Battery, power consumption apparatus, manufacturing method of battery and apparatus

Abstract

To provide a battery, a power consumption apparatus, a manufacturing method of the battery and an apparatus.SOLUTION: A battery includes: a plurality of battery cells disposed in a first direction; and a hanging wall connected to a first wall of each battery cell in the plurality of battery cells. In a case where the battery cells are installed in a power consumption apparatus, the battery cells are positioned at a lower side of the hanging wall. The hanging wall includes a hanging wall to be used for hanging the battery cells, a relation between a size H of the hanging wall in a second direction and a weight M of the battery cells satisfies 0.04 mm / kg≤H / M≤100 mm / kg, and the second direction is vertical to the first wall. The performance of the battery can be improved by a technique of the embodiments of the present invention.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] Technical Field FIELD OF THE DISCLOSURE This application relates to the field of battery technology, and in particular to batteries, power consuming devices, battery manufacturing methods and devices. [Background technology]

[0002] Background technology As environmental pollution becomes more serious, the new energy industry has attracted more and more attention, and battery technology is a key factor in the development of the new energy industry.

[0003] The space utilization rate inside the battery affects the structural strength and energy density of the battery, and further affects the performance of the battery. Therefore, how to improve the performance of the battery is a technical problem that needs to be urgently solved in battery technology. Summary of the Invention [Means for solving the problem]

[0004] Summary of the Invention The present application provides a battery, a power consuming device, a method and an apparatus for manufacturing a battery, which can improve the structural strength and energy density of the battery, thereby improving the performance of the battery.

[0005] In a first aspect, a battery is provided, comprising: a plurality of battery cells arranged along a first direction; and a hanging wall connected to a first wall of each battery cell among the plurality of battery cells, wherein when the battery cells are installed in a power consumption device, the battery cells are located below the hanging wall, and the hanging wall is used to hang the battery cells, wherein a relationship between a size H of the hanging wall in a second direction and a weight M of the battery cells satisfies 0.04 mm / kg≦H / M≦100 mm / kg, and the second direction is perpendicular to the first wall.

[0006] In the embodiment of the present application, the first wall of each battery cell among the plurality of battery cells arranged along the first direction is connected to the hanging wall, and when the battery cell is installed in the power consumption device, the battery cell is located below the hanging wall, and the hanging wall is used to hang the battery cell, and the relationship between the size H of the hanging wall in the second direction and the weight M of the battery cell satisfies 0.04mm / kg≦H / M≦100mm / kg, and the second direction is perpendicular to the first wall. In this way, the first wall of the battery cell is directly connected to the hanging wall, and there is no need for an intermediate space, which can improve the space utilization rate of the battery, thereby improving the energy density of the battery, and the battery cell and the hanging wall are connected together to improve the structural strength of the battery. The weight M of the battery cell and the size H of the hanging wall in the second direction satisfy 0.04mm / kg≦H / M≦100mm / kg, and the size H of the hanging wall in the second direction is kept within a reasonable range, which not only avoids the waste of the internal space of the battery caused by H being too large, but also strengthens the connection between the battery cell and the hanging wall and improves the structural strength of the battery. Therefore, the technical solutions of the embodiments of the present application can improve the performance of the battery.

[0007] In a possible implementation, an electrode terminal is provided on the second wall of the battery cell, and the second wall and the first wall are provided opposite to each other with a gap along the second direction, or the second wall and the first wall are connected, and the second direction is parallel to the second wall. In this way, the first wall without the electrode terminal can be directly connected to the hanging wall, and the battery cell and the hanging wall are connected together, improving the overall structural strength of the battery, and there is no need for a gap between the first wall and the hanging wall, which improves the space utilization rate of the battery and further improves the energy density of the battery.

[0008] In a possible implementation, the size H of the hanging wall in the second direction is 0.2 mm to 20 mm. In this way, the size of the hanging wall in the second direction can be flexibly selected based on the weight M of the battery cell, or a corresponding suitable battery cell can be selected based on the size of the hanging wall in the second direction.

[0009] In a possible implementation, a cavity is provided inside the hanging wall, which can thus provide an expansion space for the battery cells.

[0010] In a possible implementation, the cavity is used to contain a fluid to regulate the temperature of the battery cell.

[0011] In a possible implementation, the battery further includes a reinforcing rib installed on a surface of the hanging wall that is away from the battery cell along the second direction, thus improving the structural strength of the hanging wall.

[0012] In a possible implementation, the reinforcing rib and the hanging wall are an integrally molded structure, thus making it easy to process and saving steps.

[0013] In a possible implementation, the relationship between the size H of the hanging wall in the second direction and the weight M of the battery cell further satisfies 0.1 mm / kg≦H / M≦20 mm / kg. In this way, the battery will not catch fire or explode, and the energy density of the battery can be met and the safety of the battery can be more effectively ensured.

[0014] In a possible implementation, the battery further includes a separator extending in the first direction and connected to a third wall of each of the plurality of battery cells, the third walls being two walls opposed to each other along the third direction of the battery cell, the third direction being perpendicular to the first direction and the second direction. In this way, it is not necessary to install structures such as side plates and beams in the battery, and the space utilization rate inside the battery is maximized, and the structural strength and energy density of the battery are also improved.

[0015] In a possible implementation, the third wall is the wall with the largest surface area of ​​the battery cell, thus improving the connection strength between the separator and the battery cell.

[0016] In a possible implementation, the size of the separator in the third direction is between 0.1 mm and 100 mm. In this way, the strength of the separator and the energy density of the battery can be taken into account.

[0017] In a possible implementation, the battery includes a plurality of rows of the battery cells and a plurality of the separators arranged along the first direction, and the plurality of rows of the battery cells and the plurality of the separators are alternately arranged in the third direction. In this way, the plurality of rows of the battery cells and the plurality of separators are connected to each other to form a single unit and are housed in a housing, which can further ensure the structural strength of the entire battery, thereby improving the performance of the battery.

[0018] In a possible implementation, the battery includes a plurality of battery modules, the battery modules including at least one row of a plurality of the battery cells and at least one of the separators arranged along the first direction, and the at least one row of the battery cells and the at least one of the separators are alternately arranged in the third direction.

[0019] In a possible implementation, the battery module includes N rows of the battery cells and N-1 separators, where the separators are disposed between two adjacent rows of the battery cells, and N is an integer greater than 1. In this way, the number of separators can be reduced and the energy density of the battery can be improved.

[0020] In a possible implementation, the battery modules are arranged along the third direction, and there is a gap between adjacent battery modules, thereby providing an expansion space for the battery cells.

[0021] In a possible embodiment, a fixing structure is provided at an end of the separator in the first direction, and the separator is fixed to the hanging wall via the fixing structure, thus further improving the structural strength of the battery.

[0022] In a possible implementation, the separator is bonded to the third wall. In this way, the battery has a simple structure and can be easily processed and assembled.

[0023] In a possible implementation, the first wall is glued to the hanging wall, such a connection allows for easy installation.

[0024] In a second aspect, there is provided a power consumer device, comprising a battery of the first aspect above or any possible realisation of the first aspect, the battery being adapted to provide electrical energy.

[0025] In a third aspect, a method for manufacturing a battery is provided, the method including the steps of providing a plurality of battery cells arranged along a first direction; and providing a hanging wall connected to a first wall of each battery cell among the plurality of battery cells, wherein when the battery cell is installed in a power consumption device, the battery cell is located below the hanging wall and the hanging wall is used to hang the battery cell, wherein a relationship between a size H of the hanging wall in a second direction and a weight M of the battery cell satisfies 0.04 mm / kg≦H / M≦100 mm / kg, and the second direction is perpendicular to the first wall.

[0026] In a fourth aspect, there is provided a battery manufacturing apparatus including a module for carrying out the method of the third aspect above.

[0027] In the embodiment of the present application, the first wall of each battery cell among the plurality of battery cells arranged along the first direction is connected to the hanging wall, and when the battery cell is installed in the power consumption device, the battery cell is located below the hanging wall, and the hanging wall is used to hang the battery cell, and the relationship between the size H of the hanging wall in the second direction and the weight M of the battery cell satisfies 0.04mm / kg≦H / M≦100mm / kg, and the second direction is perpendicular to the first wall. In this way, the first wall of the battery cell is directly connected to the hanging wall, and there is no need for an intermediate space, which can improve the space utilization rate of the battery, thereby improving the energy density of the battery, and the battery cell and the hanging wall are connected together to improve the structural strength of the battery. The weight M of the battery cell and the size H of the hanging wall in the second direction satisfy 0.04mm / kg≦H / M≦100mm / kg, and the size H of the hanging wall in the second direction is kept within a reasonable range, which not only avoids the waste of the internal space of the battery caused by H being too large, but also strengthens the connection between the battery cell and the hanging wall and improves the structural strength of the battery. Therefore, the technical solutions of the embodiments of the present application can improve the performance of the battery.

[0028] BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly explain the technical solutions of the embodiments of the present application, the following provides a brief description of the drawings that need to be used in the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on the drawings without requiring creative labor. [Brief description of the drawings]

[0029] [Figure 1] 1 is a schematic diagram of a vehicle according to an embodiment of the present application. [Diagram 2] FIG. 1 is a schematic diagram of a battery according to an embodiment of the present application. [Diagram 3] FIG. 2 is a schematic diagram of a battery cell according to an embodiment of the present application. [Figure 4] FIG. 1 is a schematic diagram of a battery according to an embodiment of the present application. [Diagram 5] 1 is a schematic diagram of a hanging wall according to an embodiment of the present application; [Figure 6] 1 is a schematic diagram of a hanging wall according to an embodiment of the present application; [Figure 7] 1 is a schematic diagram of a hanging wall according to an embodiment of the present application; [Figure 8] 1 is a schematic diagram of a hanging wall according to an embodiment of the present application; [Figure 9] 1 is a schematic diagram of a hanging wall according to an embodiment of the present application; [Figure 10] FIG. 1 is a schematic diagram of a battery according to an embodiment of the present application. [Figure 11] FIG. 1 is a schematic diagram of a battery according to an embodiment of the present application. [Figure 12] FIG. 1 is a schematic diagram of a battery module according to an embodiment of the present application. [Figure 13] FIG. 2 is a schematic diagram of a combination of a battery cell and a separator according to one embodiment of the present application. [Figure 14] FIG. 2 is a schematic diagram of a combination of a battery cell and a separator according to one embodiment of the present application. [Figure 15] FIG. 2 is a schematic diagram of a combination of a battery cell and a separator according to one embodiment of the present application. [Figure 16] 1 is a schematic diagram of a method for manufacturing a battery according to an embodiment of the present application. [Figure 17] FIG. 1 is a schematic diagram of a battery manufacturing device according to an embodiment of the present application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0030] In the drawings, the drawings are not drawn to scale.

[0031] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the embodiments of the present application will be described in more detail with reference to the drawings and examples. The detailed description of the following examples and the drawings are used to exemplarily explain the principles of the present application, and do not limit the scope of the present application, i.e., the present application is not limited to the described examples.

[0032] In the description of the present application, it is necessary to explain that, unless otherwise specified, all technical and scientific terms used are the same as those commonly understood by those skilled in the art, and the terms used are merely for describing specific embodiments and are not intended to limit the present application, and the terms "including", "having" and any variations thereof in the specification, claims and the brief description of the drawings of the present application are intended to cover non-exclusive inclusion. "Plural" means two or more, and the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", and "outer" is merely for ease of explanation and simplification of the present application, and does not indicate or imply that the devices or elements shown necessarily have a specific orientation and are constructed and operated in a specific orientation, and therefore should be understood not to limit the present application. In addition, terms such as "first", "second", and "third" are merely for explanation, and do not indicate or imply relative importance. "Vertical" is not strictly vertical, but is within a margin of error. "Parallel" is not strictly parallel, but is within a margin of error.

[0033] An "embodiment" referred to in this application means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of this application. The phrases appearing in various places in the specification do not necessarily refer to the same embodiment, nor are they mutually exclusive independent or alternative embodiments of other embodiments. Those skilled in the art can explicitly or implicitly understand that the embodiment described in this application can be combined with other embodiments.

[0034] Any directional terms appearing in the following description are the directions shown in the drawings, and do not limit the specific structure of the present application. In the description of the present application, it is necessary to explain that unless otherwise clearly specified and limited, the terms "attached", "connected" and "connected" should be understood in a broad sense, 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 communicated between two elements. Those skilled in the art can understand the specific meaning of the above terms in the present application according to the specific situation.

[0035] The term "and / or" in this application is merely for the purpose of explaining the relationship between related objects, and indicates that there are three relationships, for example, A and / or B can indicate three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally indicates that the related objects before and after it are in an "or" relationship.

[0036] In the present application, the battery cell includes a lithium ion secondary battery, a lithium ion primary battery, a lithium sulfur battery, a sodium lithium ion battery, a sodium ion battery, or a magnesium ion battery, etc., and the embodiments of the present application are not limited thereto. The battery cell may be cylindrical, flat, rectangular, or other shapes, etc., and the embodiments of the present application are not limited thereto. Battery cells are generally divided into three types according to packaging methods: cylindrical battery cells, prismatic battery cells, and soft-pack battery cells, and the embodiments of the present application are not limited thereto.

[0037] The battery referred to in the embodiments of the present application is a single physical module with one or more battery cells to provide higher voltage and capacity. For example, the battery referred to in the present application includes a battery pack and the like. The battery generally includes a housing for packaging one or more battery cells. The housing can prevent liquids and other foreign objects from adversely affecting the charging or discharging of the battery cells.

[0038] The battery cell includes an electrode assembly and an electrolyte, and the electrode assembly is composed of a positive plate, a negative plate, and a diaphragm. The battery cell mainly relies on the movement of metal ions between the positive plate and the negative plate to operate. The positive plate includes a positive current collector and a positive active material layer, the positive active material layer is applied to the surface of the positive current collector, the current collector without the positive active material layer protrudes beyond the current collector with the positive active material layer applied, and the current collector without the positive active material layer is used as a positive tab. Taking a lithium-ion battery as an example, the material of the positive current collector may be aluminum, and the positive active material may be lithium cobalt oxide, lithium iron phosphate, ternary lithium, lithium manganate, etc. The negative plate includes a negative current collector and a negative active material layer, the negative active material layer is applied to the surface of the negative current collector, the current collector without the negative active material layer protrudes beyond the current collector with the negative active material layer applied, and the current collector without the negative active material layer is used as a negative tab. The material of the negative electrode current collector may be copper, and the negative electrode active material may be carbon or silicon, etc. In order to ensure that high current flows without melting, the positive electrode tabs are multiple and stacked together, and the negative electrode tabs are multiple and stacked together. The material of the diaphragm may be polypropylene (PP) or polyethylene (PE), etc. In addition, the electrode assembly may have a wound structure or a stacked structure, and the embodiments of the present application are not limited thereto.

[0039] In order to meet various power demands, a battery may include multiple battery cells, and the multiple battery cells may be connected in series, parallel, or series-parallel, where series-parallel connection refers to a combination of series and parallel connections. Optionally, multiple battery cells may be first connected in series, parallel, or series-parallel to form a battery module, and then multiple battery modules may be connected in series, parallel, or series-parallel to form a battery. That is, multiple battery cells may directly form a battery, or may first form a battery module, and then the battery module may form a battery. The battery is further installed in a power consumption device to provide electrical energy to the power consumption device.

[0040] The development of battery technology requires simultaneous consideration of multiple design factors such as energy density, cycle life, discharge capacity, charge / discharge rate, and safety. When the internal space of a battery is constant, improving the utilization rate of the internal space of the battery is an effective means of improving the energy density of the battery. However, while improving the utilization rate of the internal space of the battery, other performance parameters of the battery, such as the structural strength of the battery, must also be considered.

[0041] In view of this, the embodiments of the present application provide a technical solution, in which the first wall of each battery cell among a plurality of battery cells arranged along a first direction is connected to a hanging wall, and when the battery cell is installed in an electric power consuming device, the battery cell is located below the hanging wall, and the hanging wall is used to hang the battery cell, and the relationship between the size H of the hanging wall in the second direction and the weight M of the battery cell satisfies 0.04mm / kg≦H / M≦100mm / kg, and the second direction is perpendicular to the first wall. In this way, the first wall of the battery cell is directly connected to the hanging wall, and there is no need for an intermediate space, which can improve the space utilization rate of the battery, thereby improving the energy density of the battery, and the battery cell and the hanging wall are connected together to improve the structural strength of the battery. The weight M of the battery cell and the size H of the hanging wall in the second direction satisfy 0.04mm / kg≦H / M≦100mm / kg, and the size H of the hanging wall in the second direction is kept within a reasonable range, which not only avoids the waste of the internal space of the battery caused by H being too large, but also strengthens the connection between the battery cell and the hanging wall and improves the structural strength of the battery. Therefore, the technical solutions of the embodiments of the present application can improve the performance of the battery.

[0042] The technical solutions described in the embodiments of the present application can be applied to various devices that use batteries, such as mobile phones, mobile devices, laptops, electric bicycles, electric toys, power tools, electric vehicles, ships, and spacecraft, for example, spacecraft including airplanes, rockets, space shuttles, and spaceships.

[0043] As can be understood, the technical solutions described in the embodiments of the present application are not only applicable to the devices described above, but also to all devices that use batteries. For the sake of simplicity, all of the following embodiments will be described using electric vehicles as an example.

[0044] For example, as shown in FIG. 1, a structural schematic diagram of a vehicle 1 according to an embodiment of the present application, the vehicle 1 may be a fuel 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, etc. A motor 40, a controller 30, and a battery 10 may be installed 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 installed at the bottom, front, or tail of the vehicle 1. The battery 10 is used to power the vehicle 1, for example, the battery 10 is used as an operating power source for the vehicle 1, and is used for the circuit system of the vehicle 1, for example, for the operating power needs during starting, navigation, and driving of the vehicle 1. In another embodiment of the present application, the battery 10 is not only used 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.

[0045] To meet various power usage demands, the battery 10 may include multiple battery cells. For example, as shown in FIG. 2, which is a structural schematic diagram of a battery 10 according to an embodiment of the present application, the battery 10 may include multiple battery cells 20. The battery 10 may further include a housing 11, the inside of which has a hollow structure, and the multiple battery cells 20 are accommodated in the housing 11. For example, the multiple battery cells 20 are combined in parallel connection, series connection, or series-parallel connection with each other and then placed in the housing 11.

[0046] Optionally, the battery 10 may further include other structures, and detailed description thereof will be omitted here. For example, the battery 10 may further include a bus member, which is used to realize electrical connection between the multiple battery cells 20, such as parallel connection, series connection, or series-parallel connection. Specifically, the bus member can realize electrical connection between the battery cells 20 by connecting with the electrode terminals of the battery cells 20. Furthermore, the bus member may 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 conducted through the housing via a conductive mechanism. Optionally, the conductive mechanism may belong to the bus member.

[0047] According to different power demands, the number of battery cells 20 may be set to any value. Multiple battery cells 20 can be connected in a series, parallel, or series-parallel manner to achieve large capacity or power. Since the number of battery cells 20 included in each battery 10 may be large, the battery cells 20 can be installed in groups for ease of installation, and each group of battery cells 20 forms a battery module. The number of battery cells 20 included in a battery module is not limited and can be set as required. A battery may include multiple battery modules, and these battery modules may be connected in a series, parallel, or series-parallel manner.

[0048] As shown in FIG. 3, it is a structural schematic diagram of a battery cell 20 according to an embodiment of the present application, the battery cell 20 includes one or more electrode assemblies 22, a case 211, and a cover plate 212. The case 211 and the cover plate 212 form a housing or a battery box 21. The wall of the case 211 and the cover plate 212 are both called the wall of the battery cell 20, and for a rectangular parallelepiped battery cell 20, the wall of the case 211 includes a bottom wall and four side walls. The case 211 is determined according to the shape after one or more electrode assemblies 22 are assembled, for example, the case 211 may be a hollow rectangular parallelepiped, cube, or cylinder, and one side of the case 211 has an opening through which one or more electrode assemblies 22 can be placed in the case 211. For example, when the case 211 is a hollow rectangular parallelepiped or cube, one side of the case 211 is an open side, that is, the side does not have a wall and communicates with the inside and outside of the case 211. When the case 211 is a hollow cylinder, the end surface of the case 211 is an opening surface, that is, the end surface does not have a wall and communicates between the inside and the outside of the case 211. The cover plate 212 covers the opening and is connected to the case 211 to form a sealed cavity in which the electrode assembly 22 is placed. The case 211 is filled with an electrolyte such as an electrolyte solution.

[0049] The battery cell 20 may further include two electrode terminals 214, which may be installed on the cover plate 212. The cover plate 212 is generally in a flat plate shape, and the two electrode terminals 214 are fixed to the flat surface of the cover plate 212, and the two electrode terminals 214 are respectively a positive electrode terminal 214a and a negative electrode terminal 214b. A connecting member 23 is installed corresponding to each electrode terminal 214, and the connecting member 23 is also called a current collecting member 23 and is located between the cover plate 212 and the electrode assembly 22, and is used to realize the electrical connection between the electrode assembly 22 and the electrode terminals 214.

[0050] As shown in FIG. 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, when the first tab 221a is a positive electrode tab, the second tab 222a is a negative electrode tab. The first tab 221a of one or more electrode assemblies 22 is connected to one electrode terminal via one connection member 23, and the second tab 222a of one or more electrode assemblies 22 is connected to another electrode terminal via another connection member 23. For example, the positive electrode terminal 214a is connected to the positive electrode tab via one connection member 23, and the negative electrode terminal 214b is connected to the negative electrode tab via another connection member 23.

[0051] In the battery cell 20, one or more electrode assemblies 22 may be installed according to actual usage needs. As shown in FIG. 3, four independent electrode assemblies 22 are installed in the battery cell 20.

[0052] A pressure release mechanism 213 may be further installed in the battery cell 20. The pressure release mechanism 213 is used to operate when the internal pressure or temperature of the battery cell 20 reaches a threshold value to release the internal pressure or temperature.

[0053] The pressure release mechanism 213 may be a variety of possible pressure release structures, and the embodiments of the present application are not limited thereto. For example, the pressure release mechanism 213 may be a temperature sensitive pressure release mechanism configured to melt when the internal temperature of the battery cell 20 in which the pressure release mechanism 213 is installed reaches a threshold value, and / or the pressure release mechanism 213 may be a pressure sensitive pressure release mechanism configured to burst when the internal air pressure of the battery cell 20 in which the pressure release mechanism 213 is installed reaches a threshold value.

[0054] 4 is a structural schematic diagram of a battery according to an embodiment of the present application. As shown in FIG. 4, the battery 10 includes a plurality of battery cells 20 arranged along a first direction and a hanging wall 50. The hanging wall 50 is connected to a first wall 201 of each of the plurality of 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 50, and the hanging wall 50 is used to hang the battery cells 20. The relationship between the size H of the hanging wall 50 in the second direction and the weight M of the battery cells 20 satisfies 0.04 mm / kg≦H / M≦100 mm / kg, and the second direction is perpendicular to the first wall 201.

[0055] The battery 10 includes a plurality of battery cells 20 arranged along a first direction, which may be the x-direction. The size H of the hanging wall 50 in the second direction may be the thickness of the hanging wall 50 in the second direction, which may be the z-direction.

[0056] The hanging wall 50 may be a top cover of a battery housing, or may be a part of a power consuming device, such as a vehicle chassis. When the hanging wall 50 is a vehicle chassis, the battery cells 20 are connected to the hanging wall 50, i.e., the battery cells 20 are connected to the vehicle chassis surface. The battery cells 20 are directly connected to the vehicle chassis surface, thus eliminating the need to install a top cover of the battery housing, saving the space occupied by the top cover of the battery housing, and improving the space utilization rate of the battery, thereby improving the energy density of the battery.

[0057] The hanging wall 50 is connected to the first wall 201 of each battery cell 20 among the plurality of battery cells 20, the first wall 201 is parallel to the first direction, and the second direction is perpendicular to the first wall 201, i.e., the second direction is perpendicular to the first direction. In this way, the hanging wall 50 is in direct surface contact with the battery cell 20, and no gap is required between them, which saves the space of the battery, and the surface contact between them allows them to be connected together, improving the structural strength of the battery.

[0058] The hanging wall 50 is used to hang the battery cell 20, and when the battery cell 20 is installed in an electric power consuming device, the battery cell 20 is located below the hanging wall 50. In this case, the first wall 201 of the battery cell 20 is connected to the bottom surface of the hanging wall 50, and the bottom surface of the hanging wall 50 may be the surface of the battery cell 20 close to the hanging wall 50 along the second direction, and the first wall 201 may be the surface of the battery cell 20 close to the hanging wall 50 along the second direction.

[0059] Optionally, the first wall 201 is the wall of the battery cell 20 with the largest surface area, thus providing a larger contact area between the hanging wall 50 and the battery cell 20, and ensuring the connection strength between the hanging wall 50 and the battery cell 20. In another embodiment, the hanging wall 50 may be connected to a wall of the battery cell 20 with a smaller surface area, and the embodiment of the present application is not limited thereto.

[0060] The relationship between the size H of the hanging wall 50 in the second direction and the weight M of the battery cell 20 satisfies 0.04 mm / kg≦H / M≦100 mm / kg.

[0061] If H / M>100 mm / kg, the size H of the hanging wall 50 in the second direction is larger, in which case the battery has stronger structural strength, but the hanging wall 50 occupies more space, resulting in a reduced space utilization rate inside the battery, and further reducing the energy density of the battery 10.

[0062] If H / M<0.04 mm / kg, the hanging wall 50 will not be able to meet the structural strength requirements of the battery. During use of the battery, the hanging wall 50 may deform in the direction of gravity and even break, causing the battery cells 20 to detach from the hanging wall 50, which may even result in safety issues such as fire or explosion.

[0063] In the embodiment of the present application, the first wall 201 of each battery cell 20 among the plurality of battery cells 20 arranged along the first direction is connected to the hanging wall 50, and when the battery cell 20 is installed in the power consumption device, the battery cell 20 is located below the hanging wall 50, and the hanging wall 50 is used to hang the battery cell 20, and the relationship between the size H of the hanging wall 50 in the second direction and the weight M of the battery cell 20 satisfies 0.04 mm / kg≦H / M≦100 mm / kg, and the second direction is perpendicular to the first wall 201. In this way, the first wall 201 of the battery cell 20 is directly connected to the hanging wall 50, and there is no need for a space in between, which can improve the space utilization rate of the battery 10, thereby improving the energy density of the battery 10, and the battery cell 20 and the hanging wall 50 are connected together, which can improve the structural strength of the battery 10. The weight M of the battery cells 20 and the size H of the hanging wall 50 in the second direction satisfy 0.04 mm / kg≦H / M≦100 mm / kg, so that the size H of the hanging wall 50 in the second direction is kept within a reasonable range, which not only prevents the internal space of the battery 10 from being wasted due to H being too large, but also makes the connection between the battery cells 20 and the hanging wall 50 stronger and improves the structural strength of the battery 10. Therefore, the technical solutions of the embodiments of the present application can improve the performance of the battery 10.

[0064] Optionally, in one embodiment of the present application, an electrode terminal 214 is installed on the second wall 202 of the battery cell 20, and the second wall 202 and the first wall 201 are installed opposite each other with a gap therebetween along the second direction, or the second wall 202 and the first wall 201 are connected, and the second direction is parallel to the second wall 202.

[0065] When the battery cell 20 is in use, the second direction may be parallel to the direction of gravity, and the electrode terminal 214 may face the ground along the direction of gravity. For example, the battery 10 includes a hanging wall 50 and a housing located below the hanging wall 50, the first wall 201 faces the hanging wall 50 and is connected to the hanging wall 50, the second wall 202 faces the bottom of the housing, and the electrode terminal 214 also faces the bottom of the housing, that is, faces the ground. In this way, the first wall 201 on which the electrode terminal 214 is not installed can be directly connected to the hanging wall 50, and the battery cell 20 and the hanging wall 50 are connected together, improving the overall structural strength of the battery 10, and eliminating the need for a gap between the first wall 201 and the hanging wall 50, improving the space utilization rate of the battery, and further improving the energy density of the battery 10.

[0066] Optionally, the electrode terminal 214 may further be installed on one of two walls of the battery cell 20 arranged opposite to each other along the first direction, that is, the second wall 202 is connected to the first wall 201, and the second direction is parallel to the second wall 202. For example, the electrode terminals 214 of the battery cells 20 in the same column arranged along the first direction are also arranged along the first direction.

[0067] Optionally, in one embodiment of the present application, the size H of the hanging wall 50 in the second direction is 0.2 mm to 20 mm. Optionally, the weight M of the battery cell 20 is 1 kg to 10 kg. In this way, the size of the hanging wall 50 in the second direction can be flexibly selected based on the weight M of the battery cell 20, or a corresponding appropriate battery cell 20 can be selected based on the size of the hanging wall 50 in the second direction.

[0068] Fig. 5 is a structural schematic diagram of a hanging wall according to an embodiment of the present application. Optionally, as shown in Fig. 5, the hanging wall 50 may have a plate-like structure such as a flat plate. In the plate-like structure, it is sufficient that the surface of the hanging wall 50 that contacts the first wall 201 is flat, and there is no specific limitation in other respects.

[0069] 6 is a structural schematic diagram of a hanging wall according to an embodiment of the present application. Optionally, as shown in FIG. 6, in an embodiment of the present application, a cavity 501 is provided inside the hanging wall 50. On the one hand, the cavity 501 can provide an expansion space for the battery cell 20, and on the other hand, the cavity 501 can further accommodate a fluid as a runner, thereby adjusting the temperature of the battery cell 20.

[0070] Optionally, a reinforcing plate 5011 may be installed in the cavity 501, and the reinforcing plate 5011 may extend along a first direction. On the one hand, the reinforcing plate 5011 may improve the structural strength of the hanging wall 50, and on the other hand, the reinforcing plate 5011 may form a plurality of runners for accommodating fluid inside the hanging wall 50, where the plurality of runners may communicate with each other or may be independent from each other.

[0071] The fluid may be liquid or gas, and the adjustment of temperature refers to heating or cooling the plurality of battery cells 20. When the temperature of the battery cells 20 is to be lowered, the cavity 501 can accommodate a cooling medium to adjust the temperature of the plurality of battery cells 20, and the fluid may be called a cooling medium or a cooling fluid, more specifically, a cooling liquid or a cooling gas. The fluid may also be used for heating, and the embodiment of the present application is not limited thereto. Optionally, the fluid may be circulating, thereby achieving a better effect of temperature adjustment. Optionally, the fluid may be water, a mixture of water and ethylene glycol, a refrigerant, air, etc.

[0072] 7 is a structural schematic diagram of a hanging wall according to an embodiment of the present application. Optionally, as shown in FIG. 7, a reinforcing portion 506 is provided on the hanging wall 50. The hanging wall 50 may include a first surface 504 and a second surface 505, the second surface 505 is connected to the first wall 201 of the battery cell 20, and the reinforcing portion 506 is provided on the first surface 504 and / or the second surface 505, so that the structural strength of the hanging wall 50 is improved by the reinforcing portion 506. Optionally, the reinforcing portion 506 may be a protrusion and / or a groove formed by punching the hanging wall, and the embodiment of the present application is not limited thereto.

[0073] 8 is a structural schematic diagram of a hanging wall according to an embodiment of the present application. Optionally, as shown in FIG. 8, in an embodiment of the present application, the battery 10 further includes a reinforcing rib 503, which is disposed on a surface of the hanging wall 50 away from the battery cell 20 along the second direction.

[0074] 8 , the surface of the hanging wall 50 that is away from the battery cell 20 in the second direction may be a first surface 504, and a reinforcing rib 503 is provided above the first surface 504. The reinforcing rib 503 improves the structural strength of the hanging wall 50.

[0075] However, the size of the reinforcing rib 503 in the second direction is H1, and when (H+H1) / H>2, the relationship between the size of H and the weight M of the battery cell 20 only needs to be considered as satisfying 0.04mm / kg≦H / M≦100mm / kg. The reinforcing rib 503 may belong to the battery 10 or may belong to a power consuming device such as a vehicle, and the reinforcing rib 503 may be installed according to the demand for the structural strength of the vehicle. When the size of the reinforcing rib 503 in the second direction is larger, the relationship between the size H1 of the reinforcing rib 503 and the weight M of the battery cell 20 is no longer considered. From another perspective, when the size H1 of the reinforcing rib 503 is small, for example, when (H+H1) / H≦2, the relationship between (H+H1) and M satisfies 0.04mm / kg≦(H+H1) / M≦100mm / kg.

[0076] The number and shape of the reinforcing ribs 503 may be specifically set based on the demands of the power consuming device or the installation form of the battery, and the embodiment of the present application does not specifically limit the same.

[0077] Alternatively, in one embodiment of the present application, the reinforcing rib 503 and the hanging wall 50 are an integrally molded structure, which is easy to process and saves processes. In other embodiments, the reinforcing rib 503 and the hanging wall 50 may be molded separately and then connected or assembled by bonding, welding, adhesion, machining, punching, etc., and the embodiment of the present application is not specifically limited thereto.

[0078] Optionally, the hanging wall 50 may be a single-layered plate structure or a multi-layered plate structure, and compared with the single-layered plate structure, the hanging wall 50 of the multi-layered plate structure has higher rigidity and strength.

[0079] FIG. 9 is a structural schematic diagram of a hanging wall according to an embodiment of the present application. Optionally, as shown in FIG. 9, the hanging wall 50 includes a first plate 51 and a second plate 52, the second plate 52 is connected to the first wall 201 of the battery cell 20, and the first plate 51 is installed opposite the second plate 52 along the second direction. The second plate 52 may be a flat plate, and the first plate 51 may not be a flat plate. The specific settings of the first plate 51, such as size, strength, etc., can be adjusted according to the specific demands of the power consumption device, and the embodiment of the present application does not limit this. The hanging wall 50 may further include a third plate, a fourth plate, etc., and the embodiment of the present application does not limit the number of plates included in the hanging wall 50.

[0080] 9, the size H of the hanging wall 50 may be the size of the second plate 52 in the second direction, and the size of the first plate 51 in the second direction is H2, and it is only necessary to consider that when (H+H2) / H>2, the relationship between H and M satisfies 0.04mm / kg≦H / M≦100mm / kg. When (H+H2) / H≦2, the relationship between (H+H2) and M satisfies 0.04mm / kg≦(H+H2) / M≦100mm / kg.

[0081] Optionally, in one embodiment of the present application, the relationship between the size H of the hanging wall 50 in the second direction and the weight M of the battery cell 20 further satisfies 0.1 mm / kg≦H / M≦20 mm / kg. In this way, the battery will not catch fire or explode, and the energy density of the battery 10 can be met and the safety of the battery can be more effectively ensured.

[0082] Fig. 10 is a structural schematic diagram of a battery according to an embodiment of the present application. Optionally, as shown in Fig. 10, in an embodiment of the present application, the battery 10 further includes a separator 101, the separator 101 extends along a first direction and is connected to a third wall 203 of each battery cell 20 among the plurality of battery cells 20, the third wall 203 is two walls facing each other along a third direction of the battery cell 20, and the third direction is perpendicular to the first direction and the second direction.

[0083] The third walls 203 are adjacent to the first wall 201 and the second wall 201, and the two third walls 203 are disposed opposite each other along a third direction, where the third direction may be the y direction.

[0084] Optionally, the battery cell 20 may further include two fourth walls 204 arranged opposite each other along the first direction, the fourth walls 204 being adjacent to the first wall 201, the second wall 202, and the third wall 203, and the fourth walls 204 of two adjacent battery cells 20 arranged along the first direction being opposite each other.

[0085] The separator 101 is connected to the third wall 203 of each battery cell 20, and thus the separator 101 and the battery cell 20 are integrally connected, improving the structural strength of the battery 10. In this case, it is not necessary to install structures such as side plates or beams inside the battery 10, and the space utilization rate inside the battery 10 can be maximized, improving the structural strength and energy density of the battery 10.

[0086] Optionally, the third wall 203 may be a wall of the battery cell 20 with the largest surface area, thus improving the connection strength between the separator 101 and the battery cell 20. In other embodiments, the third wall 203 may be a wall of the battery cell 20 with a smaller surface area, and the embodiments of the present application are not specifically limited thereto.

[0087] Optionally, in one embodiment of the present application, the size of the separator 101 in the third direction is 0.1 mm to 100 mm. In this way, the strength of the separator 101 and the energy density of the battery 10 can be taken into consideration.

[0088] Optionally, a hollow structure is provided inside the separator 101, which can be used to provide an expansion space for the battery cells 20 and can also serve as a runner to accommodate fluid and adjust the temperature of the battery cells. Optionally, a structural reinforcement material can be further provided inside the hollow structure, which can not only improve the strength of the separator 101 but also form a number of runners.

[0089] Alternatively, the separator 101 may be a metal separator, in which case an insulating layer is provided on the surface of the separator 101, which may be an insulating film or an insulating paint.

[0090] Optionally, separator 101 is a non-metallic separator, ie, separator 101 is a non-metallic insulating plate.

[0091] Optionally, in one embodiment of the present application, the battery 10 includes multiple rows of multiple battery cells 20 and multiple separators 101 arranged along the first direction, and the multiple rows of battery cells 20 and the multiple separators 101 are alternately installed in the third direction. In this way, the multiple rows of battery cells 20 and the multiple separators 101 are connected to each other to form a single unit and housed in a housing, which can further ensure the overall structural strength of the battery 10, thereby improving the performance of the battery.

[0092] The multiple rows of battery cells 20 and the multiple separators 101 are alternately installed in the third direction, and may be arranged in a battery cell-separator-battery cell manner or a separator-battery cell-separator manner along the third direction.

[0093] Fig. 11 is a structural schematic diagram of a battery according to an embodiment of the present application. Optionally, as shown in Fig. 11, in one embodiment of the present application, a battery 10 includes a plurality of battery modules 100, and the battery module 100 includes at least one row of a plurality of battery cells 20 and at least one separator 101 arranged along a first direction, and the at least one row of battery cells 20 and the at least one separator 101 are alternately installed in the third direction.

[0094] Fig. 12 is a schematic diagram of a battery module according to an embodiment of the present application. Optionally, as shown in Fig. 12, in one embodiment of the present application, a battery module 100 includes N rows of battery cells 20 and N-1 separators 101, and the separators 101 are disposed between two adjacent rows of battery cells 20, where N is an integer greater than 1, and in Fig. 12, N is 2. In this way, the number of separators 101 can be reduced, and the energy density of the battery 10 can be improved.

[0095] Fig. 13 is a schematic diagram of a combination of a battery cell and a separator according to an embodiment of the present application, and Fig. 14 is a schematic diagram of a combination of a battery cell and a separator according to an embodiment of the present application. Along the y direction, the number of separators 101 in Fig. 13 is one less than the number of columns of the battery cells 20, and the number of separators 101 in Fig. 14 is equal to the number of columns of the battery cells 20. Fig. 15 is a schematic diagram of a combination of a battery cell and a separator according to an embodiment of the present application, and as shown in Fig. 15, along the y direction, the number of separators 101 is one more than the number of columns of the battery cells 20.

[0096] Optionally, the battery module 100 may include N rows of battery cells 20 and N+1 separators 101, where the separators 101 are disposed between two adjacent rows of battery cells, and N is an integer greater than 1. Optionally, battery modules 100 having different arrangements of the battery cells 20 and the separators 101 can be combined with each other to form a battery 10.

[0097] Optionally, in one embodiment of the present application, multiple battery modules 100 are arranged along a third direction, with gaps between adjacent battery modules 100, thus providing expansion space for the battery cells 20.

[0098] Optionally, in one embodiment of the present application, a fixing structure 103 is provided at an end of the separator 101 in the first direction, and the separator 101 is fixed to the hanging wall 50 via the fixing structure 103. The fixing structure 103 may be directly connected to the hanging wall 50, or may be connected to a side wall of the housing 11 and then connected to the hanging wall 50. In this way, each battery cell 20 is fixed to the hanging wall 50 by the separator 101 and the fixing structure 103, and thus the fixed connection between the battery cells 20 and the hanging wall 50 is strengthened, the entire battery 10 is connected together, and the structural strength of the battery 10 is improved.

[0099] Optionally, the fixing structure may include a fixing plate 104. The fixing plate 104 is fixedly connected to an end of the separator 101, and is fixedly connected to the battery cell 20 located at the end of the separator 101. For example, for a rectangular parallelepiped battery cell 20, the fixing plate 104 can be vertically connected to the separator 101, and connected to the separator 101 and two adjacent side walls of the rectangular parallelepiped battery cell 20 respectively, thereby further enhancing the fixing effect of the battery cell 20.

[0100] Optionally, the fixed plate 104 can adopt the same material as the separator 101, such as metal, plastic or composite material. The thickness of the fixed plate 104 can be the same as that of the separator 101. The material or thickness of the fixed plate 104 can be different from that of the separator 101, for example, the fixed plate 104 can be installed with higher strength or thickness, and the embodiment of the present application is not limited thereto.

[0101] Optionally, the connection method between the separator 101 and the fixing plate 104 may be a connection method such as resistance welding, resistance riveting, SPR riveting, lock bolts or engagement, and the fixing plate 104 may be fixed to the hanging wall 50 by a connection method such as resistance welding, resistance riveting, SPR riveting, lock bolts or engagement, and the embodiments of the present application are not limited thereto.

[0102] Alternatively, the fixing plate 104 and the battery cell 20 may be fixedly connected to each other by an adhesive method, for example, by adhesively bonding with a structural adhesive, but the embodiment of the present application is not limited thereto.

[0103] Optionally, the fixing plate 104 includes a first connection portion 105 extending in a direction away from the battery cell 20 along the first direction, and the first connection portion 105 is used to connect the hanging wall 50. For example, taking the case of connecting the second surface 505 of the hanging wall 50 as an example, the first connection portion 105 is formed at a position close to the second surface 505 of the fixing plate 104, extending in a direction away from the battery cell 20, i.e., outward, and the second surface 505 is connected via the first connection portion 105.

[0104] The first connection portion 105 may be parallel to the second surface 505 of the hanging wall 50, and the area of ​​the first connection portion 105 may be set according to the fixing method of the side wall of the connected housing 11 in order to meet the required fixing effect.

[0105] Optionally, the first connection portion 105 may be formed by bending the fixing plate 104. For example, the first connection portion 105 may be formed by bending an edge of the fixing plate 104 close to the second surface 505 in a direction away from the battery cell 20. For example, the upper edge of the fixing plate 104 can be bent outward to form the first connection portion 105. In this way, the first connection portion 105 and the main body of the fixing plate 104 have an integral structure, thereby improving the connection performance.

[0106] Optionally, in one embodiment of the present application, the fixing plate 104 further includes a second connection portion 107 formed extending in a direction away from the battery cell 20 along the first direction, and the second connection portion 107 is used to connect the fixing plate 104 and the separator 101. For example, the second connection portion 107 may be formed at the connection position between the fixing plate 104 and the separator 101 by extending in a direction away from the battery cell 20, i.e., outward, and the fixing plate 104 is fixedly connected to the separator 101 via the second connection portion 107.

[0107] Optionally, in addition to connecting the separators 101, the second connection portion 107 can also simultaneously realize the connection between the fixing plates 104. For example, one fixing plate 104 is installed on each row of the battery cells 20, and the two fixing plates 104 of the separators 101 corresponding to the two rows of the battery cells 20 are fixed together via the second connection portion 107.

[0108] The second connection portion 107 may be parallel to the separator 101. The area of ​​the second connection portion 107 may be set according to the fixing method to achieve a desired fixing effect.

[0109] Optionally, in one embodiment of the present application, the separator 101 is glued to the third wall 203. The separator 101 and the third wall 203 are fixedly connected by glue, which has a simple structure and can be easily processed and assembled.

[0110] Optionally, the separator 101 may be further sandwiched between the battery cells 20 in adjacent rows by abutting against the third wall 203 .

[0111] Optionally, in one embodiment of the present application, the first wall 201 is glued to the hanging wall 50. This connection method makes it easy to install.

[0112] It is understood that relevant parts in each embodiment of the present application can be referred to each other, and detailed descriptions will be omitted for the sake of brevity.

[0113] In one embodiment of the present application, a power consumption device is further provided, which may include the battery 10 in the above embodiment. Optionally, the power consumption device may be a vehicle 1, a ship, a spacecraft, etc., and the embodiment of the present application is not limited thereto.

[0114] The battery 10 and the power consumption device of the embodiment of the present application have been described above. The manufacturing method and the device of the battery of the embodiment of the present application will be described below. For the parts not described in detail, the above embodiments can be referred to.

[0115] 16 shows a schematic flow chart of a method 300 for manufacturing a battery according to an embodiment of the present application. As shown in FIG. 16, the method 300 may include step 310 and step 320.

[0116] 310, providing a plurality of battery cells 20 arranged along a first direction.

[0117] 320, providing a hanging wall 50 connected to the first wall 201 of each battery cell 20 among the plurality of battery cells 20, where when the battery cell 20 is installed in a power consumption device, the battery cell 20 is located below the hanging wall 50, and the hanging wall 50 is used to hang the battery cell 20. The relationship between the size H of the hanging wall 50 in a second direction and the weight M of the battery cell 20 in a second direction satisfies 0.04 mm / kg≦H / M≦100 mm / kg, and the second direction is perpendicular to the first wall 201.

[0118] 17 is a schematic block diagram of a battery manufacturing equipment 400 according to an embodiment of the present application. As shown in FIG. 17, the battery manufacturing equipment 400 may include a first providing module 410 and a second providing module 420.

[0119] The first providing module 410 is used to provide a plurality of battery cells 20 arranged along a first direction.

[0120] The second providing module 420 is used for providing a hanging wall 50 connected to the first wall 201 of each battery cell 20 among the plurality of battery cells 20, and when the battery cell 20 is installed in a power consumption device, the battery cell 20 is located below the hanging wall 50, and the hanging wall 50 is used for hanging the battery cell 20. The relationship between the size H of the hanging wall 50 in the second direction and the weight M of the battery cell 20 satisfies 0.04 mm / kg≦H / M≦100 mm / kg, and the second direction is perpendicular to the first wall 201.

[0121] The following examples of the present application are illustrative and are used only to interpret the present application, and cannot be understood as limiting the present application. If no specific techniques or conditions are shown in the examples, the techniques or conditions are described in the literature of this field or in the product manual.

[0122] The test results for different sizes of hanging walls and different weights of battery cells are shown in Table 1. [Table 1]

[0123] Although the present application has been described with reference to the preferred embodiments, various modifications can be made and the elements therein can be replaced with equivalents without departing from the scope of the present application. In particular, as long as there is no structural contradiction, all technical features described in each embodiment can be arbitrarily combined. The present application is not limited to the specific embodiments disclosed in this specification, but includes all technical solutions falling within the scope of the claims. [Explanation of symbols]

[0124] 1 vehicle 10 batteries 11. Cabinet 20 Battery Cells 21 Battery box 22 Electrode Assembly 23 Current collecting member 30 Controller 40 Motor 50 Hanging wall 51 1st board 52 2nd board 100 Battery Module 101 Separator 103 Fixed structure 104 Fixed plate 105 First connection part 107 Second Connection 201 1st wall 202 Second wall 203 Third wall 204 4th wall 211 cases 212 Lid plate 213 Pressure Relief Mechanism 214 Electrode terminal 214a Positive electrode terminal 214b Negative electrode terminal 221 First Tab 222 Second Tab 400 Battery manufacturing equipment 410 First Offering Module 420 Secondary Offering Module 501 Cavity 503 Reinforcement rib 504 1st page 505 2nd page 506 Reinforcement 5011 Reinforcement plate

Claims

1. A battery, A plurality of battery cells arranged along a first direction; a hanging wall connected to a first wall of each of the plurality of battery cells, the battery cell being located below the hanging wall when the battery cell is installed in a power consumption device, and the hanging wall being used to hang the battery cell; A battery, wherein a relationship between a size H of the hanging wall in a second direction and a weight M of the battery cell satisfies 0.04 mm / kg≦H / M≦100 mm / kg, and the second direction is perpendicular to the first wall.

2. An electrode terminal is provided on the second wall of the battery cell, and the second wall and the first wall are disposed opposite each other with a gap therebetween along the second direction; or The battery of claim 1 , wherein the second wall is connected to the first wall and the second direction is parallel to the second wall.

3. 3. The battery according to claim 1, wherein the size H of the hanging wall in the second direction is 0.2 mm to 20 mm.

4. The battery according to any one of claims 1 to 3, wherein a cavity is provided inside the hanging wall.

5. The battery of claim 4 , wherein the cavity is adapted to contain a fluid to regulate a temperature of the battery cell.

6. The battery according to claim 1 , further comprising a reinforcing rib provided on a surface of the hanging wall that is away from the battery cell along the second direction.

7. 7. The battery of claim 6, wherein said reinforcing rib and said hanging wall are an integrally molded structure.

8. The battery according to claim 1 , wherein the relationship between the size H of the hanging wall in the second direction and the weight M of the battery cell further satisfies 0.1 mm / kg≦H / M≦20 mm / kg.

9. The battery of any one of claims 1 to 8, further comprising a separator extending along the first direction and connected to a third wall of each battery cell among the plurality of battery cells, the third wall being two walls opposing each other along the third direction of the battery cell, and the third direction being perpendicular to the first direction and the second direction.

10. The battery of claim 9 , wherein the third wall is the wall with the largest surface area of ​​the battery cell.

11. The battery according to claim 9 or 10, wherein the size of the separator in the third direction is 0.1 mm to 100 mm.

12. The battery according to any one of claims 9 to 11, wherein the battery includes a plurality of rows of the battery cells and a plurality of the separators arranged along the first direction, and the plurality of rows of the battery cells and the plurality of the separators are alternately installed in the third direction.

13. The battery according to any one of claims 9 to 11, wherein the battery includes a plurality of battery modules, the battery module includes at least one row of a plurality of the battery cells arranged along the first direction and at least one of the separators, and the at least one row of the battery cells and the at least one of the separators are alternately installed in the third direction.

14. 14. The battery of claim 13, wherein the battery module includes N rows of the battery cells and N-1 separators, the separators being installed between two adjacent rows of the battery cells, and N is an integer greater than 1.

15. The battery according to claim 13 or 14, wherein the plurality of battery modules are arranged along the third direction, and there is a gap between adjacent battery modules.

16. The battery according to any one of claims 9 to 15, wherein a fixing structure is provided at an end of the separator in the first direction, and the separator is fixed to the hanging wall via the fixing structure.

17. The battery of any one of claims 9 to 16, wherein the separator is adhered to the third wall.

18. The battery of any one of claims 1 to 17, wherein the first wall is adhered to the hanging wall.

19. A power consumer device, comprising a battery according to any one of claims 1 to 18, said battery being adapted to provide electrical energy.

20. A method for manufacturing a battery, comprising: providing a plurality of battery cells arranged along a first direction; providing a hanging wall connected to a first wall of each battery cell among the plurality of battery cells, the battery cell being located below the hanging wall when the battery cell is installed in a power consumption device, the hanging wall being used to hang the battery cell; a relationship between a size H of the hanging wall in a second direction and a weight M of the battery cell satisfies 0.04 mm / kg≦H / M≦100 mm / kg, and the second direction is perpendicular to the first wall.

21. A battery manufacturing device comprising: A first providing module for providing a plurality of battery cells arranged along a first direction; a second providing module adapted to provide a hanging wall connected to a first wall of each of the plurality of battery cells, the battery cells being positioned below the hanging wall when the battery cells are installed in a power consumption device, the hanging wall being adapted to hang the battery cells; a relationship between a size H of the hanging wall in a second direction and a weight M of the battery cell satisfies 0.04 mm / kg≦H / M≦100 mm / kg, and the second direction is perpendicular to the first wall.

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