Battery box and energy storage device

Abstract

The application discloses a battery box and an energy storage device. The battery box comprises a box body and a temperature component. The box body comprises an outer shell and a lap joint part. The outer shell is enclosed to form an opening. The lap joint part is connected with the inner wall of the outer shell and is located at the opening. The temperature component is lapped on the lap joint part and closes the opening. The temperature component is provided with a containing cavity for containing temperature material. The temperature component and the battery pack are attached to adjust the temperature of the battery pack. Compared with the prior art, the application sets the lap joint part at the opening of the box body, laps the temperature component on the lap joint part and closes the opening. The temperature adjustment of the battery pack is realized by the containing cavity in the temperature component. The lap joint part provides the installation position for the temperature component. Before the temperature component is installed, the temperature component can be placed on the lap joint part. The lap joint part supports the temperature component, so that manual support or support of the temperature component is not needed, so as to facilitate the fixed connection between the temperature component and the box body and simplify the installation steps.

Description

Technical Field

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

[0002] With the advancement of technology and the increase in energy demand, batteries are being used more and more widely in various devices and electric vehicles. As a core component of the battery system, the battery box not only houses the batteries themselves but also needs to have effective temperature management capabilities.

[0003] In existing battery box designs, temperature-controlled components are typically installed by direct welding or other methods to fix them to the inner wall of the box or other supporting structures. However, traditional welding techniques for temperature-controlled components often have certain problems. First, due to the complex structure between the outer shell and the inner wall of the box, it is difficult to ensure a completely flat weld surface when welding the temperature-controlled components, leading to inconsistent weld quality. Second, during the welding process, uneven stress concentration can easily occur at the connection between the temperature-controlled component and the box, which may affect the stability of the overall structure and even lead to damage or failure of the temperature-controlled component. Furthermore, the thermal stress that may be generated during the welding process in traditional techniques may also cause deformation of the box material, thereby affecting the sealing and reliability of the battery box. Utility Model Content

[0004] In view of the shortcomings of the prior art, this application provides a battery box and energy storage device that can simplify the installation process of temperature components and ensure the stability and sealing of the battery box.

[0005] To achieve the above objectives, this application adopts the following technical solution: A battery box includes a box body and a temperature component. The box body includes an outer shell and an overlapping portion. The outer shell surrounds and forms an opening. The overlapping portion is connected to the inner wall of the outer shell and is located at the opening. The temperature component overlaps the overlapping portion and closes the opening. The temperature component has a receiving cavity for accommodating temperature-sensitive material.

[0006] In one embodiment, the overlapping portion is connected to opposite sides of the housing along its width direction, and the overlapping portion extends along the length direction of the housing; and / or, the overlapping portion is connected to opposite sides of the housing along its length direction, and the overlapping portion extends along the width direction of the housing.

[0007] In one embodiment, the overlapping portion has a plurality of adhesive grooves formed on the side facing the temperature component, the adhesive grooves being used to hold adhesive.

[0008] In one embodiment, a gap is formed between two adjacent glue tanks, and the temperature component has a positioning groove that is disposed opposite to the gap, with the gap and the positioning groove engaging in a limiting fit.

[0009] In one embodiment, the spacer portion has a first fixing hole, the temperature component has a second fixing hole, and the battery box includes a first fixing member that passes through the first fixing hole and the second fixing hole to fix the temperature component and the box body.

[0010] In one embodiment, the temperature component has a plug-in portion that extends at least partially into the rubber groove.

[0011] In one embodiment, the depth of the adhesive groove is less than one-third of the thickness of the overlap.

[0012] In one embodiment, the battery box includes a second fixing member, the overlapping portion has a third fixing hole, the temperature component has a fourth fixing hole, and the second fixing member passes through the third fixing hole and the fourth fixing hole to fix the temperature component and the overlapping portion.

[0013] In one embodiment, the overlapping portion includes a main body and a fixing portion. The fixing portion is connected to the main body and protrudes from the main body. The fixing portion has the third fixing hole. The temperature component is connected to the fixing portion through the second fixing member, and the temperature component is bonded to the main body.

[0014] In one embodiment, the temperature component has a clearance groove formed at its position relative to the fixing part, and the fixing part is inserted into the clearance groove.

[0015] In one embodiment, the housing is formed along a horizontal plane in a first direction and a second direction. The temperature component is welded to the overlapping portion on opposite sides along the first direction and is bonded or riveted to the outer shell on opposite sides along the second direction.

[0016] This application also adopts the following technical solution to provide an energy storage device, including a battery box and a battery pack as described in any of the above embodiments, wherein the battery pack is disposed inside the battery box and is in contact with the temperature component.

[0017] The beneficial effects of this application are as follows: This application provides a battery box and energy storage device. The battery box includes a box body and a temperature component. The box body includes an outer shell and an overlapping portion. The outer shell is closed to form an opening, and the overlapping portion is connected to the inner wall of the outer shell and located at the opening. The temperature component overlaps with the overlapping portion and closes the opening. The temperature component has a receiving cavity for accommodating temperature-regulating materials. The temperature component and the battery pack are attached to each other to regulate the temperature of the battery pack. Compared with the prior art, this application provides an overlapping portion at the opening of the box body, and overlaps the temperature component with the overlapping portion and closes the opening. The temperature of the battery pack is regulated by utilizing the receiving cavity in the temperature component. The overlapping portion provides an installation position for the temperature component. Before installation, the temperature component can be placed on the overlapping portion, which supports the temperature component without the need for manual support or assistance, facilitating the subsequent fixed connection between the temperature component and the box body. The overlapping portion provides a flat connection surface, improving the connection quality between the box body and the temperature component and simplifying the installation steps. The energy storage device using this battery box makes it easier and faster to connect temperature components, effectively controls the battery pack's operating temperature, and significantly improves battery life and safety. Attached Figure Description

[0018] Figure 1 A schematic diagram of the structure of a battery box according to this application is shown; Figure 2 A schematic diagram of the structure of a box according to this application is shown; Figure 3 It shows Figure 2 Enlarged view of point A in the image; Figure 4 A cross-sectional schematic diagram of one type of housing according to this application is shown; Figure 5 It shows Figure 4 Enlarged view of point B in the image; Figure 6 It shows Figure 4 Enlarged view of point C in the image; Figure 7 Another structural schematic diagram of a battery box according to this application is shown; Figure 8 Another structural schematic diagram of a housing according to this application is shown; Reference numerals: 1. Box body; 11. Outer shell; 12. Overlapping part; 121. Glue groove; 122. Spacing part; 123. First fixing hole; 124. Third fixing hole; 13. Opening; 14. Main body; 15. Fixing part; 2. Temperature component; 21. Positioning groove; 22. Second fixing hole; 23. Fourth fixing hole; 24. Insertion part; 25. Clearance groove. Detailed Implementation

[0019] In this application, the terms "set up," "equipped with," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0020] The terms “center,” “longitudinal,” “lateral,” “length,” “width,” “thickness,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” “radial,” and “circumferential” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0021] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0022] See Figure 1 This application provides an energy storage device, including a battery box and a battery pack. The battery pack is housed within the battery box to ensure safety and stability. The battery box can be used in various application scenarios, such as electric vehicles and energy storage power stations, ensuring that the battery pack is not affected by the external environment during transportation and use, thus extending its service life.

[0023] See Figure 1 and Figure 2 The battery box includes a housing 1 and a temperature control component 2. The housing 1 includes an outer shell 11 and an overlapping portion 12. The outer shell 11 encloses an opening 13, and the overlapping portion 12 is connected to the inner wall of the outer shell 11 and located at the opening 13. The temperature control component 2 overlaps with the overlapping portion 12 and closes the opening 13. The temperature control component 2 has a cavity for accommodating temperature-regulating materials. The temperature control component 2 is attached to the battery pack to regulate the temperature of the battery pack.

[0024] In practical applications, the housing 1 typically has an open structure at both the top and bottom along its height. The opening at the bottom of the housing 1 is designated as opening 13. The overlapping part 12 is an annular flange structure, with one end fixedly connected to the inner wall of the outer casing 11 by welding or integral molding, and the other end located at opening 13 of the outer casing 11 for overlapping with the temperature component 2. After the temperature component 2 overlaps at the overlapping point, it closes the opening 13, allowing the battery pack to be placed into the housing 1 from the other opening and come into contact with the temperature component 2, thereby achieving the effect of regulating the temperature of the battery pack.

[0025] The overlapping part 12 provides a support position for the temperature component 2. When the housing 1 and the temperature component 2 are fixed together by welding, the overlapping part 12 can prevent stress damage to the housing 1 caused by the high temperature of welding, and at the same time provide a flat welding surface to improve the welding quality.

[0026] The temperature component 2 has a plate-like structure, which fits tightly against the overlapping part 12. The temperature component 2 has an internal cavity for accommodating the temperature-sensitive material. The temperature-sensitive material can be a coolant. The temperature component 2 also includes an inlet and an outlet connecting the cavity to facilitate efficient flow of the coolant within the cavity and remove heat from the battery pack.

[0027] It should be noted that the temperature-regulating material can not only use coolant to cool the battery pack, but also other materials to heat the battery pack, such as heating film. This application does not limit this.

[0028] Compared to existing technologies, this application provides an overlapping portion 12 at the opening 13 of the housing 1, and attaches the temperature component 2 to this overlapping portion 12 while closing the opening 13. The temperature of the battery pack is regulated using the receiving cavity within the temperature component 2. The overlapping portion 12 provides a mounting position for the temperature component 2. Before installation, the temperature component 2 can be placed on the overlapping portion 12, which provides support, eliminating the need for manual support or assistance. This facilitates subsequent fixing of the temperature component 2 to the housing 1. The overlapping portion 12 provides a flat connection surface, improving the connection quality between the housing and the temperature component 2 and simplifying the installation process. With this structure, the connection of the temperature component 2 is more convenient and faster, the battery pack operating temperature is effectively controlled, and battery life and safety are significantly improved.

[0029] See again Figure 2 The overlapping portion 12 is connected to the opposite sides of the outer shell 11 along its width direction, and the overlapping portion 12 extends along the length direction of the outer shell 11.

[0030] In practical applications, the overlapping portion 12 can be connected to opposite sides of the outer casing 11 along its width direction, that is, as shown in the figure. Figure 2Specifically, the overlapping portion 12 consists of two parallel straight flanges on the left and right sides of the inner wall of the outer casing 11, respectively, forming a symmetrical layout. The overlapping portion 12 extends along the length direction of the outer casing 11, so that the length direction of the overlapping portion 12 is consistent with the length direction of the outer casing 11, which can provide a continuous and stable support structure for the temperature component 2.

[0031] The temperature component 2 can be made into a rectangular plate shape, with its two side edges respectively fitting into two overlapping portions 12, and can be fixed by welding or other connection methods such as bolts. The temperature component 2 has a receiving cavity inside to accommodate and guide the flow of coolant.

[0032] This application provides overlapping portions 12 on opposite sides along the width of the outer casing 11 and extends along its length. This arrangement results in a longer overlapping portion 12 and a larger contact area between the overlapping portion 12 and the temperature component 2, improving the installation stability and sealing effect of the temperature component 2. This structure facilitates the disassembly and maintenance of the temperature component 2 and ensures tight contact between the housing cavity and the battery pack, effectively improving cooling efficiency and enhancing the heat dissipation and safety performance of the battery box.

[0033] In one embodiment, the overlapping portion 12 can also be connected to opposite sides of the housing 11 along its length direction, and the overlapping portion 12 extends along the width direction of the housing 11. Specifically, the overlapping portion 12 can also overlap with, for example, Figure 2 The front and rear sides of the inner wall of the housing 11 are placed and extend along the width direction of the housing 11. The opposite sides of the temperature component 2 are connected to the overlapping part 12, which can also achieve a similar effect as described above.

[0034] See Figure 3 The overlapping portion 12 has a plurality of adhesive grooves 121 formed on the side facing the temperature component 2, and the adhesive grooves 121 are used to place adhesive.

[0035] In practical applications, the overlapping part 12 and the temperature component 2 can be bonded by adhesive. Adhesive bonding is simple to operate, reduces the requirements for assembly accuracy, reduces reliance on traditional mechanical connectors such as bolts and welding, and improves production efficiency.

[0036] Specifically, the overlapping portion 12 has multiple adhesive grooves 121 spaced apart along its length on the side surface facing the temperature component 2. The adhesive grooves 121 are parallel and evenly distributed rectangular grooves, and their cross-sections can be semi-circular or rectangular or other shapes, so as to accommodate a sufficient amount of adhesive and ensure that the contact area between the overlapping portion 12 and the temperature component 2 can achieve multiple seals and a firm bond when they are attached to the temperature component 2.

[0037] During assembly, first fill both the ungrooved area of ​​the overlap 12 and the adhesive groove 121 with high-temperature resistant sealant or structural adhesive. Then, align the temperature component 2 with the overlap 12, pressing the temperature component 2 firmly against the overlap 12. The adhesive in the adhesive groove 121 is squeezed and spread, forming multiple sealing bands. After the adhesive cures, a strong bond and seal are formed between the temperature component 2 and the overlap 12.

[0038] This application achieves multiple seals and multiple points of bonding between the temperature component 2 and the overlapping part 12 by providing multiple adhesive grooves 121 on the surface of the overlapping part 12. This not only improves the strength and vibration resistance of the connection, but also significantly enhances the sealing effect, effectively prevents coolant leakage, and enhances the safety and durability of the battery box.

[0039] See Figure 4 and Figure 5 A spacer 122 is formed between two adjacent glue tanks 121, and a positioning groove 21 is formed opposite to the spacer 122. The spacer 122 and the positioning groove 21 are matched in a limiting manner.

[0040] In practical applications, the surface of the temperature component 2 near the overlapping portion 12 can be precisely provided with positioning grooves 21 that correspond one-to-one with the spacer portion 122, according to the positions of the glue groove 121 and the spacer portion 122 of the overlapping portion 122. The width and depth of the positioning grooves 21 match the spacer portion 122, ensuring that during assembly, the spacer portion 122 can be inserted into and embedded in the positioning grooves 21 of the temperature component 2, achieving a limiting fit between the spacer portion 122 and the positioning grooves 21.

[0041] During assembly, adhesive is first filled into both the ungrooved portion of the overlap 12 and the glue groove 121. Then, the temperature component 2 is moved along the overlap 12, aligning and fitting its positioning groove 21 with each of the spacers 122. After the spacers 122 are inserted into the positioning grooves 21, they effectively restrict the movement of the temperature component 2, achieving precise positioning and preventing misalignment during assembly. Simultaneously, the adhesive is compacted within the glue groove 121, forming multiple seals and bonds with the temperature component 2. The adhesive can be a sealant or similar material.

[0042] This application improves the assembly accuracy and stability between the overlapping part 12 and the temperature component 2 by providing a spacer 122 in the overlapping part 12 and a positioning groove 21 in the temperature component 2, and by limiting the fit between the two, thus preventing misalignment and slippage, and further optimizing the sealing structure and connection strength.

[0043] See again Figure 3 The spacer 122 has a first fixing hole 123, the temperature component 2 has a second fixing hole 22, and the battery box includes a first fixing member that passes through the first fixing hole 123 and the second fixing hole 22 to fix the temperature component 2 and the box body 1.

[0044] In practical applications, each spacer 122 of the overlapping portion 12 is provided with a first fixing hole 123. The first fixing hole 123 is a through hole, and preferably its diameter is adapted to the diameter of the first fixing member. In each positioning groove 21 of the temperature component 2, a second fixing hole 22 is provided at a position corresponding to the spacer 122. The second fixing hole 22 is also a through hole, and its position is coaxially arranged with the first fixing hole 123 on the spacer 122 to ensure smooth alignment during assembly.

[0045] During assembly, adhesive is first filled into both the ungrooved portion 12 and the glue groove 121, and the positioning groove 21 of the temperature component 2 is precisely aligned and inserted into the spacer portion 122. Then, the first fastener is sequentially passed through the second fixing hole 22 of the temperature component 2 and the first fixing hole 123 of the spacer portion 122, and the temperature component 2 is securely fixed to the overlapping portion 12 of the housing 1 using mechanical connection methods (such as thread tightening, riveting, etc.). The first fastener can be a screw, rivet, or other fastener.

[0046] With this configuration, the overlap 12 and the temperature component 2 not only achieve adhesive sealing and limiting fit, but also achieve mechanical reinforcement through the first fastener, which greatly improves the connection strength and vibration resistance between the temperature component 2 and the housing 1, and prevents connection failure caused by adhesive aging under long-term use or extreme working conditions.

[0047] See Figure 6 The temperature component 2 has a plug-in portion 24, which at least partially extends into the glue tank 121.

[0048] In practical applications, the insertion part 24 is a raised strip-shaped structure provided along the length or width of the temperature component 2, and its shape and size match the glue groove 121 on the overlapping part 12. The width of the insertion part 24 is slightly smaller than the width of the glue groove 121 to ensure that the insertion part 24 can be smoothly inserted into the glue groove 121 during assembly, and to leave space for filling adhesive.

[0049] During assembly, adhesive is first filled into both the ungrooved portion of the overlap 12 and the glue groove 121. Then, the temperature component 2 is aligned with the overlap 12 and moved so that the insertion part 24 at least partially extends into the glue groove 121. The insertion of the insertion part 24 not only enhances the mechanical interlocking force between the temperature component 2 and the housing 1, but also increases the bonding area, improving the strength and sealing performance of the connection. Simultaneously, the presence of the insertion part 24 further prevents the temperature component 2 from detaching or shifting after the adhesive has cured, enhancing the durability and safety of the overall structure.

[0050] In one embodiment, the depth of the adhesive groove 121 is less than one-third of the thickness of the overlap 12. This embodiment limits the structural dimensions of the adhesive groove 121 to ensure both the overall strength and sealing effect of the overlap 12.

[0051] Specifically, the overall thickness of the overlapping portion 12 is T, and the adhesive groove 121 is formed on the surface of the overlapping portion 12, with its depth d designed as: d < T / 3. That is, the depth of the adhesive groove 121 is less than one-third of the thickness of the overlapping portion 12. For example, if the thickness of the overlapping portion 12 is 9mm, the depth of the adhesive groove 121 is preferably 2.5mm, and the maximum is no more than 3mm.

[0052] This structural design ensures that after the glue groove 121 is created on the overlap 12, the remaining material thickness still meets the structural strength requirements, and the load-bearing capacity and deformation resistance of the overlap 12 will not be weakened due to excessive depth of the glue groove 121. Simultaneously, the moderate depth of the glue groove 121 can accommodate a sufficient amount of adhesive, ensuring an effective seal and bond between the insertion part 24 of the temperature component 2 and the overlap 12. During actual assembly, the insertion part 24 of the temperature component 2 is inserted into the glue groove 121, making full contact with the adhesive within the glue groove 121, achieving both reliable positioning and ensuring sealing performance. The shallow glue groove 121 structure also facilitates the overflow and cleaning of excess adhesive, preventing excessive adhesive buildup that could affect assembly accuracy.

[0053] See Figure 7 The battery box includes a second fixing member, the overlapping part 12 has a third fixing hole 124, the temperature component 2 has a fourth fixing hole 23, and the second fixing member passes through the third fixing hole 124 and the fourth fixing hole 23 to fix the temperature component 2 and the overlapping part 12.

[0054] In practical applications, the overlapping portion 12 is provided with a third fixing hole 124, and the temperature component 2 is provided with a fourth fixing hole 23 corresponding to the position of the third fixing hole 124. The third fixing hole 124 and the fourth fixing hole 23 can be through holes, and the specific size can be selected according to actual needs. During assembly, the insertion portion 24 of the temperature component 2 is inserted into the glue groove 121 of the overlapping portion 12, and the third fixing hole 124 and the fourth fixing hole 23 are aligned. Subsequently, a second fastener is inserted through the third fixing hole 124 and the fourth fixing hole 23 to mechanically connect the temperature component 2 to the overlapping portion 12. The second fastener can be a bolt, rivet, or other structure.

[0055] This application forms a dual connection structure between the temperature component 2 and the overlapping part 12 by cooperating with the second fastener and the fixing hole: on the one hand, the adhesive in the glue groove 121 provides sealing and initial bonding; on the other hand, the second fastener provides mechanical clamping force, which effectively prevents the temperature component 2 from loosening or shifting due to environmental vibration, temperature changes and other factors, thereby improving the overall structural reliability and service life of the battery box.

[0056] It should be noted that if the overlapping part 12 is provided with a glue groove 121, the third fixing hole 124 can be the same structure as the first fixing hole 123. If the overlapping part 12 is not provided with a glue groove 121, that is, if the overlapping part 12 is not provided with a spacer 122, the third fixing hole 124 and the first fixing hole 123 are different structures.

[0057] See Figure 8 The overlapping part 12 includes a main body part 14 and a fixing part 15. The fixing part 15 is connected to the main body part 14 and protrudes from the main body part 14. The fixing part 15 has a third fixing hole 124. The temperature component 2 is connected to the fixing part 15 through a second fastener, and the temperature component 2 is bonded to the main body part 14.

[0058] In practical applications, the overlapping part 12 includes a main body 14 and a fixing part 15. The main body 14 is the main part of the overlapping part 12 and is used to bond, rivet, or weld with the temperature component 2. The fixing part 15 is integrally formed with the main body 14 or connected by welding, riveting, or other methods, and protrudes from the main body 14 toward the temperature component 2, which can be a boss structure. The fixing part 15 has a third fixing hole 124, the size of which is adapted to the second fixing member. The temperature component 2 has a fourth fixing hole 23 corresponding to the third fixing hole 124. The second fixing member is inserted between the two holes and tightened or riveted to achieve a mechanical connection between the temperature component 2 and the fixing part 15. At the same time, the main body 14 and the temperature component 2 are bonded together with adhesive.

[0059] Through the above structural design, the temperature component 2 is mechanically fixed to the fixing part 15 of the overlapping part 12 by the second fastener, and at the same time firmly bonded to the main body part 14 by adhesive, thus achieving double fixation. The protruding structure of the fixing part 15 not only facilitates the installation and positioning of the temperature component 2, but also prevents adhesive from entering the third fixing hole 124, thereby improving the connection strength and durability.

[0060] See again Figure 5 The temperature component 2 has a clearance groove 25 formed at the position of the fixing part 15, and the fixing part 15 is inserted into the clearance groove 25.

[0061] In practical applications, the fixing part 15 is inserted into the relief groove 25 on the insertion part 24 of the temperature component 2, so that the fixing part 15 and the temperature component 2 fit tightly together. At this time, the third fixing hole 124 on the fixing part 15 is naturally aligned with the fourth fixing hole 23 on the temperature component 2, which facilitates the insertion and mechanical connection of the second fastener. The remaining part of the insertion part 24 is bonded to the main body 14 of the overlapping part 12 with adhesive to achieve sealing and bonding.

[0062] The design of the clearance groove 25 allows the fixing part 15 to be partially or completely embedded in the insertion part 24 of the temperature component 2, ensuring the stability of the mechanical connection and avoiding interference from the fixing part 15 on the normal insertion and positioning of the temperature component 2, making the overall structure more compact and aesthetically pleasing. Simultaneously, the clearance groove 25 can also serve as a limiting structure, standardizing the installation position of the temperature component 2 and improving assembly efficiency and consistency.

[0063] In one embodiment, the housing 1 is formed along a horizontal plane in a first direction and a second direction. The temperature component 2 is welded to the overlapping portion 12 on opposite sides along the first direction and is bonded or riveted to the outer shell 11 on opposite sides along the second direction.

[0064] In practical applications, the housing 1 is typically a rectangular structure with a first direction (e.g., width) and a second direction (e.g., length) defined along the horizontal plane. The overlapping portion 12 can be positioned along the first direction of the housing 1. The temperature component 2 can be welded to the overlapping portion 12 on opposite sides along the first direction, while the other opposite sides are bonded to the outer shell 11. In conventional technology, the temperature component 2 is usually welded around its perimeter. This can cause localized bulging of the temperature component 2 during welding, resulting in gaps between the temperature component 2 and the battery pack contact surface, affecting the temperature regulation effect. To avoid this, this application only welds the opposite sides of the temperature component 2, while the other opposite sides can be bonded or riveted. This prevents the temperature component 2 from bulging during welding, ensuring a flat surface and a tighter fit between the temperature component 2 and the battery pack.

[0065] It should be noted that the overlapping part 12 can also be set in the second direction of the box body 1, or the overlapping part 12 can be set in both the first and second directions of the box body 1. However, the temperature component 2 is welded to the overlapping part 12 in one direction to avoid the situation of arching when the temperature component 2 is welded.

[0066] Furthermore, 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 number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0067] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0068] The above description is only a specific embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A battery box, characterized in that, include: The enclosure includes an outer shell and an overlapping portion, the outer shell forming an opening, and the overlapping portion being connected to the inner wall of the outer shell and located at the opening; A temperature component is attached to the overlapping portion and closes the opening. The temperature component has a receiving cavity for accommodating temperature material.

2. The battery box according to claim 1, characterized in that, The overlapping portion is connected to opposite sides of the outer shell along its width direction, and the overlapping portion extends along the length direction of the outer shell; and / or, the overlapping portion is connected to opposite sides of the outer shell along its length direction, and the overlapping portion extends along the width direction of the outer shell.

3. The battery box according to claim 1, characterized in that, The overlapping portion has multiple adhesive grooves on the side facing the temperature component, and the adhesive grooves are used to hold adhesive.

4. The battery box according to claim 3, characterized in that, A gap is formed between two adjacent glue tanks, and the temperature component has a positioning groove that is opposite to the gap. The gap and the positioning groove are matched in a limiting manner.

5. The battery box according to claim 4, characterized in that, The spacer portion has a first fixing hole, the temperature component has a second fixing hole, and the battery box includes a first fixing member that passes through the first fixing hole and the second fixing hole to fix the temperature component and the box body.

6. The battery box according to claim 3, characterized in that, The temperature component has a plug-in portion that extends at least partially into the rubber groove.

7. The battery box according to claim 3, characterized in that, The depth of the adhesive groove is less than one-third of the thickness of the overlap.

8. The battery box according to any one of claims 1 to 7, characterized in that, The battery box includes a second fixing member, the overlapping part has a third fixing hole, the temperature component has a fourth fixing hole, and the second fixing member passes through the third fixing hole and the fourth fixing hole to fix the temperature component and the overlapping part.

9. The battery box according to claim 8, characterized in that, The overlapping part includes a main body and a fixing part. The fixing part is connected to the main body and protrudes from the main body. The fixing part has the third fixing hole. The temperature component is connected to the fixing part through the second fixing member, and the temperature component is bonded to the main body.

10. The battery box according to claim 9, characterized in that, The temperature component has a clearance groove formed at its position relative to the fixing part, and the fixing part is inserted into the clearance groove.

11. The battery box according to any one of claims 1 to 7, characterized in that, The housing is formed along a horizontal plane in a first direction and a second direction. The temperature component is welded to the overlapping portion on opposite sides along the first direction and is bonded or riveted to the outer shell on opposite sides along the second direction.

12. An energy storage device, characterized in that, Includes a battery box and a battery pack as described in any one of claims 1 to 11, wherein the battery pack is disposed inside the battery box and is in contact with the temperature component.

Images