Battery module thermocouple fixing device and system
By designing the thermocouple fixing device of the battery module, the combination of clamps and locking parts is used to solve the problem of thermocouple falling off when the battery module expands or bulges, and the reliability of battery temperature acquisition is improved.
Patent Information
- Application Number
- CN202421154359.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-24
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-05-24
AI Technical Summary
In the prior art, when the battery module is expanded or bulged, the thermocouple may contact the surface of the battery module without any contact or fall off in advance, resulting in the inability to effectively detect the thermal runaway characteristic temperature and data curve distortion of the battery module.
A battery module thermocouple fixing device is designed, including a locking member and two clamping members. The clamping member is arranged at intervals. The clamping surface can abut the outside of the thermocouple. The clamping member spacing is adjusted through the locking clamping clamp to ensure thermoelectricity. Even close to the surface of the battery module.
The device can reduce the possibility of thermocouple falling off when the battery module expands or bulges, improve the reliability of battery temperature acquisition, and the device can be reused and safe and environmentally friendly.
Smart Images
Figure CN222505632U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of battery testing, in particular to a battery module thermocouple fixing device and system. Background Art
[0002] The battery module has multiple cells. When performing overcharge or heat spread tests, multiple thermocouples are attached to the side positions of the battery module surface corresponding to different cells, and then fixed with insulating tape. However, when the cell experiences thermal runaway, it will expand or bulge, which may cause poor contact between the thermocouple and the battery module surface, or even premature detachment, which in turn causes abnormal phenomena such as inability to effectively detect the thermal runaway characteristic temperature of the battery module, distortion of the data curve, and premature termination of the experiment. Utility Model Content
[0003] The purpose of the invention of the utility model is to provide a battery module thermocouple fixing device and system to address the technical problem in the prior art that when the battery cell expands or bulges, the thermocouple may have poor contact with the surface of the battery module or even fall off prematurely, thus affecting the testing of the battery module.
[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0005] In a first aspect, a battery module thermocouple fixing device is provided, comprising a locking member and two clamping members;
[0006] The two clamping members are spaced apart, and the two clamping members have clamping surfaces on the sides facing each other;
[0007] The locking member comprises a sliding rod and a locking hoop, the two clamping members are slidably arranged on the sliding rod, and the locking hoop is connected to the sliding rod and can abut against the outer side of the clamping member;
[0008] When the two clamping members are close to each other, the clamping surfaces of the two clamping members can respectively abut against the outer sides of several thermocouples on the corresponding sides of the battery module.
[0009] As an optional solution of the present invention, the clamping surface is a plane.
[0010] As an optional solution of the present invention, the clamping member is a long strip-shaped plate-like structure, and a side plate surface of the clamping member constitutes the clamping surface.
[0011] As an optional solution of the present invention, the clamping member is made of mica sheet.
[0012] As an optional solution of the present invention, the thickness of the clamping member is greater than or equal to 5 mm.
[0013] As an optional solution of the present invention, there are two locking members, which are respectively arranged at two ends of the clamping member, and the two locking members can respectively adjust the distance between the corresponding ends of the two clamping members.
[0014] As an optional solution of the utility model, the sliding rod is a bolt, the locking hoop is a nut, and the screw rod is threadedly connected to the nut;
[0015] Both ends of the clamping member are provided with through holes, and the bolt passes through the through holes at the corresponding ends of the two clamping members and is locked by the nut.
[0016] As an optional solution of the present invention, the through hole is an elliptical hole.
[0017] In a second aspect, a battery module thermocouple fixing system is provided, comprising a battery module, a plurality of thermocouples and a battery module thermocouple fixing device as described in any of the above schemes, wherein the plurality of thermocouples are divided into two groups, the two groups of thermocouples are respectively attached to two sides of the battery module, and each group of thermocouples are collinearly distributed;
[0018] The two clamping members are distributed on both sides of the battery module, and the clamping surfaces of the clamping members respectively abut against the outer sides of all the thermocouples on the corresponding sides of the battery module.
[0019] As an optional solution of the present invention, the outer surface of the thermocouple abuts against the middle part of the clamping surface along the width direction, and the distance between the edge of the outer surface of the thermocouple and the edge of the clamping surface is greater than or equal to 5 mm.
[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:
[0021] 1. The utility model provides a battery module thermocouple fixing device, which can adjust the distance between the two clamps, so that the two clamps are close to each other to abut the outer sides of the thermocouples on the corresponding sides of the battery module, and the two clamps are locked by a locking hoop, thereby prompting the two clamps to clamp multiple thermocouples, and then prompting multiple thermocouples to closely abut the surface of the battery module, reducing the possibility of poor contact or falling off between the thermocouple and the battery surface due to expansion and bulging of the battery module, and improving the reliability of battery temperature collection. In addition, the device is reusable, safe and environmentally friendly.
[0022] 2. The utility model provides a battery module thermocouple fixing system, which presses the thermocouple against the surface of the battery module through the battery module thermocouple fixing device, thereby reducing the possibility of poor contact or falling off between the thermocouple and the battery surface due to expansion or bulging of the battery module, thereby improving the reliability of battery temperature collection. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is an overall schematic diagram of Example 1 of the utility model.
[0024] Figure 2 It is an overall schematic diagram of Example 2 of the utility model.
[0025] Figure 3 It is a side schematic diagram of embodiment 2 of the utility model.
[0026] Figure 4 It is a forward schematic diagram of Embodiment 2 of the present utility model.
[0027] Figure 5 It is a top view schematic diagram of embodiment 2 of the utility model.
[0028] Markings in the figure: 1-clamping piece; 11-clamping surface; 12-through hole; 2-locking piece; 21-bolt; 22-nut; 3-battery module; 4-thermocouple. DETAILED DESCRIPTION
[0029] The utility model is described in detail below in conjunction with the accompanying drawings.
[0030] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0031] In the present utility model, the terms "horizontal", "vertical", "overhanging", "parallel"... and the like do not mean that the corresponding devices / components / elements are absolutely horizontal or vertical or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simply understood that the corresponding devices / components / elements are set in specific directions such as "horizontal", "vertical", "overhanging", "parallel"..., and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, and more preferably an error / deviation within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the scheme of the present utility model.
[0032] In the description of the embodiments, "several", "plurality" and "multiple" represent at least 2. It can be any number such as 2, 3, 4, 5, 6, 7, 8, 9, etc., and can even be more than 9.
[0033] In addition, in the description of the technical solution of the present invention, unless otherwise clearly specified / defined / restricted, the terms "set", "install", "connect", "connected", "provided with", "laid", and "arranged" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, and can be welding, riveting, bolting, threading, and other commonly used connection means in the field. This connection can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal connection of two elements.
[0034] Example 1
[0035] A battery module thermocouple fixing device, such as Figure 1 As shown, it includes a locking member 2 and two clamping members 1, the two clamping members 1 are arranged at intervals, and the two clamping members 1 have a clamping surface 11 on the side facing each other, and the clamping surfaces 11 of the two clamping members 1 are parallel to each other; the locking member 2 includes a sliding rod and a locking hoop, wherein the two clamping members 1 are slidably arranged on the sliding rod, and the distance between the two clamping members 1 can be adjusted by sliding the two clamping members 1, and the locking hoop is connected to the sliding rod and can stay on the surface of the rod body at any axial position of the sliding rod, and then can abut the outer side of the clamping member 1, thereby adjusting the distance between the two clamping members 1.
[0036] When the battery module 3 is overcharged or subjected to heat spread test, several thermocouples 4 are attached to the side of the battery module 3, and then the battery module 3 with the thermocouples 4 is placed between two clamps 1, and the spacing between the two clamps 1 is reduced by the locking member 2. When the two clamps 1 are close to each other to a distance that matches the width of the battery module 3, the clamping surfaces 11 of the two clamps 1 can respectively abut against the outer sides of the thermocouples 4 on the corresponding sides of the battery module 3, thereby causing several thermocouples 4 to be closely against the surface of the battery module 3, reducing the possibility of poor contact or falling off between the thermocouples 4 and the battery surface due to expansion and bulging of the battery module 3, and improving the reliability of battery temperature collection. Moreover, the device is reusable, safe and environmentally friendly.
[0037] Among them, as long as the clamping surface 11 can simultaneously abut against the outside of several thermocouples 4 on one side of the battery module 3, the possibility of poor contact between the thermocouple 4 and the battery surface or falling off can be reduced. Based on this, the clamping surface 11 only needs to be adapted to the outside of the thermocouple 4 on one side of the battery module 3. Considering that the multiple thermocouples 4 on one side of the battery module 3 are usually arranged in a straight line during testing, the clamping member 1 can be a long strip structure, and the outsides of the multiple thermocouples 4 are almost in the same plane. Therefore, the clamping surface 11 can be a plane, which plays a role in facilitating processing while being able to abut against multiple thermocouples 4. In summary, the clamping member 1 can be a long strip plate-like structure, and one side plate surface of the clamping member 1 constitutes the clamping surface 11.
[0038] More specifically, the material of the clamping member 1 can be a high-temperature resistant mica sheet material, which can effectively ensure insulation, high temperature resistance, high flame retardancy, and easy processing and use.
[0039] More specifically, when the clamping member 1 is made of mica sheet material, the thickness of the clamping member 1 can be greater than or equal to 5 mm, thereby ensuring that the clamping member 1 has sufficient rigidity, thereby improving the clamping strength that the clamping member 1 can apply to the thermocouple 4, and ensuring the stability and tightness of the clamping member 1 clamping the thermocouple 4.
[0040] It is understandable that the material of the clamping member 1 can also be a metal material with relatively high hardness. In this case, as long as the clamping member 1 can ensure the stability and tightness of the thermocouple 4, the thickness of the clamping member 1 can also be less than 5 mm.
[0041] The number of the locking members 2 can be one or more, and preferably the number of the locking members 2 is two.
[0042] In one or more embodiments, there are two locking members 2, which are respectively disposed at both ends of the clamping member 1, and when the battery module 3 is between the two clamping surfaces 11, the two locking members 2 are respectively located on both sides of the battery module 3. The locking members 2 can respectively adjust the distance between the corresponding ends of the two clamping members 1, thereby further improving the stability and tightness of the clamping member 1 clamping the thermocouple 4 through the adjustment of the distance between the two ends of the clamping member 1 by the locking members 2.
[0043] The locking member may be a smooth rod body of the sliding rod, and the locking hoop may be a clamp that can be clamped and fixed on the sliding rod, or the sliding rod may be a screw rod, and the locking hoop may be a nut that cooperates with the screw rod.
[0044] In one or more embodiments, for the locking member 2, the sliding rod is a bolt 21, the locking hoop is a nut 22, and the bolt 21 is threadedly connected to the nut 22; at this time, both ends of the clamping member 1 have through holes 12, and the bolts 21 installed at the corresponding ends of the clamping member 1 pass through the through holes 12 at the corresponding ends of the two clamping members 1. At this time, the corresponding ends of the two clamping members 1 are located between the heads of the bolts 21 and the nut 22. By tightening the nut 22, the heads of the bolts 21 and the nut 22 can push the corresponding ends of the two clamping members 1 closer to each other until the two clamping members 1 can abut against all the thermocouples 4 on the corresponding sides of the battery module 3 to achieve locking.
[0045] Considering that there may be errors in the intervals between the through holes 12 during the processing of the clamp 1, the shape of the through holes 12 is preferably an elliptical hole to accommodate the errors.
[0046] Example 2
[0047] A battery module thermocouple fixing system, such as Figures 2 to 5 As shown, it includes a battery module 3, a plurality of thermocouples 4 and any one of the battery module thermocouple fixing devices mentioned in Example 1. The plurality of thermocouples 4 are divided into two groups, the two groups of thermocouples 4 are respectively attached to the two sides of the battery module 3, and each group of thermocouples 4 are collinearly distributed; the two clamping members 1 are distributed on the two sides of the battery module 3, and the clamping surfaces 11 of the clamping members 1 are respectively against the outer sides of the thermocouples 4 on the corresponding sides of the battery module 3.
[0048] All thermocouples 4 are pressed against the surface of the battery module 3 by the battery module thermocouple fixing device, reducing the possibility of poor contact or falling off between the thermocouples 4 and the battery surface due to expansion or bulging of the battery module 3, thereby improving the reliability of battery temperature collection.
[0049] Among them, the outer surface of the thermocouple 4 abuts against the middle part of the clamping surface 11 along the width direction, and the distance between the edge of the outer surface of the thermocouple 4 and the edge of the clamping surface 11 is greater than or equal to 5 mm, thereby improving the stability of the clamping surface 11 clamping the thermocouple 4 and reducing the possibility of the position of the thermocouple 4 changing when the battery module 3 expands or bulges, and finally escaping from the edge of the clamping surface 11.
[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A battery module thermocouple fixing device, characterized in that: It comprises a locking member (2) and two clamping members (1); The two clamping members (1) are arranged at an interval, and the two clamping members (1) have clamping surfaces (11) on the sides facing each other; The locking member (2) comprises a sliding rod and a locking hoop, the two clamping members (1) are slidably arranged on the sliding rod, and the locking hoop is connected to the sliding rod and can abut against the outer side of the clamping member (1); When the two clamping members (1) are brought close to each other, the clamping surfaces (11) of the two clamping members (1) can respectively abut against the outer sides of a plurality of thermocouples (4) on the corresponding sides of the battery module (3).
2. A battery module thermocouple fixing device according to claim 1, characterized in that: The clamping surface (11) is a plane.
3. A battery module thermocouple fixing device according to claim 2, characterized in that: The clamping member (1) is a long strip-shaped plate-like structure, and a side plate surface of the clamping member (1) constitutes the clamping surface (11).
4. A battery module thermocouple fixing device according to any one of claims 1-3, characterized in that: The material of the clamping piece (1) is mica sheet.
5. A battery module thermocouple fixing device according to any one of claims 1-3, characterized in that: The thickness of the clamping member (1) is greater than or equal to 5 mm.
6. A battery module thermocouple fixing device according to any one of claims 1-3, characterized in that: The number of the locking members (2) is two, and the two locking members (2) are respectively arranged at two ends of the clamping member (1).
7. A battery module thermocouple fixing device according to claim 6, characterized in that: The slide rod is a bolt (21), the locking hoop is a nut (22), and the bolt (21) and the nut (22) are threadedly connected; The two ends of the clamping member (1) are provided with through holes (12), and the bolt (21) passes through the through holes (12) at the corresponding ends of the two clamping members (1) and is locked by the nut (22).
8. A battery module thermocouple fixing device according to claim 7, characterized in that: The through hole (12) is an elliptical hole.
9. A battery module thermocouple fixing system, characterized in that: Comprising a battery module (3), a plurality of thermocouples (4) and a battery module thermocouple fixing device as claimed in any one of claims 1 to 8, wherein the plurality of thermocouples (4) are divided into two groups, the two groups of thermocouples (4) are respectively attached to two sides of the battery module (3), and each group of thermocouples (4) are collinearly distributed; The two clamping members (1) are distributed on both sides of the battery module (3), and the clamping surfaces (11) of the clamping members (1) respectively abut against the outer sides of the thermocouples (4) on the corresponding sides of the battery module (3).
10. A battery module thermocouple fixing system according to claim 9, characterized in that: The outer surface of the thermocouple (4) abuts against the middle portion of the clamping surface (11) along the width direction, and the distance between the edge of the outer surface of the thermocouple (4) and the edge of the clamping surface (11) is greater than or equal to 5 mm.