Battery box and battery

Abstract

The battery box comprises a box body and a plurality of bottom reinforcing pieces, the box body is provided with a bottom plate and a side surrounding plate, the side surrounding plate is formed on the periphery of the bottom plate and extends upwards to form a containing space, the plurality of bottom reinforcing pieces are arranged in the containing space, each bottom reinforcing piece is provided with a first bent part and a second bent part, and the first bent part and the second bent part are arranged in the containing space. The first bending part is connected with the bottom plate, and the second bending part is connected with the side coaming. When the battery box is used for bearing the components in the accommodating space, the deformation quantity of the box body is reduced, and the safety of the battery is improved.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a battery box and a battery. Background Technology

[0002] With the popularization of new energy technologies, new energy operation machinery is receiving increasing attention from manufacturers and the market. Existing technology has developed a battery comprising a housing and battery modules housed within it. As the pursuit of higher endurance continues, the number of battery modules is increasing, and the housing also requires comprehensive cooling, display, and detection devices. This makes the components within the housing increasingly heavy, placing higher demands on the housing's load-bearing capacity.

[0003] The existing battery casing is made of sheet metal, and the connection between the bottom plate and the side plate of the casing is weak. It will deform after being subjected to pressure for a long time, which will affect the safety of the battery. Utility Model Content

[0004] This application provides a battery box and a battery. When carrying components within the storage space, the battery box reduces the deformation of the box body and improves the safety of the battery.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] In a first aspect, this application provides a battery box, comprising: a box body having a bottom plate and a side plate, the side plate being formed around the periphery of the bottom plate and extending upward to form an accommodating space; and a plurality of bottom reinforcing members disposed in the accommodating space, each bottom reinforcing member having a first bent portion and a second bent portion, the first bent portion being connected to the bottom plate and the second bent portion being connected to the side plate.

[0007] As an optional implementation, the base plate is generally square; there are four bottom reinforcing members; two of them are first bottom reinforcing members, which are located on both sides of the width direction of the base plate, and each first bottom reinforcing member extends along the length direction of the base plate; the two bottom reinforcing members are second bottom reinforcing members, which are located on both sides of the length direction of the base plate, and each second bottom reinforcing member extends along the width direction of the base plate.

[0008] As an optional implementation, the battery box further includes: a plurality of intermediate reinforcing beams disposed in the receiving space, the plurality of intermediate reinforcing beams being spaced apart along the length direction of the bottom plate, and each intermediate reinforcing beam being disposed along the width direction of the bottom plate, with each intermediate reinforcing beam having its two ends connected to two first bottom reinforcing members respectively.

[0009] As an optional implementation, each intermediate reinforcing beam includes: a main plate, the length of which is disposed along the width of the base plate; two intermediate plates, which are respectively formed on both sides of the main plate in the width direction and bend downward; and two connecting plates, which are respectively formed at the ends of the two intermediate plates and extend in a direction away from the main plate; wherein each connecting plate is attached to a first bent portion of the first bottom reinforcing member; the main plate is fixedly connected to the first bent portion of the first bottom reinforcing member; or, each connecting plate is fixedly connected to the first bottom reinforcing member.

[0010] As an optional implementation, the battery box also includes a water-cooled plate, which is disposed in the receiving space and laid on multiple intermediate reinforcing beams; and the bottom wall of the water-cooled plate is designed to conform to the shape of the main body plate.

[0011] As an optional implementation, the battery box further includes: a water-cooled plate disposed in the receiving space; and two positioning beams disposed on both sides of the water-cooled plate, and each positioning beam being fixed to the base plate or bottom reinforcement to position the water-cooled plate.

[0012] As an optional implementation, the first bend is designed to conform to the shape of the base plate; and / or, the second bend is designed to conform to the shape of the side panel.

[0013] As an optional implementation, the enclosure has an inwardly folded edge extending inward from the top of the side panel; the battery box also includes: a plurality of top reinforcement members disposed at the connection between the inwardly folded edge and the side panel, and each top reinforcement member having a third bend and a fourth bend, the third bend being connected to the inwardly folded edge and the fourth bend being connected to the side panel.

[0014] As an optional implementation, the enclosure has an inwardly flanged edge extending inward from the top of the side panel; a plurality of first through holes are provided on the bottom plate; a plurality of second through holes are provided on the inwardly flanged edge, and the plurality of second through holes correspond one-to-one with the plurality of first through holes in the vertical direction; the battery box also includes: a plurality of sleeves, the plurality of sleeves being disposed in the receiving space, and the plurality of sleeves, the plurality of first through holes and the plurality of second through holes corresponding one-to-one, the lower end of each sleeve being directly opposite the first through hole, and the upper end of each sleeve being directly opposite the second through hole.

[0015] Secondly, this application also provides a battery, including the battery case of any of the above.

[0016] The battery box provided in this application has a first bend connected to the base plate and a second bend connected to the side panel. In this way, each bottom reinforcement can be pulled by its own strength, so that the base plate and the side panel can maintain their original design shape. When carrying the components in the storage space, the deformation of the box is reduced and the safety of the battery is improved. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the battery box in one embodiment of this application;

[0019] Figure 2 This is an exploded view of the battery box in one embodiment of this application;

[0020] Figure 3 This is a top view of the battery box in one embodiment of this application;

[0021] Figure 4 For along Figure 3 Cross-sectional view obtained by cutting along section line AA;

[0022] Figure 5 for Figure 4 Enlarged view of part B;

[0023] Figure 6 for Figure 4 Enlarged view of part C;

[0024] Figure 7 for Figure 4 Enlarged view of part D;

[0025] Figure 8 This is a schematic diagram of the bottom reinforcement in a battery box according to one embodiment of this application;

[0026] Figure 9 This is a schematic diagram of the central reinforcement member in a battery box according to an embodiment of this application;

[0027] Figure 10 This is a schematic diagram of the top reinforcement in a battery box according to one embodiment of this application;

[0028] Figure 11 This is a schematic diagram of a positioning beam in a battery box according to one embodiment of this application;

[0029] Figure 12 This is a schematic diagram of a battery pack in one embodiment of this application.

[0030] Explanation of reference numerals in the attached figures:

[0031] 100. Battery box; 110. Box body; 111. Accommodation space; 112. Base plate; 112a. First perforation; 114. Side panel; 116. Inner flange; 116a. Second perforation; 120. Bottom reinforcement; 122. First bend; 124. Second bend; 126. First bottom reinforcement; 128. Second bottom reinforcement; 130. Intermediate reinforcing beam; 132. Main body plate; 13 4. Intermediate plate; 136. Connecting plate; 140. Water-cooled plate; 142. Extension; 144. Flow cavity; 146. Bottom wall; 150. Positioning beam; 152. Protrusion; 154. Fixing part; 160. Top reinforcement; 162. Third bend; 164. Fourth bend; 166. First top reinforcement; 168. Second top reinforcement; 170. Sleeve; 10. Battery; 1. Battery pack. Detailed Implementation

[0032] Existing technology has developed a battery comprising a casing and battery modules housed within it. With the continuous pursuit of higher battery life, the number of battery modules has increased, and the casing also requires comprehensive cooling, display, and detection devices. This makes the components within the casing increasingly heavy, placing higher demands on the casing's load-bearing capacity. However, the casing is made of sheet metal, resulting in weak connections between the bottom and side panels. Under prolonged pressure, deformation can occur, affecting battery safety.

[0033] To overcome the deficiencies in the prior art, this application provides a battery box in which the first bend of each bottom reinforcement is connected to the bottom plate and the second bend is connected to the side plate. In this way, each bottom reinforcement can be pulled by its own strength, so that the bottom plate and the side plate can maintain their original design shape. When carrying the components in the storage space, the deformation of the box is reduced and the safety of the battery is improved.

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the following will be combined with the embodiments of this application. Figures 1 to 12 The technical solutions in the embodiments of this application are clearly and completely described. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0035] This application provides a battery box 100, which generally includes a box body 110. The box body 110 has a receiving space 111, which can be used to receive a battery module and components such as a cooling module, a display module, and a detection module that are compatible with the battery module.

[0036] The enclosure 110 generally includes a base plate 112 and side panels 114. The side panels 114 are formed around the periphery of the base plate 112 and extend upward to form a receiving space 111.

[0037] In some specific embodiments, the base plate 112 and the side panel 114 can be formed by stamping sheet metal parts, that is, the base plate 112 and the side panel 114 are integrally formed. In other specific embodiments, the base plate 112 and the side panel 114 can also adopt a separate structure, that is, they can be obtained by assembly.

[0038] In some embodiments, the housing 110 may further include a plurality of bottom reinforcing members 120, which are disposed in the accommodating space 111, and each bottom reinforcing member 120 has a first bending portion 122 and a second bending portion 124, the first bending portion 122 being connected to the bottom plate 112 and the second bending portion 124 being connected to the side panel 114.

[0039] Multiple bottom reinforcement members 120 can be provided at the connection between the bottom plate 112 and the side panel 114, and multiple bottom reinforcement members 120 can be arranged sequentially along the extension direction of the connection between the bottom plate 112 and the side panel 114.

[0040] Optionally, multiple bottom reinforcements 120 can be arranged continuously.

[0041] Optionally, multiple bottom reinforcements 120 may be arranged at intervals.

[0042] Optionally, some of the bottom reinforcement members 120 are arranged continuously, while some of the bottom reinforcement members 120 are arranged at intervals.

[0043] In some specific embodiments, each bottom reinforcement 120 may be made of a high-strength metal material. Considering the total mass requirements of the housing 110, the bottom reinforcement 120 may be made of a low-density metal material, such as aluminum alloy, while ensuring high strength.

[0044] In some specific embodiments, since each bottom reinforcement 120 has a first bend 122 and a second bend 124, the first bend 122 is connected to the bottom plate 112 and the second bend 124 is connected to the side panel 114, and the bottom plate 112 and the side panel 114 are not on the same plane, the first bend 122 and the second bend 124 can be adapted to bend according to the angle between the bottom plate 112 and the side panel 114 so as to be connected to the bottom plate 112 and the side panel 114 respectively.

[0045] In this embodiment, since the first bend 122 of each bottom reinforcement 120 is connected to the bottom plate 112 and the second bend 124 is connected to the side plate 114, each bottom reinforcement 120 can be pulled by its own strength so that the bottom plate 112 and the side plate 114 can maintain their original design shape. When carrying the components in the housing space 111, the deformation of the housing 110 is reduced and the safety of the battery is improved.

[0046] In some embodiments, the first bend 122 is designed to conform to the shape of the base plate 112.

[0047] In some specific embodiments, the base plate 112 is designed with some concave and convex structures to improve the overall strength of the base plate 112. Since the first bending portion 122 is connected to the base plate 112, the conformal design between the first bending portion 122 and the base plate 112 can, on the one hand, allow the base plate 112 and the first bending portion 122 to make better contact, and on the other hand, use the conformal structure to achieve the positioning between the base plate 112 and the first bending portion 122.

[0048] In some embodiments, the second bend 124 and the side panel 114 are designed to conform to the shape.

[0049] In some specific embodiments, the side panel 114 is designed with some concave and convex structures to improve the overall strength of the side panel 114. Since the second bend 124 is connected to the side panel 114, the conformal design between the second bend 124 and the side panel 114 can, on the one hand, allow the side panel 114 and the second bend 124 to make better contact, and on the other hand, use the conformal structure to achieve the positioning between the side panel 114 and the second bend 124.

[0050] In some embodiments, the base plate 112 is generally square. There are four bottom reinforcing members 120. Two of the bottom reinforcing members 120 are first bottom reinforcing members 126, located on opposite sides of the base plate 112 in the width direction, and each first bottom reinforcing member 126 extends along the length direction of the base plate 112. Two of the bottom reinforcing members 120 are second bottom reinforcing members 128, located on opposite sides of the base plate 112 in the length direction, and each second bottom reinforcing member 128 extends along the width direction of the base plate 112.

[0051] In this embodiment, the base plate 112 is generally square. Since the side panels 114 are formed on the periphery of the base plate 112 and extend upward, there can be four side panels 114. The four side panels 114 respectively form the four side edges of the base plate 112 and extend upward. The four side panels 114 are connected and sealed in sequence to form the accommodating space 111 together with the base plate 112.

[0052] In this embodiment, the base plate 112 is generally square. The direction in which the long side of the base plate 112 extends can be understood as the length direction, and the direction in which the short side extends can be understood as the width direction.

[0053] Two first bottom reinforcement members 126 are respectively disposed on both sides of the width direction of the base plate 112. Each first bottom reinforcement member 126 extends along the length direction of the base plate 112. That is, the two first bottom reinforcement members 126 are disposed at the two long sides of the base plate 112. The first bent portion 122 of each first bottom reinforcement member 126 can be connected to the long side of the base plate 112, and the second bent portion 124 of each first bottom reinforcement member 126 can be connected to the side panel 114 corresponding to the long side of the base plate 112.

[0054] Two second bottom reinforcement members 128 are respectively disposed on both sides of the base plate 112 along its length. Each second bottom reinforcement member 128 extends along the width of the base plate 112. That is, the two second bottom reinforcement members 128 are disposed at the two short sides of the base plate 112. The first bent portion 122 of each second bottom reinforcement member 128 can be connected to the short side of the base plate 112, and the second bent portion 124 of each second bottom reinforcement member 128 can be connected to the side panel 114 corresponding to the short side of the base plate 112.

[0055] In some embodiments, the battery box 100 may further include a plurality of intermediate reinforcing beams 130, which are disposed in the accommodating space 111 and are spaced apart along the length direction of the bottom plate 112. Each intermediate reinforcing beam 130 is disposed along the width direction of the bottom plate 112, and both ends of each intermediate reinforcing beam 130 are respectively connected to two first bottom reinforcing members 126.

[0056] In this embodiment, multiple intermediate reinforcing beams 130 are arranged at intervals along the length of the base plate 112, and each intermediate reinforcing beam 130 is arranged along the width of the base plate 112. The two ends of each intermediate reinforcing beam 130 are respectively connected to two first bottom reinforcing members 126. Therefore, the multiple intermediate reinforcing beams 130 can further strengthen the strength of the central region of the base plate 112 and prevent the base plate 112 from deforming due to the pressure of components.

[0057] Furthermore, in this embodiment, the two ends of the intermediate reinforcing beam 130 are respectively connected to the two first bottom reinforcing members 126. That is to say, each intermediate reinforcing beam 130 is connected by the first bottom reinforcing members 126, and is not connected to the housing 110. When multiple first bottom reinforcing members 126 bear heavy objects, the pressure of the heavy objects can be transmitted to the first bottom reinforcing members 126 through multiple first bottom reinforcing members 126. This can further share the force on the bottom plate 112 and improve the overall load-bearing capacity of the battery box 100.

[0058] Furthermore, in this embodiment, multiple intermediate reinforcing beams 130 are arranged at intervals along the length direction of the base plate 112, and each intermediate reinforcing beam 130 is arranged along the width direction of the base plate 112. The two ends of each intermediate reinforcing beam 130 are respectively connected to two first bottom reinforcing members 126. That is to say, the length of the multiple intermediate reinforcing beams 130 only needs to meet the width distance of the base plate 112. In this way, the length of the intermediate reinforcing beams 130 can be designed to be shorter, and the mechanical strength of the intermediate reinforcing beams 130 themselves can also be improved, further improving the overall load-bearing capacity of the battery box 100.

[0059] In some alternative embodiments, a plurality of intermediate reinforcing beams 130 are arranged at equal intervals along the length of the base plate 112.

[0060] In some alternative embodiments, a plurality of intermediate reinforcing beams 130 are arranged at arbitrary intervals along the length of the base plate 112.

[0061] Furthermore, each intermediate reinforcing beam 130 may also include a main plate 132, two intermediate plates 134, and two connecting plates 136. The length direction of the main plate 132 is arranged along the width direction of the base plate 112. The two intermediate plates 134 are respectively formed on both sides of the main plate in the width direction and extend downward. The two connecting plates 136 are respectively formed at the ends of the two intermediate plates 134 and extend away from the main plate.

[0062] In this embodiment, the intermediate reinforcing beam 130 is generally elongated. The main body plate 132 is generally elongated and rectangular, having a length direction and a width direction. The length direction of the main body plate 132 is set along the width direction of the base plate 112, and the width direction of the main body plate 132 is set along the length direction of the base plate 112, so that the intermediate reinforcing beam 130 is arranged along the width direction of the base plate 112.

[0063] Two intermediate plates 134 are formed on both sides of the main plate in the width direction and bend downward to enhance the mechanical strength of the main plate 132 in the length direction.

[0064] Two connecting plates 136 are formed at the ends of the two intermediate plates 134 respectively, and extend in a direction away from the main plate, so as to be positioned or connected to the base plate 112.

[0065] In some alternative embodiments, each connecting plate 136 is fitted to the first bend 122 of the first bottom reinforcement 126. This allows the connecting plate 136 to provide a larger contact area, enabling the intermediate reinforcing beam 130 to be stably connected to the first bottom reinforcement 126.

[0066] Furthermore, since the first bend 122 is connected to the base plate 112, and the base plate 112 is usually designed with some concave and convex structures to enhance its strength, the first bend 122 will also be designed with some concave and convex structures to follow the shape of the base plate 112. Also, since the connecting plate 136 is attached to the first bend 122 of the first bottom reinforcing member 126, the connecting plate 136 can also be designed with some concave and convex structures to follow the shape of the first bend 122. These concave and convex structures can increase the strength of the connecting plate 136 itself, and can also be used to position the intermediate reinforcing beam 130.

[0067] In some embodiments, the main body plate 132 is fixedly connected to the first bottom reinforcement 126.

[0068] Optionally, the main body plate 132 and the first bent portion 122 of the first bottom reinforcement 126 can be connected by fasteners.

[0069] Optionally, the end of the main body plate 132 abuts against the second bend 124 of the first bottom reinforcement 126 and is connected by fasteners.

[0070] Optionally, the main body plate 132 and the first bent portion 122 of the first bottom reinforcement 126 can be connected by fasteners, and the end of the main body plate 132 abuts against the second bent portion 124 of the first bottom reinforcement 126 and is connected by fasteners.

[0071] In some alternative embodiments, each connecting plate 136 is fixedly connected to the first bend 122 of the first bottom reinforcement 126. Specifically, the connecting plate 136 and the first bend 122 of the first bottom reinforcement 126 can be connected by fasteners.

[0072] In some embodiments, the battery box 100 may further include a water-cooled plate 140, which may be disposed in the housing space 111 for regulating the temperature of the components (especially the battery module) in the housing space 111.

[0073] In some specific embodiments, the interior of the water-cooled plate 140 may define a plurality of coiled and extending flow cavities 144, each having an inlet and an outlet. The inlet is used to introduce a heat exchange medium (such as water), and the outlet is used to discharge the heat exchange medium. As the heat exchange medium flows within the flow cavities 144, it provides cooling or heating to the components within the housing space 111.

[0074] Optionally, the water-cooled plate 140 is laid on multiple intermediate reinforcing beams 130. Since the intermediate reinforcing beams 130 have vertical height, the water-cooled plate 140 is laid on multiple intermediate reinforcing beams 130, and the upper surface of the water-cooled plate 140 supports the components. This not only allows for the adjustment of the component temperature, but also creates a flat bearing surface, making the layout of components such as battery modules more orderly and more stable.

[0075] Furthermore, the bottom wall of the water-cooled plate 140 is designed to conform to the shape of the main body plate 132.

[0076] Since the water-cooled plate 140 is laid on multiple intermediate reinforcing beams 130, and the main plate 132 is at the top of each intermediate reinforcing beam 130, the bottom wall of the water-cooled plate 140 is in direct contact with the main plate 132. Because multiple flow cavities are formed inside the water-cooled plate 140, the bottom wall of the flow cavity needs to protrude downwards to form the flow cavity. In other words, the bottom wall of the flow cavity is designed with a concave-convex structure.

[0077] In this embodiment, due to the conformal design of the bottom wall of the water-cooled plate 140 and the main body plate 132, the bottom wall of the water-cooled plate 140 and the main body plate 132 fit together more closely, resulting in a better fixation effect between the water-cooled plate 140 and the main body plate 132.

[0078] In some alternative embodiments, the battery box 100 may also include two positioning beams 150, which are respectively disposed on both sides of the water-cooled plate 140, and each positioning beam 150 is fixed to the bottom plate 112 or the bottom reinforcement 120 to position the water-cooled plate 140.

[0079] In this embodiment, two positioning beams 150 are arranged at intervals along the length of the base plate 112, and each intermediate reinforcing beam 130 is arranged along the width of the base plate 112. The water-cooled plate 140 is disposed between the two positioning beams 150, and the water-cooled plate 140 is more stably placed in the receiving space 111 under the clamping of the two positioning beams 150.

[0080] Furthermore, the positioning beam 150 may also include a protrusion 152 and two fixing parts 154. The protrusion 152 can limit the water-cooled plate 140, and the two fixing parts 154 can be respectively disposed on both sides of the protrusion 152 so as to fit against the base plate 112.

[0081] Furthermore, the water-cooled plate 140 has an extension 142 on its periphery, and the protrusion 152 is provided with a relief groove 152a to avoid the extension 142.

[0082] In some embodiments, the housing 110 has an inwardly flanged edge 116 extending inwardly from the top of the side panel 114. The battery box 100 may also include a plurality of top reinforcement members 160, which are disposed at the connection between the inwardly flanged edge 116 and the side panel 114, and each top reinforcement member 160 has a third bend 162 and a fourth bend 164, the third bend 162 being connected to the inwardly flanged edge 116 and the fourth bend 164 being connected to the side panel 114.

[0083] In some specific embodiments, each top reinforcement 160 may be made of a high-strength metal material. Considering the requirements of the total mass of the housing 110, the top reinforcement 160 is made of a low-density metal material, such as aluminum alloy, while ensuring high strength.

[0084] In some specific embodiments, since each top reinforcement 160 has a third bend 162 and a fourth bend 164, the third bend 162 is connected to the inner flange 116, and the fourth bend 164 is connected to the side panel 114, and the inner flange 116 and the side panel 114 are not on the same plane, the third bend 162 and the fourth bend 164 can be adapted to bend according to the angle between the inner flange 116 and the side panel 114 so as to be connected to the inner flange 116 and the side panel 114 respectively.

[0085] In this embodiment, since the third bend 162 of each top reinforcement 160 is connected to the inner flange 116 and the fourth bend 164 is connected to the side panel 114, each top reinforcement 160 can be pulled by its own strength so that the inner flange 116 and the side panel 114 can maintain their original design shape. When carrying the components in the housing space 111, the deformation of the housing 110 is reduced, and the safety of the battery is improved.

[0086] Furthermore, the housing 110 is generally square. There are four top reinforcing members 160. Two of the top reinforcing members 160 are first top reinforcing members 166, located on either side of the width of the housing 110, and each first top reinforcing member 166 extends along the length of the housing 110. Two of the top reinforcing members 160 are second bottom reinforcing members 128, located on either side of the length of the housing 110, and each second bottom reinforcing member 168 extends along the width of the housing 110.

[0087] In some embodiments, the housing 110 has an inwardly flanged edge 116 extending inward from the top of the side panel 114. A plurality of first through holes 112a are provided on the bottom plate 112. A plurality of second through holes 116a are provided on the inwardly flanged edge 116, and the plurality of second through holes 116a correspond one-to-one with the plurality of first through holes 112a in the vertical direction.

[0088] The battery box 100 may also include a plurality of sleeves 170, which are disposed in the receiving space 111. The plurality of sleeves 170, the plurality of first through holes 112a and the plurality of second through holes 116a correspond one-to-one. The lower end of each sleeve 170 is directly opposite the first through hole 112a and the upper end of each sleeve 170 is directly opposite the second through hole 116a.

[0089] In this embodiment, sleeves 170 are disposed in the receiving space 111, and the lower end of each sleeve 170 is directly opposite the first through hole 112a, and the upper end of each sleeve 170 is directly opposite the second through hole 116a. That is to say, each sleeve 170 is connected between the bottom reinforcement 120 and the top reinforcement 160. In this way, the bottom reinforcement 120 and the top reinforcement 160 can be used to form a reinforcement, making the bottom reinforcement 120, the top reinforcement 160 and the box 110 more integrated and the reinforcement effect better.

[0090] In addition, each battery 10 has a battery case 100, within which a battery module is disposed. Multiple batteries can be assembled into a battery pack 1. In some embodiments, multiple batteries 10 can be stacked to form a battery pack 1.

[0091] Specifically, multiple batteries 10 can be stacked in series using guide rods 20 to form a battery pack 1. In this embodiment, the lower end of each sleeve 170 is directly opposite the first through hole 112a, and the upper end of each sleeve 170 is directly opposite the second through hole 116a, so that the guide rods 20 can be stacked in series through the first through hole 112a, the sleeves 170, and the second through hole 116a.

[0092] With the accelerating electrification of construction machinery, multiple battery enclosures are needed to increase operating range and achieve greater power capacity. Existing battery packs require one or more layered frames for installation, which presents several technical drawbacks: First, the battery enclosures themselves cannot be fixed in place, and gaps exist during assembly of enclosures within the same layer, resulting in a large space occupation for the entire battery system; second, to ensure enclosure versatility, each battery enclosure needs to be equipped with various interfaces (water cooling interface, positive interface, negative interface, manual operation switch communication interface, heating interface), increasing the cost per enclosure; third, due to the presence of the battery mounting frame, the entire battery system needs to be installed layer by layer, resulting in long installation time, low installation efficiency, and increased main unit assembly time.

[0093] In this embodiment, since the battery pack 1 is constructed by stacking multiple batteries 10 in series using multiple guide rods 20, this method eliminates the need for a frame for installation and reduces the gap between the batteries 10, thereby reducing the volume of the battery pack 1. Furthermore, since the multiple batteries 20 are directly connected in series, some interfaces (such as MSD) can be eliminated or shared during the actual assembly of the casing, which also reduces the cost of a single battery 10. In addition, this method of connecting multiple batteries 10 in series using multiple guide rods 20 is simple, convenient, and efficient to install, which is beneficial for mass production.

[0094] Furthermore, the housing 110 is generally square, with first through holes 112a at the four corners of the base plate 112, and second through holes 116a at the four corners of the inner flange 116 of the housing 110. Four sleeves 170 are provided, each located at one of the four corners of the housing 110. Each battery pack 1 can be stacked in series via four guide rods 20.

[0095] In addition, this application also provides a battery 10, which may include the housing 110 in any of the above embodiments.

[0096] Furthermore, the battery 10 may also include a battery module and components such as a cooling module, a display module, and a detection module that are compatible with the battery module. These components may be housed in the accommodating space 111 of the housing 110.

[0097] In the battery box 100, since the first bend 122 of each bottom reinforcement 120 is connected to the bottom plate 112 and the second bend 124 is connected to the side plate 114, each bottom reinforcement 120 can be pulled by its own strength so that the bottom plate 112 and the side plate 114 can maintain their original design shape. When carrying the components in the storage space 111, the deformation of the box 110 is reduced and the safety of the battery is improved.

[0098] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0099] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.

[0100] It should be readily understood that the terms “on,” “above,” and “on top of” in this application should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on something” but also “on something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0101] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of devices in use or operation other than those shown in the figures. Devices may have other orientations, and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0102] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A battery box characterized by, The battery box comprises: a box body having a bottom plate and a side wall formed at the periphery of the bottom plate and extending upward to form a containing space; a plurality of bottom reinforcing members arranged in the containing space, each of the bottom reinforcing members having a first bent portion connected to the bottom plate and a second bent portion connected to the side wall.

2. The battery box according to claim 1, wherein: the bottom plate is in a square shape as a whole; the bottom reinforcing members are four in number; and two of the bottom reinforcing members are first bottom reinforcing members, each of the first bottom reinforcing members extending along the length direction of the bottom plate and located at one side of the width direction of the bottom plate; two of the bottom reinforcing members are second bottom reinforcing members, each of the second bottom reinforcing members extending along the width direction of the bottom plate and located at one side of the length direction of the bottom plate.

3. The battery pack of claim 2, wherein, The battery box further comprises: a plurality of intermediate reinforcing beams arranged in the containing space, the intermediate reinforcing beams being arranged in the length direction of the bottom plate and each extending in the width direction of the bottom plate, and each of the intermediate reinforcing beams having two ends connected to the first bottom reinforcing members.

4. The battery box according to claim 3, wherein: each of the intermediate reinforcing beams comprises: a main plate arranged in the width direction of the bottom plate; two intermediate plates formed at two sides of the main plate in the width direction and extending downward; two connecting plates formed at the ends of the intermediate plates and extending away from the main plate; and each of the connecting plates is attached to the first bent portion of the first bottom reinforcing member; the main plate is fixedly connected to the first bottom reinforcing member; or each of the connecting plates is fixedly connected to the first bent portion of the first bottom reinforcing member.

5. The battery pack of claim 4, wherein, The battery box further comprises: a water-cooling plate arranged in the containing space and laid on the intermediate reinforcing beams; and the bottom wall of the water-cooling plate is designed in the same shape as the main plate. The battery box further comprises:

6. The battery box according to any one of claims 1 to 5, characterized in that a water-cooling plate arranged in the containing space; and two positioning beams arranged at two sides of the water-cooling plate and fixed to the bottom plate or the bottom reinforcing members to position the water-cooling plate.

7. The battery box according to any one of claims 1 to 5, wherein: the first bent portion is designed in the same shape as the bottom plate; and / or the second bent portion is designed in the same shape as the side wall.

8. The battery box according to any one of claims 1 to 5, wherein: the box body has an inwardly extending flange extending inward from the top end of the side wall; and the battery box further comprises: ​ ​ A plurality of top reinforcements, the plurality of top reinforcements are arranged at the connection between the inner flange and the side wall, and each of the top reinforcements has a third bending part and a fourth bending part, the third bending part is connected with the inner flange, and the fourth bending part is connected with the side wall.

9. The battery box according to any one of claims 1 to 5, wherein: the box body has an inner flange extending inwardly from the top end of the side wall; a plurality of first through holes are arranged on the bottom plate; a plurality of second through holes are arranged on the inner flange, and the plurality of second through holes correspond to the plurality of first through holes one by one in the vertical direction; the battery box further comprises: a plurality of sleeves, the plurality of sleeves are arranged in the accommodation space, and the plurality of sleeves, the plurality of first through holes and the plurality of second through holes correspond to each other one by one, the lower end of each sleeve is opposite to the first through hole, and the upper end of each sleeve is opposite to the second through hole.

10. A battery, characterized by A battery box comprising any one of claims 1 to 9.

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