform 1 to slide up or slide down on the lower test platform 2.

[0034] Two of the limiting members 111 and the adapter module 12 are located above the first groove 24, and the other two limiting members 111 are located above the two second grooves 25 respectively.

[0035] Preparations before testing:

[0036] Multiple DB cables are electrically connected to multiple DB sockets 122 respectively. The plug 113 of the PCB board 11 is connected to the adapter socket 121 of the adapter module 12. The PCB board 11 is fixed to the bottom of the upper test bench 1 by the limiting member 111. After adjusting the position of the three second positioning blocks 23 in the slide 21, they are fixed so that the first positioning block 22 and the three second positioning blocks 23 respectively lock the four sides of the BMS board 28, and the port of the BMS board 28 is located directly below the needle bed 112.

[0037] During testing:

[0038] The DB cable transmits data to the needle bed 112 of the PCB board 11. An external lifting mechanism pushes the upper test stage 1 to slide down on the lower test stage 2, so that the needle bed 112 connects with the port of the BMS board 28. The external testing equipment detects whether the BMS board is operating normally through the PCB board. The first groove 24 and the second groove 25 provide descent space for the limit member 111 and the adapter module 12, respectively, to avoid impact from the lower test stage 2. The limit block 27 is used to limit the descent distance of the upper test stage 1 to prevent the descent distance of the upper test stage 1 from exceeding the travel and damaging the needle bed 112.

[0039] After the test is completed, the external lifting mechanism pulls the upper test platform 1 to slide and rise on the lower test platform 2, so that the needle bed 112 is disengaged from the port of the BMS board 28, and the BMS board 28 is taken out from the first positioning block 22 and the three second positioning blocks 23, and the next BMS board 28 to be tested is put in.

[0040] When replacing PCB board 11:

[0041] Remove the limiting member 111 that constrains the PCB board 11, and pull the PCB board 11 to disengage the plug 113 from the adapter socket 121; connect the plug 113 of the PCB board 11 corresponding to the new BMS board 28 to the adapter socket 121, and reset the limiting member 111 to constrain the PCB board 11 to the bottom of the upper test bench 1; by integrating the DB cable into the adapter module 12, the PCB board 11 only needs to be connected to the adapter module 12, so that when replacing the PCB board 11, only the connection between the plug 113 and the adapter socket 121 needs to be plugged and unplugged, thereby realizing quick replacement of the PCB board 11.

[0042] This invention provides a BMS test fixture with a quick-change test template. Multiple DB cables are electrically connected to multiple DB sockets on an adapter module. The DB cables transmit data to the PCB board via the adapter sockets and plugs of the adapter module, pushing the upper test platform to slide down on the lower test platform. This allows the PCB board's needle bed to electrically connect to the ports of the BMS board. External testing equipment checks the BMS board's qualification status through the PCB board. When the BMS board type is changed, the PCB board is removed from the upper test platform, the PCB board's plug is unplugged from the adapter socket, and the corresponding new BMS board's PCB board is installed back on the upper test platform. The plug of this new PCB board is plugged into the adapter socket. This eliminates the need for cumbersome plugging and unplugging of multiple DB cables to replace the new PCB board, thus improving the efficiency of PCB board replacement.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A BMS test fixture with a quick-change test template for testing BMS boards, characterized in that, include: The upper test stand is detachably connected to a PCB board, which is electrically connected to multiple beds of needles and a plug. An adapter module is fixedly connected to the upper test stand, and an adapter socket is electrically connected to the adapter module. The plug is plugged into the adapter socket and electrically connected. The adapter module is electrically connected to multiple DB sockets. The lower test platform is slidably connected to the upper test platform. The lower test platform is provided with a positioning component, which clamps the BMS board.

2. The BMS test fixture with quickly changeable test templates as described in claim 1, characterized in that, The PCB board is provided with four limiting members, which are detachably connected to the upper test platform through the PCB board.

3. The BMS test fixture with quickly changeable test templates as described in claim 2, characterized in that, The plug has gold finger pads, and the adapter socket has gold finger slots.

4. A BMS test fixture with a quickly changeable test template as described in claim 3, characterized in that, The PCB board has multiple expansion interfaces electrically connected.

5. A BMS test fixture with a quickly changeable test template as described in claim 4, characterized in that, The lower test platform is provided with a first groove and two second grooves, wherein two of the limiting members and the adapter module are located above the first groove, and the other two limiting members are located above the two second grooves respectively.

6. A BMS test fixture with a quickly changeable test template as described in claim 5, characterized in that, The lower test platform has three sliding grooves, and the bottom of the sliding grooves passes through the limiting grooves. The positioning component includes a first positioning block and three second positioning blocks. The first positioning block is fixedly connected to the lower test platform, and the second positioning blocks are placed in the sliding grooves for sliding contact. The second positioning blocks are detachably connected to the limiting grooves.

7. A BMS test fixture with a quickly changeable test template as described in claim 6, characterized in that, Four optical rods are fixedly connected to the upper test platform, and the four optical rods are respectively close to the four directions of the upper test platform. Four positioning holes are passed through the lower test platform, and the optical rods are slidably connected by passing through the positioning holes.

8. A BMS test fixture with a quickly changeable test template as described in claim 7, characterized in that, Four limiting blocks are fixedly connected to the lower test platform, and the four limiting blocks are respectively close to the four positioning holes.

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