Battery pack and vehicle

Abstract

The utility model relates to the technical field of batteries, in particular to a battery pack and a vehicle, the battery pack comprises at least two battery cell modules, a side temperature adjusting piece and a bridging piece, the bridging piece is electrically connected with at least part of the battery cell modules in the at least two battery cell modules, the side temperature adjusting piece is arranged between the two adjacent battery cell modules, and the side temperature adjusting piece is electrically connected with the bridging piece. Heat transfer is carried out between the heat exchange part of the side face temperature adjusting piece and the bridging piece, the bridging piece is cooled or heated through the heat exchange part of the side face temperature adjusting piece, natural cooling or heat exchange of the surrounding environment is not needed any more, the heat dissipation efficiency is improved, the requirement for the sectional area of the bridging piece is reduced, and weight and cost are reduced. According to the battery pack provided by the invention, as the heat exchange part of the side surface temperature adjusting piece directly or indirectly exchanges heat with the bridging piece, rapid temperature adjustment can be realized, hot corrosion to the battery cell modules due to heating of the bridging piece is reduced, the temperature difference between adjacent battery cell modules and the temperature difference between different battery cells in the same battery cell module are reduced, and the overall consistency and safety of the battery pack are improved.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a battery pack and a vehicle. Background Technology

[0002] In battery technology, especially in electric vehicles and energy storage systems, the copper busbars connecting the cell modules serve as important electrical connectors, not only carrying out current transmission but also facing significant heat generation issues.

[0003] In related technologies, the bridging copper busbar relies on natural cooling to dissipate heat, i.e., reducing temperature through heat exchange with the surrounding environment. However, to ensure sufficient heat dissipation capacity, the bridging copper busbar requires a large cross-sectional area, which directly leads to an increase in its volume, consequently increasing material costs and weight, negatively impacting the overall performance and reliability of the battery pack. Furthermore, the heat generated by the bridging copper busbar under high current operation can be conducted to adjacent battery cells, creating a thermal corrosion effect. This means the high-temperature copper busbar accelerates oxidation on the cell surface, leading to a decline in cell performance, particularly affecting the temperature difference between cells, and consequently impacting the efficiency and lifespan of the entire battery system. In addition, the temperature difference between cells may also accelerate cell aging, affecting battery performance. Utility Model Content

[0004] The purpose of this utility model is to provide a battery pack and vehicle to solve the problems in related technologies where the jumper is cooled by natural cooling, resulting in large area requirements, increased weight, and thermal corrosion of the battery cells due to heat generation, affecting the temperature difference between the battery cells.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] In a first aspect, this utility model provides a battery pack, the battery pack comprising:

[0007] At least two battery cell modules;

[0008] A jumper, the jumper being electrically connected to at least a portion of at least two of the battery cell modules;

[0009] A side temperature regulating component is disposed between two adjacent battery cell modules. The side temperature regulating component has a heat exchange section, and heat is transferred between the heat exchange section and the jumper.

[0010] In one embodiment, a heat-conducting element is provided between the side temperature regulating element and the bridging element, the heat-conducting element abutting against the heat exchange part and the bridging element.

[0011] In one embodiment, there are multiple side temperature regulating elements between two adjacent battery cell modules. The multiple side temperature regulating elements are arranged along the extension direction of the bridging element, and the heat exchange portion of the multiple side temperature regulating elements abuts against the heat conducting element.

[0012] In one embodiment, the thermally conductive element includes a thermally conductive buffer pad, which is disposed between the heat exchange section and the bridging member in an overpressure state.

[0013] In one embodiment, the thermally conductive component further includes a thermally conductive reinforcing plate disposed on the thermally conductive buffer pad.

[0014] In one embodiment, the thermally conductive reinforcing plate is disposed on the surface of the thermally conductive buffer pad facing the side temperature regulating element, and the thermally conductive reinforcing plate abuts against the heat exchange part.

[0015] In one embodiment, the jumper includes a connecting plate and an insulating layer, the insulating layer being disposed on the surface of the connecting plate, the insulating layer having an exposed area, the heat-conducting element being partially disposed within the exposed area, and the heat-conducting element abutting against the connecting plate.

[0016] In one embodiment, the jumper is provided with a groove, the heat-conducting element is disposed in the groove, and the heat-conducting element abuts against the bottom of the groove.

[0017] In one embodiment, the side temperature regulating component includes a plate body and a heat exchange block connected to each other. A medium flow channel is provided in the plate body, and the heat exchange block is disposed between the heat-conducting component and the plate body. The heat exchange block is the heat exchange part.

[0018] The plate body has a first heat exchange wall surface facing the heat conductor and a second heat exchange wall surface adjacent to the first heat exchange wall surface, and both the first heat exchange wall surface and the second heat exchange wall surface abut against the heat exchange block.

[0019] In one embodiment, the thermal conductivity of the heat-conducting element is greater than or equal to 0.2 W / (m·K).

[0020] Secondly, this utility model provides a vehicle that includes the battery pack of any of the above-mentioned solutions.

[0021] The beneficial effects of this utility model are as follows:

[0022] This invention provides a battery pack and vehicle. The battery pack uses a side-mounted temperature regulating element to cool or heat the jumpers, eliminating reliance on natural cooling or heat exchange with the surrounding environment. This significantly improves heat dissipation efficiency, reducing the cross-sectional area requirement of the jumpers, decreasing material usage, and achieving weight and cost reduction. The smaller jumper cross-sectional area also reduces space occupation and improves layout flexibility within the battery pack. Due to direct or indirect heat exchange between the side-mounted temperature regulating element and the jumpers, rapid temperature regulation is achieved, reducing thermal corrosion of the cell modules caused by jumper heating, and minimizing temperature differences between adjacent cell modules and between different cells within the same cell module. This improves the overall consistency and safety of the battery pack. The side-mounted temperature regulating element, in conjunction with the jumpers, not only solves the heat dissipation problem at high temperatures but also provides heating or insulation functions in low-temperature environments, enabling the jumpers to maintain good electrical performance over a wider temperature range. Attached Figure Description

[0023] Figure 1 This is a schematic diagram showing the positional relationship between the battery cell module, the jumper, and the side temperature regulating component in an embodiment of this utility model;

[0024] Figure 2 This is a cross-sectional view of the mating position of the jumper and the side temperature regulating component in an embodiment of this utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the heat-conducting component in an embodiment of this utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the jumper in the embodiment of this utility model;

[0027] Figure 5 This is a schematic diagram of the side temperature regulating component in an embodiment of this utility model;

[0028] Figure 6 This is a top view of the side temperature regulating component in an embodiment of this utility model.

[0029] In the picture:

[0030] 1. Battery cell module;

[0031] 2. Jumper; 21. Connecting plate; 22. Insulation layer; 221. Exposed area; 23. Groove;

[0032] 3. Side temperature control component; 31. Heat exchange section; 32. Plate body; 321. Medium flow channel; 322. First heat exchange wall surface; 323. Second heat exchange wall surface;

[0033] 4. Thermal conductive components; 41. Thermal conductive buffer pad; 42. Thermal conductive reinforcing plate. Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0035] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0038] like Figures 1 to 2 As shown, an embodiment of the first aspect of this utility model provides a battery pack, which includes a cell module 1, a jumper 2, and a side temperature regulating component 3. At least two cell modules 1 are provided. The jumper 2 is electrically connected to at least a portion of the at least two cell modules 1. The side temperature regulating component 3 is disposed between two adjacent cell modules 1 and has a heat exchange section 31. Heat exchange section 31 and jumper 2 transfer heat.

[0039] Among them, the cell module 1 is an energy storage structure. The cell module 1 may include multiple individual cells that are electrically connected to each other, or the cell module 1 may also include an integrated cell package, which can be selected according to the needs of use.

[0040] The jumper 2 is a conductor, such as a copper busbar or aluminum busbar, that connects two battery cell modules 1 to achieve an electrical connection between them. In the battery pack, the jumper 2 is used to carry large currents.

[0041] The jumper 2 is electrically connected to at least a portion of the two battery cell modules 1, meaning that the jumper 2 can make electrical connections between two adjacent or non-adjacent battery cell modules 1, or between two or more battery cell modules 1, so as to realize the series and parallel connection between the battery cell modules 1.

[0042] The side temperature regulating component 3 refers to the component used to directly regulate the temperature of the side of the battery cell module 1.

[0043] Heat transfer refers to the exchange of heat energy between the bridging member 2 and the heat exchange section 31 of the side temperature regulating member 3, which can be achieved through direct or indirect heat exchange. This transfer can be unidirectional or bidirectional, enabling rapid temperature regulation of the bridging member 2 from the hot end to the cold end, thereby achieving a cooling or heating effect. For example, the bridging member 2 can directly contact the heat exchange section 31 of the side temperature regulating member 3 for direct heat exchange, or indirect heat exchange can be achieved by providing a heat-conducting member 4 between the bridging member 2 and the heat exchange section 31 of the side temperature regulating member 3.

[0044] With this configuration, the battery pack cools or heats the jumper 2 through the heat exchange section 31 of the side temperature regulating component 3, eliminating reliance on natural cooling or heat exchange with the surrounding environment. This significantly improves heat dissipation efficiency, thereby reducing the cross-sectional area requirement of the jumper 2, reducing material usage, and achieving weight and cost reduction. The smaller cross-sectional area of ​​the jumper 2 also reduces space occupation and improves the layout flexibility within the battery pack. Due to the direct or indirect heat exchange between the heat exchange section 31 of the side temperature regulating component 3 and the jumper 2, rapid temperature regulation can be achieved, reducing thermal corrosion of the cells in the cell module 1 caused by the heat generated by the jumper 2, reducing the temperature difference between adjacent cell modules 1 and between different cells in the same cell module 1, and improving the overall consistency and safety of the battery pack. The side temperature regulating component 3 works in conjunction with the jumper component 2 to not only solve the heat dissipation problem at high temperatures, but also to provide heating or heat preservation functions in low-temperature environments. This allows the jumper component 2 to maintain good electrical performance over a wider temperature range, solving the problems in related technologies where jumpers rely on natural cooling, resulting in large area requirements, increased weight, and thermal corrosion of the battery cells caused by heat generation, which affects the temperature difference between the battery cells.

[0045] Optionally, the side temperature regulating element 3 can be, but is not limited to, a semiconductor temperature regulating element, a liquid medium temperature regulating element, or a gas medium temperature regulating element. A semiconductor temperature regulating element can be made of semiconductor material and has dual functions of cooling and heating. It utilizes the thermoelectric effect principle to control temperature by applying forward and reverse currents. A liquid medium temperature regulating element can be a temperature regulating element with an internal circulating coolant pipeline. The coolant circulates through the circulating coolant pipeline to absorb heat from the jumper 2. A gas medium temperature regulating element can be a temperature regulating element with a forced ventilation pipeline. Forced ventilation using a fan or air pump guides cool air to the ventilation pipeline on the side of the battery cell to reduce the temperature of the jumper 2.

[0046] Optionally, the side temperature regulating element 3 and the bridging element 2 can be connected by means of contact, adhesive, magnetic attraction or bolt connection, so as to realize the heat transfer between the heat exchange part 31 of the side temperature regulating element 3 and the bridging element 2.

[0047] like Figures 1 to 3 As shown, in some embodiments, a heat-conducting element 4 is provided between the side temperature regulating element 3 and the jumper 2. The heat-conducting element 4 abuts against the heat exchange portion 31 of the side temperature regulating element 3 and the jumper 2. The heat-conducting element 4 can make close contact with the surfaces of the heat exchange portion 31 of the side temperature regulating element 3 and the jumper 2, greatly reducing the air gap and thus reducing the thermal resistance. The reduction in thermal resistance allows heat to be conducted more quickly from the jumper 2 to the heat exchange portion 31 of the side temperature regulating element 3, improving the efficiency of heat transfer. When the battery pack generates heat during operation, it can more effectively remove the heat, achieving rapid cooling and reducing the thermal corrosion of the cell module 1 caused by high temperature. The heat-conducting element 4 increases the heat exchange area between the heat exchange portion 31 of the side temperature regulating element 3 and the jumper 2 by abutting, thereby significantly improving the temperature regulation rate. In scenarios requiring rapid response, such as when the battery system is discharging or charging at high power, the heat conductor 4 can quickly transfer the heat from the jumper 2 to the heat exchange section 31 of the side temperature regulating component 3, or vice versa, conduct the heat from the heat exchange section 31 of the side temperature regulating component 3 to the jumper 2. This enables real-time temperature control of the jumper 2, reduces the temperature difference between adjacent cell modules 1, and improves the overall performance and consistency of the battery system. Because the heat conductor 4 significantly improves heat transfer efficiency, the jumper 2 can be designed to be smaller, thereby reducing material usage and achieving overall weight and cost reduction in the battery pack. Furthermore, the use of the heat conductor 4 simplifies the internal structure of the battery pack, reduces the need for additional heat dissipation space, further reduces manufacturing costs and weight, and improves the economics and portability of the battery pack. By reducing temperature fluctuations in the jumper 2, the heat conductor 4 helps avoid performance degradation and safety issues in the cell module 1 caused by high temperatures or temperature differences. The side temperature regulating component 3 can effectively control the temperature of the jumper component 2, reduce thermal corrosion, extend the service life of the battery system, and at the same time reduce the uneven aging of the cell module 1 caused by temperature difference, ensuring the long-term stability and safety of the battery system.

[0048] Optionally, the heat conductor 4 can be made of a rigid material, such as a thermally conductive metal plate, which has a high thermal conductivity and facilitates efficient heat transfer after contact. Alternatively, the heat conductor 4 can also be made of a flexible material, such as a thermally conductive silicone pad, which is easy to adjust in shape and can also reduce air thermal resistance. The flexibility of the heat conductor 4 design allows the battery pack to adapt to different shapes and sizes of the jumpers 2, ensuring efficient heat exchange at various jumpers 2. The flexible heat conductor 4 is particularly suitable for components with uneven surfaces, as it can deform to fit tightly together and improve heat transfer. Alternatively, the heat conductor 4 can also be made of temperature-dependent adaptive materials such as phase change materials. The phase change material heat conductor 4 can change its physical properties at different temperatures, thereby optimizing the heat transfer path. At high temperatures, the phase change material heat conductor 4 can become more flexible to increase the contact area with the side temperature regulating element 3 and the jumper 2; at low temperatures, the phase change material heat conductor 4 can become harder to maintain structural stability. Alternatively, the heat-conducting component 4 can also be made of a superconducting material. Superconducting materials exhibit zero resistance and excellent thermal conductivity at specific temperatures, which can greatly reduce thermal resistance during heat transfer and is suitable for temperature control requirements under extreme conditions. The thickness of the heat-conducting component 4 can be greater than the distance between the side temperature regulating component 3 and the bridging component 2, so that the heat-conducting component 4 can maintain an overpressure state and ensure full contact with both the side temperature regulating component 3 and the bridging component 2.

[0049] like Figures 2 to 3As shown, in some embodiments, there are multiple side temperature regulating elements 3, which are arranged along the extension direction of the jumper 2. The heat exchange portion 31 of each of the multiple side temperature regulating elements 3 abuts against the heat conducting element 4. In this embodiment, by setting multiple side temperature regulating elements 3, the heat conducting element 4 can be connected across multiple side temperature regulating elements 3. The multiple side temperature regulating elements 3 exchange heat with the heat conducting element 4 together, which can significantly increase the heat exchange area in contact with the heat conducting element 4, thereby reducing thermal resistance and accelerating heat conduction. This allows the jumper 2 to transfer heat to the heat exchange portion 31 of the side temperature regulating elements 3 more quickly, achieving more efficient cooling or heating and accelerating the temperature regulation rate of the jumper 2. The arrangement of multiple side temperature regulating elements 3 helps to achieve a uniform temperature distribution on the jumper 2. In practical applications, the temperature of the jumper 2 may generate hot spots due to uneven current distribution. Multiple side temperature regulating elements 3 can better disperse heat, avoid local overheating, and improve the overall safety and performance of the battery. Compared to a single side temperature regulating element 3, the heat exchange section 31 of multiple side temperature regulating elements 3 works in conjunction with the heat conduction element 4, providing multiple parallel heat exchange paths and achieving higher heat dissipation efficiency. In scenarios requiring rapid response, such as high-power discharge of the battery pack, the arrangement of multiple side temperature regulating elements 3 with their heat exchange section 31 in contact with the heat conduction element 4 can more quickly regulate the temperature of the jumper 2, reducing the temperature difference between adjacent cell modules 1. Inside the battery pack, the layout of the jumper 2 can be very complex; multiple side temperature regulating elements 3 can be flexibly distributed according to actual needs, enabling effective temperature control of heat source points and improving the freedom and adaptability of system design. Furthermore, the arrangement of multiple side temperature regulating elements 3 ensures that even if one side temperature regulating element 3 fails, the others can continue to operate, maintaining basic temperature regulation functions and improving the overall reliability of the system.

[0050] In some battery packs, support beams are required between adjacent cell modules 1, separating the two modules on opposite sides. In this case, multiple side temperature regulating components 3 are installed between the adjacent cell modules 1, positioned on either side of the support beam to regulate the temperature of each module. For example, two side temperature regulating components 3 can be installed: one on one side of the support beam to regulate the temperature of one cell module 1, and the other on the other side to regulate the temperature of the other cell module 1. In this case, both side temperature regulating components 3 can be in contact with the heat-conducting component 4. Alternatively, only one side temperature regulating component 3 can be installed between adjacent cell modules 1. The two side walls of this component 3 can regulate the temperature of both cell modules 1. In this case, the heat exchange portion 31 of the component 3 simply needs to be in contact with the heat-conducting component 4.

[0051] Optionally, the heat-conducting component 4 can be a continuous elongated structure, covering multiple side temperature-regulating components 3 along the extension direction of the bridging component 2. Alternatively, the heat-conducting component 4 can be designed as multiple segments, each segment abutting against the heat exchange section 31 of a side temperature-regulating component 3, forming multiple heat exchange nodes. This better adapts to changes in the layout of the battery cell module 1 while ensuring the independence of each side temperature-regulating component 3. In this embodiment, the heat-conducting component 4 can be a continuous elongated structure.

[0052] like Figures 2 to 3 As shown, in some embodiments, the thermally conductive component 4 includes a thermally conductive buffer pad 41. The thermally conductive buffer pad 41 is disposed in an overpressure state between the heat exchange portion 31 of the side temperature regulating component 3 and the jumper 2, i.e., the thermally conductive buffer pad 41 is made of flexible material. The overpressure state of the thermally conductive buffer pad 41 ensures that it is in close contact with the surfaces of the heat exchange portion 31 of the side temperature regulating component 3 and the jumper 2, reducing air gaps, thereby reducing thermal resistance and accelerating heat transfer efficiency. Due to the flexible material of the thermally conductive buffer pad 41, it can provide buffering between the heat exchange portion 31 of the side temperature regulating component 3 and the jumper 2, reducing rigid collisions caused by vibration or impact during vehicle operation, effectively protecting the cell module 1 and the heat exchange portion 31 of the side temperature regulating component 3, and avoiding damage or performance degradation. The thermally conductive buffer pad 41 disposed in an overpressure state can be firmly fixed between the side temperature regulating component 3 and the jumper 2, maintaining good contact even in complex battery pack structures, and improving structural stability. The flexible thermally conductive buffer pad 41 can adapt to the unevenness of the heat exchange section 31 of the side temperature regulating component 3 and the surface of the bridging component 2, fill the tiny gaps, and achieve efficient heat exchange.

[0053] Optionally, the material of the thermally conductive buffer pad 41 may be, but is not limited to, thermally conductive silicone or a multi-layer composite thermally conductive structure. Thermally conductive silicone, due to its high thermal conductivity, good compressibility, and wide temperature range, can effectively reduce thermal resistance while providing cushioning protection. The multi-layer composite thermally conductive structure may include, but is not limited to, thermally conductive silicone and a magnetic material layer within the thermally conductive silicone. The magnetic material layer may be, but is not limited to, a magnetic silicone layer or a magnetic metal powder filling layer. The multi-layer design can combine the advantages of different materials, providing cushioning protection and magnetic attraction, enabling the thermally conductive buffer pad 41 to automatically align and tightly adhere between the side temperature regulating element 3 and the jumper element 2, maintaining stable contact even in a vibration environment and reducing the need for other fasteners.

[0054] like Figures 2 to 3As shown, in some embodiments, the heat-conducting component 4 further includes a heat-conducting reinforcing plate 42, which is disposed on the heat-conducting buffer pad 41. The heat-conducting reinforcing plate 42 can enhance the structural strength of the heat-conducting buffer pad 41, reduce deformation or damage caused by mechanical loads such as vibration and pressure, and maintain stable contact between the heat-conducting buffer pad 41 and the heat exchange part 31 of the side temperature regulating component 3, avoiding a decrease in heat transfer efficiency due to poor contact. The heat-conducting reinforcing plate 42 can ensure the continuity and stability of the heat conduction path, maintain good thermal conductivity even in environments with complex internal structures of the battery pack, help to distribute heat evenly, reduce local overheating, and form a heat spreader function. The design of the heat-conducting reinforcing plate 42 helps to position the heat-conducting buffer pad 41 during installation, ensuring precise alignment of the heat-conducting buffer pad 41 with the side temperature regulating component 3 and the jumper 2, simplifying the installation process and reducing the error rate.

[0055] Optionally, the thermally conductive reinforcing plate 42 can be disposed on the surface of the thermally conductive buffer pad 41 facing the side temperature regulating element 3, or on the surface of the thermally conductive buffer pad 41 facing the crossover element 2, or it can be disposed inside the thermally conductive buffer pad 41. It can strengthen and support the thermally conductive buffer pad 41, reduce the deformation of the thermally conductive buffer pad 41, ensure the strength of the thermally conductive element 4, and enable the thermally conductive element 4 to better maintain contact with the crossover element 2. This reduces the long crossover distance of the thermally conductive element 4 and the gap between the surface of the thermally conductive element 4 and the surface of the crossover element 2 caused by the deformation of the thermally conductive buffer pad 41.

[0056] Optionally, the thermal conductivity of the thermally conductive reinforcing plate 42 can be equal to or greater than that of the thermally conductive buffer pad 41. The thermally conductive reinforcing plate 42 can further reduce the thermal resistance between the bridging member 2 and the side temperature regulating member 3. The thermally conductive reinforcing plate 42 can have a high thermal conductivity, which can more effectively transfer heat from the bridging member 2 to the side temperature regulating member 3, accelerating heat exchange. For example, the thermally conductive reinforcing plate 42 can be, but is not limited to, a metal plate or graphite plate made of aluminum alloy or copper, or it can also be a composite plate of metal plate and graphite plate, which can combine the advantages of high thermal conductivity of metal and low thermal resistance of graphite to further improve thermal management efficiency. The surface of the thermally conductive reinforcing plate 42 can be designed with a corrugated or other raised structure to increase the heat conduction area. The thermally conductive reinforcing plate 42 and the thermally conductive buffer pad 41, as well as the thermally conductive reinforcing plate 42 and the side temperature regulating member 3, can be fitted together by contact, adhesion, or magnetic attraction to ensure a tight fit.

[0057] Optionally, the thickness of the thermally conductive reinforcing plate 42 is greater than or equal to 0.3 mm, which facilitates providing sufficient reinforcement support for the thermally conductive buffer pad 41 and avoids increasing the risk of overall deformation of the thermally conductive component 4 if the thickness of the thermally conductive reinforcing plate 42 is too small. Optionally, the thickness of the thermally conductive reinforcing plate 42 can be selected as 0.3 mm, which can basically ensure the support for the thermally conductive buffer pad 41 and has a small volume. Alternatively, the thickness of the thermally conductive reinforcing plate 42 can be selected as 0.6 mm, which can further strengthen the support for the thermally conductive buffer pad 41 and reduce the risk of deformation of the thermally conductive component 4.

[0058] like Figures 2 to 3 As shown, in some embodiments, a thermally conductive reinforcing plate 42 is disposed on the surface of the thermally conductive buffer pad 41 facing the side temperature regulating member 3. The thermally conductive reinforcing plate 42 abuts against the heat exchange portion 31 of the side temperature regulating member 3. This arrangement provides overall support at the bottom of the thermally conductive buffer pad 41, helping to maintain the structural stability of the thermally conductive buffer pad 41. Especially under vibration or pressure inside the battery pack, it can reduce the deformation of the thermally conductive buffer pad 41 and ensure continuous close contact between the thermally conductive buffer pad 41 and the jumper 2. The close contact between the thermally conductive reinforcing plate 42 and the side temperature regulating member 3 reduces thermal resistance and facilitates improved heat transfer rate for effective cooling.

[0059] like Figures 2 to 4 As shown, in some embodiments, the jumper 2 includes a connecting plate 21 and an insulating layer 22. The insulating layer 22 is disposed on the surface of the connecting plate 21, and an exposed area 221 is provided on the insulating layer 22. The heat-conducting element 4 is partially disposed within the exposed area 221, and the heat-conducting element 4 abuts against the connecting plate 21. The insulating layer 22 enables electrical isolation between the connecting plate 21 and surrounding structural components, reducing the risk of short circuits. At the same time, the exposed area 221 ensures that the critical path of heat transfer is not affected by electrical isolation. By providing the exposed area 221 on the insulating layer 22, the heat-conducting element 4 can directly exchange heat with the connecting plate 21, thereby significantly reducing the additional thermal resistance introduced by the insulating layer 22, accelerating heat conduction, and improving cooling efficiency. The arrangement of the exposed area 221 on the insulation layer 22 can be optimized according to the heat source distribution of the connecting plate 21 to ensure good contact between the heat source point and the heat conductor 4, while not affecting the insulation performance of other non-heat source areas. It can also further reduce the cross-sectional area requirement of the jumper 2, thereby reducing material costs and weight, and helping to improve the overall performance and economy of the battery pack.

[0060] Optionally, the connecting plate 21 may be, but is not limited to, a copper plate or an aluminum plate, and the connecting plate 21 may also be designed as a long strip structure. The insulating layer 22 may be, but is not limited to, a polyimide film or an epoxy resin layer.

[0061] Optionally, the exposed area 221 can be opened to the bottom edge of the connecting plate 21, and the exposed surface of the connecting plate 21 within the exposed area 221 is in contact with the heat-conducting element 4, which can increase the contact area between the connecting plate 21 and the heat-conducting element 4.

[0062] like Figures 2 to 4 As shown, in some embodiments, the jumper 2 is provided with a groove 23, and the heat-conducting component 4 is disposed in the groove 23, with the heat-conducting component 4 abutting against the bottom of the groove 23. In this embodiment, by providing the groove 23, a receiving position can be provided for the heat-conducting component 4, allowing the heat-conducting component 4 to have sufficient thickness space to ensure the buffering performance of the heat-conducting component 4, and also to reduce positional interference between the installation positions of the heat-conducting component 4 and the jumper 2 and the installation positions of the jumper 2 and the battery cell module 1. The groove 23 can also be used to install and position the heat-conducting component 4, and after installation, it can also reduce the displacement of the heat-conducting component 4 to a certain extent, so as to ensure close contact between the heat-conducting component 4 and the jumper 2.

[0063] The groove 23 can be an open groove, and the bridging member 2 can be bent to form an open groove with the same wall thickness. The bridging member 2 is designed as a connecting plate 21 and an insulating layer 22. When the insulating layer 22 is provided with an exposed area 221, the exposed area 221 can be formed on part or all of the bottom of the groove 23, so that while the groove 23 limits the heat-conducting element 4, the connecting plate 21 can also directly exchange heat with the heat-conducting element 4 at the bottom of the groove 23.

[0064] like Figure 2 as well as Figures 5 to 6As shown, in some embodiments, the side temperature regulating component 3 includes a plate body 32 and a heat exchange block connected to each other. A medium flow channel 321 is provided inside the plate body 32, and the heat exchange block is disposed between the heat conduction component 4 and the plate body 32. In this embodiment, the heat exchange block can serve as the heat exchange part 31 of the side temperature regulating component 3. The plate body 32 has a first heat exchange wall surface 322 facing the heat conduction component 4 and a second heat exchange wall surface 323 adjacent to the first heat exchange wall surface 322. The second heat exchange wall surface 323 can be a side wall surface adjacent to the first heat exchange wall surface 322, or it can be multiple side walls adjacent to the first heat exchange wall surface 322. Both the first heat exchange wall surface 322 and the second heat exchange wall surface 323 can abut against the heat exchange block. This configuration, with the heat exchange block abutting against the jumper 2 and the plate body 32, increases the contact area, reduces air gaps and thermal resistance, thereby improving heat transfer efficiency. This allows heat to be rapidly transferred from the jumper 2 to the medium flow channel 321 within the plate body 32, where it is carried away by the cooling medium, effectively reducing the temperature of the jumper 2 and minimizing the effects of thermal corrosion and temperature differences. The medium flow channel 321 within the plate body 32 allows for the circulation of cooling media, such as coolant or gas. The first heat exchange wall 322 and the second heat exchange wall 323, which exchange heat with the heat exchange block, distribute heat to the medium within the medium flow channel 321, ensuring efficient cooling and thus improving the overall heat dissipation capacity of the side temperature regulating component 3. The heat exchange block not only acts as a heat transfer medium but also provides additional support between the heat conductor 4 and the plate body 32, increasing the connection area, enhancing structural stability, reducing relative displacement between the jumper 2 and the side temperature regulating component 3, preventing poor component contact due to temperature changes or vibration, and ensuring the reliability of the side temperature regulating component 3 during long-term operation. The contact between the heat exchange block and the first heat exchange wall 322 and the second heat exchange wall 323 helps to achieve thermal balance of the side temperature regulating element 3. Even if the temperature distribution of the bridging element 2 is uneven, it is still beneficial to distribute the heat evenly to the medium flow channel 321 in the plate body 32 through the heat exchange block.

[0065] Optionally, the heat exchange block can be, but is not limited to, a square or cylindrical block, and a connecting groove can be provided at the bottom of the heat exchange block. The connecting groove can be connected to the plate body 32 to improve the connection fit and structural stability. The inner wall of the heat exchange block and / or the first heat exchange wall surface 322 and the second heat exchange wall surface 323 of the plate body 32 can have a thermally conductive structural adhesive layer. The inner wall of the heat exchange block and the first heat exchange wall surface 322 and the second heat exchange wall surface 323 of the plate body 32 can be abutted and bonded together through the thermally conductive structural adhesive layer to reduce the gap between them. The heat exchange block can be, but is not limited to, a porous metal material such as aluminum alloy, which has a high thermal conductivity and can improve heat transfer efficiency. The first heat exchange wall surface 322 can be an arc surface, and the joint between the first heat exchange wall surface 322 and the second heat exchange wall surface 323 can be a smooth curved transition, which can not only increase the contact area between the plate body 32 and the heat exchange block, but also reduce stress concentration.

[0066] In some other embodiments, the side temperature regulating element 3 may also consist of only a single plate body 32, the surface of which can directly contact the heat-conducting element 4 or the bridging element 2 for direct heat exchange, reducing the heat transfer path and improving heat transfer efficiency.

[0067] In some embodiments, the thermal conductivity of the heat-conducting component 4 is greater than or equal to 0.2 W / (m·K). Thermal conductivity is a physical parameter that measures the thermal conductivity of a material. The higher the thermal conductivity, the stronger the material's ability to transfer heat and the lower the thermal resistance. A thermal conductivity of 0.2 W / (m·K) for the heat-conducting component 4 ensures sufficient heat transfer capacity without significantly increasing cost or complexity due to excessively high thermal conductivity. Furthermore, this thermal conductivity range is sufficient to meet the thermal management needs of most battery packs, effectively controlling temperature and reducing the effects of thermal corrosion and temperature differences. Using a high thermal conductivity for the heat-conducting component 4 reduces thermal resistance, allowing heat to be transferred more smoothly through it, reducing the time heat remains within the component. This enables faster and more efficient heat transfer from heat sources such as the jumper 2 to temperature-regulating positions such as the side temperature-regulating component 3, preventing localized overheating and reducing the temperature difference between the cell modules 1. A thermally conductive component 4 with a thermal conductivity greater than or equal to 0.2 W / (m·K) allows for smaller dimensions or thicknesses, providing greater design freedom for the internal layout of the battery pack. This facilitates compact structural designs while reducing weight and cost. When the thermal conductivity of the thermally conductive component 4 is less than 0.2 W / (m·K), the material's heat transfer efficiency decreases significantly, heat remains within the component 4 for a longer period, leading to increased thermal resistance and difficulty in rapidly reducing the temperature of the heat source, thus affecting the thermal management and performance of the battery pack. Furthermore, to compensate for the low thermal conductivity, thicker or larger thermally conductive components 4 may be required, which not only increases cost but also occupies internal space in the battery pack, impacting the overall design and weight. A thermal conductivity of 0.2 W / (m·K) or greater achieves a good balance between efficiency, cost, and design flexibility, suitable for the thermal management needs of most battery packs.

[0068] Optionally, the thermal conductivity of the heat-conducting component 4 can be selected as 0.2 W / (m·K), 0.8 W / (m·K), or 1 W / (m·K).

[0069] When the thermal conductivity of the heat-conducting component 4 is 0.2 W / (m·K), it can still effectively absorb and transfer heat from heat sources such as the bridging component 2. Although its heat transfer efficiency is lower compared to materials with higher thermal conductivity, it is sufficient to meet light to moderate thermal management needs. Moreover, some materials are more economical at lower thermal conductivity, and selecting the heat-conducting component 4 with this thermal conductivity can also reduce material costs.

[0070] When the thermal conductivity of the heat-conducting component 4 is 0.8 W / (m·K), its heat transfer efficiency is further enhanced, enabling it to respond quickly to temperature changes of the heat source, effectively reduce thermal resistance, and reduce the temperature of the bridging component 2. The heat-conducting component 4 with this thermal conductivity can be designed to be thinner and lighter, which helps to reduce the weight and cost of the battery pack.

[0071] When the thermal conductivity of the heat-conducting component 4 is 1W / (m·K), it has a high heat transfer capability, which can transfer heat from the heat source more quickly, achieve faster cooling, and ensure the stability and safety of the battery pack under high load or extreme conditions.

[0072] like Figures 1 to 3 As shown, an embodiment of the second aspect of this utility model provides a vehicle including the battery pack of any of the above embodiments. The side temperature regulating element 3 in the battery pack can effectively regulate the temperature of the jumper 2, ensuring the stability and reliability of the battery pack under various operating conditions. By reducing the temperature difference between cell modules 1 and between different cells in the same cell module 1, the performance degradation and lifespan of the cells caused by overheating or large temperature differences are avoided, improving the overall performance and safety of the battery pack. It can also reduce the cross-sectional area and total weight of the jumper 2, thereby reducing the weight of the entire battery pack, increasing the vehicle's driving range and reducing energy consumption, and also reducing the manufacturing cost of the battery pack.

[0073] Since the vehicle of this utility model embodiment includes the battery pack described above, it has all the advantages and beneficial effects of the above embodiments, which will not be repeated here.

[0074] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A battery pack, characterized in that, The battery pack includes: At least two battery cell modules (1); A jumper (2) is electrically connected to at least a portion of at least two of the battery cell modules (1); Side temperature regulating component (3) is disposed between two adjacent battery cell modules (1). The side temperature regulating component (3) has a heat exchange part (31) and heat transfer is performed between the heat exchange part (31) and the jumper (2).

2. The battery pack according to claim 1, characterized in that, A heat-conducting element (4) is provided between the side temperature regulating element (3) and the bridging element (2). The heat-conducting element (4) abuts against the heat exchange part (31) and the bridging element (2).

3. The battery pack according to claim 2, characterized in that, There are multiple side temperature regulating components (3) between two adjacent battery cell modules (1). The multiple side temperature regulating components (3) are arranged along the extension direction of the jumper (2). The heat exchange part (31) of the multiple side temperature regulating components (3) abuts against the heat conduction component (4).

4. The battery pack according to claim 2 or 3, characterized in that, The heat-conducting component (4) includes a heat-conducting buffer pad (41), which is disposed between the heat exchange section (31) and the bridging component (2) in an overpressure state.

5. The battery pack according to claim 4, characterized in that, The heat-conducting component (4) also includes a heat-conducting reinforcing plate (42), which is disposed on the heat-conducting buffer pad (41).

6. The battery pack according to claim 5, characterized in that, The thermally conductive reinforcing plate (42) is disposed on the surface of the thermally conductive buffer pad (41) facing the side temperature regulating member (3), and the thermally conductive reinforcing plate (42) abuts against the heat exchange part (31).

7. The battery pack according to claim 2 or 3, characterized in that, The jumper (2) includes a connecting plate (21) and an insulating layer (22). The insulating layer (22) is disposed on the surface of the connecting plate (21). An exposed area (221) is provided on the insulating layer (22). The heat-conducting element (4) is partially disposed in the exposed area (221) and abuts against the connecting plate (21).

8. The battery pack according to claim 2 or 3, characterized in that, The jumper (2) is provided with a groove (23), and the heat-conducting component (4) is disposed in the groove (23), and the heat-conducting component (4) abuts against the bottom of the groove (23).

9. The battery pack according to claim 2 or 3, characterized in that, The side temperature regulating component (3) includes a plate body (32) and a heat exchange block connected to each other. A medium flow channel (321) is provided inside the plate body (32). The heat exchange block is disposed between the heat-conducting component (4) and the plate body (32). The heat exchange block is the heat exchange part (31). The plate body (32) has a first heat exchange wall surface (322) facing the heat conductor (4) and a second heat exchange wall surface (323) adjacent to the first heat exchange wall surface (322). Both the first heat exchange wall surface (322) and the second heat exchange wall surface (323) abut against the heat exchange block.

10. The battery pack according to claim 2 or 3, characterized in that, The thermal conductivity of the heat-conducting component (4) is greater than or equal to 0.2 W / (m·K).

11. A vehicle, characterized in that, The battery pack includes any one of claims 1-10.

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