Battery testing device

Abstract

The utility model discloses a battery testing device, and belongs to the technical field of battery detection. The battery testing device comprises a testing carrier and a testing needle seat mechanism, the testing carrier is used for bearing a tested battery, a testing plate is arranged on the testing carrier, and a first part of the testing plate is used for being connected with a connector of the tested battery; the test needle seat mechanism comprises a mounting plate, a test needle seat and a fixing piece, the mounting plate is arranged on one side of the test carrier, a test needle is arranged on the test needle seat, the test needle is used for being connected with the second part of the test plate, and the fixing piece can be connected with the test needle seat and the mounting plate, so that the test needle and the test plate are relatively fixed. In the scheme, in the test process of the test battery, the test pin is not easy to move, the conduction reliability between the test pin and the test board is improved, that is, the conduction reliability between the test pin and the connector of the test battery is improved, and thus the accuracy of a test result is improved.

Description

Technical Field

[0001] This application belongs to the technical field of battery testing, and particularly relates to a battery testing device. Background Art

[0002] Currently, the test pin base of the battery testing device is arranged above the test battery in a liftable manner through a quick clamp. The quick clamp is hinged on the mounting plate of the battery testing device. Each time the test battery is tested, it is necessary to drive the test pin base to descend through the quick clamp and fix the test pin base at the test position through the clamping action of the quick clamp itself, so that the test pins on the test pin base are connected to the connector of the test battery, thereby realizing the test of the test battery.

[0003] However, due to the large number of connection points of the quick clamp, after long-term use, each connection point is prone to looseness, resulting in the overall looseness of the quick clamp, affecting the clamping effect, and causing the test pins to move, which easily leads to poor contact between the test pins and the connector, resulting in inaccurate test results. Utility Model Content

[0004] The purpose of the embodiments of this application is to provide a battery testing device, which can solve the problem that the test pins in the related art are prone to move and have poor contact with the connector, resulting in inaccurate test results.

[0005] The embodiments of this application provide a battery testing device, including:

[0006] A test carrier for carrying the test battery. A test board is arranged on the test carrier, and the first part of the test board is used to connect with the connector of the test battery;

[0007] A test pin base mechanism, including a mounting plate, a test pin base and a fixing member. The mounting plate is arranged on one side of the test carrier. Test pins are arranged on the test pin base. The test pins are used to connect with the second part of the test board. The fixing member can connect the test pin base and the mounting plate to relatively fix the test pins and the test board.

[0008] In the embodiments of this application, the fixing member can connect the test pin base and the mounting plate to relatively fix the test pin base and the mounting plate, so as to fix the position of the test pin base, thereby relatively fixing the test pins and the test board. The test pins are connected and conducted through the test board and the connector of the test battery. In this way, during the test process of the test battery, the test pins are not prone to move, improving the conduction reliability between the test pins and the test board, that is, improving the conduction reliability between the test pins and the connector of the test battery, thereby improving the accuracy of the test results. Description of the Drawings

[0009] Figure 1It is one of the perspective views of the battery testing device disclosed in the embodiments of the present application;

[0010] Figure 2 It is the second perspective view of the battery testing device disclosed in the embodiments of the present application;

[0011] Figure 3 It is the perspective view of the device main body disclosed in the embodiments of the present application;

[0012] Figure 4 It is the top view of the device main body disclosed in the embodiments of the present application;

[0013] Figure 5 It is the third perspective view of the battery testing device disclosed in the embodiments of the present application (part of the test carrier and part of the test pin base are hidden);

[0014] Figure 6 It is the schematic diagram of the positional relationship between the test carrier and the test pin base mechanism (when a test battery is placed on the test carrier);

[0015] Figure 7 It is the schematic diagram of the positional relationship between the test carrier and the test pin base mechanism (when there is no test battery on the test carrier);

[0016] Figure 8 It is the first perspective view of the test pin base mechanism disclosed in the embodiments of the present application;

[0017] Figure 9 It is the front view of the test pin base mechanism disclosed in the embodiments of the present application;

[0018] Figure 10 It is the side view of the test pin base mechanism disclosed in the embodiments of the present application;

[0019] Figure 11 It is the second perspective view of the test pin base mechanism disclosed in the embodiments of the present application (the connection base and the test pins are hidden);

[0020] Figure 12 It is the third perspective view of the test pin base mechanism disclosed in the embodiments of the present application (the test pin base and the test pins are hidden);

[0021] Figure 13 It is the schematic diagram of the connection relationship between the mounting plate and the fixing member disclosed in the embodiments of the present application;

[0022] Figure 14 It is the schematic diagram of the connection relationship between the mounting plate and the fixing tube of the fixing member disclosed in the embodiments of the present application;

[0023] Figure 15 It is the perspective view of the mounting plate disclosed in the embodiments of the present application;

[0024] Figure 16 Is a perspective view of the fixing member disclosed in the embodiment of the present application;

[0025] Figure 17 Is a perspective view of the connecting rod disclosed in the embodiment of the present application;

[0026] Figure 18 Is a perspective view of the fixing tube disclosed in the embodiment of the present application;

[0027] Figure 19 Is the front view of the fixing member disclosed in the embodiment of the present application;

[0028] Figure 20 Is Figure 19 The cross-sectional view taken along the A-A direction in

[0029] Figure 21 Is one of the schematic diagrams showing the connection relationship between the test carrier and the tripping mechanism disclosed in the embodiment of the present application;

[0030] Figure 22 Is the second schematic diagram showing the connection relationship between the test carrier and the tripping mechanism disclosed in the embodiment of the present application;

[0031] Figure 23 Is one of the schematic diagrams showing the connection relationship between the tripping mechanism and the test board disclosed in the embodiment of the present application;

[0032] Figure 24 Is the second schematic diagram showing the connection relationship between the tripping mechanism and the test board disclosed in the embodiment of the present application (hiding the connection block);

[0033] Figure 25 Is one of the perspective views of the tripping mechanism disclosed in the embodiment of the present application;

[0034] Figure 26 Is the second perspective view of the tripping mechanism disclosed in the embodiment of the present application (hiding the limit plate);

[0035] Figure 27 Is the perspective view of the limit plate disclosed in the embodiment of the present application;

[0036] Figure 28 Is the perspective view of the test carrier disclosed in the embodiment of the present application;

[0037] Figure 29 Is the perspective view of the test board disclosed in the embodiment of the present application.

[0038] Explanation of reference numerals:

[0039] 100 - Test battery; 110 - Connector;

[0040] 200 - Device main body; 201 - Opening; 210 - Test carrier; 211 - Battery installation groove;

[0041] 212 - Test board installation groove; 2121 - First installation groove; 2122 - Second installation groove; 213 - Notch;

[0042] 220 - Test board; 221 - First part; 222 - Second part; 223 - Through hole; 230 - Tripping mechanism;

[0043] 231 - Thumb rod; 232 - Pressing rod; 2321 - First rod part; 2322 - Second rod part; 2323 - Third rod part;

[0044] 233 - Thumb pin; 234 - Reset counterweight; 235 - Limit plate; 2351 - Through slot; 236 - Support;

[0045] 240 - Control switch; 250 - Handle;

[0046] 300 - Test pin base mechanism; 310 - Mounting plate; 311 - Threaded hole; 320 - Test pin base; 330 - Test pin;

[0047] 340 - Connecting seat; 341 - Groove; 350 - Fixing part; 351 - Fixing tube; 352 - Connecting rod;

[0048] 3521 - Rod part; 3522 - Limit part; 3523 - Connecting part; 360 - Guide rail; 370 - Slide block;

[0049] 380 - Mounting part. Detailed implementation mode

[0050] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0051] The terms "first", "second", "third", etc. in the specification and claims of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", "third", etc. are usually of the same type, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / ", generally represents an "or" relationship between the associated objects before and after.

[0052] The following will, in conjunction with the accompanying drawings, describe in detail the battery testing device provided by the embodiments of the present application through specific embodiments and their application scenarios.

[0053] Referring to Figures 1 - 29 , a battery testing device provided by an embodiment of the present application may include a test carrier 210 and a test pin base mechanism 300. The test carrier 210 can be used to carry a test battery 100. A test board 220 may be provided on the test carrier 210. The first part 221 of the test board 220 can be used to connect with a connector 110 of the test battery 100. The test pin base mechanism 300 may include a mounting plate 310, a test pin base 320, and a fixing member 350. The mounting plate 310 may be provided on one side of the test carrier 210. Test pins 330 may be provided on the test pin base 320. The test pins 330 can be used to connect with the second part 222 of the test board 220. The fixing member 350 can connect the test pin base 320 and the mounting plate 310 to relatively fix the test pins 330 and the test board 220.

[0054] The fixing member 350 can connect the test pin base 320 and the mounting plate 310 to relatively fix the test pin base 320 and the mounting plate 310, so as to fix the position of the test pin base 320, thereby relatively fixing the test pins and the test board 220. In this way, during the testing process of the test battery 100, the test pins 330 are not likely to move, improving the conduction reliability between the test pins 330 and the test board 220, that is, improving the conduction reliability between the test pins 330 and the connector 110 of the test battery 100, thereby improving the accuracy of the test results.

[0055] In an alternative embodiment, as Figure 28 shown, a test board mounting groove 212 and a battery mounting groove 211 may be provided on the test carrier 210. The test board mounting groove 212 may be located on one side of the battery mounting groove 211. The test board 220 may be provided in the test board mounting groove 212. The test battery 100 may be placed in the battery mounting groove 211, and the test battery 100 may be connected to the test carrier 210 by screws. Here, a perforation through which a thimble 233 described below passes may be provided at the bottom of the test board mounting groove 212.

[0056] In this embodiment, the test board mounting groove 212 may include a first mounting groove 2121 and a second mounting groove 2122 communicating with the first mounting groove 2121. The first mounting groove 2121 is provided close to the battery mounting groove 211 and can communicate with the battery mounting groove 211. The first part 221 of the test board 220 may be located in the first mounting groove 2121. The second part 222 of the test board 220 may be located in the second mounting groove 2122. Here, the connection between the first mounting groove 2121 and the second mounting groove 2122 may form an L-shaped groove.

[0057] In an alternative embodiment of the present application, the battery testing device may further include a tripping mechanism 230. The tripping mechanism 230 may be connected to the test carrier 210. A part of the tripping mechanism 230 may pass through the test carrier 210 and contact the connector 110. The tripping mechanism 230 may be used to drive the separation of the connector 110 from the test board 220. In this way, it is convenient to separate the connector 110 and the test board 220 without removing the test carrier 210, which is beneficial to simplifying the disassembly operation of the test battery 100, shortening the disassembly time of the test battery 100, and thus improving the test efficiency.

[0058] In other embodiments, the battery testing device may not include the tripping mechanism 230. After the test of the test battery 100 is completed, the test carrier 210 and the test battery 100 are removed together, and then the test carrier 210 and the test battery 100 are placed in an additional tripping jig. Manually pressing the tripping jig separates the connector 110 from the test board 220, thereby realizing the disassembly of the test battery 100.

[0059] In an alternative embodiment, as Figures 23 - 26 shown, the tripping mechanism 230 may include a push rod 231 and a pressure rod 232. At least a part of the push rod 231 may pass through the test carrier 210. The top end of the push rod 231 may be used to contact the connector 110. The pressure rod 232 may be rotatably connected to the test carrier 210. The bottom end of the push rod 231 is connected to the pressure rod 232. The pressure rod 232 can drive the push rod 231 to rise, so that the connector 110 is separated from the test board 220. Pressing the pressure rod 232 to make the pressure rod 232 rotate can drive the push rod 231 to rise. The push rod 231 pushes the connector 110, so that the connector 110 is separated from the test board 220.

[0060] The method of using the cooperation of the push rod 231 and the pressure rod 232 to separate the connector 110 from the test board 220, compared with the method of using a telescopic driving member to drive the separation of the connector 110 from the test board 220, does not require an additional power source, has a simple structure, and is not easily affected by the power source.

[0061] In other embodiments, the tripping mechanism 230 may include a telescopic driving member. The driving end of the telescopic driving member is used to contact the connector 110. When the telescopic driving member extends, it can push out the connector 110, so that the connector 110 is separated from the test board 220. Here, the telescopic driving member may be a cylinder or a hydraulic cylinder or an electric cylinder.

[0062] Optionally, a first portion 221 of the test board 220 may be provided with through holes 223, and the top end of the ejector rod 231 may be provided with ejector pins 233. The ejector pins 233 can pass through the through holes 223 to contact the connector 110. In this way, it is convenient for the ejector pins 233 to push the connector 110. Of course, the first portion 221 of the test board 220 may not be provided with through holes 223.

[0063] Further optionally, the top end of the ejector rod 231 may be provided with at least two ejector pins 233. The ejector pins 233 are arranged in parallel. And at least one ejector pin 233 passes through the through hole 223 to contact a part of the connector 110, and at least one ejector rod 231 is located on one side of the first portion 221 of the test board 220 and contacts another part of the connector 110. In this way, it is more convenient to push the connector 110, so that the connector 110 can be quickly separated from the test board 220, and the connector 110 can be balanced in force, avoiding damage to the connector 110.

[0064] In an alternative embodiment, as Figure 25 and Figure 26 shown, the release mechanism 230 may further include a reset counterweight 234. The reset counterweight 234 may be arranged on the ejector rod 231 and may be used to drive the ejector rod 231 to descend to the initial position. In this way, the ejector rod 231 can be automatically reset by the reset counterweight 234, so as to facilitate pushing the connector 110 again without manually resetting the ejector rod 231.

[0065] As Figure 25 shown, the release mechanism 230 may further include a limit plate 235. The limit plate 235 may be connected to the test carrier 210. The limit plate 235 may be located below the reset counterweight 234. When the ejector rod 231 descends to the initial position, the limit plate 235 abuts against the reset counterweight 234 to limit the descent of the reset counterweight 234. In this way, the ejector rod 231 can be prevented from detaching from the test carrier 210.

[0066] Here, as Figure 27 shown, the limit plate 235 may be provided with a through slot 2351. The through slot 2351 may be used for the ejector rod 231 to pass through, so as to prevent the limit plate 235 from hindering the lifting and lowering of the ejector rod 231.

[0067] Of course, the release mechanism 230 may not include the reset counterweight 234, and the operator can make the ejector rod 231 descend to the initial position by rotating the pressure rod 232.

[0068] In an alternative embodiment, a support member 236 may be connected to the bottom end of the test carrier 210. The pressure rod 232 may be rotatably connected to the support member 236 through a rotating shaft. Here, the axial direction of the rotating shaft is perpendicular to the lifting and lowering direction of the ejector rod 231.

[0069] Optionally, as Figure 24 shown, the pressing rod 232 may include a first rod portion 2321, a second rod portion 2322, and a third rod portion 2323 that are connected in sequence. The first rod portion 2321 is connected to the ejector rod 231. The second rod portion 2322 is perpendicular to the first rod portion 2321, and the second rod portion 2322 is rotatably connected to the support member 236 through a rotating shaft. The third rod portion 2323 is disposed obliquely, and a part of the third rod portion 2323 passes through the test carrier 210. An operator can drive the second rod portion 2322 to rotate by pressing the third rod portion 2323, so that the first rod portion 2321 drives the ejector rod 231 to move up and down.

[0070] To facilitate the operator to press the pressing rod 232, as Figure 28 shown, a notch 213 may be provided on the test carrier 210, and a part of the third rod portion 2323 of the pressing rod 232 may be located within the notch 213, or a part of the third rod portion 2323 protrudes from the notch 213.

[0071] In an alternative embodiment of the present application, the test probe base mechanism 300 may further include a moving driving member. The moving driving member may be disposed on the mounting plate 310, and the driving end of the moving driving member may be connected to the test probe base 320. When the fixing member 350 is separated from the test probe base 320, the moving driving member can drive the test probe base 320 away from the test carrier 210, so that the test probe 330 is separated from the test board 220. In this way, when it is necessary to disassemble and assemble the test carrier 210, the moving driving member can drive the test probe base 320 away from the test carrier 210 to prevent the test probe base mechanism 300 from affecting the disassembly and assembly of the test carrier 210.

[0072] Here, driving the test probe base 320 to move by the moving driving member is beneficial to reducing the workload of the operator and shortening the disassembly and assembly time of the test carrier 210, thereby improving the disassembly and assembly efficiency compared with the method of manually disassembling and assembling the test probe base 320.

[0073] In other embodiments, the test probe base mechanism 300 may not include a moving driving member. When it is necessary to replace the test carrier 210, the fixing member 350 can be directly separated from the test probe base 320, and the test probe base 320 can be removed from the mounting plate 310.

[0074] In this embodiment, the moving driving member may be a cylinder, a hydraulic cylinder, an electric cylinder, or other linear drivers. Moreover, a mounting portion 380 may be provided on the mounting plate 310. The mounting portion 380 may be disposed near the top end of the mounting plate 310, and the mounting portion 380 is used for mounting the moving driving member.

[0075] In an alternative embodiment, as Figure 13As shown, a guide rail 360 may be provided on the mounting plate 310. The guide rail 360 may extend along the moving direction of the test probe base 320, and the test probe base 320 may be slidably connected to the guide rail 360. In this way, the guide rail 360 can guide the test probe base 320 to prevent the test probe base 320 from shifting during movement, resulting in poor contact between the test probe 330 and the second part 222 of the test board 220.

[0076] Of course, the guide rail 360 may not be provided on the mounting plate 310.

[0077] Optionally, the test probe base mechanism 300 may further include a connecting seat 340. The test probe base 320 may be disposed on the connecting seat 340. The connecting seat 340 may be connected to the driving end of the moving driving member. The connecting seat 340 may be slidably connected to the guide rail 360 through a slider 370. Moreover, a fixing member 350 may connect the mounting plate 310 and the connecting seat 340.

[0078] Further optionally, the test probe base 320 is detachably connected to the connecting seat 340. In this way, the test probe base 320 of the required specification can be replaced as needed. Specifically, a plurality of mounting holes may be provided on the connecting seat 340, and the test probe base 320 may be connected to at least one mounting hole through connecting screws.

[0079] As Figure 12 shown, the connecting seat 340 may be provided with a groove 341. A part of the test probe base 320 is embedded in the groove 341 and connected to the connecting seat 340. Moreover, the bottom end of the test probe base 320 may be flush with the bottom end of the connecting seat 340.

[0080] Optionally, a plurality of test probe fixing holes may be provided on the test probe base 320, and the test probes 330 may be installed in different test probe fixing holes so that the test probes 330 can adapt to different test batteries 100.

[0081] In an alternative embodiment of the present application, as Figure 14 、 Figures 16 - 20 shown, the fixing member 350 may include a fixing tube 351 and a connecting rod 352. The fixing tube 351 may be connected to the mounting plate 310. The connecting rod 352 may include a rod portion 3521 and a limiting portion 3522. The limiting portion 3522 is connected to the rod portion 3521. Moreover, the part of the rod portion 3521 away from the limiting portion 3522 may pass through the fixing tube 351 and be connected to the test probe base 320. The limiting portion 3522 may abut against the fixing tube 351 to limit the fixing tube 351 from moving away from the test probe base 320 relative to the rod portion 3521. In this way, it is convenient to connect the mounting plate 310 and the test probe base 320. The operator only needs to insert and pull out the connecting rod 352 to achieve the connection and separation of the mounting plate 310 and the test probe base 320, and the operation is convenient.

[0082] In other embodiments, the fixing member 350 may be a fastening screw.

[0083] Optionally, as Figure 17 shown, a connecting portion 3523 may be provided at one end of the rod portion 3521 away from the limiting portion 3522. Along the direction away from the limiting portion 3522, the cross-sectional area of the connecting portion 3523 gradually decreases. And, a connecting hole may be provided on the test probe base 320. The aperture of the connecting hole is larger than the minimum diameter of the connecting portion 3523 and less than or equal to the maximum diameter of the connecting portion 3523, so that at least a part of the connecting portion 3523 can be embedded into the connecting hole and tightly fit with the hole wall of the connecting hole, realizing the connection between the connecting portion 3523 and the test probe base 320.

[0084] Here, the connecting hole may be provided on the connecting seat 340 described above.

[0085] In this embodiment, the fixing tube 351 may be threadedly connected to the mounting plate 310. Specifically, as Figure 15 shown, a threaded hole 311 may be provided on the mounting plate 310, and the fixing tube 351 may be provided with an external thread matching the threaded hole 311.

[0086] In an alternative embodiment of the present application, the battery testing device may further include a device main body 200. The mounting plate 310 may be provided on the device main body 200, and the test carrier 210 may be detachably connected to the device main body 200. In this way, when other item tests are required, the corresponding test carrier 210 can be replaced, enhancing the compatibility of the battery testing device. Here, the test carrier 210 may be connected to the device main body 200 by connecting screws. Specifically, fixing holes for the connecting screws to pass through may be provided on the test carrier 210.

[0087] Of course, the test carrier 210 and the device main body 200 may be of an integral structure.

[0088] Optionally, the device main body 200 may include a plurality of test carriers 210 with different specifications, and each test carrier 210 with different specifications may be provided on the device main body 200.

[0089] In this embodiment, as Figure 5 shown, an opening 201 for the tripping mechanism 230 to pass through is provided on the upper end plate of the device main body 200, and the support member 236 described above may be located below the upper end plate.

[0090] In an alternative embodiment, a control switch 240 may be provided on the device main body 200. The control switch 240 may be electrically connected to the test board 220 and may be used to control the test board 220 to start or stop the test. Optionally, an indicator light may also be provided on the device main body 200. The indicator light may be electrically connected to the control switch 240. When the control switch 240 is in the open state, the indicator light shows green, so that the operator can clearly know that the test board 220 is testing the test battery 100 at this time.

[0091] To facilitate the movement of the battery testing device, handles 250 may be provided on both opposite sides of the device main body 200 for the operator to grasp.

[0092] In an alternative embodiment, the battery testing device may include at least two test carriers 210 and at least two test pin base mechanisms 300. Each test carrier 210 may be distributed along the length direction of the device main body 200, and each test pin base mechanism 300 may be provided corresponding to each test carrier 210 one by one. In this way, at least two test batteries 100 can be tested simultaneously, which is convenient for turnover and can improve the test efficiency.

[0093] In other embodiments, the battery testing device may include only one test carrier 210 and one test pin base mechanism 300.

[0094] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them belong to the protection scope of the present application.

Claims

1. A battery testing device, characterized in that: include: A test carrier (210) for carrying a test battery (100), wherein a test board (220) is disposed on the test carrier (210), and a first portion (221) of the test board (220) is used to connect to a connector (110) of the test battery (100); A test needle holder mechanism (300) comprises a mounting plate (310), a test needle holder (320) and a fixing member (350), wherein the mounting plate (310) is arranged on one side of the test carrier (210), the test needle holder (320) is provided with a test needle (330), the test needle (330) is used to connect with the second part (222) of the test plate (220), and the fixing member (350) can connect the test needle holder (320) and the mounting plate (310) so that the test needle (330) and the test plate (220) are relatively fixed.

2. The battery testing device according to claim 1, characterized in that: It also includes a tripping mechanism (230), which is connected to the test carrier (210), and a portion of the tripping mechanism (230) can pass through the test carrier (210) and contact the connector (110), and the tripping mechanism (230) is used to drive the connector (110) to separate from the test board (220).

3. The battery testing device according to claim 2, characterized in that: The tripping mechanism (230) comprises: A push rod (231), at least a portion of which passes through the test carrier (210), and a top end of the push rod (231) is used to contact the connector (110); The pressure rod (232) is rotatably connected to the test carrier (210), and the bottom end of the push rod (231) is connected to the pressure rod (232). The pressure rod (232) can drive the push rod (231) to rise, so as to separate the connector (110) from the test board (220).

4. The battery testing device according to claim 3, characterized in that: The first portion (221) of the test board (220) is provided with a through hole (223), and the top end of the ejector rod (231) is provided with an ejector pin (233), and the ejector pin (233) can pass through the through hole (223) to contact the connector (110).

5. The battery testing device according to claim 3, characterized in that: The tripping mechanism (230) further comprises: A reset counterweight (234) is disposed on the push rod (231) and is used to drive the push rod (231) to descend to an initial position; A limit plate (235) is connected to the test carrier (210), and a through slot (2351) is provided on the limit plate (235) for the push rod (231) to pass through. The limit plate (235) is located below the reset counterweight (234). When the push rod (231) descends to the initial position, the limit plate (235) abuts against the reset counterweight (234) to limit the descent of the reset counterweight (234).

6. The battery testing device according to claim 1, characterized in that: The test needle holder mechanism (300) further comprises a movable driving member, wherein the movable driving member is arranged on the mounting plate (310), and a driving end of the movable driving member is connected to the test needle holder (320). When the fixing member (350) is separated from the test needle holder (320), the movable driving member can drive the test needle holder (320) away from the test carrier (210) so as to separate the test needle (330) from the test board (220).

7. The battery testing device according to claim 6, characterized in that: A guide rail (360) is provided on the mounting plate (310), the guide rail (360) extends along the moving direction of the test needle seat (320), and the test needle seat (320) is slidably connected to the guide rail (360).

8. The battery testing device according to claim 1, characterized in that: The fixing member (350) comprises a fixing tube (351) and a connecting rod (352); the fixing tube (351) is connected to the mounting plate (310); the connecting rod (352) comprises a rod portion (3521) and a limiting portion (3522) connected to the rod portion (3521); a portion of the rod portion (3521) away from the limiting portion (3522) can pass through the fixing tube (351) and be connected to the test needle seat (320); the limiting portion (3522) can abut against the fixing tube (351) to limit the fixing tube (351) from moving relative to the rod portion (3521) in a direction away from the test needle seat (320).

9. The battery testing device according to claim 1, characterized in that: The battery testing device also includes a device body (200), the mounting plate (310) is arranged on the device body (200), and the testing carrier (210) is detachably connected to the device body (200).

10. The battery testing device according to claim 9, characterized in that: The battery testing device comprises at least two test carriers (210) and at least two test needle holder mechanisms (300), each of the test carriers (210) being distributed along the length direction of the device body (200), and each of the test needle holder mechanisms (300) being arranged in one-to-one correspondence with each of the test carriers (210).

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