Battery short circuit detection device

Abstract

The utility model relates to the technical field of battery manufacturing, and particularly discloses a battery short circuit detection device for detecting a high-voltage loop of a battery module in a battery manufacturing process, the battery short circuit detection device comprises a detection control cabinet, a power mechanism, a first probe and a second probe, the detection control cabinet and the power mechanism are arranged at an interval; the detection control cabinet is electrically connected with the power mechanism, the power mechanism comprises a first carrying seat and a second carrying seat which can move along a preset track, the first carrying seat and the second carrying seat can be close to each other or away from each other, the first probe is arranged on the first carrying seat, the first probe is elastically connected with the first carrying seat, the second probe is arranged on the second carrying seat, and the second probe is elastically connected with the second carrying seat. The second probe is elastically connected with the second carrying seat, and the first probe and the second probe are electrically connected with the detection control cabinet. When the battery short circuit detection device is used for detecting the short circuit of the high-voltage loop of the battery module, an operator can be prevented from being hurt.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery manufacturing, in particular to a battery short circuit detection device for detecting high-voltage loop of a battery in a battery manufacturing process. BACKGROUND

[0002] With the rapid development of the new energy vehicle industry, the safety and reliability of the high-voltage battery system, as one of the core power sources of the vehicle, are crucial. The short circuit fault of the high-voltage loop (B-class loop) of the battery module may lead to thermal runaway, component damage, and even fire, and thus the detection of the short circuit state of the high-voltage loop of the battery module is a key condition for ensuring the safe operation of the high-voltage battery system. At present, the detection of the short circuit of the high-voltage loop of the battery module is usually performed manually, that is, an operator holds a test pen or a probe to detect the key nodes in the high-voltage loop of the battery module to determine whether there is a short circuit abnormality or fault.

[0003] However, the manual detection has the following problems: when the high-voltage loop of the battery module has a short circuit abnormality or fault, the loop voltage may be as high as 400V or above, which may easily cause electric shock to the operator, and in addition, the manual holding of the test pen or the probe to make rigid contact with the key nodes in the high-voltage loop of the battery module may cause electric shock to the operator. CONTENT OF THE INVENTION

[0004] In view of the above, it is necessary to provide a battery short circuit detection device to avoid causing harm to the operator when detecting the short circuit of the high-voltage loop of the battery module.

[0005] The present application provides a battery short circuit detection device, which comprises a detection control cabinet, a power mechanism, a first probe and a second probe. The detection control cabinet is arranged apart from the power mechanism and electrically connected to the power mechanism. The power mechanism comprises a first carrier and a second carrier which can move along a preset track and can approach or move away from each other. The first probe is arranged on the first carrier and elastically connected to the first carrier. The second probe is arranged on the second carrier and elastically connected to the second carrier. The first probe and the second probe are electrically connected to the detection control cabinet.

[0006] In some embodiments, the power mechanism further comprises a first power assembly, a second power assembly, and a third power assembly, the second power assembly is connected with the first power assembly, the third power assembly is connected with the second power assembly, the first carrier and the second carrier are both connected with the third power assembly, the first power assembly, the second power assembly, and the third power assembly cooperatively drive the first carrier and the second carrier to move along the preset track, and the third power assembly drives the first carrier and the second carrier to move closer to or away from each other.

[0007] In some embodiments, the third power assembly is a bidirectional screw rod.

[0008] In some embodiments, the third power assembly comprises a first linear component and a second linear component, the first linear component and the second linear component are both connected with the second power assembly, the first linear component and the second linear component are configured to be driven in opposite directions, the first carrier is connected with the first linear component, and the second carrier is connected with the second linear component.

[0009] In some embodiments, one of the first probe and the second probe is a positive probe, and the other is a negative probe, and the first probe and the second probe are both spring copper probes.

[0010] In some embodiments, the battery short circuit detection device further comprises a first wire and a second wire, the first wire is electrically connected between the detection control cabinet and the first probe, and the second wire is electrically connected between the detection control cabinet and the second probe.

[0011] In some embodiments, the detection control cabinet comprises a short circuit detector and a host computer, the short circuit detector is electrically connected with the host computer, the first probe and the second probe are both electrically connected with the short circuit detector, and the host computer is electrically connected with the power mechanism.

[0012] In some embodiments, the detection control cabinet further comprises a cabinet body, and the short circuit detector and the host computer are both arranged in the cabinet body.

[0013] In some embodiments, the detection control cabinet further comprises a first control component and a second control component, the first control component and the second control component are both arranged in the cabinet body, and the first control component and the second control component are both electrically connected with the host computer, and the first control component and the second control component are respectively used for controlling start-stop and emergency.

[0014] In some embodiments, the detection control cabinet further comprises a display assembly, the display assembly is arranged in the cabinet body, and the display assembly is electrically connected with the host computer.

[0015] The battery short circuit detection device provided in the embodiment of the present application can detect the short circuit of the high-voltage loop of the battery module. When detecting the short circuit of the high-voltage loop of the battery module, the detection control cabinet sends a detection instruction, and the power mechanism drives the first probe and the second probe to move along the preset track according to the detection instruction, so that the first probe and the second probe elastically contact the detection nodes in the high-voltage loop of the battery module, respectively. The detection control cabinet receives the signals detected by the first probe and the second probe and judges whether the short circuit of the high-voltage loop of the battery module is abnormal or faulty.

[0016] The battery short circuit detection device provided in the embodiment of the present application can detect the short circuit of the high-voltage loop of the battery module. When detecting the short circuit of the high-voltage loop of the battery module, the detection control cabinet sends a detection instruction, and the power mechanism drives the first probe and the second probe to move along the preset track according to the detection instruction, so that the first probe and the second probe elastically contact the detection nodes in the high-voltage loop of the battery module, respectively. The detection control cabinet receives the signals detected by the first probe and the second probe and judges whether the short circuit of the high-voltage loop of the battery module is abnormal or faulty.

[0017] In addition, by limiting the elastic connection of the first probe and the first carrier and the elastic connection of the second probe and the second carrier, the first probe and the second probe elastically contact the detection nodes in the high-voltage loop of the battery module when they contact the detection nodes. The elastic force can compensate for the unevenness or position deviation of the surface of the detection node, improve the adaptability of the battery short circuit detection device, ensure stable contact between the first probe and the second probe and the detection node, and improve the detection stability. When the first probe and the second probe are separated from the detection node, they can slowly separate from the detection node through the elastic force, thereby reducing the risk of high-voltage sparking and avoiding electric shock injury to the operator. Moreover, the elastic contact of the first probe and the second probe with the detection node can also buffer the pressure and reduce the scratching of the detection nodes in the high-voltage loop of the battery module, protect the appearance of the high-voltage loop of the battery module, and maintain a constant pressure between the first probe, the second probe and the detection node through the elastic force, which can cope with the moving or vibrating environment. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic diagram of the battery short circuit detection device provided in the embodiment of the present application.

[0019] Figure 2 is a hardware architecture schematic diagram of the battery short circuit detection device provided in the embodiment of the present application.

[0020] Main element symbol explanation: battery short circuit detection device 100, detection control cabinet 10, short circuit detector 11, upper computer 12, cabinet body 13, first control member 14, second control member 15, display assembly 16, power mechanism 20, first carrier 21, second carrier 22, first power assembly 23, second power assembly 24, third power assembly 25, support seat 26, first probe 30, second probe 40, first wire 50, second wire 60, battery module 200, first battery module 201, second battery module 202, connecting wire 203, circuit breaker 204. DETAILED DESCRIPTION

[0021] Embodiments of the present application are described in detail below with reference to the accompanying drawings. The embodiments described below are examples for explaining the present application and should not be construed as limiting the present application.

[0022] In the description of the present application, it should be understood that the terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the purpose of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be construed as limiting the present application. In addition, the terms "first" and "second" are for descriptive purposes only and cannot be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, it should be noted that the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0023] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the term "connection" should be broadly understood, for example, it can be a fixed connection, or a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection or can communicate with each other, it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above-mentioned term in the present application can be understood according to the specific circumstances.

[0024] Some embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0025] Please refer to Figure 1 and Figure 2The battery short circuit detection device 100 is used for detecting the high-voltage loop formed by the battery module 200, and can avoid electric shock injury to the operator when the high-voltage loop of the battery module 200 has a short circuit abnormality or a fault. The battery module 200 includes a first battery module 201, a second battery module 202, a connecting line 203, and a circuit breaker 204. The first battery module 201 is electrically connected to the circuit breaker 204 through the connecting line 203, and the second battery module 202 is electrically connected to the circuit breaker 204 through the connecting line 203. The connecting line 203 can be a copper bar. The first battery module 201 and the second battery module 202 each have a detection node. When the battery short circuit detection device 100 detects the battery module 200, the battery short circuit detection device 100 and the battery module 200 form a high-voltage loop.

[0026] The battery short circuit detection device 100 includes a detection control cabinet 10, a power mechanism 20, a first probe 30, and a second probe 40. For the convenience of understanding and description, the XYZ coordinate system shown in FIG. 1 is defined in the embodiments of the present application, wherein the X axis is the first direction, the Y axis is the second direction, and the Z axis is the third direction. It can be understood that this is not a limitation of the embodiments of the present application. Figure 1

[0027] The detection control cabinet 10 is configured to have functions of detecting a short circuit, generating an instruction, sending the instruction, inputting data, changing data, receiving data, processing data, storing data, displaying data, and the like. The embodiments of the present application will not be described here. The detection control cabinet 10 is spaced apart from the power mechanism 20, and the detection control cabinet 10 is electrically connected to the power mechanism 20. The power mechanism 20 includes a first carrier 21 and a second carrier 22 that can move along a preset trajectory, and the first carrier 21 and the second carrier 22 can approach or move away from each other. The preset trajectory can be at least one of the first direction, the second direction, and the third direction, or a combination thereof, which can be limited according to actual conditions. In actual use, the detection control cabinet 10 sends a detection instruction, and the power mechanism 20 receives the detection instruction and drives the first carrier 21 and the second carrier 22 to move along the preset trajectory according to the detection instruction. The first probe 30 is arranged on the first carrier 21, and the first probe 30 is elastically connected to the first carrier 21. The second probe 40 is arranged on the second carrier 22, and the second probe 40 is elastically connected to the second carrier 22. The first probe 30 and the second probe 40 are both electrically connected to the detection control cabinet 10. In the embodiments of the present application, one of the first probe 30 and the second probe 40 is a positive probe, and the other is a negative probe. The first probe 30 and the second probe 40 are both spring-type copper probes. It can be understood that in other embodiments, the first probe 30 and the second probe 40 can also be elastically connected to the first carrier 21 and the second carrier 22, respectively, through springs or the like.

[0028] ​The battery short circuit detection device 100 detects the high-voltage loop of the battery module 200. The detection control cabinet 10 sends a detection instruction. The power mechanism 20 drives the first carrier 21 and the first probe 30 thereon, and the second carrier 22 and the second probe 40 thereon to move along a preset track according to the detection instruction, so that the first probe 30 and the second probe 40 elastically contact the detection nodes in the high-voltage loop of the battery module 200, for example, the first probe 30 elastically contacts the first battery module 201, and the second probe 40 elastically contacts the second battery module 202. The battery module 200, the first probe 30, the second probe 40, and the control cabinet 10 form a high-voltage loop. The detection control cabinet 10 receives signals detected by the first probe 30 and the second probe 40 and judges whether the high-voltage loop of the battery module 200 is abnormal or faulty, thereby realizing detection of the high-voltage loop of the battery module 200.

[0029] In some embodiments, the detection control cabinet 10 includes a short circuit detector 11 and a host computer 12. The short circuit detector 11 is electrically connected to the host computer 12. The first probe 30 and the second probe 40 are both electrically connected to the short circuit detector 11. The host computer 12 is electrically connected to the power mechanism 20. The short circuit detector 11 receives signals detected by the first probe 30 and the second probe 40 and judges whether the high-voltage loop of the battery module 200 is abnormal or faulty. The short circuit detector 11 sends the judgment result to the host computer 12. The host computer 12 receives the judgment result for storage, display, and other processing. The host computer 12 can also perform data input, data modification, and other operations. For example, the host computer 12 receives data information such as the positions of the detection nodes of the high-voltage loop of the battery module 200 to be detected. The host computer 12 can generate corresponding detection instructions according to the input data information, so as to accurately and quickly detect the high-voltage loop of the battery module 200. In this way, the short circuit detector 11 is provided to judge whether the short circuit of the high-voltage loop of the battery module 200 is abnormal or faulty. The host computer 12 is provided to enable the detection control cabinet 10 to generate instructions, send instructions, input data, modify data, receive data, process data, store data, and display data.

[0030] In some embodiments, the detection control cabinet 10 further includes a cabinet body 13. The short circuit detector 11 and the host computer 12 are both arranged in the cabinet body 13. In this way, the cabinet body 13 is provided to protect the short circuit detector 11 and the host computer 12, thereby improving the safety of the battery short circuit detection device 100.

[0031] In some embodiments, the detection control cabinet 10 further comprises a first control member 14 and a second control member 15. The first control member 14 and the second control member 15 are both arranged on the cabinet body 13, and the first control member 14 and the second control member 15 are both electrically connected with the host computer 12. The first control member 14 and the second control member 15 are respectively used for controlling start-stop and emergency. For example, the first control member 14 is a start-stop button. By pressing, rotating, dialing, touching or sensing the first control member 14, the host computer 12 receives the signal of the first control member 14 to generate a detection instruction to start or stop detection. The second control member 15 is an emergency button. By pressing, rotating, dialing, touching or sensing the second control member 15, the emergency function such as emergency stop function is realized to improve the safety of the battery short circuit detection device 100. It can be understood that in other embodiments, the first control member 14 can also be provided as two, one of which is a start button and the other is a stop button. Alternatively, the detection control cabinet 10 can further comprise more buttons, and the functions of the buttons can be set according to specific conditions, which are not limited in the embodiments of the present application.

[0032] In some embodiments, the detection control cabinet 10 further comprises a display assembly 16 arranged on the cabinet body 13, and the display assembly 16 is electrically connected with the host computer 12. In the embodiments, the display assembly 16 can be a display screen, which is used for displaying the detection results so as to enable the operator to intuitively observe the detection results. Alternatively, the operator can also input data information to the host computer 12 through the display assembly 16.

[0033] It can be understood that in other embodiments, the detection control cabinet 10 can further comprise an alarm lamp, a buzzer and the like to enable the detection control cabinet 10 to also have the function of emitting sound and light warning.

[0034] In some embodiments, the battery short circuit detection device 100 further comprises a first lead wire 50 and a second lead wire 60. The first lead wire 50 is electrically connected between the detection control cabinet 10 and the first probe 30, and the second lead wire 60 is electrically connected between the detection control cabinet 10 and the second probe 40. Specifically, the first lead wire 50 is electrically connected between the short circuit detector 11 and the first probe 30, and the second lead wire 60 is electrically connected between the short circuit detector 11 and the second probe 40. For example, the first lead wire 50 can be connected with the first probe 30 by a bolt and fixed on the first carrier 21, and the second lead wire 60 can be connected with the second probe 40 by a bolt and fixed on the second carrier 22. The first lead wire 50 and the second lead wire 60 can both be copper lead wires. In this way, by arranging the first lead wire 50 and the second lead wire 60, the first probe 30 and the second probe 40 are electrically connected with the short circuit detector 11 of the detection control cabinet 10, so that the signals detected by the first probe 30 and the second probe 40 are transmitted to the short circuit detector 11.

[0035] In some embodiments, the power mechanism 20 further includes a first power assembly 23, a second power assembly 24, and a third power assembly 25. The second power assembly 24 is connected to the first power assembly 23, the third power assembly 25 is connected to the second power assembly 24, and the first carrier 21 and the second carrier 22 are both connected to the third power assembly 25. The first power assembly 23, the second power assembly 24, and the third power assembly 25 cooperate to drive the first carrier 21 and the second carrier 22 to move along a preset trajectory, and the third power assembly 25 drives the first carrier 21 and the second carrier 22 to move closer to or away from each other. In this embodiment, the first power assembly 23 can be a linear module, the second power assembly 24 can be a linear module, and the third power assembly 25 can be a bidirectional screw. The specific structure of the bidirectional screw is not described in detail in this embodiment of the application. The first power assembly 23 drives the second power assembly 24 to move in the first direction, the second power assembly 24 drives the third power assembly 25 to move in the third direction, and the third power assembly 25 drives the first carrier 21 and the second carrier 22 to move closer to or away from each other along the second direction. In this way, by setting the above-mentioned first power component 23, second power component 24 and third power component 25, the first carrier 21 and the second carrier 22 can move along a preset trajectory, and the first carrier 21 and the second carrier 22 can approach or move away from each other, and the power mechanism 20 can make the first probe 30 and the second probe 40 stably contact the detection node.

[0036] It is understandable that in other embodiments, the first power assembly 23 and the second power assembly 24 may also be other functional structures capable of linear movement, such as linear cylinders, ball screws, etc. The third power assembly 25 may also include a first linear member and a second linear member, both of which are connected to the second power assembly 24. The first linear member and the second linear member may both be cylinders. The first linear member and the second linear member are configured to have opposite driving directions, with the first carrier 21 connected to the first linear member and the second carrier 22 connected to the second linear member. In this way, the third power assembly 25 can still drive the first carrier 21 and the second carrier 22 to move closer to or away from each other, and the first linear member and the second linear member can replace the bidirectional screw.

[0037] In some embodiments, the power mechanism 20 further includes a support base 26, which is spaced apart from the detection and control cabinet 10, and the first power assembly 23 is mounted on the support base 26. Thus, the support base 26 supports the first power assembly 23, the second power assembly 24, and the third power assembly 25. It is understood that in other embodiments, the power mechanism 20 may further include a gantry, with the first power assembly 23 mounted on the gantry. In this case, the gantry can replace the support base 26.

[0038] The battery short circuit detection device 100 of the embodiment of the present application realizes detection of the high-voltage loop of the battery module 200 by detecting the control cabinet 10, the power mechanism 20, the first probe 30 and the second probe 40, effectively replacing manual detection, and when the high-voltage loop of the battery module 200 is detected, the manual operation can be away from the high-voltage loop of the battery module 200, and only needs to be controlled by the detection control cabinet 10, so that the manual operation and the high-voltage loop of the battery module 200 can maintain a safe distance, and the electric shock injury to the operator caused by the short circuit abnormality or failure of the high-voltage loop of the battery module 200 can be avoided. The first probe 30 and the second probe 40 can be close to or away from each other, and the use range of the battery short circuit detection device 100 can be improved.

[0039] In addition, by limiting the elastic connection of the first probe 30 and the first carrier 21 and the elastic connection of the second probe 40 and the second carrier 22, the first probe 30 and the second probe 40 are elastically contacted with the detection nodes in the high-voltage loop of the battery module 200 when they contact the detection nodes, and the elastic force can compensate for the unevenness or position deviation of the surface of the detection nodes, improve the adaptability of the battery short circuit detection device 100, ensure that the first probe 30 and the second probe 40 can stably contact the detection nodes, and improve the detection stability; when the first probe 30 and the second probe 40 are separated from the detection nodes, they can be slowly separated from the detection nodes by the elastic force, thereby reducing the risk of high-voltage sparking and avoiding electric shock injury to the operator. In addition, the first probe 30 and the second probe 40 can also buffer the pressure to reduce the scratching of the detection nodes in the high-voltage loop of the battery module 200, protect the appearance of the high-voltage loop of the battery module 200, i.e., reduce the scratching of the first battery module 201 and the second battery module 202, and the elastic force can maintain a constant pressure between the first probe 30, the second probe 40 and the detection nodes, and can cope with the moving or vibrating environment.

[0040] It is apparent for those skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, and the present application can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all aspects as illustrative and not restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and range of equivalents of the claims are intended to be embraced in the present application.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application but not limit the present application, and although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the present application.

Claims

1. A battery short circuit detection device, characterized by comprising: The battery short circuit detection device comprises a detection control cabinet, a power mechanism, a first probe and a second probe. The detection control cabinet is arranged apart from the power mechanism and electrically connected with the power mechanism. The power mechanism comprises a first carrier and a second carrier which can move along a preset track and can approach or move away from each other. The first probe is arranged on the first carrier and elastically connected with the first carrier. The second probe is arranged on the second carrier and elastically connected with the second carrier. The first probe and the second probe are electrically connected with the detection control cabinet.

2. The battery short circuit detection device according to claim 1, wherein: The power mechanism further comprises a first power assembly, a second power assembly and a third power assembly. The second power assembly is connected with the first power assembly. The third power assembly is connected with the second power assembly. The first carrier and the second carrier are connected with the third power assembly. The first power assembly, the second power assembly and the third power assembly cooperatively drive the first carrier and the second carrier to move along the preset track. The third power assembly drives the first carrier and the second carrier to approach or move away from each other.

3. The battery short detection device of claim 2, wherein The third power assembly is a bidirectional screw rod.

4. The battery short detection apparatus of claim 2, wherein The third power assembly comprises a first linear member and a second linear member. The first linear member and the second linear member are connected with the second power assembly. The first linear member and the second linear member are configured to drive in opposite directions. The first carrier is connected with the first linear member. The second carrier is connected with the second linear member.

5. The battery short detection apparatus of claim 1, wherein One of the first probe and the second probe is a positive probe, and the other is a negative probe. The first probe and the second probe are both spring copper probes.

6. The battery short detection apparatus of claim 1, wherein The battery short circuit detection device further comprises a first wire and a second wire. The first wire is electrically connected between the detection control cabinet and the first probe. The second wire is electrically connected between the detection control cabinet and the second probe.

7. The battery short detection apparatus of claim 1, wherein The detection control cabinet comprises a short circuit detector and a host computer. The short circuit detector is electrically connected with the host computer. The first probe and the second probe are electrically connected with the short circuit detector. The host computer is electrically connected with the power mechanism.

8. The battery short detection apparatus of claim 7, wherein The detection control cabinet further comprises a cabinet body. The short circuit detector and the host computer are arranged in the cabinet body.

9. The battery short detection apparatus of claim 8, wherein The detection control cabinet further comprises a first control member and a second control member. The first control member and the second control member are arranged in the cabinet body and electrically connected with the host computer. The first control member and the second control member are respectively used for controlling start-stop and emergency.

10. The battery short detection apparatus of claim 8, wherein The detection control cabinet further comprises a display assembly. The display assembly is arranged in the cabinet body and electrically connected with the host computer.

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