Battery and electric device

Abstract

The present application relates to the technical field of batteries. Provided are a battery and an electric device. The battery comprises a case, battery cells, a bus component, and a first heat exchange assembly, wherein an accommodating space is formed in the case; a plurality of battery cells are provided, and the plurality of battery cells are accommodated in the accommodating space; the bus component is electrically connected between the battery cells, and a spacing space is formed between the bus component and the inner wall surface of the case; and the first heat exchange assembly is disposed in the spacing space and is thermally conductively connected to each of the bus component and the inner wall surface of the case. The present application aims to improve the heat dissipation efficiency of the battery and enhance the heat dissipation capability of the battery.

Description

Batteries and electrical devices

[0001] This application claims priority to Chinese Patent Application No. 202420993711.2, filed with the State Intellectual Property Office of China on May 9, 2024, entitled "Battery and Power-Consuming Device", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application belongs to the field of battery technology, and in particular relates to a battery and an electrical device. Background Technology

[0003] A battery is a modular unit formed by combining multiple battery cells. A battery typically includes a casing and battery cells. Multiple battery cells are connected and arranged in series and parallel within the limited space of the casing. The battery cells are electrically connected to each other through a busbar, which also plays a role in current distribution within the battery.

[0004] In related technologies, during battery operation, individual battery cells generate a certain amount of heat. The busbar component serves as a channel for heat transfer between battery cells. However, heat can easily accumulate at the location of the busbar component. If heat cannot be dissipated in time, it will affect the heat transfer channel of the battery, causing the heat transfer channel to be blocked, which in turn leads to a shortened lifespan of the battery cells and may damage the entire battery.

[0005] Summary of the Invention

[0006] The purpose of this application is to provide a battery and an electrical device that solves the technical problems of heat accumulation and heat transfer obstruction in the busbar components of the battery. Technical solutions

[0007] The technical solution adopted in the embodiments of this application is:

[0008] In a first aspect, embodiments of this application provide a battery, comprising:

[0009] The box-like structure forms a storage space;

[0010] A plurality of battery cells are provided, and the plurality of battery cells are housed within the accommodating space;

[0011] A current-combining component is electrically connected between the individual battery cells, and a gap is formed between the current-combining component and the inner wall of the housing;

[0012] The first heat exchange component is disposed within the interval space and is thermally connected to the manifold and the inner wall of the housing, respectively.

[0013] In this example, by setting a first heat exchange component in the space between the busbar component and the inner wall of the housing, and making the first heat exchange component thermally connected between the busbar component and the inner wall of the housing, the first heat exchange component forms a heat conduction path between the busbar component and the housing, thereby transferring the heat on the busbar component to the housing for further heat dissipation. This helps to reduce the heat accumulated at the location of the busbar component and reduces the resistance of the first heat exchange component to heat dissipation to the external environment, thereby improving heat dissipation efficiency and enhancing the heat dissipation capacity of the battery cell, effectively reducing the temperature of the battery cell and extending its lifespan.

[0014] In one embodiment, the battery includes multiple battery modules, each battery module including multiple battery cells; each battery module has an output terminal; the busbar includes a first busbar and a second busbar, the first busbar being connected between two adjacent battery cells in the battery module, and the second busbar being connected to the output terminal; multiple first heat exchange components are provided, some of the first heat exchange components being connected between the first busbar and the inner wall surface of the housing, and being thermally connected to the first busbar and the inner wall surface of the housing respectively; some of the first heat exchange components being connected between the second busbar and the inner wall surface of the housing, and being thermally connected to the second busbar and the inner wall surface of the housing respectively.

[0015] In this example, a first heat exchange component is connected to the first busbar between the individual battery cells in the battery module, allowing heat from the first busbar to be transferred to the housing for heat dissipation. Similarly, a first heat exchange component is connected to the second busbar connected to the output end of the battery module, allowing heat from the second busbar to be transferred to the housing for heat dissipation. By dissipating heat from the busbar components in the battery at these multiple locations, the heat dissipation area is increased, thereby improving heat dissipation efficiency.

[0016] In one embodiment, the battery further includes an adapter and a second heat exchange assembly. The adapter is electrically connected between two second busbars of the two battery modules, and the second heat exchange assembly is connected between the adapter and the inner wall of the housing, and is thermally connected to both the adapter and the inner wall of the housing.

[0017] In this example, a second heat exchange component is added, which is connected between the adapter and the inner wall of the housing. The heat on the adapter is transferred to the housing through the second heat exchange component, thereby dissipating heat through the housing. By dissipating heat from the busbar and adapter components in the battery at the above-mentioned multiple locations, the heat dissipation area is increased, and the heat dissipation efficiency is improved.

[0018] In one embodiment, the battery further includes an electrode base and a third heat exchange assembly. The electrode base is connected to the second busbar to support the second busbar. The third heat exchange assembly is connected between the electrode base and the inner wall of the housing, and is thermally connected to both the electrode base and the inner wall of the housing.

[0019] In this example, a third heat exchange component is added, which is connected between the electrode base and the inner wall of the housing. The heat on the electrode base can be transferred to the housing through the third heat exchange component, thereby dissipating heat through the housing. By dissipating heat from the current-collecting components, adapters, and electrode base in the battery at the above multiple locations, the heat dissipation area is increased, and the heat dissipation efficiency is improved.

[0020] In one embodiment, the first heat exchange component includes a heat-conducting element disposed within the interval space and thermally connected to the manifold and the inner wall surface of the housing, respectively.

[0021] In this example, the heat-conducting component plays a role in rapidly absorbing and conducting heat, which can quickly dissipate the heat from the busbar and the battery cells, thereby achieving the purpose of rapidly cooling the battery cells.

[0022] In one embodiment, the first heat exchange assembly further includes a heat exchange element, and the heat conduction element and the heat exchange element are stacked in a direction from the manifold toward the housing.

[0023] In this example, the heat generated by the battery during operation is accelerated by the heat conductor to the heat exchanger, and then the heat is discharged from the heat conductor, the busbar and the battery cells through the heat exchange medium inside the heat exchanger, thereby achieving the purpose of rapid cooling of the battery.

[0024] In one embodiment, the heat exchanger includes a heat exchange plate with flow channels formed thereon for containing heat exchange medium. One side of the heat exchange plate is thermally connected to the inner wall of the housing, and the other side of the heat exchange plate is fitted to the heat-conducting element.

[0025] In this example, the heat exchanger can be a heat exchange plate. The plate structure is easy to process and manufacture, and can form a larger contact area with the heat-conducting component and the inner wall of the box, which is beneficial to improving heat dissipation efficiency.

[0026] In one embodiment, the heat exchange plates in each of the first heat exchange components are formed as a single plate.

[0027] In this example, the heat exchange plates in each of the first heat exchange components are integrally molded plates, which facilitates the fabrication of the heat exchange components and the installation and disassembly of them with the busbar components, battery cells and housing.

[0028] In one embodiment, the heat exchanger further includes a pipe fitting inserted into and communicating with the flow channel to input or output the heat exchange medium through the pipe fitting.

[0029] In this example, pipe fittings are used for both the input and output of the heat exchange medium, which facilitates the assembly of the flow channel with external components, making installation and maintenance more convenient. This also protects the heat exchange plate and helps reduce subsequent maintenance costs.

[0030] In one embodiment, the heat-conducting element is elastic.

[0031] In this example, the heat-conducting component is made of an elastic material, which enables it to act as a shock absorber between the busbar and the inner wall of the housing, thereby reducing the risk of abnormal noise and squeaks.

[0032] In one embodiment, a protrusion is formed on the housing opposite to the manifold component, the protrusion protruding toward the first heat exchange component and abutting against the first heat exchange component.

[0033] In this example, the protrusion is used to shorten the distance between the surface of the first heat exchange component and the inner wall of the box, so that the busbar component can have a thinner thickness or a smaller height in the direction toward the inner wall of the box, which helps to reduce the thermal resistance caused by the thickness direction, thereby improving the efficiency of heat transfer and diffusion.

[0034] In one embodiment, a recess is formed on the outer wall surface of the housing corresponding to the protrusion.

[0035] In this example, by setting a recess in the casing, it is beneficial to reduce the weight of the casing and achieve battery lightweighting.

[0036] In one embodiment, the housing includes a first portion and a second portion, the first portion forming an inner cavity and having an opening communicating with the inner cavity, the second portion covering the opening to enclose the accommodating space with the first portion; the protrusion is formed in the second portion.

[0037] In this example, the casing adopts a split structure. The first part and the second part of the casing are connected in a detachable manner. The electrode of the battery cell is set towards the second part, and the protrusion is set on the second part, which facilitates processing and assembly.

[0038] Secondly, this application provides an electrical device that includes the battery described in the above embodiments, the battery being used to provide electrical energy.

[0039] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or exemplary technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 is a structural schematic diagram of a vehicle provided in some embodiments of this application;

[0042] Figure 2 is an exploded structural diagram of a battery provided in some embodiments of this application;

[0043] Figure 3 is a schematic diagram of the exploded structure of a battery provided in some embodiments of this application;

[0044] Figure 4 is a schematic diagram of the exploded structure of a battery provided in some embodiments of this application;

[0045] Figure 5 is a top view of a battery provided in some embodiments of this application;

[0046] Figure 6 is a cross-sectional view AA in Figure 5;

[0047] Figure 7 is the second sectional view of AA in Figure 5;

[0048] Figure 8 is a schematic diagram of the exploded structure of a battery provided in some embodiments of this application.

[0049] The reference numerals in the detailed embodiments are as follows:

[0050] Explanation of reference numerals in the attached drawings: 1000, vehicle; 1100, battery; 1110, housing; 1111, first part; 1112, second part; 1113, accommodating space; 1114, protrusion; 1115, recess; 1120, battery module; 1121, battery cell; 11211, output electrode; 1122, connecting frame; 1130, busbar component; 1131, first busbar; 1132, second busbar; 1140, first heat exchange assembly; 1141, heat conductor; 1142, heat exchanger; 11421, flow channel; 11422, pipe fitting; 1150, adapter component; 1160, electrode base; 1170, second heat exchange assembly; 1180, third heat exchange assembly; 1190, space; 1200, controller; 1300, motor. Detailed Implementation

[0051] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0052] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0053] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0054] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0055] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0056] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0057] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to 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 the embodiments of this application.

[0058] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" 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. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0059] A battery is a modular unit formed by combining multiple battery cells. A battery typically includes a casing and battery cells. Multiple battery cells are connected in series and parallel and arranged within the limited space of the casing. The battery cells are electrically connected to each other through busbars.

[0060] Specifically, a busbar component can be understood as an adapter or connector. It is an important component in a battery or battery module, performing multiple functions and is an indispensable part of the battery. Among them, a battery module is a structural form of a battery module.

[0061] First, the busbar acts as a connector between individual battery cells, linking them together. A battery cell is the basic component of a battery or battery module; the busbar connects multiple battery cells together to form a battery, or vice versa, to form a battery module. During the connection process, the busbar needs to ensure a secure connection to guarantee the proper functioning of the entire battery module.

[0062] In addition, the busbar component also plays a role in heat conduction. During battery operation, individual battery cells generate heat, which accumulates at the busbar component, leading to high temperatures. If heat cannot be dissipated in time, this can shorten the lifespan of individual battery cells and potentially damage the entire battery. Therefore, it is necessary to improve the heat accumulation problem at the busbar component by designing a reasonable heat dissipation scheme to enhance the heat dissipation capacity of individual battery cells, thereby effectively reducing their temperature and extending their lifespan.

[0063] Therefore, this application provides a battery 1100 that can selectively transfer heat to the location of the current collector 1130, reduce heat accumulation at the location of the current collector 1130, ensure unobstructed heat transfer channels, thereby improving the heat dissipation capacity of the battery cell 1121, effectively reducing the temperature of the battery cell 1121, and extending the life of the battery cell 1121.

[0064] Specifically, referring to Figures 2 and 3, this application embodiment provides a battery 1100, which may include a battery cell 1121. The battery 1100 disclosed in this application embodiment can be used in electrical devices that use the battery 1100 as a power source or in various energy storage systems that use the battery 1100 as an energy storage element. Electrical devices may include, but are not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Electric toys may include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft may include airplanes, rockets, space shuttles, and spacecraft, etc.

[0065] For ease of explanation, the following embodiments will be described using a vehicle 1000 as an example of an electrical device according to an embodiment of this application.

[0066] Please refer to Figure 1, which is a structural schematic diagram of a vehicle 1000 provided in some embodiments of this application. The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery 1100 is installed inside the vehicle 1000, and the battery 1100 can be located at the bottom, front, or rear of the vehicle 1000. The battery 1100 can be used to power the vehicle 1000; for example, the battery 1100 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 1200 and a motor 1300. The controller 1200 is used to control the battery 1100 to supply power to the motor 1300, for example, to meet the power needs of the vehicle 1000 during startup, navigation, and driving.

[0067] In some embodiments of this application, the battery 1100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0068] Please refer to Figure 2, which is an exploded view of a battery 1100 provided in some embodiments of this application. The battery 1100 includes a housing 1110 and individual battery cells 1121. The individual battery cells 1121 are housed within the housing 1110. The individual battery cells 1121 are connected in series, parallel, or mixed to form a battery module 1120, as shown in Figure 3. The housing 1110 provides accommodating space 1113 for the battery module 1120 or the individual battery cells 1121. The housing 1110 can adopt various structures.

[0069] Referring to Figure 2, the battery 1100 can be composed of multiple battery cells 1121 connected in series, parallel, or in a mixed manner through the busbar component 1130. Alternatively, referring to Figure 3, the battery 1100 can also be composed of multiple battery cells 1121 connected in series, parallel, or in a mixed manner through the busbar component 1130 to form a battery module 1120, and then the multiple battery modules 1121 are connected in series, parallel, or in a mixed manner to form a whole.

[0070] A battery cell 1121 refers to the smallest unit that makes up the battery 1100. Each battery cell 1121 can be a secondary battery cell or a primary battery cell; it can also be a lithium-sulfur battery cell, a sodium-ion battery cell, or a magnesium-ion battery cell, but is not limited to these. The battery cell 1121 can be cylindrical, flat, cuboid, or other shapes.

[0071] According to some embodiments of this application, as shown in Figures 2 and 3, this application provides a battery 1100, which includes a housing 1110, battery cells 1121, a current-carrying component 1130, and a first heat exchange assembly 1140. The housing 1110 forms an accommodating space 1113. Multiple battery cells 1121 are provided and housed within the accommodating space 1113. The current-carrying component 1130 is electrically connected between the battery cells 1121, and a space 1190 is formed between the current-carrying component 1130 and the inner wall of the housing 1110. The first heat exchange assembly 1140 is disposed within the space 1190 and is thermally connected to both the current-carrying component 1130 and the inner wall of the housing 1110.

[0072] Specifically, in some embodiments, referring to Figures 2 and 3, the housing 1110 may include a first portion 1111 and a second portion 1112, which overlap each other, and together define an accommodating space 1113 for accommodating a battery cell 1121. The second portion 1112 may be a hollow structure with one open end, and the first portion 1111 may be a plate-like structure, covering the open side of the second portion 1112 so that the first portion 1111 and the second portion 1112 together define the accommodating space 1113. Alternatively, both the first portion 1111 and the second portion 1112 may be hollow structures with one open side, with the open side of the first portion 1111 covering the open side of the second portion 1112. Of course, the housing 1110 formed by the first portion 1111 and the second portion 1112 can be of various shapes, such as a cylinder, a cuboid, etc.

[0073] The battery cell 1121 includes an electrode assembly, which is one of the core components of the battery 1100. The electrode assembly converts chemical energy into electrical energy. The basic structure of the electrode assembly includes a positive electrode, a negative electrode, a separator, and tabs. The tabs include a positive tab connected to the positive electrode and a negative tab connected to the negative electrode. The positive and negative electrodes are separated by the separator. During discharge, the positive and negative electrodes undergo a redox reaction, generating current.

[0074] The battery cell 1121 has an outer casing with a receiving space. The electrode assembly is housed within the receiving space, and tabs extend from the electrode assembly. The tabs are connected to the terminal posts via adapter plates or the like. The end of the battery cell 1121 with the terminal post is called the electrode terminal, which forms the output electrode 11211. The busbar component 1130 is electrically connected to the output electrode 11211.

[0075] Each battery cell 1121 is housed within the accommodating space 1113 of the housing 1110. Each battery cell 1121 has an output electrode 11211. A busbar 1130 is electrically connected between the battery cells 1121. The busbar 1130 electrically connects the output electrodes 11211 of each battery cell 1121. For example, the busbar 1130 is connected between the output electrodes 11211 of two adjacent battery cells 1121 to make the two battery cells 1121 electrically connected. Specifically, multiple battery cells 1121 can be connected in series, parallel, or mixed by connecting the busbar 1130. Mixed connection means that multiple battery cells 1121 are connected in both series and parallel. Multiple battery cells 1121 can be directly connected in series, parallel, or in a hybrid manner through a connecting component 1130, and then the entire assembly of the multiple battery cells 1121 can be housed within the housing 1110. Alternatively, the battery 1100 can also be formed by first connecting multiple battery cells 1121 in series, parallel, or in a hybrid manner through the connecting component 1130 to form a battery module 1120, and then connecting multiple battery modules 1120 in series, parallel, or in a hybrid manner through the connecting component 1130, adapter 1150, etc., to form an entire assembly, which is then housed within the accommodating space 1113 of the housing 1110. The connecting component 1130 can be used to realize the electrical connection between multiple battery cells 1121 or between multiple battery modules 1120.

[0076] The busbar component 1130 can be made of aluminum sheet material, commonly known as an aluminum busbar, which can be understood as an aluminum adapter plate structure, a type of electrical connection component. The busbar component 1130 is generally made of pure aluminum or aluminum alloy. Aluminum has good conductivity and light weight, which helps to reduce the overall weight of the battery 1100. In addition, the aluminum busbar component 1130 can provide low-resistance electrical connections between battery cells 1121 and between battery modules 1120. Furthermore, the aluminum busbar component 1130 is corrosion-resistant, suitable for use in various environmental conditions, and has a wide range of applications. Alternatively, the busbar component 1130 can also be made of copper sheet material, commonly known as a copper busbar.

[0077] The first heat exchange component 1140 is used for heat transfer and dissipation. Therefore, it needs to have high thermal conductivity and heat transfer coefficient. The first heat exchange component 1140 can be made of metallic or non-metallic materials. Metallic materials can include ferrous metals, non-ferrous metals, and special metals. Additionally, metallic materials can include alloy materials, specifically aluminum, iron, magnesium, titanium, copper, zinc, lead, silver, gold, platinum, and other alloy materials, including carbon steel, stainless steel, copper-nickel alloys, and iron-nickel alloys. Non-metallic materials can include thermally conductive adhesives and graphite patches. Furthermore, the first heat exchange component 1140 can adopt a rigid structure, an elastic structure, or a combination of both. For example, the first heat exchange component 1140 can use elastic thermally conductive adhesives or pads, or a non-elastic heat exchange plate, which can be made of metallic or non-metallic materials.

[0078] As shown in Figures 5 and 6, in the structural design of the battery 1100, since the exhaust problem of the end of the battery cell 1121 with the output electrode 11211 needs to be considered, a gap space 1190 is formed between the busbar component 1130 and the inner wall of the housing 1110. This gap space 1190 is a redundant space in the battery 1100. Therefore, in this application, the busbar component 1130 is installed in the redundant gap space 1190.

[0079] Specifically, referring to Figures 5 and 6, the first heat exchange component 1140 is disposed within the gap 1190 between the manifold component 1130 and the housing 1110, enabling the first heat exchange component 1140 to be thermally connected to the inner wall surfaces of both the manifold component 1130 and the housing 1110. The thermal connection can be either a contact connection or a non-contact connection. A contact connection refers to the first heat exchange component 1140 being in contact with the manifold component 1130, or the first heat exchange component 1140 being in contact with the inner wall surface of the housing 1110. A non-contact connection refers to the first heat exchange component 1140 being spaced apart from the manifold component 1130 and disposed within the gap. A thermally conductive medium (such as a thermally conductive pad or thermally conductive adhesive) is placed between the first heat exchange component 1140 and the inner wall surface of the housing 1110, with the thermally conductive medium (such as a thermally conductive pad or thermally conductive adhesive) placed in the gap. This allows the first heat exchange component 1140 to conduct heat through the thermally conductive medium in the gap, thereby transferring heat from the busbar component 1130 to the housing 1110. The inner wall surface of the housing 1110 refers to the wall surface of the housing 1110 facing the battery cell 1121, or the wall surface of the housing 1110 that encloses the accommodating space 1113. The first heat exchange component 1140 can be thermally connected to both the busbar component 1130 and the inner wall surface of the housing 1110. A larger thermally conductive area results in a larger heat exchange area and higher heat exchange efficiency. The thermally conductive area can be understood as the heat exchange area.

[0080] In this example, a first heat exchange component 1140 is provided in the space 1190 between the junction component 1130 and the inner wall of the housing 1110, and the first heat exchange component 1140 is thermally connected to both the junction component 1130 and the inner wall of the housing 1110. This creates a heat conduction path between the junction component 1130 and the housing 1110, transferring heat from the junction component 1130 to the housing 1110 for further heat dissipation. This reduces the heat accumulated at the junction component 1130 and decreases the resistance of the first heat exchange component 1140 to heat dissipation to the external environment, improving heat dissipation efficiency and enhancing the heat dissipation capacity of the battery cell 1121. Consequently, the temperature of the battery cell 1121 is effectively reduced, and the lifespan of the battery cell 1121 is extended.

[0081] In addition, the space 1190 between the busbar component 1130 and the housing 1110 is a redundant space. Placing the first heat exchange component 1140 in the space 1190 will not increase the volume of the battery 1100, improve the utilization rate of the housing space 1113 of the battery 1100, and will not lead to a decrease in the energy density of the battery 1100.

[0082] In some examples, referring to Figures 3 and 4, the battery 1100 includes multiple battery modules 1120, each battery module 1120 including multiple battery cells 1121; each battery module 1120 has an output terminal; the busbar component 1130 includes a first busbar 1131 and a second busbar 1132, the first busbar 1131 being connected between two adjacent battery cells 1121 in the battery module 1120, and the second busbar 1132 being connected to the output terminal; multiple first heat exchange components 1140 are provided, some of the first heat exchange components 1140 being connected between the first busbar 1131 and the inner wall surface of the housing 1110, and being thermally connected to the first busbar 1131 and the inner wall surface of the housing 1110 respectively, and some of the first heat exchange components 1140 being connected between the second busbar 1132 and the inner wall surface of the housing 1110, and being thermally connected to the second busbar 1132 and the inner wall surface of the housing 1110 respectively.

[0083] Specifically, in one possible embodiment, in the fabrication of battery 1100, battery modules 1120 are first formed by connecting them in series, parallel, or in a mixed manner through busbar components 1130. Each battery module 1120 forms an integrated output terminal. The output terminals of multiple battery modules 1120 are then connected in series, parallel, or in a mixed manner through busbar components 1130, adapter components 1150, etc., to form a whole, which is housed in the accommodating space 1113 of the housing 1110. The adapter component 1150 can be a copper busbar. Among them, two adjacent battery cells 1121 in each battery module 1120 are connected through a first busbar 1131. For each battery module 1120, two battery modules 1120 need to be electrically connected. Therefore, each battery module 1120 needs to form an output terminal, and a second busbar 1132 is connected to the output terminal. The second busbars 1132 on each battery module 1120 are then connected through adapter components 1150.

[0084] Therefore, a space 1190 is formed between the busbar component 1130 and the inner wall of the housing 1110. A first heat exchange component 1140 is disposed within this space 1190. For ease of understanding, the multiple first heat exchange components 1140 are divided into multiple first sub-heat exchange components and multiple second sub-heat exchange components. The portion of the first heat exchange component 1140 connected to the first busbar component 1131 is defined as the first sub-heat exchange component. Heat on the first busbar component 1131 is transferred to the housing 1110 through this first sub-heat exchange component, and then dissipated through the housing 1110, thereby reducing the heat loss of the first busbar component 1131. The heat on the second busbar 1132 is reduced, thus reducing heat accumulation and making the heat dissipation channel more unobstructed. The first heat exchange component 1140 connected to the second busbar 1132 is defined as the second sub-heat exchange component. An interval space 1190 is formed between the second busbar 1132 and the inner wall of the housing 1110. The second sub-heat exchange component is installed in the interval space 1190. The heat on the second busbar 1132 is transferred to the housing 1110 through the second sub-heat exchange component, and then dissipated through the housing 1110. This reduces the heat on the second busbar 1132, reduces heat accumulation, and makes the heat dissipation channel more unobstructed.

[0085] In this example, a first heat exchange component 1140 is connected to the first busbar 1131 between the battery cells 1121 in the battery module 1120, so that the heat on the first busbar 1131 can be transferred to the housing 1110 through the first heat exchange component 1140 for heat dissipation through the housing 1110. In addition, the first heat exchange component 1140 is connected to the second busbar 1132 connected to the output end of the battery module 1120, so that the heat on the second busbar 1132 can be transferred to the housing 1110 through the first heat exchange component 1140 for heat dissipation through the housing 1110. By dissipating heat from the busbar 1130 in the battery 1100 at the above multiple locations, it is beneficial to increase the heat dissipation area and improve the heat dissipation efficiency.

[0086] In some examples, referring to FIG4, the battery 1100 further includes a transition component 1150 and a second heat exchange assembly 1170. The transition component 1150 is electrically connected between two second busbars 1132 of the two battery modules 1120, and the second heat exchange assembly 1170 is connected between the transition component 1150 and the inner wall surface of the housing 1110, and is thermally connected to the transition component 1150 and the inner wall surface of the housing 1110, respectively.

[0087] Specifically, the adapter 1150 is used to connect between two battery modules 1120 for electrical connection and conduction, enabling the battery modules 1120 to be connected in series, parallel, or mixed connection. During the operation of the battery 1100, the battery cell 1121 generates current and heat. The adapter 1150 is used to transfer current and heat between the two battery modules 1120. Therefore, heat easily accumulates on the adapter 1150. Excessive heat accumulation cannot be dissipated or transferred in time, resulting in a high temperature of the adapter 1150, which in turn damages the battery cell 1121 and affects its service life.

[0088] Each battery module 1120 has a second busbar 1132 connected to its output terminal. When two battery modules 1120 are connected, the adapter 1150 contacts the second busbar 1132 on each of the two battery modules 1120, thereby achieving electrical connection. The adapter 1150 may be a copper busbar structure to enhance conductivity and transmission stability.

[0089] Therefore, it is understood that the heat exchange components in the battery 1100 include a first heat exchange assembly 1140 and a second heat exchange assembly 1170. The multiple first heat exchange assemblies 1140 are divided into multiple first sub-heat exchange assemblies and multiple second sub-heat exchange assemblies. The second heat exchange assembly 1170 is connected between the adapter 1150 and the inner wall surface of the housing 1110, and the second heat exchange assembly 1170 can be thermally connected to the adapter 1150 and the inner wall surface of the housing 1110 respectively. The area of ​​thermal conduction is the heat exchange area.

[0090] Similarly, the second heat exchange component 1170 is used for heat transfer and heat dissipation. The structure and material of the second heat exchange component 1170 can be the same as those of the first heat exchange component 1140, which will not be described in detail here.

[0091] In this example, considering that heat may also accumulate on the adapter 1150 connecting the battery modules 1120, and that there is a redundant gap space 1190 between the adapter 1150 and the housing 1110, a second heat exchange component 1170 is added. The second heat exchange component 1170 is connected between the adapter 1150 and the inner wall of the housing 1110, so that the heat on the adapter 1150 can be transferred to the housing 1110 through the second heat exchange component 1170, thereby dissipating heat through the housing 1110. By dissipating heat from the busbar 1130, adapter 1150, etc. in the battery 1100 at the above-mentioned multiple locations, it is beneficial to increase the heat dissipation area and improve the heat dissipation efficiency.

[0092] In some examples, referring to FIG4, the battery 1100 further includes an electrode base 1160 and a third heat exchange assembly 1180. The electrode base 1160 is connected to the second busbar 1132 to support the second busbar 1132. The third heat exchange assembly 1180 is connected between the electrode base 1160 and the inner wall surface of the housing 1110, and is thermally connected to the electrode base 1160 and the inner wall surface of the housing 1110, respectively.

[0093] Specifically, multiple battery cells 1121 are connected in series, parallel or mixed to form a battery module 1120. Generally, the battery module 1120 also includes a connecting frame 1122, which is used to surround and bind the multiple battery cells 1121 together, so that the battery module 1120 has a stable external shape.

[0094] The second busbar 1132 is connected to the output terminal of the battery module 1120. The second busbar 1132 is generally connected to the output electrode 11211 of the battery cell 1121 at the output terminal. The second busbar 1132 also has a suspended portion extending outwards from the output electrode 11211. This suspended portion is in a suspended state outside the battery cell 1121, posing a risk of instability. Therefore, a support member, namely the electrode base 1160, is generally added below the suspended portion of the second busbar 1132. The electrode base 1160 can be installed on the connecting frame 1122 in the battery module 1120. Of course, the electrode base 1160 can also be installed on other structural components in the battery 1100, ensuring stable installation of the electrode base 1160 and providing stable support for the second busbar 1132. The electrode base 1160 can also be connected to the adapter component 1150, providing support for the adapter component 1150.

[0095] A space 1190 is formed between the electrode base 1160 and the inner wall of the housing 1110. This space 1190 is redundant. In this example, a third heat exchange component 1180 is disposed within this space 1190, connecting the electrode base 1160 and the inner wall of the housing 1110. The third heat exchange component 1180 can be thermally connected to both the electrode base 1160 and the inner wall of the housing 1110, and the area of ​​thermal conduction is the heat exchange area. The structure and material of the third heat exchange component 1180 can be the same as those of the first heat exchange component 1140.

[0096] In this example, since the electrode base 1160 is connected to the second busbar 1132, there is also a problem of heat accumulation on the electrode base 1160 that cannot be dissipated in time. Furthermore, there is a redundant gap space 1190 between the electrode base 1160 and the inner wall of the housing 1110. Therefore, a third heat exchange component 1180 is added, which is connected between the electrode base 1160 and the inner wall of the housing 1110. This allows the heat on the electrode base 1160 to be transferred to the housing 1110, thereby dissipating heat through the housing 1110. By dissipating heat from the busbar 1130, the adapter 1150, and the electrode base 1160 in the battery 1100 at the aforementioned multiple locations, the heat dissipation area is increased, and the heat dissipation efficiency is improved.

[0097] In some examples, referring to FIG6, the first heat exchange assembly 1140 includes a heat-conducting element 1141, which is disposed in the space 1190 and is thermally connected to the inner wall surfaces of the manifold 1130 and the housing 1110, respectively.

[0098] Specifically, the heat-conducting component 1141 can be a metal or non-metal structure with a high thermal conductivity. Similarly, the heat-conducting component 1141 can also be a rigid or elastic structure. The heat-conducting component 1141 can directly contact the busbar component 1130 (including the first busbar component 1131 and the second busbar component 1132), the adapter component 1150, the electrode base 1160, etc., so that it can directly absorb the heat on the busbar component 1130, the adapter component 1150, and the electrode base 1160. The heat conduction rate is high, and the heat-conducting component 1141 plays the role of rapid heat absorption and conduction.

[0099] The heat-conducting component 1141 may be a sheet-like structure, or the heat-conducting component 1141 may include at least a plurality of sheet-like portions, such that the heat-conducting component 1141 or the sheet-like portions of the heat-conducting component 1141 are in close contact with the busbar component 1130, the adapter component 1150, the electrode base 1160, etc.

[0100] The portion of the heat-conducting component 1141 near the inner wall of the housing 1110 can contact the inner wall of the housing 1110 to quickly transfer the absorbed heat to the housing 1110, and dissipate heat through the housing 1110.

[0101] In this example, the heat-conducting component 1141 plays the role of rapid heat absorption and conduction, which can quickly dissipate the heat from the busbar component 1130 and the battery cell 1121, thereby achieving the purpose of rapid cooling of the battery cell 1121.

[0102] In some examples, as shown in Figures 7 and 8, the first heat exchange assembly 1140 further includes a heat exchange element 1142, and the heat conduction element 1141 and the heat exchange element 1142 are stacked in the direction from the manifold 1130 toward the housing 1110.

[0103] Specifically, the heat exchanger 1142 is stacked on the side of the heat conductor 1141 that is opposite to the busbar 1130, the adapter 1150 and the electrode base 1160. Since the heat exchanger 1142 and the heat conductor 1141 are stacked, there is a part that fits and contacts between the heat exchanger 1142 and the heat conductor 1141, so that the heat on the heat conductor 1141 can be transferred to the heat exchanger 1142.

[0104] The heat exchange principle of heat exchanger 1142 is to transfer heat to the outside by means of heat exchange medium flow. The heat exchange medium can be water, ethylene glycol, a mixture of water and ethylene glycol, air, phase change materials, etc. In addition, the heat exchange medium can cool or heat the battery cell 1121 to achieve the purpose of heat exchange. The structure of the heat exchange element 1142 is quite diverse. For example, the heat exchange element 1142 can directly adopt a pipe 11422. Multiple pipes 11422 can be arranged in an array and contact the heat-conducting element 1141. The heat exchange medium is introduced into the pipe 11422, and heat exchange occurs between the heat-conducting element 1141 and the heat exchange medium. This allows the heat on the heat-conducting element 1141 to be absorbed by the heat exchange medium and carried away by the heat exchange medium. When the heat exchange medium is a coolant, the heat-conducting element 1141, the busbar 1130, the battery cell 1121, etc. are cooled down to achieve the cooling and heat dissipation of the battery 1100.

[0105] The heat-conducting elements 1141 in each of the first heat exchange components 1140 can be formed into an integral heat exchange structure, that is, multiple heat-conducting elements 1141 are integrally formed into a single structural component; similarly, the heat exchange elements 1142 in each of the first heat exchange components 1140 can also be formed into an integral heat exchange component, that is, multiple heat exchange elements 1142 are integrally formed into a single structural component, so as to facilitate overall processing and installation.

[0106] When the busbar component 1130 includes a first busbar 1131 and a second busbar 1132, the first busbar 1131 is thermally connected to the inner wall of the housing 1110 through stacked heat-conducting elements 1141 and heat exchange elements 1142. In each first heat exchange assembly 1140 connected to each first busbar 1131, the plurality of heat-conducting elements 1141 in that portion of the first heat exchange assembly 1140 can be integrally formed into a single structural component. Similarly, the second busbar 1132 is thermally connected to the inner wall of the housing 1110 through stacked heat-conducting elements 1141 and heat exchange elements 1142. In each first heat exchange assembly 1140 connected to each second busbar 1132, the plurality of heat-conducting elements 1141 in that portion of the first heat exchange assembly 1140 can be integrally formed into a single structural component.

[0107] In this example, the heat generated when the battery 1100 is working is accelerated by the heat conductor 1141 to the heat exchanger 1142, and then the heat on the heat conductor 1141, the busbar 1130 and the battery cell 1121 is discharged through the circulating heat exchange medium inside the heat exchanger 1142, thereby achieving the purpose of rapidly cooling the battery 1100.

[0108] In some examples, as shown in FIG8, the heat exchanger 1142 includes a heat exchange plate with a flow channel 11421 formed thereon. The flow channel 11421 is used to contain the heat exchange medium. One side of the heat exchange plate is thermally connected to the inner wall of the housing 1110, and the other side of the heat exchange plate is fitted to the heat-conducting element 1141.

[0109] Specifically, the heat exchanger 1142 includes a heat exchange plate, on which a flow channel 11421 is formed. The flow channel 11421 is formed inside the heat exchange plate and extends along a straight line or curve inside the heat exchange plate so that the flow channel 11421 can cover the entire surface (or side) of the heat exchange plate as much as possible, thereby increasing the heat exchange area and improving the heat exchange efficiency.

[0110] The heat exchange plate has two sides. Since the heat exchange plate is located between the heat-conducting element 1141 and the inner wall of the housing 1110, it can be seen that one side of the heat exchange plate needs to be in contact with the surface of the heat-conducting element 1141, and the other side of the heat exchange plate can be in contact with the inner wall of the housing 1110, or it can be spaced apart from or close to the inner wall of the housing 1110. The flow channel 11421 is set as close as possible to the two sides of the heat exchange plate. Multiple flow channels 11421 can be set. Some flow channels 11421 are set close to one side of the heat exchange plate, and some flow channels 11421 are set close to the other side of the heat exchange plate.

[0111] In this example, the heat exchanger 1142 can be a heat exchange plate. The plate structure is easy to process and manufacture, and can form a larger contact area with the heat conduction component 1141 and the inner wall surface of the housing 1110, which is beneficial to improving heat dissipation efficiency.

[0112] In some examples, as shown in Figures 7 and 8, the heat exchange plates in each first heat exchange assembly 1140 are formed as a single plate.

[0113] Specifically, the number of first heat exchange components 1140 is the same as the number of junction components 1130. The first heat exchange components 1140 and junction components 1130 are arranged in a one-to-one correspondence. When the junction component 1130 includes a first junction 1131 and a second junction 1132, each first junction 1131 is thermally connected to the inner wall of the housing 1110 through a first heat exchange component 1140. That is, each first junction 1131 is thermally connected to the inner wall of the housing 1110 through a stacked heat-conducting element 1141 and a heat exchange plate (i.e., heat exchange element 1142). Similarly, each second junction 1132 is thermally connected to the inner wall of the housing 1110 through a first heat exchange component 1140. That is, each second junction 1132 is thermally connected to the inner wall of the housing 1110 through a stacked heat-conducting element 1141 and a heat exchange plate (i.e., heat exchange element 1142).

[0114] There are a large number of first heat exchange components 1140, and each first heat exchange component 1140 is equipped with a heat exchange plate. The dispersed number of heat exchange plates is not conducive to installation and the introduction of coolant for heat exchange and cooling. Therefore, the heat exchange plates in each first heat exchange component 1140 can be formed into a single plate. That is, the heat exchange plates in all the first heat exchange components 1140 are integrated into a single plate. Different areas are formed on this single plate to fit and abut against each heat conduction component 1141, thereby achieving the purpose of heat exchange with the heat conduction component 1141.

[0115] In this example, the heat exchange plates in each of the first heat exchange components 1140 are integrally formed plates, which facilitates the fabrication of the heat exchange components 1142 and the installation and disassembly of the busbar component 1130, the battery cell 1121 and the housing 1110.

[0116] In some examples, as shown in FIG8, the heat exchanger 1142 further includes a pipe 11422, which is inserted into and communicates with the flow channel 11421 to input or output the heat exchange medium through the pipe 11422.

[0117] Specifically, the fitting 11422 is a cylindrical structure with a through hole in the middle. The fitting 11422 can be made of rubber, silicone, metal, plastic, etc. The fitting 11422 is inserted into the flow channel 11421 and matches the extension path of the flow channel 11421. When the heat exchange medium is connected, the heat exchange medium enters into the flow channel 11421 or exits the flow channel 11421 through the through hole in the fitting 11422, thereby facilitating the connection with the flow channel 11421.

[0118] In this example, pipe fitting 11422 is used for input and output of heat exchange medium, which facilitates the assembly of flow channel 11421 with external components, making installation and maintenance more convenient, protecting the heat exchange plate, and helping to reduce subsequent maintenance costs.

[0119] In some examples, the thermal conductive element 1141 is elastic.

[0120] Specifically, the heat-conducting component 1141 can adopt a thermally conductive gel structure, such as thermally conductive silicone or thermally conductive rubber. The heat-conducting component 1141 can be prepared from materials such as silicone rubber: silicone rubber has excellent thermal conductivity and electrical insulation, as well as good flexibility and weather resistance. In application, the thermally conductive insulating layer of the aforementioned heat-conducting component 1141 can be applied to the busbar component 1130 through various methods such as coating, pressing, and lamination to provide effective thermal management and electrical isolation between the busbar component 1130 and the battery cell 1121.

[0121] The heat-conducting component 1141 is located between the junction component 1130 and the inner wall of the housing 1110, thereby playing a buffering and shock-absorbing role between the junction component 1130 and the inner wall of the housing 1110, reducing the collision noise generated between the junction component 1130 and the housing 1110 during the shaking of the battery 1100.

[0122] In this example, the heat-conducting component 1141 is made of an elastic material, which enables the heat-conducting component 1141 to play a shock-absorbing role between the busbar component 1130 and the inner wall of the housing 1110, thereby reducing the risk of abnormal noise and squeaks.

[0123] In some examples, as shown in Figures 6 and 7, a protrusion 1114 is formed on the housing 1110 at a position opposite to the manifold 1130. The protrusion 1114 protrudes toward the first heat exchange assembly 1140 and abuts against the first heat exchange assembly 1140.

[0124] Specifically, the protrusion 1114 protrudes towards the first heat exchange component 1140 and forms an abutment surface, which fits against the first heat exchange component 1140. The protrusion 1114 is formed on the inner wall surface of the housing 1110. The protrusion 1114 can be integrally formed with the housing 1110, or the protrusion 1114 and the housing 1110 can be independent components. The protrusion 1114 can be fixedly or detachably connected to the housing 1110. For example, the protrusion 1114 can be connected to the housing 1110 by welding, bonding or threaded connection.

[0125] In this example, the protrusion 1114 is used to shorten the distance between the surface of the first heat exchange component 1140 and the inner wall of the housing 1110, so that the confluence component 1130 can have a thinner thickness or a smaller height in the direction toward the inner wall of the housing 1110, which helps to reduce the thermal resistance caused by excessive thickness or height, thereby improving the efficiency of heat transfer and diffusion.

[0126] In some examples, as shown in Figures 3, 4, 6 and 7, a recess 1115 is formed on the outer wall surface of the housing 1110 corresponding to the protrusion 1114.

[0127] Specifically, the box 1110 has a shell-like structure, and the interior of the box 1110 forms an accommodating space 1113. Therefore, the wall of the box 1110 that surrounds the accommodating space 1113 is the inner wall, and the wall of the box 1110 that is exposed to the external space is the outer wall. The inner wall and the outer wall are arranged opposite to each other.

[0128] The protrusion 1114 is located on the inner wall surface of the housing 1110, and the concave portion 1115 is formed on the outer wall surface of the housing 1110. The concave portion 1115 is a groove structure formed on the outer wall surface. Multiple concave portions 1115 can be provided, and multiple concave portions 1115 can be spaced apart or connected.

[0129] The protrusion 1114 and the recess 1115 are formed on both sides of the wall panel of the housing 1110, which facilitates processing and helps to reduce the thickness of the wall panel of the housing 1110. In addition, since the protrusion 1114 and the recess 1115 are back-to-back, the housing 1110 can be stamped at a predetermined position to simultaneously form the protrusion 1114 and the recess 1115, making the preparation of the protrusion 1114 and the recess 1115 more convenient.

[0130] In this example, by providing a recessed portion 1115 on the housing 1110, the weight of the housing 1110 is reduced, thus achieving a lightweight design for the battery 1100. The arrangement of the recessed portion 1115 and the protruding portion 1114 facing back to back allows the housing 1110 to be manufactured using an integral molding method, making the molding of the recessed portion 1115, the protruding portion 1114, and the housing 1110 more convenient and improving production efficiency.

[0131] In some examples, referring to Figures 2-4, the housing 1110 includes a first part 1111 and a second part 1112. The first part 1111 forms an inner cavity and has an opening communicating with the inner cavity. The second part 1112 covers the opening to form an accommodating space 1113 with the first part 1111. A protrusion 1114 is formed in the second part 1112.

[0132] Specifically, the housing 1110 has a shell-like structure. Therefore, both the first part 1111 and the second part 1112 can be shell-like structures. The first part 1111 can be a hollow structure with an opening, that is, an inner cavity is formed on the first part 1111, and an opening communicating with the inner cavity is formed. For example, the first part 1111 is a shell structure with a receiving groove. The second part 1112 can also be a hollow structure with an opening. The second part 1112 covers the opening of the first part 1111 to form a receiving space 1113. The receiving space 1113 contains a battery cell 1121 or a battery module 1120. Alternatively, the second part 1112 can be a plate-like structure. For example, the second part 1112 is a cover plate, which covers the opening of the first part 1111 to form the receiving space 1113 together with the first part 1111.

[0133] The battery cell 1121 is housed in the accommodating space 1113. The terminal end of the battery cell 1121 (the end with the output electrode 11211) faces the second part 1112. Then, the protrusion 1114 is provided on the second part 1112 so that it can abut against the first heat exchange assembly 1140.

[0134] In this example, the housing 1110 adopts a split structure. The first part 1111 and the second part 1112 in the housing 1110 are connected in a detachable manner. The electrode of the battery cell 1121 is set towards the second part 1112. The protrusion 1114 is set on the second part 1112, which facilitates processing and assembly.

[0135] In one specific embodiment, the battery 1100 includes a housing 1110, battery cells 1121, a busbar component 1130, and a first heat exchange assembly 1140; wherein, the housing 1110 forms an accommodating space 1113; multiple battery cells 1121 are provided, and the multiple battery cells 1121 are accommodated within the accommodating space 1113; the busbar component 1130 is electrically connected between the battery cells 1121, and a gap space 1190 is formed between the busbar component 1130 and the inner wall surface of the housing 1110; the first heat exchange assembly 1140 is disposed within the gap space 1190 and is divided into The battery 1100 is thermally connected to the inner wall of the junction component 1130 and the housing 1110; the battery 1100 includes multiple battery modules 1120, each battery module 1120 including multiple battery cells 1121; each battery module 1120 has an output terminal; the junction component 1130 includes a first junction 1131 and a second junction 1132, the first junction 1131 being connected between two adjacent battery cells 1121 in the battery module 1120, and the second junction 1132 being connected to the output terminal; multiple first heat exchange components 1140 are provided, and some of the first heat exchange components 1140 are connected to... A portion of the first heat exchange assembly 1140 is connected between the second busbar 1132 and the inner wall of the housing 1110, and between the first busbar 1131 and the inner wall of the housing 1110. The first heat exchange assembly 1140 includes a heat-conducting element 1141, which is disposed within the space 1190 and is thermally connected to both the busbar 1130 and the inner wall of the housing 1110. The first heat exchange assembly 1140 also includes a heat exchanger 1142, with the heat-conducting element 1141 and the heat exchanger 1142 stacked along the direction from the busbar 1130 toward the housing 1110. The heat exchanger 1142 includes a heat exchange plate with a flow channel 11421 formed thereon. The flow channel 11421 is used to contain the heat exchange medium. One side of the heat exchange plate is thermally connected to the inner wall of the housing 1110, and the other side of the heat exchange plate is fitted to the heat-conducting component 1141. The heat exchange plate in each first heat exchange assembly 1140 is formed as an integral plate. The heat-conducting component 1141 is elastic. A protrusion 1114 is formed at the position of the housing 1110 opposite to the confluence component 1130. The protrusion 1114 protrudes toward the first heat exchange assembly 1140 and abuts against the first heat exchange assembly 1140.

[0136] In some examples, referring to FIG1, an example of an electrical device is disclosed, which includes the battery 1100 described in any of the above examples.

[0137] The electrical devices in this example include, but are not limited to: mobile phones, portable devices, laptops, electric vehicles, electric cars, ships, spacecraft, electric toys, and power tools, etc. The battery 1100 described in any of the above examples can be installed in the electrical device alone.

[0138] The examples of electrical devices in this application are based on the example of the battery 1100 described above. The examples of electrical devices include all the technical effects of the example of the battery 1100 described above, and will not be repeated here.

[0139] The above are merely preferred embodiments of this application, and only specifically describe the technical principles of this application. These descriptions are only for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on this explanation, any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application, as well as other specific embodiments of this application that can be conceived by those skilled in the art without creative effort, should be included within the scope of protection of this application.

Claims

1. A battery, characterized in that, include: The box-shaped structure forms a storage space; The battery cell is provided in multiple units, and the multiple battery cells are housed within the accommodating space; A current-combining component is electrically connected between the individual battery cells, and a gap is formed between the current-combining component and the inner wall of the housing; The first heat exchange component is disposed within the interval space and is thermally connected to the manifold and the inner wall of the housing, respectively.

2. The battery as described in claim 1, characterized in that, The battery includes multiple battery modules, and each battery module includes multiple battery cells; each battery module has an output terminal; the current-combining component includes a first current-combining component and a second current-combining component, the first current-combining component being connected between two adjacent battery cells in the battery module, and the second current-combining component being connected to the output terminal; multiple first heat exchange components are provided, some of the first heat exchange components being connected between the first current-combining component and the inner wall surface of the housing, and being thermally connected to the first current-combining component and the inner wall surface of the housing respectively; some of the first heat exchange components being connected between the second current-combining component and the inner wall surface of the housing, and being thermally connected to the second current-combining component and the inner wall surface of the housing respectively.

3. The battery as described in claim 2, characterized in that, The battery also includes an adapter and a second heat exchange assembly. The adapter is electrically connected between the two second busbars of the two battery modules. The second heat exchange assembly is connected between the adapter and the inner wall of the housing, and is thermally connected to the adapter and the inner wall of the housing, respectively.

4. The battery as described in claim 3, characterized in that, The battery also includes an electrode base and a third heat exchange assembly. The electrode base is connected to the second busbar to support the second busbar. The third heat exchange assembly is connected between the electrode base and the inner wall of the housing, and is thermally connected to both the electrode base and the inner wall of the housing.

5. The battery according to any one of claims 1-4, characterized in that, The first heat exchange component includes a heat-conducting element, which is disposed within the interval space and is thermally connected to the manifold and the inner wall of the housing, respectively.

6. The battery as described in claim 5, characterized in that, The first heat exchange assembly further includes a heat exchange element, and the heat conduction element and the heat exchange element are stacked together along the direction from the manifold towards the housing.

7. The battery as described in claim 6, characterized in that, The heat exchanger includes a heat exchange plate with flow channels formed thereon for containing heat exchange medium. One side of the heat exchange plate is thermally connected to the inner wall of the housing, and the other side of the heat exchange plate is fitted to the heat-conducting component.

8. The battery as claimed in claim 7, characterized in that, The heat exchange plates in each of the first heat exchange components are formed as a single plate.

9. The battery as described in claim 7 or 8, characterized in that, The heat exchanger also includes a pipe fitting, which is inserted into and communicates with the flow channel to input or output the heat exchange medium.

10. The battery as claimed in claim 5, characterized in that, The heat-conducting component is elastic.

11. The battery according to any one of claims 1-4, characterized in that, The housing has a protrusion at a position opposite to the manifold component, the protrusion protruding towards the first heat exchange component and abutting against the first heat exchange component.

12. The battery as claimed in claim 11, characterized in that, The outer wall surface of the box has a recessed portion corresponding to the protrusion.

13. The battery as claimed in claim 11, characterized in that, The box includes a first part and a second part. The first part forms an inner cavity and has an opening communicating with the inner cavity. The second part covers the opening to form the accommodating space together with the first part. The protrusion is formed in the second part.

14. An electrical appliance, characterized in that, Includes the battery as described in any one of claims 1-13.

Images