Battery detection device and battery detection system

By designing a battery detection device containing a short-circuit probe and a detection tube, pulse short-circuit and sealing detection are achieved simultaneously in one detection link, solving the problems of large size, low efficiency and difficult replacement of the device in the prior art, and reducing the detection cost.

CN223065463UActive Publication Date: 2025-07-04CHONGQING TALENT NEW ENERGY CO LTD
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Patent Information

Application Number
CN202422222150.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-11
Publication Date
2025-07-04
Estimated Expiration
2034-09-11

AI Technical Summary

Technical Problem

The existing battery detection devices occupy a large space, have low detection efficiency and long replacement cycle, resulting in high detection costs.

Method used

A battery detection device is designed, including a detection box and a box cover, with a short-circuit probe and a detection tube on the box cover, and the driving component is used to separate and connect the box body and the box cover, forming a sealing space, and realizing pulse short-circuit detection and sealing detection.

Benefits of technology

In one detection step, pulse short circuit detection and sealing detection are completed simultaneously, which reduces the device volume, improves detection efficiency, is compatible with batteries of different sizes, simplifies the replacement operation, and reduces the detection cost.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to the technical field of battery detection, and discloses a battery detection device and a battery detection system. The device comprises a detection box and a driving assembly, the detection box comprises a box body and a box cover, the box body is provided with an opening, a battery can enter the box body through the opening, the box cover can seal and cover the opening of the box body to define a sealed space, and batteries with different sizes can be limited and accommodated in the sealed space. The box cover is provided with a short-circuit probe and a detection tube, the short-circuit probe is used for carrying out pulse short-circuit detection, the detection tube is used for carrying out sealing performance detection, and the driving assembly is in transmission connection with at least one of the box body and the box cover so as to separate and connect the box body and the box cover. Through the battery detection device, pulse short circuit detection and sealing performance detection can be simultaneously realized in one detection link, the overlarge size of the battery detection device is avoided, the detection efficiency is improved, the battery detection device can be compatible with batteries with different sizes, and the remodeling operation process is avoided or simplified.
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Description

Technical Field

[0001] The utility model relates to the technical field of battery detection, in particular to a battery detection device and a battery detection system. Background Art

[0002] After the battery is produced, it must undergo multiple testing procedures to check whether it meets the design standards and usage requirements. The testing procedures include pulse short circuit testing, sealing testing, etc. Each testing procedure uses an independent testing device, which not only takes up a large space, but also reduces the testing efficiency. At the same time, the testing device used has a long changeover cycle and is difficult to change, resulting in high testing costs.

[0003] Based on the above, a battery detection device and a battery detection system are urgently needed to solve the above technical problems. Utility Model Content

[0004] The utility model aims to provide a battery detection device with higher detection efficiency and lower detection cost.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] The battery testing device comprises:

[0007] A detection box, the detection box comprising a box body and a box cover, the box body is provided with an opening, the battery can enter the box body through the opening, the box cover can be sealed and arranged on the opening of the box body to define a sealed space, the sealed space can limit the position of the battery with different sizes; the box cover is provided with a short-circuit probe and a detection tube, the short-circuit probe is used for pulse short-circuit detection, and the detection tube is used for sealing detection;

[0008] A driving assembly is drivingly connected to at least one of the box body and the box cover to separate and connect the box body and the box cover.

[0009] Preferably, a plurality of limiting members are arranged in the box body, and the plurality of limiting members are detachably connected to form a limiting frame, and the positions of some of the limiting members are adjustably arranged to limit the battery in the limiting frame.

[0010] Preferably, a plurality of limiting connectors are arranged in an array on the bottom surface of the box body. The plurality of limiting connectors detachably connect the box body to the plurality of limiting members, and the positions of the limiting members are adjustable through the plurality of limiting connectors, so as to change the shape or size of the limiting frame. The limiting frame is configured to have at least a first state and a second state, and the batteries with different shapes or different sizes can be respectively limited in the first state and the second state.

[0011] Preferably, the limiting member and the limiting connector are detachably connected by at least one of screw connection, plug connection, and sliding groove connection; and / or

[0012] Adjacent two of the limiting members are detachably connected by at least one of screw connection, plug connection, and sliding groove connection.

[0013] Preferably, the driving assembly includes a first driving assembly and a second driving assembly.

[0014] The first driving assembly is used to drive the box body to move closer to and away from the box cover along a preset first direction, and the preset first direction is the opening direction of the box body.

[0015] The second driving assembly is used to drive the box cover to move closer to and away from the box body along a preset second direction, and the preset second direction is perpendicular to the opening direction of the box body.

[0016] Preferably, the battery detection device further includes a guiding assembly. The guiding assembly includes a fixedly arranged sliding rod, the sliding rod is arranged along the preset second direction, and the box cover is slidably connected to the sliding rod.

[0017] Preferably, the detection tube includes a vacuum tube, a helium injection tube, and a helium detection tube. The vacuum tube and the helium detection tube penetrate through the box cover and can communicate with the sealed space. The helium injection tube penetrates through the box cover and can communicate with the liquid injection hole of the battery. The vacuum tube is used to evacuate and break the vacuum of the sealed space. The helium detection tube is used to detect the helium content in the sealed space. The helium injection tube is used to evacuate and inject helium into the battery.

[0018] Preferably, the vacuum tube and the helium detection tube include a common section. The common section penetrates through the box cover, and the common section can communicate with the sealed space. The helium injection tube is partially sleeved in the common section and can communicate with the liquid injection hole of the battery.

[0019] The detection tube further includes a plurality of valve body assemblies, which are respectively used to control the on-off of the vacuum tube, the helium detection tube, and the helium injection tube.

[0020] Preferably, the short - circuit probe includes a positive - pole probe and a negative - pole probe. Both the positive - pole probe and the negative - pole probe are disposed on the box cover in a position - adjustable manner. The positive - pole probe is used for electrically connecting to the positive pole of the battery, and the negative - pole probe is used for electrically connecting to the negative pole of the battery.

[0021] Advantages of the present utility model: Through this battery detection device, after forming a sealed space, it can simultaneously achieve pulse short - circuit detection and sealing detection with a relatively simple structure in one detection step. This not only avoids the overly large volume of the battery detection device but also improves the detection efficiency. At the same time, this battery detection device can be compatible with batteries of different sizes, avoiding or simplifying the operation process of changing models, reducing the detection cost, and further improving the detection efficiency.

[0022] The purpose of the present utility model is to provide a battery detection system with high detection efficiency and low detection cost.

[0023] To achieve this purpose, the present utility model adopts the following technical solutions:

[0024] A battery detection system, including a control device and the above - mentioned battery detection device. The control device is used to control the detection and feedback the detection result of the battery detection device on the battery.

[0025] Advantages of the present utility model: By using the above - mentioned battery detection device in the battery detection system, after forming a sealed space, it can simultaneously achieve pulse short - circuit detection and sealing detection with a relatively simple structure in one detection step. This not only avoids the overly large volume of the battery detection system but also improves the detection efficiency. At the same time, this battery detection system can be compatible with batteries of different sizes, avoiding or simplifying the operation process of changing models, reducing the detection cost, and further improving the detection efficiency. Description of the Drawings

[0026] Figure 1 is a perspective view of the battery detection device provided by the present utility model;

[0027] Figure 2 is a top view of the battery detection device provided by the present utility model;

[0028] Figure 3 is Figure 2 a partial enlarged view of part A in

[0029] Figure 4 is a side view of the battery detection device provided by the present utility model;

[0030] Figure 5 is a bottom view of the battery detection device provided by the present utility model;

[0031] Figure 6 is Figure 2 a partial enlarged view of position B in

[0032] Figure 7 is a cross-sectional view of the box cover along the Figure 6 C-C direction in

[0033] In the figure:

[0034] 11. Box body; 111. Threaded hole; 112. Bolt; 12. Box cover; 121. Slide rail; 122. Slide block; 123. Positive probe; 124. Negative probe; 125. Vacuum tube; 126. Helium detector tube; 127. Helium injection tube;

[0035] 21. Driving cylinder;

[0036] 31. Limiting part; 311. Depressed part; 312. Protruding part; 32. Limiting connecting piece;

[0037] 41. Rotating motor; 42. Box cover mounting part; 43. Lead screw;

[0038] 51. Sliding rod. Specific embodiments

[0039] The following further details the present utility model in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. Additionally, it should be noted that for the sake of description, only parts related to the present utility model rather than all structures are shown in the drawings.

[0040] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", "fixed", "abutted" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0041] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0042] In the description of this embodiment, the terms "upper", "lower", "right", "left" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0043] The following is based on the attached Figure 1 To Attachment Figure 7 The utility model introduces a battery detection device.

[0044] like Figure 1 , Figure 2 As shown, the battery detection device in this embodiment is mainly composed of a detection box and a drive assembly. The detection box includes a box body 11 and a box cover 12. The top of the box body 11 is designed with an opening to facilitate the battery to enter the box body 11 through the opening. The box cover 12 can be tightly covered at the opening of the box body 11 to form a sealed space, which is convenient for sealing detection. This sealed space is cleverly designed and can flexibly adapt to and limit the accommodation of batteries of different sizes, which significantly improves the versatility of the battery detection device and simplifies the changeover operation process.

[0045] The box cover 12 is integrated with a short-circuit probe and a detection tube, and the driving component is connected to the box body 11 or the box cover 12 (or both are connected) and is responsible for realizing the separation and connection of the box body 11 and the box cover 12. When the box body 11 and the box cover 12 are separated, the battery can be easily placed in the box body 11 through the opening; once the two are connected, a sealed space is immediately formed, creating conditions for the sealing test through the detection tube. At the same time, in this connected state, the short-circuit probe is electrically connected to the battery, so that the pulse short-circuit test can be carried out smoothly.

[0046] With this battery detection device, after forming a sealed space, it can simultaneously achieve pulse short - circuit detection and sealing detection with a relatively simple structure in one detection step, not only avoiding the over - sized volume of the battery detection device but also improving the detection efficiency. At the same time, this battery detection device can be compatible with batteries of different sizes, avoiding or simplifying the operation process of changing models, reducing the detection cost, and further improving the detection efficiency.

[0047] The bottom surface of the box body 11 is provided with a limiting member 31 for limiting the battery. Specifically, as Figure 2 、 Figure 3 shown, at least two limiting members 31 are arranged in the box body 11 to limit the battery between at least two limiting members 31. And at least one of the limiting members 31 is arranged with adjustable position, so that the distance between the limiting members 31 is adjustable. When it is necessary to limit and fix a battery with a larger or smaller size, the distance between the limiting members 31 can be adjusted to respectively achieve the limiting and fixing of batteries with different sizes.

[0048] Of course, in some other embodiments, two, three, four or more limiting members 31 can also be arranged in the box body 11. As long as the battery can be limited by the limiting members 31, it belongs to the scope protected by this utility model.

[0049] Exemplarily, as Figure 2 shown, for example, when the battery is a square battery, at least four limiting members 31 are installed on the bottom surface of the box body 11, and at least one limiting member 31 abuts against each of the four sides of the battery, so that the battery is abutted and limited between at least four limiting members 31, thereby stably limiting and fixing the battery. When it is necessary to fix a battery with a different length or width, the installation position of the corresponding limiting member 31 can be adjusted to meet the limiting and fixing requirements of batteries with different sizes.

[0050] Preferably, as Figure 2 、 Figure 3 shown, a plurality of limiting members 31 are detachably connected and form a square limiting frame, and the battery is limited in the square limiting frame. There are a first state and a second state between the plurality of limiting members 31. In the first state and the second state, limiting frames with different shapes or sizes can be respectively formed to correspondingly limit batteries with different sizes. Further, in the first state and the second state, the plurality of limiting members 31 can enclose to form a limiting frame to limit and accommodate the battery, which can not only improve the ability to limit and fix the battery but also avoid the negative pressure effect on the battery shell during the sealing detection.

[0051] Specifically, as Figure 2 、 Figure 3As shown, a plurality of limiting connectors 32 are arranged in an array on the bottom surface of the box body 11. The limiting connectors 32 are detachably connected to the box body 11 and are also detachably connected to the above-mentioned limiting members 31. By changing the position or quantity of the connection between the limiting members 31 and the limiting connectors 32, the shape or size of the limiting frame can be changed, so that the plurality of limiting members 31 can be switched between the first state and the second state, and then batteries with different shapes or sizes can be limited and accommodated. Exemplarily, in this embodiment, a plurality of threaded holes 111 are arranged in an array on the bottom surface of the box body 11. Through bolts 112, the plurality of limiting connectors 32 can be respectively detachably fixed at different positions on the bottom surface of the box body 11, thus facilitating the change of the size or shape of the limiting frame.

[0052] More specifically, as Figure 3 shown, in this embodiment, the limiting member 31 and the limiting connector 32 are detachably connected in a plug-in manner, and adjacent two limiting members 31 are also detachably connected in a plug-in manner. Exemplarily, taking the limiting member 31 as an example, between two adjacent limiting members 31, one is provided with a recess 311, and the other is provided with a protrusion 312. The protrusion 312 can be limited and plugged into the recess 311, so that the two limiting members 31 are plugged and connected in a mortise and tenon manner.

[0053] There are at least four limiting connectors 32, and the four limiting connectors 32 are respectively arranged around the bottom surface of the box body 11. For example, they are arranged at the four corners of the bottom surface of the rectangular box body 11. That is, a plurality of threaded holes 111 are arranged in an array on the bottom surface of the box body 11. Select four at the four corner positions, and connect the four limiting connectors 32 through bolts 112. The limiting members 31 are detachably (such as plugging, etc.) connected to the four limiting connectors 32, and the plurality of limiting members 31 are sequentially plugged between two adjacent limiting connectors 32, thus forming a limiting frame, and the battery can be limited within the limiting frame. It can be understood that the limiting members 31 and the limiting connectors 32 can also be sequentially connected to form a limiting frame; by sequentially connecting different numbers of the plurality of limiting members 31 and the limiting connectors 32, limiting frames of different sizes can be formed.

[0054] Optionally, in some other embodiments, the limiting member 31 and the limiting connector 32 can also be detachably connected in at least one of a threaded connection or a sliding groove connection manner, and adjacent two limiting members 31 can also be detachably connected in at least one of a threaded connection or a sliding groove connection manner, and these also fall within the scope of protection of the present utility model.

[0055] Of course, in some other embodiments, for batteries of other shapes, a plurality of limiting members 31 arranged and connected into a limiting cavity corresponding to the shape can also be used for limiting and fixing. The present utility model does not make specific limitations thereto. Moreover, in some special embodiments, only one limiting member 31 can be provided, and the battery is arranged between the limiting member 31 and the inner wall of the box body 11. In this way, the effect of limiting and fixing can also be achieved, and the batteries with different sizes can also be compatible by adjusting the position of the limiting member 31 installed in the box body 11, which also belongs to the scope protected by the present utility model.

[0056] As Figure 4 shown, the driving assembly includes a first driving assembly, and the first driving assembly is used to drive the box cover 12 and the box body 11 to separate along a preset first direction (i.e., the opening direction of the box body 11). The first driving assembly includes a driving cylinder 21, and the driving cylinder 21 is connected to the box body 11 and is used to drive the box body 11 to move close to and away from the box cover 12 along the preset first direction, so as to facilitate the taking and placing and sealing of the battery. Of course, in some other embodiments, the driving cylinder 21 can also be connected to the box cover 12 and drive the box cover 12 to move close to and away from the box body 11 along the preset first direction, which can also facilitate the taking and placing and sealing of the battery, and also belongs to the scope protected by the present utility model.

[0057] As Figure 5 shown, the driving assembly further includes a second driving assembly, which is used to drive the box cover 12 to move close to and away from the box body 11 along a preset second direction, and the preset second direction is perpendicular to the opening direction of the box body 11. Through the second driving assembly, the box cover 12 can be deviated from the box body 11 to completely open the opening of the box body 11, facilitating the placement of the battery into the box body 11. Specifically, the second driving assembly includes a rotating motor 41 and a lead screw 43. The lead screw 43 is rotatably penetrated through a box cover mounting member 42, and the box cover 12 is mounted on the box cover mounting member 42. When the lead screw 43 rotates under the action of the rotating motor 41, the box cover mounting member 42 can be driven to move, so that the box cover 12 moves towards or away from the box body 11. When the box cover 12 moves to face the opening of the box body 11, through the first driving assembly, the box body 11 can be made to move towards the box cover 12 until the box cover 12 is hermetically covered on the opening of the box body 11.

[0058] Furthermore, as Figure 5 shown, the battery detection device further includes a guiding assembly. The guiding assembly includes a fixedly arranged sliding rod 51 (both ends of the sliding rod 51 are fixedly arranged through a base), which is arranged along the preset second direction. The box cover mounting member 42 is slidably connected to the sliding rod 51 and can slide close to and away from the box body 11 along the preset second direction. Through the guiding assembly, the box cover 12 can be moved with higher efficiency to completely open the opening of the box body 11, facilitating the placement of the battery into the box body 11 with higher efficiency.

[0059] like Figure 5 As shown, the short-circuit probe is arranged on the bottom surface of the box cover 12, and can be connected to the positive and negative electrodes of the battery when the box cover 12 is covered on the box body 11. The short-circuit probe includes a positive electrode probe 123 and a negative electrode probe 124, both of which are adjustable in position on the box cover 12. Among them, the positive electrode probe 123 is used to electrically connect the positive electrode of the battery, and the negative electrode probe 124 is used to electrically connect the negative electrode of the battery, thereby realizing pulse short circuit detection.

[0060] Specifically, two slide rails 121 are provided on the bottom surface of the box cover 12, and a slider 122 is slidably provided on each slide rail 121. The positive probe 123 and the negative probe 124 are respectively provided on the two sliders 122. By sliding the slider 122 along the slide rail 121, the position adjustment of the positive probe 123 and the negative probe 124 can be achieved.

[0061] like Figure 6 , Figure 7 As shown, the detection tube includes a vacuum tube 125, a helium injection tube 127 and a helium detection tube 126. The vacuum tube 125 and the helium detection tube 126 are arranged through the box cover 12 and can be communicated with the sealed space. The helium injection tube 127 is arranged through the box cover 12 and can be communicated with the injection hole of the battery. Among them, the vacuum tube 125 is used to evacuate and break the vacuum of the sealed space, the helium detection tube 126 is used to detect the helium content in the sealed space, and the helium injection tube 127 is used to evacuate and inject helium into the battery. In this embodiment, the ends of the vacuum tube 125 and the helium detection tube 126 are connected to form a common section, that is, the vacuum tube 125 and the helium detection tube 126 are connected and arranged in a Y-shaped pipeline. The common section is arranged through the box cover 12 and is communicated with the above-mentioned sealed space. The helium injection tube 127 is inserted into the common section, and a part of the helium injection tube 127 is sleeved in the common section. At the same time, the bottom end of the helium injection tube 127 protrudes from the common section so that after the sealed space is formed, the helium injection tube 127 can be connected to the injection hole of the battery, and the common section is connected to the sealed space.

[0062] The detection tube further includes a plurality of valve body components, which are respectively arranged on the vacuum tube 125, the helium injection tube 127, and the helium detection tube 126 to respectively control the on-off of the vacuum tube 125, the helium injection tube 127, and the helium detection tube 126. During use, first, the vacuum tube 125 is turned on to evacuate the sealed space, and then pressure is maintained to detect whether the battery has serious air leakage (at this time, both the helium injection tube 127 and the helium detection tube 126 are closed). Then, the helium injection tube 127 is turned on to evacuate the inside of the battery through the helium injection tube 127, and then helium is injected. Finally, the helium detection tube 126 is turned on, and it can be detected through the helium detection tube 126 whether helium leaks from the inside of the battery to the outside of the battery (i.e., into the sealed space), thereby realizing the detection of the battery's sealing performance. After the detection is completed, the vacuum tube 125 is turned on again to break the vacuum through the vacuum tube 125, which will not have a negative impact on the separation of the lid 12 and the box body 11.

[0063] The present utility model also provides a battery detection system, which includes a control device and the above-mentioned battery detection device. The control device is signal-connected to the battery detection device to control the detection process and feedback the detection result of the battery detection device on the battery. By using this battery detection device, after the sealed space is formed, it is possible to simultaneously achieve pulse short-circuit detection and sealing performance detection with a relatively simple structure in one detection step, which not only avoids the overly large volume of the battery detection system but also improves the detection efficiency. At the same time, this battery detection system can be compatible with batteries of different sizes, avoiding or simplifying the operation process of changing models, reducing the detection cost, and further improving the detection efficiency.

[0064] Obviously, the above-mentioned embodiments of the present utility model are merely examples for clearly explaining the present utility model and are not limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, various obvious changes, re-adjustments, and substitutions can be made without departing from the protection scope of the present utility model. It is not necessary and impossible to list all the implementation manners here. Any modifications, equivalent substitutions, and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims

1. Battery detection device, characterized in that, Included are: A detection box, the detection box comprising a box body (11) and a box cover (12), the box body (11) being provided with an opening, through which a battery can enter the box body (11), the box cover (12) being able to seal the opening of the box body (11) to define a sealed space, wherein the sealed space can limit the position of batteries of different sizes; the box cover (12) being provided with a short-circuit probe and a detection tube, the short-circuit probe being used for pulse short-circuit detection, and the detection tube being used for sealing detection; A driving component is drivingly connected to at least one of the box body (11) and the box cover (12) to separate and connect the box body (11) and the box cover (12).

2. The battery detection device according to claim 1, characterized in that: A plurality of limiting members (31) are arranged in the box body (11); the plurality of limiting members (31) are detachably connected to form a limiting frame, and some of the limiting members (31) are arranged in an adjustable position so as to limit the battery in the limiting frame.

3. The battery detection device according to claim 2, characterized in that: The bottom array of the box body (11) is provided with a plurality of limiting connecting members (32), and the plurality of limiting connecting members (32) are detachably connected to the box body (11) and the plurality of limiting members (31). The position of the limiting members (31) is adjustable through the plurality of limiting connecting members (32) to change the shape or size of the limiting frame. The limiting frame is configured to have at least a first state and a second state. In the first state and the second state, the batteries having different shapes or sizes can be limited respectively.

4. The battery detection device according to claim 3, characterized in that: The limiting member (31) and the limiting connecting member (32) are detachably connected by at least one of a threaded connection, a plug connection, and a sliding groove connection; and / or; Two adjacent limiting members (31) are detachably connected via at least one of threaded connection, plug-in connection, and slide groove connection.

5. The battery detection device according to claim 1, characterized in that: The drive assembly comprises a first drive assembly and a second drive assembly, The first driving assembly is used to drive the box body (11) to move toward and away from the box cover (12) along a preset first direction, and the preset first direction is the opening direction of the box body (11); The second driving assembly is used to drive the box cover (12) to move closer to and farther from the box body (11) along a preset second direction, and the preset second direction is perpendicular to the opening direction of the box body (11).

6. The battery detection device according to claim 5, characterized in that: The battery detection device further comprises a guide assembly, wherein the guide assembly comprises a fixedly arranged sliding rod (51), the sliding rod (51) is arranged along the preset second direction, and the box cover (12) is slidably connected to the sliding rod (51).

7. The battery detection device according to claim 1, characterized in that: The detection tube includes a vacuum tube (125), a helium injection tube (127), and a helium detection tube (126). The vacuum tube (125) and the helium detection tube (126) penetrate through the box cover (12) and can communicate with the sealed space. The helium injection tube (127) penetrates through the box cover (12) and can communicate with the liquid injection hole of the battery. The vacuum tube (125) is used to evacuate and break the vacuum of the sealed space. The helium detection tube (126) is used to detect the helium content in the sealed space. The helium injection tube (127) is used to evacuate and inject helium into the battery interior.

8. The battery detection device according to claim 7, wherein the vacuum tube (125) and the helium detection tube (126) include a common section. The common section penetrates through the box cover (12). The common section can communicate with the sealed space. The helium injection tube (127) is partially sleeved in the common section and can communicate with the liquid injection hole of the battery; the detection tube further includes a plurality of valve body components, which are respectively used to control the on-off of the vacuum tube (125), the helium detection tube (126), and the helium injection tube (127).

9. The battery detection device according to claim 1, wherein the short-circuit probe includes a positive probe (123) and a negative probe (124). The positive probe (123) and the negative probe (124) are both arranged on the box cover (12) with adjustable positions. The positive probe (123) is used to electrically connect to the positive electrode of the battery. The negative probe (124) is used to electrically connect to the negative electrode of the battery.

10. Battery detection system, characterized in that, It includes a control device and the battery detection device according to any one of claims 1-9. The control device is used to control the detection and feedback of the detection result of the battery by the battery detection device.