Battery module and battery pack

Abstract

The utility model provides a battery module and a battery pack, and relates to the technical field of batteries, the battery module comprises a battery cell, a temperature sensor and at least one fuse; the plurality of battery cells are sequentially arranged along a first direction; a temperature sensor is arranged between every two adjacent battery cells; the fuse is arranged between the two adjacent battery cells, and the fuse is electrically connected with the two adjacent battery cells. According to the battery module provided by the embodiment of the invention, temperature monitoring can be realized on all the battery cells in the battery module, so that the accuracy of temperature monitoring is improved, and when the temperature of one or more battery cells in the battery module is abnormal, the abnormal temperature can be sensed in time, and then a response is made. The fuses can cut off the electric connection between the adjacent battery cells when the battery module is abnormal, so that the interior of the battery module is partially or completely disconnected, and the risk of occurrence and spreading of thermal runaway is reduced.

Description

Technical Field

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

[0002] In related technologies, temperature sensors in battery modules are typically attached to the outermost cells, making them unable to accurately detect temperature variations between cells. When thermal runaway occurs within a battery module, this can lead to a delay in signal transmission, making it impossible to effectively prevent the occurrence and spread of thermal runaway, thus compromising the safety of the battery module. Utility Model Content

[0003] The embodiments of the present application provide a battery module and a battery pack that can promptly determine whether a battery module has thermal runaway, thereby responding in a timely manner, reducing the risk of occurrence and spread of thermal runaway, and improving the safety of the battery module.

[0004] In a first aspect, an embodiment of the present application provides a battery module including a battery cell, a temperature sensor, and at least one fuse;

[0005] The plurality of battery cells are arranged in sequence along a first direction;

[0006] A temperature sensor is provided between every two adjacent battery cells;

[0007] The fuse is arranged between two adjacent battery cells, and the fuse is electrically connected to the two adjacent battery cells.

[0008] In some embodiments, every two adjacent battery cells form a battery cell group, and the temperature sensor and the fuse arranged between two battery cells in the same battery cell group are connected in series to form a fuse module; the fuse module is electrically connected to the two adjacent battery cells.

[0009] In some embodiments, multiple battery cells are connected in series through a temperature sensor and a fuse; wherein one end of the temperature sensor and the fuse is electrically connected to the negative electrode of one battery cell, and the other end is electrically connected to the positive electrode of another adjacent battery cell.

[0010] In some embodiments, a plurality of battery cells are connected in parallel; a fuse is provided between every two adjacent battery cells;

[0011] The two ends of the fuse module are respectively electrically connected to the positive electrodes of the two adjacent battery cells, or the two ends of the fuse module are respectively electrically connected to the negative electrodes of the two battery cells.

[0012] In some embodiments, the temperature sensor is fixed to a side wall of the battery core arranged along the first direction by means of thermally conductive adhesive.

[0013] In some embodiments, a buffer assembly is further provided between two adjacent battery cells.

[0014] In some embodiments, the fuse is placed between the poles of two adjacent cells.

[0015] In some embodiments, the temperature sensor is an NTC thermistor.

[0016] In a second aspect, an embodiment of the present application provides a battery pack, comprising the battery module and the battery pack frame as described above;

[0017] The battery pack frame includes a first frame and a second frame arranged opposite to each other, and a connecting plate arranged between the first frame and the second frame;

[0018] The first frame and the second frame are respectively arranged at opposite ends of the battery module in a second direction, wherein the second direction is perpendicular to the first direction;

[0019] The first frame and the second frame are connected by a connecting plate.

[0020] In some embodiments, a first plug-in slot is provided on the first frame, and a second plug-in slot is provided on the second frame;

[0021] Insert buckles are provided at opposite ends of the connecting plate in the second direction;

[0022] The connecting plate is respectively plugged into the first plugging slot and the second plugging slot through plugging buckles arranged at two opposite ends in the second direction.

[0023] In some embodiments, the first frame and the second frame each include a frame body and a first bending portion and a second bending portion arranged at opposite ends of the frame body in a third direction; the first bending portion and the second bending portion are bent toward a direction close to the battery module; wherein the third direction is perpendicular to the first direction and the second direction.

[0024] In some embodiments, the first bent portion is movably connected to the frame body, and the first bent portion is used to cover the fuse.

[0025] In some embodiments, the first frame body and / or the second frame body is a hollow structure.

[0026] Beneficial effects of the embodiments of the present application:

[0027] In an embodiment of the present application, a battery module includes battery cells, a temperature sensor, and at least one fuse, wherein a plurality of battery cells are arranged in sequence along a first direction, a temperature sensor is provided between every two adjacent battery cells, and a fuse is provided between two adjacent battery cells, and the fuse is electrically connected to the two adjacent battery cells. By providing a temperature sensor between every two adjacent battery cells, it is possible to monitor the temperature of all battery cells in the battery module, thereby improving the accuracy of temperature monitoring. When the temperature of one or more battery cells in the battery module is abnormal, it can be sensed in time and then responded to. The fuse is electrically connected between two adjacent battery cells. When an abnormality occurs in the battery module, it can cut off the electrical connection between the adjacent battery cells, causing partial or complete circuit breakage in the battery module to reduce the risk of thermal runaway occurrence and spread. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. 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.

[0029] Figure 1 is a schematic top view of the battery module provided in an embodiment of the present application;

[0030] Figure 2 yes Figure 1 Cross-sectional view at AA in the middle;

[0031] Figure 3 is a schematic diagram of the three-dimensional structure of a battery module provided in an embodiment of the present application;

[0032] Figure 4 is a schematic diagram of the three-dimensional structure of a battery pack provided in an embodiment of the present application;

[0033] Figure 5 is a schematic diagram of the exploded structure of a battery pack provided in an embodiment of the present application;

[0034] Figure 6 It is a schematic diagram of the three-dimensional structure of the first frame provided in an embodiment of the present application.

[0035] Description of reference numerals:

[0036] 100. Battery module; 110. Battery cell; 111. First battery cell; 112. Second battery cell; 113. Third battery cell; 114. Fourth battery cell; 115. Fifth battery cell; 120. Battery cell group; 121. First battery cell group; 122. Second battery cell group; 123. Third battery cell group; 124. Fourth battery cell group; 130. Temperature sensor; 140. Fuse; 150. Fuse module; 160. Buffer assembly; 200. Battery pack frame; 210. First frame; 211. Frame body; 212. First bending portion; 213. Second bending portion; 220. Second frame; 230. Connecting plate; 300. Battery pack. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings 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 making 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 specified, the directional words used, such as "upper" and "lower", 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; and "inside" and "outside" refer to the outline of the device.

[0038] In a first aspect, embodiments of the present application provide a battery module 100 comprising battery cells 110, a temperature sensor 130, and at least one fuse 140. Multiple battery cells 110 in the battery module 100 are arranged sequentially along a first direction X, with a temperature sensor 130 disposed between each two adjacent battery cells 110. A fuse 140 is disposed between two adjacent battery cells 110 and is electrically connected to the two adjacent battery cells 110.

[0039] For example, Figure 1-Figure 3 As shown, the battery module 100 includes five battery cells, namely a first battery cell 111, a second battery cell 112, a third battery cell 113, a fourth battery cell 114, and a fifth battery cell 115, arranged in sequence along a first direction X. A temperature sensor 130 is provided between every two adjacent battery cells 110. In other words, the number of temperature sensors 130 is four, and the temperature sensors 130 provided between the battery cells 110 can sense the temperature of the adjacent battery cells 110.

[0040] The temperature sensor 130 is a sensor that can sense temperature and convert it into an output signal. In the embodiment of the present application, the temperature sensor 130 is preferably a contact temperature sensor. By making good contact between the temperature sensor 130 and the battery cell, it can more accurately measure the temperature of the battery cell.

[0041] Because a temperature sensor 130 is provided between any two adjacent cells 110 in the battery module 100, any thermal runaway event in any cell in the battery module 100 can be promptly detected by the adjacent temperature sensor 130. This improves the accuracy of temperature monitoring for each cell 110 in the battery module 100, allowing for a timely response to thermal runaway events and reducing their spread. Furthermore, placing the temperature sensor 130 between two cells 110 further improves the accuracy of temperature monitoring by the temperature sensor 130, and the two adjacent cells 110 can also protect the temperature sensor 130.

[0042] The battery module 100 further includes at least one fuse 140 . The fuse 140 is also disposed between two adjacent battery cells 110 , and the fuse 140 is electrically connected to the adjacent battery cells 110 .

[0043] Fuse 140 is a circuit protector. When the current in the circuit exceeds the rated current set by fuse 140, or the temperature exceeds the withstand temperature of fuse 140, the fuse inside fuse 140 will be heated to the melting point and melt, thereby cutting off the circuit and preventing the equipment in the circuit from being damaged or causing dangers such as fire due to overcurrent or high temperature.

[0044] By setting the fuse 140 between adjacent battery cells 110 and electrically connecting the fuse 140 to the adjacent battery cells 110, when a fault occurs in the battery module 100, the fuse 140 can be blown, thereby disconnecting the electrical connection between the adjacent battery cells 110, reducing or avoiding further transmission of large current in the battery module 100, and thereby reducing the risk of occurrence and spread of thermal runaway.

[0045] Specifically, if Figure 1 As shown, in addition to the temperature sensor 130, a fuse 140 is also provided between adjacent battery cells 110. The fuse 140 can be provided only between one or more groups of two adjacent battery cells 110, or alternatively, between every two adjacent battery cells 110 within the battery module 100. The fuse 140 can disconnect some or all of the battery cells 110 in the event of a fault in the battery module 100, thereby reducing the risk of thermal runaway occurring and spreading.

[0046] In some embodiments, a cell group 120 is formed between every two adjacent cells 110, and the temperature sensor 130 and the fuse 140 disposed between two cells 110 in the same cell group 120 are connected in series to form a fuse module 150. Figure 1 As shown, the battery module 100 includes a plurality of battery cells 110, and every two adjacent battery cells 110 form a battery cell group 120. Each battery cell group 120 includes two adjacent battery cells 110. If the battery cell group 120 includes both a temperature sensor 130 and a fuse 140, the fuse 140 of the temperature sensor 130 arranged in the same battery cell group 120 is connected in series to form a fuse module 150.

[0047] By connecting the temperature sensor 130 and the fuse 140 in series between two battery cells 110 in the same battery cell group 120, a fuse module 150 is formed. The fuse module 150 is electrically connected to the two adjacent battery cells 110 and is positioned in the current path between the battery cells 110. When a battery module 100 malfunctions and the temperature and current rise abnormally, the fuse 140 in the fuse module 150 can melt, thereby severing the current path between the adjacent battery cells 110, isolating thermal runaway or other faults, reducing the risk of thermal runaway spreading and propagation, and improving the safety of the battery module 100.

[0048] For example, Figure 1-Figure 3 As shown, the battery module 100 includes a first battery cell 111, a second battery cell 112, a third battery cell 113, a fourth battery cell 114, and a fifth battery cell 115 arranged in sequence, wherein the first battery cell 111 and the second battery cell 112 form a first battery cell group 121, the second battery cell 112 and the third battery cell 113 form a second battery cell group 122, the third battery cell 113 and the fourth battery cell 114 form a third battery cell group 123, and the fourth battery cell 114 and the fifth battery cell 115 form a fourth battery cell group 124. A temperature sensor 130 is provided in each battery cell group 120, and a fuse 140 is provided in at least one battery cell group 120. When both the temperature sensor 130 and the fuse 140 are provided in a battery cell group 120, the two are connected in series to form a fuse module 150. Specifically, the series connection of the temperature sensor 130 and the fuse 140 arranged in the same battery cell group 120 can be arranged in the following manner: one end of the temperature sensor 130 is connected to a battery cell 110 in the battery cell group 120, and the other end is connected to the first end of the fuse 140, and the second end of the fuse 140 is connected to another battery cell 110 in the same battery cell group 120, so that the fuse module 150 formed by the series connection of the temperature sensor 130 and the fuse 140 is arranged between two battery cells 110 in a battery cell group 120.

[0049] In some embodiments, multiple battery cells 110 are connected in series via a temperature sensor 130 and a fuse 140. One end of the temperature sensor 130 and the fuse 140 are electrically connected to the negative electrode of one battery cell 110, and the other end is electrically connected to the positive electrode of another adjacent battery cell 110. When each battery cell 110 in the battery module 100 is connected in series, that is, when the positive electrode of a battery cell 110 in the battery module 100 is connected to the negative electrode of an adjacent battery cell 110, all battery cells 110 in the battery module 100 form an integrated current path, and the temperature sensor 130 and the fuse 140 are both provided in this current path. A circuit break between any two battery cells 110 will cause the entire battery module 100 to break. Therefore, when the battery cells 110 in the battery module 100 are connected in series, it is possible to choose to only provide at least one fuse 140 in the battery module 100. This can reduce the number of fuses 140 used and save costs while ensuring the effectiveness of preventing the spread of thermal runaway.

[0050] like Figure 1 and Figure 3 As shown, the positive electrode of the first battery cell 111 is electrically connected to the negative electrode of the second battery cell 112, the positive electrode of the second battery cell 112 is electrically connected to the negative electrode of the third battery cell 113, the positive electrode of the third battery cell 113 is electrically connected to the negative electrode of the fourth battery cell 114, and the positive electrode of the fourth battery cell 114 is electrically connected to the negative electrode of the fifth battery cell 115, thereby realizing the series connection between the first battery cell 111, the second battery cell 112, the third battery cell 113, the fourth battery cell 114 and the fifth battery cell 115.

[0051] A temperature sensor 130 is provided between each adjacent battery cell 110. The multiple temperature sensors 130 can respectively monitor the temperatures of the multiple battery cells 110 in the battery module 100 to improve the accuracy of temperature monitoring. When one or more battery cells 110 fail, the temperature sensor 130 adjacent to the failed battery cell 110 can monitor the temperature change in time, thereby sensing the occurrence or spread of thermal runaway, and then intervene in time to reduce the risk of occurrence and spread of thermal runaway.

[0052] The fuse 140 can be provided only in one or more groups of two adjacent battery cells 110, or can be provided between every two adjacent battery cells 110 in the battery module 100. Since the first battery cell 111, the second battery cell 112, the third battery cell 113, the fourth battery cell 114, and the fifth battery cell 115 are connected in series, an overall current path is formed, and the fuse 140 is also located in this current path. When one or more battery cells 110 in the battery module 100 fail, the current in the current path increases, and the fuse 140 melts, disconnecting the current path, thereby reducing the risk of component damage or thermal runaway caused by excessive current.

[0053] Among them, the fuse 140 can be preferably arranged at at least one end of the battery module 100, for example, between the first battery cell 111 and the second battery cell 112, and / or between the fourth battery cell 114 and the fifth battery cell 115, so that when a fault occurs in the battery module 100, the connection between at least one end of the battery module 100 and the external circuit can be cut off in time to prevent the fault from further expanding, and to protect the battery cell 110 in the battery module 100 to reduce further damage.

[0054] It is understandable that when the battery cells 110 in the battery module 100 are connected in series, those skilled in the art can select the number and position of the fuses 140 according to specific application scenarios and actual needs.

[0055] In some embodiments, multiple battery cells 110 are connected in parallel; a fuse 140 is provided between each two adjacent battery cells 110. The two ends of the fuse module 150 are respectively electrically connected to the positive electrodes of the two adjacent battery cells 110, or the two ends of the fuse module 150 are respectively electrically connected to the negative electrodes of the two battery cells 110.

[0056] When the battery cells 110 in the battery module 100 are connected in parallel, a fuse 140 is provided between every two adjacent battery cells 110, and the fuse 140 provided in the same battery cell group 120 further forms a fuse module 150 with the temperature sensor 130. In other words, every two adjacent battery cells 110 in the battery module 100 are provided with a fuse module 150, and the fuse module 150 can be provided on the positive side or the negative side of the battery module 100. When one or more battery cells 110 in the battery module 100 fail, the temperature sensor 130 can promptly sense the temperature change, and the fuse 140 can melt in response to the change in temperature and current, thereby cutting off the electrical connection relationship between all battery cells 110 in the battery module 100 and causing the battery cells 110 in the battery module 100 to be short-circuited.

[0057] When the battery cells 110 in the battery module 100 are connected in parallel, by setting a fuse module 150 between every two adjacent battery cells 110, when a failure occurs in the battery module 100, the electrical connection between the battery cells 110 in the battery module 100 can be completely cut off, thereby further improving the safety of the battery module 100 and further reducing the occurrence and spread of thermal runaway.

[0058] It is understood that when the battery cells 110 in the battery module 100 are connected in parallel, the fuse module 150 can be arranged on the positive electrode side of the battery module 100 or on the negative electrode side of the battery module 100. In addition, the battery module 100 can also adopt other configurations, such as a configuration that is first connected in parallel and then in series, and the position and number of the temperature sensor 130 and the fuse 140 can be set according to specific needs.

[0059] In some embodiments, the temperature sensor 130 is secured to the sidewalls of the battery cell 110 along the first direction X using thermally conductive adhesive. Thermally conductive adhesive has excellent thermal conductivity and good adhesion properties, allowing it to firmly adhere the temperature sensor 130 to the battery cell 110 while providing good thermal conductivity, thereby ensuring the accuracy of temperature monitoring by the temperature sensor 130. Furthermore, placing the temperature sensor 130 on the sidewalls of the battery cell 110 along the first direction X can reduce external interference and improve the detection accuracy of the temperature sensor 130.

[0060] For example, the thermally conductive adhesive can be thermally conductive silicone. Thermally conductive silicone can maintain stable performance in high-temperature environments and can withstand high temperatures. Thermally conductive silicone can maintain stable performance over a wide temperature range and maintain good thermal conductivity even in alternating hot and cold environments. The battery module 100 has a large temperature difference between its operating and non-operating states, and high temperatures are generated during operation. Using thermally conductive silicone can improve stability.

[0061] Furthermore, the temperature sensor 130 is disposed on the side wall of the battery cell 110 near the center. Figure 2 As shown, the temperature sensor 130 is disposed at the center of the battery cell 110 and is clamped between two adjacent battery cells 110 , which enables the temperature sensor 130 to measure the temperature more accurately and improves the protection of the battery cell 110 by the temperature sensor 130 .

[0062] In some embodiments, as Figure 2 As shown, a buffer assembly 160 is also provided between two adjacent battery cells 110. Providing the buffer assembly 160 between the battery cells 110 can alleviate the stress generated during the charging and discharging process of the battery cells 110, reduce the vibration and noise generated by the battery cells 110 during operation, provide a buffer space for the expansion and contraction of the battery cells 110, and ensure appropriate preload between the battery cells 110. Furthermore, in the embodiment of the present application, providing the buffer assembly 160 between the battery cells 110 can prevent the temperature sensor 130 disposed between the battery cells 110 from being squeezed, thereby protecting the temperature sensor 130.

[0063] Exemplarily, the buffer component 160 may be foam, which has a porous structure, can effectively absorb and disperse impact energy, has good buffering performance, and has good rebound performance.

[0064] In some embodiments, the fuse 140 is disposed between the poles of two adjacent battery cells 110. By disposing the fuse 140 between the poles of two adjacent battery cells 110, the electrical connection between the fuse 140 and the two adjacent battery cells 110 is facilitated, thereby improving the compactness of the structure.

[0065] In some embodiments, the temperature sensor 130 is an NTC thermistor. An NTC thermistor is a negative temperature coefficient thermistor whose resistance decreases as temperature increases. NTC thermistors have many advantages, including high sensitivity, good stability, fast response speed, compact size, high reliability, and low cost. Furthermore, in the embodiments of the present application, the NTC thermistor is connected in series with the fuse 140 to form the fuse module 150. When a fault occurs in the battery module 100, the temperature rises abnormally, and the resistance of the NTC thermistor decreases as the temperature increases, thereby increasing the current in the current path and thereby improving the sensitivity of the fuse 140.

[0066] In a second aspect, an embodiment of the present application provides a battery pack 300, comprising the battery module 100 and the battery pack frame 200 as described above. The battery pack frame 200 comprises a first frame 210 and a second frame 220 arranged opposite to each other, and a connecting plate 230 arranged between the first frame 210 and the second frame 220, wherein the first frame 210 and the second frame 220 are respectively arranged at opposite ends of the battery module 100 in the second direction Y, the second direction Y is perpendicular to the first direction X, and the first frame 210 and the second frame 220 are connected by the connecting plate 230. Figure 4 and Figure 5 As shown, the first frame 210 and the second frame 220 are respectively arranged at the opposite ends of the battery module 100 in the second direction Y, and the connecting plate 230 is arranged between the first frame 210 and the second frame 220, and is used to connect the first frame 210 and the second frame 220 to form a whole, thereby wrapping the battery module 100 within the battery pack frame 200.

[0067] The first frame 210 and the second frame 220 distributed at the opposite ends of the battery module 100 in the second direction Y can clamp the battery module 100, and the connecting plate 230 can connect the first frame 210 and the second frame 220 into a whole to form a battery pack frame 200, thereby protecting the battery module 100.

[0068] In some embodiments, the first frame 210 is provided with a first insertion slot, the second frame 220 is provided with a second insertion slot, and the connecting plate 230 is provided with insertion buckles at opposite ends in the second direction Y. The connecting plate 230 is respectively inserted into the first insertion slot and the second insertion slot via the insertion buckles provided at opposite ends in the second direction Y. In other words, the connecting plate 230, the first frame 210, and the second frame 220 are formed into a single unit through insertion.

[0069] Exemplarily, the first plug-in slot and the second plug-in slot are both half-I-shaped grooves, and the connecting buckle is correspondingly configured as a half-I-shaped buckle.

[0070] The embodiment of the present application adopts a plug-in connection method of the first frame 210, the second frame 220 and the connecting plate 230, replacing the conventional bolt connection method or steel belt fixing method, thereby reducing the disadvantages of bolt connection being difficult to withstand shear force or steel belt fixing requiring clamps.

[0071] In addition, corresponding connecting holes are provided on the first frame 210, the second frame 220 and the connecting plate 230. When the connecting plate 230 is inserted into the first frame 210 and the second frame 220, it can be further fixed through the connecting holes, thereby increasing the tensile strength between the first frame 210, the second frame 220 and the connecting plate 230 and improving the stability of the connection.

[0072] In some embodiments, the first frame 210 and the second frame 220 each include a frame body 211 and first and second bent portions 212, 213 disposed at opposite ends of the frame body 211 in a third direction Z. The first and second bent portions 212, 213 are bent toward the battery module 100. The third direction Z is perpendicular to the first and second directions X and Y.

[0073] like Figure 4 and Figure 6 As shown, the frame body 211 can cover the side of the battery module 100. The frame body 211 is provided with a first bending portion 212 and a second bending portion 213 at the opposite ends in the third direction Z, respectively, which are bent toward the direction close to the battery module 100 to fix the battery module 100, replacing the functions of the top plate and the bottom plate. While fixing the battery module 100 in the battery pack frame 200, it can increase the heat dissipation area of the battery module 100.

[0074] In some embodiments, the first bent portion 212 is movably connected to the frame body 211, and the first bent portion 212 is used to cover the fuse 140. Figure 4 and Figure 5 As shown, the first bending portion 212 bends toward the direction close to the battery module 100, and can cover the pole and fuse 140 in the battery module 100 to protect the pole and fuse 140, and the first bending portion 212 is movably connected to the frame body 211, which facilitates the inspection or replacement of the fuse 140.

[0075] For example, Figure 6 As shown, the first bending portion 212 is movably connected to the frame body 211 via a hinge, and the first bending portion 212 can be turned over with the first direction X as the axial direction, so as to facilitate inspection and replacement of the fuse 140.

[0076] In some embodiments, the frame body 211 is a hollow structure. By setting the frame body 211 as a hollow structure, the heat dissipation area of the battery module 100 can be further increased.

[0077] like Figure 4-Figure 6 As shown, the frame body 211 includes a plurality of hollow areas, which can increase the heat exchange between the battery module 100 and the outside world, thereby increasing the heat dissipation area and improving the heat dissipation capacity.

[0078] The above is a detailed introduction to the embodiments of the present application. Specific examples are used herein 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 those skilled in the art, based on the ideas of the present application, there may be changes in the specific implementation methods 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: including a battery cell, a temperature sensor and at least one fuse; A plurality of battery cells are arranged in sequence along a first direction; A temperature sensor is provided between every two adjacent battery cells; The fuse is disposed between two adjacent battery cells, and the fuse is electrically connected to the two adjacent battery cells.

2. The battery module according to claim 1, wherein: Every two adjacent battery cells form a battery cell group, and the temperature sensor and the fuse arranged between two battery cells in the same battery cell group are connected in series to form a fuse module; The fuse module is electrically connected to two adjacent battery cells.

3. The battery module according to claim 2, characterized in that: The plurality of battery cells are connected in series through the temperature sensor and the fuse; wherein one end of the temperature sensor and the fuse is electrically connected to the negative electrode of one battery cell, and the other end is electrically connected to the positive electrode of another adjacent battery cell.

4. The battery module according to claim 2, wherein: A plurality of the battery cells are connected in parallel; a fuse is provided between every two adjacent battery cells; The two ends of the fuse module are respectively electrically connected to the positive electrodes of the two adjacent battery cells, or the two ends of the fuse module are respectively electrically connected to the negative electrodes of the two adjacent battery cells.

5. The battery module according to claim 1, wherein: The temperature sensor is fixed to the side wall of the battery core arranged along the first direction by means of thermal conductive glue.

6. The battery module according to claim 5, characterized in that: A buffer component is also provided between two adjacent battery cells.

7. The battery module according to claim 1, characterized in that: The fuse is arranged between the poles of two adjacent battery cells.

8. The battery module according to any one of claims 1 to 7, characterized in that: The temperature sensor is an NTC thermistor.

9. A battery pack, characterized in that: A battery module and a battery pack frame comprising any one of claims 1 to 8; The battery pack frame includes a first frame and a second frame arranged opposite to each other, and a connecting plate arranged between the first frame and the second frame; The first frame and the second frame are respectively arranged at opposite ends of the battery module in a second direction, wherein the second direction is perpendicular to the first direction; The first frame and the second frame are connected via the connecting plate.

10. The battery pack according to claim 9, characterized in that: The first frame is provided with a first plug-in slot, and the second frame is provided with a second plug-in slot; The connecting plate is provided with plug-in buckles at two opposite ends in the second direction; The connecting plate is respectively plugged into the first plugging slot and the second plugging slot through the plugging buckles arranged at two opposite ends in the second direction.

11. The battery pack according to claim 9, wherein: The first frame and the second frame each include a frame body and a first bending portion and a second bending portion arranged at opposite ends of the frame body in a third direction; the first bending portion and the second bending portion are bent toward a direction close to the battery module; wherein the third direction is perpendicular to the first direction and the second direction.

12. The battery pack according to claim 11, wherein: The first bending portion is movably connected to the frame body, and the first bending portion is used to cover the fuse.

13. The battery pack according to claim 11, wherein: The first frame body and / or the second frame body is a hollow structure.

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