Batteries, power consumption devices, methods and equipment for manufacturing batteries

Abstract

To provide a battery that has increased the utilization rate of a space inside the battery to improve the structural strength and energy density of the battery.SOLUTION: A battery (10), a power consumption apparatus, a method for manufacturing the battery, and an apparatus are provided. The battery comprises a plurality of battery cells (20) arranged along a first direction, a separator (101), and a hooking wall (204). The battery cells each include a first wall (201) and a second wall (202). The first wall of the battery cell is a wall having the largest surface area, and the second wall is connected with the first wall. The separator extends along the first direction, and is connected with the first wall of each battery cell of the plurality of battery cells. The hooking wall is connected with the second wall of each battery cell of the plurality of battery cells, and when the battery cells are provided in the power consumption apparatus, the battery cells are located below the hooking wall, and the hooking wall is used to hook the battery cells thereon. According to the technology plan in an example of the present application, the performance of the battery can be improved.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] This application relates to the technology of batteries, and more particularly to batteries, power consumption devices, methods for manufacturing batteries, and devices. [Background technology]

[0002] With environmental pollution worsening, the new energy industry is attracting increasing attention. Battery technology is a crucial element in the development of this new energy industry. [Overview of the project] [Problems that the invention aims to solve]

[0003] The utilization rate of internal battery space affects the structural strength and energy density of the battery, and further impacts its performance. Improving battery performance is a technical challenge that urgently needs to be addressed in battery technology. [Means for solving the problem]

[0004] This invention provides a battery, a power consumption device, a method for manufacturing a battery, and an apparatus that can improve the structural strength and energy density of the battery, thereby improving the performance of the battery.

[0005] According to the first embodiment, a battery is provided comprising a plurality of battery cells arranged along a first direction, a separator, and a hanging wall, wherein the battery cells have a first wall and a second wall, the first wall being the wall with the largest surface area of ​​the battery cell, the second wall being connected to the first wall, the separator extending along the first direction and connected to the first wall of each of the plurality of battery cells, the hanging wall being connected to the second wall of each of the plurality of battery cells, and when the battery cells are installed in a power-consuming device, the battery cells are located below the hanging wall, and the hanging wall is used to hang the battery cells.

[0006] In the embodiment of the present application, a separator is provided in the battery, which is connected to the first wall of each battery cell in a row of multiple battery cells arranged along a first direction, and the multiple battery cells are connected integrally by the separator. In this case, it is not necessary to provide structures such as side plates or beams inside the battery, and the utilization rate of the space inside the battery can be maximized, thereby improving the structural strength and energy density of the battery. Furthermore, in the battery, a hanging wall is provided which is connected to the second wall of each battery cell in the row of multiple battery cells arranged along the first direction, and the second wall is connected to the first wall. When the battery cell is installed in a power-consuming device, the battery cell is located below the hanging wall and is hung on the hanging wall. In this way, the second wall of the battery cell is directly connected to the hanging wall, and no space is required between the hanging wall and the battery cell, further increasing the utilization rate of the space inside the battery and improving the energy density of the battery. In addition, the structural strength of the battery can be improved by hanging the battery cell on the hanging wall. Therefore, the technical solution of the embodiment of the present application can improve the performance of the battery.

[0007] In one possible embodiment, electrode terminals are provided on the third wall of the battery cell, the third wall and the second wall are spaced apart and facing each other along a second direction, the second direction being perpendicular to the second wall, or the third wall is connected to the second wall and the first direction is perpendicular to the third wall.

[0008] The electrode terminals are provided on the third wall, and the third wall and the second wall are positioned opposite each other in a second direction, with the second direction being perpendicular to the second wall, or the third wall is connected to the second wall and the first direction is perpendicular to the third wall. In other words, the electrode terminals are provided on a wall that is not a hanging wall, and in this way, there is no need to leave space for the electrode terminals between the battery cell and the hanging wall beforehand, thereby maximizing the utilization rate of space inside the battery and improving the energy density of the battery.

[0009] In one possible embodiment, the separator is a metal plate. In this way, the strength of the separator can be ensured.

[0010] In one possible embodiment, an insulating layer is provided on the surface of the separator. By providing an insulating layer on the surface of the separator, the surface connected to the first wall of the separator can be made an insulating surface.

[0011] In one possible embodiment, the separator is a non-metallic material plate.

[0012] In one possible embodiment, a first cavity is provided in the separator. The first cavity can ensure the strength of the separator, reduce the weight of the separator, and the first cavity can allow the separator to have a large compression space in the direction perpendicular to the first wall, thereby providing a large expansion space for the battery cell.

[0013] In one possible embodiment, the first cavity is used to contain a fluid to adjust the temperature of the battery cell, and in this way, the temperature of the battery cell can be effectively managed.

[0014] In one possible embodiment, the size T1 of the separator in the third direction is 0.1 to 100 mm, and the third direction is perpendicular to the first wall. If the size T1 of the separator in the third direction is too small, the rigidity of the separator is low and the structural strength of the battery cannot be effectively improved. If the size T1 of the separator in the third direction is too large, it will occupy too much space inside the battery, which is disadvantageous for improving the energy density of the battery. Therefore, the size T1 of the separator in the third direction is set to 0.1 to 100 mm, and in this way, the energy density of the battery can be ensured and the structural strength of the battery can be improved.

[0015] In one possible embodiment, the size T1 of the separator in the third direction and the size T2 of the battery cell in the third direction satisfy 0 < T1 / T2 ≤ 7. In this way, the energy density of the battery can be ensured and the safety performance of the battery can be ensured.

[0016] In one possible embodiment, 0 < T1 / T2 ≤ 1, thereby further improving the energy density of the battery and ensuring the safety performance of the battery.

[0017] In one possible embodiment, the weight M1 of the separator and the weight M2 of the battery cell satisfy 0 < M1 / M2 ≤ 20. In this way, the weight energy density of the battery can be ensured and the safety performance of the battery can be ensured.

[0018] In one possible embodiment, 0.1 ≤ M1 / M2 ≤ 1, thereby further improving the energy density of the battery and ensuring the safety performance of the battery.

[0019] In one possible embodiment, the area S1 of the surface of the separator connected to the first wall of the plurality of battery cells and the area S2 of the first wall satisfy 0.2 ≤ S1 / S2 ≤ 30. In this way, the energy density of the battery can be ensured and the safety performance of the battery can be ensured.

[0020] In one possible embodiment, 2 ≤ S1 / S2 ≤ 10, thereby further improving the energy density of the battery and ensuring the safety performance of the battery.

[0021] In one possible embodiment, the specific heat capacity Q of the separator and the weight M1 of the separator satisfy 0.02 KJ / (kg 2 / °C) ≤ Q / M1 ≤ 100 KJ / (kg 2 / °C). When Q / M1 < 0.02 KJ / (kg 2 / °C), the separator absorbs a lot of energy, the temperature of the battery cell becomes too low, and lithium precipitation may occur. When Q / M1 > 100 KJ / (kg 2 / °C), the thermal conductivity of the separator is low and it cannot quickly take away heat. When 0.02 KJ / (kg 2 / °C) ≤ Q / M1 ≤ 100 KJ / (kg 2 / °C), the safety performance of the battery can be ensured.

[0022] In one possible embodiment, 0.3 KJ / (kg 2 / °C) ≤ Q / M1 ≤ 20 KJ / (kg 2 / °C), thereby further improving the safety performance of the battery.

[0023] In one possible embodiment, a second cavity is provided inside the partition wall. The second cavity can ensure the strength of the partition wall, reduce the weight of the partition wall, and enable the second cavity to have a large compression space in the direction perpendicular to the second wall of the partition wall, thereby providing a large expansion space for the battery cell.

[0024] In one possible embodiment, the second cavity is used to contain a fluid to regulate the temperature of the battery cell, and thus the temperature of the battery cell can be effectively managed.

[0025] In one possible embodiment, the battery further includes reinforcing ribs provided on the surface away from the battery cell along the second direction of the partition wall, and the second direction is perpendicular to the second wall. The reinforcing ribs can increase the strength of the partition wall.

[0026] In one possible embodiment, the reinforcing ribs and the partition wall are integrally formed, and this structure is easy to process and assemble.

[0027] In one possible embodiment, the battery includes a plurality of battery cells arranged in a plurality of rows along the first direction and a plurality of separators, and the plurality of rows of battery cells and the plurality of separators are alternately provided in a third direction, and the third direction is perpendicular to the first wall. In this way, the plurality of rows of battery cells and the plurality of separators are connected to each other to form an integral body and are housed in a box, and the structural strength of the entire battery can be ensured, thereby improving the performance of the battery.

[0028] In one possible embodiment, the battery comprises a plurality of battery modules, each comprising a plurality of battery cells and at least one separator arranged in at least one row along the first direction, and the at least one row of battery cells and at least one separator alternately arranged in a third direction, the third direction being perpendicular to the first wall.

[0029] In one possible embodiment, the battery module comprises N rows of the battery cells and N-1 separators, the separators being placed between two adjacent rows of the battery cells, where N is an integer greater than 1. In this way, even with fewer separators in the battery, it is possible to ensure that every single battery cell can be connected to a separator.

[0030] In one possible embodiment, the battery modules are arranged along the third direction, with gaps between adjacent battery modules. These gaps can provide expansion space for the battery cells.

[0031] In one possible embodiment, a fixing structure is provided at the first end of the separator, and the separator is fixed to the hanging wall via the fixing structure, in this way the structural strength of the battery can be improved.

[0032] In one possible embodiment, the separator is bonded to the first wall.

[0033] In one possible embodiment, the hanging wall is bonded to the second wall.

[0034] According to a second aspect, a power consumption device is provided that includes a battery in the first aspect or any possible embodiment of the first aspect, wherein the battery is used to provide electrical energy.

[0035] According to a third aspect, a method for manufacturing a battery is provided, comprising the steps of: providing a plurality of battery cells arranged along a first direction, wherein the battery cells each have a first wall and a second wall, the first wall being the wall with the largest surface area of ​​the battery cell, and the second wall being connected to the first wall; providing a separator extending along the first direction and connected to the first wall of each of the plurality of battery cells; and providing a hanging wall, wherein the hanging wall is connected to the second wall of each of the plurality of battery cells, and when the battery cells are installed in a power-consuming device, the battery cells are located below the hanging wall, and the hanging wall is used to hang the battery cells.

[0036] According to the fourth aspect, a battery manufacturing apparatus is provided that includes a module for performing the method of the third aspect described above.

[0037] In the embodiment of the present application, a separator is provided in the battery, which is connected to the first wall of each battery cell in a row of multiple battery cells arranged along a first direction, and the multiple battery cells are connected integrally by the separator. In this case, it is not necessary to provide structures such as side plates or beams inside the battery, and the utilization rate of the space inside the battery can be maximized, thereby improving the structural strength and energy density of the battery. Furthermore, in the battery, a hanging wall is provided which is connected to the second wall of each battery cell in the row of multiple battery cells arranged along the first direction, and the second wall is connected to the first wall. When the battery cell is installed in a power-consuming device, the battery cell is located below the hanging wall and is hung on the hanging wall. In this way, the second wall of the battery cell is directly connected to the hanging wall, and no space is required between the hanging wall and the battery cell, further increasing the utilization rate of the space inside the battery and improving the energy density of the battery. In addition, the structural strength of the battery can be improved by hanging the battery cell on the hanging wall. Therefore, the technical solution of the embodiment of the present application can improve the performance of the battery. [Brief explanation of the drawing]

[0038] To more clearly explain the technical concept of the embodiments of this application, the drawings necessary for the embodiments of this application will be briefly described below. As will be clear, the drawings described below represent only a few embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any creative work.

[0039] [Figure 1] This is a schematic diagram of the structure of a vehicle disclosed in one embodiment of the present application. [Figure 2] This is a schematic diagram of the disassembled structure of a battery disclosed in one embodiment of the present application. [Figure 3] This is a schematic diagram of the structure of a battery cell disclosed in one embodiment of the present application. [Figure 4] This is a schematic diagram of the structure of a battery disclosed in one embodiment of the present application. [Figure 5] This is a schematic diagram of a part of a battery disclosed in one embodiment of the present application. [Figure 6] This is a schematic diagram of a separator and insulating layer disclosed in one embodiment of the present application. [Figure 7] This is a schematic diagram of a separator having a cavity as disclosed in one embodiment of the present application. [Figure 8] This is a schematic diagram of a hanging wall disclosed in one embodiment of the present application. [Figure 9] This is a schematic diagram of a reinforcing rib disclosed in one embodiment of the present application. [Figure 10] This is a schematic diagram of the structure of a battery disclosed in one embodiment of the present application. [Figure 11] This is a schematic diagram of a battery manufacturing method according to one embodiment of the present invention. [Figure 12] This is a schematic diagram of a battery manufacturing apparatus according to one embodiment of the present invention. [Modes for carrying out the invention]

[0040] In the drawings, the figures are not drawn to actual scale.

[0041] Embodiments of the present application will be described in more detail below with reference to the drawings and examples. The detailed description of the following embodiments and drawings are used to illustrate the principles of the present application and are not intended to limit the scope of the present application; that is, the present application is not limited to the embodiments described.

[0042] In the description of this application, unless otherwise specified, all technical and scientific terms used are understood to be the same as those ordinarily understood by those skilled in the art. The terms used are merely for the purpose of describing specific embodiments and do not limit this application. The terms "includes," "has," and any variations thereof in the specification, claims, and brief description of the drawings are intended to cover non-exclusive inclusion. "Multiple" means two or more, and directions or positional relationships indicated by terms such as "up," "down," "left," "right," "inside," and "outside" are merely for the purpose of simplifying the description and making it easier to explain this application. They do not indicate or imply that the devices or elements shown necessarily have a specific orientation or are configured and operated in a specific orientation, and therefore should not be understood as limiting this application. Furthermore, terms such as "first," "second," and "third" do not indicate or imply relative importance, but are merely for descriptive purposes. "Perpendicular" does not mean strictly perpendicular, but is within the tolerance range. "Parallel" does not mean strictly parallel, but is within the tolerance range.

[0043] The “Examples” as used herein mean that certain features, structures, or properties described in conjunction with the Examples may be included in at least one Example of this Application. The phrase “Examples” appearing in various places in the Specification does not necessarily refer to the same Example, nor are they exclusively independent or alternative to each other. Those skilled in the art will understand, either explicitly or implicitly, that the Examples described herein can be combined with other Examples.

[0044] All directional terms appearing in the following description refer to the illustrated directions and do not limit the specific structure of the present application. In this description, unless otherwise explicitly stated or limited, the terms “attachment,” “connection,” and “connection” should be understood broadly. For example, they may be fixedly connected, detachably connected, or integrally connected. They may be directly connected, indirectly connected via an intermediate medium, or internally connected between two elements. Those skilled in the art will be able to understand the specific meaning of these terms in this application depending on the specific circumstances.

[0045] The terms "and / or" in this application are merely used to describe the relationship between related objects, indicating that three relationships exist. For example, A and / or B can indicate three situations: A existing alone, A and B existing simultaneously, or B existing alone. The letter " / " in this application generally indicates that the preceding and following related objects have an "or" relationship.

[0046] In this application, the battery cell includes lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, and the embodiments of this application are not limited thereto. The battery cell may be cylindrical, flattened, rectangular, or have other shapes, and similarly, the embodiments of this application are not limited thereto. Generally, battery cells are classified into three types according to their packaging method: cylindrical battery cells, prismatic battery cells, and soft-pack battery cells, and similarly, the embodiments of this application are not limited thereto.

[0047] The batteries referred to in the embodiments of this application are single physical modules comprising one or more battery cells to provide higher voltage and capacity. For example, the batteries referred to in this application include battery packs and the like. The batteries generally comprise a box for packaging one or more battery cells. The box can prevent liquids or other foreign matter from adversely affecting the charging or discharging of the battery cells.

[0048] A battery cell comprises an electrode assembly and an electrolyte, the electrode assembly consisting of a positive electrode plate, a negative electrode plate, and a diaphragm. The battery cell operates primarily by relying on the movement of metal ions between the positive and negative electrode plates. The positive electrode plate comprises a positive electrode current collector and a positive electrode active material layer, the positive electrode active material layer being coated on the surface of the positive electrode current collector, current collectors without the positive electrode active material layer protruding further than current collectors with the positive electrode active material layer, and current collectors without the positive electrode active material layer being used as positive electrode tabs. Taking a lithium-ion battery as an example, the material of the positive electrode current collector may be aluminum, and the positive electrode active material may be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide, etc. The negative electrode plate comprises a negative electrode current collector and a negative electrode active material layer, the negative electrode active material layer being coated on the surface of the negative electrode current collector, current collectors without the negative electrode active material layer protruding further than current collectors with the negative electrode active material layer, and current collectors without the negative electrode active material layer being used as negative electrode tabs. The negative electrode current collector may be made of copper, and the negative electrode active material may be carbon or silicon, etc. To ensure that high current flows without melting, the positive electrode tabs are multiple and laminated together, and the negative electrode tabs are multiple and laminated together. The diaphragm material may be polypropylene (PP) or polyethylene (PE), etc. Furthermore, the electrode assembly may have a wound structure or a laminated structure, and the embodiments of this application are not limited to these.

[0049] To meet various power demands, a battery may comprise multiple battery cells, which may be connected in series, parallel, or series-parallel, with series-parallel being a combination of series and parallel connections. Selectively, multiple battery cells may first be connected in series, parallel, or series-parallel to form a battery module, and then the multiple battery modules may be connected in series, parallel, or series-parallel to form a battery. In other words, multiple battery cells may directly form a battery, or they may first form a battery module, and then the battery module may form a battery. The battery is further provided in a power-consuming device to supply electrical energy to the device.

[0050] The development of battery technology requires simultaneous consideration of various design elements, such as energy density, cycle life, discharge capacity, charge / discharge rate, and safety. When the internal space of a battery is constant, increasing the utilization rate of that space is an effective way to improve the battery's energy density. However, increasing the utilization rate of internal space may reduce the structural strength of the battery. For example, a beam is typically provided inside the battery box to support the battery module, and side plates and end plates are provided on the battery module. While these beams, side plates, and end plates secure the battery, they occupy internal space. However, without these beams, side plates, and end plates, the structural strength of the battery becomes insufficient, negatively impacting its performance.

[0051] In view of this, the embodiments of the present application provide a technical solution, in which a battery is provided in which a separator is connected to the first wall of each battery cell, which has the largest surface area among a row of multiple battery cells arranged along a first direction, and the multiple battery cells are connected integrally by the separator, in which case it is not necessary to provide structures such as side plates or beams inside the battery, and the utilization rate of the space inside the battery can be maximized, thereby improving the structural strength and energy density of the battery. Furthermore, in the battery, a hanging wall is provided that is connected to the second wall of each battery cell among a row of multiple battery cells arranged along a first direction, and the second wall is connected to the first wall, and when the battery cell is installed in a power consuming device, the battery cell is located below the hanging wall and is hung on the hanging wall. In this way, the second wall of the battery cell is directly connected to the hanging wall, and no space is required between the hanging wall and the battery cell, further increasing the utilization rate of the space inside the battery and improving the energy density of the battery, and the structural strength of the battery can be improved by hanging the battery cell on the hanging wall, and therefore the technical solution of the embodiments of the present application can improve the performance of the battery.

[0052] The technical solutions described in the embodiments of this application can be applied to various devices that use batteries, such as mobile phones, portable devices, laptop computers, electric bicycles, electric toys, power tools, electric vehicles, ships, and spacecraft, for example, spacecraft include airplanes, rockets, space shuttles, and spaceships.

[0053] To ensure clarity, the technical solutions described in the embodiments of this application are applicable not only to the devices described above but to all devices that use batteries, and for the sake of brevity, the following embodiments will all be described using electric vehicles as examples.

[0054] For example, as shown in Figure 1, this is a schematic diagram of the structure of a vehicle 1 according to one embodiment of the present invention. The vehicle 1 may be a fuel-powered vehicle, a gas vehicle, or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle, or a range-extender electric vehicle. A motor 40, a controller 30, and a battery 10 may be provided inside the vehicle 1, and the controller 30 is used to control the battery 10 to supply power to the motor 40. For example, the battery 10 may be provided at the bottom, front, or rear of the vehicle 1. The battery 10 is used to power the vehicle 1, for example, as an operating power source for the vehicle 1, and is used in the circuit system of the vehicle 1, for example, for the power demands of starting, navigation, and driving the vehicle 1. In another embodiment of the present invention, the battery 10 is used not only as an operating power source for the vehicle 1, but also as a driving power source for the vehicle 1, and can provide driving power to the vehicle 1 by replacing or partially replacing gasoline or natural gas.

[0055] To meet various power usage demands, the battery 10 may be equipped with multiple battery cells. For example, as shown in Figure 2, a schematic diagram of the structure of a battery 10 according to one embodiment of the present invention, the battery 10 is equipped with multiple battery cells 20. The battery 10 further includes a box 11, the inside of which is hollow, and the multiple battery cells 20 are housed inside the box 11. For example, the multiple battery cells 20 are connected to each other in parallel, series, or series-parallel and then combined before being placed inside the box 11.

[0056] Optionally, the battery 10 may further comprise other structures, which are not described in detail here. For example, the battery 10 may further comprise a bus member used to realize electrical connections between multiple battery cells 20, such as parallel, series, or series-parallel connections. Specifically, the bus member can realize electrical connections between the battery cells 20 by connecting to the electrode terminals of the battery cells 20. Furthermore, the bus member can be fixed to the electrode terminals of the battery cells 20 by welding. The electrical energy of the multiple battery cells 20 can further be derived through a conductive mechanism and into a box. Optionally, the conductive mechanism may belong to the bus member.

[0057] The number of battery cells 20 can be set to any value depending on the various power demands. Multiple battery cells 20 can be connected in series, parallel, or series-parallel configurations to achieve a large capacity or power. Since each battery 10 may contain a large number of battery cells 20, to facilitate installation, the battery cells 20 can be grouped and installed, with each group of battery cells 20 forming a battery module. The number of battery cells 20 included in a battery module is not limited and can be set according to the demand. A battery may have multiple battery modules, and these battery modules can be connected in series, parallel, or series-parallel configurations.

[0058] As shown in Figure 3, this is a schematic diagram of the structure of a battery cell 20 according to one embodiment of the present invention, the battery cell 20 comprising one or more electrode assemblies 22, a housing 211, and a cover plate 212. The housing 211 and the cover plate 212 form a casing or battery case 21. Both the walls of the housing 211 and the cover plate 212 are referred to as the walls of the battery cell 20, and in the case of a rectangular parallelepiped battery cell 20, the walls of the housing 211 include a bottom wall and four side walls. The shape of the housing 211 is determined according to the shape after one or more electrode assemblies 22 are combined, for example, the housing 211 may be a hollow rectangular parallelepiped, cube, or cylinder, and one face of the housing 211 may have an opening so that one or more electrode assemblies 22 can be placed inside the housing 211. For example, if the housing 211 is a hollow rectangular parallelepiped or cube, one plane of the housing 211 is an opening, that is, there is no wall on that plane, and the inside and outside of the housing 211 are in communication. When the housing 211 is a hollow cylinder, the end face of the housing 211 is an open face, meaning there is no wall at the end face, allowing communication between the inside and outside of the housing 211. The cover plate 212 covers the opening and is connected to the housing 211 to form a sealed cavity for arranging the electrode assembly 22. The housing 211 is filled with an electrolyte, such as an electrolyte solution.

[0059] The battery cell 20 may further include two electrode terminals 214, which may be provided on a cover plate 212. The cover plate 212 is generally flat, and the two electrode terminals 214 are fixed to the flat surface of the cover plate 212, with the two electrode terminals 214 being a positive electrode terminal 214a and a negative electrode terminal 214b, respectively. A connecting member 23, or current collector member 23, is provided corresponding to each electrode terminal 214 and is located between the cover plate 212 and the electrode assembly 22, and is used to achieve an electrical connection between the electrode assembly 22 and the electrode terminals 214.

[0060] As shown in Figure 3, each electrode assembly 22 has a first tab 221a and a second tab 222a. The polarities of the first tab 221a and the second tab 222a are opposite. For example, if the first tab 221a is the positive electrode tab, then the second tab 222a is the negative electrode tab. The first tab 221a of one or more electrode assemblies 22 is connected to one electrode terminal via one connecting member 23, and the second tab 222a of one or more electrode assemblies 22 is connected to another electrode terminal via another connecting member 23. For example, the positive electrode terminal 214a is connected to the positive electrode tab via one connecting member 23, and the negative electrode terminal 214b is connected to the negative electrode tab via another connecting member 23.

[0061] In the battery cell 20, one or more electrode assemblies 22 may be provided depending on the actual usage requirements, and as shown in Figure 3, four independent electrode assemblies 22 are provided within the battery cell 20.

[0062] A pressure release mechanism 213 may be further provided in the battery cell 20. The pressure release mechanism 213 is used to release the internal pressure or temperature of the battery cell 20 when the internal pressure or temperature reaches a threshold.

[0063] The pressure release mechanism 213 may be any of the possible pressure release structures, and the embodiments of this application are not limited thereto. For example, the pressure release mechanism 213 may be a temperature-sensitive pressure release mechanism, which is configured to melt when the internal temperature of the battery cell 20 on which the pressure release mechanism 213 is provided reaches a threshold, and / or the pressure release mechanism 213 may be a pressure-sensitive pressure release mechanism, which is configured to rupture when the internal pressure of the battery cell 20 on which the pressure release mechanism 213 is provided reaches a threshold.

[0064] Figure 4 shows a schematic diagram of the structure of a battery 10 according to one embodiment of the present invention. As shown in Figure 4, the battery 10 comprises a plurality of battery cells 20 arranged along a first direction x, a separator 101, and a hanging wall 204.

[0065] The first direction x is the direction in which a row of battery cells 20 in the battery 10 are arranged. In other words, a row of battery cells 20 in the battery 10 is arranged along the x direction.

[0066] The battery cell 20 comprises a first wall 201 and a second wall 201, the first wall 201 being the wall with the largest surface area of ​​the battery cell 20, and the second wall 202 being connected to the first wall 201. The separator 101 extends along a first direction x and is connected to the first wall 201 of each of the battery cells 20 among the plurality of battery cells 20.

[0067] The battery cell 20 may have multiple walls, and the first wall 201 of the battery cell 20, which has the largest surface area, is connected to the separator 101. In other words, the first wall 201 of the battery cell 20 faces the separator 101, that is, the first wall 201 of the battery cell 20 is parallel to the first direction x.

[0068] The separator 101 is connected to the first wall 201 of the battery cell 20, which has the largest surface area. In this way, the contact area between the separator 101 and the battery cell 20 is increased, ensuring the connection strength between the separator 101 and the battery cell 20.

[0069] The hanging wall 204 is connected to the second wall 202 of each of the multiple battery cells 20. When the battery cells 20 are installed in a power-consuming device, the battery cells 20 are located below the hanging wall 204, and the hanging wall 204 is used to hang the battery cells 20.

[0070] The mounting wall 204 may be the top cover of the battery 10 box, or it may be part of a power-consuming device, such as the chassis of the vehicle 1. If the mounting wall 204 is the chassis of the vehicle 1, the second wall 202 of the battery cell 20 is connected to the mounting wall 204, that is, the second wall 202 of the battery cell 20 is connected to the surface of the chassis of the vehicle 1. The battery cell 20 is directly connected to the surface of the vehicle chassis, and in this way, a top cover for the battery 10 box is not required, saving the space occupied by the top cover for the battery 10 box, increasing the utilization rate of the space in the battery 10, and thereby improving the energy density of the battery 10.

[0071] In the embodiment of the present invention, the battery 10 is provided with a separator 101 connected to the first wall 201 of each battery cell 20 among a row of battery cells 20 arranged along a first direction x, the surface area of ​​each battery cell 20 being maximized, and the multiple battery cells 20 are connected integrally by the separator 101, in which case it is not necessary to provide structures such as side plates or beams inside the battery 10, the utilization rate of the space inside the battery 10 can be maximized, and the structural strength and energy density of the battery 10 can be improved. Furthermore, in the battery 10, a hanging wall 204 is provided connected to the second wall 202 of each battery cell 20 among the multiple battery cells 20 arranged along the first direction x, the second wall 202 is connected to the first wall 201, and when the battery cell 20 is installed in a power consuming device, the battery cell 20 is located below the hanging wall 204 and is hung on the hanging wall 204. In this way, the second wall 202 of the battery cell 20 is directly connected to the hanging wall 204, eliminating the need for space between the hanging wall 204 and the battery cell 20. This further increases the utilization rate of space inside the battery 10, improving the energy density of the battery 10. Additionally, by hanging the battery cell 20 on the hanging wall 204, the structural strength of the battery 10 can be improved. Therefore, the technical solution of the embodiment of the present invention can improve the performance of the battery 10.

[0072] Selectively, in one embodiment of the present invention, as shown in Figure 5(a), electrode terminals 214 are provided on the third wall 203 of the battery cell 20, the third wall 203 and the second wall 202 are spaced apart and facing each other along a second direction z, and the second direction z is perpendicular to the second wall 202.

[0073] Optionally, in another embodiment of the present invention, as shown in Figure 5(b), electrode terminals 214 are provided on the third wall 203 of the battery cell 20, the third wall 203 is connected to the second wall 202, and the first direction x is perpendicular to the third wall 203.

[0074] The electrode terminals 214 are provided on the third wall 203, and the third wall 203 and the second wall 202 are provided opposite each other with a gap along the second direction z, where the second direction z is perpendicular to the second wall 202, or the third wall 203 is connected to the second wall 202 and the first direction x is perpendicular to the third wall 203. In other words, the electrode terminals 214 are provided on a wall other than the hanging wall 204, and in this way, there is no need to reserve space for the electrode terminals 214 between the battery cell 20 and the hanging wall 204 in advance, thereby maximizing the utilization rate of space inside the battery 10 and improving the energy density of the battery 10.

[0075] Optionally, in one embodiment of the present invention, the separator 101 is a metal plate. That is, the entire separator 101 is made of a metal material. In such a case, an insulating layer is provided on the surface of the separator 101. Optionally, the insulating layer may be an insulating film adhered to the surface of the separator 101 or an insulating paint applied to the surface of the separator 101.

[0076] As shown in Figure 6, an insulating layer 102 is provided on the surface of the separator 101. By providing it in this way, the strength of the separator 101 can be ensured because the separator 101 is made of a metallic material, and the insulating layer 102 makes the surface of the separator 101 that is connected to the first wall 201 an insulating surface.

[0077] In one embodiment of the present invention, the separator 101 is a nonmetallic material plate, which is an optional feature.

[0078] In one embodiment of the present invention, as shown in Figure 7, a first cavity 1011 is provided within the separator 101. The first cavity 1011 ensures the strength of the separator 101 and reduces its weight. Furthermore, the first cavity 1011 allows the separator 101 to have a large compression space in the third direction y, thereby providing the battery cell 20 with a large expansion space.

[0079] Optionally, in one embodiment of the present invention, the first cavity 1011 is used to contain a fluid and regulate the temperature of the battery cell 20.

[0080] The fluid may be a liquid or a gas, and temperature control means heating or cooling the multiple battery cells 20. When lowering the temperature of the battery cells 20, the first cavity 1011 can contain a cooling medium to regulate the temperature of the multiple battery cells 20. In this case, the fluid may also be called a cooling medium or cooling fluid, and more specifically, a coolant or cooling gas. The fluid can also be used for heating, and the embodiments of this application are not limited to this. Optionally, the fluid may flow circulatingly, thereby achieving a better temperature control effect. Optionally, the fluid may be water, a mixture of water and ethylene glycol, a refrigerant, or air, etc.

[0081] Selectively, in one embodiment of the present invention, the size T1 of the separator 101 in the third direction y is 0.1 to 100 mm.

[0082] If the size T1 of the separator 101 in the third direction y is too small, the rigidity of the separator 101 is low, and the structural strength of the battery 10 cannot be effectively improved. If the size T1 of the separator 101 in the third direction y is too large, it will occupy too much space inside the battery 10, which is disadvantageous for improving the energy density of the battery 10. Therefore, the size T1 of the separator 101 in the third direction y is set to 0.1 - 100 mm. In this way, the energy density of the battery 10 can be ensured, and the structural strength of the battery 10 can be improved.

[0083] Optionally, in one embodiment of the present application, the size T1 of the separator 101 in the third direction y and the size T2 of the battery cell 20 in the third direction y satisfy 0 < T1 / T2 ≤ 7. [[ID=⑥]]

[0084] If T1 / T2 is too large, the separator 101 will occupy a large amount of space, which will have an adverse effect on the energy density. In addition, the separator 101 has too fast heat conduction to the battery cell 20, which may cause safety problems. For example, if a certain battery cell 20 undergoes thermal runaway, there is a risk of causing thermal runaway of other battery cells 20 connected to the same separator 101. When 0 < T1 / T2 ≤ 7, the energy density of the battery 10 can be ensured, and the safety performance of the battery 10 can be ensured.

[0085] Optionally, in one embodiment of the present application, the size T1 of the separator 101 in the third direction y and the size T2 of the battery cell 20 in the third direction y further satisfy 0 < T1 / T2 ≤ 1, thereby further improving the energy density of the battery 10 and ensuring the safety performance of the battery 10.

[0086] Optionally, in one embodiment of the present application, the weight M1 of the separator 101 and the weight M2 of the battery cell 20 satisfy 0 < M1 / M2 ≤ 20.

[0087] If M1 / M2 is too large, the weight energy density is lost. When 0 < M1 / M2 ≤ 20, the weight energy density of the battery 10 can be ensured and the safety performance of the battery 10 can be ensured.

[0088] Optionally, in one embodiment of the present application, the weight M1 of the separator 101 and the weight M2 of the battery cell 20 further satisfy 0.1 ≤ M1 / M2 ≤ 1, thereby further improving the energy density of the battery 10 and ensuring the safety performance of the battery 10.

[0089] Optionally, in one embodiment of the present application, the area S1 of the surface of the separator 101 connected to the first wall 201 of the plurality of battery cells 20 and the area S2 of the first wall 201 satisfy 0.2 ≤ S1 / S2 ≤ 30.

[0090] S1 is the total area of the surface of the separator 101 on the side connected to the battery cell 20. If S1 / S2 is too large, it will have an adverse effect on the energy density. If S1 / S2 is too small, the heat conduction effect is very low and it will have an adverse effect on the safety performance. When 0.2 ≤ S1 / S2 ≤ 30, the energy density of the battery 10 can be ensured and the safety performance of the battery 10 can be ensured.

[0091] Optionally, in one embodiment of the present application, the area S1 of the surface of the separator 101 connected to the first wall 201 of the plurality of battery cells 20 and the area S2 of the first wall 201 further satisfy 2 ≤ S1 / S2 ≤ 10, thereby further improving the energy density of the battery 10 and ensuring the safety performance of the battery​​​​​​​​​​​​​If Q / M1 > 100kJ / (kg), the separator 101 absorbs a lot of energy, the temperature of the battery cell 20 becomes too low, and lithium deposition may occur. 2 In the case of 0.02 kJ / (kg), the thermal conductivity of separator 101 is low, and it cannot quickly remove heat. 2 (°C)≦Q / M1≦100KJ / (kg) 2 At / °C, the safety performance of battery 10 can be ensured.

[0094] In one embodiment of the present invention, the specific heat capacity Q of the separator 101 and the weight M1 of the separator 101 are further set to 0.3 kJ / (kg). 2 (°C)≦Q / M1≦20KJ / (kg) 2 It satisfies the temperature ( / °C), thereby further improving the safety performance of battery 10.

[0095] Optionally, in one embodiment of the present invention, a second cavity 2041 may be provided inside the hanging wall 204, as shown in Figure 8. The second cavity 2041 ensures the strength of the hanging wall 204 and reduces its weight. Furthermore, the second cavity 2041 allows the hanging wall 204 to have a large compression space in the second direction z, thereby providing a large expansion space for the battery cell 20.

[0096] Optionally, in one embodiment of the present invention, the second cavity 2041 is used to contain a fluid and regulate the temperature of the battery cell 20.

[0097] The fluid may be a liquid or a gas, and temperature control means heating or cooling the multiple battery cells 20. When lowering the temperature of the battery cells 20, the second cavity 2014 can contain a cooling medium to regulate the temperature of the multiple battery cells 20. In this case, the fluid may also be called a cooling medium or cooling fluid, and more specifically, a coolant or cooling gas. The fluid can also be used for heating, and the embodiments of this application are not limited to this. Optionally, the fluid may flow circulatingly, thereby achieving a better temperature control effect. Optionally, the fluid may be water, a mixture of water and ethylene glycol, a refrigerant, or air, etc.

[0098] In one embodiment of the present invention, a reinforcing member 2042 is further provided within the second cavity 2041, thereby improving the strength of the hanging wall 204.

[0099] Optionally, in one embodiment of the present invention, as shown in Figure 9, the battery 10 further comprises reinforcing ribs 205, which are provided on the surface of the hanging wall 204 along a second direction z away from the battery cell 20.

[0100] In one embodiment of the present invention, the reinforcing rib 205 and the hanging wall 204 are integrally molded structures, which are optional. Such integrally molded structures are easy to process and assemble, and may be formed by joining, welding, bonding, machining, stamping, etc., but are not limited to these methods.

[0101] Selectively, in one embodiment of the present invention, the battery 10 comprises multiple rows of battery cells 20 and multiple separators 101 arranged along a first direction x, wherein the rows of battery cells 20 and the multiple separators 101 are alternately arranged in a third direction y, and the third direction y is perpendicular to the first wall 201. That is, the rows of battery cells 20 and the multiple separators 101 can be arranged according to separator 101, one row of battery cells 20, separator 101..., or one row of battery cells 20, separator 101, one row of battery cells 20.... In this way, the rows of battery cells 20 and the multiple separators 101 are connected to each other to form an integral structure, housed in a box 11, enabling effective heat conduction to each row of battery cells 20, ensuring the overall structural strength of the battery 10, and thereby improving the performance of the battery 10.

[0102] Figure 10 shows a schematic diagram of the structure of a battery 10 of another embodiment of the present invention. As shown in Figure 10, the battery 10 comprises a plurality of battery modules 100, each battery module 100 comprising at least one row of a plurality of battery cells 20 and at least one separator 101 arranged along a first direction x, and at least one row of battery cells 20 and at least one separator 101 arranged alternately in a third direction y. In other words, for each battery module 100, the rows of battery cells 20 and separators 101 are arranged alternately in the third direction y, and the plurality of battery modules 100 are housed in a box 11 to form the battery 10.

[0103] Selectively, the battery module 100 comprises N rows of battery cells 20 and N-1 separators 101, where the separators 101 are placed between two adjacent rows of battery cells 20, and N is an integer greater than 1. In other words, the separators 101 are located inside the battery module 100, and none are located outside the battery module 100. For example, one separator 101 may be placed between two rows of battery cells 20, and two separators 101 may be placed between three rows of battery cells 20, and so on.

[0104] Selectively, in one embodiment of the present invention, as shown in Figure 10, the battery module 100 comprises two rows of battery cells 20, i.e., N = 2. Correspondingly, one separator 101 is provided between the two rows of battery cells 20. No separator 101 is provided between adjacent battery modules 100, and in this way, in this embodiment, even if fewer separators 101 are provided in the battery 10, it is possible to ensure that all battery cells 20 can be connected to the separator 101.

[0105] In one embodiment of the present invention, the battery modules 100 are arranged along a third direction y, with gaps between adjacent battery modules 100. There are no separators 101 between adjacent battery modules 100, and there is a certain gap. The gaps between adjacent battery modules 100 can provide expansion space for the battery cells 20.

[0106] Optionally, a fixing structure 103 is provided at the first direction x end of the separator 101, and the separator 101 is fixed to the hanging wall 204 via the fixing structure 103. The fixing structure 103 may be directly connected to the hanging wall 204, or it may be connected to the side wall of the box 11 and then connected to the hanging wall 204. In this way, each battery cell 20 is fixed to the hanging wall 204 by the separator 101 and the fixing structure 103, thereby strengthening the fixed connection between the battery cells 20 and the hanging wall 204, connecting the entire battery 10 as a single unit, and improving the structural strength of the battery 10.

[0107] Optionally, the fixing structure 103 may include a fixing plate 104. The fixing plate 104 is fixedly connected to the end of the separator 101 and also fixedly connected to the battery cell 20 located at the end of the separator 101. For example, in the case of a rectangular battery cell 20, the fixing plate 104 is connected perpendicularly to the separator 101 and also to the separator 101 and two adjacent side walls of the rectangular battery cell 20, thereby further enhancing the fixing effect of the battery cell 20.

[0108] The fixing plate 104 can be optionally made of the same material as the separator 101, for example, metal, plastic, or composite material. The thickness of the fixing plate 104 can be the same as that of the separator 101. The material or thickness of the fixing plate 104 may differ from that of the separator 101; for example, the fixing plate 104 can be installed with higher strength or thickness, and the embodiments of this application are not limited thereto.

[0109] The connection method between the separator 101 and the fixing plate 104 may be selected to be resistance welding, resistance riveting, SPR riveting, lock bolts, or engagement, and the fixing plate 104 may be fixed to the hanging wall 204 by resistance welding, resistance riveting, SPR riveting, lock bolts, or engagement, and the embodiments of the present application are not limited thereto.

[0110] The fixing plate 104 and the battery cell 20 may be fixed and connected by an adhesive method, for example, by bonding with a structural adhesive, and the embodiments of the present application are not limited thereto.

[0111] Optionally, the fixing plate 104 includes a first connecting portion 105 formed by extending in a direction away from the battery cell 20 along a first direction, and the first connecting portion 105 is used to connect the hanging wall 204.

[0112] The first connection portion 105 may be parallel to the hanging wall 204, and the area of ​​the first connection portion 105 can be set according to the fixing method of the side wall of the connected box 11 so as to satisfy the required fixing effect.

[0113] The first connection portion 105 can be optionally formed by bending the fixing plate 104. For example, the first connection portion 105 is formed by bending the edge of the fixing plate 104 that is close to the hanging wall 204 away from the battery cell 20. For example, the first connection portion 105 can be formed by bending the upper edge of the fixing plate 104 outward. In this way, the first connection portion 105 and the main body of the fixing plate 104 are integrally formed, thereby improving connection performance.

[0114] Optionally, in one embodiment of the present invention, the fixing plate 104 further comprises a second connecting portion 106 formed extending away from the battery cell 20 along a first direction, the second connecting portion 106 being used to connect the fixing plate 104 to the separator 101. For example, at the connection point between the fixing plate 104 and the separator 101, the second connecting portion 106 is formed extending away from the battery cell 20, i.e., outward, and the fixing plate 104 is fixedly connected to the separator 101 via the second connecting portion 106.

[0115] In addition to selectively connecting the separator 101, the second connection part 106 can also simultaneously connect the fixing plates 104. For example, one fixing plate 104 is provided for each row of battery cells 20, and the separator 101 and the two fixing plates 104 corresponding to the two rows of battery cells 20 are fixed together by the second connection part 106.

[0116] The second connection portion 106 may be parallel to the separator 101. The area of ​​the second connection portion 106 can be set according to the fixing method so as to satisfy the required fixing effect.

[0117] In one embodiment of the present application, the separator 101 is bonded to the first wall 201, as is optional. That is, the separator 101 and the battery cell 20 may be fixed and connected by bonding, for example, with a structural adhesive, and the embodiments of the present application are not limited to this.

[0118] In one embodiment of the present application, the hanging wall 204 is bonded to the second wall 202, as is optional. That is, the hanging wall 204 and the battery cell 20 may be fixed and connected by bonding, for example, with a structural adhesive, and the embodiments of the present application are not limited to this.

[0119] For ease of understanding, relevant parts in each embodiment of this application can be referenced to one another, and for the sake of brevity, detailed explanations are omitted.

[0120] One embodiment of the present invention further provides a power-consuming device, which may include the battery 10 in the above embodiment. Optionally, the power-consuming device may be a vehicle 1, a ship, or a spacecraft, and the embodiments of the present invention are not limited thereto.

[0121] The battery 10 and power-consuming equipment of the embodiment of the present application have been described above. The manufacturing method and equipment of the battery 10 of the embodiment of the present application will be described below, and parts not described in detail here can be referred to the above embodiments.

[0122] Figure 11 shows an exemplary flowchart of a method 300 for manufacturing a battery 10 according to one embodiment of the present invention. As shown in Figure 11, the method 300 may include steps 310 to 330.

[0123] Step 310 provides a plurality of battery cells 20 arranged along a first direction x, each battery cell 20 comprising a first wall 201 and a second wall 202, the first wall 201 being the wall with the largest surface area of ​​the battery cell 20, and the second wall 202 being connected to the first wall 201.

[0124] In step 320, a separator 101 is provided, which extends along a first direction x and is connected to the first wall 201 of each of the multiple battery cells 20.

[0125] In step 330, a hanging wall 204 is provided, which is connected to the second wall 202 of each of the multiple battery cells 20, and when the battery cells 20 are installed in a power-consuming device, the battery cells 20 are located below the hanging wall 204, and the hanging wall 204 is used to hang the battery cells 20.

[0126] Figure 12 shows an exemplary block diagram of a battery manufacturing device 400 according to one embodiment of the present invention. As shown in Figure 12, the battery manufacturing device 400 may include a first supply module 410, a second supply module 420, and a third supply module 430.

[0127] The first supply module 410 is used to provide a plurality of battery cells 20 arranged along a first direction x, the battery cells 20 comprising a first wall 201 and a second wall 202, the first wall 201 being the wall with the largest surface area of ​​the battery cell 20, and the second wall 202 being connected to the first wall 201.

[0128] The second supply module 420 is used to provide a separator 101, which extends along a first direction x and is connected to the first wall 201 of each of the multiple battery cells 20.

[0129] The third supply module 430 is used to provide a hanging wall 204, which is connected to the second wall 202 of each of the multiple battery cells 20. When the battery cells 20 are installed in a power-consuming device, the battery cells 20 are located below the hanging wall 204, and the hanging wall 204 is used to hang the battery cells 20.

[0130] The following describes embodiments of the present application, but these embodiments are illustrative and intended solely for interpretation purposes and should not be understood as limiting the present application. Where no specific technical or conditional features are described in the embodiments, they shall be carried out in accordance with the technical or conditional features described in the literature in the art or in the product manual.

[0131] Using the battery cell 20 and separator 101 shown in the drawing, a safety test of the battery 10 was conducted in accordance with GB38031-2020, and the test results are shown in Tables 1 to 4.

[0132] [Table 1]

[0133] [Table 2]

[0134] [Table 3]

[0135] [Table 4]

[0136] As can be seen from the above test results, the battery 10 according to the present invention can meet the safety performance requirements.

[0137] While the present application has been described with reference to preferred embodiments, various improvements can be made without departing from the scope of the application, and components can be replaced with equivalent ones. In particular, all technical features relating to each embodiment can be combined arbitrarily, provided that there are no structural inconsistencies. The present application is not limited to the specific embodiments disclosed in the specification, but includes all technical ideas that fall within the scope of the claims. [Explanation of Symbols]

[0138] 1 vehicle 10 batteries 11 boxes 20 battery cells 21 Casing 22 Electrode Assembly 23 Connecting Member 30 controllers 40 motors 100 Battery Modules 101 Separator 102 Insulating layer 103 Fixed structure 104 Fixing plate 105 First connection section 106 Second connection section 201 1st wall 202 Second wall 203 Third wall 204 Wall hanging 205 Reinforcement Ribs 211 Housing 212 Cover Plate 213 Pressure release mechanism 214 Electrode terminal 214a Positive terminal 214b Negative terminal 221 Tab 1 222 Second Tab 400 Manufacturing equipment 410 First Provision Module 420 Second Provision Module 430 Third Provision Module 1011 First cavity 2014 2nd cavity 2041 2nd cavity 2042 Reinforcement member

Claims

1. It is a battery, It comprises multiple battery cells arranged along a first direction, a separator, and a hanging wall. The battery cell comprises a first wall and a second wall, the first wall being the wall with the largest surface area of ​​the battery cell, and the second wall being connected to the first wall. The separator extends along the first direction and is connected to the first wall of each of the plurality of battery cells, a first cavity is provided within the separator, and the first cavity is used to contain a fluid and regulate the temperature of the battery cells. The aforementioned hanging wall is connected to the second wall of each of the plurality of battery cells, and when the battery cells are installed in a power-consuming device, the battery cells are located below the hanging wall, and the hanging wall is used to hang the battery cells, wherein the battery.

2. Electrode terminals are provided on the third wall of the battery cell, the third wall and the second wall are spaced apart and facing each other along the second direction, and the second direction is perpendicular to the second wall, or The battery according to claim 1, wherein the third wall is connected to the second wall, and the first direction is perpendicular to the third wall.

3. The battery according to claim 1 or 2, wherein the separator is a metal material plate.

4. The battery according to claim 3, wherein an insulating layer (102) is provided on the surface of the separator.

5. The battery according to claim 1 or 2, wherein the separator is a non-metallic material plate.

6. The battery according to any one of claims 1 to 5, wherein the size T1 of the separator in the third direction is 0.1 to 100 mm, the size T1 of the separator in the third direction and the size T2 of the battery cell in the third direction satisfy 0 < T1 / T2 ≤ 7, and the third direction is perpendicular to the first wall.

7. The battery according to claim 6, wherein 0 < T1 / T2 ≤ 1.

8. The battery according to any one of claims 1 to 7, wherein the weight M1 of the separator and the weight M2 of the battery cell satisfy 0 < M1 / M2 ≤ 20.

9. The battery according to claim 8, wherein 0.1 ≤ M1 / M2 ≤ 1.

10. The battery according to any one of claims 1 to 9, wherein the area S1 of the surface of the separator connected to the first wall of the plurality of battery cells and the area S2 of the first wall satisfy 0.2 ≤ S1 / S2 ≤ 30.

11. The battery according to claim 10, wherein 2 ≤ S1 / S2 ≤ 10.

12. The specific heat capacity Q of the separator and the weight M1 of the separator are equal to 0.02 kJ / kg. ２ / ℃)≦Q / M1≦100KJ / (kg ２ A battery according to any one of claims 1 to 11, satisfying the condition ( / °C).

13. 0.3 kJ / (kg) ２ / ℃)≦Q / M1≦20KJ / (kg ２ The battery according to claim 12, wherein the temperature is / °C.

14. A battery according to any one of claims 1 to 13, wherein a second cavity is provided inside the hanging wall, and the second cavity is used to contain a fluid and regulate the temperature of the battery cell.

15. The battery according to any one of claims 1 to 14, comprising a plurality of battery cells and a plurality of separators arranged in a plurality of rows along the first direction, wherein the plurality of rows of battery cells and the plurality of separators are arranged alternately in a third direction, and the third direction is perpendicular to the first wall.

16. The battery comprises a plurality of battery modules, each battery module comprising at least one row of the battery cells and at least one separator arranged along the first direction, and the at least one row of the battery cells and at least one separator are arranged alternately in the third direction, or The battery module comprises N rows of the battery cells and N-1 separators, the separators being placed between two adjacent rows of the battery cells, and N being an integer greater than 1. The battery according to any one of claims 1 to 15, wherein the plurality of battery modules are arranged along the third direction, with gaps between adjacent battery modules, and the third direction is perpendicular to the first wall.

17. A battery according to any one of claims 1 to 16, wherein a fixing structure is provided at the end of the separator in the first direction, and the separator is fixed to the hanging wall via the fixing structure.

18. A power-consuming device comprising a battery according to any one of claims 1 to 17, wherein the battery is used to provide electrical energy.

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