Battery and electrical device
Patent Information
- Application Number
- ES2022722113T
- Authority / Receiving Office
- ES · ES
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2022-02-21
- Publication Date
- 2026-09-14
- Estimated Expiration
- 2042-02-21
Smart Images
Figure 00000013_0000 
Figure 00000014_0000 
Figure 00000015_0000
Abstract
Description
Battery and electrical device TECHNICAL FIELD This application relates to the field of battery technologies and, in particular, to a battery, a power consumption device, and a method and device for manufacturing a battery. BACKGROUND With the rise in environmental pollution, the new energy industry has attracted increasing interest. Within this industry, battery technology is a key factor in its development. Battery energy density is an important parameter in battery performance. However, other battery performance parameters must also be considered when trying to improve battery energy density. Therefore, how to improve battery performance is a pressing technical problem that needs to be addressed in battery technology. Document KR20200066421A discloses a high-temperature, high-rate charge / discharge lithium secondary battery with a heat dissipation composite material. A heat dissipation structure (100) is obtained by sequential stacking following the order of a primary heat dissipation layer (110) formed from conductive thermal insulation materials to be in close contact with a battery cell; a secondary heat dissipation layer (120) formed from an aluminum alloy with a thickness of 0.01–0.2 mm, a thermal conductivity of 160–250 W / mK, a density of 2.5–2.8 g / cm³, and a yield strength of 200–300 MPa, and configured to absorb heat from the battery cell through the primary heat dissipation layer (110); and an electrical insulation layer (130) to insulate electricity. Heat dissipation structures are arranged between a plurality of battery cells. US2015200428A1 discloses a battery arrangement with a plurality of stacked cells and a coil-type heat exchanger. The heat exchanger defines channels through which the coolant circulates. The heat exchanger is interposed with the cells such that opposite sides of each cell are in contact with the heat exchanger. WO2020096224A1 discloses a pouch-type battery cartridge. The pouch-type battery cartridge includes: a metal housing that contains a pouch-type battery; and a plate-shaped heat transfer sheet disposed between a facing surface of the pouch-type battery and a facing surface of the metal housing, which transfers the heat generated in the pouch-type battery to the metal housing. SUMMARY The scope of the invention is defined by the attached set of claims. BRIEF DESCRIPTION OF THE DRAWINGS To describe more clearly the technical solution of the embodiments of this application, the accompanying drawings necessary for the embodiments of this application are briefly described below. As can be seen, the accompanying drawings in the following description show only some embodiments of this application, and a person skilled in the art can still obtain other embodiments from these accompanying drawings without any further inventive step. FIG. 1 is a schematic diagram of a vehicle according to one embodiment of the present application; FIG. 2 is a schematic diagram of a battery according to one embodiment of the present application; FIG.3 is a schematic diagram of a battery cell according to one embodiment of the present application; FIG. 4 is a schematic diagram of a battery according to one embodiment of the present application; FIG. 5 is a schematic diagram of a thermal conduction member according to the embodiment of the present application; FIG. 6 is a schematic diagram of a thermal conduction member according to the embodiment of the present application; FIG. 7 is a schematic diagram of a battery according to one embodiment of the present application; FIG. 8 is a schematic flowchart of a method for manufacturing a battery according to an embodiment of the present application; and FIG. 9 is a schematic block diagram of a device for manufacturing a battery according to an embodiment of the present application. In the attached drawings, the figures are not drawn to actual scale. DESCRIPTION OF FORMS OF REALIZATION The implementations of this application are described in detail below, with reference to the accompanying drawings and embodiments. The detailed description of the following embodiments and the accompanying drawings is used to illustrate the principles of this application by way of example, but it cannot be used to limit the scope of this application; that is, this application is not limited to the embodiments described. In the description of this application, it should be noted that, unless otherwise defined, all technological and scientific terms used have the same meaning as commonly understood by those skilled in the art to which this application pertains. The terms used are merely for the purpose of describing specific embodiments and are not intended to limit the scope of this application. The expressions "which includes" and "which has" and any variations thereof in the specification and claims of this application, as well as the brief description of the drawings described above, are intended to cover non-exclusive inclusions."A plurality of" means more than two; and the orientations or positional relationships indicated by terms such as "above," "below," "left," "right," "inside," and "outside" are used only to facilitate the description of the present application and to simplify the description, and not to indicate or imply that a specified apparatus or element must have a specific orientation, or be constructed or operated in a specific orientation, and therefore should not be construed as a limitation of the present application. Furthermore, the terms "first," "second," "third," and the like are used only for descriptive purposes and should not be construed as an indication or implication of relative importance. "Vertical" does not mean strictly vertical, but within the permissible range of error. "Parallel" does not mean strictly parallel, but within the permissible range of error. The term "embeddings" used in this application means that the descriptions of specific properties, structures, and features, in combination with the embodiments, are included in at least one embodiment of this application. The term, which appears at various points in the specification, does not necessarily refer to the same embodiment, nor to a separate or alternative embodiment that excludes another embodiment. Those skilled in the art will understand, both explicitly and implicitly, that one embodiment described in this application may be combined with another embodiment. The terms representing directions in the following description refer to all directions shown in the drawings and do not limit the specific structure of this application. It should also be noted in the description of this application that, unless explicitly specified and defined otherwise, the terms "assemble," "connect," and "connection" should be understood in a broad sense; for example, it may be a fixed connection, a detachable connection, or a connection that is integral with the application; it may be a direct connection, an indirect connection through an intermediate means, or a connection between the interiors of two elements. Those skilled in the art may appreciate the specific meanings of the above terms in this application according to specific circumstances. The term "and / or" in this application describes only one association relationship to describe associated objects and indicates that there can be three relationships. For example, A and / or B can represent the following three cases: only A exists, both A and B exist, and only B exists. In addition, the character " / " in this application generally indicates that the associated objects before and after the character are in an "or" relationship. In this application, the battery cell may include a secondary lithium-ion battery, a primary lithium-ion battery, a lithium-sulfur battery, a sodium-lithium battery, a sodium-ion battery, a magnesium-ion battery, etc., which are not limited by the embodiments of this application. Battery cells may be cylindrical, flat, cuboid, or have other shapes, which are not limited by the embodiments of this application. Battery cells are generally divided into three types according to their packaging: cylindrical battery cells, prismatic battery cells, and pouch-type battery cells, which are not limited by the embodiments of this application.The battery referred to in the embodiments of this application means a single physical module comprising one or more battery cells to provide higher voltage and capacity. For example, the battery referred to in this application may include a battery pack, etc. The battery generally includes a casing that houses one or more battery cells. The casing may prevent liquid or other foreign matter from affecting the charging or discharging of the battery cell. The battery cell includes an electrode assembly and an electrolyte solution. The electrode assembly consists of a positive electrode plate, a negative electrode plate, and a separator. The operation of the battery cell relies primarily on the movement of metal ions between the positive and negative electrode plates. The positive electrode plate includes a positive electrode current collector and a layer of positive electrode active material. The layer of positive electrode active material coats a portion of the positive electrode current collector. The portion of the current collector not coated with the active material layer protrudes from the coated portion, and this uncoated portion acts as the positive electrode contact.For example, in a lithium-ion battery, the positive electrode current collector material might be aluminum, and the positive electrode active material might be lithium cobalt oxides, lithium iron phosphate, lithium ternary, lithium manganate, or similar materials. The negative electrode foil includes a negative electrode current collector and a layer of negative electrode active material. The layer of negative electrode active material covers a surface of the negative electrode current collector. The portion of the negative electrode current collector not coated with the layer of negative electrode active material protrudes from the portion coated with the layer of negative electrode active material, and this portion acts as the negative electrode tab.The material of the negative electrode current collector can be copper, and the active material of the negative electrode can be carbon, silicon, or similar materials. To ensure the passage of a large current without melting, there are a plurality of positive tabs stacked together, and a plurality of negative tabs stacked together. The separator material can be polypropylene (PP) or polyethylene (PE), etc. Furthermore, the electrode assembly can be a wound or laminated structure, and the embodiments described herein are not limited to these. To meet different energy demands, a battery can include a plurality of battery cells, which can be connected in series, parallel, or a series-parallel configuration. A series-parallel connection refers to a combination of series and parallel connections. Alternatively, a plurality of battery cells can first be connected in series, parallel, or a combination of both to form a battery module, and then multiple battery modules can be connected in series, parallel, or a combination of both to form a battery. That is, a plurality of battery cells can directly form a battery, or they can first form a battery module, and then those modules can be combined to form a battery. The battery is then supplied to a power-consuming device to provide electrical power to that device. Battery technology development requires considering multiple design factors simultaneously, such as energy density, lifespan, discharge capacity, C-rate, and safety. When the battery's internal space is fixed, improving its space utilization rate is an effective way to increase energy density. However, improving internal space utilization also necessitates considering other battery parameters, such as insulation and thermal conductivity. In view of this, a technical solution is provided for the embodiment of the present application. A thermal conduction member is provided in the battery for connection to a first wall with the largest surface area of each battery cell of a plurality of battery cells arranged along a first direction, wherein the thermal conduction member is configured to conduct heat from the battery cell, the surface of the thermal conduction member connected to the first wall is an insulating surface, and the dimension of the thermal conduction member in a second direction perpendicular to the first wall is 0.1~100 mm.In this way, it is not necessary to place a bar or other structures in the center of the battery casing, which can maximize the space utilization rate inside the battery, thereby improving the battery's energy density. At the same time, the aforementioned thermal conduction member can also be used to ensure electrical insulation and thermal conduction within the battery. Therefore, the technical solution described in the present application can improve the battery's energy density while ensuring its electrical insulation and thermal conduction, thus enhancing its performance. The technical solutions described in the forms of implementation of this application are all applicable to various battery-powered devices, such as mobile phones, portable devices, notebook computers, electric vehicles, electronic toys, power tools, electric vehicles, boats, and aircraft. For example, aircraft include airplanes, rockets, space shuttles, spacecraft, etc. It should be understood that the technical solutions described in the embodiments of this application are applicable not only to the devices described above, but also to all devices that use batteries. However, for the sake of simplicity, all the following embodiments are described using an electric vehicle as an example. For example, as shown in FIG. 1, a schematic structural diagram of a vehicle 1 according to one embodiment of the present application is presented. The vehicle 1 may be a fuel-powered vehicle, a gas-powered vehicle, or a new energy vehicle, and the new energy vehicle may be a battery electric vehicle, a hybrid vehicle, an extended-range vehicle, or the like. Inside the vehicle 1, a motor 40, a controller 30, and a battery 10 may be arranged, and the controller 30 is configured to control the battery 10 in order to supply power to the motor 40. For example, the battery 10 may be arranged at the bottom, front, or rear of the vehicle 1. The battery 10 may be used to supply power to the vehicle 1.For example, battery 10 can be used as the operating power source for vehicle 1 and is used for a circuit system of vehicle 1, for example, to meet the operating power demands of vehicle 1 during start-up, navigation, and driving. In another embodiment of this application, battery 10 can be used not only as the operating power source for vehicle 1 but also as the drive power source for vehicle 1, replacing, or partially replacing, fuel or natural gas to provide drive power to vehicle 1. In order to meet different energy requirements, the battery 10 may include a plurality of battery cells. For example, as shown in FIG. 2, a schematic structural diagram of a battery 10 according to one embodiment of the present application is represented. The battery 10 may include a plurality of battery cells 20. The battery 10 may further include a casing body 11 with a hollow structure inside, and the plurality of battery cells 20 are housed within the casing body 11. For example, the plurality of battery cells 20 are connected in series, in parallel, or in series and parallel, and then placed in the casing body 11. Optionally, battery 10 may also include other structures, which are not described in detail herein. For example, battery 10 may also include a busbar component. The busbar component is configured to implement an electrical connection between the plurality of battery cells 20, such as a parallel connection, a series connection, or a series-parallel connection. Specifically, the busbar component may implement the electrical connection between the battery cells 20 by connecting the electrode terminals of the battery cells 20. Furthermore, the busbar component may be attached to the electrode terminals of the battery cells 20 by welding. The electrical energy from the plurality of battery cells 20 may also be carried through an electrically conductive mechanism that passes through the casing.Optionally, the electrically conductive mechanism can also be part of the bus bar component. Depending on the energy requirements, the number of 20-cell batteries can be set to any value. Multiple 20-cell batteries can be connected in series, parallel, or a combination of both to achieve higher capacity or energy output. Since each 10-cell battery can contain numerous 20-cell batteries, these cells can be supplied in groups for easier installation, with each group forming a battery module. The number of 20-cell batteries within a battery module is unlimited and can be set according to requirements. The battery can include multiple battery modules, which can be connected in series, parallel, or a combination of both. As shown in FIG. 3, a schematic structural diagram of a battery cell 20 is represented according to an embodiment of the present application. The battery cell 20 includes one or more electrode assemblies 22, a housing 211, and a cover plate 212. The housing 211 and the cover plate 212 form a battery casing or case 21. Both a wall of the housing 211 and the cover plate 212 are referred to as the wall of the battery cell 20, where, for a cuboid battery cell 20, the wall of the housing 211 includes a bottom wall and four side walls. The housing 211 is shaped according to a configuration of one or more electrode assemblies 22 after their combination. For example, the housing 211 can be a hollow cuboid, a cube, or a cylinder, and a surface of the housing 211 has an opening so that one or more electrode assemblies 22 can be placed in the housing 211.For example, when the housing 211 is a cuboid or hollow cube, one face of the housing 211 is an opening face, meaning the face has no wall, so the inside and outside of the housing 211 are in communication with each other. When the housing 211 is a hollow cylinder, one end face of the housing 211 is the opening face, meaning the end face has no wall, so the inside and outside of the housing 211 are in communication with each other. The cover plate 212 covers the opening and is connected to the housing 211 to form a closed cavity in which the electrode assembly 22 is placed. The housing 211 is filled with an electrolyte, such as an electrolytic solution. The battery cell 20 may further include two electrode terminals 214, and the two electrode terminals 214 may be arranged on the cover plate 212. The cover plate 212 is generally shaped like a flat plate, and the two electrode terminals 214 are fixed to a flat face of the cover plate 212. The two electrode terminals 214 are a positive electrode terminal 214a and a negative electrode terminal 214b, respectively. Each electrode terminal 214 is correspondingly provided with a connecting element 23, also called a current-collecting member 23, which is located between the cover plate 212 and the electrode assembly 22 and is used to electrically connect the electrode assembly 22 to the electrode terminal 214. As shown in FIG. 3, each electrode assembly 22 has a first tab 221a and a second tab 222a. The polarity of the first tab 221a and the second tab 222a are opposite. For example, when the first tab 221a is a positive tab, the second tab 222a is a negative tab. The first tab 221a of one or more electrode assemblies 22 is connected to an electrode terminal via a connecting member 23, and the second electrode tab 222a of one or more electrode assemblies 22 is connected to the other electrode terminal via the other connecting member 23. For example, the positive electrode terminal 214a is connected to the positive electrode tab via a connecting member 23, and the negative electrode terminal 214b is connected to the negative tab via the other connecting member 23. In battery cell 20, according to the actual usage needs, there may be one or a plurality of electrode assemblies 22. As shown in FIG. 3, four independent electrode assemblies 22 are provided in battery cell 20. A pressure relief mechanism 213 may also be provided in battery cell 20. The pressure relief mechanism 213 is configured to activate when the internal pressure or temperature of battery cell 20 reaches a threshold value, in order to relieve the internal pressure or temperature. The pressure relief mechanism 213 may adopt various possible pressure relief structures, which is not limited in the forms of embodiment of this application. For example, the pressure relief mechanism 213 may be a temperature-sensitive pressure relief mechanism, configured to melt when the internal temperature of the battery cell 20 provided with the pressure relief mechanism 213 reaches a threshold value; and / or the pressure relief mechanism 213 may be a pressure-sensitive pressure relief mechanism, configured to rupture when the internal gas pressure of the battery cell 20 provided with the pressure relief mechanism 213 reaches a threshold value. FIG.4 shows a schematic structural diagram of a battery 10 according to one embodiment of the present application. Battery 10 includes a plurality of battery cells 20 arranged along a first xy direction and a thermal conduction member 101. The first x-direction is the direction of arrangement of a column of battery cells 20 in battery 10. That is, a column of battery cells 20 of the battery is arranged along the x-direction. The number of battery cells 20 in a column of battery cells 20 can be from 2 to 20, but this is not limited by the embodiment of the present application. The thermal conduction member 101 extending along the first xy direction is connected to a first wall 2111 of each battery cell 20 of the plurality of battery cells 20, and the first wall 2111 is the wall with the largest surface area of the battery cell 20. The battery cell 20 may include a plurality of walls, and the first wall 2111 with the largest surface area of the battery cell 20 is connected to the thermal conduction member 101. That is, the first wall 2111 of the battery cell 20 is opposite the thermal conduction member 101, i.e., the first wall 2111 of the battery cell 20 is parallel to the first x direction. The thermal conduction member 101 is configured to conduct heat from the battery cell 20, and a surface of the thermal conduction member 101 connected to the first wall 2111 is an insulating surface. The thermal conduction member 101 is used to conduct heat from the battery cell 20, ensuring that the temperature of the battery cell 20 remains within normal limits. The surface of the thermal conduction member 101 connected to the first wall 2111 is an insulating surface, ensuring electrical insulation between the thermal conduction member 101 and the battery cell 20. One dimension of the thermal conduction member 101 in a second direction y is 0.1~100 mm, and the second direction y is perpendicular to the first wall 2111. In the embodiments of the present application, a thermal conduction member 101 is provided in the battery 10, which connects to the first wall 2111 with the largest surface area of each battery cell 20 of the plurality of battery cells 20 arranged along the first x-direction. In this way, it is not necessary to place a bar or other structures in the center of the battery 10's casing body 11, which can maximize the space utilization rate inside the battery 10, thereby improving the energy density of the battery 10. Consequently, to ensure the performance of battery 10, the thermal conduction member 101 must meet strength requirements. In the embodiments of this application, when the dimension T2 of the thermal conduction member 101 in the second direction is 0.1–100 mm, both strength and space requirements can be considered. Specifically, the larger the T2 dimension of the thermal conduction member 101 in the second direction (i.e., the greater the thickness of the thermal conduction member 101), the greater its strength. Conversely, when T2 is smaller, it occupies less space. When T2 < 0.1 mm, the thermal conduction member 101 is easily damaged by external forces; and when T2 > 100 mm, it occupies too much space, negatively impacting energy density. Therefore, when the T2 dimension of the thermal conduction member 101 in the second direction is between 0.1 and 100 mm, space utilization can be improved while maintaining strength. In the embodiments of the present application, the thermal conduction member 101 is provided in the battery 10 to connect to the first wall 2111 with the largest surface area of each battery cell 20 of a plurality of battery cells 20 arranged along the first x direction, wherein the thermal conduction member 101 is configured to conduct heat from the battery cell 20, the surface of the thermal conduction member 101 connected to the first wall 2111 is the insulating surface, and the dimension of the thermal conduction member 101 in the second direction and perpendicular to the first wall 2111 is 0.1~100 mm.Thus, it is not necessary to place a bar or other structures in the center of the battery 10's box body 11, which can maximize the space utilization rate inside the battery 10, thereby improving the battery 10's energy density; at the same time, the aforementioned thermal conduction member 101 can also be used to ensure electrical insulation and thermal conduction in the battery 10. Therefore, the technical solution of the embodiment of the present application can improve the energy density of the battery 10 while ensuring the electrical insulation and thermal conduction of the battery 10, thereby improving the battery 10's performance. Optionally, in one embodiment of this application, the thermal conduction member 101 may be a plate of non-metallic material. That is, the thermal conduction member 101 is made entirely of a non-metallic insulating material. Optionally, in one embodiment of the present application, the thermal conduction member 101 may include a metal plate and an insulating layer, and the insulating layer is arranged on a surface of the metal plate. Figure 5 is a schematic diagram of a thermal conduction member 101 according to one embodiment of the present application. As shown in Figure 5, and according to the invention, the thermal conduction member 101 includes a metal plate 1011 and an insulating layer 1012, with the insulating layer 1012 disposed on a surface of the metal plate 1011. By this arrangement, the metal plate 1011 provides strength to the thermal conduction member 101, and the insulating layer 1012 makes the surface of the thermal conduction member 101 connected to the first wall 211 the insulating surface. Optionally, the insulating layer 1012 can be an insulating film adhered to the surface of the metal plate 1011 or an insulating varnish applied to the surface of the metal plate 1011. According to the invention, as shown in FIG. 6, a cavity 1013 is provided in the thermal conduction member 101. The cavity 1013 can reduce the weight of the thermal conduction member while ensuring its strength; for example, it can be applied when the thickness T2 of the thermal conduction member 101 is greater. Furthermore, the cavity 1013 allows the thermal conduction member 101 to have a larger compression space in the second direction, thus providing a larger expansion space for the battery cell 20. Optionally, in one embodiment of the present application, cavity 1013 may be configured to house a fluid for the purpose of adjusting the temperature of battery cell 20. The fluid may be a liquid or a gas, and the temperature adjustment involves heating or cooling the plurality of battery cells 20. In the case of cooling the battery cell 20, cavity 1013 may house a cooling medium for adjusting the temperature of the plurality of battery cells 20. In this case, the fluid may also be referred to as a cooling medium or cooling fluid; more specifically, it may be referred to as a cooling liquid or cooling gas. Furthermore, the fluid may also be configured for heating, which is not limited by the embodiments of this application. Optionally, the fluid may flow in a circulating manner to achieve a better temperature adjustment effect. Optionally, the fluid may be water, a mixture of water and ethylene glycol, refrigerant, air, or similar substances. Optionally, in one embodiment of the present application, a dimension T1 of the battery cell 20 in the second direction and a dimension T2 of the thermal conduction member 101 in the second direction satisfy: 0 <T2 / T17. When T2 / T1 is too large, the thermal conduction member 101 occupies more space, which affects the energy density. Furthermore, the thermal conduction member 101 conducts heat to the battery cell 20 too quickly, which can also cause safety issues. For example, thermal runaway from one battery cell 20 can cause thermal runaway from other battery cells 20 connected to the same thermal conduction member 101. When 0 <T2 / T17, se puede garantizar la densidad energética de la batería 10 y también se puede garantizar el rendimiento en materia de seguridad de la batería 10. Optionally, in one embodiment of the present application, a dimension T1 of the battery cell 20 in the second direction and a dimension T2 of the thermal conduction member 101 in the second direction may further satisfy 0 <T2 / T11, de modo que se mejora aún más la densidad energética de la batería 10 y se garantiza el rendimiento en materia de seguridad de la batería 10. Optionally, in one embodiment of the present application, a weight M1 of the battery cell 20 and a weight M2 of the thermal conduction member 101 satisfy: 0 <M2 / M120. When M2 / M1 is too large, gravimetric energy density can be lost. When 0 <M2 / M120, se puede garantizar la densidad energética gravimétrica de la batería 10 y también se puede garantizar el rendimiento en materia de seguridad de la batería 10. Optionally, in one embodiment of the present application, the weight M1 of the battery cell 20 and the weight M2 of the thermal conduction member 101 can further satisfy 0.1M2 / M11, so that the energy density of the battery 10 is further improved and the safety performance of the battery 10 is ensured. Optionally, in one embodiment of the present application, an area S1 of the first wall 2111 and an area S2 of a surface of the thermal conduction member 101 connected to the first wall of a column of the plurality of battery cells 20 satisfy: 0, 2S2 / S130. S2 is the total area of a lateral surface of the thermal conduction member 101 connected to the battery cell 20. When S2 / S1 is too large, the energy density is affected. When S2 / S1 is too small, the thermal conduction effect is very low, which affects safety performance. When 0.2 <S2 / S130, se puede garantizar la densidad energética de la batería 10 y también se puede garantizar el rendimiento en materia de seguridad de la batería 10. Optionally, in one embodiment of the present application, S2 and S1 may further satisfy 0, 1S2 / S110, thereby further improving the energy density of battery 10 and ensuring the safety performance of battery 10. Optionally, in one form of implementation of the present application, the specific heat capacity Q of the thermal conduction member 101 and the weight M2 of the thermal conduction member 101 satisfy: 0.02 KJ / (kg2*°C) Q / M2100 KJ / (kg2*°C) . When Q / M2 < 0.02 kJ / (kg2*°C), the thermal conduction member 101 can absorb more energy, resulting in an excessively low temperature of the battery cell 20, which may cause lithium accumulation; and when Q / M2 > 100 kJ / (kg2*°C), the thermal conduction capacity of the thermal conduction member 101 is deficient, and the heat may not dissipate in time. When Q / M2 is between 0.02 kJ / (kg2*°C) and 100 kJ / (kg2*°C), the safety performance of battery 10 can be guaranteed. Optionally, in one form of implementation of the present application, Q and M2 can further satisfy 0.3 KJ / (kg2*°C) Q / M220 KJ / (kg2*°C), so that the safety performance of battery 10 is further improved. Optionally, in one embodiment of the present application, the battery cell 20 includes two first walls 2111 arranged opposite each other in the second y-direction and two second walls 2112 arranged opposite each other in the first x-direction, wherein the second walls 2112 of the two adjacent battery cells 20 are opposite each other. That is, in the case of a prismatic battery cell 20, its large side face, i.e., the first wall 2111, is connected to the thermal conduction member 101, and its small side face, i.e., the second wall 2112, is connected to the adjacent second walls 2112 of the battery cell 20, so that they are arranged in a column in the first x-direction. In this way, the first wall 2111, which has a large area, is used to connect with the thermal conduction member 101, which promotes heat exchange of the battery cell 20 and ensures the performance of battery 10. According to the invention, the battery 10 includes a plurality of columns of battery cells 20 arranged along the first xy direction and a plurality of thermal conduction members 101, wherein the plurality of columns of battery cells 20 and the plurality of thermal conduction members 101 are arranged alternately in the second y direction. That is, the plurality of columns of battery cells 20 and the plurality of thermal conduction members 101 can be arranged according to the thermal conduction member 101, a column of battery cells 20, the thermal conduction member 101..., or a column of battery cells 20, the thermal conduction member 101, a column of battery cells 20...In this way, the plurality of battery cell columns 20 and the plurality of thermal conduction members 101 are connected together to form an assembly housed in the case body 11, which not only allows for efficient heat conduction for each battery cell column 20, but also ensures the overall structural strength of the battery 10, thereby improving the performance of the battery 10. Figure 7 shows a schematic structural diagram of a battery 10 according to another embodiment of the present application. As shown in Figure 7, the battery 10 may include a plurality of battery modules 100. The battery module 100 may include at least one column of the plurality of battery cells 20 arranged along the first xy direction and at least one thermal conduction member 101, with the at least one column of battery cells 20 and the at least one thermal conduction member 101 provided alternately in the second y direction. That is, for each battery module 100, a column of battery cells 20 and the thermal conduction member 101 are arranged alternately in the second y direction, and the plurality of battery modules 100 are housed in the casing body 11 to form the battery 10. Optionally, the battery module 100 may include N columns of battery cells 20 and N-1 thermal conduction member(s) 101, the thermal conduction member(s) 101 being provided (n) between two adjacent columns of battery cells 20, and N being an integer greater than 1. That is, the thermal conduction member(s) 101 is provided (n) on the inside of the battery module 100, and the thermal conduction member(s) 101 is not provided (n) on an outside side of the battery module 100. For example, one thermal conduction member 101 is provided between two columns of battery cells 20, two thermal conduction members 101 are provided between three columns of battery cells 20, and so on. Optionally, in one embodiment of the present application, as shown in FIG.7, the battery module 100 includes two columns of battery cells 20, i.e., N=2.Consequently, a thermal conduction member 101 is provided in the two columns of battery cells 20. The thermal conduction member 101 is not provided between adjacent battery modules 100. Thus, in this embodiment, fewer thermal conduction members 101 can be provided in battery 10, but at the same time, it can be ensured that each battery cell 20 can be connected to the thermal conduction member 101. Optionally, in one embodiment of the present application, the plurality of battery modules 100 are arranged along the second direction, and there is a gap between adjacent battery modules 100. There is no thermal conduction member 101 between adjacent battery modules 100 with a given gap. The gap between adjacent battery modules 100 can provide expansion space for the battery cell 20. Optionally, a fixing structure is provided on an end portion of the thermal conduction member 101 in the first x-direction, and the thermal conduction member 101 is fixed to the housing body 11 via the fixing structure. As shown in FIG. 7, the fixing structure may include a fixing plate 104. The fixing plate 104 is permanently attached to the end portion of the thermal conduction member 101 and connected to the battery cell 20 located on the end portion of the thermal conduction member 101, thereby improving the fixing effect on the battery cell 20. Optionally, in one embodiment of the present application, the thermal conduction member 101 may be attached to the first wall 2111. That is, the thermal conduction member 101 and the battery cell 20 may be permanently connected by bonding, such as bonding with a structural adhesive, but this is not limited by the embodiments of the present application. Optionally, battery cell 20 may be attached and fixed to the housing body 11. Optionally, adjacent battery cells 20 in each column of battery cells 20 may also be attached; for example, the second walls 2112 of the two adjacent battery cells 20 are joined using structural adhesive, but this is not limited by the embodiments of the present application. The attachment effect of battery cell 20 may be further enhanced by attaching and fixing adjacent battery cells 20 in each column of battery cells 20. It should be understood that the relevant parts in each form of implementation of this application may refer to one another and, for the sake of brevity, the details are not described again in this document. One embodiment of the present application further provides a power-consuming device, which may include the battery 10 of the preceding embodiments. Optionally, the power-consuming device may be a vehicle 1, a vessel, or an aircraft, or the like, but this is not limited by the embodiments of the present application. The battery 10 and the power consumption device of the embodiments of this application have been described above; a method and a device for manufacturing a battery of the embodiment of this application will now be described. For parts not described in detail, reference is made to the preceding embodiments. Figure 8 shows a schematic flowchart of a Method 300 for manufacturing a battery according to an embodiment of the present application. As shown in Figure 8, Method 300 may include: 310, providing a plurality of battery cells 20 arranged along a first x direction; 320, providing a thermal conduction member 101, the thermal conduction member 101 extending along the first xy direction and being connected to a first wall 2111 of each battery cell 20 of the plurality of battery cells 20, the first wall 2111 being a wall with the largest surface area of the battery cell 20, the thermal conduction member 101 being configured to conduct heat from the battery cell 20, and a surface of the thermal conduction member 101 being connected to the first wall 2111 being an insulating surface; and wherein a dimension of the thermal conduction member 101 in a second y direction is 0.1~100 mm, and the second y direction is perpendicular to the first wall 2111. Figure 9 shows a schematic block diagram of a device 400 for manufacturing a battery according to one embodiment of the present application. As shown in Figure 9, the device 400 for manufacturing a battery may include: a first supply module 410 configured to provide a plurality of battery cells 20 arranged along a first x direction; a second supply module 420 configured to provide a thermal conduction member 101, the thermal conduction member 101 extending along the first xy direction being connected to a first wall 2111 of each battery cell 20 of the plurality of battery cells 20, the first wall 2111 being a wall with the largest surface area of the battery cell 20, the thermal conduction member 101 being configured to conduct heat from the battery cell 20, and a surface of the thermal conduction member 101 connected to the first wall 2111 being an insulating surface; and wherein a dimension of the thermal conduction member 101 in a second y direction is 0.1~100 mm, and the second y direction is perpendicular to the first wall 2111. The following documents illustrate the methods for implementing this application. These methods are illustrative, used solely to explain the application, and should not be considered limiting. Unless otherwise specified, the implementation shall be carried out according to the method described in the relevant literature or product specifications. The battery cell 20 and the thermal conduction member 101 shown in the drawings are used, where the number of battery cells 20 in a column of battery cells 20 is 2-20, and a safety test is carried out on battery 10 according to standard GB38031-2020. The test results are shown in Tables 1 to 4. Table 1 Table 2 Table 3 Table 4 The results of the previous tests show that the battery 10 provided by this application can meet the safety performance requirements.
Claims
1. A battery, characterized in that it comprises: a plurality of battery cells (20) arranged along a first direction (x); a thermal conduction member (101) which is a flat plate extending along the first direction (x) and connected to a first wall (2111) of each battery cell (20) of the plurality of battery cells (20), the first wall (2111) being a wall with the largest surface area of the battery cell (20), the thermal conduction member (101) being configured to conduct heat from the battery cell (20), and a surface of the thermal conduction member (101) connected to the first wall (2111) being an insulating surface, the first wall (2111) being parallel to the first direction (x); wherein a dimension of the thermal conduction member (101) in a second direction (y) is 0.1~100 mm,and the second direction (y) is perpendicular to the first wall (2111); wherein the battery cell (20) comprises the two first walls (2111) arranged opposite each other in the second direction (y) and two second walls (2112) arranged opposite each other in the first direction (x), and wherein the second walls (2112) of the two adjacent battery cells (20) are opposite each other in the first direction (x); wherein the thermal conduction member (101) comprises a metal plate (1011) and an insulating layer (1012), and the insulating layer (1012) is disposed on a surface of the metal plate (1011); wherein the thermal conduction member (101) has a cavity (1013); and wherein the battery comprises a plurality of columns of the plurality of battery cells (20) arranged along the first direction (x) and a plurality of thermal conduction members (101),and wherein the plurality of battery cell columns (20) and the plurality of thermal conduction members (101) are arranged alternately in the second (y) direction.
2. The battery according to claim 1, wherein the thermal conduction member (101) is a plate of non-metallic material.
3. The battery according to claim 1, wherein the cavity (1013) is configured to house a fluid for the purpose of regulating the temperature of the battery cell (20).
4. The battery according to any one of claims 1 to 3, wherein a dimension T1 of the battery cell (20) in the second (y) direction and a dimension T2 of the thermal conduction member (101) in the second (y) direction satisfy: 0 <T2 / T17.
5. La batería de acuerdo con la reivindicación 4, en donde 0<T2 / T11.
6. La batería de acuerdo con una cualquiera de las reivindicaciones 1 a 5,wherein the weight M1 of the battery cell (20) and the weight M2 of the thermal conduction member (101) satisfy:
7. The battery according to claim 6, wherein 0, 1M2 / M11.
8. The battery according to any one of claims 1 to 7, wherein an area S1 of the first wall (2111) and an area S2 of a surface of the thermal conduction member (101) connected to the first wall (2111) of the plurality of battery cells (20) satisfy:
9. The battery according to claim 8, wherein 2S2 / S110.
10. The battery according to any one of claims 1 to 9, wherein the specific heat capacity Q of the thermal conduction member (101) and the weight M2 of the thermal conduction member (101) satisfy: 0.02 kJ / (kg²*°C) Q / M2 100 kJ / (kg²*°C).
11. The battery according to claim 10, wherein 0.3 kJ / (kg²*°C) Q / M2 20 kJ / (kg²*°C).
12. The battery according to any one of claims 1 to 11,wherein the battery comprises a plurality of battery modules (100), the battery module (100) comprises at least one column of the plurality of battery cells (20) arranged along the first direction (x) and the at least one thermal conduction member (101), and the at least one column of battery cells (20) and the at least one thermal conduction member (101) are provided alternately in the second direction (y).
13. The battery according to claim 12, wherein the battery module (100) comprises N columns of battery cells (20) and the N-1 thermal conduction member(s) (101), the thermal conduction member(s) (101) being provided (n) between two adjacent columns of battery cells (20), and N is an integer greater than 1.
14. The battery according to claim 12 or 13, wherein the plurality of battery modules (100) are arranged along the second (y) direction,and there is a gap between adjacent battery modules (100).
15. The battery according to any one of claims 1 to 14, wherein the thermal conduction member is attached to the first wall (2111).
16. A power consumption device, comprising: the battery (10) according to any one of claims 1 to 15, and the battery (10) is configured to provide electrical power.