Battery and electric device

Abstract

The present application relates to a battery and an electric device. The battery comprises a heat exchange base plate, at least two heat exchange side plate groups, and at least two battery units; all the heat exchange side plate groups and all the battery units are mounted on the top side of the heat exchange base plate, all the heat exchange side plate groups are arranged in the length direction of the heat exchange base plate, and the heat exchange side plate groups have one-to-one correspondence to the battery units; each heat exchange side plate group comprises at least two heat exchange side plates, all the heat exchange side plates of the same heat exchange side plate group are arranged at intervals in the width direction of the heat exchange base plate, and every two adjacent heat exchange side plates in the same heat exchange side plate group and the heat exchange base plate together define a heat exchange space; each battery unit comprises at least one battery module; in the corresponding heat exchange side plate groups and the battery units, the battery modules are mounted in the heat exchange spaces in a one-to-one correspondence manner, and each battery module performs heat exchange by means of the corresponding heat exchange side plates and the heat exchange base plate that define the heat exchange space where the battery module is located. The battery and the electric device provided by the present application can increase the charging and discharging rates, and improve the heating or cooling effect.

Description

A battery and an electrical device

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese Patent Application No. 202422740041.6, filed on November 8, 2024, entitled "A Battery and an Electric Device". Technical Field

[0003] This application relates to the field of battery technology, specifically to a battery and an electrical device. Background Technology

[0004] Batteries, as core components for energy storage and conversion, are widely used in various fields such as new energy vehicles, energy storage power stations, ships, and spacecraft. Taking the application of batteries in commercial vehicles as an example, the charge and discharge rates of batteries in current mainstream commercial vehicles are relatively low, and their heating and cooling effects are poor, resulting in inadequate temperature control performance and a poor user experience. Summary of the Invention

[0005] Therefore, it is necessary to provide a battery and electrical device that can improve the charge / discharge rate and enhance the heating or cooling effect to address the above problems.

[0006] A battery includes a heat exchange base plate, at least two heat exchange side plate assemblies and at least two battery cells. All heat exchange side plate assemblies and all battery cells are installed on the top side of the heat exchange base plate along the thickness direction of the heat exchange base plate. All heat exchange side plate assemblies are arranged along the length direction of the heat exchange base plate, and at least two heat exchange side plate assemblies correspond one-to-one with at least two battery cells.

[0007] The heat exchange side plate group includes at least two heat exchange side plates. All heat exchange side plates in the same heat exchange side plate group are arranged at intervals along the width direction of the heat exchange base plate, and each pair of adjacent heat exchange side plates in the same heat exchange side plate group and the heat exchange base plate together define a heat exchange space.

[0008] The battery unit includes at least one battery module. In the corresponding heat exchange side plate group and battery unit, the battery modules are installed one-to-one in the heat exchange space, and the battery modules exchange heat through the heat exchange side plate and heat exchange bottom plate that define the heat exchange space in which they are located.

[0009] In some embodiments, the battery further includes a heat exchange pipe assembly, which corresponds one-to-one with the battery cell and the heat exchange side plate assembly. The heat exchange pipe assembly is used to circulate heat exchange fluid into and out of all heat exchange side plates of the corresponding heat exchange side plate assembly.

[0010] There are two heat exchange side plate assemblies, two battery units, and two heat exchange pipe assemblies, with the two heat exchange pipe assemblies located between the two heat exchange side plate assemblies.

[0011] In some embodiments, the heat exchange side plate has a first flow channel for supplying heat exchange fluid; the heat exchange side plates in the same heat exchange side plate group are arranged in pairs to form a heat exchange side plate unit.

[0012] The heat exchange piping assembly includes a liquid inlet piping unit and a liquid return piping unit, and each liquid inlet piping unit corresponds one-to-one with a heat exchange side plate unit.

[0013] The liquid inlet pipeline unit includes a liquid inlet pipe and a liquid distribution pipe connected together. The two opposite ends of the liquid distribution pipe are respectively connected to the liquid inlets of the two first flow channels in the corresponding heat exchange side plate unit. The liquid return pipeline unit includes a liquid return pipe and a liquid collection pipe connected together. The two opposite ends of the liquid collection pipe are respectively connected to the liquid outlets of the two first flow channels in the corresponding heat exchange side plate unit.

[0014] In some embodiments, the heat exchange base plate has a second flow channel for supplying heat exchange fluid flow.

[0015] In the inlet pipe unit and return pipe unit corresponding to the same heat exchange side plate unit, both the inlet pipe and the return pipe are connected to the second flow channel. In the flow direction of the heat exchange fluid in the second flow channel, the position where the inlet pipe is connected to the second flow channel is upstream of the position where the return pipe is connected to the second flow channel.

[0016] In some embodiments, the system further includes an inlet connector and an outlet connector, which are disposed on the heat exchange base plate and are both connected to the second flow channel.

[0017] The inlet and outlet connectors are located on one side of one heat exchange side plate group facing away from the other heat exchange side plate group, and the inlet and outlet connectors are arranged at opposite ends of the heat exchange base plate along the width direction of the heat exchange base plate.

[0018] In some embodiments, within the same heat exchange pipe group, the orthographic projections of all inlet pipes in the width direction of the heat exchange base plate completely overlap, the orthographic projections of all distribution pipes in the width direction of the heat exchange base plate completely overlap, the orthographic projections of all return pipes in the width direction of the heat exchange base plate completely overlap, and the orthographic projections of all manifolds in the width direction of the heat exchange base plate completely overlap; and / or

[0019] In the inlet pipe unit and return pipe unit connected to the same heat exchange side plate unit, the orthogonal projections of the distributor pipe and the collector pipe in the thickness direction of the heat exchange base plate completely overlap.

[0020] In some embodiments, in the inlet pipe unit, the inlet pipe is located on the side of the distributor pipe facing the heat exchange side plate to which it is connected; in the return pipe unit, the return pipe is located on the side of the manifold pipe facing the heat exchange side plate to which it is connected.

[0021] In some embodiments, the battery module is connected to a heat exchange side plate and a heat exchange base plate that define the heat exchange space in which it resides via thermally conductive adhesive.

[0022] In some embodiments, the battery module is detachably connected to the heat exchange base plate.

[0023] An electrical device comprising a battery as described in any of the above embodiments.

[0024] In the aforementioned battery and electrical device, each pair of adjacent heat exchange side plates and the heat exchange base plate in the same heat exchange side plate group jointly define a heat exchange space. Battery modules are installed one-to-one within this heat exchange space, and the battery modules exchange heat through the heat exchange side plates and the heat exchange base plate that define their respective heat exchange spaces. In this way, the heat exchange base plate can be located at the bottom of the battery module and heat or cool it, while the two adjacent heat exchange side plates can be located on either side of the battery module and heat or cool it, thus achieving the heating or cooling of the battery module. This design increases the heat exchange area of ​​the battery module, which is beneficial for rapid heating or cooling, resulting in better heating and cooling effects, good temperature control performance, and a superior user experience. Furthermore, by setting at least two battery cells, the battery has a high energy storage capacity, long driving time, and a high charge / discharge rate. Attached Figure Description

[0025] Figure 1 is a schematic diagram of the overall structure of the battery in one embodiment of this application;

[0026] Figure 2 is an enlarged schematic diagram of a local structure A in the battery shown in Figure 1;

[0027] Figure 3 is a top view of the battery shown in Figure 1;

[0028] Figure 4 is an enlarged schematic diagram of a local structure B in the battery shown in Figure 3;

[0029] Figure 5 is a schematic diagram of the structure of the battery shown in Figure 1 after removing one battery cell, the heat exchange side plate assembly, and the heat exchange pipe assembly.

[0030] Figure 6 is an enlarged schematic diagram of a local structure C in the battery shown in Figure 5;

[0031] Figure 7 is a front view of the battery shown in Figure 1;

[0032] Figure 8 is a right view of the battery shown in Figure 7.

[0033] Reference numerals: 100, Battery; 10, Heat exchange base plate; 20, Heat exchange side plate assembly; 30, Battery cell; 40, Heat exchange pipe assembly; 50, Water inlet connector; 60, Water outlet connector; 70, Thermal conductive adhesive; 21, Heat exchange side plate unit; 211, Heat exchange side plate; 211a, First heat exchange side plate; 211b, Second heat exchange side plate; 211c, Third heat exchange side plate; 211d, Fourth heat exchange side plate; 31, Battery module; 311, End plate; 312, Battery array; 312a, Battery cell; 41, Liquid inlet pipe unit; 411, Liquid inlet pipe; 412, Liquid distribution pipe; 42, Liquid return pipe unit; 421, Liquid return pipe; 422, Liquid collection pipe; X, Length direction; Y, Width direction; Z, Thickness direction. Detailed Implementation

[0034] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0035] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, 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, and therefore should not be construed as a limitation of this application.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0037] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., 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, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0038] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0039] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0040] Currently, judging from market trends, battery applications are becoming increasingly widespread. Batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of battery applications, market demand is also constantly increasing.

[0041] Taking batteries used in electric vehicles, such as commercial vehicles, as an example, the charging and discharging rates of batteries in existing mainstream commercial vehicles are low, and the heating or cooling effects are poor, resulting in poor temperature control performance and a poor user experience.

[0042] Please refer to Figures 1 to 4, and Figure 7. To alleviate the above-mentioned problems, this application provides a battery 100, which includes a heat exchange base plate 10, at least two heat exchange side plate assemblies 20, and at least two battery cells 30. All heat exchange side plate assemblies 20 and all battery cells 30 are mounted on the top side of the heat exchange base plate 10 along the thickness direction Z. All heat exchange side plate assemblies 20 are arranged along the length direction X of the heat exchange base plate 10, and at least two heat exchange side plate assemblies 20 correspond one-to-one with at least two battery cells 30. Each heat exchange side plate assembly 20 includes at least two heat exchange side plates 211. All heat exchange side plates 211 of the same heat exchange side plate assembly 20 are spaced apart along the width direction Y of the heat exchange base plate 10, and each pair of adjacent heat exchange side plates 211 in the same heat exchange side plate assembly 20, together with the heat exchange base plate 10, defines a heat exchange space. The battery unit 30 includes at least one battery module 31. In the corresponding heat exchange side plate group 20 and battery unit 30, the battery module 31 is installed in the heat exchange space in a one-to-one correspondence, and the battery module 31 exchanges heat through the heat exchange side plate 211 and heat exchange base plate 10 that define the heat exchange space in which it is located.

[0043] The heat exchange side plate 211 has a first flow channel, and the heat exchange base plate 10 has a second flow channel. Both the first and second flow channels are used for the flow of heat exchange fluid. The heat exchange fluid can be water, alcohol, or other fluids. Under low-temperature conditions, such as in winter, the temperature of the heat exchange fluid is higher than that of the battery module 31, and the heat exchange fluid can provide heat to the battery module 31 to heat it. Under high-temperature conditions, such as in summer, the temperature of the heat exchange fluid is lower than that of the battery module 31, and the heat exchange fluid can absorb heat from the battery module 31 to cool it, thereby achieving temperature control of the battery module 31 with uniform temperature change and good temperature control effect.

[0044] In the same heat exchange side plate assembly 20, every two adjacent heat exchange side plates 211 and the heat exchange base plate 10 together define a heat exchange space. Battery modules 31 are installed one-to-one within this heat exchange space, and the battery modules 31 exchange heat through the heat exchange side plates 211 and the heat exchange base plate 10 that define their respective heat exchange spaces. Thus, the heat exchange base plate 10 can be located at the bottom of the battery module 31 and heat or cool it, while the two adjacent heat exchange side plates 211 can be located on either side of the battery module 31 and heat or cool it, thereby achieving the heating or cooling of the battery module 31. This design increases the heat exchange area of ​​the battery module 31, which is beneficial for rapid heating or cooling of the battery module 31, resulting in better heating and cooling effects, good temperature control performance, and a high user experience.

[0045] Furthermore, by incorporating at least two battery cells 30, the battery 100 achieves high energy storage capacity, long battery life, and a high charge / discharge rate. Moreover, by integrating at least two battery cells 30 into a single battery 100, all battery cells 30 within the battery 100 can share some mechanical components (e.g., housing), electrical components (e.g., temperature sensors), and a thermal management system. This reduces the need for mechanical components, electrical components, and a thermal management system while still achieving a large energy storage capacity, resulting in a high degree of integration.

[0046] Referring to Figures 1 to 6, in some embodiments, the battery 100 further includes a heat exchange pipe assembly 40. The heat exchange pipe assembly 40 corresponds one-to-one with the battery unit 30 and the heat exchange side plate assembly 20. The heat exchange pipe assembly 40 is used to circulate and output heat exchange fluid into all the heat exchange side plates 211 of the corresponding heat exchange side plate assembly 20, allowing the heat exchange fluid to circulate within the heat exchange base plate 10 and each heat exchange side plate 211, resulting in better heating or cooling effects. There are two heat exchange side plate assemblies 20, two battery units 30, and two heat exchange pipe assemblies 40, positioned between the two heat exchange side plate assemblies 20. This design results in a compact layout of the battery unit 30, the heat exchange side plate assembly 20, and the heat exchange pipe assembly 40, which is beneficial for improving space utilization.

[0047] In some embodiments, heat exchange side plates 211 in the same heat exchange side plate group 20 are arranged in pairs to form heat exchange side plate units 21; the heat exchange pipe group 40 includes an inlet pipe unit 41 and a return pipe unit 42, and the inlet pipe unit 41 and the return pipe unit 42 are each corresponding to a heat exchange side plate unit 21; the inlet pipe unit 41 includes an inlet pipe 411 and a distribution pipe 412 connected together, and the two opposite ends of the distribution pipe 412 are respectively connected to the inlet ports of two first flow channels in the corresponding heat exchange side plate unit 21; the return pipe unit 42 includes a return pipe 421 and a collection pipe 422 connected together, and the two opposite ends of the collection pipe 422 are respectively connected to the outlet ports of two first flow channels in the corresponding heat exchange side plate unit 21.

[0048] Taking Figure 4 as an example, the battery unit 30 includes three battery modules 31, and the heat exchange side plate group 20 includes four heat exchange side plates 211. The four heat exchange side plates 211 and the heat exchange base plate 10 form three heat exchange spaces, and each heat exchange space is equipped with one battery module 31. In this embodiment, the heat exchange pipe group 40 includes two liquid inlet pipe units 41 and two liquid return pipe units 42. The four heat exchange side plates 211 are defined as the first heat exchange side plate 211a, the second heat exchange side plate 211b, the third heat exchange side plate 211c, and the fourth heat exchange side plate 211d. The first heat exchange side plate 211a and the second heat exchange side plate 211b form one heat exchange side plate unit 21, and the third heat exchange side plate 211c and the fourth heat exchange side plate 211d form another heat exchange side plate unit 21. One end of the liquid distribution pipe 412 of one of the liquid inlet pipe units 41 is connected to the liquid inlet of the first flow channel in the first heat exchange side plate 211a, and the other end of the liquid distribution pipe 412 of one of the liquid inlet pipe units 41 is connected to the liquid inlet of the first flow channel in the second heat exchange side plate 211b. One end of the liquid return pipe 421 of one of the liquid return pipe units 42 is connected to the liquid outlet of the first flow channel in the first heat exchange side plate 211a, and the other end of the liquid return pipe 421 of one of the liquid return pipe units 42 is connected to the liquid return outlet of the first flow channel in the second heat exchange side plate 211b. One end of the liquid distribution pipe 412 of another liquid inlet pipe unit 41 is connected to the liquid inlet of the first flow channel in the third heat exchange side plate 211c, and the other end of the liquid distribution pipe 412 of another liquid inlet pipe unit 41 is connected to the liquid inlet of the first flow channel in the fourth heat exchange side plate 211d. One end of the liquid return pipe 421 of another liquid return pipe unit 42 is connected to the liquid outlet of the first flow channel in the third heat exchange side plate 211c, and the other end of the liquid return pipe 421 of another liquid return pipe unit 42 is connected to the liquid return outlet of the first flow channel in the fourth heat exchange side plate 211d.

[0049] In actual operation, the heat exchange fluid flows in through the inlet pipe 411 and is split at the distributor pipe 412 into the first flow channels of the two heat exchange side plates 211 connected to the distributor pipe 412. After absorbing or releasing heat in the two heat exchange side plates 211, it flows out through the first flow channels of the two heat exchange side plates 211, then merges into the liquid collection pipe 422, and finally flows out through the return pipe 421.

[0050] In this embodiment, a liquid inlet pipe unit 41 and a liquid return pipe unit 42 can simultaneously circulate and output heat exchange fluid to two adjacent heat exchange side plates 211, reducing the design of pipes and the space occupied by pipes, resulting in high integration, large space utilization, and reduced manufacturing costs.

[0051] In some embodiments, in the inlet pipe unit 41 and return pipe unit 42 corresponding to the same heat exchange side plate unit 21, both the inlet pipe 411 and the return pipe 421 are connected to the second flow channel, and in the flow direction of the heat exchange fluid in the second flow channel, the position where the inlet pipe 411 is connected to the second flow channel is located upstream of the position where the return pipe 421 is connected to the second flow channel.

[0052] Taking the battery 100 under high-temperature conditions as an example, in the flow direction of the second flow channel, the heat exchange time of the heat exchange fluid flowing upstream is shorter than that of the heat exchange fluid flowing downstream. Therefore, the temperature of the heat exchange fluid at the upstream position is lower than that at the downstream position. Thus, when the heat exchange fluid at the upstream position is introduced into the first flow channel of the heat exchange side plate 211 through the inlet pipe 411, the heat exchange fluid still maintains a lower temperature and can cool the battery module 31 from the side, resulting in better cooling. Afterwards, the first heat exchange fluid flows back into the second flow channel through the return pipe 421, merges with the heat exchange fluid in the second flow channel, and continues to flow.

[0053] By using the inlet pipe unit 41 and the return pipe unit 42 to pass the heat exchange fluid in the heat exchange base plate 10 into the heat exchange side plate 211, the pipe design can be simplified and the flow path of the heat exchange fluid can be reduced. This can reduce manufacturing costs and improve space utilization, while also providing better heat exchange effect.

[0054] Of course, in some other embodiments, the inlet pipe 411 and the return pipe 421 may also be independent of the second flow channel. Specifically, the inlet pipe 411 and the return pipe 421 are connected to an external heat exchange fluid source. The heat exchange fluid source directly inputs heat exchange fluid into the first flow channel through the inlet pipe 411, and after heat exchange, it flows directly back to the heat exchange fluid source through the return pipe 421.

[0055] Please refer to Figures 7 and 8. In some embodiments, the battery 100 further includes a water inlet connector 50 and a water outlet connector 60, which are disposed on the heat exchange base plate 10 and are both connected to the second flow channel.

[0056] Both the inlet connector 50 and the outlet connector 60 are connected to an external heat exchange fluid source. The heat exchange fluid source inputs heat exchange fluid into the second flow channel through the inlet connector 50. After heat exchange within the heat exchange base plate 10, the heat exchange fluid returns to the heat exchange fluid source through the outlet connector 60. By designing the inlet connector 50 and the outlet connector 60, the circulation of heat exchange fluid between the heat exchange base plate 10 and the heat exchange fluid source can be achieved, resulting in good heat exchange performance.

[0057] Furthermore, in some embodiments, the inlet connector 50 and the outlet connector 60 are located on the side of one heat exchange side plate assembly 20 facing away from the other heat exchange side plate assembly 20, and the inlet connector 50 and the outlet connector 60 are arranged at opposite ends of the heat exchange base plate 10 along the width direction Y, so that the installation of the inlet connector 50 and the outlet connector 60 does not interfere with the installation of the battery unit 30 and the heat exchange side plate assembly 20, and the installation is convenient.

[0058] Referring to Figures 1 to 7, in some embodiments, within the same heat exchange pipe assembly 40, the orthographic projections of all inlet pipes 411 in the width direction Y of the heat exchange base plate 10 completely overlap, the orthographic projections of all distribution pipes 412 in the width direction Y of the heat exchange base plate 10 completely overlap, the orthographic projections of all return pipes 421 in the width direction Y of the heat exchange base plate 10 completely overlap, and the orthographic projections of all manifolds 422 in the width direction Y of the heat exchange base plate 10 completely overlap; and / or, in the inlet pipe unit 41 and return pipe unit 42 connected to the same heat exchange side plate unit 21, the orthographic projections of the distribution pipe 412 and the manifold 422 in the thickness direction Z of the heat exchange base plate 10 completely overlap. Thus, the heat exchange pipe assembly 40 occupies less space and has a high space utilization rate.

[0059] In some embodiments, in the liquid inlet pipe unit 41, the liquid inlet pipe 411 is located on the side of the liquid distributor pipe 412 facing the heat exchange side plate 211 to which it is connected; in the liquid return pipe unit 42, the liquid return pipe 421 is located on the side of the liquid collector pipe 422 facing the heat exchange side plate 211 to which it is connected. This design can improve the compactness of the layout of the liquid inlet pipe unit 41 and the liquid return pipe unit 42, and improve the space utilization of the battery 100.

[0060] In some embodiments, the battery module 31 is connected to the heat exchange side plate 211 and the heat exchange base plate 10 that define the heat exchange space in which it resides via thermally conductive adhesive 70. That is, thermally conductive adhesive 70 is provided between the battery module 31 and the heat exchange base plate 10, and between the battery module 31 and the adjacent heat exchange side plate 211. The thermally conductive adhesive 70 has a thermal conductivity function, enabling heat conduction between the heat exchange base plate 10 and the battery module 31, and between the heat exchange side plate 211 and the battery module 31, thereby achieving heating or cooling of the battery module 31. In addition, the thermally conductive adhesive 70 can also firmly bond the heat exchange base plate 10 to the battery module 31, and the heat exchange side plate 211 to the battery module 31, so as to realize the connection between the battery module 31, the heat exchange base plate 10 and the heat exchange side plate 211. This can basically eliminate the gap between the battery module 31 and the heat exchange base plate 10 and the heat exchange side plate 211, so that the battery module 31 has a certain heat preservation effect and can reduce the temperature drop rate of the battery module 31 under low temperature conditions.

[0061] Please refer to Figures 4 and 8. In some embodiments, the battery module 31 is detachably connected to the heat exchange base plate 10. Specifically, the battery module 31 includes a battery pack 312 and two end plates 311. The battery pack 312 includes multiple battery cells 312a. All battery cells 312a in the battery pack 312 are closely arranged along the length X of the heat exchange base plate 10. The two end plates 311 are spaced apart on opposite sides of the battery pack 312 along the length X of the heat exchange base plate 10 and clamp the battery pack 312. The two end plates 311 are detachably connected to the heat exchange base plate 10 by detachable parts such as screws, bolts, and pins, thereby facilitating the assembly and disassembly of the battery cells 30.

[0062] This application also provides an electrical device, which includes a battery 100 as described in any of the above embodiments, the battery 100 being used to provide electrical energy to the electrical device. The electrical device in this application has the effects described in any of the above embodiments, and therefore will not be repeated here.

[0063] The electrical devices can include, but are not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0064] It should be understood that the technical solutions described in the embodiments of this application are not limited to the electrical devices described above.

[0065] In the aforementioned battery 100 and electrical device, each pair of adjacent heat exchange side plates 211 in the same heat exchange side plate group 20, together with the heat exchange base plate 10, defines a heat exchange space. Battery modules 31 are installed one-to-one within this heat exchange space, and the battery modules 31 exchange heat through the heat exchange side plates 211 and the heat exchange base plate 10 that define their respective heat exchange spaces. Thus, the heat exchange base plate 10 can be located at the bottom of the battery module 31 and heat or cool it, while the two adjacent heat exchange side plates 211 can be located on either side of the battery module 31 and heat or cool it, thereby achieving heating or cooling of the battery module 31. This design increases the heat exchange area of ​​the battery module 31, facilitating rapid heating or cooling, resulting in better heating and cooling effects, good temperature control performance, and a superior user experience. Furthermore, by setting at least two battery cells 30, the battery 100 has a high energy storage capacity, long battery life, and a high charge / discharge rate.

[0066] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0067] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A battery, characterized in that, The battery includes a heat exchange base plate (10), at least two heat exchange side plate assemblies (20) and at least two battery units (30). All the heat exchange side plate assemblies (20) and all the battery units (30) are installed on the top side of the heat exchange base plate (10) along the thickness direction (Z). All the heat exchange side plate assemblies (20) are arranged along the length direction (X) of the heat exchange base plate (10), and the at least two heat exchange side plate assemblies (20) correspond one-to-one with the at least two battery units (30). The heat exchange side plate group (20) includes at least two heat exchange side plates (211). All the heat exchange side plates (211) of the same heat exchange side plate group (20) are arranged at intervals along the width direction (Y) of the heat exchange base plate (10), and each pair of adjacent heat exchange side plates (211) in the same heat exchange side plate group (20) together with the heat exchange base plate (10) define a heat exchange space. The battery unit (30) includes at least one battery module (31). In the corresponding heat exchange side plate group (20) and the battery unit (30), the battery module (31) is installed in the heat exchange space in a one-to-one correspondence, and the battery module (31) exchanges heat through the heat exchange side plate (211) and the heat exchange base plate (10) that define the heat exchange space in which it is located.

2. The battery according to claim 1, characterized in that, The battery also includes a heat exchange pipe assembly (40), which corresponds one-to-one with the battery unit (30) and the heat exchange side plate assembly (20). The heat exchange pipe assembly (40) is used to circulate and input heat exchange fluid into and output heat exchange fluid into all the heat exchange side plates (211) of the corresponding heat exchange side plate assembly (20). There are two heat exchange side plate groups (20), two battery units (30) and two heat exchange pipe groups (40), with the two heat exchange pipe groups (40) arranged between the two heat exchange side plate groups (20).

3. The battery according to claim 2, characterized in that, The heat exchange side plate (211) has a first flow channel for supplying heat exchange fluid; the heat exchange side plates (211) in the same heat exchange side plate group (20) are arranged in pairs to form a heat exchange side plate unit (21); The heat exchange pipe assembly (40) includes an inlet pipe unit (41) and a return pipe unit (42), and the inlet pipe unit (41) and the return pipe unit (42) correspond one-to-one with the heat exchange side plate unit (21); The liquid inlet pipe unit (41) includes a liquid inlet pipe (411) and a liquid distribution pipe (412) connected together. The two opposite ends of the liquid distribution pipe (412) are respectively connected to the liquid inlets of the two first flow channels in the corresponding heat exchange side plate unit (21). The liquid return pipe unit (42) includes a liquid return pipe (421) and a liquid collection pipe (422) connected together. The two opposite ends of the liquid collection pipe (422) are respectively connected to the liquid outlets of the two first flow channels in the corresponding heat exchange side plate unit (21).

4. The battery according to claim 3, characterized in that, The heat exchange base plate (10) has a second flow channel for supplying heat exchange fluid flow; In the liquid inlet pipe unit (41) and the liquid return pipe unit (42) corresponding to the same heat exchange side plate unit (21), the liquid inlet pipe (411) and the liquid return pipe (421) are both connected to the second flow channel. In the flow direction of the heat exchange fluid in the second flow channel, the position where the liquid inlet pipe (411) is connected to the second flow channel is upstream of the position where the liquid return pipe (421) is connected to the second flow channel.

5. The battery according to claim 4, characterized in that, It also includes an inlet connector (50) and an outlet connector (60), which are disposed on the heat exchange base plate (10) and are both connected to the second flow channel.

6. The battery according to claim 5, characterized in that, The inlet connector (50) and the outlet connector (60) are located on one side of one of the heat exchange side plate groups (20) facing away from the other heat exchange side plate group (20), and the inlet connector (50) and the outlet connector (60) are arranged at opposite ends of the heat exchange base plate (10) along the width direction (Y).

7. The battery according to claim 3, characterized in that, In the same heat exchange pipe assembly (40), the orthographic projections of all the inlet pipes (411) on the width direction (Y) of the heat exchange base plate (10) completely overlap; the orthographic projections of all the distributor pipes (412) on the width direction (Y) of the heat exchange base plate (10) completely overlap; the orthographic projections of all the return pipes (421) on the width direction (Y) of the heat exchange base plate (10) completely overlap; and the orthographic projections of all the manifold pipes (422) on the width direction (Y) of the heat exchange base plate (10) completely overlap; and / or In the liquid inlet pipe unit (41) and the liquid return pipe unit (42) connected to the same heat exchange side plate unit (21), the orthogonal projections of the liquid distributor (412) and the liquid collector (422) on the thickness direction (Z) of the heat exchange base plate (10) completely overlap.

8. The battery according to claim 3, characterized in that, In the liquid inlet pipe unit (41), the liquid inlet pipe (411) is located on the side of the liquid distributor pipe (412) facing the heat exchange side plate (211) connected thereto; in the liquid return pipe unit (42), the liquid return pipe (421) is located on the side of the liquid collection pipe (422) facing the heat exchange side plate (211) connected thereto.

9. The battery according to claim 1, characterized in that, The battery module (31) is connected to the heat exchange side plate (211) and the heat exchange base plate (10) that define the heat exchange space in which it is located via thermally conductive adhesive (70).

10. The battery according to claim 1, characterized in that, The battery module (31) is detachably connected to the heat exchange base plate (10).

11. The battery according to claim 9, characterized in that, The battery module (31) includes a battery pack (312) and two end plates (311). The battery pack (312) includes multiple battery cells (312a). All battery cells (312a) in the battery pack (312) are arranged closely along the length direction X of the heat exchange base plate (10). The two end plates (311) are arranged at intervals along the length direction X of the heat exchange base plate (10) on opposite sides of the battery pack (312) and clamp the battery pack (312). The two end plates (311) are detachably connected to the heat exchange base plate.

12. An electrical appliance, characterized in that, The electrical device includes a battery as described in any one of claims 1 to 11.

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