CN216872137U - Battery and electric equipment - Google Patents
Battery and electric equipment Download PDFInfo
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- CN216872137U CN216872137U CN202220402874.XU CN202220402874U CN216872137U CN 216872137 U CN216872137 U CN 216872137U CN 202220402874 U CN202220402874 U CN 202220402874U CN 216872137 U CN216872137 U CN 216872137U
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Abstract
The embodiment of the application provides a battery and electric equipment, wherein the battery comprises a plurality of battery monomers which are arranged along a first direction, each battery monomer comprises a first wall and a second wall, the first wall is the wall with the largest surface area in the battery monomer, and the second wall is connected with the first wall; a separator extending in a first direction and connected to the first wall of each of the plurality of battery cells; the mounting wall is connected with the second wall of each battery monomer in the plurality of battery monomers, wherein the battery monomers are arranged below the mounting wall when the battery monomers are arranged on the electric equipment, and the mounting wall is used for mounting the battery monomers. According to the technical scheme, the performance of the battery can be improved.
Description
Technical Field
The application relates to the technical field of batteries, in particular to a battery and electric equipment.
Background
With the increasing environmental pollution, the new energy industry is receiving more and more attention. In the new energy industry, battery technology is an important factor regarding its development.
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. How to improve the performance of the battery is a technical problem to be solved urgently in the battery technology.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides a battery and electric equipment, can promote the structural strength and the energy density of battery to can promote the performance of battery.
In a first aspect, a battery is provided, comprising: the battery unit comprises a first wall and a second wall, wherein the first wall is the wall with the largest surface area in the battery unit, and the second wall is connected with the first wall; a separator extending in the first direction and connected to the first wall of each of the plurality of battery cells; the mounting wall, the mounting wall with every battery monomer in a plurality of battery monomers the second wall connection, wherein, when battery monomer set up the consumer, battery monomer is located mounting wall below, the mounting wall is used for the mounting battery monomer.
In the embodiment of the application, the partition board is arranged in the battery and connected with the first wall with the largest surface area of each battery monomer in the battery monomers arranged in the first direction, and the battery monomers are connected into a whole through the partition board, so that a side plate is not required to be arranged in the battery, structures such as a beam are not required to be arranged, the space utilization rate in the battery can be improved to a large extent, and the structural strength and the energy density of the battery are improved; the battery is also provided with a mounting wall connected with a second wall of each of the plurality of battery monomers arranged along the first direction, the second wall is connected with the first wall, and when the battery monomers are arranged on the electric equipment, the battery monomers are positioned below the mounting wall and mounted on the mounting wall. Like this, the free second wall of battery is direct to be connected with the mount wall, need not leave the space between mount wall and battery monomer, further promotes the inside space utilization of battery, has improved the energy density of battery, and battery monomer mount can improve the structural strength of battery on the mount wall simultaneously, consequently, the technical scheme of this application embodiment can promote the performance of battery.
In one possible implementation, a third wall of the battery cell is provided with an electrode terminal, the third wall being spaced apart from and opposite to the second wall in a second direction, the second direction being perpendicular to the second wall; or the third wall is connected with the second wall, and the first direction is perpendicular to the third wall.
The electrode terminal is disposed on a third wall, which is disposed opposite to the second wall in a second direction perpendicular to the second wall, or is connected to the second wall in a first direction perpendicular to the third wall. The electrode terminal is arranged on the wall of the non-mounting wall, so that no space needs to be reserved between the battery monomer and the mounting wall for the electrode terminal, the space utilization rate in the battery can be improved to a large extent, and the energy density of the battery is improved.
In one possible implementation, the separator is a sheet of metal material. This ensures the strength of the separator.
In one possible implementation, the surface of the separator is provided with an insulating layer. By providing an insulating layer on the surface of the partition plate, the surface of the partition plate connected to the first wall can be made an insulating surface.
In one possible implementation, the separator is a sheet of non-metallic material.
In a possible implementation, a first cavity is provided in the partition. The first cavity can reduce the weight of the separator while ensuring the strength of the separator, and in addition, the first cavity can enable the separator to have a larger compression space in the direction perpendicular to the first wall, so that a larger expansion space can be provided for the battery cell.
In one possible implementation, the first cavity is used to contain a fluid to regulate the temperature of the battery cell, which can effectively manage the temperature of the battery cell.
In a possible implementation manner, the dimension T1 of the partition board in the third direction is 0.1-100 mm, and the third direction is perpendicular to the first wall. When the size T1 of baffle in the third direction is too little, the rigidity of baffle is poor, can not effectively improve the structural strength of battery, when the size T1 of baffle in the third direction is too big, can occupy the inside too much space of battery, is unfavorable for improving the energy density of battery, consequently sets up the size T1 of baffle in the third direction and be 0.1 ~ 100mm, so both can ensure the energy density of battery, can improve the structural strength of battery again.
In one possible implementation, the dimension T1 of the separator in the third direction and the dimension T2 of the battery cell in the third direction satisfy: T1/T2 is more than 0 and less than or equal to 7. Therefore, the energy density of the battery can be guaranteed, and the safety performance of the battery can be guaranteed.
In one possible implementation manner, 0 < T1/T2 is less than or equal to 1, so that the energy density of the battery is further improved, and the safety performance of the battery is guaranteed.
In one possible implementation, the weight M1 of the separator and the weight M2 of the battery cell satisfy: M1/M2 is more than 0 and less than or equal to 20. Therefore, the weight energy density of the battery can be guaranteed, and the safety performance of the battery can be guaranteed.
In one possible implementation mode, 0.1 is less than or equal to M1/M2 is less than or equal to 1, so that the energy density of the battery is further improved, and the safety performance of the battery is guaranteed.
In one possible implementation, 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 is less than or equal to S1/S2 is less than or equal to 30. Therefore, the energy density of the battery can be guaranteed, and the safety performance of the battery can be guaranteed.
In one possible implementation mode, 2 ≦ S1/S2 ≦ 10, so as to further improve the energy density of the battery and guarantee the safety performance of the battery.
In one possible implementation, the specific heat capacity Q of the separator and the weight M1 of the separator satisfy: 0.02 KJ/(kg)2/℃)≤Q/M1≤100KJ/(kg2/° c). When Q/M1 is less than 0.02 KJ/(kg)2/° c), the separator can absorb more energy, resulting in too low temperature of the battery cell, and possibly generating lithium precipitation; Q/M1 > 100 KJ/(kg)2/° c), the heat conductivity of the partition is poor, and the heat cannot be taken away in time. 0.02 KJ/(kg)2/℃)≤Q/M1≤100KJ/(kg2/deg.c), the safety performance of the battery can be ensured.
In one possible implementation, 0.3 KJ/(kg)2/℃)≤Q/M1≤20KJ/(kg2/° c) to further improve the safety performance of the battery.
In a possible implementation manner, a second cavity is arranged inside the mounting wall. The second cavity can reduce the weight of the mounting wall while ensuring the strength of the mounting wall, and in addition, the second cavity can enable the mounting wall to have a larger compression space in the direction perpendicular to the second wall, so that a larger expansion space can be provided for the battery monomer.
In one possible implementation, the second cavity is used to contain a fluid to regulate the temperature of the battery cell, which can effectively manage the temperature of the battery cell.
In a possible implementation manner, the battery further includes a reinforcing rib, the reinforcing rib is disposed on the surface of the mounting wall, which is far away from the battery cell along a second direction, and the second direction is perpendicular to the second wall. The reinforcing rib can increase the strength of the mounting wall.
In a possible implementation manner, the reinforcing rib and the mounting wall are of an integrally formed structure, and the structure is easy to machine and assemble.
In one possible implementation manner, the battery includes a plurality of rows of the battery cells and the separators arranged along the first direction, wherein the plurality of rows of the battery cells and the separators are alternately arranged in a third direction, and the third direction is perpendicular to the first wall. Like this, multiseriate battery monomer and a plurality of baffle interconnect form a whole, hold in the box, can guarantee the holistic structural strength of battery to can promote the performance of battery.
In one possible implementation manner, the battery includes a plurality of battery modules, the battery modules include at least one column of the plurality of battery cells and at least one separator arranged along the first direction, and the at least one column of the battery cells and the at least one separator are alternately arranged in a third direction, which is perpendicular to the first wall.
In a possible implementation manner, the battery module includes N rows of the battery cells and N-1 separators, the separator is disposed between two adjacent rows of the battery cells, and N is an integer greater than 1. In this way, fewer separators may be provided in the battery, while at the same time ensuring that each cell is connected to a separator.
In one possible implementation manner, a plurality of the battery modules are arranged in the third direction with a gap between adjacent battery modules. The gap may provide an expansion space for the battery cell.
In one possible implementation manner, the end of the partition board in the first direction is provided with a fixing structure, and the partition board is fixed to the mounting wall through the fixing structure, so that the structural strength of the battery can be improved.
In a possible implementation, the partition is bonded to the first wall.
In a possible implementation, the mounting wall is bonded to the second wall.
In a second aspect, an electrical device is provided, comprising: the battery of the first aspect or any possible implementation manner of the first aspect, wherein the battery is used for providing electric energy.
In a third aspect, there is provided a method of making a battery, comprising: providing a plurality of battery cells arranged along a first direction, wherein each battery cell comprises a first wall and a second wall, the first wall is the wall with the largest surface area in the battery cell, and the second wall is connected with the first wall; providing a separator extending in the first direction and connected to the first wall of each of the plurality of battery cells; providing a mounting wall, the mounting wall with every battery monomer in a plurality of battery monomers the second wall connection, wherein, when battery monomer sets up in consumer, battery monomer is located mounting wall below, the mounting wall is used for mounting battery monomer.
In a fourth aspect, there is provided an apparatus for preparing a battery, comprising means for performing the method of the third aspect described above.
In the embodiment of the application, the partition board is arranged in the battery and connected with the first wall with the largest surface area of each battery monomer in the battery monomers arranged in the first direction, and the battery monomers are connected into a whole through the partition board, so that a side plate is not required to be arranged in the battery, structures such as a beam are not required to be arranged, the space utilization rate in the battery can be improved to a large extent, and the structural strength and the energy density of the battery are improved; the battery is also provided with a mounting wall connected with a second wall of each of the plurality of battery monomers arranged along the first direction, the second wall is connected with the first wall, and when the battery monomers are arranged on the electric equipment, the battery monomers are positioned below the mounting wall and mounted on the mounting wall. Like this, the free second wall of battery is direct to be connected with the mount wall, need not leave the space between mount wall and battery monomer, further promotes the inside space utilization of battery, has improved the energy density of battery, and battery monomer mount can improve the structural strength of battery on the mount wall simultaneously, consequently, the technical scheme of this application embodiment can promote the performance of battery.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for a person skilled in the art to obtain other drawings based on the drawings without any creative effort.
FIG. 1 is a schematic illustration of a vehicle according to an embodiment of the present disclosure;
fig. 2 is an exploded view of a battery according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a battery cell according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a battery disclosed in an embodiment of the present application;
FIG. 5 is a partial schematic view of a battery disclosed in an embodiment of the present application;
FIG. 6 is a schematic view of a separator and an insulating layer disclosed in an embodiment of the present application;
FIG. 7 is a schematic view of a baffle with a cavity according to an embodiment of the present disclosure;
FIG. 8 is a schematic view of a mounting wall disclosed in an embodiment of the present application;
FIG. 9 is a schematic illustration of a reinforcing bar according to an embodiment of the present disclosure;
fig. 10 is a schematic structural view of a battery disclosed in an embodiment of the present application;
fig. 11 is a schematic view of a method of making a battery according to an embodiment of the present application;
fig. 12 is a schematic view of an apparatus for manufacturing a battery according to an embodiment of the present application.
In the drawings, the drawings are not necessarily to scale.
Detailed Description
Embodiments of the present application will be described in further detail below with reference to the drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the application and are not intended to limit the scope of the application, i.e., the application is not limited to the described embodiments.
In the description of the present application, it is to be noted that, unless otherwise specified, all technical and scientific terms used have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terminology used is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures, are intended to cover non-exclusive inclusions; "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," and the like, indicate an orientation or positional relationship that is merely for convenience in describing the application and to simplify the description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the application. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. "vertical" is not strictly vertical, but is within the tolerance of the error. "parallel" is not strictly parallel but within the tolerance of the error.
Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the specification. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by a person skilled in the art that the embodiments described herein can be combined with other embodiments.
The following description is given with the directional terms as they are used in the drawings and not intended to limit the specific structure of the present application. In the description of the present application, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
The term "and/or" in this application is only one kind of association relationship describing the associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in this application generally indicates that the preceding and following associated objects are in an "or" relationship.
In the present application, the battery cell may include a lithium ion secondary battery, a lithium ion primary battery, a lithium sulfur battery, a sodium lithium ion battery, a sodium ion battery, a magnesium ion battery, or the like, which is not limited in the embodiments of the present application. The battery cell may be a cylinder, a flat body, a rectangular parallelepiped, or other shapes, which is not limited in the embodiments of the present application. The battery cells are generally divided into three types in an encapsulation manner: the single battery of cylindricality battery, square battery monomer and laminate polymer battery monomer, this application embodiment is also not limited to this.
Reference to a battery in embodiments of the present application refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity. For example, the battery referred to in the present application may include a battery pack and the like. Batteries generally include a case for enclosing one or more battery cells. The box can avoid liquid or other foreign matters to influence the charging or discharging of battery monomer.
The battery monomer comprises an electrode assembly and electrolyte, wherein the electrode assembly comprises a positive plate, a negative plate and an isolating membrane. The battery cell mainly depends on metal ions moving between the positive plate and the negative plate to work. The positive plate comprises a positive current collector and a positive active substance layer, wherein the positive active substance layer is coated on the surface of the positive current collector, the current collector which is not coated with the positive active substance layer protrudes out of the current collector which is coated with the positive active substance layer, and the current collector which is not coated with the positive active substance layer is used as a positive pole lug. 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 cobaltate, lithium iron phosphate, ternary lithium, lithium manganate, or the like. The negative pole piece includes negative current collector and negative pole active substance layer, and the negative pole active substance layer coats in the surface of negative current collector, and the mass flow body protrusion in the mass flow body of coating the negative pole active substance layer of uncoated negative pole active substance layer, the mass flow body of uncoated negative pole active substance layer is as negative pole utmost point ear. The material of the negative electrode current collector may be copper, and the negative electrode active material may be carbon, silicon, or the like. In order to ensure that the fuse is not fused when a large current is passed, the number of the positive electrode tabs is multiple and the positive electrode tabs are stacked together, and the number of the negative electrode tabs is multiple and the negative electrode tabs are stacked together. The material of the isolation film can be polypropylene (PP), Polyethylene (PE) or the like. In addition, the electrode assembly may have a winding structure or a lamination structure, and the embodiment of the present application is not limited thereto.
In order to meet different power requirements, a battery may include a plurality of battery cells, wherein the plurality of battery cells may be connected in series or in parallel or in series-parallel, and the series-parallel refers to a mixture of series connection and parallel connection. Alternatively, a plurality of battery cells may be connected in series or in parallel or in series-parallel to form a battery module, and a plurality of battery modules may be connected in series or in parallel or in series-parallel to form a battery. That is, a plurality of battery cells may directly constitute a battery, or a battery module may be first constituted and then a battery may be constituted. The battery is further arranged in the electric equipment to provide electric energy for the electric equipment.
The development of battery technology should take into consideration various design factors such as energy density, cycle life, discharge capacity, charge and discharge rate, safety, etc. Under the condition that the internal space of the battery is fixed, the utilization rate of the internal space of the battery is improved, and the method is an effective means for improving the energy density of the battery. However, while improving the utilization of the internal space of the battery, there is a possibility that the structural strength of the battery may be reduced. For example, a beam for mounting a battery module is generally provided inside a case of a battery, and a side plate and an end plate are provided in a battery module. The beams, the side plates and the end plates occupy the internal space of the battery while realizing the fixation of the battery. However, if the beams, the side plates, and the end plates are not provided, the structural strength of the battery is insufficient, and the performance of the battery is affected.
In view of this, the present application provides a technical solution, in the present application, a partition is disposed in a battery and connected to a first wall having a largest surface area of each of a row of a plurality of battery cells arranged along a first direction, and the plurality of battery cells are connected into a whole through the partition, in this case, a side plate is not required to be disposed in the battery, and a beam or other structures are not required to be disposed, so that a space utilization rate inside the battery can be increased to a large extent, and a structural strength and an energy density of the battery can be increased; the battery is also provided with a mounting wall connected with a second wall of each of the plurality of battery monomers arranged along the first direction, the second wall is connected with the first wall, and when the battery monomers are arranged on the electric equipment, the battery monomers are positioned below the mounting wall and mounted on the mounting wall. Like this, the free second wall of battery is direct to be connected with the mount wall, need not leave the space between mount wall and battery monomer, further promotes the inside space utilization of battery, has improved the energy density of battery, and battery monomer mount can improve the structural strength of battery on the mount wall simultaneously, consequently, the technical scheme of this application embodiment can promote the performance of battery.
The technical scheme described in the embodiment of the application is applicable to various devices using batteries, such as mobile phones, portable devices, notebook computers, battery cars, electric toys, electric tools, electric vehicles, ships, spacecrafts and the like, and the spacecrafts comprise airplanes, rockets, space shuttles, spacecrafts and the like.
It should be understood that the technical solutions described in the embodiments of the present application are not limited to be applied to the above-described devices, but may also be applied to all devices using batteries, and for brevity of description, the following embodiments are all described by taking an electric vehicle as an example.
For example, as shown in fig. 1, which is a schematic structural diagram of a vehicle 1 according to an embodiment of the present disclosure, the vehicle 1 may be a fuel-oil vehicle, a gas-fired vehicle, or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid electric vehicle, or an extended range vehicle. The vehicle 1 may be provided with a motor 40, a controller 30 and a battery 10, the controller 30 being configured to control the battery 10 to supply power to the motor 40. For example, the battery 10 may be provided at the bottom or the head or tail of the vehicle 1. The battery 10 may be used for power supply of the vehicle 1, for example, the battery 10 may be used as an operation power supply of the vehicle 1 for a circuit system of the vehicle 1, for example, for power demand for operation at the start, navigation, and running of the vehicle 1. In another embodiment of the present application, the battery 10 may be used not only as an operation power source of the vehicle 1 but also as a driving power source of the vehicle 1 instead of or in part of fuel or natural gas to provide driving power to the vehicle 1.
In order to meet different power usage requirements, the battery 10 may include a plurality of battery cells. For example, as shown in fig. 2, the battery 10 may include a plurality of battery cells 20 for a structural schematic diagram of the battery 10 according to an embodiment of the present disclosure. The battery 10 may further include a case 11, the inside of the case 11 is a hollow structure, and the plurality of battery cells 20 are accommodated in the case 11. For example, a plurality of battery cells 20 are connected in parallel or in series or in a combination of series and parallel to each other and then placed in the case 11.
Optionally, the battery 10 may also include other structures, which are not described in detail herein. For example, the battery 10 may further include a bus member for achieving electrical connection between the plurality of battery cells 20, such as parallel connection or series-parallel connection. Specifically, the bus member may achieve electrical connection between the battery cells 20 by connecting electrode terminals of the battery cells 20. Further, the bus bar member may be fixed to the electrode terminals of the battery cells 20 by welding. The electric energy of the plurality of battery cells 20 can be further led out through the box body by the conductive mechanism. Alternatively, the conductive means may also belong to the bus bar member.
The number of the battery cells 20 may be set to any number according to different power requirements. A plurality of battery cells 20 may be connected in series, parallel, or series-parallel to achieve greater capacity or power. Since the number of the battery cells 20 included in each battery 10 may be large, the battery cells 20 may be arranged in groups for convenience of installation, each group of the battery cells 20 constituting a battery module. The number of the battery cells 20 included in the battery module is not limited and may be set as required. The battery may include a plurality of battery modules, which may be connected in series, parallel, or series-parallel.
As shown in fig. 3, which is a schematic structural diagram of a battery cell 20 according to an embodiment of the present disclosure, the battery cell 20 includes one or more electrode assemblies 22, a case 211, and a cover plate 212. The housing 211 and cover 212 form a housing or battery compartment 21. The walls of the housing 211 and the cover plate 212 are referred to as the walls of the battery cell 20, wherein for the cuboid battery cell 20, the walls of the housing 211 include a bottom wall and four side walls. The case 211 is determined according to the shape of one or more electrode assemblies 22 after combination, for example, the case 211 may be a hollow rectangular parallelepiped, or a square, or a cylinder, and one of the faces of the case 211 has an opening so that one or more electrode assemblies 22 can be placed in the case 211. For example, when the housing 211 is a hollow rectangular parallelepiped or square, one of the planes of the housing 211 is an open plane, i.e., the plane has no wall body so that the housing 211 communicates inside and outside. When the housing 211 may be a hollow cylinder, the end surface of the housing 211 is an open surface, i.e., the end surface has no wall body so that the housing 211 is communicated with the inside and the outside. The cap plate 212 covers the opening and is connected with the case 211 to form a closed cavity in which the electrode assembly 22 is placed. The case 211 is filled with an electrolyte, such as an electrolytic solution.
The battery cell 20 may further include two electrode terminals 214, and the two electrode terminals 214 may be disposed on the cap plate 212. The cap plate 212 is generally in the shape of a flat plate, and two electrode terminals 214 are fixed to the flat plate surface of the cap plate 212, the two electrode terminals 214 being a positive electrode terminal 214a and a negative electrode terminal 214b, respectively. One connecting member 23, which may also be referred to as a current collecting member 23, is disposed at each of the electrode terminals 214, between the cap plate 212 and the electrode assembly 22, for electrically connecting the electrode assembly 22 and the electrode terminals 214.
As shown in fig. 3, each electrode assembly 22 has a first tab 221a and a second tab 222 a. The first tab 221a and the second tab 222a have opposite polarities. 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 with one electrode terminal by one connecting member 23, and the second tab 222a of one or more electrode assemblies 22 is connected with the other electrode terminal by the other connecting member 23. For example, the positive electrode terminal 214a is connected to a positive electrode tab through one connecting member 23, and the negative electrode terminal 214b is connected to a negative electrode tab through the other connecting member 23.
In the battery cell 20, the electrode assembly 22 may be provided singly or in plurality according to actual use requirements, and as shown in fig. 3, 4 independent electrode assemblies 22 are provided in the battery cell 20.
The battery cell 20 may further include a pressure relief mechanism 213. The pressure relief mechanism 213 is actuated to relieve the internal pressure or temperature of the battery cell 20 when the internal pressure or temperature reaches a threshold value.
The pressure relief mechanism 213 may be any of various possible pressure relief structures, which are not limited in the embodiments of the present application. For example, the pressure relief mechanism 213 may be a temperature-sensitive pressure relief mechanism configured to be able to melt when the internal temperature of the battery cell 20 provided with the pressure relief mechanism 213 reaches a threshold value; and/or, pressure relief mechanism 213 may be a pressure sensitive pressure relief mechanism configured to rupture when the internal air pressure of battery cell 20 in which pressure relief mechanism 213 is disposed reaches a threshold value.
Fig. 4 shows a schematic diagram of the structure of the battery 10 according to an embodiment of the present application. As shown in fig. 4, the battery 10 includes a plurality of battery cells 20 arranged in the first direction x, a separator 101, and a mounting wall 204.
The first direction x is an arrangement direction of a row of the battery cells 20 in the battery 10. That is, a row of the battery cells 20 in the battery 10 is arranged in the x direction.
The battery cell 20 includes a first wall 201 and a second wall 201, the first wall 201 is a wall having a largest surface area in the battery cell 20, and the second wall 202 is connected to the first wall 201. The separator 101 extends in the first direction x and is connected to the first wall 201 of each of the plurality of battery cells 20.
The battery cell 20 may include a plurality of walls, and the first wall 201 having the largest surface area in the battery cell 20 is connected to the separator 101. That is, the first wall 201 of the battery cell 20 faces the separator 101, i.e., the first wall 201 of the battery cell 20 is parallel to the first direction x.
The separator 101 is connected to the first wall 201, which is the largest surface area of the battery cell 20, so that the contact area between the separator 101 and the battery cell 20 is large, and the connection strength between the separator 101 and the battery cell 20 can be ensured.
The mounting wall 204 is connected to the second wall 202 of each of the plurality of battery cells 20, wherein when the battery cell 20 is disposed in the electric device, the battery cell 20 is located below the mounting wall 204, and the mounting wall 204 is used for mounting the battery cell 20.
The mounting wall 204 may be a top cover of the battery 10 or may be a part of the electric device, such as a chassis of the vehicle 1. When the mounting wall 204 is a 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 a chassis surface of the vehicle 1. The battery cell 20 is directly connected to the chassis surface of the vehicle, so that the upper case cover of the battery 10 is not required, the space occupied by the upper case cover of the battery 10 is saved, the space utilization rate of the battery 10 is improved, and the energy density of the battery 10 is improved.
In the embodiment of the present application, the partition plate 101 is disposed in the battery 10 and connected to the first wall 201 with the largest surface area of each battery cell 20 in the row of the plurality of battery cells 20 arranged along the first direction x, and the plurality of battery cells 20 are connected into a whole through the partition plate 101, in this case, no side plate is disposed in the battery 10, or no beam or other structure is disposed, so that the space utilization rate inside the battery 10 can be greatly improved, and the structural strength and energy density of the battery 10 can be improved; the battery 10 further includes a mounting wall 204 connected to a second wall 202 of each of the plurality of 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 disposed in the electric device, the battery cell 20 is located below the mounting wall 204 and mounted on the mounting wall 204. Like this, the second wall 202 of battery monomer 20 is direct to be connected with the mount wall 204, need not leave the space between mount wall 204 and battery monomer 20, further promotes the inside space utilization of battery 10, has improved the energy density of battery 10, and battery monomer 20 mounts on mount wall 204 simultaneously, can improve the structural strength of battery 10, consequently, the technical scheme of this application embodiment can promote the performance of battery 10.
Alternatively, in one embodiment of the present application, as shown in fig. 5 (a), the third wall 203 of the battery cell 20 is provided with the electrode terminal 214, and the third wall 203 is spaced apart from and disposed opposite to the second wall 202 in the second direction z perpendicular to the second wall 202.
Alternatively, in another embodiment of the present application, as shown in fig. 5 (b), the third wall 203 of the battery cell 20 is provided with the electrode terminal 214, the third wall 203 is connected to the second wall 202, and the first direction x is perpendicular to the third wall 203.
The electrode terminal 214 is disposed on the third wall 203, the third wall 203 being spaced apart from and disposed opposite to the second wall 202 along a second direction z perpendicular to the second wall 202, or the third wall 203 being connected to the second wall 202 with the first direction x perpendicular to the third wall 203. That is, the electrode terminal 214 is disposed on the wall of the non-mounting wall 204, so that a space for the electrode terminal 214 does not need to be reserved between the battery cell 20 and the mounting wall 204, and thus the space utilization rate inside the battery 10 can be greatly improved, and the energy density of the battery 10 can be improved.
Alternatively, in one embodiment of the present application, the separator 101 may be a plate of metal material. That is, the separator 101 is entirely made of a metal material. In this case, an insulating layer is provided on the surface of the separator 101. Alternatively, the insulating layer may be an insulating film adhered to the surface of the separator 101 or an insulating varnish coated on the surface of the separator 101.
As shown in fig. 6, the surface of the separator 101 is provided with an insulating layer 102. With this arrangement, the separator 101 is made of a metal material to ensure the strength of the separator 101, and the insulating layer 102 can make the surface of the separator 101 connected to the first wall 201 an insulating surface.
Alternatively, in one embodiment of the present application, the baffle 101 may be a sheet of non-metallic material. That is, the entire separator 101 is made of a non-metallic insulating material.
Optionally, in an embodiment of the present application, as shown in fig. 7, a first cavity 1011 may be disposed in the partition 101. The first cavity 1011 can reduce the weight of the partition 101 while securing the strength of the partition 101. In addition, the first cavity 1011 may allow the separator 101 to have a large compression space in the third direction y, thereby providing a large expansion space for the battery cell 20.
Optionally, in one embodiment of the present application, the first cavity 1011 may be used to contain a fluid to regulate the temperature of the battery cell 20.
The fluid may be a liquid or a gas, and adjusting the temperature means heating or cooling the plurality of battery cells 20. In the case of cooling the battery cells 20, the first cavity 1011 may contain a cooling medium to regulate the temperature of the plurality of battery cells 20, and at this time, the fluid may also be referred to as a cooling medium or a cooling fluid, and more specifically, may be referred to as a cooling liquid or a cooling gas. In addition, the fluid may also be used for heating, which is not limited in the embodiments of the present application. Alternatively, the fluid may be circulated for better temperature regulation. Alternatively, the fluid may be water, a mixture of water and glycol, refrigerant, air, or the like.
Optionally, in an embodiment of the present application, the dimension T1 of the partition board 101 in the third direction y is 0.1-100 mm.
When the size T1 of the separator 101 in the third direction y is too small, the rigidity of the separator 101 is poor, and the structural strength of the battery 10 cannot be effectively improved, and when the size T1 of the separator 101 in the third direction y is too large, the separator 101 occupies too much space inside the battery 10, which is not beneficial to improving the energy density of the battery 10, so that the size T1 of the separator 101 in the third direction y is set to be 0.1-100 mm, which can not only ensure the energy density of the battery 10, but also improve the structural strength of the battery 10.
Optionally, in an embodiment of the present application, the dimension T1 of the separator 101 in the third direction y and the dimension T2 of the battery cell 20 in the third direction y satisfy: T1/T2 is more than 0 and less than or equal to 7.
When T1/T2 is too large, the partition 101 occupies a large space, affecting the energy density. In addition, the separator 101 conducts heat too quickly to the battery cells 20, which may also create safety issues. For example, when one battery cell 20 is thermally runaway, it is possible to cause thermal runaway of other battery cells 20 connected to the same separator 101. When T1/T2 is more than 0 and less than or equal to 7, the energy density of the battery 10 can be guaranteed, and the safety performance of the battery 10 can be guaranteed.
Optionally, in an 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 may further satisfy 0 < T1/T2 ≦ 1, so as to further increase the energy density of the battery 10 and ensure the safety performance of the battery 10.
Optionally, in an embodiment of the present application, the weight M1 of the separator 101 and the weight M2 of the battery cell 20 satisfy: M1/M2 is more than 0 and less than or equal to 20.
When M1/M2 is too large, the weight energy density is lost. When M1/M2 is more than 0 and less than or equal to 20, the weight energy density of the battery 10 can be guaranteed, and the safety performance of the battery 10 can be guaranteed.
Optionally, in an embodiment of the present application, the weight M1 of the separator 101 and the weight M2 of the battery cell 20 may further satisfy 0.1 ≦ M1/M2 ≦ 1, so as to further increase the energy density of the battery 10 and ensure the safety performance of the battery 10.
Alternatively, in one embodiment of the present application, the area S1 of the surface of the separator 101 connected to the first walls 201 of the plurality of battery cells 20 and the area S2 of the first walls 201 satisfy: 0.2 is less than or equal to S1/S2 is less than or equal to 30.
S1 is the total area of the side surface of the separator 101 to which the battery cell 20 is connected. When S1/S2 is too large, the energy density is affected. When S1/S2 is too small, the heat conduction effect is too poor, and the safety performance is affected. When S1/S2 is not less than 0.2 and not more than 30, the energy density of the battery 10 can be guaranteed, and the safety performance of the battery 10 can be guaranteed.
Optionally, in an embodiment of the present application, the area S1 of the surface of the separator 101 connected to the first walls 201 of the plurality of battery cells 20 and the area S2 of the first walls 201 may further satisfy 2 ≦ S1/S2 ≦ 10, so as to further increase the energy density of the battery 10 and secure the safety performance of the battery 10.
Alternatively, in one embodiment of the present application, the specific heat capacity Q of the separator 101 and the weight M1 of the separator 101 satisfy: 0.02 KJ/(kg)2/℃)≤Q/M1≤100KJ/(kg2/℃)。
When Q/M1 is less than 0.02 KJ/(kg)2/deg.C), the diaphragm 101 will absorb more energy, causing electricity to formCell body 20 is at too low a temperature, potentially resulting in lithium precipitation; Q/M1 > 100 KJ/(kg)2/° c), the heat transfer capability of the partition 101 is poor, and the heat cannot be taken away in time. 0.02 KJ/(kg)2/℃)≤Q/M1≤100KJ/(kg2/deg.c), the safety performance of the battery 10 can be ensured.
Alternatively, in an embodiment of the present application, the specific heat capacity Q of the separator 101 and the weight M1 of the separator 101 may further satisfy 0.3 KJ/(kg)2/℃)≤Q/M1≤20KJ/(kg2/° c) to further improve the safety of the battery 10.
Optionally, in an embodiment of the present application, as shown in fig. 8, the mounting wall 204 may be provided with a second cavity 2041 inside. The second cavity 2041 can reduce the weight of the mounting wall 204 while ensuring the strength of the mounting wall 204. In addition, the second cavity 2041 may allow the mounting wall 204 to have a larger compression space in the second direction z, so that a larger expansion space may be provided for the battery cell 20.
Optionally, in one embodiment of the present application, the second cavity 2041 may be used to contain a fluid to regulate the temperature of the battery cell 20.
The fluid may be a liquid or a gas, and adjusting the temperature means heating or cooling the plurality of battery cells 20. In the case of cooling the battery cells 20, the second cavity 2041 may contain a cooling medium to regulate the temperature of the plurality of battery cells 20, and at this time, the fluid may also be referred to as a cooling medium or a cooling fluid, and more specifically, may be referred to as a cooling liquid or a cooling gas. In addition, the fluid may also be used for heating, which is not limited in the embodiments of the present application. Alternatively, the fluid may be circulated for better temperature regulation. Alternatively, the fluid may be water, a mixture of water and glycol, refrigerant, air, or the like.
Optionally, in an embodiment of the present application, a reinforcing member 2042 may be further disposed in the second cavity 2041, so as to enhance the strength of the mounting wall 204.
Optionally, in an embodiment of the present application, as shown in fig. 9, the battery 10 further includes a stiffener 205, and the stiffener 205 is disposed on a surface of the mounting wall 204 away from the battery cell 20 in the second direction z.
Optionally, in an embodiment of the present application, the stiffener 205 and the mounting wall 204 are an integral structure. The integrally formed structure is easy to machine and assemble, and can be formed in the modes of splicing, welding, bonding, machining, stamping and the like, and the structure is not limited in the application.
Alternatively, in an embodiment of the present application, the battery 10 includes a plurality of rows of the plurality of battery cells 20 and the plurality of separators 101 arranged along the first direction x, wherein the plurality of rows of the battery cells 20 and the plurality of separators 101 are alternately arranged in a third direction y, which is perpendicular to the first wall 201. That is, the plurality of rows of the battery cells 20 and the plurality of separators 101 may be provided in accordance with the separator 101, the row of the battery cells 20, the separator 101 …, or the row of the battery cells 20, the separator 101, the row of the battery cells 20 …. Like this, multiseriate battery monomer 20 and a plurality of baffle 101 interconnect form a whole, hold in box 11, can enough carry out effectual heat-conduction to each battery monomer 20, can guarantee the holistic structural strength of battery 10 again to can promote the performance of battery 10.
Fig. 10 shows a schematic view of the structure of a battery 10 according to another embodiment of the present application. As shown in fig. 10, the battery 10 may include a plurality of battery modules 100, the battery modules 100 including at least one column of the plurality of battery cells 20 arranged in the first direction x and at least one separator 101, and the at least one column of the battery cells 20 and the at least one separator 101 being alternately arranged in the third direction y. That is, for each battery module 100 in which the rows of the battery cells 20 and the separators 101 are alternately arranged in the third direction y, a plurality of battery modules 100 are accommodated in the case 11, forming the battery 10.
Alternatively, the battery module 100 may include N rows of the battery cells 20 and N-1 separators 101, the separators 101 being disposed between two adjacent rows of the battery cells 20, N being an integer greater than 1. That is, the separator 101 is provided inside the battery module 100, and the separator 101 is not provided outside the battery module 100. For example, one separator 101 is disposed between two rows of the battery cells 20, two separators 101 are disposed between three rows of the battery cells 20, and so on.
Alternatively, in one embodiment of the present application, as shown in fig. 10, the battery module 100 includes two rows of battery cells 20, i.e., N is 2. Accordingly, one separator 101 is provided in two rows of the battery cells 20. No separator 101 is provided between adjacent battery modules 100, so that this embodiment allows fewer separators 101 to be provided in the battery 10, while ensuring that each cell 20 is connected to a separator 101.
Alternatively, in one embodiment of the present application, the plurality of battery modules 100 are arranged along the third direction y with a gap between adjacent battery modules 100. The adjacent battery modules 100 have no separator 101 therebetween with a certain gap. The gap between the adjacent battery modules 100 may provide an expansion space for the battery cell 20.
Alternatively, the end of the partition 101 in the first direction x is provided with a fixing structure 103, and the partition 101 is fixed to the mounting wall 204 by the fixing structure 103. The fixing structure 103 may be directly connected to the mounting wall 204, or may be connected to a side wall of the box 11 to be connected to the mounting wall 204. In this way, each battery cell 20 is fixed to the mounting wall 204 by the partition plate 101 and the fixing structure 103, so that the fixed connection between the battery cells 20 and the mounting wall 204 is enhanced, the whole battery 10 is connected into a whole, and the structural strength of the battery 10 is improved.
Optionally, the fixation structure 103 may comprise a fixation plate 104. The fixing plate 104 is fixedly coupled to an end portion of the separator 101, and is fixedly coupled to the battery cell 20 located at the end portion of the separator 101. For example, for the rectangular parallelepiped battery cell 20, the fixing plate 104 may be vertically connected to the separator 101, and connected to two adjacent side walls of the rectangular parallelepiped battery cell 20 with the separator 101, respectively, to further enhance the fixing effect on the battery cell 20.
Alternatively, the fixing plate 104 may be made of the same material as the partition plate 101, for example, metal, plastic, or composite material. The thickness of the fixing plate 104 may be the same as that of the partition plate 101. The material or thickness of the fixing plate 104 may be different from that of the partition plate 101, for example, the fixing plate 104 may be provided with a higher strength or thickness, but the embodiment of the present application is not limited thereto.
Optionally, the connection mode between the partition board 101 and the fixing board 104 may be a connection mode such as resistance welding, resistance riveting, SPR riveting, locking bolt or clamping; the fixing plate 104 may be fixed to the mounting wall 204 by a connection method such as resistance welding, resistance riveting, SPR riveting, lock bolt or snap-fit, but the embodiment of the present invention is not limited thereto.
Alternatively, the fixing plate 104 and the battery cell 20 may be fixedly connected by bonding, for example, structural adhesive, but the embodiment of the present application is not limited thereto.
Alternatively, the fixing plate 104 includes a first connection portion 105 formed to extend in a direction away from the battery cell 20 along the first direction, and the first connection portion 105 is used to connect the mounting wall 204.
The first connection portion 105 may be parallel to the mounting wall 204, and the area of the first connection portion 105 may be set according to the fixing manner with the side wall of the connected box 11 to satisfy the required fixing effect.
Alternatively, 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 mounting wall 204 in a direction away from the battery cell 20. For example, the upper edge of the fixing plate 104 may be bent outward to form the first connection portion 105. In this way, the first connection portion 105 is integrally constructed with the main body of the fixing plate 104, so that the connection performance can be enhanced.
Optionally, in an embodiment of the present application, the fixing plate 104 further includes a second connecting portion 106 formed to extend in the first direction away from the battery cell 20, and the second connecting portion 106 is used for connecting the fixing plate 104 and the separator 101. For example, at the position where the fixing plate 104 is connected to the separator 101, a second connection portion 106 may be formed to extend away from the battery cell 20, that is, outward, and the fixing plate 104 is fixedly connected to the separator 101 via the second connection portion 106.
Alternatively, the second connection portion 106 may simultaneously achieve the connection between the fixing plates 104 in addition to the connection of the partition plate 101. For example, one fixing plate 104 is provided for each row of the battery cells 20, and the separator 101 is fixed to two fixing plates 104 corresponding to two rows of the battery cells 20 by the second connection portion 106.
The second connection portion 106 may be parallel to the barrier 101. The area of the second connecting portion 106 may be set according to the fixing manner to satisfy the required fixing effect.
Optionally, in one embodiment of the present application, the partition 101 is bonded to the first wall 201. That is, the separator 101 and the battery cell 20 may be fixedly connected by bonding, for example, by structural adhesive, but the embodiment of the present application is not limited thereto.
Optionally, in one embodiment of the present application, mounting wall 204 is bonded to second wall 202. That is, the mounting wall 204 and the battery cell 20 may be fixedly connected by bonding, for example, structural adhesive, but the embodiment of the present application is not limited thereto.
It should be understood that relevant portions in the embodiments of the present application may be mutually referred, and are not described again for brevity.
An embodiment of the present application also provides a powered device, which may include the battery 10 in the foregoing embodiments. Optionally, the electric device may be a vehicle 1, a ship, a spacecraft, or the like, but the embodiment of the present application is not limited thereto.
The battery 10 and the electric device according to the embodiment of the present application are described above, and the method and the device for manufacturing the battery 10 according to the embodiment of the present application will be described below, wherein the parts not described in detail can be referred to the foregoing embodiments.
Fig. 11 shows a schematic flow diagram of a method 300 of preparing the battery 10 according to one embodiment of the present application. As shown in fig. 11, the method 300 may include:
310, providing a plurality of battery cells 20 arranged along a first direction x, wherein the battery cells 20 comprise a first wall 201 and a second wall 202, the first wall 201 is a wall with the largest surface area in the battery cells 20, and the second wall 202 is connected with the first wall 201;
320 providing a separator 101, the separator 101 extending in the first direction x and being connected to the first wall 201 of each of the plurality of battery cells 20;
330, a mounting wall 204 is provided, the mounting wall 204 is connected to the second wall 202 of each of the plurality of battery cells 20, wherein when the battery cell 20 is disposed in the electric device, the battery cell 20 is located below the mounting wall 204, and the mounting wall 204 is used for mounting the battery cell 20.
Fig. 12 shows a schematic block diagram of an apparatus 400 for preparing the battery 10 according to an embodiment of the present application. As shown in fig. 12, the apparatus 400 for preparing the battery 10 may include:
the first providing module 410 is used for providing a plurality of battery cells 20 arranged along a first direction x, wherein each battery cell 20 comprises a first wall 201 and a second wall 202, the first wall 201 is a wall with the largest surface area in the battery cell 20, and the second wall 202 is connected with the first wall 201;
a second providing module 420 for providing a separator 101, the separator 101 extending in the first direction x and being connected to the first wall 201 of each of the plurality of battery cells 20;
and a third providing module 430, configured to provide a mounting wall 204, where the mounting wall 204 is connected to the second wall 202 of each battery cell 20 in the plurality of battery cells 20, where when the battery cell 20 is disposed in an electric device, the battery cell 20 is located below the mounting wall 204, and the mounting wall 204 is used for mounting the battery cell 20.
Hereinafter, examples of the present application will be described. The following description of the embodiments is merely exemplary in nature and is in no way intended to limit the present disclosure. The examples, where specific techniques or conditions are not indicated, are to be construed according to the techniques or conditions described in the literature in the art or according to the product specifications.
The battery 10 was subjected to a safety test according to GB38031-2020 using the battery cell 20 and the separator 101 shown in the drawing, and the test results are shown in tables 1-4.
TABLE 1
| Numbering | T1/mm | T2/mm | T1/T2 | Test results |
| 1 | 0.2 | 40 | 0.005 | Without fire or explosion |
| 2 | 0.4 | 50 | 0.008 | Without fire or explosion |
| 3 | 0.7 | 45 | 0.016 | Without fire or explosion |
| 4 | 4 | 10 | 0.4 | Without fire or explosion |
| 5 | 4 | 40 | 0.1 | Without fire or explosion |
| 6 | 45 | 15 | 3 | Without fire or |
| 7 | 150 | 10 | 15 | Fire and explosion |
TABLE 2
| Numbering | M1/Kg | M2/Kg | M1/M2 | Test results |
| 1 | 0.2 | 3 | 0.068 | Without fire or explosion |
| 2 | 0.4 | 2.5 | 0.16 | Without fire or explosion |
| 3 | 0.7 | 1.5 | 0.467 | Without fire or explosion |
| 4 | 10 | 1.5 | 6.7 | Without fire or explosion |
| 5 | 15 | 1 | 15 | Without fire or explosion |
TABLE 3
| Numbering | S1/mm2 | S2/mm2 | S1/S2 | Test results |
| 1 | 3120 | 21728 | 0.14 | Fire and explosion |
| 2 | 19500 | 38800 | 0.5 | Without fire or explosion |
| 3 | 65000 | 16800 | 3.87 | Without fire or explosion |
| 4 | 130000 | 16576 | 7.84 | Without fire or explosion |
| 5 | 216000 | 9600 | 22.5 | Without fire or explosion |
| 6 | 250000 | 7200 | 34.72 | Fire and explosion |
TABLE 4
| Numbering | Q/KJ/(kg2/℃) | M1/kg | Q/M1(KJ/(kg2/℃)) | |
| 1 | 0.39 | 25 | 0.016 | Fire and explosion |
| 2 | 0.46 | 5 | 0.092 | Without fire or explosion |
| 3 | 0.88 | 0.5 | 1.76 | No fire and explosion |
| 4 | 4 | 0.4 | 10 | Without fire or explosion |
| 5 | 4 | 0.1 | 40 | Without fire or explosion |
| 6 | 4 | 0.025 | 160 | Fire and explosion |
As can be seen from the above test results, the battery 10 provided in the present application can satisfy the safety performance requirements.
While the application has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the application. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present application is not intended to be limited to the particular embodiments disclosed herein, but rather to cover all embodiments falling within the scope of the appended claims.
Claims (28)
1. A battery (10), comprising:
a plurality of battery cells (20) arranged in a first direction, wherein each battery cell (20) comprises a first wall (201) and a second wall (202), the first wall (201) is the wall with the largest surface area in the battery cell (20), and the second wall (202) is connected with the first wall (201);
a separator (101), the separator (101) extending in the first direction and being connected with the first wall (201) of each battery cell (20) of the plurality of battery cells (20);
mounting wall (204), mounting wall (204) with second wall (202) of every battery cell (20) in a plurality of battery cells (20) are connected, wherein, when battery cell (20) set up in consumer, battery cell (20) are located mounting wall (204) below, mounting wall (204) are used for mounting battery cell (20).
2. The battery (10) according to claim 1, wherein a third wall (203) of the battery cell (20) is provided with an electrode terminal (214), the third wall (203) being spaced apart from and disposed opposite the second wall (202) along a second direction, the second direction being perpendicular to the second wall (202); or
The third wall (203) is connected to the second wall (202), and the first direction is perpendicular to the third wall (203).
3. The battery (10) of claim 1, wherein the separator (101) is a sheet of metal material.
4. The battery (10) according to claim 3, wherein the separator (101) surface is provided with an insulating layer (102).
5. The battery (10) of claim 1, wherein the separator (101) is a sheet of non-metallic material.
6. The battery (10) of claim 1, wherein the separator (101) has a first cavity (1011) disposed therein.
7. The battery (10) of claim 6, wherein the first cavity (1011) is configured to contain a fluid to regulate the temperature of the battery cell (20).
8. The battery (10) according to claim 1, wherein the separator (101) has a dimension T1 of 0.1-100 mm in a third direction perpendicular to the first wall (201).
9. The battery (10) according to claim 8, wherein a dimension T1 of the separator (101) in the third direction and a dimension T2 of the battery cell (20) in the third direction satisfy: T1/T2 is more than 0 and less than or equal to 7.
10. The battery (10) of claim 9, wherein 0 < T1/T2 ≦ 1.
11. The battery (10) according to claim 1, wherein the weight M1 of the separator (101) and the weight M2 of the battery cell (20) satisfy: M1/M2 is more than 0 and less than or equal to 20.
12. The battery (10) according to claim 11, wherein 0.1. ltoreq. M1/M2. ltoreq.1.
13. The battery (10) according to claim 1, wherein an area S1 of a surface of the separator (101) connected to the first wall (201) of the plurality of battery cells (20) and an area S2 of the first wall (201) satisfy: 0.2 is less than or equal to S1/S2 is less than or equal to 30.
14. The battery (10) according to claim 13, wherein 2. ltoreq.S 1/S2. ltoreq.10.
15. The battery (10) according to claim 1, wherein the specific heat capacity Q of the separator (101) and the weight M1 of the separator (101) satisfy: 0.02 KJ/(kg)2/℃)≤Q/M1≤100KJ/(kg2/℃)。
16. The battery (10) of claim 15, wherein 0.3 KJ/(kg)2/℃)≤Q/M1≤20KJ/(kg2/℃)。
17. The battery (10) of claim 1, wherein the mounting wall (204) has a second cavity (2041) disposed therein.
18. The battery (10) of claim 17, wherein the second cavity (2041) is configured to contain a fluid to regulate the temperature of the battery cell (20).
19. The battery (10) according to claim 1, wherein the battery (10) further comprises a reinforcing rib (205), and the reinforcing rib (205) is provided on a surface of the mounting wall (204) away from the battery cell (20) in a second direction perpendicular to the second wall (202).
20. The battery (10) of claim 19, wherein the stiffener (205) is integrally formed with the mounting wall (204).
21. The battery (10) according to claim 1, wherein the battery (10) comprises a plurality of rows of the plurality of battery cells (20) and the plurality of separators (101) arranged in the first direction, wherein the plurality of rows of the battery cells (20) and the plurality of separators (101) are alternately arranged in a third direction, the third direction being perpendicular to the first wall (201).
22. The battery (10) according to claim 1, wherein the battery (10) comprises a plurality of battery modules (100), the battery modules (100) comprise at least one column of the plurality of battery cells (20) and at least one of the separators (101) arranged in the first direction, and the at least one column of the battery cells (20) and the at least one of the separators (101) are alternately arranged in a third direction perpendicular to the first wall (201).
23. The battery (10) of claim 22, wherein the battery (10) module comprises N rows of the battery cells (20) and N-1 separators (101), the separators (101) being disposed between two adjacent rows of the battery cells (20), N being an integer greater than 1.
24. The battery (10) of claim 22, wherein a plurality of said battery (10) modules are arranged in said third direction with a gap between adjacent said battery (10) modules.
25. The battery (10) according to claim 1, wherein an end of the separator (101) in the first direction is provided with a fixing structure (103), and the separator (101) is fixed to the mounting wall (204) by the fixing structure (103).
26. The battery (10) of claim 1, wherein the separator (101) is bonded to the first wall (201).
27. The battery (10) of claim 1, wherein the mounting wall (204) is bonded to the second wall (202).
28. An electrical device, comprising: the battery (10) according to any one of claims 1 to 27, the battery (10) being for providing electrical energy.
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| CN116885378A (en) * | 2023-09-05 | 2023-10-13 | 宁德时代新能源科技股份有限公司 | Battery module, battery and electric equipment |
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| CN116885378A (en) * | 2023-09-05 | 2023-10-13 | 宁德时代新能源科技股份有限公司 | Battery module, battery and electric equipment |
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