Battery pack and electric equipment

Abstract

The utility model provides a battery pack and electric equipment, the battery pack comprises a battery cell module and a limiting bracket, the battery cell module comprises a battery cell and a connecting bar connected with an output electrode of the battery cell; the limiting bracket is arranged on the battery cell, and the limiting bracket is fixedly connected with the connecting bar; wherein a limiting clamping groove is formed in the surface of the side, facing the battery cell, of the limiting support, at least one end, provided with the temperature sensing head, of the temperature sensor is clamped in the limiting clamping groove, and the limiting clamping groove is filled with temperature sensing glue, so that at least the temperature sensing head is connected with the battery cell through the temperature sensing glue. According to the utility model, the problem that the temperature of the temperature sensor fails due to the deformation of the battery cell because the temperature sensor is directly adhered to the battery cell of the battery pack through the temperature sensing adhesive in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, and in particular to a battery pack and an electrical device. Background Art

[0002] As a core component of electric vehicles, the safety of the battery pack is directly related to the safety of the vehicle. The battery pack temperature control strategy is a key component of battery pack safety design, and thermal performance testing of the battery pack and its connectors is the foundation for designing the battery pack temperature control strategy. Battery pack thermal performance testing primarily includes thermal flow testing and thermal resistance testing. The thermal flow test is primarily used to determine the heat dissipation capacity of the battery pack, while the thermal resistance test is primarily used to determine the thermal stability of the battery pack.

[0003] In the thermal resistance test of the battery pack, the installation of the temperature sensor is a key link. The temperature sensor is a temperature sensor that measures the temperature of the battery cell in the battery pack thermal resistance test. The temperature sensor is installed in the battery pack and is fitted with the battery cell.

[0004] In the prior art, the temperature sensor is adhered and fixed to the battery cell of the battery pack by means of thermal adhesive. In this way, at the end of the life of the battery pack, as the battery cell expands, the thermal adhesive is easily pulled or even torn, causing the temperature sensor to be forced to separate from the battery cell. Alternatively, during the charge and discharge process of the battery pack, the expansion and contraction of the battery cell can easily cause the temperature sensor to be forced to separate from the battery cell. These phenomena will cause the temperature collection of the temperature sensor to fail, and the reliability of the temperature collection by the temperature sensor cannot be ensured. Utility Model Content

[0005] The main purpose of the present utility model is to provide a battery pack and an electrical device to solve the problem in the prior art that the temperature sensor is directly bonded to the battery cell of the battery pack through temperature-sensitive adhesive, resulting in failure of the temperature sensor to detect temperature due to deformation of the battery cell.

[0006] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a battery pack is provided, including a battery cell module and a limit bracket, the battery cell module including a battery cell and a connecting bar connected to the output electrode of the battery cell; the limit bracket is arranged on the battery cell, and the limit bracket is fixedly connected to the connecting bar; wherein, the surface of the limit bracket facing the battery cell has a limit slot, the limit slot at least clamps one end of the temperature sensor having a temperature sensing head, and the limit slot is filled with temperature sensing glue, so that at least the temperature sensing head is connected to the battery cell through the temperature sensing glue.

[0007] In an exemplary embodiment, the limiting bracket includes a limiting plate body, a portion of the surface of the limiting plate body facing the battery core is recessed to form a limiting slot, the limiting slot passes through the limiting plate body, and an exhaust hole is provided on the bottom surface of the limiting slot.

[0008] In an exemplary embodiment, there are multiple exhaust holes, and the multiple exhaust holes are arranged at intervals along the extending direction of the limiting slot.

[0009] In an exemplary embodiment, at least the limiting slot limits the temperature sensor head so that the temperature sensor head is in direct contact with the metal area of the battery cell.

[0010] In an exemplary embodiment, the limiting bracket also includes a positioning column, which is protrudingly arranged on the surface of the limiting plate body away from the battery cell. A positioning hole is opened at the position where the connecting row is opposite to the positioning column. The positioning column passes through the positioning hole and is thermally riveted to the connecting row; the positioning column includes two, and the two positioning columns are respectively protruding at both ends of the limiting plate body. The two connecting rows have positioning holes, and the two positioning columns correspond one to one to the two positioning holes.

[0011] In an exemplary embodiment, the limiting plate body and the positioning column are integrally formed.

[0012] In an exemplary embodiment, the limiting plate body is in a parallelogram shape, and two diagonal positions of the limiting plate body are respectively connected to the two connecting rows.

[0013] In an exemplary embodiment, an explosion-proof valve is provided on the battery cell, and the explosion-proof valve is located between two connecting rows. An avoidance hole is opened at a position where the limiting bracket is opposite to the explosion-proof valve.

[0014] In an exemplary embodiment, the shape of the avoidance hole is adapted to the shape of the installation area of the explosion-proof valve.

[0015] In an exemplary embodiment, in the extension direction of the limit slot, the limit slot includes a first limit slot section, a transition slot section, and a second limit slot section that are connected in sequence; wherein the slot width of the first limit slot section and the slot width of the second limit slot section are both smaller than the slot width of the transition slot section, at least one of the first limit slot section and the second limit slot section is engaged with the temperature sensor, and an exhaust hole is provided on the bottom surface of the transition slot section.

[0016] In an exemplary embodiment, the notch of the first limiting groove section is configured in a constricted shape to limit the temperature sensor within the first limiting groove section; and / or, the notch of the second limiting groove section is configured in a constricted shape to limit the temperature sensor within the second limiting groove section.

[0017] According to another aspect of the present invention, an electrical device is provided, including a battery pack, which is the battery pack described above.

[0018] Applying the technical solution of the utility model, a battery pack is provided, including a battery cell module and a limit bracket, the battery cell module including a battery cell and a connecting bar connected to the output electrode of the battery cell; the limit bracket is arranged on the battery cell, and the limit bracket is fixedly connected to the connecting bar; wherein, the surface of the limit bracket facing the battery cell has a limit slot, the limit slot at least clamps one end of the temperature sensor having a temperature sensing head, and the limit slot is filled with temperature sensitive glue, so that at least the temperature sensing head is connected to the battery cell through the temperature sensitive glue.

[0019] In the present application, the limit bracket is fixedly connected to the connecting row. When the battery cell is displaced due to expansion, the limit bracket can remain relatively stationary with the battery cell. In addition, a limit slot is provided on the surface of the limit bracket facing the battery cell. The limit slot is at least used to clamp one end of the temperature sensor having a temperature sensing head, and the limit slot is filled with temperature sensing glue so that at least the temperature sensing head is connected to the battery cell through the temperature sensing glue. The setting of the limit slot has the effect of limiting the end of the temperature sensor having the temperature sensing head. At the same time, it can also protect the temperature sensing glue, ensuring that the temperature sensor is always connected to the battery cell through the temperature sensing glue, thereby ensuring the temperature sampling reliability of the temperature sensor and ensuring the temperature sampling accuracy of the temperature sensor, which is beneficial to improving the safety and reliability of the battery pack.

[0020] Furthermore, the protective effect of the limiting card slot on the temperature-sensitive adhesive specifically means that during the curing process of the temperature-sensitive adhesive, due to the protective effect of the limiting card slot, the temperature-sensitive adhesive will not be scratched due to lack of protection, resulting in the phenomenon of the temperature-sensitive adhesive being exposed. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0022] Figure 1 A schematic structural diagram of a battery pack according to an optional embodiment of the present utility model is shown;

[0023] Figure 2 Shown Figure 1 A schematic structural diagram of a limiting bracket of a battery pack;

[0024] Figure 3 Shown Figure 2 A schematic structural diagram of the limiting bracket on the side away from the battery cell;

[0025] Figure 4 Shown Figure 2 A schematic diagram of the structure of the limiting bracket from a side view;

[0026] Figure 5 Shown Figure 2Schematic diagram of the structure of the limiting bracket facing the battery cell.

[0027] The above drawings include the following reference numerals:

[0028] 10. Battery module; 11. Battery cell; 12. Connecting bar; 13. Explosion-proof valve;

[0029] 20. Limit bracket; 21. Limit plate; 211. Limit slot; 2111. First limit slot section; 2112. Transition slot section; 2113. Second limit slot section; 212. Exhaust hole; 22. Positioning column; 23. Avoidance hole;

[0030] 30. Temperature sensor. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] In order to solve the problem in the prior art that the temperature sensor is directly bonded to the battery cell of the battery pack through temperature-sensitive adhesive, resulting in failure of the temperature sensor to detect temperature due to deformation of the battery cell, the utility model provides a battery pack and an electrical device, wherein the electrical device includes a battery pack, and the battery pack is the battery pack described above and below.

[0033] like Figures 1 to 5 As shown, the battery pack includes a battery cell module 10 and a limiting bracket 20, the battery cell module 10 includes a battery cell 11 and a connecting row 12 connected to the output electrode of the battery cell 11; the limiting bracket 20 is arranged on the battery cell 11, and the limiting bracket 20 is fixedly connected to the connecting row 12; wherein, the surface of the limiting bracket 20 facing the battery cell 11 has a limiting slot 211, the limiting slot 211 at least clamps one end of the temperature sensor 30 having a temperature sensing head, and the limiting slot 211 is filled with temperature sensitive glue, so that at least the temperature sensing head is connected to the battery cell 11 through the temperature sensitive glue.

[0034] Applying the technical solution of the present invention, a battery pack is provided, including a battery cell module 10 and a limiting bracket 20, the battery cell module 10 including a battery cell 11 and a connecting row 12 connected to the output electrode of the battery cell 11; the limiting bracket 20 is arranged on the battery cell 11, and the limiting bracket 20 is fixedly connected to the connecting row 12; wherein, the surface of the limiting bracket 20 facing the battery cell 11 has a limiting slot 211, the limiting slot 211 at least clamps one end of the temperature sensor 30 having a temperature sensing head, and the limiting slot 211 is filled with temperature sensing glue, so that at least the temperature sensing head is connected to the battery cell 11 through the temperature sensing glue.

[0035] In the present application, the limit bracket 20 is fixedly connected to the connecting row 12. When the battery cell 11 is displaced due to expansion, the limit bracket 20 can remain relatively stationary with the battery cell 11. In addition, a limit slot 211 is provided on the surface of the limit bracket 20 facing the battery cell 11. The limit slot 211 is at least used to clamp one end of the temperature sensor 30 having a temperature sensing head, and the limit slot 211 is filled with temperature sensing glue so that at least the temperature sensing head is connected to the battery cell 11 through the temperature sensing glue. The setting of the limit slot 211 plays a role in limiting the end of the temperature sensor 30 having the temperature sensing head. At the same time, it can also play a role in protecting the temperature sensing glue, ensuring that the temperature sensor 30 is always connected to the battery cell 11 through the temperature sensing glue, and the temperature sensor 30 will not be detached, thereby ensuring the temperature sampling reliability of the temperature sensor 30 and ensuring the temperature sampling accuracy of the temperature sensor 30, which is beneficial to improving the safety and reliability of the battery pack.

[0036] Furthermore, the protective effect of the limiting card slot 211 on the temperature sensitive adhesive specifically means that during the curing process of the temperature sensitive adhesive, due to the protective effect of the limiting card slot 211, the temperature sensitive adhesive will not be scratched due to lack of protection, resulting in the phenomenon of the temperature sensitive adhesive being exposed.

[0037] It should be noted that, in the present application, the above-mentioned temperature sensing head specifically refers to a temperature detection head, which is used to detect the temperature value of the object to be measured.

[0038] It should be noted that, in the present application, the above-mentioned connecting bar 12 is a battery cell aluminum bar.

[0039] It should be noted that in the present application, reinforcing ribs can be provided at the positions where the two ends of the limiting bracket 20 are fixedly connected to the two connecting rows 12 to enhance the connection reliability between the two. The provision of the reinforcing ribs performs well in practical applications. It not only provides additional stability during the assembly and transportation of the battery pack, but also can withstand the internal stress caused by thermal expansion and contraction during the operation of the battery pack, effectively avoiding damage to the connection and extending the service life of the battery pack.

[0040] It should be noted that, in the present application, the battery cell module 10 includes a battery cell 11 and two connection rows 12 spaced apart on the battery cell 11; a limiting bracket 20 is provided on the battery cell 11, and both ends of the limiting bracket 20 are fixedly connected to the two connection rows 12 respectively.

[0041] like Figure 1 and Figure 2 As shown, the limiting bracket 20 includes a limiting plate body 21. The surface of the limiting plate body 21 facing the battery cell 11 is partially recessed to form a limiting slot 211. The limiting slot 211 extends along the width direction of the battery cell 11 and passes through the limiting plate body 21. The bottom surface of the limiting slot 211 is provided with an exhaust hole 212. In this way, by providing the exhaust hole 212 on the bottom surface of the limiting slot 211, on the one hand, it can be used as an observation hole to observe whether the temperature sensitive glue fully covers the temperature sensor 30 and whether the temperature sensor 30 is placed in place, thereby ensuring the temperature sensitivity of the temperature sensor 30. On the other hand, during the curing process of the temperature sensitive glue, it is also beneficial to discharge bubbles in the temperature sensitive glue through the exhaust hole 212.

[0042] Optionally, the diameter of the exhaust holes 212 is 3 to 5 mm, and there are two or more of them, which are distributed at different positions on the bottom surface of the limit slot 211, so as to facilitate observation of the temperature changes of the battery cell 11 from different angles, thereby ensuring the stable operation of the battery pack. The surface of the limit bracket 20 is also provided with an anti-static coating, which can effectively prevent static electricity from interfering with the temperature sensor 30 and maintain the normal operation of the temperature sensor 30. The combination of the exhaust holes 212 (observation holes) and the anti-static design makes the temperature monitoring of the battery pack more comprehensive and accurate, especially in industrial applications that require high-precision temperature control, such as power supplies for precision instruments, aerospace battery systems, etc. This design can significantly improve the overall performance of the system.

[0043] It should be noted that in this application, the limiting slot 211 is designed in a U- or V-shape to ensure the stability of the temperature sensor 30 on the limiting bracket 20 while facilitating installation and removal. This design is particularly suitable for the thermal management system of the battery pack, and can maintain the stability and accuracy of the temperature sensor 30 under various temperature conditions. This is particularly important for real-time monitoring of battery temperature and preventing safety issues caused by overheating or overcooling in scenarios such as electric vehicles and energy storage systems.

[0044] Optionally, there are multiple exhaust holes 212, and the multiple exhaust holes 212 are spaced apart along the extending direction of the limiting slot 211. In this way, the observation reliability when used as an observation hole and the exhaust reliability when used as an exhaust hole are ensured.

[0045] It should be noted that, in the present application, at least the limiting slot 211 limits the temperature sensor head so that the temperature sensor head is in direct contact with the metal area of the battery cell 11. In this way, the reliability of the temperature sensor 30 in measuring the temperature of the battery cell 11 is ensured.

[0046] It should be noted that, in the present application, the metal area of the battery cell 11 has a metal QR code.

[0047] like Figure 1 and Figure 2 As shown, the limiting bracket 20 also includes a positioning post 22, which is protruding from the surface of the limiting plate 21 on the side facing away from the battery cell 11. The connecting bar 12 has a positioning hole at the position opposite the positioning post 22. The positioning post 22 passes through the positioning hole and is thermally riveted to the connecting bar 12. There are two positioning posts 22, which are respectively protruding from both ends of the limiting plate 21. Both connecting bars 12 have positioning holes, and the two positioning posts 22 correspond one-to-one with the two positioning holes. This ensures the reliability of the thermal riveting connection between the limiting bracket 20 and the connecting bar 12.

[0048] It should be noted that in this application, the temperature sensor 30 adopts the form of a water drop head, and the wires at both ends are American standard wire harnesses with a cross-sectional area of 22AWG. The structural thermal conductive adhesive is Huitian 9761, which has a certain structural strength and a curing time of 24 hours.

[0049] It should be noted that, in the present application, the aforementioned heat riveting connection specifically refers to heating both ends of the limit bracket 20 to a certain temperature and then forming a firm connection with the connecting bar 12 under pressure, thereby ensuring the stability and durability between the limit bracket 20 and the battery cell module 10. The stability and reliability of the heat riveting connection provides a solid physical foundation for the daily use of the battery pack and its operation under extreme conditions. In particular, in scenarios such as rapid charging and discharging, high-temperature and high-speed driving, it can effectively avoid temperature monitoring errors caused by unstable connections and ensure the safety of the battery pack.

[0050] It should be noted that, in the present application, the limiting plate body 21 and the positioning column 22 are integrally formed. In this way, the limiting bracket 20 is made of PP+10% GF material, which is heated and injected into the mold and then cooled. It has the characteristics of high processing precision and good stability. This material not only has sufficient strength to carry the temperature sensor 30 and withstand the stress in the working environment of the battery pack, but also has good heat resistance and electrical properties, so that it can still maintain a stable working state in a complex working environment, effectively extending the service life of the battery pack, reducing maintenance costs, and providing a strong guarantee for the safe operation of the battery pack. The limiting bracket 20 made of this material not only performs well in electric vehicles and portable electronic devices, but also can effectively cope with the challenges brought by long-term continuous work in scenarios such as large-scale energy storage systems and fixed base station power supplies, ensuring the long-term stability and economy of the battery system.

[0051] like Figure 1 and Figure 2 As shown, the limiting plate 21 is in a parallelogram shape, and the two diagonal positions of the limiting plate 21 are respectively connected to the two connecting bars 12. In this way, the diagonal tilting design ensures that the connecting bars 12 at both ends of the battery cell 11 are exactly the same, reducing structural complexity and manufacturing costs.

[0052] like Figure 1 and Figure 2 As shown, the battery cell 11 is provided with an explosion-proof valve 13, located between two connecting bars 12. A clearance hole 23 is provided at a position where the limiting bracket 20 faces the explosion-proof valve 13. This prevents the explosion-proof valve 13 from being blocked and affecting the opening and release of gas from the battery cell 11 in the event of an abnormality in the battery cell 11, thereby preventing an explosion and ensuring the safety of the battery pack.

[0053] It should be noted that in the present application, at least one sealing ring is provided around the periphery of the via hole 23 to enhance the sealing of the area and prevent external substances from entering the interior of the battery pack and affecting the safety of the battery pack. This detailed design not only reflects the high attention paid to the safety of the battery pack, but also can effectively avoid the corrosion and short circuit risks of the battery pack in harsh environments, especially under extreme conditions such as high temperature, high humidity, and high altitude. The importance of this design is even more prominent.

[0054] It should be noted that, in the present application, the shape of the avoidance hole 23 is adapted to the shape of the installation area of the explosion-proof valve 13. In this way, the avoidance reliability of the avoidance hole 23 to the explosion-proof valve 13 is ensured, and the opening reliability of the explosion-proof valve 13 is ensured.

[0055] It should be noted that, in this application, in order to ensure the reliability of the limit slot 211 on the temperature sensor 30, and to open the exhaust hole 212 on the bottom surface of the limit slot 211, as shown in FIG. Figure 4 and Figure 5 As shown, in the extending direction of the limiting slot 211, the limiting slot 211 includes a first limiting slot section 2111, a transition slot section 2112, and a second limiting slot section 2113, which are sequentially connected. The width of the first limiting slot section 2111 and the width of the second limiting slot section 2113 are both smaller than the width of the transition slot section 2112. At least one of the first limiting slot section 2111 and the second limiting slot section 2113 engages with the temperature sensor 30. The bottom surface of the transition slot section 2112 is provided with an exhaust hole 212. This ensures that the width of the transition slot section 2112 is sufficient, thereby ensuring the convenience of providing the exhaust hole 212 on the bottom surface of the transition slot section 2112, ensuring that the exhaust hole 212 is large enough, ensuring the reliability of the exhaust through the exhaust hole 212, and ensuring convenient observation when the exhaust hole 212 is used as an observation hole.

[0056] like Figure 4 As shown, the notch of the first limiting groove section 2111 is configured in a constricted shape to limit the temperature sensor 30 within the first limiting groove section 2111; and / or the notch of the second limiting groove section 2113 is configured in a constricted shape to limit the temperature sensor 30 within the second limiting groove section 2113. In this way, by configuring the notch of the first limiting groove section 2111 to be a constricted structure, the reliability of the temperature sensor 30 is ensured, and by configuring the notch of the second limiting groove section 2113 to be a constricted structure, the reliability of the temperature sensor 30 is ensured.

[0057] It should be noted that in an embodiment of the present application that is not shown in the figure, the battery pack also includes a temperature compensation element. The temperature compensation element is located on the back of the limit bracket 20 and is arranged near the temperature sensor 30. It is intended to compensate for the measurement error that may be caused by changes in ambient temperature and improve the accuracy of temperature monitoring. The addition of the temperature compensation element enables the limit bracket 20 to maintain monitoring accuracy within a wider range of ambient temperature. This is particularly important for battery systems used in outdoor environments and areas with large temperature fluctuations, such as solar energy storage systems and wind power generation storage systems. It can significantly improve the adaptability and monitoring capabilities of the system and provide more comprehensive safety protection for the battery pack.

[0058] Applying the technical solution of the present invention, a battery pack is provided, including a battery cell module 10 and a limiting bracket 20, the battery cell module 10 including a battery cell 11 and two connecting rows 12 spaced apart on the battery cell 11; the limiting bracket 20 is arranged on the battery cell 11, and the two ends of the limiting bracket 20 are respectively connected to the two connecting rows 12 by thermal riveting; wherein, the surface of the limiting bracket 20 facing the battery cell 11 has a limiting slot 211, the limiting slot 211 is at least used to clamp one end of the temperature sensor 30 having a temperature sensing head, and the limiting slot 211 is filled with temperature sensing glue, so that at least the temperature sensing head is connected to the battery cell 11 through the temperature sensing glue.

[0059] In the present application, the two ends of the limit bracket 20 are respectively connected to the two connecting rows 12 by thermal riveting. When the battery cell 11 is displaced due to expansion, the limit bracket 20 can remain relatively stationary with the battery cell 11. In addition, a limit slot 211 is provided on the surface of the limit bracket 20 facing the battery cell 11. The limit slot 211 is at least used to clamp the end of the temperature sensor 30 with the temperature sensing head, and the limit slot 211 is filled with temperature sensitive glue so that at least the temperature sensing head is connected to the battery cell 11 through the temperature sensitive glue. The setting of the limit slot 211 plays a role in limiting the end of the temperature sensor 30 with the temperature sensing head. At the same time, it can also play a role in protecting the temperature sensitive glue, ensuring that the temperature sensor 30 is always connected to the battery cell 11 through the temperature sensitive glue, thereby ensuring the temperature sampling reliability of the temperature sensor 30 and ensuring the temperature sampling accuracy of the temperature sensor 30, which is beneficial to improving the safety and reliability of the battery pack.

[0060] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0061] Unless otherwise specifically stated, the relative arrangement of the parts and steps, the numerical expressions and the numerical values set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values should be interpreted as being merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0062] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0063] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, tasks, devices, components and / or combinations thereof.

[0064] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0065] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A battery pack, characterized in that: include: A battery cell module (10), the battery cell module (10) comprising a battery cell (11) and a connection bar (12) connected to an output electrode of the battery cell (11); A limiting bracket (20), the limiting bracket (20) being arranged on the battery core (11), and the limiting bracket (20) being fixedly connected to the connecting bar (12); The limiting bracket (20) has a limiting slot (211) on a surface facing the battery core (11), the limiting slot (211) at least holds one end of a temperature sensor (30) having a temperature sensing head, and the limiting slot (211) is filled with temperature sensing glue, so that at least the temperature sensing head is connected to the battery core (11) through the temperature sensing glue.

2. The battery pack according to claim 1, wherein: The limiting bracket (20) comprises: A limiting plate body (21) is provided, wherein a portion of the surface of the limiting plate body (21) facing the battery core (11) is recessed to form the limiting card slot (211), the limiting card slot (211) passes through the limiting plate body (21), and an exhaust hole (212) is provided on the bottom surface of the limiting card slot (211).

3. The battery pack according to claim 2, wherein: There are a plurality of exhaust holes (212), and the plurality of exhaust holes (212) are arranged at intervals along the extension direction of the limiting slot (211).

4. The battery pack according to claim 1, wherein: At least the limiting slot (211) limits the temperature sensing head so that the temperature sensing head is in direct contact with the metal area of the battery core (11).

5. The battery pack according to claim 2, wherein: The limiting bracket (20) further includes: a positioning post (22), the positioning post (22) being protrudingly arranged on a surface of the limiting plate body (21) facing away from the battery core (11), a positioning hole being provided at a position where the connecting bar (12) is opposite to the positioning post (22), the positioning post (22) passing through the positioning hole and being connected to the connecting bar (12) by thermal riveting; The positioning posts (22) include two, and the two positioning posts (22) are respectively protruded and arranged at the two ends of the limiting plate body (21), and the two connecting rows (12) both have the positioning holes, and the two positioning posts (22) correspond to the two positioning holes one by one.

6. The battery pack according to claim 5, characterized in that: The limiting plate body (21) and the positioning column (22) are integrally formed.

7. The battery pack according to claim 2, characterized in that: The limiting plate body (21) is in the shape of a parallelogram, and two diagonal positions of the limiting plate body (21) are respectively connected to the two connecting rows (12).

8. The battery pack according to any one of claims 1 to 7, characterized in that: An explosion-proof valve (13) is provided on the battery core (11), and the explosion-proof valve (13) is located between the two connection rows (12). An avoidance hole (23) is provided at a position where the limiting bracket (20) is opposite to the explosion-proof valve (13).

9. The battery pack according to claim 8, characterized in that: The shape of the avoidance hole (23) is adapted to the shape of the installation area of the explosion-proof valve (13).

10. The battery pack according to any one of claims 1 to 7, characterized in that: In the extension direction of the limiting slot (211), the limiting slot (211) comprises a first limiting slot section (2111), a transition slot section (2112), and a second limiting slot section (2113) which are connected in sequence; The groove width of the first limiting groove section (2111) and the groove width of the second limiting groove section (2113) are both smaller than the groove width of the transition groove section (2112); at least one of the first limiting groove section (2111) and the second limiting groove section (2113) is engaged with the temperature sensor (30); and an exhaust hole (212) is provided on the groove bottom surface of the transition groove section (2112).

11. The battery pack according to claim 10, wherein: The notch of the first limiting groove section (2111) is configured in a constricted shape so as to limit the temperature sensor (30) within the first limiting groove section (2111); and / or, The notch of the second limiting groove section (2113) is configured in a constricted shape so as to limit the temperature sensor (30) within the second limiting groove section (2113).

12. An electrical device, characterized in that: The invention comprises a battery pack, wherein the battery pack is the battery pack according to any one of claims 1 to 11.

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