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 at least one battery cell (11) arranged along a second direction (F2) perpendicular to the first direction (F1); the plurality of battery strings (10) as described above; and a reinforcement structure (20) including a first reinforcement structure (21), the first reinforcement structure (21) being stacked and arranged along the first direction (F1) with the plurality of battery strings (10). In the second direction (F2), at least one end of the first reinforcement structure (21) extends beyond the end face of the housing (111) of the corresponding battery string (10).

Description

Technical Field

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

Background Art

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

Summary of 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 caused by impact.

[0004] In a first aspect, embodiments of this application provide a battery, which includes a plurality of battery rows arranged along a first direction, each of the battery rows including at least one battery unit arranged along a second direction perpendicular to the first direction, each of the battery units having a housing, a plurality of battery rows, and a reinforcing structure including a first reinforcing structure extending along the second direction, the first reinforcing structure being stacked and arranged along the first direction with the plurality of battery rows, and the reinforcing structure, and in the second direction, at least one end of the first reinforcing structure extends beyond an end face of the housing of the corresponding battery row at the corresponding end.

[0005] In the above technical solution, in the second direction, since at least one end of the first reinforcing structure extends beyond the end face of the housing of the corresponding battery row, the structural strength of the battery can be increased, preventing the housing from colliding with adjacent members and being damaged, improving the stability and service life of the battery unit, and ensuring the use safety and reliability of the battery. And the dimension of the battery unit in the second direction is designed more flexibly to meet the usage needs of different batteries. When the battery disclosed in the embodiments of this application is used in a power consumption device, the power supply system of the power consumption device can adopt the battery disclosed in this application, thereby improving the usage safety and reliability of the power consumption device.

[0006] In some embodiments, an electrical connection portion is provided on an end face of at least one end of the battery string in the second direction, and the first reinforcement structure extends beyond the electrical connection portion at the corresponding end. In the above technical solution, the first reinforcement structure can also prevent damage to the electrical connection portion caused by impact.

[0007] In some embodiments, the battery further includes an electrical connection member connected to the electrical connection portion, and the first reinforcement structure extends beyond the electrical connection member at the corresponding end. In the above technical solution, the first reinforcement structure can also prevent damage to the electrical connection member caused by impact.

[0008] In some embodiments, the first reinforcement structure is a reinforcement plate, and an avoidance through hole is provided in the reinforcement plate, and the electrical connection member connects the electrical connection portions of two adjacent battery strings through the avoidance through hole. In the above technical solution, it is avoided that the first reinforcement structure interferes with the electrical connection member.

[0009] In some embodiments, the excess dimension of the first reinforcement structure in the second direction is 3 mm to 50 mm. In the above technical solution, the structural reinforcement effect is guaranteed and the structure is made compact.

[0010] In some embodiments, the thickness of the first reinforcement structure in the first direction is 1 mm to 8 mm. In the above technical solution, the structural reinforcement effect is guaranteed, the structure is made compact, and the cost is reduced.

[0011] In some embodiments, the battery string includes a plurality of battery units, and a plurality of battery units in the same battery string are all connected to the adjacent first reinforcement structure, and / or two adjacent battery units in the same battery string are adhered via a viscose layer. In the above technical solution, the overall structural strength is further improved.

[0012] In some embodiments, at least one of the first reinforcing structures 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 with a simpler structure.

[0013] In some embodiments, the reinforcing structure further includes a second reinforcing structure connected to the first reinforcing structure. The second reinforcing structure extends along the first direction and is stacked and arranged with the battery units of the same battery string along the second direction. In the above technical solution, the structural strength can be further improved.

[0014] In some embodiments, the battery string includes a plurality of the battery units, and at least one of the second reinforcing structures is provided between two adjacent battery units. In the above technical solution, with a simpler structure, support and structural reinforcement are provided to two battery units simultaneously.

[0015] In some embodiments, the second reinforcing structures are respectively installed along both sides in the first direction of the first reinforcing structure. In the above technical solution, the overall strength of the reinforcing structure is improved.

[0016] 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.

[0017] In some embodiments, in the third direction, the dimension of the reinforcing structure is smaller than or equal to the distance between the end faces at both ends of the battery string, and both the first direction and the second direction are perpendicular to the third direction. In the above technical solution, it is avoided that the reinforcing structure excessively occupies the space in the third direction, and the structure is made compact.

[0018] In some embodiments, the reinforcement structure has a passage for accommodating a heat exchange medium, and the reinforcement structure is thermally connected to the adjacent battery unit to adjust the temperature of the battery unit. In the above technical solution, the reinforcement structure integrates multiple functions such as structural reinforcement and temperature adjustment of the battery unit.

[0019] In some embodiments, the first reinforcement structure is one or a plurality of reinforcement 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 string in the second direction, the inlet of the passage of each first reinforcement 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 between the passage and an external pipeline.

[0020] In some embodiments, the reinforcement structure has a buffer portion suitable for deformation caused by pressing of the battery unit. In the above technical solution, the reinforcement structure integrates multiple functions such as structural reinforcement and adjustment of the gap between battery units.

[0021] In some embodiments, the buffer portion includes a buffer material layer, and / or the buffer portion includes a hollow chamber provided in the reinforcement structure. In the above technical solution, the buffer portion has a simple structure and is also easy to adjust the gap between battery units.

[0022] In some embodiments, the side surface of the battery unit adjacent to the first reinforcement structure along the first direction is the surface with the largest area. In the above technical solution, it is advantageous for improving the effects of support, structural reinforcement, and temperature adjustment.

[0023] In some embodiments, both side surfaces of the battery unit facing each other along the first direction are surfaces with the largest area. In the above technical solution, it is advantageous for improving the effects of support, structural reinforcement, and temperature adjustment.

[0024] In some embodiments, the dimension of the single battery in the second direction is larger than the dimension in the first direction. In the above technical solution, a plurality of battery strings in the battery can be arranged along the first direction where the dimension of the single battery is small, which is advantageous for reducing the occupied space of the whole battery.

[0025] In some embodiments, each of the battery strings includes two of the single batteries. The electrical connection part of each single battery includes two electrode terminals provided on the same side. The electrical connection parts of the two single batteries are provided on the opposite sides of each other, or the electrical connection parts of the two single batteries are provided on the opposite sides of each other and are connected to each other. In the above technical solution, the two single batteries in the same battery string support and limit each other, further improving the overall structural strength.

[0026] In some embodiments, each of the battery strings includes a plurality of the single batteries. The electrical connection part of each single battery includes two electrode terminals provided on both sides respectively. The opposing electrode terminals of two adjacent single batteries are electrically connected. In the above technical solution, the plurality of single batteries in the same battery string support and limit each other, further improving the overall structural strength.

[0027] In some embodiments, a pressure relief part and an electrical connection part are provided on the single battery, and the pressure relief part and the electrical connection part are provided on different sides of the single battery. In the above technical solution, when relieving pressure due to thermal runaway, it is avoided that the temperature of the electrical connection part becomes excessively high and ignition or explosion occurs.

[0028] In a second aspect, the embodiments of the present application also provide a power consumption device, the power consumption device includes the above battery, and the battery is used to provide electrical energy for the power consumption device.

Brief Description of the Drawings

[0029]

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Embodiments for Carrying out the Invention

[0030] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, hereinafter, with reference to the drawings in the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly described. 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 in 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.

[0031] Unless otherwise defined, all technical and scientific terms used in this application shall have the same meaning as commonly understood by those skilled in the art to which this application pertains. The terms used in the specification of this application are used only for the purpose of explaining specific embodiments and are not intended to limit this application. The terms "comprising" and "having" and their variations in the specification, claims, and description of the above drawings of this application are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification, claims, and above drawings of this application are not used to explain a specific order or primary-secondary relationship, but are used to distinguish different objects.

[0032] As used herein, the term "example" means that a particular feature, structure, or characteristic described in connection with an example may be included in at least one example of this specification. The appearance of this phrase in various places in this specification does not necessarily mean the same example, nor does it mean independent or alternative examples that are mutually exclusive with other examples.

[0033] In addition, in the description of this application, unless otherwise explicitly specified and limited, the terms "attach", "connect", "link", "attachment" should be understood generally, for example, it may be a fixed connection, a removable connection, or an integral connection, and may be a direct connection or 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 this application according to the specific situation.

[0034] The term "and / or" in this application only describes the relevant relationship, meaning that three types of relationships can 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 this application generally indicates that the relevant objects before and after are in an "or" relationship.

[0035] In the embodiments of this 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 of various members in the embodiments of this application shown in the drawings, and the overall thickness, dimensions such as length and width of the integrated device are only exemplary and should not constitute any limitation to this application.

[0036] "Plurality" as described in this application means two or more (including two).

[0037] 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 can be directly installed in the battery installation chamber of the power consumption device without including the above housing.

[0038] In this application, the single 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 single battery cell may 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. The single battery cell is generally divided into three types: a cylindrical single battery cell, a square single battery cell, and a soft pack single battery cell by a packaging method, but the embodiments of this application do not limit this either.

[0039] For example, the single 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 single 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 not coated with the positive electrode active material layer protrudes more than the positive electrode current collector coated with the positive electrode active material layer, and the positive electrode current collector not coated with the positive electrode active material layer serves as the positive electrode tab. 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, etc.

[0040] 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 coated with the negative electrode active material layer protrudes more than the negative electrode current collector coated with the negative electrode active material layer, and the negative electrode current collector not coated with the negative electrode active material 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. In order 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.

[0041] The material of the separator is PP (polypropylene) or 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.

[0042] As an electrical connection part of the single battery, electrode terminals connected to tabs, etc. 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 causing 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.

[0043] For example, some power consumption devices in related technologies adopt 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 whole battery is poor. However, the method of fixing with viscose is not firm. Especially with the increase in the use time of the battery and the rise in temperature, the viscose can deteriorate and soften, making the single battery easy to move, especially easy to move when a collision occurs. Furthermore, the single battery is easy to collide with adjacent members and the housing and is easy to break.

[0044] In order to avoid the problem of damage to the single battery due to impact, the inventor has found that the structure of the battery can be improved to improve its structural strength.

[0045] Based on this, as a result of in-depth research by the inventor, a battery 1000 is proposed that includes a reinforcing structure 20 and a plurality of battery strings 10 arranged along a first direction F1. Each battery string 10 includes at least one battery cell 11 arranged along a second direction F2 perpendicular to the first direction F1. Each battery cell 11 has a housing 111. The reinforcing structure 20 includes a first reinforcing structure 21 extending along the second direction F2. The first reinforcing structure 21 is stacked and arranged along the first direction F1 with the plurality of battery strings 10. In the second direction F2, at least one end of the first reinforcing structure 21 extends beyond the end face of the housing 111 of the corresponding-end battery string 10.

[0046] In the battery 1000 configured as described above, the reinforcing structure 20 improves the structural strength of the entire battery 1000. At least one end of the first reinforcing structure 21 extends beyond the end face of the housing 111 of the corresponding-end battery string 10. When the battery 1000 is subjected to an impact, the first reinforcing structure 21 receives the action of an external force prior to the housing 111 (for example, receives the impact force transmitted from the housing 40), avoiding the direct action of the external force on the housing 111 of the battery cell 11, or avoiding the action of the external force on the housing 111 of the battery cell 11, and preventing damage to the battery cell 11 due to a collision.

[0047] Also, compared with fixing the battery cell 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 a high mechanical strength, can withstand a greater impact force, and can significantly improve the service life of the battery 1000.

[0048] The battery 1000 disclosed in the embodiments of the present application can be used in a power-consuming device 2000 such as a vehicle, a ship, or an aircraft, but is not limited thereto. In order 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 configured by the battery 1000 and the like disclosed in the present application.

[0049] For example, the power consumption 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. The new energy vehicle may be a pure electric vehicle, a hybrid vehicle, a range extender 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 boat 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.

[0050] Hereinafter, with reference to the drawings, the battery 1000 according to the embodiments of the present application will be described.

[0051] As shown in FIGS. 1 to 8, the battery 1000 includes a reinforcing structure 20 and a plurality of battery strings 10. The plurality of battery strings 10 are arranged along a first direction F1, and each battery string 10 includes at least one battery cell 11 arranged along a second direction F2 perpendicular to the first direction F1. Each battery cell 11 has a housing 111. The reinforcing structure 20 includes a first reinforcing structure 21 extending along the second direction F2, and the first reinforcing structure 21 is stacked and arranged along the first direction F1 with the plurality of battery strings 10. In the second direction F2, at least one end of the first reinforcing structure 21 extends beyond the end face of the housing 111 of the corresponding battery string 10.

[0052] Each battery string 10 includes at least one battery cell 11 arranged along the second direction F2. That is, the battery string 10 can include one battery cell 11 extending along the second direction F2, or the battery string 10 can include a plurality of battery cells 11 arranged in sequence along the second direction F2.

[0053] 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. Note that the specific structure of the first reinforcing structure 21 is 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 of the rectangular plate 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 a shape other than a plate shape, as long as it can meet the requirement of improving the strength of the entire battery 1000. Optionally, the material of the first reinforcing structure 21 may be a metal such as steel or aluminum, or a non-metal such as a high-strength plastic or composite material, but the present application is not limited thereto.

[0054] As shown in FIGS. 1 to 8, 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.

[0055] For example, the number of the first reinforcing structures 21 may be one or plural. Among these, the more the number of the first reinforcing structures 21 is, the better the effect of improving the structural stability of the battery 1000 is. The first reinforcing structure 21 may be installed on one side of a 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 reinforcing structure 21 may be arranged in this order. The first reinforcing structure 21 may be provided between two adjacent battery rows 10, that is, in the first direction F1, one battery row 10, the first reinforcing structure 21, and another battery row 10 may be arranged in this order. In some embodiments where there are a plurality of the first reinforcing structures 21, at least one battery row 10 is provided between two adjacent first reinforcing structures 21, and the first reinforcing structure 21 may be provided between two adjacent battery rows 10 or on the same side of the plurality of battery rows 10.

[0056] Continuing to refer to FIGS. 1 to 8, in the second direction F2, at least one end of the first reinforcing structure 21 extends beyond the end face of the housing 111 of the corresponding end battery row 10. Specifically, all the housings 111 of the battery units 11 of the battery row 10 are arranged in a row along the second direction F2, and the end faces of the adjacent housings 111 that are away from the adjacent housings 111 located at both ends in the second direction F2 are the end faces of the housings 111 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 end faces of the housings 111 at both ends of the battery row 10 respectively correspond to the first end and the second end.

[0057] Here, the first end may extend beyond the end face of the corresponding housing 111 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 end face of the corresponding housing 111, or the second end may extend beyond the end face of the corresponding housing 111 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 end face of the corresponding housing 111, or the first end may extend beyond the end face of the corresponding housing 111 of the corresponding battery string 10 along the direction away from the second end, and the second end may extend beyond the end face of the corresponding housing 111 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 end faces of the housings 111 at both ends of the battery string 10, that is, the dimension of the first reinforcement structure 21 in the second direction F2 is larger than the distance between the end faces of the housings 111 at both ends of the battery string 10.

[0058] Since at least one end of the first reinforcement structure 21 extends beyond the end face of the corresponding housing 111, when a collision occurs, the excess portion of the first reinforcement structure 21 contacts the adjacent members such as the housing 40 earlier than the end face of the corresponding housing 111 of the battery string 10, so that the housing 111 is prevented from directly colliding, the housing 111 is prevented from being damaged, and further, the internal structure of the single battery 11 is also prevented from being damaged. In addition, it is also prevented that the external force is transmitted to the adjacent single battery 11 due to the collision of the end face of the housing 111, and the structural stability and safety of the entire battery string 10 and the entire battery 1000 are improved.

[0059] As a result, the dimensional design of the single battery 11 in the second direction F2 is not restricted. That is, the dimension of the single battery 11 in the second direction F2 can be increased (for example, 140 mm or more), meeting requirements such as large capacity and large mounting space, and the structural strength of the single battery 11 with a large dimension is high. Also, the dimension of the single battery 11 in the second direction F2 can be decreased (for example, less than 140 mm), meeting requirements such as avoiding a small mounting space, small capacity, low difficulty in the processing process of the single battery 11, and preventing the power performance from decreasing due to an overly long sheet, and making the small-sized single battery 11 less likely to be damaged under the action of the first reinforcing structure 21.

[0060] According to the battery 1000 according to the embodiment of the present application, in the second direction F2, since at least one end of the first reinforcing structure 21 exceeds the end face of the housing 111 corresponding to the battery row 10, the structural strength of the battery 1000 can be increased, preventing the housing 111 from colliding with adjacent members and being damaged, improving the stability and service life of the single battery 11, and ensuring the use safety and reliability of the battery 1000. And the dimension of the single battery 11 in the second direction F2 is designed more flexibly to meet 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.

[0061] In the embodiment of the present application, the dimension of the first reinforcing structure 21 exceeding the end face of the housing 111 corresponding to the battery row 10 can be set flexibly according to the actual situation.

[0062] For example, in some embodiments, an electrical connection portion 112 is provided on at least one end face of the battery row 10 in the second direction F2, and the first reinforcing structure 21 exceeds the electrical connection portion 112 at the corresponding end.

[0063] The electrical connection part 112 is a member for realizing the electrical connection of the single battery 11. For example, it may be the electrode terminal 113. The electrical connection part 112 is provided on the end face of the housing 111 which is the end face in 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.

[0064] The first reinforcement structure 21 extends beyond the end electrical connection part 112 of 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 112 of the corresponding end, and the second end is located on the side away from the first end of the electrical connection part 112 of the corresponding end.

[0065] Thereby, during a collision, the first reinforcement structure 21 contacts the member adjacent to it earlier than the electrical connection part 112, and it is possible to avoid the electrical connection part 112 directly colliding and being damaged. The first reinforcement structure 21 can protect not only the housing 111 but also the electrical connection part 112.

[0066] 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 112, and the first reinforcement structure 21 extends beyond the electrical connection member 12 of the corresponding end.

[0067] The electrical connection part 12 is for realizing the electrical connection between two electrical connection parts 112. For example, the electrical connection part 12 may be a merging sheet. The first reinforcement structure 21 extends beyond the electrical connection member 12 of 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 of the corresponding end, and the second end is located on the side away from the first end of the electrical connection member 12 of the corresponding end.

[0068] Thus, during a collision, the first reinforcement structure 21 contacts the member adjacent to the electrical connection member 12 earlier than the electrical connection member 12, avoiding direct collision of the electrical connection member 12 and damage to the electrical connection member 12 and the electrical connection structure. The first reinforcement structure 21 can protect the housing 111, the electrical connection part 112, and the electrical connection member 12, and can make the protection effect more reliable.

[0069] In some embodiments, 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 two adjacent battery strings 10 by the electrical connection part 12, and facilitating the series connection or parallel connection of the two battery strings 10.

[0070] 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 112 of two adjacent battery strings 10 through the avoidance through-hole.

[0071] The avoidance through-hole penetrates both side surfaces of the reinforcement plate to form a hollow structure, and the electrical connection member 12 passes through the reinforcement plate along the first direction F1 and is electrically connected to the electrical connection parts 112 of two battery strings 10 on both sides of the first reinforcement structure 21.

[0072] 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.

[0073] Here, in an embodiment where the first reinforcing structure 21 does not exceed the electrical connection portion 112 beyond the end face of the housing 111, 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 end face of the housing 111. In an embodiment where the first reinforcing structure 21 exceeds the electrical connection portion 112 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 end of the electrical connection portion 112. 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 end of the electrical connection member 12.

[0074] By the excess dimension of the first reinforcing structure 21 being within the above numerical range, the excess dimension is made large enough to prevent the single battery 11 from being damaged when receiving an impact. 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.

[0075] According to some embodiments of the present application, the thickness of the first reinforcing structure 21 in the first direction is 1 mm to 8 mm. For example, in some specific embodiments, the dimensions of the first reinforcing structure 21 are 1 mm, 3 mm, 5 mm, 7 mm, 8 mm, etc.

[0076] 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, it is advantageous for ensuring the structural reinforcement effect and impact resistance for the battery 1000, making the structure more compact and reducing the cost.

[0077] In some embodiments where the battery string 10 includes a plurality of single batteries 11, as shown in FIGS. 3, 5, and 8, the plurality of single batteries 11 in the same battery string 10 are connected to adjacent first reinforcing structures 21, and / or, as shown in FIG. 4, two adjacent single batteries 11 in the same battery string 10 are adhered via the viscose layer 30.

[0078] By connecting each of the plurality of battery units 11 of the same battery string 10 to the adjacent first reinforcing structure 21, the plurality of battery units 11 can be integrally connected by the first reinforcing structure 21, the structural strength of the battery string 10 can be further improved, and the impact resistance can be improved.

[0079] In the present application, there is no particular limitation on the connection method between each battery unit 11 and the first reinforcing structure 21, and for example, adhesion, welding, fastener connection, etc. may be used.

[0080] By adhering two adjacent battery units 11 of the same battery string 10 via a viscose layer 30 (structural adhesive), the adjacent battery units 11 of the same battery string 10 can be integrally connected, and the structural strength of the entire battery string 10 can be further improved.

[0081] Of course, in an embodiment where two adjacent battery units 11 of the same battery string 10 are adhered via a viscose layer 30 and each of the plurality of battery units 11 of the same battery string 10 is connected to the adjacent first reinforcing structure 21, the structural strength of the battery string 10 is more excellent.

[0082] In some embodiments of the present application, as shown in FIGS. 1 to 8, at least one 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. In other words, at least a three-layer structure of battery string 10 - first reinforcing structure 21 - battery string 10 is formed.

[0083] 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 the plurality of battery units 11 of the two battery strings 10 to each other, which is advantageous for reducing the number of the first reinforcing structures 21 and simplifying the structure of the battery 1000. Further, the first reinforcing structure 21 can also partition two adjacent battery strings 10, and 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.

[0084] According to some embodiments of the present application, as shown in FIG. 5, the reinforcement structure 20 further includes a second reinforcement structure 22 connected to the first reinforcement structure 21. The second reinforcement structure 22 extends along the first direction F1 and is stacked with the battery cells 11 of the same battery string 10 along the second direction F2.

[0085] On the other hand, the second reinforcement structure 22 is connected to the first reinforcement structure 21. For example, the second reinforcement structure 22 can be provided on one side of the battery string 10 of the first reinforcement structure 21, and the overall structure of the reinforcement structure 20 can be generally in a T-shaped or L-shaped structure with each first reinforcement structure 21 and each second reinforcement structure 22. The overall structural strength of the reinforcement structure 20 can be increased, and thus the strength enhancement effect on the battery 1000 can be enhanced. Optionally, the material of the second reinforcement structure 22 may be a metal such as steel or aluminum, or a non-metal such as a high-strength plastic or composite material. The second reinforcement structure 22 and the first reinforcement structure 21 may have the same material or different materials. The joining method between the second reinforcement structure 22 and the first reinforcement structure 21 may be adhesion, welding, fastener joining, integral molding, etc., and the present application does not limit this.

[0086] On the other hand, it is easy to stack the battery cells 11 of the same battery string 10 as the second reinforcement structure 22 along the second direction F2. For example, the second reinforcement structure 22 can be located on one side of the battery string 10 (including one or more battery cells 11) in the second direction F2. Alternatively, the second reinforcement structure 22 can be located between two adjacent battery cells 11, and a three-layer structure of battery cell 11 - second reinforcement structure 22 - battery cell 11 can be formed, which is more advantageous for further improving the strength. The second reinforcement structure 22 can partition two adjacent battery cells 11, and when a heat insulating material is used for the second reinforcement structure 22, the occurrence of heat diffusion can be avoided.

[0087] In some embodiments, as shown in FIG. 5, the battery string 10 includes a plurality of battery cells 11, and at least one second reinforcing structure 22 is provided between two adjacent battery cells 11. The second reinforcing structure 22 partitions two adjacent battery cells 11 and supports the two battery cells 11.

[0088] In some specific embodiments, as shown continuously in FIG. 5, since the electrical connection portions 112 are not provided on the end faces of two adjacent battery cells 11 that are close to each other, both end faces can be in direct surface contact with the second reinforcing structure 22, and the supporting effect and the strength enhancing effect are better.

[0089] In some embodiments, as shown in FIG. 5, second reinforcing structures 22 are respectively provided on both sides of the first reinforcing structure 21 in the first direction F1.

[0090] Here, 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 arranged according to the strength enhancement requirements and the number of the battery cells 11 included in the battery string 10.

[0091] According to some embodiments of the present application, as shown in FIGS. 1 to 2 and FIGS. 6 to 7, 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.

[0092] 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 structures 21, the number of the battery strings 10, and the requirement of the 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 disposed between two adjacent battery strings 10, and two battery strings 10 are disposed between any two adjacent first reinforcing structures 21.

[0093] 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, so that the processing of the reinforcing structure 20 is facilitated, and the assembly of the reinforcing structure 20 and the single battery 11 is facilitated. Alternatively, by connecting the second reinforcing structures 22 on two adjacent first reinforcing structures 21 to connect two adjacent first reinforcing structures 21 with the second reinforcing structure 22 and making the reinforcing structure 20 into a fishbone structure or a mesh structure, the overall structural strength can be further improved.

[0094] According to some embodiments of the present application, as shown in FIGS. 2 and 7, in the third direction, the dimension of the reinforcing 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.

[0095] For example, the battery string 10 has end faces such as an upper end face and a lower end face facing each other in the third direction F3. The dimension of the reinforcing structure 20 is smaller than or equal to the distance between the end faces, which is advantageous for reducing the occupied space of the reinforcing structure 20 in the third direction F3, and is advantageous for reducing the overall dimension of the battery 1000 in the third direction F3, so that the battery 1000 can be used in a smaller mounting space, such as the mounting space under a vehicle.

[0096] 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 battery cell 11 to adjust the temperature of the battery cell 11.

[0097] 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, or the like. The thermal connection may be a direct contact connection, or a thermal conductive pad, a thermal conductive adhesive, etc. may be arranged between the reinforcement structure 20 and the adjacent battery cell 11 to enhance the thermal conductivity. Adjusting the temperature of the battery cell 11 may be to cool the battery cell 11 to dissipate heat, or to heat the battery cell 11 to increase the temperature, both of which are within the protection scope of the present application. Hereinafter, the present embodiment will be described by taking the heat dissipation of the battery cell 11 as an example, but the working process of heating the battery cell 11 to increase the temperature can also be understood from the following description.

[0098] Thereby, the reinforcement structure 20 and the heat exchange structure are integrally designed. The heat exchange medium can be passed through the passage, and the heat generated during the operation of the battery cell 11 is conducted to the reinforcement structure 20 and then conducted through the heat exchange medium in the passage to achieve heat dissipation of the battery cell 11, and the functions of the reinforcement structure 20 can be made more diverse.

[0099] For example, in an embodiment where the reinforcement structure 20 includes a first reinforcement structure 21, the first reinforcement structure 21 may have a passage for accommodating a heat exchange medium. 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. Among them, in an embodiment where both the first reinforcement structure 21 and the second reinforcement structure 22 have a passage for accommodating a heat exchange medium, the battery cell 11 can dissipate heat from different sides.

[0100] In some embodiments, as shown in FIGS. 1 and 6, 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 31 and a confluence member 32. The shunt member 31 and the confluence member 32 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 31, and the outlet of the passage communicates with the confluence member 32.

[0101] The shunt member 31, the confluence member 32, and the first reinforcement structure 21 can form a flow path of the heat exchange medium. That is, the heat exchange medium can flow into the passage of the first reinforcement structure 21 through the shunt member 31, and after heat exchange, it can flow out through the confluence member 32. In an embodiment including a plurality of first reinforcement structures 21, the heat exchange medium can respectively flow into the passages of the plurality of first reinforcement structures 21 through the shunt member 31, and after heat exchange, it can merge into the confluence member 32 and flow out through the confluence member 32. Thereby, the reinforcement structure 20 can realize connection with an external cooling / heating system through the shunt member 31 and the confluence member 32, which is advantageous for simplifying pipe connection.

[0102] In the present application, the specific structures of the shunt member 31 and the confluence member 32 are not particularly limited. For example, the shunt member 31 and the confluence member 32 may have any structure such as a pipe body or a plate body, as long as the requirement of being able to communicate with the passages of the plurality of first reinforcement structures 21 is satisfied.

[0103] In some embodiments of the present application, the reinforcement structure 20 has a buffer portion that deforms when pressed against the single battery 11.

[0104] The buffer part 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 part 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 part, when the expansion force changes during the use of the single battery 11, pressure can be applied to the buffer part, causing the buffer part to deform and adjust the pressing force on the single battery 11, so that the single battery 11 is not overly pressurized and the infiltration becomes poor, or does not become overly loose and the interface deteriorates.

[0105] In the embodiments of the present application, the specific configuration of the buffer part can be flexibly installed according to the actual situation. For example, the buffer part can include a buffer material layer. And / or, the buffer part can include a hollow chamber provided in the reinforcing structure 20.

[0106] Here, the buffer material 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 material layer can deform when receiving a pressing force to exert a buffering effect.

[0107] The buffer part may include a hollow chamber provided in the reinforcing structure 20, which can deform the reinforcing structure 20 when pressed, and the volume of the hollow chamber can be reduced to achieve 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 partitioned from each other and formed in a honeycomb shape, all of which are within the protection scope of the present application. The reinforcing structure 20 is integrated with the buffer structure and designed integrally to achieve diversification of functions.

[0108] In some embodiments, the side surface adjacent to the first reinforcing structure 21 in the first direction F1 of the single battery 11 is the surface with the largest area. In other words, the single battery 11 has at least one surface with the largest area, and this surface is adjacent to the first reinforcing structure 21. The first reinforcing structure 21 provides stable support for the surface with the largest area. In embodiments where the first reinforcing structure 21 has a passage, heat exchange with the surface with the largest area can be performed more efficiently.

[0109] In some embodiments, as shown in FIGS. 1-2 and FIGS. 6-7, both side surfaces of the single battery 11 facing each other in the first direction F1 are surfaces with the largest area.

[0110] In other words, among all the side surfaces of the housing 111 of the single battery 11, the areas of the two side surfaces facing each other along the first direction F1 are the largest, and the first reinforcing structure 21 can be connected to the surface of the single battery 11 with the largest area. On the one hand, the support stability of the first reinforcing structure 21 for the battery string 10 is improved. On the other hand, the heat dissipation amount is large on the surface with the largest area. In embodiments where the first reinforcing structure 21 has a passage, it is advantageous for improving the heat dissipation efficiency of the single battery 11.

[0111] In some embodiments, as shown in FIG. 1, the dimension of the single battery 11 in the second direction F2 is larger than the dimension in the first direction F1, and the plurality of battery strings 10 of the battery 1000 can be stacked and arranged along the direction with a smaller dimension, which is advantageous for making the structure more compact.

[0112] In some embodiments, as shown in FIG. 1, 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.

[0113] 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, with the thickness direction of the single battery 11 being the horizontal direction. The horizontal width of the battery 1000 is also small, enabling a compact configuration.

[0114] According to some embodiments of the present application, as shown in FIGS. 1 to 5, 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. As shown in FIGS. 11 and 12, the electrical connection portion 112 of each single battery 11 includes two electrode terminals 113 provided on the same side. The two electrode terminals 113 can be respectively used as the positive electrode terminal and the negative electrode terminal, and both electrode terminals 113 can be electrically connected on the same side of the single battery 11. The electrical connection structure can share the same space, which is beneficial for the compactness of the structure.

[0115] In some embodiments, as shown in FIGS. 1 to 5, the electrical connection portions 112 of the two single batteries 11 in the same battery row 10 are arranged on the opposite sides of each other. The electrical connection portions 112 of the single batteries 11 located on the same side of 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 portions 112 of the 32 battery rows 10 are formed in two rows at intervals in the second direction F2, and each row includes 32 electrical connection portions 112 arranged along the first direction F1.

[0116] Thereby, the distance between the plurality of electrical connection portions 112 in the same row is closer, facilitating the electrical connection between the single batteries 11. In addition, the bottoms of the two single batteries 11 in the same battery row 10 (i.e., the ends facing away from the electrical connection portion 112) can be connected face to face, realizing the support and limitation between the two single batteries 11 and making the overall structure more stable.

[0117] In some other embodiments, the electrical connection portions 112 of two battery units 11 of the same battery string 10 are provided on opposite sides of each other and are connected to each other by welding, applying a conductive adhesive, or the like. In the same battery string 10, the electrical connection portions 112 of the two battery units 11 can be directly connected. On the other hand, it can serve to support the two battery units 11 in the second direction F2, which is advantageous for improving the overall structural strength of the battery string 10. It can also eliminate the need for structures such as a merging sheet or an adapter sheet, which is advantageous for space saving. On the other hand, it can realize electrically connecting the two battery units 11, and the battery units 11 in the same battery string 10 can be connected in series or in parallel. Since the electrical connection structure is located in the middle of the battery 1000, it can prevent direct collision with the electrical connection structure during a side collision.

[0118] According to some other embodiments of the present application, as shown in FIGS. 6 and 7, each battery string 10 includes a plurality of battery units 11, for example, two or more. The electrical connection portion 112 of each battery unit 11 includes two electrode terminals 113 respectively provided on both sides thereof, that is, the two electrode terminals 113 are drawn out from both ends of the battery unit 11.

[0119] The opposing electrode terminals 113 of two adjacent battery units 11 in the same battery string 10 are electrically connected to each other. For example, the opposing electrode terminals 113 are directly welded and connected, or a conductive adhesive is applied for connection, or they are electrically connected via an adapter. This realizes electrically connecting the plurality of battery units 11 in the same battery string 10 and can make the overall structure more compact. Also, since the electrical connection structure is located in the middle of the battery 1000, it can prevent direct collision with the electrical connection structure during a side collision.

[0120] In the embodiments of the present application, the single battery 11 can be a hard housing single battery or a soft pack single battery. The electrode terminal 113 of the hard housing single battery has a columnar structure, has high strength, can be directly in contact with each other, and serves both as a support and a limit. The electrode terminal 113 of the soft pack single battery can be in a sheet-like structure, and the opposing electrode terminals 113 can be stacked and directly connected, so that the occupied space can be made smaller.

[0121] In an embodiment where the battery string 10 includes a plurality of single batteries 11, the number of single batteries 11 may be 2 to 4, and it is possible to avoid the overall dimensions of the battery 1000 becoming too large due to too many single batteries 11.

[0122] According to some embodiments of the present application, as shown in FIGS. 10 to 12, the single battery 11 is provided with a pressure relief portion 114 and an electrical connection portion 112. 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 (for example, 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 exploding and burning due to the internal pressurization of the single battery 11 being too fast. The pressure relief portion 114 may be, for example, an explosion-proof valve or an explosion-proof sheet.

[0123] In addition, the pressure relief portion 114 and the electrical connection portion 112 are provided on different sides of the single battery 11. It is advantageous to ensure a large distance between the electrical connection portion 112 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 or the like do not flow into its own electrical connection portion 112, and problems such as poor insulation, high-voltage ignition, and explosion and ignition can be effectively avoided.

[0124] In some embodiments, as shown in FIGS. 10 to 12, the single battery 11 has a first surface and a second surface that face each other along the second direction F2, and a peripheral surface that connects the first surface and the second surface.

[0125] As shown in FIG. 12, the electrical connection portion 112 is provided on the first surface, and the pressure relief portion 114 is provided on the second surface. In other words, the pressure relief portion 114 and the electrical connection portion 112 are provided on both opposite side surfaces of the single battery 11, respectively. Thereby, the distance between the electrical connection portion 112 and the pressure relief portion 114 can be made farther, and the electrical connection portion 112 can be better ensured not to be affected by the emissions discharged from the pressure relief portion 114, that is, the probability of being affected can be made smaller, and the safety and reliability in the use of the battery 1000 can be further improved.

[0126] As shown in FIGS. 10 and 11, the electrical connection portion 112 is provided at at least one location among the first surface and the second surface, and the pressure relief portion 114 is provided on the circumferential surface. For example, the two electrode terminals 113 of the electrical connection portion 112 are provided on the same surface, or are provided on the first surface and the second surface, respectively.

[0127] Thereby, the electrical connection portion 112 and the pressure relief portion 114 are respectively located on the adjacent sides of the single battery 11, and a certain safe distance can be provided between the electrical connection portion 112 and the pressure relief portion 114, reducing the influence of the emissions discharged from the pressure relief portion 114 on the electrical connection portion 112, and improving the safety and reliability in the use of the battery 1000.

[0128] In some specific embodiments, as shown in FIGS. 1, 6, and 10 to 11, among two adjacent battery rows 10, the circumferential surfaces of the two battery rows 10 face each other. In the same battery row 10, the first surface and the second surface of two adjacent single batteries 11 face each other. The pressure relief portion 114 is provided on a circumferential surface such as a surface on one side in the third direction F3.

[0129] As a result, the pressure relief portions 114 of the individual battery units 11 within the same battery string 10 will neither jet toward any of the electrical connection portions 112 within the present battery string 10 nor jet toward any of the electrical connection portions 112 within an adjacent battery string 10. Therefore, the electrical connection portions 112 of each battery unit 11 can be effectively protected from being affected by the emissions discharged from other battery units 11, ensuring the safety and reliability in the use of the battery 1000.

[0130] The power consumption device 2000 according to an embodiment of the second aspect of the present application includes the battery 1000 according to the above-described embodiment of the first aspect of the present application, and the battery 1000 is used to supply electrical energy to the power consumption device 2000. Thus, 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.

[0131] Optionally, as shown in FIG. 13, 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 the 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 and is used, for example, for the starting, navigation, and working power requirements during driving of the vehicle.

[0132] Hereinafter, with reference to the accompanying drawings, a battery 1000 according to one specific embodiment of the present application and a vehicle having the same will be described.

[0133] As shown in FIG. 13, the battery 1000 is provided on the chassis of the vehicle. As shown in FIGS. 1 to 3, the battery 1000 includes a housing 40 and 32 battery strings 10 provided in the housing 40 and arranged along the first direction F1 which is the first horizontal direction. Each battery string 10 includes two battery units 11 arranged along the second direction F2 which is the second horizontal direction. The battery unit 11 includes a housing 111, a positive electrode terminal and a negative electrode terminal provided at one end of the housing 111 in the second direction F2. For the two battery units 11 in the same battery string 10, the electrode terminals 113 are provided on the opposite sides of each other. The housing 111 of each battery unit 11 has a dimension in the second direction F2 larger than the dimension in the 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 unit 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.

[0134] The reinforcing structure 20 includes 16 first reinforcing structures 21, and the first reinforcing structure 21 has a flat plate structure. 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 30 are provided on both side surfaces of the first reinforcing structure 21. By adhering the surfaces with the largest areas of the battery units 11 on both sides to form an integral structure, a laminated structure of battery unit 11 - first reinforcing structure 21 - battery unit 11 is formed, and the strength of the battery 1000 is further enhanced.

[0135] Two adjacent battery strings 10 are electrically connected via an electrical connection part 12. Both ends of each first reinforcing structure 21 in the second direction F2 extend beyond the edges of the corresponding electrical connection part 12 to perform a supporting function and prevent impacts on the electrical connection part 12, the electrode terminal 113 and the housing 111 of the battery unit 11 during a side collision. A cavity, that is, an avoidance through hole, can be further provided in the first reinforcing structure 21, which is used to avoid the electrical connection part 12 and facilitate the realization of the high-voltage connection of the battery units 11 on both sides by the electrical connection part 12.

[0136] Meanwhile, the battery 1000 includes a confluence member 32 and a diversion member 31. The first reinforcement structure 21 has a passage for accommodating a heat exchange medium, and it is possible to communicate the ends on the same side of a plurality of first reinforcement structures 21 with the diversion member 31, and the ends on the other side of the plurality of first reinforcement structures 21 are communicated with the confluence member 32 to play the role of confluence and diversion of the heat exchange medium. The heat exchange medium can perform heat exchange with the single battery 11 through the plurality of first reinforcement structures 21. The first reinforcement structure 21 corresponds to an integrated design of a heat exchange plate and a reinforcement plate.

[0137] In addition, a hollow chamber is provided in the passage of the first reinforcement structure 21, and a buffer portion that can be deformed under the pressing of the surface with the largest area of the single battery 11 is formed. By providing the buffer portion, it is possible to adjust the surface interval with the largest area between adjacent single batteries 11, and avoid the problem that the gap becomes too large in the early stage and the gap becomes insufficient in the later stage.

[0138] By providing the reinforcement structure 20, after forming the single battery 11 and the assembled battery 1000, the overall strength and stability of the battery 1000 can be enhanced, preventing the single battery 11 from being damaged by impact and avoiding safety hazards.

[0139] It should be noted that the examples and features in the embodiments in this specification may be combined with each other without conflict.

[0140] The above are only preferred embodiments of the present application, and do not limit the present application. The present application can be variously changed and modified by 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

[0141] Battery 1000; Power consumption device 2000; Battery string 10; Single battery 11; Housing 111; Electrical connection part 112; Electrode terminal 113; Pressure relief part 114; Electrical connection member 12; Reinforcing structure 20; First reinforcing structure 21; Second reinforcing structure 22; Viscose layer 30; Diverging member 31; Converging member 32; 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 at least one battery cell (11) arranged along a second direction (F2) perpendicular to the first direction (F1), each of the battery cells (11) having a housing (111); and a plurality of battery strings (10); A reinforcement structure (20) including a first reinforcement structure (21) extending along the second direction (F2), the first reinforcement structure (21) being stacked and arranged along the first direction (F1) with the plurality of battery strings (10); and the reinforcement structure (20); The battery (1000), wherein in the second direction (F2), at least one end of the first reinforcement structure (21) extends beyond an end face of the housing (111) of the corresponding battery string (10).

2. The battery (1000) according to claim 1, wherein an electrical connection portion (112) is provided at at least one end face of the battery string (10) in the second direction (F2), and the first reinforcement structure (21) extends beyond the electrical connection portion (112) at the corresponding end.

3. The battery (1000) according to claim 2, further comprising an electrical connection member (12) connected to the electrical connection portion (112), and the first reinforcement structure (21) extends beyond the electrical connection member (12) at the corresponding end.

4. The battery (1000) according to claim 3, wherein the first reinforcement structure (21) is a reinforcement plate, and an avoidance through hole is provided in the reinforcement plate, and the electrical connection member (12) connects the electrical connection portions (112) of two adjacent battery strings (10) through the avoidance through hole.

5. The battery (1000) according to any one of claims 1 to 4, wherein an excess dimension of the first reinforcement structure (21) in the second direction (F2) is 3 mm to 50 mm.

6. The battery (1000) according to any one of claims 1 to 5, wherein a thickness of the first reinforcement structure (21) in the first direction (F1) is 1 mm to 8 mm.

7. The battery (1000) according to any one of claims 1 to 6, wherein the battery string (10) includes a plurality of the battery cells (11), and a plurality of the battery cells (11) in the same battery string (10) are all connected to the adjacent first reinforcement structure (21), and / or two adjacent battery cells (11) in the same battery string (10) are adhered via a viscose layer (30).

8. At least one of the first reinforcing structures (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). The battery (1000) according to any one of claims 1 to 7.

9. The reinforcing structure (20) further includes a second reinforcing structure (22) connected to the first reinforcing structure (21). The second reinforcing structure (22) extends along the first direction (F1) and is stacked and arranged along the battery units (11) of the same battery string (10) and the second direction (F2). The battery (1000) according to any one of claims 1 to 8.

10. The battery string (10) includes a plurality of the battery units (11), and at least one of the second reinforcing structures (22) is provided between two adjacent battery units (11). The battery (1000) according to claim 9.

11. The second reinforcing structures (22) are respectively installed on both sides of the first reinforcing structure (21) in the first direction (F1). The battery (1000) according to claim 9 or 10.

12. The first reinforcing structure (21) is a plurality of reinforcing structures arranged 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. The battery (1000) according to any one of claims 9 to 11.

13. In the third direction (F3), the dimension of the reinforcing structure (20) is smaller than or equal to the distance between the end faces of 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). The battery (1000) according to any one of claims 1 to 12.

14. The reinforcing structure (20) has a passage for accommodating a heat exchange medium. The reinforcing structure (20) is thermally connected to the adjacent battery units (11) to adjust the temperature of the battery units (11). The battery (1000) according to any one of claims 1 to 13.

15. 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 (31) and a confluence member (32), the shunt member (31) and the confluence member (32) are respectively located on both sides of the battery string (10) in the second direction (F2), the inlet of the passage of each first reinforcing structure (21) communicates with the shunt member (31), and the outlet of the passage communicates with the confluence member (32). The battery (1000) according to claim 14.

16. The reinforcing structure (20) has a buffer portion suitable for deformation by pressing of the single battery (11). The battery (1000) according to any one of claims 1 to 15.

17. The buffer portion includes a buffer material layer, and / or The buffer portion includes a hollow chamber provided in the reinforcing structure (20). The battery (1000) according to claim 16.

18. The side surface of the single battery (11) adjacent to the first reinforcing structure (21) along the first direction (F1) is the surface with the largest area. The battery (1000) according to any one of claims 1 to 17.

19. Both side surfaces of the single battery (11) facing each other along the first direction (F1) are surfaces with the largest area. The battery (1000) according to any one of claims 1 to 18.

20. The dimension of the single battery (11) in the second direction (F2) is larger than the dimension in the first direction (F1). The battery (1000) according to any one of claims 1 to 19.

21. Each battery string (10) includes two single batteries (11), and the electrical connection portion (112) of each single battery (11) includes two electrode terminals (113) provided on the same side. The electrical connection portions (112) of the two single batteries (11) are provided on the back-to-back sides of each other, or the electrical connection portions (112) of the two single batteries (11) are provided on the opposite sides of each other and are connected to each other. The battery (1000) according to any one of claims 1 to 20.

22. Each of the battery strings (10) includes a plurality of the battery units (11). The electrical connection portions (112) of each of the battery units (11) include two electrode terminals (113) respectively provided on both sides, and the opposing electrode terminals (113) of two adjacent battery units (11) are electrically connected. The battery (1000) according to any one of claims 1 to 20.

23. A pressure relief portion (114) and an electrical connection portion (112) are provided in the battery unit (11), and the pressure relief portion (114) and the electrical connection portion (112) are provided on different sides of the battery unit (11). The battery (1000) according to any one of claims 1 to 22.

24. A power consumption device (2000) includes the battery (1000) according to any one of claims 1 to 23, and the battery (1000) is used to supply electrical energy to the power consumption device (2000). The power consumption device (2000).

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