Reinforcing plate, battery pack assembly and electrical device

Abstract

A reinforcing plate (110), a battery pack assembly (100) and an electrical device. The reinforcing plate (110) comprises a main body part (111) and a support connection part (112). The main body part (111) is adapted to connect to a battery cell component (140). One end of the support connection part (112) is connected to the end part of the main body part (111) in a first direction, while the other end of the support connection part (112) is adapted to connect to a casing of a battery pack, the first direction being a direction perpendicular to the thickness direction of the main body part (111). By connecting the main body part (111) to the battery cell component (140) and connecting the end part of the support connection part (112) away from the main body part (111) to the casing of the battery pack, the reinforcing plate (110), the battery cell component (140) and the casing form a whole body, so that the battery cell component (140) can move and vary along with the reinforcing plate (110), that is, the reinforcing plate (110) can transfer force between the battery cell component (140) and the casing, thereby helping to improve the vibration resistance of the battery cell component (140) in operating conditions such as vibration.

Description

Reinforcement plate, battery pack assembly and electrical equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on January 31, 2024, with application number 202420247365.3 and application name “Reinforcement plate, battery pack assembly and electrical equipment”, all contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the technical field of batteries, and more particularly to a reinforcing plate, a battery pack assembly, and electrical equipment. Background Art

[0004] The battery cell components in the battery pack in the related art are prone to shaking when the battery pack vibrates, colliding with the battery pack shell or other components in the battery pack, causing damage to the battery cells, and then causing serious risks such as leakage, arcing and short circuit. Summary of the Invention

[0005] The Summary of the Invention introduces a series of simplified concepts that will be further described in the Detailed Description of the Invention. The Summary of the Invention of this application is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0006] In order to at least partially solve the above problems, the present application provides a reinforcement plate in a first aspect, comprising:

[0007] a main body portion, the main body portion being adapted to be connected to a battery cell assembly; and

[0008] A support connection portion, one end of which is connected to the end of the main body along a first direction, and the other end of which is suitable for being connected to the shell of the battery pack, wherein the first direction is a direction perpendicular to the thickness direction of the main body.

[0009] According to the reinforcement plate of the first aspect of the present application, in the installed state, the reinforcement plate, the battery cell assembly and the shell are formed into a whole by connecting the main body to the battery cell assembly and connecting the end of the supporting connection part away from the main body to the shell of the battery pack, so that the battery cell assembly can move and change with the reinforcement plate, that is, the reinforcement plate can transmit force between the battery cell assembly and the shell, thereby helping to improve the anti-vibration performance of the battery cell assembly when vibration and other working conditions occur.

[0010] Optionally, the supporting connection portion and the main body portion are arranged at an angle.

[0011] Optionally, the included angle between the supporting connection portion and the main body portion is denoted as α, and 0<α<π, the dimension of the supporting connection portion along the first direction is denoted as L, and the dimension of the supporting connection portion along the thickness direction of the main body portion is denoted as H, then the relationship among α, L and H satisfies

[0012] Optionally, a flow channel suitable for flowing fluid is formed inside the main body, and the main body is suitable for cooling the battery core assembly.

[0013] Optionally, the reinforcing plate further includes a heat conducting portion, which is connected to the main body portion, and the heat conducting portion is suitable for being arranged between the main body portion and the battery core assembly and closely attached to the battery core assembly.

[0014] Optionally, the reinforcing plate includes two supporting connection parts arranged opposite to each other, and the two supporting connection parts are respectively connected to the two ends of the main body. The two supporting connection parts and the main body form a first accommodating space, and the first accommodating space is suitable for accommodating the battery cell assembly.

[0015] Optionally, the reinforcement plate includes:

[0016] First Board; and

[0017] The second plate is a bent plate member, the bent plate member includes an intermediate plate body and two bent plate bodies, a flow channel groove is formed on the intermediate plate body and / or the first plate, the intermediate plate body and the first plate are stacked and sealed in the thickness direction to enclose and form the flow channel suitable for circulating fluid, the intermediate plate body and the first plate constitute the main body, the two bent plate bodies are connected to the two ends of the intermediate plate body along the first direction, and the bent plate body constitutes the supporting connection part.

[0018] Optionally, the end of the support connection portion away from the main body portion includes a first connection hole, and the first connection hole is suitable for being connected to the housing of the battery pack through a fastener; and / or

[0019] The main body portion includes a second connection hole adapted to be connected to the housing of the battery pack via a fastener.

[0020] A second aspect of the present application provides a battery pack assembly, which includes the above-mentioned reinforcement plate.

[0021] According to the battery pack assembly of the second aspect of the present application, by applying the above-mentioned reinforcement plate, the vibration-proof performance of the battery pack assembly when vibration and other working conditions occur can be improved.

[0022] Optionally, the battery pack assembly further includes:

[0023] a housing, wherein the housing is formed with a cavity, the reinforcing plate is located in the cavity and connected to the housing, and a second accommodating space is enclosed between the housing and the reinforcing plate; and

[0024] A battery cell assembly is connected to the second accommodating space.

[0025] Optionally, poles are provided at opposite ends of the battery cell assembly along a first direction, and the first direction is perpendicular to a height direction of the battery cell assembly;

[0026] The reinforcing plate includes two supporting connection parts that are arranged opposite to each other. The two supporting connection parts are respectively connected to two ends of the main body, and the two supporting connection parts are located on both sides of the battery core assembly along the first direction.

[0027] In the battery pack assembly of the present application, the two supporting connections of the reinforcement plate protect the ends of the cell assembly with the poles. Under the protection of the supporting connections, the ends of the cell assembly with the poles are less likely to deform during vibration. Especially during severe vibration, the reinforcement plate effectively prevents deformation or even failure of the ends of the cell assembly with the poles.

[0028] Optionally, the housing includes:

[0029] Pallets; and

[0030] A cover body is connected to the tray to form a cavity between the cover body and the tray, and the cover body is connected to the reinforcing plate to enclose the reinforcing plate to form the second receiving space.

[0031] Optionally, a flow channel suitable for flowing fluid is formed inside the main body, and the main body is suitable for cooling the battery core assembly;

[0032] The battery pack assembly includes a heat conducting portion connected between the main body and the battery cell assembly along a height direction of the battery cell assembly to transfer heat between the main body and the battery cell assembly.

[0033] Optionally, the battery pack assembly further includes a heat insulating member connected between the tray and the main body of the reinforcing plate along the height direction of the battery cell assembly to prevent heat from being transferred between the reinforcing plate and the tray.

[0034] Optionally, the heat insulating component is constructed as a component made of foam rubber.

[0035] Optionally, in the height direction of the battery cell assembly, a structural adhesive layer is provided between the battery cell assembly and the cover body, and the structural adhesive layer is constructed as a structural layer formed after the structural adhesive coated between the battery cell assembly and the cover body is cured, and the structural adhesive layer is suitable for bonding the battery cell assembly and the cover body.

[0036] Optionally, the battery pack assembly further includes two stop members arranged relative to each other, the stop members being fixedly connected to the cover body, and the two stop members being located on both sides of the battery cell assembly along a second direction to prevent the battery cell assembly from moving along the second direction, and the second direction is perpendicular to the height direction and the first direction.

[0037] A third aspect of the present application provides an electrical device, which includes the above-mentioned battery pack assembly.

[0038] According to the electrical equipment of the third aspect of the present application, the safety and service life of the electrical equipment can be improved by applying the above-mentioned battery pack assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The following drawings of the embodiments of the present application are hereby incorporated as part of the present application for understanding the present application. The drawings show the embodiments of the present application and their descriptions, and are used to explain the principles of the present application. In the drawings,

[0040] FIG1 is an exploded perspective view of a battery pack assembly according to a preferred embodiment of the present application;

[0041] FIG2 is a top view of the battery pack assembly shown in FIG1 ;

[0042] FIG3 is a cross-sectional view taken along line AA in FIG2 ;

[0043] FIG4 is an enlarged view of portion I in FIG3; and

[0044] FIG. 5 is a perspective view of the reinforcing plate shown in FIG. 1 .

[0045] Explanation of the reference numerals: 100: battery pack assembly; 100a: chamber; 100b: second accommodating space; 110: reinforcement plate; 110a: flow channel; 110b: first accommodating space; 111: main body; 112: supporting connection portion; 113: first plate; 113a: flow channel groove; 114: second plate; 114a: intermediate plate body; 114b: bent plate body; 114c: flange; 114d: rivet; 114e: second connecting hole; 120: tray; 130: cover; 131: stop member; 140: battery cell assembly; 150: heat conducting portion; 160: structural adhesive layer; 170: thermal insulation member; D1: first direction; D2: second direction; D3: height direction. DETAILED DESCRIPTION

[0046] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present application. However, it will be apparent to those skilled in the art that the present application embodiments can be implemented without one or more of these details. In other examples, some technical features well known in the art are not described to avoid confusion with the present application embodiments.

[0047] In order to fully understand the embodiments of the present application, a detailed structure will be presented in the following description. Obviously, the implementation of the embodiments of the present application is not limited to the specific details familiar to those skilled in the art.

[0048] It should be understood that the terminology used herein is intended only to describe specific embodiments and is not intended to limit the present application. The singular forms "a," "an," and "the" are intended to include the plural forms, unless the context clearly indicates otherwise. When the terms "comprise" and / or "include" are used in this specification, they indicate the presence of the described features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or combinations thereof.

[0049] Ordinal numbers such as "first" and "second" used in this application are merely identifiers and do not convey any other meaning, such as a specific order. Furthermore, for example, the term "first component" itself does not imply the existence of a "second component," nor does the term "second component" itself imply the existence of a "first component." It should be noted that the terms "upper," "lower," "front," "back," "left," "right," "inner," "outer," and similar expressions used in this application are for illustrative purposes only and are not limiting.

[0050] The terms "parallel" / "perpendicular" and similar expressions used in this application include absolute parallel / perpendicular relationships and approximately parallel / perpendicular relationships (for example, a relationship that differs from absolute parallel / perpendicular by -5° to +5°), which can have equivalent effects.

[0051] The present application provides a reinforcement plate 110, a battery pack assembly 100, and an electrical device. The battery pack assembly 100 includes the reinforcement plate 110. The electrical device includes the battery pack assembly 100. The electrical device may include, but is not limited to, vehicles, ships, energy storage cabinets, drones, and electronic cigarettes. Vehicles may include, but are not limited to, gasoline-powered vehicles, hybrid vehicles, electric two-wheelers, and electric multi-wheelers.

[0052] Hereinafter, the specific implementation of the reinforcing plate 110, battery pack assembly 100 and electrical equipment of the present application will be described in more detail with reference to Figures 1 to 5. These figures illustrate representative implementations of the present application and do not limit the present application.

[0053] As shown in Figures 1 and 3 to 5, the reinforcing plate 110 according to the present application may include a main body 111 and a supporting connection portion 112. The main body 111 is suitable for connection to the battery cell assembly 140. The connection between the main body 111 and the battery cell assembly 140 may be a fixed connection or a close fit. One end of the supporting connection portion 112 is fixedly connected to the end of the main body 111 along the first direction D1. The other end of the supporting connection portion 112 is suitable for connection to the shell of the battery pack. The first direction D1 is a direction perpendicular to the thickness direction of the main body 111. The shell here includes a cover 130, a tray 120 and other structures connected to the cover 130 or the tray 120.

[0054] According to the reinforcing plate 110 of the present application, in the installed state, by connecting the main body 111 to the battery cell assembly 140 and connecting the end of the supporting connection part 112 away from the main body 111 to the shell of the battery pack, the reinforcing plate 110, the battery cell assembly 140 and the shell form a whole, so that the battery cell assembly 140 can move and change together with the reinforcing plate 110, that is, the reinforcing plate 110 can transmit force between the battery cell assembly 140 and the shell, thereby helping to improve the anti-vibration performance of the battery cell assembly 140 when vibration and other working conditions occur.

[0055] 1, 3, and 5, for example, the support connection portion 112 and the main body portion 111 are arranged to intersect. By arranging the support connection portion 112 and the main body portion 111 at an angle, when the reinforcing plate 110 is connected to the battery cell assembly 140 and the housing, external impact forces such as vibration along the height direction D3 of the housing can be transmitted, thereby achieving the purpose of vibration isolation.

[0056] Furthermore, the angle between the support connection portion 112 and the main body portion 111 is recorded as α. And 0<α<π, that is, α is an obtuse angle. The dimension of the support connection portion 112 along the first direction D1 is recorded as L. The dimension of the support connection portion 112 along the thickness direction of the main body portion 111 is recorded as H. When the reinforcing plate 110 is installed to the battery pack assembly 100, the thickness direction is the height direction D3 of the battery pack assembly 100. Then the relationship between α, L and H satisfies

[0057] When α, L, and H satisfy the above formula, better force transmission performance can be achieved while ensuring the structural strength of the reinforcing plate 110 .

[0058] Referring to Figures 3 and 4 , for example, a flow channel 110a is formed within the main body 111 for circulating a fluid. The main body 111 is adapted to cool the battery cell assembly 140. By providing the flow channel 110a within the main body 111, the reinforcing plate 110 functions as a cold plate, cooling the battery cell assembly 140 when connected thereto. The flow channel 110a can be used to circulate a refrigerant fluid.

[0059] Referring to Figures 1 and 3 to 5, the reinforcing plate 110 may further include a heat conducting portion 150. The heat conducting portion 150 is connected to the main body 111. The heat conducting portion 150 is adapted to be disposed between the main body 111 and the battery cell assembly 140 and to be closely attached to the battery cell assembly 140. Here, the heat conducting portion 150 is connected to the main body 111, that is, the heat conducting portion 150 is integrated into the reinforcing plate 110. This can improve the heat exchange efficiency of the reinforcing plate 110 while reducing the number of parts, thereby helping to improve the assembly efficiency of the battery pack assembly 100.

[0060] Optionally, the heat conducting portion 150 may be made of a structure such as a heat conducting adhesive.

[0061] Continuing to refer to Figures 1 and 3 to 5, for example, the reinforcing plate 110 may include two supporting connection parts 112 arranged opposite to each other. The two supporting connection parts 112 are respectively connected to the two ends of the main body 111. A first accommodating space 110b is formed between the two supporting connection parts 112 and the main body 111. The first accommodating space 110b is suitable for accommodating the battery cell assembly 140. By arranging two supporting connection parts 112 arranged opposite to each other on the reinforcing plate 110, and accommodating the battery cell assembly 140 through the first accommodating space 110b formed by the two supporting connection parts 112 and the main body 111, the reinforcing plate 110 can be used to protect the battery cell assembly 140, so as to improve the vibration resistance, impact resistance and other performance of the battery cell assembly 140.

[0062] Referring again to Figures 1 and 3 to 5, for example, the reinforcing plate 110 may include a first plate 113 and a second plate 114. The second plate 114 is a bent plate member. The bent plate member includes an intermediate plate body 114a and two bent plate bodies 114b. A flow channel groove is formed on the intermediate plate body 114a and / or the first plate 113. The intermediate plate body 114a and the first plate 113 are stacked and sealed in the thickness direction to enclose a flow channel suitable for circulating fluid. The intermediate plate body 114a and the first plate 113 constitute the main body 111. The above-mentioned flow channel 110a is formed between the intermediate plate body 114a and the first plate 113. The two bent plate bodies 114b are connected to both ends of the intermediate plate body 114a. The bent plate body 114b constitutes the support connection portion 112. The reinforcing plate 110 here is formed by stacking a first plate 113 and a second plate 114 in the thickness direction, which is convenient for manufacturing and helps to improve processing accuracy.

[0063] Referring again to Figures 1 and 3 through 5, when the reinforcing plate 110 is mounted to the battery pack assembly 100, the intermediate plate portion 114a of the reinforcing plate 110 is closer to the battery cell assembly 140 than the first plate 113. The intermediate plate portion 114a is adapted to connect to the battery cell assembly 140. A flow channel 113a is formed on the surface of the first plate 113 facing the second plate 114. The second plate 114, connected to the first plate 113, closes the notch of the flow channel 113a to form the aforementioned flow channel 110a.

[0064] Referring again to Figures 1 and 3 through 5 , for example, the end of the support connector 112, distal from the main body 111, may include a first connection hole (not labeled). The first connection hole is adapted to be connected to the battery pack housing via a fastener. The main body 111 may include a second connection hole 114e. The second connection hole 114e is adapted to be connected to the battery pack housing via a fastener.

[0065] In the example shown in FIG5 , a flange 114 c is formed at the end of the support connection portion 112 . A first connection hole is formed in the flange 114 c . A rivet 114 d is installed in the first connection hole. The flange 114 c can be arranged parallel to the main body 111 .

[0066] According to the reinforcing plate 110 of the present application, when applied to the battery pack assembly 100 , it can achieve the effects of heat transfer, limiting the battery cell assembly 140 , connecting the cover body 130 , and enhancing the strength of the pack body.

[0067] Referring to Figures 1 to 5 , the present application further provides a battery pack assembly 100. The battery pack assembly 100 may include the aforementioned reinforcing plate 110. According to the battery pack assembly 100 of the present application, by applying the aforementioned reinforcing plate 110, the anti-vibration performance of the battery pack assembly 100 can be improved when vibration or other operating conditions occur.

[0068] Referring to Figures 1 and 3 to 5, in addition, the battery pack assembly 100 may further include a shell and a cell assembly 140. The shell is formed with a chamber 100a. The reinforcing plate 110 is located in the chamber 100a and is connected to the shell. A second accommodating space 100b is formed between the shell and the reinforcing plate 110. The cell assembly 140 is connected to the second accommodating space 100b. By placing the cell assembly 140 in the second accommodating space 100b enclosed by the shell and the reinforcing plate 110, the cell assembly 140 can be protected by the shell and the reinforcing plate 110, and force can be transmitted between the cell assembly 140 and the shell through the reinforcing plate 110 to improve the vibration resistance of the cell assembly 140.

[0069] The ends of the cell assemblies with poles in related technologies are weak, posing a risk of deformation and failure of the housings at both ends of the cell assembly. Because these ends lack securing and protective structures, they can severely deform during vibration. This is especially true during periods of intense vibration, when the housings at these ends are at risk of deformation and failure.

[0070] Continuing to refer to Figures 1 and 3 to 5, for example, poles are provided at opposite ends of the battery cell assembly 140 along the first direction D1. The first direction D1 is perpendicular to the height direction D3 of the battery cell assembly 140. The reinforcing plate 110 may include two supporting connection parts 112 arranged opposite to each other. The two supporting connection parts 112 are respectively connected to the two ends of the main body 111. And the two supporting connection parts 112 are located on both sides of the battery cell assembly 140 along the first direction D1. By arranging the supporting connection parts 112 on the outside of the poles of the battery cell assembly 140, it is beneficial to improve the stress at the two ends of the battery cell assembly 140 along the first direction D1 when the battery pack assembly 100 vibrates, and avoid serious deformation of the two ends of the battery cell assembly 140 along the first direction D1 during vibration, thereby preventing the risk of failure of the two ends of the battery cell assembly 140 along the first direction D1. In other words, in the battery pack assembly of the present application, the two supporting connections 112 of the reinforcing plate 110 protect the ends of the cell assembly 140 with the poles. Protected by the supporting connections 112, the ends of the cell assembly 140 with the poles are less likely to deform during vibration. Especially during severe vibration, the reinforcing plate effectively prevents failure of the ends of the cell assembly 140 with the poles due to deformation of the housing.

[0071] Referring to Figures 1 to 5 , the housing may further include a tray 120 and a cover 130. The cover 130 is connected to the tray 120 to form a chamber 100a therebetween. The cover 130 is connected to the reinforcing plate 110 to enclose the reinforcing plate 110 to form a second receiving space 100b. By connecting the reinforcing plate 110 and the cover 130, external impact forces can be effectively transmitted between the battery cell assembly 140 and the cover 130, thereby weakening the impact of external impact forces on the battery cell assembly 140 and protecting the battery cell assembly 140.

[0072] In order to achieve more effective force transmission and vibration isolation, the connection between the reinforcing plate 110 and the battery cell assembly 140 is located at a portion of the battery cell assembly 140 that is away from the cover 130 along the height direction D3.

[0073] Referring to Figures 1 and 3 to 5, for example, a flow channel 110a suitable for circulating fluid is formed inside the main body 111. The main body 111 is suitable for cooling the battery cell assembly 140. The battery pack assembly 100 may include a heat conducting portion 150. The heat conducting portion 150 is connected between the main body 111 and the battery cell assembly 140 along the height direction D3 of the battery cell assembly 140 to transfer heat between the main body 111 and the battery cell assembly 140. The heat conducting portion 150 here is used to improve the heat transfer efficiency between the main body 111 and the battery cell assembly 140.

[0074] Optionally, the heat conducting portion 150 may be pre-integrated with the reinforcing plate 110 , or may be pre-integrated with the battery cell assembly 140 .

[0075] Referring to Figures 1, 3, and 4, the battery pack assembly 100 may also include a thermal insulation member 170. The thermal insulation member 170 is connected between the tray 120 and the main body 111 of the reinforcing plate 110 along the height direction D3 of the battery cell assembly 140 to prevent heat transfer between the reinforcing plate 110 and the tray 120. The provision of the thermal insulation member 170 blocks the heat transfer path between the tray 120 and the reinforcing plate 110, thereby ensuring that the battery cell assembly 140 can maximize heat exchange with the heat exchange medium within the reinforcing plate 110, thereby effectively improving the cooling effect of the battery pack assembly 100.

[0076] For example, the heat insulating member 170 is constructed as a member made of foam. By using foam to make the heat insulating member 170, it is possible to achieve the purpose of heat insulation while improving the vibration-proof performance between the reinforcing plate 110 and the tray 120 to buffer vibration or external impact force.

[0077] Optionally, the heat insulating member 170 may be connected to the tray 120 and the reinforcing plate 110 by bonding or the like.

[0078] By adopting the above-mentioned technical means, when the foam adhesive has a weak bearing capacity or is insufficiently filled, even if the external force cannot be fully transmitted to the tray 120, the reinforcing plate 110 can still absorb some of the external force and transmit it to the cover 130. In this case, because the reinforcing plate 110 is fixed relative to the cover 130, the risk of increased localized stress in the housing due to factors such as foam adhesive failure or insufficient filling can be avoided.

[0079] Referring to Figures 1 and 3 to 5, for example, in the height direction D3 of the battery cell assembly 140, a structural adhesive layer 160 is provided between the battery cell assembly 140 and the cover 130. The structural adhesive layer 160 is constructed as a structural layer formed by curing the structural adhesive applied between the battery cell assembly 140 and the cover 130. The structural adhesive layer 160 is suitable for bonding the battery cell assembly 140 and the cover 130. By providing the structural adhesive layer 160, it is used to fix the battery cell assembly 140 to the cover 130, enhance the strength of the connection structure between the battery cell assembly 140 and the cover 130, and enable the battery cell assembly 140 to move together with the cover 130 when vibration occurs. When used in combination with the reinforcing plate 110, the vibration-proof performance of the battery cell assembly 140 can be effectively improved.

[0080] Referring to Figure 1, in addition, the battery pack assembly 100 may further include two stop members 131 arranged opposite to each other. The stop members 131 are fixedly connected to the cover body 130. And the two stop members 131 are located on both sides of the battery cell assembly 140 along the second direction D2 to prevent the battery cell assembly 140 from moving along the second direction D2, and the second direction D2 is perpendicular to the height direction D3 and the first direction D1. By providing the stop members 131, when the battery pack assembly 100 is subjected to an impact force along the second direction D2, the battery cell assembly 140 can be prevented from moving relative to the shell, but the battery cell assembly 140 can be ensured to move together with the shell under the impact force, thereby preventing the battery cell assembly 140 from being deformed or damaged due to bumps or the like.

[0081] 1 , for example, the stopping member 131 may be fastened to the second connection hole 114 e of the reinforcing plate 110 by means of fasteners such as rivets and screws.

[0082] In the illustrated example, the stopping member 131 may be constructed as a plate, a frame, or a combination of the two.

[0083] Referring to Figures 1 and 3 through 5 , for example, cover 130 can be fastened to the first connection hole of reinforcement plate 110 using fasteners such as rivets or screws. Structural adhesive can also be applied between cover 130 and reinforcement plate 110 to enhance the structural strength of the connection. After the support connection portion 112 of reinforcement plate 110 is bonded and riveted to cover 130, both reinforcement plate 110 and tray 120 share external forces, increasing the overall strength of battery pack assembly 100.

[0084] 1 , 3 and 4 , optionally, the battery cell assembly 140 may include a battery cell, which may be a blade battery cell.

[0085] According to the battery pack assembly 100 of the present application, the support connection portion 112 of the reinforcing plate 110 is connected to the cover 130, which solves the problem of excessive local stress on the liquid cooling plate in the related art due to failure of adhesion with the tray 120. In the present application, when the cover 130 and the tray 120 are made of plate parts through a stamping process, by gluing and riveting the support connection portion 112 of the reinforcing plate 110 to the cover 130, the reinforcing plate 110 and the tray 120 can be used to share the stress from the battery cell assembly 140, thereby improving the overall strength of the battery pack assembly 100 compared to the related art. The reinforcing plate 110 of the present application, by adding a bent edge as the support connection portion 112, can improve the stress at both ends of the battery cell assembly 140 when the battery pack assembly 100 vibrates, and avoid serious deformation of the two ends of the battery cell assembly 140 during vibration, thereby preventing the risk of failure at both ends of the battery cell assembly 140.

[0086] The present application also provides an electric device, which may include the battery pack assembly 100 described above.

[0087] According to the electric equipment of the present application, by applying the above-mentioned battery pack assembly 100, the safety and service life of the electric equipment can be improved.

[0088] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art in the technical field of this application. The terms used herein are only for describing specific implementation purposes and are not intended to limit this application. Terms such as "setting" appearing in this document can mean that one component is directly attached to another component, or that one component is attached to another component through an intermediate component. Features described in this document in one embodiment may be applied to another embodiment alone or in combination with other features, unless the feature is not applicable in the other embodiment or otherwise specified.

[0089] The present application has been described through the above embodiments, but it should be understood that the above embodiments are for illustrative and illustrative purposes only and are not intended to limit the present application to the described embodiments. Those skilled in the art will appreciate that many more variations and modifications may be made based on the teachings of this application, and all of these variations and modifications fall within the scope of protection claimed in this application.

Claims

1. A reinforcing plate, characterized in that: The reinforcing plate (110) comprises: a main body (111), the main body (111) being suitable for connection with a battery core assembly (140); and A support connection portion (112), one end of the support connection portion (112) is connected to an end portion of the main body portion (111) along a first direction, and the other end of the support connection portion (112) is suitable for being connected to a shell of a battery pack, wherein the first direction is a direction perpendicular to the thickness direction of the main body portion (111).

2. The reinforcing plate according to claim 1, wherein: The supporting connection portion (112) and the main body portion (111) are arranged at an angle.

3. The reinforcing plate according to claim 2, wherein: The included angle between the supporting connection portion (112) and the main body portion (111) is denoted as α, and 0<α<π, the dimension of the supporting connection portion (112) along the first direction is denoted as L, and the dimension of the supporting connection portion (112) along the thickness direction of the main body portion (111) is denoted as H, then the relationship among α, L and H satisfies 4. The reinforcing plate according to any one of claims 1 to 3, characterized in that A flow channel (110a) suitable for circulating fluid is formed inside the main body (111), and the main body (111) is suitable for cooling the battery core assembly (140).

5. The reinforcing plate according to claim 4, characterized in that The reinforcing plate further includes a heat conducting portion (150), the heat conducting portion (150) being connected to the main body portion (111), and the heat conducting portion (150) being suitable for being arranged between the main body portion (111) and the battery core assembly (140) and being closely attached to the battery core assembly (140).

6. The reinforcing plate according to claim 4 or 5, characterized in that: The reinforcing plate (110) comprises two supporting connection parts (112) arranged opposite to each other, the two supporting connection parts (112) being respectively connected to two ends of the main body (111), and a first accommodating space (110b) is formed between the two supporting connection parts (112) and the main body (111), and the first accommodating space (110b) is suitable for accommodating the battery cell assembly (140).

7. The reinforcing plate according to claim 6, wherein: The reinforcing plate (110) comprises: a first plate (113); and The second plate (114) is a bent plate member, comprising an intermediate plate body (114a) and two bent plate bodies (114b), a flow channel groove (113a) being formed on the intermediate plate body (114a) and / or the first plate (113), the intermediate plate body (114a) and the first plate (113) being stacked and sealed in a thickness direction to enclose and form the flow channel (110a) suitable for circulating fluid, the intermediate plate body (114a) and the first plate (113) constituting the main body (111), the two bent plate bodies (114b) being connected to both ends of the intermediate plate body (114a) along a first direction, and the bent plate body (114b) constituting the supporting connection portion (112).

8. The reinforcing plate according to any one of claims 1 to 7, characterized in that The end of the support connection portion (112) away from the main body portion (111) includes a first connection hole, wherein the first connection hole is suitable for connecting to the housing of the battery pack through a fastener; and / or The main body (111) includes a second connection hole (114e), and the second connection hole (114e) is suitable for being connected to the housing of the battery pack through a fastener.

9. A battery pack assembly, characterized in that: The battery pack assembly (100) comprises a reinforcement plate according to any one of claims 1 to 8.

10. The battery pack assembly according to claim 9, characterized in that: The battery pack assembly (100) further includes: a housing, the housing forming a chamber (100a), the reinforcing plate (110) being located in the chamber (100a) and connected to the housing, the housing and the reinforcing plate (110) enclosing a second accommodation space (100b); and A battery cell assembly (140), wherein the battery cell assembly (140) is connected to the second accommodating space (100b).

11. The battery pack assembly according to claim 10, characterized in that: The battery cell assembly (140) is provided with poles at two opposite ends along a first direction, wherein the first direction is perpendicular to the height direction of the battery cell assembly (140); The reinforcing plate (110) comprises two supporting connection parts (112) arranged opposite to each other, the two supporting connection parts (112) being respectively connected to two ends of the main body part (111), and the two supporting connection parts (112) being located on both sides of the battery cell assembly (140) along the first direction.

12. The battery pack assembly according to claim 11, characterized in that: The housing comprises: a tray (120); and A cover (130) is connected to the tray (120) to form the chamber (100a) between the cover (130) and the tray (120), and the cover (130) is connected to the reinforcing plate (110) to enclose the reinforcing plate (110) to form the second receiving space (100b).

13. The battery pack assembly according to any one of claims 10 to 12, characterized in that: A flow channel (110a) suitable for circulating fluid is formed inside the main body (111), and the main body (111) is suitable for cooling the battery core assembly (140); The battery pack assembly (100) includes a heat conducting portion (150), which is connected between the main body (111) and the battery cell assembly (140) along the height direction of the battery cell assembly (140) to transfer heat between the main body (111) and the battery cell assembly (140).

14. The battery pack assembly according to claim 12 or 13, characterized in that: The battery pack assembly (100) further includes a heat insulating member (170), wherein the heat insulating member (170) is connected between the tray (120) and the main body (111) of the reinforcing plate (110) along the height direction of the battery cell assembly (140) to prevent heat from being transferred between the reinforcing plate (110) and the tray (120).

15. The battery pack assembly according to claim 14, characterized in that: The heat insulating member (170) is constructed as a member made of foamed rubber.

16. The battery pack assembly according to any one of claims 12 to 15, characterized in that: In the height direction of the battery cell assembly (140), a structural adhesive layer (160) is provided between the battery cell assembly (140) and the cover body (130). The structural adhesive layer (160) is constructed as a structural layer formed by curing the structural adhesive applied between the battery cell assembly (140) and the cover body (130). The structural adhesive layer (160) is suitable for bonding the battery cell assembly (140) and the cover body (130).

17. The battery pack assembly according to any one of claims 12 to 16, characterized in that: The battery pack assembly (100) further includes two stop members (131) arranged opposite to each other, the stop members (131) being fixedly connected to the cover body (130), and the two stop members (131) being located on both sides of the battery cell assembly (140) along a second direction to prevent the battery cell assembly (140) from moving along the second direction, wherein the second direction is perpendicular to the height direction and the first direction.

18. An electrical device, characterized in that: The electrical equipment includes a battery pack assembly according to any one of claims 9 to 17.

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