Battery and power consumption device

Abstract

A battery (1000) and a power consumption device (2000), wherein the battery (1000) includes a plurality of battery strings (10) arranged along a first direction (F1), and each battery string (10) includes a plurality of battery cells (11) arranged along a second direction (F2) perpendicular to the first direction (F1); the above-mentioned plurality of battery strings (10); and a reinforcement structure (20) including a first reinforcement structure (21) and a second reinforcement structure (22) connected to each other, wherein the first reinforcement structure (21) is stacked along the first direction (F1) with the plurality of battery strings (10), and the second reinforcement structure (22) is stacked along the second direction (F2) with the plurality of battery cells (11) of the same battery string (10).

Description

Technical Field

[0001] This application relates to the technical field of batteries, and specifically to batteries and power consumption devices.

Background Art

[0002] In related technologies, the structural strength of batteries is poor, and the structure is likely to be damaged when the battery collides.

Summary of the Invention

Problems to be Solved by the Invention

[0003] Embodiments of this application provide a battery and a power consumption device, which improve the overall structural strength and prevent damage to the battery unit caused by impact.

[0004] In a first aspect, embodiments of this application provide a battery, including a plurality of battery strings arranged along a first direction, each of the battery strings including a plurality of battery units arranged along a second direction perpendicular to the first direction; a reinforcing structure including a first reinforcing structure extending along the second direction and a second reinforcing structure extending along the first direction, the first reinforcing structure and the second reinforcing structure being connected; the first reinforcing structure being stacked with the plurality of battery strings along the first direction; and the second reinforcing structure being stacked with the plurality of battery units of the same battery string along the second direction.

[0005] In the above technical solution, it includes a first reinforcing structure and a second reinforcing structure connected to each other, forming a structure similar to a fishbone structure, enhancing the structural strength of the reinforcing structure itself. The first reinforcing structure is stacked and arranged with a plurality of battery strings, and the second reinforcing structure is stacked and arranged with a plurality of battery cells of the battery string. Thereby, support can be provided to the battery cells from different directions, significantly improving the overall structural stability of the battery, greatly reducing the risk of damage to the battery cells, improving the stability and service life of the battery cells, and ensuring the use safety and reliability of the battery. And, the dimensional design of the battery cells becomes flexible, meeting the usage needs of different batteries.

[0006] In some embodiments, each of the plurality of battery cells of the same battery string is connected to the adjacent first reinforcing structure. In the above technical solution, the overall structural strength is further improved.

[0007] In some embodiments, the first reinforcing structure is located between two adjacent battery strings, and both of the two adjacent battery strings are connected to the adjacent first reinforcing structure. In the above technical solution, the overall structural strength is further improved by a simpler structure.

[0008] In some embodiments, the second reinforcing structure is located between two adjacent battery cells of the same battery string, and both of the two adjacent battery cells of the same battery string are connected to the adjacent second reinforcing structure. In the above technical solution, the overall structural strength is further improved.

[0009] In some embodiments, the second reinforcing structure is installed on at least one side of the first reinforcing structure in the first direction. In the above technical solution, the structural strength can be further improved.

[0010] In some embodiments, the first reinforcing structure is a plurality of reinforcing structures arranged along the first direction, and the second reinforcing structures on two adjacent first reinforcing structures are separated from each other or connected to each other. In the above technical solution, the overall strength of the reinforcing structure can be improved, or the assembly of the reinforcing structure and the battery unit can be made more convenient.

[0011] In some embodiments, the reinforcing structure has a passage for accommodating a heat exchange medium, and the reinforcing structure is thermally connected to the adjacent battery unit to adjust the temperature of the battery unit. In the above technical solution, the reinforcing structure integrates multiple functions of structural reinforcement and temperature adjustment.

[0012] In some embodiments, the passages are provided in both the first reinforcing structure and the second reinforcing structure, and the passage in the first reinforcing structure communicates with the passage in the second reinforcing structure. In the above technical solution, it is advantageous for simplifying pipeline connection.

[0013] In some embodiments, the first reinforcing structure is one or a plurality of reinforcing structures arranged along the first direction, the battery includes a shunt member and a confluence member, the shunt member and the confluence member are respectively located on both sides of the battery row in the second direction, the inlet of the passage of each first reinforcing structure communicates with the shunt member, and the outlet of the passage communicates with the confluence member. In the above technical solution, it facilitates the connection of the pipelines for heat exchange.

[0014] In some embodiments, all the passages of the first reinforcing structure communicate with the passages of the same second reinforcing structure, and a total inlet and a total outlet of the passages are respectively formed at both ends of the second reinforcing structure in the second direction. In the above technical solution, the shunt and confluence structures can be omitted, and the space utilization rate inside the battery can be increased.

[0015] In some embodiments, the end face of the single battery in the first direction is the first surface, the end face of the single battery in the second direction is the second surface, at least one of the first surfaces of each single battery is adjacent to the first reinforcing structure, and at least one of the second surfaces of each single battery is adjacent to the second reinforcing structure. In the above technical solution, it is ensured that the strength of each single battery can be effectively improved.

[0016] In some embodiments, the area of the first surface is larger than the area of the second surface. In the above technical solution, it is advantageous to enhance the supporting effect of the first reinforcing structure on the single battery.

[0017] In some embodiments, the end face of the single battery in the first direction is the first surface which is the surface with the largest area. In the above technical solution, it is advantageous for the first reinforcing structure to clamp the single battery and prevent the displacement of the pole piece.

[0018] In some embodiments, in the second direction, at least one end of the first reinforcing structure extends beyond the end face of the housing of the battery row at the corresponding end. In the above technical solution, it is possible to prevent the collision between the housing and the adjacent components and further improve the structural strength.

[0019] In some embodiments, an electrical connection part is provided on the end face of the housing at at least one end of the battery row in the second direction, and the first reinforcing structure extends beyond the electrical connection part at the corresponding end. In the above technical solution, the first reinforcing structure can also prevent the damage of the electrical connection part caused by impact.

[0020] In some embodiments, the battery further includes an electrical connection member connected to the electrical connection part, and the first reinforcing structure extends beyond the electrical connection member at the corresponding end. In the above technical solution, the first reinforcing structure can also prevent the damage of the electrical connection member caused by impact.

[0021] In some embodiments, the first reinforcing structure is a reinforcing plate, and an avoidance through-hole is provided in the reinforcing plate, and the electrical connection member passes through the avoidance through-hole to connect the electrical connection portions of two adjacent battery strings. In the above technical solution, interference between the reinforcing plate and the electrical connection structure is avoided.

[0022] In some embodiments, each battery string includes two battery units, the electrical connection portions of the two battery units are provided on opposite sides of each other, and a second reinforcing structure is provided between the two battery units. In the above technical solution, the fitting between the battery unit and the second reinforcing structure is made more stable.

[0023] In some embodiments, a pressure relief portion and an electrical connection portion are provided on the battery unit, and the pressure relief portion and the electrical connection portion are provided on different sides of the battery unit. In the above technical solution, when pressure is relieved due to thermal runaway, it is avoided that the temperature of the electrical connection portion becomes excessively high and a larger thermal runaway occurs.

[0024] In some embodiments, the end face of the battery unit in the second direction is a second surface, the end face of the battery unit in the third direction is a third surface, the third direction is perpendicular to both the first direction and the second direction, the electrical connection portion is provided on the second surface, and the pressure relief portion is provided on the third surface. In the above technical solution, there is no pressure relief towards any battery unit in the pressure relief portion.

[0025] In a second aspect, the embodiments of the present application further provide a power consumption device, the power consumption device includes the above battery, and the battery is used to supply electrical energy to the power consumption device.

Brief Description of the Drawings

[0026]

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Embodiments for Carrying Out the Invention

[0027] In order to more clearly illustrate the objectives, technical solutions, and advantages of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. However, it is obvious that the described embodiments are only a part of the embodiments of the present application, not all of them. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0028] Unless otherwise defined, all technical terms and scientific terms used in the present application have the same meaning as commonly understood by those skilled in the technical field to which the present application belongs. The terms used in the specification of the present application are only used for the purpose of explaining specific embodiments and are not intended to limit the present application. The terms "including" and "having" and their variants in the description of the specification, claims, and the above drawings of the present application are intended to cover non-exclusive inclusion. The terms such as "first" and "second" in the description of the specification, claims, and the above drawings of the present application are not used to explain a specific order or a primary-secondary relationship, but are used to distinguish different objects.

[0029] As used herein, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present specification. The appearance of this phrase in various places in this specification does not necessarily mean the same embodiment, nor does it mean an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0030] In the description of the present application, unless otherwise explicitly specified and limited, the terms "attach", "connect", "connection", "attachment" should be generally understood. For example, it may be a fixed connection, a removable connection, or an integral connection, and may be a direct connection, an indirect connection through an intermediate medium, or an internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in the present application according to the specific situation.

[0031] The term "and / or" in the present application is only a relationship for explaining the related object, meaning that three relationships may exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Note that the symbol " / " in the present application generally indicates that the related objects before and after are in an "or" relationship.

[0032] In the embodiments of the present application, the same reference numerals represent the same members. In different embodiments, for the sake of brevity, the detailed description of the same members is omitted. It should be understood that the thicknesses, dimensions such as length and width, and the overall thickness, dimensions such as length and width of the integrated device shown in the drawings of the embodiments of the present application are only exemplary and should not constitute any limitation to the present application.

[0033] As used in the present application, "a plurality" means two or more (including two).

[0034] In this application, a battery means a single physical module including one or more battery cells to provide a higher voltage and capacity. For example, the battery described in this application can include a battery module set or a battery pack, etc. Some batteries can include a housing for packaging one or more battery cells or a plurality of battery module sets. The housing can prevent liquid or other foreign objects from affecting the charging or discharging of the battery cells. Of course, some other batteries are directly installed in the battery mounting chamber of the power-consuming device without including the above-mentioned housing.

[0035] In this application, a battery cell can 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, etc., and the embodiments of this application do not limit this. The battery cell can be in the shape of a cylinder, a flat body, a cuboid, or other shapes, and the embodiments of this application do not limit this. Generally, battery cells are divided into three types: cylindrical battery cells, square battery cells, and soft-pack battery cells according to the packaging method, but the embodiments of this application do not limit this either.

[0036] For example, a battery cell can include a housing, an electrode assembly, and an electrolyte, and the housing houses the electrode assembly and the electrolyte. The electrode assembly consists of a positive electrode sheet, a negative electrode sheet, and a separator. The battery cell mainly operates by the movement of metal ions between the positive electrode sheet and the negative electrode sheet. The positive electrode sheet has a positive electrode current collector and a positive electrode active material layer coated on the surface of the positive electrode current collector. The positive electrode current collector without the positive electrode current collector layer coating protrudes more than the positive electrode current collector with the positive electrode current collector layer coating, and the positive electrode current collector without the positive electrode current collector layer coating serves as the positive electrode tab. Taking a lithium-ion battery as an example, the material of the positive electrode current collector can be aluminum, and the positive electrode active material can be lithium cobaltate, lithium iron phosphate, ternary lithium, lithium manganate, etc.

[0037] The negative electrode sheet has a negative electrode current collector and a negative electrode active material layer coated on the surface of the negative electrode current collector. The negative electrode current collector not covered by the negative electrode current collector layer protrudes from the negative electrode current collector covered by the negative electrode current collector layer, and the negative electrode current collector not covered by the negative electrode current collector layer serves as the negative electrode tab. The material of the negative electrode current collector may be copper, and the negative electrode active material may be carbon, silicon, etc. To ensure that a large current can flow without fusing, the number of positive electrode tabs is plural, the positive electrode tabs are laminated, the number of negative electrode tabs is plural, and the negative electrode tabs are laminated.

[0038] The material of the separator is PP (polypropylene), PE (polyethylene), etc. Also, the electrode assembly may have a wound structure or a laminated sheet structure, and the embodiments of the present application are not limited thereto.

[0039] As an electrical connection part of the single battery, electrode terminals connected to the tabs may be provided on the single battery. Also, the single battery may have a pressure relief part. When the internal pressure of the single battery becomes excessively large (for example, thermal runaway), the pressure relief part releases the substances inside the single battery (for example, gas, liquid, particulate matter, etc.) to reduce the internal pressure of the single battery and avoid dangerous accidents such as the inside of the single battery being rapidly pressurized and the single battery exploding and burning. For example, the pressure relief part may be an explosion-proof valve, an explosion-proof sheet, etc.

[0040] For example, some power consumption devices in related technologies employ a battery to supply power. The battery includes a housing including an upper housing and a lower housing, and a single battery. The single battery is usually fixed to the upper housing or the lower housing with viscose, and the structural strength of the entire battery is poor. However, the method of fixing with viscose is not robust. Especially with the increase in the usage time and temperature of the battery, it can cause the deterioration and softening of the viscose, making the single battery easy to move, especially easy to move when a collision occurs. Furthermore, the single battery is likely to collide with adjacent members and the housing and is easily damaged.

[0041] To avoid the problem of damage to individual batteries caused by impact, the inventor has found that the structure of the battery can be improved to enhance its structural strength.

[0042] Based on this, as a result of in-depth research, the inventor has proposed a battery 1000 including a reinforcing structure 20 and a plurality of battery rows 10 arranged along a first direction F1. Each battery row 10 includes a plurality of individual batteries 11 arranged along a second direction F2 perpendicular to the first direction F1. The reinforcing structure 20 includes a first reinforcing structure 21 extending along the second direction F2 and a second reinforcing structure 22 extending along the first direction F1, and the first reinforcing structure 21 and the second reinforcing structure 22 are connected. The first reinforcing structure 21 is stacked and arranged along the first direction F1 with the plurality of battery rows 10, and the second reinforcing structure 22 is stacked and arranged along the second direction F2 with the plurality of individual batteries 11 of the same battery row 10.

[0043] In the battery 1000 configured as described above, the reinforcing structure 20 can play a role of skeletal support, enhance the overall structural strength of the battery 1000, and when the battery 1000 is subjected to impact, the reinforcing structure 20 can withstand external forces (for example, can withstand the impact force transmitted from the housing 40), reduce the impact of external forces on the individual battery 11, mitigate the degree of damage to the individual battery 11, avoid serious thermal runaway, or avoid the impact of external forces on the individual battery 11 to prevent damage caused by the collision of the individual battery 11.

[0044] In addition, compared with fixing the individual battery in the related art only with viscose, the improvement in structural strength by the reinforcing structure 20 is more remarkable, highly reliable, less likely to deteriorate or soften, has high mechanical strength of the reinforcing structure 20, can withstand greater impact forces, and can significantly improve the service life.

[0045] The battery 1000 disclosed in the embodiments of the present application can be used in power-consuming devices 2000 such as vehicles, ships, or aircraft, but is not limited thereto. To ensure the safety and reliability of the use of the power-consuming device 2000, the power supply system of the power-consuming device 2000 can be constituted by the battery 1000 and the like disclosed in the present application.

[0046] For example, the power-consuming device 2000 disclosed in the embodiments of the present application may be a vehicle, a mobile phone, a tablet, a notebook computer, a ship, a spacecraft, an electric toy, an electric tool, etc., but is not limited thereto. The vehicle may be a fuel vehicle, a gas vehicle, a new energy vehicle, or a railway vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle, a range-extended vehicle, etc. The spacecraft includes airplanes, rockets, space shuttles, spaceships, etc. The electric toy includes stationary or mobile electric toys, such as game consoles, electric vehicle toys, electric ship toys, electric airplane toys, etc. The electric tool includes electric tools for metal cutting, grinding, assembly, and railways, such as electric drills, electric grinders, electric wrenches, electric drivers, electric hammers, impact electric drills, concrete vibrators, electric planers, etc.

[0047] Hereinafter, with reference to the drawings, the battery 1000 according to the embodiments of the present application will be described.

[0048] As shown in FIGS. 1 to 5, the battery 1000 includes a reinforcing structure 20 and a plurality of battery strings 10. The plurality of battery strings 10 are arranged along the first direction F1, and each battery string 10 includes a plurality of battery cells 11 arranged along the second direction F2 perpendicular to the first direction F1. The reinforcing structure 20 includes a first reinforcing structure 21 extending along the second direction F2 and a second reinforcing structure 22 extending along the first direction F1, and the first reinforcing structure 21 and the second reinforcing structure 22 are connected. The first reinforcing structure 21 is stacked along the first direction F1 with the plurality of battery strings 10, and the second reinforcing structure 22 is stacked along the second direction F2 with the plurality of battery cells 11 of the same battery string 10.

[0049] The reinforcing structure 20 is a structure capable of fulfilling a structure reinforcing function, and improves the structural strength of the plurality of battery strings 10 and the entire battery 1000. The reinforcing structure 20 includes a first reinforcing structure 21 extending along the second direction F2 and a second reinforcing structure extending along the first direction F1.

[0050] Note that the specific structures of the first reinforcing structure 21 and the second reinforcing structure 22 are not particularly limited. For example, as shown in FIGS. 1 and 2, the first reinforcing structure 21 may be a rectangular plate. The length direction of the rectangular plate extends along the second direction F2, or the transverse direction extends along the second direction F2 and the thickness direction extends along the first direction F1, and the plurality of battery strings 10 can be arranged compactly. Of course, the first reinforcing structure 21 may have other shapes other than a plate shape. Similarly, the second reinforcing structure 22 may be a rectangular plate or may have other shapes other than a plate shape, as long as it can meet the requirement of improving the strength of the entire battery 1000.

[0051] The material of the first reinforcing structure 21 may be a metal such as steel or aluminum, or may be a non-metal such as a high-strength plastic or a composite material. The material of the second reinforcing structure 22 may be a metal such as steel or aluminum, or may be a non-metal such as a high-strength plastic or a composite material. The second reinforcing structure 22 and the first reinforcing structure 21 may have the same material or different materials. The joining method of the second reinforcing structure 22 and the first reinforcing structure 21 may be adhesion, welding, fastener joining, integral molding, etc., and the present application does not limit this.

[0052] As shown in FIGS. 1 to 3, the first reinforcing structure 21 is stacked and arranged along the first direction F1 with the plurality of battery strings 10. That is, at least a part of the projection of the first reinforcing structure 21 and the battery string 10 along the first direction F1 overlaps, so that the first reinforcing structure 21 can easily reinforce the overall structural strength of the battery string 10, and the structure of the first reinforcing structure 21 and the battery string 10 becomes more compact.

[0053] For example, the number of the first reinforcement structures 21 may be one or plural. Among these, the more the number of the first reinforcement structures 21 is, the better the effect of improving the structural stability of the battery 1000 becomes. The first reinforcement structure 21 may be installed on one side of the plurality of battery rows 10 in the first direction F1, that is, in the first direction F1, the plurality of battery rows 10 and the first reinforcement structure 21 may be arranged in this order. The first reinforcement structure 21 may be provided between two adjacent battery rows 10, that is, in the first direction F1, one battery row 10, the first reinforcement structure 21, and the other one battery row 10 may be arranged in this order. In some embodiments where there are a plurality of the first reinforcement structures 21, at least one battery row 10 is provided between two adjacent first reinforcement structures 21, and the first reinforcement structure 21 may be provided between two adjacent battery rows 10 or on the same side of the plurality of battery rows 10.

[0054] As shown in FIGS. 1 to 3, the second reinforcement structure 22 is connected to the first reinforcement structure 21. For example, the second reinforcement structure 22 can be provided on the side where the battery row 10 of the first reinforcement structure 21 is located, so that each first reinforcement structure 21 and each second reinforcement structure 22 form a substantially T-shaped or L-shaped structure. The overall structural strength of the reinforcement structure 20 can be increased, and thus the strength enhancement effect on the battery 1000 can be increased.

[0055] The plurality of battery units 11 of the same battery row 10 as the second reinforcement structure 22 are stacked and arranged along the second direction F2. That is, by at least partially overlapping the projection of the second reinforcement structure 22 and the battery row 10 along the second direction F2, the supporting effect of the second reinforcement structure 22 on the battery row 10 is better, it is easier to reinforce the overall structural strength of the battery row 10, and the structure of the first reinforcement structure 22 and the battery row 10 becomes more compact.

[0056] For example, the number of the second reinforcing structures 22 may be one or plural. Among these, the greater the number of the second reinforcing structures 22, the better the effect of improving the structural stability of the battery 1000. The second reinforcing structure 22 can be located on one side in the second direction F2 of the entire battery string 10. Alternatively, the second reinforcing structure 22 can be located between two adjacent battery units 11, and a three-layer structure of battery unit 11 - second reinforcing structure 22 - battery unit 11 can be formed, which is advantageous for further improving the strength. The second reinforcing structure 22 can partition two adjacent battery units 11, and when a heat insulating material is used for the second reinforcing structure 22, the occurrence of heat diffusion can be avoided.

[0057] Since the reinforcing structure 20 enhances the overall structural strength of the battery 1000, the dimensional design of each battery unit 11 is not restricted. That is, the length of the battery unit 11 can be increased (for example, 140 mm or more), and requirements such as large capacity and large mounting space can be met, and the structural strength of the battery unit 11 with a large dimension is high. Also, the length of the battery unit 11 can be decreased (for example, less than 140 mm), and requirements such as small mounting space, small capacity, low difficulty in the processing process of the battery unit 11, and avoidance of the decrease in power performance due to an overly long sheet can be met, and the small-sized battery unit 11 is less likely to be damaged under the action of the reinforcing structure 20.

[0058] The battery 1000 according to an embodiment of the present application includes a first reinforcing structure 21 and a second reinforcing structure 22 connected by a reinforcing structure 20, forming a structure similar to a fishbone structure, increasing the structural strength of the reinforcing structure 20 itself. The first reinforcing structure 21 is stacked and arranged with a plurality of battery strings 10, and the second reinforcing structure 21 is stacked and arranged with a plurality of battery cells 11 of the battery string 10, so that support can be provided to the battery cells 11 from different directions. Thereby, the overall structural stability of the battery 1000 is significantly improved, the risk of damage to the battery cells 11 is greatly reduced, the stability and service life of the battery cells 11 are improved, and the use safety and reliability of the battery 1000 can be guaranteed. And, the dimensional design of the battery cells 11 becomes flexible, meeting the usage needs of different batteries 1000. When the battery 1000 disclosed in the embodiment of the present application is used in the power consumption device 2000, the power supply system of the power consumption device 2000 can adopt the battery 1000 disclosed in the present application, thereby improving the usage safety and reliability of the power consumption device 2000.

[0059] In some embodiments of the present application, as shown in FIGS. 1 to 3, a plurality of battery cells 11 in the same battery string 10 are all connected to the adjacent first reinforcing structure 21. The first reinforcing structure 21 can integrally connect a plurality of battery cells 11, further improving the structural strength of the battery string 10 and improving the shock resistance.

[0060] In addition, in the present application, there is no particular limitation on the connection method between each battery cell 11 and the first reinforcing structure 21, and for example, it may be adhesion, welding, fastener connection, etc.

[0061] In some embodiments of the present application, as shown in FIGS. 1 to 3, the first reinforcing structure 21 is located between two adjacent battery strings 10, and the two adjacent battery strings 10 are both connected to the adjacent first reinforcing structure 21. In other words, at least a three-layer structure of battery string 10 - first reinforcing structure 21 - battery string 10 is formed.

[0062] According to the above solution, not only can the strength of the battery 1000 be further enhanced, but each first reinforcing structure 21 can be used to connect a plurality of battery units 11 of the two battery strings 10 to each other, which is beneficial for reducing the number of the first reinforcing structures 21 and simplifying the structure of the battery 1000. In addition, the first reinforcing structure 21 can also partition two adjacent battery strings 10. When a heat insulating material is used for the first reinforcing structure 21, a certain heat insulating effect can be exerted to prevent heat diffusion.

[0063] In some embodiments, as shown in FIGS. 1 to 3, the second reinforcing structure 22 is located between two adjacent battery units 11 of the same battery string 10. Both of the two adjacent battery units 11 of the same battery string 10 are connected to the adjacent second reinforcing structures 22.

[0064] The second reinforcing structure 22 is located between two adjacent battery units 11 of the same battery string 10, partitions the two adjacent battery units 11, and supports the two battery units 11. Each of the two adjacent battery units 11 of the same battery string 10 is connected to the adjacent second reinforcing structure 22, and is connected by means such as adhesion, welding, and fastener connection. The second reinforcing structure 22 can connect two adjacent battery units 11 of the same battery string 10 to each other, further improving the structural strength of the battery string 10 and improving the impact resistance.

[0065] In some specific embodiments, as shown in FIG. 3, since structures such as the electrical connection portion 115 are not provided on the end faces of two adjacent battery units 11 of the same battery string 10 that are close to each other, both end faces can be directly adhered to the surface of the second reinforcing structure 22 in close contact, and the support effect and the strength enhancement effect are better.

[0066] In some embodiments, as shown in FIGS. 3 to 5, the second reinforcing structures 22 are respectively provided on at least one side of the first reinforcing structure 21 in the first direction F1.

[0067] Here, when the second reinforcing structure 22 is provided on one side of the first reinforcing structure 21, the first reinforcing structure 21 and the connected second reinforcing structure 22 form a substantially L-shaped or T-shaped structure. When one second reinforcing structure 22 is provided on each of both sides of the first reinforcing structure 21, the first reinforcing structure 21 and the second reinforcing structures 22 on both sides form a substantially cross-shaped structure. When a plurality of second reinforcing structures 22 are provided on each of both sides of the first reinforcing structure 21, the first reinforcing structure 21 and the second reinforcing structures 22 on both sides form a substantially fishbone-shaped structure. The number of the second reinforcing structures 22 can be flexibly set according to the requirement of strength enhancement and the number of battery units 11 included in the battery string 10.

[0068] According to some embodiments of the present application, as shown in FIGS. 1 to 5, the first reinforcing structures 21 are arranged in a plurality along the first direction F1, and the second reinforcing structures 22 on two adjacent first reinforcing structures 21 are separated from each other or connected to each other.

[0069] The number of the first reinforcing structures 21 can be two, three or more, and the specific number can be flexibly set according to the installation position of the first reinforcing structure 21, the number of battery strings 10, and the requirement of structural strength. For example, as shown in FIG. 1, the battery 1000 includes 32 battery strings 10, the reinforcing structure 20 includes 16 first reinforcing structures 21, each first reinforcing structure 21 is provided between two adjacent battery strings 10, and two battery strings 10 are provided between any two adjacent first reinforcing structures 21.

[0070] As shown in FIGS. 3 and 5, when the second reinforcing structures 22 on two adjacent first reinforcing structures 21 are separated from each other, that is, the second reinforcing structures 22 on the sides where two adjacent first reinforcing structures 21 are close to each other are not connected, the processing of the reinforcing structure 20 becomes easy, and the assembly of the reinforcing structure 20 and the battery unit 11 becomes easy. Alternatively, as shown in FIG. 4, by connecting the second reinforcing structures 22 on two adjacent first reinforcing structures 21 to each other, the two adjacent first reinforcing structures 21 are connected to each other by the second reinforcing structures 22, and when the reinforcing structure 20 forms a fishbone structure or a mesh structure, the overall structural strength can be further improved.

[0071] According to some embodiments of the present application, as shown in FIG. 2, in the third direction, the dimension of the reinforcement structure 20 is smaller than or equal to the distance between the end faces at both ends of the battery string 10, and both the first direction F1 and the second direction F2 are perpendicular to the third direction F3.

[0072] For example, the battery string 10 has end faces such as an upper end face and a lower end face that face each other along the third direction F3. The dimension of the reinforcement structure 20 is smaller than or equal to the distance between the end faces, which is advantageous for reducing the occupied space of the reinforcement structure 20 in the third direction F3, and is advantageous for reducing the overall dimension of the battery 1000 in the third direction F3. The battery 1000 can be used in a smaller mounting space, such as a mounting space under a vehicle.

[0073] In some embodiments of the present application, the reinforcement structure 20 has a passage for accommodating a heat exchange medium, and the reinforcement structure 20 is thermally connected to the adjacent single battery 11 to adjust the temperature of the single battery 11.

[0074] Here, the heat exchange medium may be a liquid (for example, water, a mixture of water and ethylene glycol, etc.), a gas (for example, air, etc.), a solid-liquid phase change material, etc. The thermal connection may be a direct contact connection, or a thermal conductive pad, a thermal conductive adhesive, etc. may be installed between the reinforcement structure 20 and the adjacent single battery 11 to enhance the thermal conductivity. Adjusting the temperature of the single battery 11 may be to cool the single battery 11 to dissipate heat, or to heat the single battery 11 to increase the temperature, both of which are within the protection scope of the present application. Hereinafter, the example of dissipating heat from the single battery 11 will be used to describe this embodiment, but the working process of heating the single battery 11 to increase the temperature can also be understood from the following description.

[0075] As a result, the reinforcement structure 20 and the heat exchange structure are integrally designed. A heat exchange medium can be passed through the passage, and the heat generated during the operation of the single battery 11 is conducted to the reinforcement structure 20 and then conducted through the heat exchange medium in the passage, so as to dissipate the heat of the single battery 11, and the functions of the reinforcement structure 20 can be made more diverse.

[0076] For example, in an embodiment where the reinforcement structure 20 includes a first reinforcement structure 21 and a second reinforcement structure 22, at least one of the first reinforcement structure 21 and the second reinforcement structure 22 has a passage for accommodating a heat exchange medium.

[0077] In some embodiments, passages for accommodating a heat exchange medium are provided in each of the first reinforcement structure 21 and the second reinforcement structure 22. The first reinforcement structure 21 is thermally conductively connected to the end surface of the single battery 11 in the first direction F1 to perform heat exchange, and the second reinforcement structure 22 is thermally conductively connected to the end surface of the single battery 12 in the second direction F1 to perform heat exchange. Thus, the first reinforcement structure 21 and the second reinforcement structure 22 can perform heat exchange with the single battery 11 from different sides.

[0078] In addition, the passage of the first reinforcement structure 21 is communicated with the passage of the second reinforcement structure 22 to enable the heat exchange medium inside the passage of the first reinforcement structure 21 and the passage of the second reinforcement structure 22 to flow.

[0079] On the one hand, the first reinforcement structure 21 and the second reinforcement structure 22 can simplify the pipeline connection structure by installing fewer inlets and outlets. For example, only one inlet and one outlet can be installed, and the heat exchange medium flowing in from the inlet can be flowed to each region inside the reinforcement structure 20, and after heat exchange, it can merge and flow out through the outlet. On the other hand, when the heat generation amounts of the single battery 11 on different sides do not match, the heat exchange medium in the region with less heat exchange amount and the heat exchange medium in the region with a large heat exchange amount inside the first reinforcement structure 21 and the second reinforcement structure 22 can be circulated, the temperature of the heat exchange medium in the region with a large heat exchange amount can be reduced, and thus the heat dissipation efficiency for the side of the single battery 11 with a large heat generation amount can be improved.

[0080] In some embodiments, the first reinforcement structure 21 is a plurality of reinforcement structures arranged along one or the first direction F1, and the battery 1000 further includes a shunt member and a confluence member. The shunt member and the confluence member are respectively located on both sides of the battery string 10 in the second direction F2. The inlet of the passage of each first reinforcement structure 21 communicates with the shunt member, and the outlet of the passage communicates with the confluence member.

[0081] The shunt member, the confluence member, and the reinforcement structure 20 can constitute a flow path of the heat exchange medium. That is, the heat exchange medium flows into the passage of the first reinforcement structure 21 through the shunt member, then flows into the passage of the communicated second reinforcement structure 22, and after heat exchange inside the first reinforcement structure 21 and the second reinforcement structure 22, it can flow out through the confluence member. In an embodiment including a plurality of first reinforcement structures 21, the heat exchange medium respectively flows into the passages of the plurality of first reinforcement structures 21 through the shunt member, and after heat exchange inside the first reinforcement structure 21 and the second reinforcement structure 22, it can merge into the confluence member and flow out through the confluence member. Thereby, the reinforcement structure 20 can realize connection with an external cooling / heating system through the shunt member and the confluence member, which is advantageous for simplifying pipe connection.

[0082] In the present application, the specific structures of the shunt member and the confluence member are not particularly limited. For example, the shunt member and the confluence member may be any structure such as a pipe body or a plate body, as long as they can meet the requirement of being able to communicate with the passages of the plurality of first reinforcement structures 21.

[0083] In addition, in an embodiment including a shunt member and a confluence member, the second reinforcement structures 22 on the plurality of first reinforcement structures 21 may be separated from each other or connected to each other, and all of these are within the protection scope of the present application.

[0084] In some other embodiments, as shown in FIGS. 1 and 4, all the passages of the first reinforcement structure 21 communicate with the passages of the same second reinforcement structure 22, and a total inlet and a total outlet of the passages are respectively formed at both ends of the second reinforcement structure 22 in the first direction F1.

[0085] That is, the second reinforcing structures 22 at the same position in the second direction F2 in all the first reinforcing structures 21 are integrally connected, and the integrally designed second reinforcing structures 22 are fitted to a plurality of battery strings 10 and connected to the plurality of first reinforcing structures 21.

[0086] For example, as shown in FIGS. 1 and 4, the battery 1000 includes 32 battery strings 10, and each battery string 10 includes two battery units. The reinforcing structure 20 includes 16 first reinforcing structures 21 and one second reinforcing structure 22. This second reinforcing structure 22 continuously extends from the battery string 10 at one end in the first direction F1 to the battery string 10 at the other end, and the two battery units 11 of each battery string 10 are partitioned by this second reinforcing structure 22. All 16 first reinforcing structures 21 are connected to this second reinforcing structure 22 so that the reinforcing structure 20 forms a fishbone structure. Both ends of the second reinforcing structure 22 in the first direction F1 can be exposed from the end faces of the battery strings 10 at both ends, and the total inlets and outlets at both ends of the second reinforcing structure 22 can communicate with an external cooling / heating system.

[0087] Thereby, when the heat exchange medium enters the passage of the second reinforcing structure 22 through the total inlet, flows along the second reinforcing structure 22 in the first direction F1, and sequentially flows through the regions communicating with the plurality of first reinforcing structures 21, it branches out into the plurality of first reinforcing structures 21 and can exchange heat with different side surfaces of the battery unit 21 within the first reinforcing structures 21 and the second reinforcing structure 22. The heat exchange medium after heat exchange can merge again into the second reinforcing structure 22 and flow out from the total outlet. The second reinforcing structure 22 has the functions of heat exchange, branching, and merging, and there is no need to separately provide a structure for branching and merging, so the piping connection is simplified, and the internal space of the battery 1000 can be utilized more fully.

[0088] In some embodiments, as shown in FIGS. 1 to 4, both the first reinforcing structure 21 and the second reinforcing structure 22 form plate-like structures. For example, the first reinforcing structure 21 is substantially plate-like and extends along the second direction F2 and the third direction F3, and the second reinforcing structure 22 is substantially plate-like and extends along the first direction F1 and the third direction F3. The internal passage is a large-area passage structure, and the heat exchange medium circulates and flows in the large-area passage. The heat exchange medium in the second reinforcing structure 22 is made to flow into the first reinforcing structure 21, and the heat exchange medium in the first reinforcing structure 21 is made to merge back into the second reinforcing structure 22 more easily, avoiding the situation where the space in the passage becomes small and affects the diversion and confluence.

[0089] In some embodiments of the present application, the reinforcing structure 20 can further have a buffer portion that deforms when pressed against the single battery 11.

[0090] The buffer portion can exert a buffering effect by deforming, reducing the damage suffered by the single battery 11 when an impact occurs. For example, when an impact occurs in the first direction F1, the single battery 11 presses against the buffer portion to reduce the impact force received by the single battery 11. Also, during the long-term operation of the battery 1000, in order to avoid the gap becoming too large in the early stage of use and the gap becoming insufficient in the later stage of use, it is necessary to periodically adjust the reserve gap between the single batteries 11. By providing the buffer portion, when the expansion force changes during the use of the single battery 11, pressure can be applied to the buffer portion, and the buffer portion is deformed to adjust the pressing force on the single battery 11, preventing the single battery 11 from being over-pressurized and resulting in poor infiltration, or from being overly loose and resulting in a poor interface.

[0091] In the embodiments of the present application, the specific configuration of the buffer portion can be flexibly set according to the actual situation. For example, the buffer portion can include a buffer material layer. And / or, the buffer portion can include a hollow chamber provided in the reinforcing structure 20.

[0092] Here, the buffer layer may be a material layer adhered to the surface of the reinforcing structure 20, and for example, it may be made of an elastic material such as rubber or silica gel. The buffer layer can be deformed when receiving a pressing force to exert a buffering effect.

[0093] The buffer portion may include a hollow chamber provided in the reinforcing structure 20, and when pressed, it can deform the reinforcing structure 20, and the volume of the hollow chamber can be reduced to realize a buffering effect. For example, the hollow chamber may be an integral chamber having a large area, or may include a plurality of small chambers separated from each other formed in a honeycomb shape, and all of these are within the protection scope of the present application. The reinforcing structure 20 is integrated with the buffer structure and designed integrally, aiming for more diversification of functions.

[0094] In some embodiments, as shown in FIGS. 1 to 8, the end face of the single battery 11 in the first direction F1 is the first surface 111, and the end face of the single battery 11 in the second direction F2 is the second surface 112. At least one first surface 111 of each single battery 11 is adjacent to the first reinforcing structure 21, and at least one second surface 112 of each single battery 11 is adjacent to the second reinforcing structure.

[0095] The end face of the single battery 11 in the first direction F1 is the first surface 111, and the number of the first surfaces 111 may be one or two or more. In some embodiments, the single battery 11 has two first surfaces 111, and the two first surfaces 111 are separated along the first direction F1. The end face of the single battery 11 in the second direction F2 is the second surface 112, and the number of the second surfaces 112 may be one or two or more. In some embodiments, the single battery 11 has two second surfaces 112, and the two second surfaces 112 are separated along the second direction F2.

[0096] At least one first surface 111 of each battery cell 11 is adjacent to the first reinforcement structure 21, and at least one second surface 112 of each battery cell 11 is adjacent to the second reinforcement structure. It is possible for at least two adjacent surfaces of each battery cell 11 to be fitted into the reinforcement structure 20, making it easier to improve the strength of each battery cell 11 and the uniformity of the structural strength of the entire battery 1000.

[0097] In some embodiments, as shown in FIGS. 1 to 8, the area of the first surface 111 is larger than the area of the second surface 112. Each battery cell 11 can be connected to the first reinforcement structure 21 by the surface with a larger area (the first surface 111), so as to improve the support stability for the battery string 10.

[0098] In some embodiments, the first surface 111 may be the surface with the largest area of the battery cell 11. In some embodiments, among all the side surfaces of the battery cell 11, the areas of the two side surfaces facing each other along the first direction F1 are the largest, and the first reinforcement structure 21 can be connected to the side surface with the largest area of the battery cell 11. On the one hand, it improves the support stability of the first reinforcement structure 21 for the battery string 10. On the other hand, in embodiments where the surface with the largest area has a large heat dissipation amount and the first reinforcement structure 21 has a passage, it is also advantageous for improving the heat dissipation efficiency for the battery cell 11.

[0099] Also, in embodiments including a plurality of first reinforcement structures 21, the first reinforcement structures 21 can exert an effect like that of a clamp. Two adjacent first reinforcement structures 21 can sandwich the battery cell 11 in the middle through the surface with the largest area, making the sheet inside the battery cell 11 fit more closely, improving the interface of the sheet, and preventing the displacement of the sheet of the battery cell 11 during vibration.

[0100] In some embodiments, as shown in FIG. 1, the dimension of the battery cell 11 in the second direction F2 is larger than the dimension in the first direction F1, and a plurality of battery strings 10 can be stacked and arranged along the direction with a smaller dimension, which is advantageous for making the structure more compact.

[0101] In some embodiments, as shown in FIGS. 1 and 2, the dimension of the single battery 11 in the second direction F2 is larger than the dimension in the third direction F3, which is advantageous for reducing the dimension of the entire battery 1000 in the third direction F3 and reducing the overall thickness of the battery 1000.

[0102] For example, in some specific embodiments, when the battery 1000 is used in the power consumption device 2000, the third direction F3 extends along the vertical direction, that is, the width direction of the single battery 11 is the vertical direction, and the occupied vertical space is small, so that the overall height of the battery 1000 can be reduced. A plurality of battery rows 10 are stacked and arranged along the thickness direction of the single battery 11, the thickness direction of the single battery 11 is taken as the horizontal direction, and the horizontal width of the battery 1000 is also small, so that a compact configuration can be achieved.

[0103] Referring to FIGS. 1 to 3, in the second direction F2, at least one end of the first reinforcing structure 21 extends beyond the end face of the housing of the corresponding battery row 10. Specifically, all the single batteries 11 of the battery row 10 are arranged in a row along the second direction F2, and the housing end faces of the single batteries 11 located at both ends in the second direction F2, which are separated from the adjacent single batteries 11, are the housing end faces at both ends of the battery row 10. In the second direction F2, the first reinforcing structure 21 has a first end and a second end, and the housing end faces at both ends of the battery row 10 correspond to the first end and the second end, respectively.

[0104] Here, the first end may extend beyond the corresponding housing end face of the corresponding battery string 10 along the direction away from the second end, that is, the first end may be located on the side away from the second end of the corresponding housing end face, or the second end may extend beyond the corresponding housing end face of the corresponding battery string 10 along the direction away from the first end, that is, the second end may be located on the side away from the first end of the corresponding housing end face, or the first end may extend beyond the corresponding housing end face of the corresponding battery string 10 along the direction away from the second end, and the second end may extend beyond the corresponding housing end face of the corresponding battery string 10 along the direction away from the first end, that is, the first end and the second end are respectively located on the sides away from each other of the housing end faces at both ends of the battery string 10, that is, the dimension of the first reinforcing structure 21 along the second direction F2 is larger than the distance between the housing end faces at both ends of the battery string 10.

[0105] Since at least one end of the first reinforcing structure 21 extends beyond the housing end face of the corresponding end, when a collision occurs, the extended part of the first reinforcing structure 21 contacts the adjacent members such as the housing 40 earlier than the housing end face of the corresponding end of the battery string 10, so that the housing of the single battery 11 is directly collided, the damage of the housing is avoided, the internal structure of the single battery 11 is also avoided from being damaged, and the transmission of external force to the adjacent single battery 11 due to the collision of the housing end face is also avoided, thereby improving the structural stability and safety of the entire battery string 10 and the entire battery 1000.

[0106] In the embodiments of the present application, the dimension of the first reinforcing structure 21 extending beyond the housing end face of the corresponding end of the battery string 10 can be flexibly set according to the actual situation.

[0107] For example, in some embodiments, an electrical connection portion 115 is provided on the housing end face of at least one end of the battery string 10 in the second direction F2, and the first reinforcing structure 21 extends beyond the electrical connection portion 115 of the corresponding end.

[0108] The electrical connection part 115 is a member for realizing the electrical connection of the single battery 11, and may be, for example, an electrode terminal. The electrical connection part 115 is provided on the housing end face which is the end face along the second direction F2 of the battery string 10, and can be used to realize the electrical connection between this single battery 11 or this battery string 10 and other structures. For example, the series or parallel connection of a plurality of battery strings 10 can be realized.

[0109] The first reinforcement structure 21 extends beyond the electrical connection part 115 at the corresponding end. That is, the first end of the first reinforcement structure 21 is located on the side away from the second end of the electrical connection part 115 at the corresponding end, and the second end is located on the side away from the first end of the electrical connection part 115 at the corresponding end.

[0110] Thereby, during a collision, the first reinforcement structure 21 contacts the adjacent member earlier than the electrical connection part 115, and it is possible to avoid the electrical connection part 115 from being directly collided and damaged. The first reinforcement structure 21 can protect not only the housing but also the electrical connection part 115.

[0111] For example, in some embodiments, as shown in FIG. 3, the battery 1000 further includes an electrical connection member 12 connected to the electrical connection part 115, and the first reinforcement structure 21 extends beyond the electrical connection member 12 at the corresponding end.

[0112] The electrical connection part 12 is for realizing the electrical connection between two electrical connection parts 115. For example, the electrical connection part 12 may be a merging sheet. The first reinforcement structure 21 extends beyond the electrical connection member 12 at the corresponding end. That is, the first end of the first reinforcement structure 21 is located on the side away from the second end of the electrical connection member 12 at the corresponding end, and the second end is located on the side away from the first end of the electrical connection member 12 at the corresponding end.

[0113] As a result, during a collision, the first reinforcement structure 21 contacts the member adjacent to it earlier than the electrical connection member 12, avoiding the electrical connection member 12 directly colliding and damaging the electrical connection member 12 and the electrical connection structure. The first reinforcement structure 21 can realize the protection of the housing, the electrical connection part 115 and the electrical connection member 12, and can make the protection effect more reliable.

[0114] Also, as shown in FIG. 3, the first reinforcement structure 21 can be provided with an avoidance structure for avoiding the electrical connection member 12, facilitating the connection of the two battery strings 10 adjacent to the electrical connection part 12, and facilitating the series connection or parallel connection of the two battery strings 10.

[0115] For example, the first reinforcement structure 21 may be a reinforcement plate, and an avoidance through-hole is provided in the reinforcement plate, and the electrical connection member 12 connects the electrical connection parts 115 of the two adjacent battery strings 10 through the avoidance through-hole.

[0116] The avoidance through-hole penetrates the surfaces on both sides of the first reinforcement structure 21 to form a hollow structure, and the electrical connection member 12 passes through the first reinforcement structure 21 along the first direction F1 and is electrically connected to the electrical connection parts 115 of the two battery strings 10 on both sides of the first reinforcement structure 21.

[0117] In some embodiments of the present application, the excess dimension of the first reinforcement structure 21 in the second direction F2 is 3 mm to 50 mm. For example, in some specific embodiments, the excess dimension of the first reinforcement structure is 3 mm, 5 mm, 10 mm, 20 mm, 30 mm, 40 mm, 50 mm, etc.

[0118] Here, in an embodiment where the first reinforcing structure 21 does not exceed the electrical connection portion 115 beyond the housing end face, the excess dimension of the first reinforcing structure 21 is the distance between the end of the first reinforcing structure 21 in the second direction F2 and the corresponding housing end face. In an embodiment where the first reinforcing structure 21 exceeds the electrical connection portion 115 but does not exceed the electrical connection member 12, the excess dimension of the first reinforcing structure 21 is the distance between the end of the first reinforcing structure 21 in the second direction F2 and the corresponding electrical connection portion 115. In an embodiment where the first reinforcing structure 21 exceeds the electrical connection member 12, the excess dimension of the first reinforcing structure 21 is the distance between the end of the first reinforcing structure 21 in the second direction F2 and the corresponding electrical connection member 12.

[0119] By the excess dimension of the first reinforcing structure 21 being within the above numerical range, the excess dimension is made large enough to ensure the effect of preventing the single battery 11 from being impacted. And it is avoided that the excess dimension is too large and the occupied space of the first reinforcing structure 21 is too large, which is advantageous for making the structure more compact.

[0120] According to some embodiments of the present application, as shown in FIGS. 1 to 3 and FIGS. 7 to 8, each battery row 10 includes two single batteries 11, that is, the two single batteries 11 are arranged in a row along the second direction F2. The electrical connection portions 115 of the two single batteries 11 are arranged on the back-to-back sides of each other, and a second reinforcing structure 22 is provided between the two single batteries 11.

[0121] If the thickness of the first reinforcing structure 21 is too small, the structural strength of the first reinforcing structure 21 itself will decrease, which is disadvantageous for the impact prevention effect. If the thickness of the first reinforcing structure 21 is too large, the occupied space will be too large and the cost will increase. Within the above numerical range, the structural reinforcement effect and impact resistance for the battery 1000 are ensured, which is advantageous for making the structure compact and reducing the cost.

[0122] According to some embodiments of the present application, as shown in FIGS. 1 to 3 and FIGS. 7 to 8, each battery row 10 includes two single batteries 11, that is, the two single batteries 11 are arranged in a row along the second direction F2. The electrical connection portions 115 of the two single batteries 11 are arranged on the back-to-back sides of each other, and a second reinforcing structure 22 is provided between the two single batteries 11.

[0123] For example, the electrical connection part 115 of each single battery 11 includes two electrode terminals provided on the same side. The two electrode terminals can be respectively a positive electrode terminal and a negative electrode terminal. The two electrode terminals can be electrically connected through the same side of the single battery 11, and the electrical connection structure can share the same space, which is beneficial to the compactness of the structure.

[0124] By providing the electrical connection parts 115 of the two single batteries 11 on the opposite sides of each other, the electrical connection parts 115 of the single batteries 11 located on the same side in the second direction F2 of the plurality of battery rows 10 are all provided on the same side. As shown in FIG. 1, the 64 electrical connection parts 115 of the 32 battery rows 10 are formed in two rows partitioned along the second direction F2, and each row includes 32 electrical connection parts 115 arranged along the first direction F1.

[0125] Thereby, the distance between the plurality of electrical connection parts 115 in the same row is closer, and the electrical connection between the single batteries 11 becomes easier. In addition, the bottoms of the two single batteries 11 in the same battery row 10 (that is, the ends facing away from the electrical connection part 115) can be connected face to face, and it becomes easier for both of the two single batteries 11 to be in surface contact with the second reinforcing structure 22, enabling more stable support and limitation, and the overall structural strength can be increased.

[0126] Of course, according to actual requirements, in some other embodiments, as shown in FIG. 6, the electrical connection part 115 of each single battery 11 includes two electrode terminals, and the two electrode terminals are respectively provided on both sides of the single battery 11 in the second direction F2, so that a part of the electrical connection structure is located in the middle of the battery 1000, and the risk of damage to the electrical connection structure in the middle can be reduced.

[0127] In the embodiment where the battery row 10 includes a plurality of single batteries 11, the number of single batteries 11 may be 2 to 5, and it is possible to avoid the overall dimensions of the battery 1000 becoming too large due to too many single batteries 11.

[0128] According to some embodiments of the present application, as shown in FIGS. 6 to 8, the single battery 11 is provided with a pressure relief portion 114 and an electrical connection portion 115. When the internal pressure of the single battery 11 becomes excessive (for example, thermal runaway), the pressure relief portion 114 is used to release the substances (such as gas, liquid, particulate matter, etc.) inside the single battery 11, reduce the internal pressure of the single battery 11, and avoid causing dangerous accidents such as the single battery 11 being pressurized too quickly and exploding. The pressure relief portion 114 may be, for example, an explosion-proof valve or an explosion-proof sheet.

[0129] In addition, the pressure relief portion 114 and the electrical connection portion 115 are provided on different sides of the single battery 11. It is advantageous to ensure a large distance between the electrical connection portion 115 and the pressure relief portion 114 of the single battery 11, so that conductive particles and the like in the discharge substances discharged by the single battery 11 through its own pressure relief portion 114 during thermal runaway and the like do not flow into its own electrical connection portion 115, effectively avoiding problems such as poor insulation, high-voltage ignition, and explosion.

[0130] In some embodiments, as shown in FIGS. 6 to 7, the end face of the single battery 11 in the second direction F2 is the second surface 112, and the end face of the single battery 11 in the third direction F3 is the third surface 113. Both the first direction F1 and the second direction F2 are perpendicular to the third direction F3. The electrical connection portion 115 is provided on the second surface 112, and the pressure relief portion 114 is provided on the third surface 113. In other words, the pressure relief portion 114 and the electrical connection portion 115 are respectively provided on two adjacent side surfaces of the single battery 11.

[0131] Thereby, a certain safe distance can be maintained between the electrical connection portion 115 and the pressure relief portion 114, the influence of the discharge substances discharged from the pressure relief portion 114 on the electrical connection portion 115 can be reduced, and the safety and reliability in the use of the battery 1000 can be improved.

[0132] Further, by arranging a plurality of battery strings 10 along the first direction F1, arranging a plurality of battery cells 11 of the same battery string 10 along the second direction F2, and providing a pressure relief portion 114 on the third surface 113, the pressure relief portions 114 of the battery cells 11 within the same battery string 10 do not jet toward any electrical connection portion 115 within this battery string 10, nor do they jet toward any electrical connection portion 115 within an adjacent battery string 10. Therefore, the electrical connection portions 115 of each battery cell 11 can be effectively protected from being affected by emissions discharged from other battery cells 11, and the safety and reliability in the use of the battery 1000 can be ensured.

[0133] The power consumption device 2000 according to an embodiment of the second aspect of the present application includes the battery 1000 according to the embodiment of the first aspect described above, and the battery 1000 is used to supply electrical energy to the power consumption device 2000. Thereby, by adopting the above-described battery 1000, it is advantageous for improving the safety and reliability in the use of the power consumption device 2000.

[0134] Optionally, as shown in FIG. 9, when the battery 1000 is used in a vehicle, the battery 1000 may be installed at the bottom, head, or tail of the vehicle. The battery 1000 can be used for power supply of the vehicle, for example, it can be used as an operating power source of the vehicle. The vehicle can also include a controller and a motor, and the controller controls the battery 1000 to supply power to the motor, for example, for starting the vehicle, navigation, and working power requirements during driving.

[0135] Hereinafter, with reference to the drawings, a battery 1000 and a vehicle having the same according to one specific embodiment of the present application will be described.

[0136] As shown in FIG. 9, the battery 1000 is provided on the chassis of the vehicle. As shown in FIGS. 1 to 4, the battery 1000 includes a housing 40 and 32 battery strings 10 provided in the housing 40 and arranged along a first direction F1 which is a first horizontal direction. Each battery string 10 includes two battery cells 11 arranged along a second direction F2 which is a second horizontal direction. The battery cell 11 includes a housing and an electrical connection portion 115 provided at one end of the housing in the second direction F2. For the two battery cells 11 in the same battery string 10, the electrical connection portions 115 are provided on the opposite sides of each other. The housing of each battery cell 11 has a dimension in the second direction F2 larger than the dimension in a third direction F3, the dimension in the third direction F3 larger than the dimension in the first direction F1, and the third direction F3 is the vertical direction. That is, the longitudinal direction of the battery cell 11 is along the second direction F2, the width direction is along the vertical direction, and the thickness direction is along the first direction F1 respectively.

[0137] The reinforcing structure 20 includes 16 first reinforcing structures 21 and one second reinforcing structure 22 designed integrally. Both the first reinforcing structure 21 and the second reinforcing structure 22 are flat plate structures and form a fishbone structure.

[0138] The 16 first reinforcing structures 21 are arranged along the first direction F1, and two battery strings 10 are provided between any two adjacent first reinforcing structures 21. Viscose layers are provided on both side surfaces of the first reinforcing structure 21 and adhered to the largest surfaces of the battery cells 11 on both sides to form an integral structure, thereby constituting a laminated structure of battery cell 11 - first reinforcing structure 21 - battery cell 11 type, and the strength of the battery 1000 is further enhanced.

[0139] The second reinforcing structure 22 designed integrally is fitted to the 32 battery strings 10, that is, the two battery cells 11 of each battery string 10 are adhered to both side surfaces of the second reinforcing structure 22.

[0140] Meanwhile, both the first reinforcement structure 21 and the second reinforcement structure 22 have passages, and the passages of each first reinforcement structure 21 communicate with the passages of the second reinforcement structure 22. Both ends of the second reinforcement structure 22 serve as the total inlet and the total outlet of the passages respectively, and the second reinforcement structure 22 plays the role of diversion and confluence. There is no need to install a confluence and diversion structure on both sides in the second direction F2, and the internal space of the battery 1000 can be utilized more fully.

[0141] By connecting one first surface 111 of each battery unit 11 to the first reinforcement structure 21 and one second surface 112 to the second reinforcement structure 22, the effect of simultaneous heat exchange between the largest surface and the bottom surface is realized. And the first reinforcement structure 21 sandwiches the battery unit 11 in the middle through the surface with the largest area, playing a role like a clamp. The pressure relief part 114 of the battery unit 11 is provided on the third surface 113 of the battery unit 11 and is installed downward. By having high pressure and pressure relief at the same end of the battery unit 11, it is avoided that pressure relief affects the high-pressure connection structure.

[0142] By providing the reinforcement structure 20, after forming the assembled battery 1000 with the battery unit 11, the overall strength and stability of the battery 1000 can be enhanced, the damage of the battery unit 11 caused by being impacted can be reduced or prevented, and safety risks can be avoided.

[0143] It should be noted that the embodiments and features in the embodiments in this specification may be combined with each other without conflict.

[0144] The above are only preferred embodiments of the present application and do not limit the present application. The present application can be variously modified and changed for those skilled in the art. Any corrections, equivalent substitutions, improvements, etc. made within the spirit and principle of the present application are also intended to be included within the protection scope of the present application.

Description of Reference Numerals

[0145] Battery 1000 Power consumption device 2000 Battery string 10 Battery unit 11 First surface 111 Second surface 112 Third surface 113 Pressure relief part 114 Electrical connection part 115 Electrical connection member 12 Reinforcement structure 20 First reinforcement structure 21 Second reinforcement structure 22 Housing 40 First direction F1 Second direction F2 Third direction F3

Claims

1. A battery (1000), comprising: a plurality of battery strings (10) arranged along a first direction (F1), each of the battery strings (10) including a plurality of battery cells (11) arranged along a second direction (F2) perpendicular to the first direction (F1); and a reinforcing structure (20) including a first reinforcing structure (21) extending along the second direction (F2) and a second reinforcing structure (22) extending along the first direction (F1), the first reinforcing structure (21) being connected to the second reinforcing structure (22), the first reinforcing structure (21) being stacked and arranged along the first direction (F1) with the plurality of battery strings (10), and the second reinforcing structure (22) being stacked and arranged along the second direction (F2) with the plurality of battery cells (11) of the same battery string (10).

2. The battery (1000) according to claim 1, wherein each of the plurality of battery cells (11) of the same battery string (10) is connected to the adjacent first reinforcing structure (21).

3. The battery (1000) according to claim 1 or 2, wherein the first reinforcing structure (21) is located between two adjacent battery strings (10), and both of the two adjacent battery strings (10) are connected to the adjacent first reinforcing structure (21).

4. The battery (1000) according to any one of claims 1 to 3, wherein the second reinforcing structure (22) is located between two adjacent battery cells (11) of the same battery string (10), and both of the two adjacent battery cells (11) of the same battery string (10) are connected to the adjacent second reinforcing structure (22).

5. The battery (1000) according to any one of claims 1 to 4, wherein the second reinforcing structure (22) is installed on at least one side of the first reinforcing structure (21) in the first direction (F1).

6. The battery (1000) according to any one of claims 1 to 5, wherein the first reinforcing structures (21) are arranged along the first direction (F1) and are plural, and the second reinforcing structures (22) on two adjacent first reinforcing structures (21) are either separated from each other or connected to each other.

7. The reinforcing structure (20) has a passage for accommodating a heat exchange medium, and the reinforcing structure (20) is thermally connected to the adjacent battery unit (11) to adjust the temperature of the battery unit (11). The battery (1000) according to any one of claims 1 to 6.

8. Both the first reinforcing structure (21) and the second reinforcing structure (22) are provided with the passages, and the passage of the first reinforcing structure (21) communicates with the passage of the second reinforcing structure (22). The battery (1000) according to claim 7.

9. The first reinforcing structure (21) is one or a plurality of reinforcing structures arranged along the first direction (F1). The battery (1000) includes a shunt member and a confluence member. The shunt member and the confluence member are respectively located on both sides of the battery row (10) in the second direction (F2). The inlet of the passage of each first reinforcing structure (21) communicates with the shunt member, and the outlet of the passage communicates with the confluence member. The battery (1000) according to claim 8.

10. All the passages of the first reinforcing structure (21) communicate with the passages of the same second reinforcing structure (22), and a total inlet and a total outlet of the passages are respectively formed at both ends of the second reinforcing structure (22) in the first direction (F1). The battery (1000) according to claim 8.

11. The end face of the battery unit (11) in the first direction (F1) is the first surface (111), and the end face of the battery unit (11) in the second direction (F2) is the second surface (112). At least one of the first surfaces (111) of each battery unit (11) is adjacent to the first reinforcing structure (21), and at least one of the second surfaces (112) of each battery unit (11) is adjacent to the second reinforcing structure (22). The battery (1000) according to any one of claims 1 to 10.

12. The area of the first surface (111) is larger than the area of the second surface (112). The battery (1000) according to claim 11.

13. The end face of the battery unit (11) in the first direction (F1) is the first surface (111), and the first surface (111) is the surface with the largest area. The battery (1000) according to any one of claims 1 to 12.

14. The battery (1000) according to any one of claims 1 to 13, wherein at least one end of the first reinforcing structure (21) extends beyond the housing end face of the corresponding end of the battery string (10) in the second direction (F2).

15. The battery (1000) according to claim 14, wherein an electrical connection part (115) is provided on the housing end face of at least one end of the battery string (10) in the second direction (F2), and the first reinforcing structure (21) extends beyond the electrical connection part (115) of the corresponding end.

16. The battery (1000) according to claim 15, further comprising an electrical connection member (12) connected to the electrical connection part (115), and the first reinforcing structure (21) extends beyond the electrical connection member (12) of the corresponding end.

17. The first reinforcing structure (12) is a reinforcing plate, and an avoidance through hole is provided in the reinforcing plate. The electrical connection member (12) passes through the avoidance through hole to connect the electrical connection parts (115) of two adjacent battery strings (10). The battery (1000) according to claim 16.

18. Each battery string (10) includes two battery units (11). The electrical connection parts (115) of the two battery units (11) are provided on the opposite sides of each other. A second reinforcing structure (22) is provided between the two battery units (11). The battery (1000) according to any one of claims 1 to 17.

19. The battery unit (11) is provided with a pressure relief part (114) and an electrical connection part (115). The pressure relief part (114) and the electrical connection part (115) are provided on different sides of the battery unit (11). The battery (1000) according to any one of claims 1 to 18.

20. The end face of the battery unit (11) in the second direction (F2) is the second surface (112), and the end face of the battery unit (11) in the third direction (F3) is the third surface (113). The third direction (F3) is perpendicular to both the first direction (F1) and the second direction (F2). The electrical connection part (115) is provided on the second surface (112), and the pressure relief part (114) is provided on the third surface (113). The battery (1000) according to claim 19.

21. A power consumption device (2000) including the battery (1000) according to any one of claims 1 to 20, wherein the battery (1000) is used to supply electrical energy to the power consumption device (2000).

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