Box body, battery and electric equipment

Abstract

The utility model provides a box body, a battery and electric equipment. The box body comprises a box body and a bottom protection plate. The box body comprises a first side plate and a second side plate which are oppositely arranged and extend in the first direction. The inner surface of the bottom end of the first side plate and / or the second side plate is provided with a first protruding part, and the first protruding part extends in the first direction. The bottom protection plate is arranged at the bottom of the box body and provided with a first edge and a second edge which are oppositely arranged and extend in the first direction. The first edge and / or the second edge are / is provided with second protruding parts extending in the first direction. Wherein one of the first protruding part and the second protruding part is a clamping groove, the other one of the first protruding part and the second protruding part is a clamping block, the end, in the first direction, of the clamping groove is an open end, and the clamping block is inserted into the clamping groove from the open end in the first direction.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a box, a battery and an electrical device. Background Art

[0002] The battery may include a battery cell and a box; the battery cell is installed in the box. The box is used to carry and protect the battery cell in the box. However, the battery application environment is complex, so the structural strength of the box and its service life are particularly important to the safety of the battery. How to improve the structural strength of the box is an urgent problem to be solved. Utility Model Content

[0003] The main technical problem solved by the present application is to provide a box, a battery and an electrical device to improve the structural strength of the box.

[0004] In order to solve the above technical problems, the first technical solution adopted by the present application is: to provide a box. The box includes a box body and a bottom guard plate, and the box body includes a first side plate and a second side plate that are oppositely arranged and extend along a first direction; the inner surface of the bottom end of the first side plate and / or the second side plate has a first protrusion, and the first protrusion extends along the first direction. The bottom guard plate is arranged at the bottom of the box body, and has a first side and a second side that are oppositely arranged and extend along the first direction; the first side and / or the second side has a second protrusion extending along the first direction. Among them, one of the first protrusion and the second protrusion is a card slot, and the other is a card block, and one end of the card slot along the first direction is an open end, and the card block is inserted into the card slot from the open end along the first direction.

[0005] In this way, the first protrusion or the second protrusion is connected to the inner surface of the first side plate and / or the second side plate. At the first protrusion or the second protrusion, the strength of the box body is not reduced; and the first protrusion and the second protrusion can be used to install the bottom guard plate at the bottom of the box body. This solves the problem of reduced strength at the groove of the box in the related art, thereby improving the structural strength of the box.

[0006] In some embodiments, the box body further includes a third side plate and a fourth side plate that are arranged opposite to each other and extend along the second direction; the first direction intersects the second direction; the bottom end of the first side plate and the bottom end of the second side plate both protrude from the bottom end of the third side plate to form a first protruding end; the inner surface of the first protruding end of the first side plate and the inner surface of the first protruding end of the second side plate both have a first protruding portion; the first side and the second side both have a second protruding portion. In this way, by using two first protruding portions and two second protruding portions, the bottom guard plate can be arranged on the first protruding end.

[0007] In some embodiments, the top surface of the first protrusion has a slot, and the end of the slot close to the third side plate is an open end; the edge of the first side and the edge of the second side are both used as a clamping block, and the edge of the first side and the edge of the second side are respectively inserted into the corresponding slot. In this way, the bottom guard plate is located between the first protrusions to reduce the area of ​​the bottom guard plate, making the bottom guard plate lighter.

[0008] In some embodiments, the top surface of the slot has a first limiting protrusion, the top surfaces of the edge of the first side and the edge of the second side both have second limiting protrusions, and the first limiting protrusion and the second limiting protrusion cooperate to limit the bottom guard plate from falling off from the slot in the second direction. In this way, when the bottom guard plate is greatly deformed, the cooperation of the first limiting protrusion and the second limiting protrusion can prevent the bottom guard plate from sliding out of the slot in the second direction.

[0009] In some embodiments, the top and bottom surfaces of the card slot both have first limiting protrusions, and the top and bottom surfaces of the edge of the first side and the edge of the second side both have second limiting protrusions. In this way, the two second limiting protrusions and the part of the bottom guard plate between the two second limiting protrusions constitute a card block, and the two first limiting protrusions of the card block respectively prevent the two second limiting protrusions from moving along the second direction, so that the card slot and the card block are more stably connected.

[0010] In some embodiments, the other end of the card slot along the first direction is a closed end; when the card block contacts the closed end, along the first direction, the two outer surfaces of the bottom guard plate are flush with the outer surfaces of the third side plate and the outer surfaces of the fourth side plate. In this way, the closed end can be used as a position for installing the bottom guard plate, thereby facilitating the installation of the bottom guard plate.

[0011] In some embodiments, adhesive is provided in the card slot, and the card block is fixed in the card slot by the adhesive. In this way, after the card block is connected to the card slot, the adhesive plays a role of bonding the card slot and the card block, which can prevent the card block from sliding relative to the card slot.

[0012] In some embodiments, the bottom end of the first side panel and the bottom end of the second side panel also protrude from the bottom end of the fourth side panel; one end of the bottom guard panel close to the third side panel is fixed to the bottom end of the third side panel by screws, rivets or welding, and one end of the bottom guard panel close to the fourth side panel is fixed to the bottom end of the fourth side panel by screws, rivets or welding. In this way, the bottom guard panel is fixedly connected to the bottom ends of the third side panel and the fourth side panel, thereby preventing the card block from sliding relative to the card slot, so that the bottom guard panel can be installed more stably on the bottom of the box body.

[0013] In some embodiments, the box body further includes a bottom plate, the bottom plate is connected to the bottom of the box body; the first protruding end also protrudes from the bottom plate; and the bottom guard plate is arranged on the outer side of the bottom plate. The inner surface of the bottom guard plate is at least partially in contact with the outer surface of the bottom plate. In this way, the bottom plate can be used to place the battery cells, and the bottom guard plate is used to protect the battery cells.

[0014] In order to solve the above technical problems, the second technical solution provided by the present application is: to provide a battery. The battery includes a battery cell and a box; the battery cell is arranged in the box. Since the battery includes the above box, the battery has the same effect as the above box.

[0015] In order to solve the above technical problems, the third technical solution provided by the present application is: to provide an electric device. The electric device includes an electric device and a battery, and the battery is electrically connected to the electric device. Since the electric device includes the above-mentioned box, the electric device has the same effect as the above-mentioned box. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a structural schematic diagram of the electrical equipment provided by this application;

[0018] Figure 2 It is a schematic diagram of the structure of the battery provided by this application;

[0019] Figure 3 It is a structural schematic diagram of the box provided by this application;

[0020] Figure 4 is an exploded view of the box provided by this application;

[0021] Figure 5 It is the front view of the box provided by this application;

[0022] Figure 6 yes Figure 5 The enlarged view of P in the middle;

[0023] Figure 7 is a rear view of the box provided by the present application;

[0024] Figure 8 and Fig. 9 is a side view of the box provided by the present application;

[0025] Fig.10 and Fig.11 yes Figure 5 Sectional view along line AA in the figure.

[0026] In the figure: 1. battery; 11. box body; 111. cover plate; 112. box body; 1121. first side plate; 1122. second side plate; 1123. third side plate; 1124. fourth side plate; 1125. first protrusion; 1126. first limiting protrusion; 1127. first protruding end; 1128. open end; 113. bottom guard plate; 1131. first side; 1132. second side; 1133. second protrusion; 1134. second limiting protrusion; 114. bottom plate; 12. battery cell; 2. electrical device. DETAILED DESCRIPTION

[0027] The scheme of the embodiment of the present application is described in detail below in conjunction with the drawings of the specification.

[0028] In the following description, for the purpose of explanation rather than limitation, specific details such as specific system structures, interfaces, and technologies are provided to facilitate a thorough understanding of the present application.

[0029] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0030] The terms "first", "second", "third" in this application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first", "second", "third" can expressly or implicitly include at least one of the features. In the description of this application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In the embodiments of this application, all directional indications (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the steps or units listed, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0031] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0032] In the related art, a battery may include a battery cell and a box; the battery cell is installed in the box. A bottom guard plate is provided at the bottom of the box to protect the battery cell in the box. A pair of opposite grooves are provided on the inner surface of the current box (i.e., a portion is removed from the inner surface of the box to form the grooves), and the opposite sides of the bottom guard plate are respectively inserted into the pair of grooves to achieve the connection between the box and the bottom guard plate. However, the grooves provided on the inner surface of the box will reduce the strength of the portion of the box where the grooves are provided, thereby affecting the service life of the box and further affecting the battery life.

[0033] In order to improve the structural strength of the box body, for example, to solve the problem of reduced strength of the part where the groove is opened in the box body. An embodiment of the present disclosure provides a box body, which may include a box body and a bottom guard plate; the box body may include a first side panel and a second side panel opposite to each other. The inner surface of the bottom end of the first side panel and / or the second side panel has a first protrusion, and the first protrusion extends along the first direction. The bottom guard plate is arranged at the bottom of the box body, and has a first side and a second side arranged opposite to each other; the first side and / or the second side has a second protrusion extending along the first direction. One of the first protrusion and the second protrusion is a card slot, and the other is a card block, and one end of the card slot along the first direction is an open end, and the card block is inserted into the card slot from the open end along the first direction.

[0034] In this way, the first protrusion or the second protrusion is connected to the inner surface of the first side plate and / or the second side plate. At the first protrusion or the second protrusion, the strength of the box body is not reduced; and the first protrusion and the second protrusion can be used to install the bottom guard plate at the bottom of the box body. This solves the problem of reduced strength at the part where the groove is opened in the box body in the related art.

[0035] The box can be applied to the battery field, that is, the box and, for example, a battery cell are used to form a battery. The battery can be applied to electrical equipment. The principle of the box can also be applied to other fields, for example, the box can be an office cabinet, etc. The following description takes the application of the box in the battery field as an example.

[0036] The electrical equipment can be a vehicle, a mobile phone, a portable device, a laptop computer, a ship, a spacecraft, an electric toy, an electric tool, etc. The vehicle can be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. Spacecraft include airplanes, rockets, space shuttles and spacecrafts, etc. Electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys and electric airplane toys, etc.; electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools and railway electric tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators and electric planers, etc. For the convenience of explanation, the following embodiments are described by taking the electrical equipment as a vehicle as an example.

[0037] See also Figure 1 The electric device may include an electric device 2 and a battery 1, wherein the battery 1 is electrically connected to the electric device 2 so that the battery 1 provides electric energy to the electric device 2.

[0038] The power-consuming device 2 may be a component or device that can consume electricity; for example, the power-consuming device 2 may be a controller. The controller may be a central processing unit (CPU), a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. For another example, the power-consuming device 2 may be an electronic component.

[0039] In electrical equipment, Figure 1 In the case of the vehicle shown, the electrical device 2 may be a lamp (eg, headlight, taillight, etc.), a display screen, an instrument panel, a control system (eg, a controller), etc. in the vehicle.

[0040] In some examples, the electric device may further include other parts. For example, when the electric device is a vehicle, the other parts may be the body of the vehicle, for example, the battery 1 and the electric device 2 are both installed on the body.

[0041] The battery 1 is used to provide electric energy to the electric device 2 so that the electric device 2 can work. Figure 2 The battery 1 may include a battery cell 12 and a box body 11 ; the battery cell 12 is disposed in the box body 11 .

[0042] In the battery 1, the number of battery cells 12 can be one or more. Among them, multiple battery cells 12 can be connected in series, in parallel, or in mixed connection. Mixed connection means that multiple battery cells 12 are both connected in series and in parallel. Multiple battery cells 12 can be directly connected in series, in parallel, or in mixed connection, and then the whole formed by multiple battery cells 12 is accommodated in the box. Of course, it is also possible that multiple battery cells 12 are first connected in series, in parallel, or in mixed connection to form a battery 1 module, and then multiple battery 1 modules are connected in series, in parallel, or in mixed connection to form a whole, and the whole is accommodated in the box. Multiple battery cells 12 in the battery 1 module can be electrically connected through a busbar component to achieve, for example, parallel connection, series connection, or mixed connection of multiple battery cells 12 in the battery 1 module.

[0043] The box 11 is used to provide a storage space for one or more battery cells 12, so that the box 11 can protect the battery cells 12; and it is also convenient to gather multiple battery cells 12 together. The shape of the box 11 can be specifically set as needed. For example, the shape of the box 11 can be cylindrical, and the corresponding battery 1 can be called a round battery 1; for another example, the shape of the box 11 can be rectangular, and the corresponding battery 1 can be called a rectangular battery 1.

[0044] See also Figure 2 to Figure 11 The box body 11 may include a box body 112 and a bottom guard plate 113. The box body 112 may include a first side plate 1121 and a second side plate 1122 that are arranged opposite to each other and extend along the first direction Y; the inner surface of the bottom end of the first side plate 1121 and / or the second side plate 1122 has a first protrusion 1125, and the first protrusion 1125 extends along the first direction Y. The bottom guard plate 113 is arranged at the bottom of the box body 112, and has a first side 1131 and a second side 1132 that are arranged opposite to each other and extend along the first direction Y; the first side 1131 and / or the second side 1132 has a second protrusion 1133 that extends along the first direction Y. Among them, one of the first protrusion 1125 and the second protrusion 1133 is a card slot, and the other is a card block, and one end of the card slot along the first direction Y is an open end 1128, and the card block is inserted into the card slot along the first direction Y from the open end 1128.

[0045] In this way, the first protrusion 1125 or the second protrusion 1133 is connected to the inner surface of the first side plate 1121 and / or the second side plate 1122. The strength of the box body 112 is not reduced at the first protrusion 1125 or the second protrusion 1133; and the bottom guard plate 113 can be installed at the bottom of the box body 112 by using the first protrusion 1125 or the second protrusion 1133. This solves the problem of reduced strength at the part where the groove is opened in the box body in the related art.

[0046] The box body 112 may include a plurality of (e.g., three, four, five, six, etc.) side panels. The number of side panels is related to the shape of the box body 112. For example, the box body 112 may include four side panels (the four side panels may be referred to as the first side panel 1121, the third side panel 1123, the second side panel 1122, and the fourth side panel 1124 in sequence), so that the first side panel 1121, the third side panel 1123, the second side panel 1122, and the fourth side panel 1124 are sequentially connected to form a rectangular box body 112. For example, the box body 112 may be an annular box body, or a box body of other shapes.

[0047] The bottom guard plate 113 is disposed at the bottom of the box body 112. In this way, when the bottom of the box body 112 is expanded, the bottom guard plate 113 can protect the battery monomer 12 to reduce the leakage of the battery monomer 12.

[0048] The bottom of the box body 112 can be understood as the part of the box body 112 that is opposite to the bottom of the battery cell 12 when the battery cell 12 is installed in the box body 112, which can be called the bottom of the box body 112. Correspondingly, the top of the box body 112 can be the part that is opposite to the wiring pole of the battery cell 12. For example, when the bottom of the box body 112 is placed on the ground or a work surface, the bottom of the box body 112 can be called the lower part, and the top of the box body 112 can be called the upper part. For another example, when the side panel of the box body 112 is placed on the ground or a work surface, the bottom of the box body 112 can be called the left part (or the front part), and the top of the box body 112 can be called the right part (or the rear part). Then, the bottom surface that appears in this article is located on the same side as the bottom of the box body 112, and the top surface that appears is located on the other side of the top of the box body 112; no further details will be given. Compared with the inner surface and the outer surface herein, the inner surface is closer to the center of the box body 112 than the outer surface.

[0049] In the embodiments of the present disclosure, a first direction Y, a second direction X, and a third direction Z are introduced. The first direction Y intersects with the second direction X (e.g., perpendicularly), and intersects with the third direction Z (e.g., perpendicularly); the second direction X intersects with the third direction Z (e.g., perpendicularly). When the first direction Y is perpendicular to the second direction X, and perpendicular to the third direction Z; and the second direction X is perpendicular to the third direction Z, the first direction Y, the second direction X, and the third direction Z can constitute a three-dimensional coordinate system. For ease of description, this article takes the example that the first direction Y, the second direction X, and the third direction Z can constitute a three-dimensional coordinate system.

[0050] The box body 112 may include a first side plate 1121 and a second side plate 1122 that are arranged opposite to each other and extend along a first direction Y. It can be understood that the plate surface of the first side plate 1121 and the plate surface of the second side plate 1122 extend along the first direction Y, and the plate surface of the first side plate 1121 and the plate surface of the second side plate 1122 are arranged opposite to each other along a second direction X.

[0051] The bottom guard plate 113 has a first side 1131 and a second side 1132 which are arranged opposite to each other and extend along the first direction Y. It can be understood that the bottom guard plate 113 has a first side 1131 and a second side 1132 which are arranged opposite to each other along the second direction X and the extending direction of the first side 1131 and the second side 1132 is the first direction Y.

[0052] For example, the first side 1131 of the bottom guard plate 113 is opposite to (or opposite to) the first side plate 1121, and the second side 1132 is opposite to (or opposite to) the second side plate 1122. For another example, the first side 1131 is opposite to the second side plate 1122, and the second side 1132 is opposite to the first side plate 1121. Herein, the first side 1131 is opposite to the first side plate 1121, and the second side 1132 is opposite to the second side plate 1122.

[0053] The inner surface of the bottom end of the first side plate 1121 and / or the second side plate 1122 has a first protrusion 1125. For example, the inner surface of the bottom end of the first side plate 1121 or the second side plate 1122 has a first protrusion 1125. For another example, the inner surface of the bottom end of the first side plate 1121 and the second side plate 1122 both have a first protrusion 1125. The first side 1131 and / or the second side 1132 has a second protrusion 1133 extending along the first direction Y. For example, the first side 1131 or the second side 1132 has a second protrusion 1133 extending along the first direction Y. For another example, the first side 1131 and the second side 1132 both have a second protrusion 1133 extending along the first direction Y.

[0054] For ease of description, a first protrusion 1125 and a second protrusion 1133 may be referred to as a snap-fit ​​mechanism, that is, the snap-fit ​​mechanism includes a first protrusion 1125 and a second protrusion 1133 that cooperate with each other. When there are two first protrusions 1125 and two second protrusions 1133, there are two snap-fit ​​mechanisms.

[0055] In some examples, the inner surface of the bottom end of the first side panel 1121 (or the second side panel 1122) has a first protrusion 1125, and the first edge 1131 (or the second edge 1132) has a second protrusion 1133 extending along the first direction Y. In this way, a snap-fit ​​mechanism is used to set the bottom guard plate 113 at the bottom of the box body 112. Among them, the connection method between the second edge 1132 (or the first edge 1131) and the second side panel 1122 (or the first side panel 1121) can adopt any connection method that does not reduce the strength of the second side panel 1122 (or the first side panel 1121). For example, the second edge 1132 (or the first edge 1131) and the second side panel 1122 (or the first side panel 1121) can be connected by abutment, gluing, etc.

[0056] In other examples, the inner surfaces of the bottom ends of the first side plate 1121 and the second side plate 1122 each have a first protrusion 1125, and the first side 1131 and the second side 1132 each have a second protrusion 1133 extending along the first direction Y. In this way, the bottom guard plate 113 is disposed at the bottom of the box body 112 by using two snap-fit ​​mechanisms.

[0057] One of the first protrusion 1125 and the second protrusion 1133 is a slot, and the other is a block. It can be understood that one of the first protrusion 1125 and the second protrusion 1133 has a slot, and the other is a block; and the extending direction of the slot is the first direction. For example, the first protrusion 1125 has a slot extending along the first direction, and the second protrusion 1133 is a block. For another example, the second protrusion 1133 has a slot extending along the first direction, and the first protrusion 1125 is a block. In this article, Figure 4 The first protrusion 1125 is shown as a slot, and the second protrusion 1133 is shown as a block for illustration.

[0058] One end of the card slot along the first direction Y is an open end 1128 ; the card block is inserted into the card slot from the open end 1128 along the first direction Y. In this way, the open end 1128 is provided to facilitate the card block to be inserted into the card slot, so that the bottom guard plate 113 is arranged at the bottom of the box body 112 .

[0059] In some embodiments, see Figure 8The box body 112 further includes a third side plate 1123 and a fourth side plate 1124 which are arranged opposite to each other and extend along the second direction X; the first direction Y intersects with the second direction X; the bottom end of the first side plate 1121 and the bottom end of the second side plate 1122 both protrude from the bottom end of the third side plate 1123 to form a first protruding end 1127; the inner surface of the first protruding end 1127 of the first side plate 1121 and the inner surface of the first protruding end 1127 of the second side plate 1122 both have a first protruding portion 1125; the first side 1131 and the second side 1132 both have a second protruding portion 1133. In this way, by using two first protruding portions 1125 and two second protruding portions 1133, the bottom guard plate 113 can be arranged on the first protruding end 1127.

[0060] In some embodiments, see Figure 5 and Figure 6 , the side of the first protrusion 1125 has a slot, and the end of the slot close to the third side plate 1123 is an open end 1128; the edge of the first side 1131 and the edge of the second side 1132 are both used as blocks, and the edge of the first side 1131 and the edge of the second side 1132 are respectively inserted into the corresponding slots. In this way, the bottom guard plate is located between the first protrusions 1125 to reduce the area of ​​the bottom guard plate and make the bottom guard plate lighter. In other embodiments, the top surface of the first protrusion 1125 has a slot. In other embodiments, the bottom surface of the first protrusion 1125 has a slot.

[0061] In some embodiments, see Figure 8 The top surface of the card slot has a first limiting protrusion 1126, and the top surfaces of the edge of the first side 1131 and the edge of the second side 1132 have second limiting protrusions 1134. The first limiting protrusion 1126 and the second limiting protrusion 1134 cooperate to limit the bottom guard plate 113 from falling off from the card slot along the second direction X. In this way, when the bottom guard plate 113 is greatly deformed, the cooperation of the first limiting protrusion 1126 and the second limiting protrusion 1134 can prevent the bottom guard plate 113 from sliding out of the card slot along the second direction X. In addition, the weight of the card slot and the card block can be reduced.

[0062] In some embodiments, see Fig.10, the top and bottom surfaces of the card slot both have a first limiting protrusion 1126, and the top and bottom surfaces of the edge of the first side 1131 and the edge of the second side 1132 both have a second limiting protrusion 1134. In this way, the two second limiting protrusions 1134 and the part of the bottom guard plate 113 between the two second limiting protrusions 1134 constitute a card block, and the two first limiting protrusions 1126 of the card block respectively hinder the two second limiting protrusions 1134 from moving along the second direction, so that the card slot and the card block are more stably connected. In other embodiments, the top and bottom surfaces of the card slot both have a first limiting protrusion 1126, and the edge of the first side 1131 and the side surface of the edge of the second side 1132 both have a second limiting protrusion 1134. In this way, the two second limiting protrusions 1134 constitute a card block.

[0063] For some examples, see Figure 5 and Figure 6 The other end of the card slot along the first direction Y contacts the inner surface of the fourth side plate 1124; there is a gap between the open end and the inner surface of the third side plate 1123. The gap facilitates the insertion of the card block formed by the two second limiting protrusions 1134 into the card slot.

[0064] In some embodiments, the other end of the card slot along the first direction Y is a closed end; when the card block contacts the closed end, the two outer surfaces of the bottom guard plate 113 are flush with the outer surfaces of the third side plate 1123 and the outer surfaces of the fourth side plate 1124 along the first direction Y. In this way, the provided closed end can be used as a position for installing the bottom guard plate 113, thereby facilitating the installation of the bottom guard plate 113. In other embodiments, the other end of the card slot along the first direction is also an open end.

[0065] In some embodiments, adhesive is provided in the card slot, and the card block is fixed in the card slot by the adhesive. In this way, after the card block is connected to the card slot, the adhesive plays a role in bonding the card slot and the card block, and can prevent the card block from sliding relative to the card slot. In some examples, an adhesive layer is coated in the card slot, and after the card block is connected to the card slot, the adhesive layer makes the card block and the card slot bonded. The material that is conducive to adhesive bonding can be resin glue, glue, etc. For example, after the card block is connected to the card slot, the liquid glue solidifies and then bonds the card block and the card slot.

[0066] In some embodiments, see Figure 7, the bottom end of the first side plate 1121 and the bottom end of the second side plate 1122 also protrude from the bottom end of the fourth side plate 1124; one end of the bottom guard plate 113 close to the third side plate 1123 is fixed to the bottom end of the third side plate 1123 by screws, riveting or welding, and one end of the bottom guard plate 113 close to the fourth side plate 1124 is fixed to the bottom end of the fourth side plate 1124 by screws, riveting or welding. In this way, the bottom guard plate 113 is fixedly connected to the bottom ends of the third side plate 1123 and the fourth side plate 1124, thereby preventing the card block from sliding relative to the card slot, so that the bottom guard plate 113 can be installed at the bottom of the box body 112 more stably.

[0067] In other embodiments, the bottom end of the fourth side plate 1124 also protrudes from the bottom end of the third side plate 1123 to form a second protruding end, and the inner surface of the second protruding end has a slot, and the end of the bottom guard plate 113 close to the fourth side plate 1124 is inserted into the slot; the end of the bottom guard plate 113 close to the third side plate 1123 is fixed to the bottom end of the third side plate 1123 by screws, riveting or welding. In this way, the movement of the card block and the card slot is restricted by the cooperation between the bottom guard plate 113 and the slot; and the bottom end of the fourth side plate 1124 is fixedly connected to the bottom guard plate 113, so that the bottom guard plate 113 can be installed on the bottom of the box body 112 more stably.

[0068] In some embodiments, see Fig. 9 and Fig.11 The box body 11 further includes a bottom plate 114, which is connected to the bottom of the box body 112 (for example, fixedly connected or detachably connected); the first protruding end 1127 also protrudes from the bottom plate 114; and the bottom guard plate 113 is arranged on the outer side of the bottom plate 114. The inner surface of the bottom guard plate 113 is at least partially in contact with the outer surface of the bottom plate 114. In this way, the bottom plate 114 can be used to place the battery cell 12, and the bottom guard plate 113 is used to protect the battery cell.

[0069] For some examples, see Fig. 9 , the inner surface of the bottom guard plate 113 is integrally fitted with the outer surface of the bottom plate 114, so that the bottom guard plate 113 can play a protective role. In other examples, see Fig.11 The inner surface of the bottom guard plate 113 is partially in contact with the outer surface of the bottom plate 114, and the other part is spaced apart to form a flow channel. Cooling liquid can be injected into the flow channel to cool the battery cell 12; and the bottom guard plate 113 can also play a protective role.

[0070] In some embodiments, the box body 11 further includes a cover plate 111, the top of the box body 112 has a first opening, and the cover plate 111 is covered on the top of the box body 112. In this way, the cover plate 111 is opened, and the battery cell 12 is placed in the box body 112 through the first opening. At this time, the box body 112 can be called a lower box body. In some examples, when the box body 11 is installed on a car, the lower box body is arranged on the car, and the cover plate 111 is arranged on the side of the lower box body away from the car.

[0071] In some embodiments, the bottom of the box body 112 is a second opening, and the top of the box body 112 is a closed portion. In this way, the battery cell and the like are installed in the box body 112 using the second opening, and then the bottom guard plate 113 is used to seal the second opening and the battery cell and the like to complete the battery assembly.

[0072] The above description is only an implementation method of the present application, and does not limit the patent protection scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A box, characterized in that: include: The box body comprises a first side plate and a second side plate which are arranged opposite to each other and extend along a first direction; the inner surface of the bottom end of the first side plate and / or the second side plate has a first protrusion, and the first protrusion extends along the first direction; A bottom guard plate is arranged at the bottom of the box body, and has a first side and a second side which are arranged opposite to each other and extend along the first direction; the first side and / or the second side has a second protrusion extending along the first direction; Among them, one of the first protrusion and the second protrusion is a slot, and the other is a block, one end of the slot along the first direction is an open end, and the block is inserted into the slot from the open end along the first direction.

2. The box according to claim 1, characterized in that: The box body also includes a third side panel and a fourth side panel which are arranged opposite to each other and extend along a second direction; the first direction intersects with the second direction; the bottom end of the first side panel and the bottom end of the second side panel both protrude from the bottom end of the third side panel to form a first protruding end; the inner surface of the first protruding end of the first side panel and the inner surface of the first protruding end of the second side panel both have the first protruding portion; the first edge and the second edge both have the second protruding portion.

3. The box according to claim 2, characterized in that: The top surface of the first protrusion has the card slot, and the end of the card slot close to the third side plate is the open end; the edge of the first side and the edge of the second side both serve as the card blocks, and the edge of the first side and the edge of the second side are respectively inserted into the corresponding card slots.

4. The box according to claim 3, characterized in that: The top surface of the slot has a first limiting protrusion, and the top surfaces of the edge of the first side and the edge of the second side both have a second limiting protrusion, and the first limiting protrusion and the second limiting protrusion cooperate to limit the bottom guard plate from falling off from the slot along the second direction.

5. The box according to claim 4, characterized in that: The top surface and the bottom surface of the card slot both have the first limiting protrusion, and the top surface and the bottom surface of the edge of the first side and the edge of the second side both have the second limiting protrusion.

6. The box according to claim 3, characterized in that: The other end of the card slot along the first direction is a closed end; when the card block contacts the closed end, along the first direction, the two outer surfaces of the bottom guard plate are flush with the outer surfaces of the third side plate and the outer surfaces of the fourth side plate respectively.

7. The box according to any one of claims 1 to 6, characterized in that: Adhesive is arranged in the card slot, and the card block is fixed in the card slot by the adhesive.

8. The box according to any one of claims 2 to 6, characterized in that: The bottom ends of the first side panel and the second side panel also protrude beyond the bottom end of the fourth side panel; one end of the bottom guard plate close to the third side panel is fixed to the bottom end of the third side panel by means of screws, rivets or welding, and one end of the bottom guard plate close to the fourth side panel is fixed to the bottom end of the fourth side panel by means of screws, rivets or welding.

9. The box according to any one of claims 1 to 6, characterized in that: The box also includes: A bottom plate connected to the bottom of the box body; the first protruding end also protrudes from the bottom plate; the bottom guard plate is arranged on the outer side of the bottom plate; Wherein, the inner surface of the bottom guard plate is at least partially in contact with the outer surface of the bottom plate.

10. A battery, characterized in that: include: A battery cell and a box as claimed in any one of claims 1 to 9; the battery cell is arranged in the box.

11. An electrical device, characterized in that: include: An electric device and a battery as claimed in claim 10, wherein the battery is electrically connected to the electric device.

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