Battery module

Abstract

The utility model provides a battery module which comprises a battery cell, a fixing part and a temperature sensing assembly, the battery cell is provided with a mounting end face, the fixing part is fixed on the mounting end face, the temperature sensing assembly is pressed on the mounting end face by the fixing part, and the temperature sensing assembly is used for sensing the temperature of the battery cell. According to the battery module provided by the invention, unstable contact or non-contact between the temperature sensing assembly and the battery cell can be avoided, so that the detection effect of the temperature sensing assembly is improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery module. Background Art

[0002] In a battery module, in order to monitor the temperature of the battery cell in real time, a temperature sensor is usually installed on the battery cell. In related technologies, the temperature sensor is first fixed to a bracket, and then the bracket is installed on the battery cell so that the temperature sensor can contact the surface of the battery cell to sense the temperature of the battery cell. However, due to assembly errors, vibrations, battery cell deformation, etc., the contact between the temperature sensor and the battery cell is more likely to be unstable or even non-contact, which in turn affects the monitoring of the battery cell temperature. Utility Model Content

[0003] The embodiments of the present application provide a battery module, which can improve the technical problem of unstable or no contact between the temperature sensor on the battery module and the battery cell in the related art.

[0004] An embodiment of the present application provides a battery module, which includes a battery cell, a fixing member and a temperature sensing component, wherein the battery cell has a mounting end surface, the fixing member is fixed on the mounting end surface, the temperature sensing component is pressed against the mounting end surface by the fixing member, and the temperature sensing component is used to sense the temperature of the battery cell.

[0005] Preferably, the temperature sensing component includes a temperature sensor and an elastic thermal pad, the temperature sensor is used to sense the temperature of the battery core, the elastic thermal pad is located between the temperature sensor and the mounting end surface, and the elastic thermal pad is in a compressed state.

[0006] Preferably, the fixing member has a pressing surface for pressing the temperature sensing component, the pressing surface is spaced opposite to the mounting end surface, and the distance between the pressing surface and the mounting end surface is L1; the temperature sensing component has a preset assembly thickness L2 before being pressed and installed, and L2 is greater than L1, so that when the temperature sensing component is installed between the pressing surface and the end surface, the elastic thermal conductive pad is in a compressed state.

[0007] Preferably, the mounting end surface and the elastic thermally conductive pad, the elastic thermally conductive pad and the temperature sensor, and the temperature sensor and the fixing member are respectively connected in a fixed manner or non-connected manner.

[0008] Preferably, the fixing member is provided with a covering portion, the covering portion is recessed with a protective groove, and the protective groove has a notch facing the mounting end surface; the temperature sensing component is located in the protective groove, and the elastic thermal pad extends from the notch and contacts the mounting end surface.

[0009] Preferably, a lead opening is further provided on one side of the vertical surface of the protective groove facing the mounting end surface, so that the temperature collection line can extend from the lead opening into the protective groove and be connected to the temperature sensor.

[0010] Preferably, the temperature sensor comprises a circuit board and a temperature sensing element, the circuit board is arranged in the protective groove, and the temperature sensing element is arranged at an end of the circuit board away from the lead opening.

[0011] Preferably, the temperature sensor further comprises a protective shell, which is located at the mounting portion and is arranged around the temperature sensing element, and one end of the protective shell is fixed on the circuit board, and the other end is fixedly connected to the fixing member.

[0012] Preferably, a pole and a busbar fixed to the pole are further provided on the mounting end surface, and the fixing member is provided with a fixing portion, which is fixedly connected to the busbar, or the fixing portion and the busbar are respectively fixed to the pole.

[0013] Preferably, the fixing portion comprises a fixing plate and a fixing column protruding from the fixing plate, the busbar is provided with a fixing hole, and the fixing column is riveted and fixed in the fixing hole.

[0014] The fixing posts and the fixing holes may be provided in plurality, respectively, the plurality of fixing posts and the plurality of fixing holes are connected in one-to-one correspondence, and at least some of the fixing holes are waist-shaped holes.

[0015] Preferably, the fixing plate is located between the bus bar and the mounting end surface, and the bus bar abuts against the fixing plate, and the fixing plate abuts against the mounting end surface.

[0016] Beneficial effects of this application:

[0017] In the present application, the temperature sensing component is pressed against the mounting end surface of the battery cell by a fixing part, rather than allowing the temperature sensing component and the battery cell to simply contact for heat conduction. This ensures stable thermal contact between the temperature sensing component and the battery cell, thereby avoiding the unstable or no contact between the temperature sensing component on the battery module and the battery cell in the related art, thereby improving the detection effect of the temperature sensing component. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 is a three-dimensional schematic diagram of a battery module provided in an embodiment of the present application;

[0020] Figure 2 yes Figure 1 A magnified view of the structure at center A;

[0021] Figure 3 yes Figure 2 A magnified view of the structure at B in the middle;

[0022] Figure 4 yes Figure 3 A cross-sectional view of the structure at the temperature sensor;

[0023] Figure 5 is a structural cross-sectional view of a battery module of the present application before assembly;

[0024] Figure 6 It is a three-dimensional schematic diagram of an embodiment of a fixing member in a battery module of the present application;

[0025] Figure 7 yes Figure 6 Structural sectional view of the fixing member;

[0026] Figure 8 It is a three-dimensional schematic diagram of an embodiment of a temperature sensor in a battery module of the present application;

[0027] Fig. 9 yes Figure 8 Structural cross-sectional view of the temperature sensor.

[0028] Description of Figure Numbers:

[0029] Label name Label name Label name 100 Battery Module 22 Fixed part 312 Temperature sensing element 10 Battery Cell 221 Fixed plate 313 Protective case 11 Mounting end face 222 Fixed column 32 Elastic thermal pad 12 Pole 30 Temperature sensing component 40 Acquisition Board 20 Fixings 31 Temperature Sensor 41 Temperature acquisition line 21 pars operculum 311 Circuit Board 50 Bus 211 Protective groove 3131 Upper surface 51 Fixing holes 2111 notch 321 Lower end surface 60 Blister bracket 2112 Lead opening 3113 Mounting surface 70 Double-sided tape 2113 Pressing surface 3114 Thermal surface DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, unless otherwise stated, the directional words such as "upper" and "lower" used generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; while "inside" and "outside" refer to the outline of the device.

[0031] The present application provides a battery module 100, which can be used to make a battery pack. The battery pack can be used in electric devices (such as electric vehicles). Figure 4 As shown, the battery module of the present application mainly includes a battery cell 10 , a fixing member 20 and a temperature sensing component 30 .

[0032] Specifically, you can combine Figure 1 and Figure 2 , Figure 1 This is a schematic structural diagram of an embodiment of a battery module of the present application. Figure 2 for Figure 1 In the enlarged view of the structure at A in the figure, the battery module 100 generally includes a plurality of battery cells 10, and the plurality of battery cells 10 are arranged in a matrix of multiple rows and columns, and each battery cell 10 has a pole (not shown), and when the plurality of battery cells 10 and other components (such as a collection board 40, a bus bar 50, a blister bracket 60, etc.) are combined into a battery module 100, the other components are generally installed on the end surface of the battery cell 10 with the pole, so you can refer to Figure 3 or Figure 4 , Figure 3 for Figure 2 The enlarged view of the structure at B in the middle. Figure 4 for Figure 3 In the structural cross-sectional view at the temperature sensor, in this embodiment, the end surface of the battery cell 10 with the pole is defined as the mounting end surface 11 , and the fixing member 20 and the temperature sensing component 30 are both mounted on the mounting end surface 11 of the battery cell 10 .

[0033] The fixing member 20 is fixed on the mounting end surface 11, and there are many specific fixing methods. For example, in one embodiment, please combine Figure 3 and Figure 4 The mounting end surface 11 is provided with a busbar 50, which is an aluminum part and is welded and fixed on the pole of the battery cell 10 to realize current transmission between the battery cells 10. The fixing member 20 is provided with a fixing portion 22, and the fixing portion 22 is fixedly connected to the busbar 50 by riveting, clamping, screwing, bonding, etc. It can be understood that because the busbar 50 is welded and fixed on the pole of the battery cell 10, the busbar 50 and the battery cell 10 are always relatively fixed, and generally no relative movement occurs. Therefore, when the fixing member 20 is fixed on the busbar 50, it can not only ensure that the fixing member 20 and the battery cell 10 remain relatively fixed, but also facilitate the installation of the fixing member 20.

[0034] For another example, in some other embodiments, the fixing member 20 may also be welded together with the busbar 50 and fixed to the pole of the battery cell 10 .

[0035] For another example, the fixing member 20 may be directly fixed to the mounting end surface 11 by adhesive bonding, and specifically may be fixed to the mounting end surface 11 by double-sided adhesive tape, thus avoiding the trouble of applying adhesive and affecting the assembly efficiency.

[0036] It should be noted here that in order to ensure that the fixing part 20 itself is not easily deformed, in this embodiment, the fixing part 20 can be an injection molded part with a certain hardness, or the fixing part 20 can also be a metal part with an insulating layer coated on the surface. Of course, relatively weak positions on the fixing part 20 can also be provided with reinforcing ribs, or the structural thickness can be increased to improve the structural strength of the fixing part 20 itself, and ensure that the fixing part 20 can stably press the temperature sensing component 30 against the mounting end surface 11 of the battery cell 10.

[0037] It should also be noted that, because the fixing member 20 is used to press the temperature sensing component 30 onto the mounting end surface 11, at least part of the surface of the fixing member 20 needs to be spaced apart from the mounting end surface 11 to create a space for mounting the temperature sensing component 30. For example, in this embodiment, please combine Figure 4 and Figure 7 The fixing member 20 is also provided with a covering portion 21, and the covering portion 21 is concavely provided with a protective groove 211. When the fixing member 20 is fixed to the mounting end surface 11, the notch 2111 of the protective groove 211 faces the mounting end surface 11, and the groove bottom of the protective groove 211 constitutes a pressing surface 2113 for pressing the temperature sensing component 30. At this time, the protective groove 211 can be used as a space for installing the temperature sensing component 30. Of course, in other embodiments, the covering portion 21 can also be in a flat plate shape, a block shape, a spherical shape, or other shapes, as long as it can press the temperature sensing component 30, and the specific shape of the covering portion 21 can be flexibly set according to actual needs.

[0038] like Figure 4 As shown, when the battery module 100 of the present application is assembled, the temperature sensing component 30 is pressed against the mounting end face 11 by the fixing part 20, and in the present embodiment, the temperature sensing component 30 includes a temperature sensor 31 and an elastic thermal pad 32. The temperature sensor 31 is used to monitor the temperature of the battery cell 10. The working principle, specific structure, and use method of the temperature sensor 31 itself can refer to the relevant prior art, and no specific limitation is made here, as long as the temperature of the battery cell 10 can be accurately monitored. The elastic thermal pad 32 has both elasticity and thermal conductivity, so the elastic thermal pad 32 can be specifically thermally conductive silica gel, thermally conductive rubber, thermally conductive foam, etc. During assembly, the elastic thermal pad 32 is located between the temperature sensor 31 and the mounting end face 11, and it is necessary to ensure that the elastic thermal pad 32 is in a compressed state.

[0039] In order to ensure that the elastic thermal pad 32 is in a compressed state after the assembly is completed, Figure 5As shown, the fixing member 20 has a pressing surface 2113 facing the mounting end surface 11, and after the fixing member 20 is installed in place, the pressing surface 2113 is spaced apart from the mounting end surface 11, and the distance between the pressing surface 2113 and the mounting end surface is L1. Figure 5 As shown, the temperature sensing component 30 has a preset assembly thickness set to L2 before being pressed and installed. At this time, the elastic thermal pad 32 is in a natural state (i.e., it has not been compressed), and L2 is greater than L1. Specifically, L2 can be 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, etc. larger than L1. In this way, it can be ensured that after the temperature sensing component 30 is assembled to the fixing part 20 and the mounting end face 11, the elastic thermal pad 32 will be in a compressed state.

[0040] Therefore, it can be understood that in the present application, the temperature sensing component 30 is pressed against the mounting end surface 11 of the battery cell 10 by the fixing member 20, and the temperature sensing component 30 includes a temperature sensor 31 and an elastic thermal pad 32, and the elastic thermal pad 32 is compressed between the temperature sensor 31 and the mounting end surface 11 of the battery cell 10. In this way, when there is an assembly error, the error can be compensated by the deformation of the elastic thermal pad 32, or when the distance between the temperature sensor 31 and the battery cell 10 becomes larger due to environmental vibration, deformation of the battery cell 10, etc., the elastic thermal pad 32 can be deformed to adapt to the larger distance, ensuring that the temperature sensor 31 and the battery cell 10 maintain stable thermal contact, thereby improving the technical problem of unstable or no contact between the temperature sensor 31 on the battery module 100 and the battery cell 10 in the related art.

[0041] It should be noted here that for the measurement method of L2, such as Figure 5 As shown, in the thickness direction of the elastic thermal pad 32, the temperature sensing component 30 has an upper end surface 3131 for abutting against the pressing surface 2113, and a lower end surface 321 for abutting against the mounting end surface 11. Figure 5 In the structural scheme shown, the upper end surface 3131 is formed by the end surface of the protective shell 313 on one side away from the elastic thermal pad 32, and the lower end surface 321 is formed by the surface of the elastic thermal pad 32 on one side away from the protective shell 313. In the thickness direction of the elastic thermal pad 32, the distance between the upper end surface 3131 and the lower end surface 321 is L2.

[0042] It should also be noted that the mounting end surface 11 and the elastic thermal pad 32 , the elastic thermal pad 32 and the temperature sensor 31 , and the temperature sensor 31 and the fixing member 20 are either fixedly connected or non-connectedly attached.

[0043] That is to say, the mounting end surface 11 and the elastic thermal pad 32, the elastic thermal pad 32 and the temperature sensor 31, and the temperature sensor 31 and the fixing part 20 can be either fixedly connected (such as bonding) or non-connected, and the specific installation method can be flexibly selected according to actual needs.

[0044] For example, optionally, in one embodiment, there is a connectionless fit between the mounting end surface 11 and the elastic thermal pad 32 , between the elastic thermal pad 32 and the temperature sensor 31 , and between the temperature sensor 31 and the fixing member 20 .

[0045] Alternatively, in another embodiment, the elastic thermal pad 32 is fixed on the mounting end surface 11 , and the elastic thermal pad 32 and the temperature sensor 31 , as well as the temperature sensor 31 and the fixing member 20 are all non-connectedly attached.

[0046] Alternatively, in another embodiment, the elastic thermal pad 32 and the temperature sensor 31 are fixedly connected, and the mounting end surface 11 and the elastic thermal pad 32 , as well as the temperature sensor 31 and the fixing member 20 are all non-connectedly fitted.

[0047] Alternatively, in another embodiment, the temperature sensor 31 is fixedly connected to the fixing member 20 , and the mounting end surface 11 and the elastic thermal pad 32 , as well as the elastic thermal pad 32 and the temperature sensor 31 are all non-connectedly fitted.

[0048] Alternatively, in another embodiment, the mounting end surface 11 and the elastic thermal pad 32 , the elastic thermal pad 32 and the temperature sensor 31 , and the temperature sensor 31 and the fixing member 20 are all fixedly connected.

[0049] Alternatively, in another embodiment, the mounting end surface 11 and the elastic thermal pad 32 , as well as the elastic thermal pad 32 and the temperature sensor 31 are fixedly connected, and the temperature sensor 31 and the fixing member 20 are non-connectedly fitted.

[0050] Alternatively, in another embodiment, the mounting end surface 11 and the elastic thermal pad 32 , as well as the temperature sensor 31 and the fixing member 20 are all fixedly connected, and the elastic thermal pad 32 and the temperature sensor 31 are non-connectedly fitted.

[0051] Alternatively, in another embodiment, the elastic thermal pad 32 and the temperature sensor 31 , as well as the temperature sensor 31 and the fixing member 20 are fixedly connected, and the mounting end surface 11 and the elastic thermal pad 32 are non-connectedly fitted.

[0052] It should be noted that the "fixed connection" defined in this embodiment means that two components are connected to each other and relatively fixed, such as the temperature sensor 31 and the fixing member 20 are fixed by double-sided adhesive 70. The "non-connection bonding" defined means that two components are bonded to each other but not connected, and the temperature sensor 31 is only pressed against the elastic thermal pad 32 by the fixing member 20, and there is no connection between the temperature sensor 31 and the fixing member 20.

[0053] Therefore, during assembly, there are multiple ways to install the temperature sensing component 30 and the fixing part 20 on the mounting end surface 11. For example, the fixing part 20 can be first fixed on the mounting end surface 11, and then the temperature sensing component 30 can be inserted between the fixing part 20 and the mounting end surface 11. Alternatively, the temperature sensing component 30 can be naturally placed or fixed on the mounting end surface 11 first, and then the fixing part 20 can be fixed to the mounting end surface 11, and the fixing part 20 can press the temperature sensing component 30 during the fixing process to cause the elastic thermal pad 32 to undergo elastic deformation. Alternatively, the elastic thermal pad 32 in the temperature sensing component 30 can be naturally placed or fixed on the mounting end surface 11 first, and then the temperature sensor 31 in the temperature sensing component 30 can be fixed on the fixing part 20, and the temperature sensor 31 can be installed together with the fixing part 20 to press the elastic thermal pad 32. Alternatively, the entire temperature sensing component 30 is fixed on the fixing member 20. During installation, the entire temperature sensing component 30 is installed together with the fixing member 20, and the elastic thermal pad 32 is located between the temperature sensor 31 and the mounting end surface 11. In short, the specific installation method can be flexibly selected according to needs.

[0054] Optionally, in one embodiment, the elastic thermal pad 32 is fixed on the temperature sensor 31, specifically, as Figure 8 or Fig. 9 As shown, the temperature sensor 31 mainly includes a circuit board 311 and a temperature sensing element 312. The circuit board 311 has a mounting surface 3113 and a heat conducting surface 3114 relative to each other. Figure 4 During assembly, the mounting surface 3113 faces away from the mounting end surface 11, the temperature sensing element 312 is mounted on the mounting surface 3113, the heat conducting surface 3114 faces the mounting end surface 11, and the elastic heat conducting pad 32 can be fixed to the heat conducting surface 3114 by double-sided adhesive. It can be understood that such a configuration can avoid the situation where the elastic heat conducting pad 32 and the temperature sensor 31 are relatively displaced during installation or use, and ensure that there is always enough heat conducting area between the temperature sensor 31 and the elastic heat conducting pad 32, thereby ensuring the timeliness and accuracy of temperature monitoring.

[0055] Furthermore, the temperature sensor 31 is also fixed on the fixing part 20, that is, the entire temperature sensing component 30 is fixed on the fixing part 20, so that the temperature sensing component 30 can be installed on the mounting end surface 11 together with the fixing part 20, and there is no need to install the temperature sensing component 30 and the fixing part 20 separately, which can improve assembly efficiency and reduce production costs.

[0056] Optionally, in one embodiment, as Figure 7 As shown, the fixing member 20 is provided with a covering portion 21, the covering portion 21 is connected to one side of the fixing portion 22, and the covering portion 21 is concavely provided with a protective groove 211, and the protective groove 211 has a notch 2111 facing the mounting end surface 11. Figure 4 , the temperature sensing component 30 is located in the protective groove 211, and the elastic thermal pad 32 in the temperature sensing component 30 extends from the notch 2111 and contacts the mounting end surface 11. It can be understood that after the temperature sensing component 30 is arranged in the protective groove 211, the covering part 21 can be used to protect the temperature sensing component 30, so as to prevent the temperature sensing component 30 from being bumped, wetted, etc., and ensure the working stability of the temperature sensing component 30.

[0057] Further, please combine Figure 3 and Figure 4 , a lead opening 2112 is also provided on the side of the protective groove 211 facing the vertical surface of the mounting end surface 11, and the temperature collection line 41 extends from the lead opening 2112 into the protective groove 211 and is connected to the temperature sensor 31. Specifically, the battery module 100 is generally provided with a collection board 40, which is used to collect information such as voltage, current, temperature, etc. of the battery cell 10, so that the battery management system can perform corresponding protection control according to the battery cell 10, such as battery balancing, overcharge, over-discharge protection, etc. Among them, the collection board 40 is connected to the temperature sensor 31 through the temperature collection line 41, and because the temperature sensor 31 in this embodiment is located in the protective groove 211 of the cover 21, in order to ensure that the temperature collection line 41 can be connected to the temperature sensor 31, in this embodiment, the protective groove 211 is also provided with a lead opening 2112, and the lead opening 2112 faces the side where the collection board 40 is located, so that it is convenient for the temperature collection line 41 to extend into the protective groove 211 and be electrically connected to the temperature sensor 31.

[0058] Further, please combine Figure 4 and Fig. 9The temperature sensor 31 includes a circuit board 311 and a temperature sensing element 312. The circuit board 311 is arranged in the protective groove 211, and the temperature sensing element 312 is arranged at one end of the circuit board 311 away from the lead opening 2112. That is, during assembly, the position on the circuit board 311 for connecting the temperature collection line 41 is closer to the lead opening 2112 than the temperature sensing element 312. In this way, the temperature sensing element 312 can be prevented from obstructing the temperature collection line 41 from extending into the protective groove 211, thereby not only facilitating the connection between the temperature collection line 41 and the wiring portion 3112, but also shortening the extension length of the temperature collection line 41, avoiding the problem of serious signal interference caused by the temperature collection line 41 extending too long, and ensuring accurate collection of temperature signals.

[0059] Further, please combine Figure 4 and Figure 8 The temperature sensor 31 also includes a protective shell 313, which is located on the mounting portion 3111 and surrounds the temperature sensing element 312, so that the temperature sensing element 312 can be protected, and one end of the protective shell 313 is fixed on the circuit board 311, and the other end is fixedly connected to the fixing member 20. Specifically, the protective shell 313 in this embodiment is a plastic part, one end of which can be fixed on the circuit board 311 by bonding, hot melt welding, ultrasonic welding, etc., and the other end can also be fixed on the fixing member 20 by bonding, hot melt welding, ultrasonic welding, etc. It can be understood that in order to protect the temperature sensing element 312 while achieving a fixed connection between the temperature sensor 31 and the fixing member 20, this embodiment is to set a protective shell 313 on the circuit board 311 instead of setting a large housing that can install the circuit board 311 and the temperature sensing element 312, so that the volume of the temperature sensor 31 can be smaller, and the temperature sensor 31 can be prevented from occupying a large installation space, thereby ensuring that the structure of the battery assembly is more compact and lightweight.

[0060] In one embodiment, if Figure 3 and Figure 6 As shown, the fixing portion 22 includes a fixing plate 221 and a fixing column 222 protruding from the fixing plate 221. The busbar 50 is provided with a fixing hole 51, and the fixing column 222 is riveted or welded to the fixing hole 51. It can be understood that when the fixing member 20 is fixed to the busbar 50 by riveting or welding, it can not only ensure the installation stability of the fixing member 20, but also facilitate assembly and ensure assembly efficiency.

[0061] Furthermore, there can be multiple fixing posts 222 and fixing holes 51, for example, there can be two, three, four, five, etc. fixing posts 222 and fixing holes 51, so that the fixing member 20 can be fixed on the bus 50 through multiple fixing points, making it less likely for the fixing member 20 to shake relative to the battery cell 10.

[0062] Optionally, in one embodiment, reference may be made to Figure 3 There can be two fixing columns 222 and two fixing holes 51 respectively, both of which are cylindrical. Among the two fixing holes 51, at least one fixing hole 51 is a waist-shaped hole, and the length of the waist-shaped hole is greater than the outer diameter of the fixing column 222. This can avoid the problem that the two fixing columns 222 cannot be simultaneously inserted into the two fixing holes 51 due to processing errors, thereby ensuring that the fixing component 20 can be smoothly installed on the bus 50.

[0063] Optionally, in one embodiment, as Figure 4 As shown, the fixing plate 221 is located between the bus 50 and the mounting end surface 11, and the bus 50 abuts against the fixing plate 221, and the fixing plate 221 abuts against the mounting end surface 11, that is, the fixing plate 221 is clamped between the bus 50 and the mounting end surface 11, which can further prevent the fixing plate 221 from shaking, thereby better ensuring the installation stability of the fixing member 20.

[0064] The embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A battery module, characterized in that: include: A battery cell, wherein the battery cell has a mounting end surface; A fixing member, the fixing member being fixed on the mounting end surface; as well as, A temperature sensing component is pressed against the mounting end surface by the fixing member, and is used to sense the temperature of the battery core.

2. The battery module according to claim 1, characterized in that: The temperature sensing component includes a temperature sensor and an elastic thermal pad. The temperature sensor is used to sense the temperature of the battery core. The elastic thermal pad is located between the temperature sensor and the mounting end surface, and the elastic thermal pad is in a compressed state.

3. The battery module according to claim 2, characterized in that: The fixing member has a pressing surface for pressing the temperature sensing component, the pressing surface is spaced opposite to the mounting end surface, and the distance between the pressing surface and the mounting end surface is L1; The temperature sensing component has a preset assembly thickness L2 before being pressed and installed, and L2 is greater than L1, so that when the temperature sensing component is installed between the pressing surface and the installation end surface, the elastic thermal pad is in a compressed state.

4. The battery module according to claim 2, characterized in that: The mounting end surface and the elastic thermal pad, the elastic thermal pad and the temperature sensor, and the temperature sensor and the fixing member are respectively connected in a fixed manner or non-connected manner.

5. The battery module according to any one of claims 2 to 4, characterized in that: The fixing member is provided with a covering portion, the covering portion is concavely provided with a protective groove, and the protective groove has a notch facing the mounting end surface; the temperature sensing component is located in the protective groove, and the elastic thermal pad extends from the notch and contacts the mounting end surface.

6. The battery module according to claim 5, characterized in that: A lead opening is also provided on one side of the vertical surface of the protection groove facing the mounting end surface, and the temperature collection line extends from the lead opening into the protection groove and is connected to the temperature sensor.

7. The battery module according to claim 6, characterized in that: The temperature sensor comprises a circuit board and a temperature sensing element. The circuit board is arranged in the protection groove, and the temperature sensing element is arranged at an end of the circuit board away from the lead opening.

8. The battery module according to claim 7, characterized in that: The temperature sensor further comprises a protective shell, which is arranged around the temperature sensing element, and one end of the protective shell is fixed on the circuit board, and the other end of the protective shell is fixedly connected to the fixing member.

9. The battery module according to any one of claims 1 to 4, characterized in that: The mounting end surface is also provided with a pole and a busbar fixed on the pole, the fixing member is provided with a fixing portion, the fixing portion is fixedly connected to the busbar, or the fixing portion and the busbar are respectively fixed on the pole.

10. The battery module according to claim 9, characterized in that: The fixing part comprises a fixing plate and a fixing column protruding from the fixing plate. The busbar is provided with a fixing hole, and the fixing column is fixed in the fixing hole.

11. The battery module according to claim 10, characterized in that: There are a plurality of the fixing posts and a plurality of the fixing holes, respectively. The plurality of the fixing posts and the plurality of the fixing holes are connected in a one-to-one correspondence, and at least some of the fixing holes are waist-shaped holes.

12. The battery module according to claim 10, characterized in that: The fixing plate is located between the bus bar and the mounting end surface, and the bus bar abuts against the fixing plate, and the fixing plate abuts against the mounting end surface.

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