Box body, battery pack and electric equipment

Abstract

The utility model discloses a box body, a battery pack and electric equipment. The box body comprises a cold plate, a box body and a box cover, the protection plate is arranged on one side of the cold plate in the first direction; and the foaming material piece is formed between the protection plate and the cold plate in a foaming manner and is connected with the cold plate and the protection plate. According to the box body disclosed by the utility model, the foaming material piece is foamed and formed between the cold plate and the protective plate, so that the sealing reliability among the foaming material piece, the cold plate and the protective plate can be improved, and the probability that water intrudes into a cold plate region wrapped by the foaming material piece and corrodes the region is reduced, thereby improving the reliability of a battery pack in a working process; and on the other hand, the connection reliability of the cold plate and the protection plate can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a box body, a battery pack and an electrical equipment. Background Art

[0002] The cold plate is an important component on the battery pack. During the operation of the battery pack, the cold plate can cool the battery. Usually, a protective plate is arranged outside the cold plate to protect the cold plate, and a heat-insulating and shock-absorbing material is filled between the cold plate and the protective plate. In the related art, water in the external environment can enter between the heat-insulating and shock-absorbing material and the cold plate, corrode the cold plate wrapped by the heat-insulating and shock-absorbing material, and affect the reliability of the battery pack. Content of the Utility Model

[0003] The utility model aims to at least solve one of the technical problems existing in the prior art. For this reason, the utility model provides a box body which can improve the reliability during the operation of the battery pack.

[0004] The utility model also provides a battery pack with the above box body.

[0005] The utility model also provides an electrical equipment with the above battery pack.

[0006] The box body according to the first aspect of the utility model is used for a battery pack, and the box body includes: a cold plate; a protective plate arranged on one side of the cold plate in the first direction; a foaming material part which is foamed and formed between the protective plate and the cold plate and connects the cold plate and the protective plate.

[0007] The box body according to the first aspect of the utility model, by foaming and forming the foaming material part between the cold plate and the protective plate, can improve the sealing reliability between the foaming material part and the cold plate and the protective plate, reduce the probability of water invading the cold plate area wrapped by the foaming material part and corroding this area, thereby improving the reliability during the operation of the battery pack. On the other hand, the connection reliability between the cold plate and the protective plate can be improved.

[0008] According to some embodiments of the utility model, a groove recessed in the direction away from the cold plate is formed on the protective plate, and at least part of the foaming material part is formed in the groove.

[0009] According to some embodiments of the utility model, the box body further includes a sealing member which extends circumferentially along the groove to form a ring, and the sealing member is hermetically connected between the cold plate and the protective plate.

[0010] According to some embodiments of the utility model, a sealing groove opening towards the cold plate is further arranged on the protective plate, the sealing groove is arranged around the groove, and the sealing member is arranged in the sealing groove.

[0011] According to some embodiments of the present invention, the sealing member is a foamed member, and the sealing member is foamed and formed between the inner wall of the sealing groove and the cold plate.

[0012] According to some embodiments of the utility model, the protective plate is provided with a fixing hole penetrating the protective plate along the first direction, the fixing hole is located in the sealing groove, and the box body also includes a fastener, and the fastener passes through the fixing hole and is connected to the cold plate.

[0013] According to some embodiments of the utility model, the protective plate includes a first layer and a second layer stacked in the first direction, the first layer is arranged on the side of the second layer facing the foam material piece, the groove is formed in the first layer, the first layer is a continuous fiber material piece, and the second layer is a metal piece.

[0014] According to some embodiments of the present invention, the protective plate further includes a third layer, the third layer is arranged on a side of the second layer away from the first layer, and the third layer is a continuous fiber material piece.

[0015] According to some embodiments of the utility model, the box body also includes a frame and an upper cover, the frame has open openings on both sides in the first direction, the upper cover is arranged on the frame, the cold plate is connected to the side of the frame away from the upper cover, and the frame, the cold plate and the upper cover cooperate to define a accommodating cavity for accommodating battery cells.

[0016] According to a second aspect of the present invention, a battery pack includes: the box body according to the first aspect of the present invention.

[0017] According to the battery pack of the second aspect of the present invention, by providing the box body according to the first aspect of the present invention, the reliability of the battery pack during operation can be improved.

[0018] According to the third aspect of the utility model, the electrical equipment includes: the battery pack according to the second aspect of the utility model.

[0019] According to the electric equipment of the third aspect of the utility model, by providing the battery pack according to the second aspect of the utility model, the reliability of the electric equipment during operation can be improved.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of a battery pack according to an embodiment of the utility model;

[0022] Figure 2 is Figure 1 a schematic view of the protective plate and the foaming material member shown in

[0023] Figure 3 is a cross-sectional view of the cold plate, the protective plate and the foaming material member according to an embodiment of the present utility model;

[0024] Figure 4 is a cross-sectional view of the cold plate, the protective plate and the foaming material member according to another embodiment of the present utility model.

[0025] Reference numerals:

[0026] 100, battery pack;

[0027] 10, box body; 11, cold plate; 111, cooling convex portion; 112, cooling flow channel; 12, protective plate; 121, groove; 122, sealing groove; 123, fixing hole; 124, first layer; 125, second layer; 126, third layer; 13, foaming material member; 14, frame; 15, upper cover; 16, seal; 17, fastener;

[0028] 20, battery cell. Detailed implementation manners

[0029] The embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present utility model, and should not be construed as limiting the present utility model.

[0030] Reference will be made below to Figures 1-4 describe the box body 10 according to an embodiment of the first aspect of the present utility model.

[0031] The box body 10 according to an embodiment of the first aspect of the present utility model is for a battery pack 100, such as Figure 1 , Figure 3 and Figure 4 shown, the box body 10 includes: a cold plate 11, a protective plate 12 and a foaming material member 13.

[0032] Specifically, the protective plate 12 is disposed on one side of the cold plate 11 in the first direction, and the foaming material member 13 is foam-molded between the protective plate 12 and the cold plate 11 and connects the cold plate 11 and the protective plate 12.

[0033] Among them, the first direction is the thickness direction of the cold plate 11. The foaming material part 13 will wrap the cooling area on the cold plate 11. During the operation of the battery pack 100, the foaming material part 13 can keep the cold plate 11 warm and absorb part of the vibration on the cold plate 11. The coolant flows in the cooling area and takes away the heat on the cold plate 11, thereby realizing the cooling function of the cold plate 11.

[0034] During the production process, first, the protection plate 12 and the cold plate 11 are relatively fixed, and the foaming material is placed in the set area between the cold plate 11 and the protection plate 12. Then, the foaming material is foamed. During the foaming process, the foaming material gradually fills the gap between the cold plate 11 and the protection plate 12. After the foaming is completed, the foaming material part 13 will wrap the cooling area on the cold plate 11, and the foaming material part 13 is adhesively connected to both the cold plate 11 and the protection plate 12.

[0035] For those skilled in the art, it can be understood that directly foaming the foaming material part 13 between the cold plate 11 and the protection plate 12 can improve the fitting degree of the foaming material part 13 with the cold plate 11 and the protection plate 12, thereby improving the sealing reliability between the foaming material part 13 and the cold plate 11 and the protection plate 12. During the use of the battery pack 100, it can reduce the probability of water entering between the foaming material part 13 and the cold plate 11 and corroding the cold plate 11 area wrapped by the foaming material part 13, thereby improving the reliability during the operation of the battery pack 100.

[0036] The foaming material part 13 is formed by foaming a foaming material with adhesive ability. For example, the foaming material can be polyurethane foaming glue, epoxy foaming glue, silicone foaming glue or epoxy and rubber hybrid foaming material. The original state of the foaming material can be solid, or high thixotropic paste or flowing liquid. The foaming form can be chemical reaction gas generation foaming, or external foaming agent heating to generate gas foaming. After foaming and forming, the foaming material part 13 can be adhesively bonded between the cold plate 11 and the protection plate 12, and the contact area of the foaming material part 13 with the cold plate 11 and the protection plate 12 is large, which can improve the connection reliability between the cold plate 11 and the protection plate 12.

[0037] According to the box body 10 of the first aspect embodiment of the present invention, on the one hand, by foaming and forming the foaming material part 13 between the cold plate 11 and the protection plate 12, the sealing reliability between the foaming material part 13 and the cold plate 11 and the protection plate 12 can be improved, reducing the probability of water invading the cold plate 11 area wrapped by the foaming material part 13 and corroding this area, thereby improving the reliability during the operation of the battery pack 100. On the other hand, the connection reliability between the cold plate 11 and the protection plate 12 can be improved.

[0038] In some embodiments of the present invention, such as Figures 2-4As shown, a groove 121 recessed away from the cold plate 11 is formed on the protective plate 12, and at least a part of the foamed material part 13 is formed in the groove 121. That is to say, part of the foamed material part 13 may be formed in the groove 121, or the entire foamed material part 13 may be formed in the groove 121.

[0039] By providing the groove 121, during the foaming process of the foamed material part 13, the groove 121 can limit the flow path of the foamed material part 13, thereby improving the position accuracy of the foamed material part 13 after foaming is completed. And the groove 121 can provide a receiving space for the foamed material part 13, making the size of the foamed material part 13 easier to meet the design requirements, thereby reducing the product design difficulty.

[0040] In some embodiments of the present invention, as Figure 3 and Figure 4 shown, a plurality of cooling protrusions 111 are formed on the side of the cold plate 11 facing the protective plate 12. Cooling channels 112 are defined within the cooling protrusions 111, and a part of the cooling protrusions 111 extends into the groove 121. In this way, the size occupation of the cold plate 11 and the protective plate 12 in the first direction can be reduced, thereby increasing the accommodation space within the box 10. After production is completed, the foamed material part 13 can wrap the cooling protrusions 111. It can be understood that after the cooling protrusions 111 are provided, the surface area of the cold plate 11 will be larger. Therefore, the wrapping degree of the foamed material part 13 on the cold plate 11 can be improved, thereby enhancing the heat preservation and shock absorption effects of the foamed material part 13 on the cold plate 11.

[0041] In some embodiments of the present invention, the density of the foamed material part 13 is less than or equal to 0.5 g / cm 3 , for example, the density of the foamed material part 13 can be 0.1 g / cm 3 , 0.35 cm 3 , 0.42 cm 3 or 0.5 cm 3 . Thus, it is convenient to realize the lightweight design of the battery pack 100.

[0042] In some embodiments of the present invention, the thickness of the foamed material part 13 is 3 mm - 10 mm. For example, the thickness of the foamed material part 13 can be 3 mm, 4 mm, 5.6 mm, 7.2 mm, 9.7 mm or 10 mm. Thus, the heat preservation effect of the foamed material part 13 on the cold plate 11 can meet the usage requirements, and the weight of the foamed material part 13 will not be too heavy, which is beneficial to realizing the lightweight design of the battery pack 100.

[0043] In some embodiments of the present utility model, the depth of the groove 121 is 3 mm - 10 mm. For example, the depth of the groove 121 can be 3 mm, 4 mm, 5.6 mm, 7.2 mm, 9.7 mm or 10 mm. Thus, the depth of the groove 121 can meet the foaming requirements of the foaming material part 13.

[0044] In some embodiments of the present utility model, the box body 10 further includes a seal 16. The seal 16 extends circumferentially along the groove 121 to form a ring, and the seal 16 is sealingly connected between the cold plate 11 and the protection plate 12. Thus, the seal 16 can block water from entering between the foaming material part 13 and the cold plate 11 on the circumferential outer side of the foaming material part 13, thereby further reducing the probability of water entering between the foaming material part 13 and the cold plate 11 and corroding the area of the cold plate 11 wrapped by the foaming material part 13, and further improving the reliability during the operation of the battery pack 100.

[0045] In some embodiments of the present utility model, as Figure 3 and Figure 4 shown, the protection plate 12 is further provided with a seal groove 122 opening towards the cold plate 11. The seal groove 122 is arranged around the groove 121, and the seal 16 is arranged in the seal groove 122. By providing the seal groove 122, the seal groove 122 can provide a receiving space for the seal 16. On the premise that the size of the seal 16 meets the sealing requirements, the gap generated between the cold plate 11 and the protection plate 12 by the seal 16 can be reduced, thereby facilitating the arrangement of the cold plate 11 and the protection plate 12. And during the production process, the seal groove 122 can make the exhaust during the foaming process of the foaming material part 13 more smooth. When the foaming material part 13 overflows from the groove 121, the seal groove 122 can accommodate the overflowing foaming material part 13.

[0046] In addition, during the production process, the seal groove 122 can position the seal 16, thereby improving the position accuracy of the seal 16. After the production is completed, the seal groove 122 can limit the seal 16, reducing the probability of the seal 16 coming off between the cold plate 11 and the protection plate 12, and thus improving the sealing reliability of the seal 16 between the cold plate 11 and the protection plate 12.

[0047] In some embodiments of the present utility model, the width of the sealing groove 122 is 5 mm - 8 mm. For example, the width of the sealing groove 122 can be 5 mm, 6.3 mm, 7.2 mm, or 8 mm. The depth of the sealing groove 122 is 0.5 mm - 2 mm. For example, the depth of the sealing groove 122 can be 0.5 mm, 0.7 mm, 1.2 mm, 1.6 mm, 1.8 mm, or 2 mm. Thus, the limiting effect of the sealing groove 122 on the seal 16 can meet the usage requirements, and the inner wall of the sealing groove 122 has sufficient contact area with the seal 16, so that the sealing reliability between the sealing groove 122 and the seal 16 can meet the usage requirements.

[0048] The distance between the edge of the protective plate 12 and the groove 121 is 10 mm - 15 mm. For example, the distance between the edge of the protective plate 12 and the groove 121 can be 10 mm, 11 mm, 12.1 mm, 13.8 mm, 14.1 mm, or 15 mm. Thus, the strength of the part between the edge of the protective plate 12 and the groove 121 can meet the usage requirements.

[0049] In some embodiments of the present utility model, there are multiple fixing holes 123, and the distance between two adjacent fixing holes 123 is 8 - 10 cm. For example, the distance between two adjacent fixing holes 123 can be 8 cm, 8.5 cm, 9 cm, 9.2 cm, or 10 cm. Thus, the strength of the fastener 17 connecting the protective plate 12 and the cold plate 11 can meet the usage requirements, and there is sufficient space between two adjacent fasteners 17 for the foaming material in the groove 121 to overflow into the sealing groove 122.

[0050] In some embodiments of the present utility model, the seal 16 is a foamed part, and the seal 16 is foamed and formed between the inner wall of the sealing groove 122 and the cold plate 11. After the seal 16 is foamed and formed, the seal 16 fits well with the inner wall of the sealing groove 122 and the cold plate 11, and the seal 16 can be adhesively connected to the inner wall of the sealing groove 122 and the cold plate 11 after being foamed and formed. Thus, the sealing reliability of the seal 16 between the cold plate 11 and the protective plate 12 can be further improved.

[0051] Among them, the foamed part and the foaming material part 13 can be made of the same foaming material. During the production process, after the cold plate 11 and the protective plate 12 are fixed in place, foaming materials can be placed in the groove 121 and the sealing groove 122 respectively for foaming; or a foaming material can be placed in the groove 121. During the foaming process, after the foaming material fills the groove 121, it overflows from the groove 121 into the sealing groove 122 and fills the sealing groove 122.

[0052] In some embodiments of the present utility model, such as Figures 2-4As shown in the figure, the protective plate 12 is provided with a fixing hole 123 penetrating the protective plate 12 in the first direction. The fixing hole 123 is located in the sealing groove 122. The box body 10 further includes a fastener 17, and the fastener 17 passes through the fixing hole 123 and is connected to the cold plate 11.

[0053] During the production process, first connect the protective plate 12 and the cold plate 11 through the fastener 17, and then foam the foaming material part 13 and the sealing part 16. Among them, foaming materials can be placed in both the groove 121 and the sealing groove 122, and then foaming is carried out separately in the groove 121 and the sealing groove 122.

[0054] It can also be that a foaming material is placed in the groove 121. It can be understood that after the protective plate 12 and the cold plate 11 are connected through the fastener 17, the part of the protective plate 12 between the groove 121 and the sealing groove 122 and the cold plate 11 are not completely sealed, and the cold plate 11 and the protective plate 12 will deform under the extrusion of the foaming material. At the same time, the fastener 17 can block the fixing hole 123. During the foaming process, after the foaming material fills the groove 121, the foaming material extrudes the part of the cold plate 11 and the protective plate 12 between the groove 121 and the sealing groove 122, and the foaming material overflows from between the cold plate 11 and the protective plate 12 into the sealing groove 122 until the foaming material fills the sealing groove 122 and foams and forms in the sealing groove 122. At the same time, the fastener 17 blocks the fixing hole 123 so that the foaming material cannot flow out from the fixing hole 123. Thus, the connection between the cold plate 11 and the protective plate 12 can be realized, and for those skilled in the art, it can be understood that the fastener 17 has a relatively high connection reliability and can improve the connection reliability between the cold plate 11 and the protective plate 12.

[0055] Preferably, the fastener 17 is a fastening screw, and the diameter of the fastening screw is 5 mm. In this way, the operation of connecting the fastener 17 is relatively simple.

[0056] In some embodiments of the present invention, as Figure 3 shown, the protective plate 12 includes a first layer 124 and a second layer 125 arranged in a stacked manner in the first direction. The first layer 124 is arranged on the side of the second layer 125 facing the foaming material part 13. The groove 121 is formed in the first layer 124. The first layer 124 is a continuous fiber material part. For example, the first layer 124 can be a continuous fiber-reinforced epoxy resin, polyurethane resin or unsaturated resin material part such as glass fiber, basalt fiber or carbon fiber. The first layer 124 can also be a continuous fiber-reinforced PP material or PET material part such as glass fiber, basalt fiber or carbon fiber. The second layer 125 is a metal part. For example, the second layer 125 can be a steel material part, an aluminum material part or an aluminum-magnesium alloy material part. Among them, the first direction is the thickness direction of the protective plate 12.

[0057] It is understandable that the continuous fiber material piece has strong chemical stability, the groove 121 is formed in the first layer 124, and after the foaming material piece 13 is foamed in the groove 121, the chemical corrosion degree of the foaming material piece 13 to the first layer 124 is relatively light, thereby, the structural strength of the protective plate 12 after the foaming material piece 13 is foamed can meet the use requirements, and the yield rate of the box body 10 is improved. In addition, the continuous fiber material piece has a light density, strong impact resistance and high strength, which makes it easier for the performance of the protective plate 12 to meet the use requirements.

[0058] Metal parts have high strength and high plastic deformation capacity. By setting the second layer 125 as a metal part, it is easier to make the strength of the protective plate 12 meet the use requirements and reduce the difficulty of production.

[0059] The thickness of the first layer 124 located at the bottom wall of the groove 121 is 0.5 mm to 2 mm. For example, the thickness of the first layer 124 located at the bottom wall of the groove 121 can be 0.5 mm, 0.6 mm, 1.3 mm, 1.7 mm or 2 mm. Thus, the support strength of the first layer 124 on the foam material piece 13 can meet the use requirements.

[0060] The thickness of the metal layer is 0.3 mm to 3 mm, for example, the thickness of the metal layer can be 0.3 mm, 0.4 mm, 0.7 mm, 1.2 mm, 2 mm, 2.7 mm or 3 mm, preferably, 0.5 mm to 0.8 mm, for example, the thickness of the metal layer can be 0.5 mm, 0.6 mm, 0.61 mm, 0.7 mm, 0.72 mm or 0.8 mm. Thus, the strength of the metal layer can meet the use requirements, and the thickness of the protective plate 12 will not be too large, so that the arrangement of the protective plate 12 is easy to achieve.

[0061] In some embodiments of the present invention, Figure 4 As shown, the protective plate 12 further includes a third layer 126, which is disposed on the side of the second layer 125 away from the first layer 124, and the third layer 126 is a continuous fiber material. For example, the third layer 126 can be an epoxy resin, polyurethane resin or unsaturated resin material reinforced with continuous fibers such as glass fiber, basalt fiber or carbon fiber, the third layer 126 can also be a PP material or PET material reinforced with continuous fibers such as glass fiber, basalt fiber or carbon fiber, the third layer 126 can also be a paper honeycomb, aluminum honeycomb or PP honeycomb material reinforced with continuous fibers such as glass fiber, basalt fiber or carbon fiber.

[0062] In this way, both sides of the metal part are wrapped by the continuous fiber material part, which can provide protection for the metal part and reduce the probability of the metal part being corroded by the external environment. Therefore, the anti-corrosion process of the metal part can be simplified and the production cost can be reduced.

[0063] Preferably, the first layer 124 and the second layer 125 are adhesively connected or hot-pressed, and the third layer 126 and the second layer 125 are adhesively connected or hot-pressed. Thus, the connection strength and reliability between the first layer 124 and the third layer 126 and the second layer 125 can meet the usage requirements, and the production efficiency is relatively high.

[0064] In some embodiments of the present utility model, the thickness of the third layer 126 is 1 mm - 3 mm. For example, the thickness of the third layer 126 can be 1 mm, 1.2 mm, 2 mm, 2.7 mm or 3 mm. Thus, the strength of the third layer 126 can meet the usage requirements, and the thickness of the protection plate 12 will not be too large, facilitating the arrangement of the protection plate 12.

[0065] In some embodiments of the present utility model, as Figure 1 shown, the box body 10 further includes a frame 14 and an upper cover 15. Both sides of the frame 14 in the first direction have open openings, the upper cover 15 is disposed on the frame 14, and the cold plate 11 is connected to the side of the frame 14 facing away from the upper cover 15. The frame 14, the cold plate 11 and the upper cover 15 cooperate to define a receiving cavity for receiving the battery cell 20. After assembly, the battery cell 20 is placed in the receiving cavity, and the contact between the cold plate 11 and the battery cell 20 can cool the battery cell 20. During the product design process, parameters such as the shape or size of the frame 14 and the upper cover 15 can be adjusted to meet more product design requirements. Preferably, the cold plate 11 is welded to the frame 14. In this way, the connection strength and reliability between the cold plate 11 and the frame 14 are relatively high, and the operation is convenient.

[0066] In some embodiments of the present utility model, the box body 10 includes a cold plate 11 and a protection plate 12. The protection plate 12 is disposed on one side of the cold plate 11 in the thickness direction. A groove 121 recessed away from the cold plate 11 and a sealing groove 122 opening towards the cold plate 11 are formed on the protection plate 12. The sealing groove 122 is arranged around the groove 121. A foam material piece is filled in the groove 121, a sealant is filled in the sealing groove 122, and the inner wall of the sealing groove 122 is hermetically connected to the cold plate 11 through the sealant.

[0067] Among them, by providing the foam material piece, the foam material piece can keep the cold plate 11 warm, thereby improving the effect of the cold plate 11, and the foam material piece can absorb the vibration on the cold plate 11. By providing the sealing groove 122 and the sealant, the sealant can prevent water from entering the groove 121 from the gap between the cold plate 11 and the protection plate 12 and corroding the cold plate 11 wrapped by the foam material piece, thereby improving the reliability during the operation of the battery pack 100.

[0068] The battery pack 100 according to the second aspect embodiment of the present utility model includes: the box body 10 according to the first aspect embodiment of the present utility model described above.

[0069] By providing the box body 10 according to the first aspect embodiment of the present utility model, the battery pack 100 according to the second aspect embodiment of the present utility model can improve the reliability during the operation of the battery pack 100.

[0070] In some embodiments of the present utility model, as Figure 1 shown, the battery pack 100 includes a box body 10 and battery cells 20. Among them, the box body 10 includes a cold plate 11, a protection plate 12, a frame 14, and an upper cover 15. Both sides of the frame 14 in the first direction have open openings, and the upper cover 15 is covered on the frame 14. The cold plate 11 is connected to the side of the frame 14 facing away from the upper cover 15. The frame 14, the cold plate 11, and the upper cover 15 cooperate to define a receiving cavity. The protection plate 12 is provided on the side of the cold plate 11 away from the frame 14. A groove 121 recessed in the direction away from the cold plate 11 and a sealing groove 122 opening towards the cold plate 11 are formed on the protection plate 12. A foaming material part 13 is formed by foaming between the protection plate 12 and the cold plate 11 and is located in the groove 121. A sealing member 16 is provided in the sealing groove 122. The sealing member 16 is a foaming member, and the sealing member 16 is formed by foaming in the sealing groove 122.

[0071] The battery pack 100 further includes a plurality of battery cells 20. The battery cells 20 are assembled in the receiving cavity. During the operation of the battery pack 100, the cold plate 11 cools the battery cells 20.

[0072] The electrical equipment according to the third aspect embodiment of the present utility model includes: the battery pack 100 according to the second aspect embodiment of the present utility model described above.

[0073] By providing the battery pack 100 according to the second aspect embodiment of the present utility model, the electrical equipment according to the third aspect embodiment of the present utility model can improve the reliability during the operation of the electrical equipment.

[0074] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0075] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more unless otherwise specifically defined.

[0076] In the present utility model, unless otherwise clearly defined and limited, terms such as "installed", "connected", "joined", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or a communication connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal connection of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0077] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0078] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A box for a battery pack, characterized in that: include: Cold plate; A protection plate, the protection plate being arranged on one side of the cold plate in the first direction; A foam material piece is foamed and formed between the protection plate and the cold plate, and connects the cold plate and the protection plate.

2. The box according to claim 1, characterized in that: The protection plate is formed with a groove which is recessed away from the cold plate, and at least a portion of the foam material piece is formed in the groove.

3. The box according to claim 2, characterized in that: The box body further includes a sealing member, which extends in a ring shape along the circumference of the groove and is sealingly connected between the cold plate and the protection plate.

4. The box according to claim 3, characterized in that: The protective plate is also provided with a sealing groove opening toward the cold plate, the sealing groove is arranged around the groove, and the sealing member is arranged in the sealing groove.

5. The box according to claim 4, characterized in that: The sealing member is a foamed member, and the sealing member is foamed and formed between the inner wall of the sealing groove and the cold plate.

6. The box according to claim 4, characterized in that: The protective plate is provided with a fixing hole penetrating the protective plate along the first direction, the fixing hole is located in the sealing groove, and the box body further includes a fastener, and the fastener passes through the fixing hole and is connected to the cold plate.

7. The box according to any one of claims 2 to 6, characterized in that: The protective plate includes a first layer and a second layer stacked in the first direction, the first layer is arranged on the side of the second layer facing the foam material piece, the groove is formed in the first layer, the first layer is a continuous fiber material piece, and the second layer is a metal piece.

8. The box according to claim 7, characterized in that: The protective plate further includes a third layer, which is disposed on a side of the second layer facing away from the first layer, and is a continuous fiber material piece.

9. The box according to claim 1, characterized in that: It also includes a frame and an upper cover, wherein the frame has open openings on both sides in the first direction, the upper cover is arranged on the frame, the cold plate is connected to a side of the frame away from the upper cover, and the frame, the cold plate and the upper cover cooperate to define a receiving cavity for receiving a battery cell.

10. A battery pack, characterized in that: include: The casing according to any one of claims 1 to 9.

11. An electrical device, characterized in that: include: The battery pack according to claim 10.

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