Shell assembly and power storage device

Abstract

The embodiment of the utility model provides a shell assembly, an electricity storage device and electric equipment. The shell assembly comprises a shell and a protective cover. The shell comprises a shell body, a pole and a protective wall. The pole is installed on the shell body, and the protective wall is connected with the shell body and arranged on the peripheral side of the pole. The protective wall includes a first sidewall and a second sidewall. The first side wall comprises a first sub-wall and a second sub-wall which are connected with each other. The first sub-wall is located on the top of the first side wall, and the second sub-wall is located on the lower portion of the first sub-wall. The thickness of the first sub-wall is smaller than that of the second sub-wall. A first clamping part is arranged on one side, facing the pole, of the first sub-wall. And the protective cover is rotatably connected with the second side wall and surrounds at least part of the pole. The protective cover further comprises a second clamping part, and the first clamping part is detachably connected with the second clamping part. According to the technical scheme provided by the embodiment of the invention, the protective cover can be prevented from falling off from the protective position of the pole through the clamping matching of the first clamping part and the second clamping part.

Description

Technical Field

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

[0002] Energy storage devices, such as batteries, are used in electrical equipment such as drones, electric vehicles, and power tools. They are connected to the electrical equipment through terminals.

[0003] Typically, protective covers are installed on the terminals to seal and insulate them, preventing foreign objects from falling into the terminals or short-circuiting them by contact with foreign objects or other parts of the battery, thus ensuring the safety of the electrical equipment.

[0004] In related technologies, the protective cover is prone to falling off the protective position of the pole during transportation and use, resulting in the pole being exposed and posing a safety hazard. Utility Model Content

[0005] In view of this, embodiments of this application provide a housing assembly and an energy storage device, which aim to solve the problem that the protective cover of the pole post is easy to fall off.

[0006] In a first aspect, embodiments of this application provide a housing assembly. The housing assembly includes a housing and a protective cover. The housing includes a housing body, a pole, and a protective wall. The pole is mounted on the housing body, and the protective wall is connected to the housing body and disposed around the pole. The protective wall includes a first sidewall and a second sidewall. The first sidewall includes a first sub-wall and a second sub-wall connected to each other. The first sub-wall is located at the top of the first sidewall, and the second sub-wall is located at the bottom of the first sub-wall. The thickness of the first sub-wall is less than the thickness of the second sub-wall. A first engaging portion is provided on the side of the first sub-wall facing the pole. The protective cover is rotatably connected to the second sidewall and surrounds at least a portion of the pole. The protective cover also includes a second engaging portion, and the first engaging portion and the second engaging portion are detachably connected.

[0007] In conjunction with the first aspect described above, in one possible implementation, the second sidewall is provided with a first mounting position and a second mounting position arranged opposite to each other, and the protective cover further includes a first pivot shaft and a second pivot shaft. The first pivot shaft is mounted on the first mounting position, and the second pivot shaft is mounted on the second mounting position. The first mounting position is a groove, the width of the opening of the groove being smaller than the diameter of the first pivot shaft, and the second mounting position is a channel; and / or, both the first mounting position and the second mounting position are channels.

[0008] In conjunction with the first aspect described above, in one possible implementation, in the extending directions of the first pivot shaft and the second pivot shaft, the first mounting position and the second mounting position are located on opposite sides of the pole post, and the second mounting position and the first snap-fit ​​portion are located on the same side of the pole post.

[0009] In conjunction with the first aspect described above, in one possible embodiment, the protective cover further includes a top plate portion, with a first pivot axis and a second pivot axis located on opposite sides of the top plate portion, respectively. Along the rotation axes of the first and second pivot axes, the opposite sides of the top plate portion have a first gap D3 with the end faces of the first and second mounting positions, respectively. D3 satisfies: 0.5 mm ≤ D3 ≤ 3 mm.

[0010] In conjunction with the first aspect described above, in one possible implementation, the thickness of the first sub-wall gradually increases along the direction approaching the second sub-wall.

[0011] In conjunction with the first aspect above, in one possible implementation, along the direction from the bottom end to the top end of the first sub-wall, the distance from the first snap-fit ​​portion to the top end of the first sub-wall is D4, and the distance between the bottom end and the top end of the first sub-wall is D5, where D4 and D5 satisfy: 0.4≤D4 / D5≤0.6.

[0012] In conjunction with the first aspect described above, in one possible implementation, the protective wall further includes a second sidewall. The first sidewall includes a connecting end that connects to the second sidewall and a free end that is arranged opposite to the connecting end, the free end being closer to the first latching portion than the connecting end. The distance from the first latching portion to the free end is D1, and the distance from the free end to the connecting end is D2. D1 and D2 satisfy: 1 / 8 ≤ D1 / D2 ≤ 1 / 3.

[0013] In conjunction with the first aspect described above, in one possible embodiment, the protective cover further includes a first side plate portion. A second snap-fit ​​portion is disposed on the first side plate portion, the first side plate portion including a side facing the first sidewall, the side including a guide slope. The guide slope extends from the bottom end of the first side plate portion to the top end of the first side plate portion. Along the direction from the top end of the first side plate portion to the bottom end of the first side plate portion, the guide slope is inclined toward the direction of the first side plate portion away from the first sidewall.

[0014] In conjunction with the first aspect described above, in one possible implementation, a stepped surface is formed between the first sub-wall and the second sub-wall. When the first engaging portion engages with the second engaging portion, a gap exists between the bottom of the first side plate portion and the stepped surface.

[0015] In conjunction with the first aspect described above, in one possible implementation, the first engaging portion is a locking block, and the second engaging portion is a locking groove. The surface of the locking block facing the locking groove is an inclined surface. Along the direction from the top end to the bottom end of the first sub-wall, the inclined surface slopes towards the locking groove.

[0016] Secondly, embodiments of this application also provide an energy storage device, which includes the housing assembly described in any of the above embodiments.

[0017] The terminals installed on the casing are usually located outside the casing and require separate protective covers to isolate them, in order to prevent foreign objects from falling in or the terminals from coming into contact with foreign objects or other parts of the battery, which could cause short circuits and safety hazards.

[0018] In related technologies, the protective cover and the housing are not securely fitted. During transportation and use, the protective cover is prone to falling off the protective position of the pole, exposing the pole and causing safety hazards.

[0019] According to the technical solution provided in the embodiments of this application, the first sub-wall of the protective wall is provided with a first snap-fit ​​portion, and the protective cover is correspondingly provided with a second snap-fit ​​portion. Through the snap-fit ​​engagement of the first and second snap-fit ​​portions, the protective cover can be prevented from falling off the protective position of the pole post. Furthermore, the thickness of the first sub-wall is reduced. During installation, when the first and second snap-fit ​​portions are snapped together, or during disassembly, when the first and second snap-fit ​​portions are separated, the first sub-wall can undergo a certain degree of deformation, facilitating the installation and removal of the protective cover. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the drawings only show some embodiments of this application and should not be considered as a limitation of the scope. It should also be understood that the same or similar reference numerals are used in the drawings to represent the same or similar elements. Furthermore, it should be understood that the drawings are merely schematic, and the dimensions and scale of the elements in the drawings are not necessarily precise.

[0021] Figure 1 This is a schematic diagram of the structure of an energy storage device according to an embodiment of this application.

[0022] Figure 2 for Figure 1 A magnified schematic diagram of the local structure at point A.

[0023] Figure 3 This is a schematic diagram of the structure of a protective cover according to an embodiment of this application.

[0024] Figure 4 This is a right view of a housing assembly according to an embodiment of this application.

[0025] Figure 5 for Figure 4 A magnified view of the local structure at point B.

[0026] Figure 6 for Figure 2 A schematic diagram of the structure after the protective cover has been removed.

[0027] Figure label:

[0028] 100. Housing assembly;

[0029] 10. Housing; 11. Pole post; 12. Protective wall; 121. First side wall; 1211. First sub-wall; 1212. Second sub-wall; 1213. Free end; 1214. Connecting end; 122. First mounting position; 1220. Groove; 1221. Opening; 123. Second mounting position; 124. Second side wall; 1241. Receiving groove; 13. First snap-fit ​​part; 130. Snap-fit ​​block; 131. Inclined surface; 14. Stepped surface; 15. Boss;

[0030] 20. Protective cover; 21. Second snap-fit ​​part; 210. Slot; 22. First pivot shaft; 23. Second pivot shaft; 24. First side plate part; 241. Side side; 2411. Guide slope; 25. Top plate part; 26. Second side plate part; 27. Third side plate part;

[0031] 1000. Energy storage device. Detailed Implementation

[0032] The embodiments of this application will be further described in detail below with reference to the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to illustrate the principles of this application by way of example, but should not be used to limit the scope of this application. This application can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0033] Energy storage devices can include start-stop battery packs, battery modules, energy storage modules, and power battery packs. Taking a start-stop pack as an example, the terminals of the start-stop pack are electrical connectors that connect multiple internal battery cells and also serve as a bridge between the start-stop pack and the external circuitry. Used in automobiles, two-wheeled vehicles, and other electrical equipment, they are typically low-voltage battery packs (12V or 48V, etc.) that provide power for vehicle start-stop or lighting, and are connected to the electrical circuitry of the equipment via the terminals.

[0034] Taking a start-stop battery pack as an example, it includes terminals, a housing, and multiple battery cells and tab supports housed within the housing. The tab support includes a support body and multiple electrical connectors, with the support body being integrally formed with the multiple electrical connectors. The battery cells are supported on the support body, and the battery cell's tabs are electrically connected to the electrical connectors on the tab support. The terminals are electrically connected to the electrical connectors and the battery cell's tabs through connecting parts.

[0035] To facilitate connection to electrical equipment, the terminals typically extend at least partially out of the energy storage device's casing. Generally, a protective cap is installed to seal and insulate the terminals, preventing foreign objects from falling into the terminals and causing contamination or corrosion, or short circuits from contact with foreign objects or other parts of the battery, thus ensuring the safety of the electrical equipment.

[0036] In related technologies, the protective cover and the housing do not fit securely. During transportation and use, the protective cover can easily detach from the protective position of the pole, exposing the pole and causing safety hazards.

[0037] To address the aforementioned problems in related technologies, this application provides a housing assembly, an energy storage device, and an electrical appliance. The following is a detailed description... Figures 1 to 6 The present application will describe the housing assembly and energy storage device provided in the embodiments.

[0038] It should be understood that there are many ways to implement this application, and it should not be construed as being limited to the embodiments described herein. The embodiments described herein are only for a more thorough and clear understanding of this application.

[0039] For ease of description, the width direction of the shell is indicated by arrow X in the figure; the length direction of the shell, which is perpendicular to the width direction, is indicated by arrow Y in the figure; the thickness direction of the shell, which is perpendicular to both the length and width directions, is indicated by arrow Z in the figure. In this article, along the Z direction, the direction pointed to by the arrow is the top (upper) part, and the direction away from the direction pointed to by the arrow is the bottom (lower) part.

[0040] Exemplary housing components

[0041] refer to Figure 2 and Figure 4 In a first aspect, embodiments of this application provide a housing assembly 100. The housing assembly 100 may include a housing 10 and a protective cover 20. The housing 10 may include a housing body, a pole post 11, and a protective wall 12. The pole post 11 is mounted on the housing body, and the protective wall 12 is connected to the housing body and arranged around the pole post 11.

[0042] For example, the housing 10 and the protective wall 12 can be integrally formed. For instance, the housing 10 and the protective wall 12 can be integrally injection molded, simplifying the assembly process. Of course, the housing 10 and the protective wall 12 can also be separately formed and then assembled together.

[0043] For example, the pole post 11 can be located in the corner region of the housing body. Here, the corner region refers to the area on the housing body where two adjacent edges are close together and tend to intersect. Of course, the pole post 11 can be placed in other suitable locations on the housing body according to the needs of specific application scenarios, and this application does not limit this.

[0044] For example, the area on the housing body where the pole post 11 is provided may have a boss 15, and the pole post 11 may extend at least partially from the boss 15. Of course, the area on the housing body where the pole post 11 is provided may also have other structures. For example, the boss 15 may not be provided, and the pole post 11 may extend directly and partially from the housing body.

[0045] The protective wall 12 may include a first sidewall 121 and a second sidewall 124.

[0046] The first sidewall 121 may include a first sub-wall 1211 and a second sub-wall 1212 connected to each other. The first sub-wall 1211 is located at the top of the first sidewall 121, and the second sub-wall 1212 is located at the bottom of the first sub-wall 1211. The thickness of the first sub-wall 1211 is less than the thickness of the second sub-wall 1212, and the first sub-wall 1211 has a first snap-fit ​​portion 13 on the side facing the pole post 11.

[0047] For example, the first sidewall 121 may be an insulating protective wall 12 extending from a wall of the housing 10, and form a second sidewall 124 with a portion of the wall of that wall.

[0048] Of course, the first sidewall 121 can also be formed on the housing 10 in other ways. For example, the first sidewall 121 can also be formed by recessing the wall of the housing 10 along the width or length direction of the housing 10, and correspondingly, the second sidewall 124 can also be formed by recessing the wall of the housing 10 along the width or length direction of the housing 10. Alternatively, the first sidewall 121 and the second sidewall 124 can be formed by recessing or protruding the housing 10 along the thickness direction of the housing 10.

[0049] The protective cover 20 is rotatably connected to the second sidewall 124. The protective cover 20 surrounds at least a portion of the pole post 11 and includes a second snap-fit ​​portion 21. The first snap-fit ​​portion 13 and the second snap-fit ​​portion 21 are detachably connected, for example, by snap-fit ​​engagement.

[0050] For example, the protective cover 20 covers the pole post 11 and cooperates with the protective wall 12 to at least partially surround 50% to 99% of the length of the portion of the pole post 11 extending out of the housing 10, such as 60%, 70%, 80% or 90%.

[0051] According to the technical solution provided in the embodiments of this application, the first sub-wall 1211 of the protective wall 12 is provided with a first snap-fit ​​portion 13, and the protective cover 20 is correspondingly provided with a second snap-fit ​​portion 21. Through the snap-fit ​​engagement of the first snap-fit ​​portion 13 and the second snap-fit ​​portion 21, the protective cover 20 can be prevented from falling off the protective position of the pole post 11. Furthermore, the thickness of the first sub-wall 1211 is reduced. During installation, when the first snap-fit ​​portion 13 and the second snap-fit ​​portion 21 are snapped together, or during disassembly, when the first snap-fit ​​portion 13 and the second snap-fit ​​portion 21 are separated, the first sub-wall 1211 can undergo a certain degree of deformation, facilitating the installation and disassembly of the protective cover 20.

[0052] refer to Figure 3 and Figure 5The second sidewall 124 may be provided with a first mounting position 122 and a second mounting position 123 arranged opposite to each other. The protective cover 20 may also include a first pivot 22 and a second pivot 23.

[0053] For example, the first mounting position 122 and the second mounting position 123 respectively receive the first pivot shaft 22 and the second pivot shaft 23. That is, the first pivot shaft 22 is mounted in the first mounting position 122, and the second pivot shaft 23 is mounted in the second mounting position 123.

[0054] For example, refer to Figure 5 A receiving groove 1241 may be provided on the second side wall 124, and the first mounting position 122 and the second mounting position 123 are provided on the two opposite groove walls of the receiving groove 1241.

[0055] For example, refer to Figure 5 The bottom of the receiving groove 1241 can be located on the same plane as 14 between the first sub-wall 1211 and the second sub-wall 1212, which facilitates molding.

[0056] Of course, the bottom of the receiving groove 1241 can also be located on different planes from the first sub-wall 1211 and the second sub-wall 1212.

[0057] In one example, the first mounting position 122 is a groove 1220, the width of the opening 1221 of the groove 1220 is smaller than the diameter of the first pivot shaft 22, and the second mounting position 123 is a channel. In addition, the channel can be a through hole, a blind hole, a countersunk hole, etc., without being limited in detail here.

[0058] The first mounting position 122 is a groove 1220, the opening of which allows the first pivot shaft 22 to pass through. When installing the protective cover 20, after installing the second pivot shaft 23 into the second mounting position 123, the first pivot shaft 22 can be conveniently installed into the first mounting position 122 through the opening 1221. When removing the protective cover 20, the first pivot shaft 22 can be removed first through the opening 1221 into the first mounting position 122, and then the second pivot shaft 23 can be removed. Therefore, it is convenient to install and remove the protective cover 20. In addition, the width of the opening 1221 into the first mounting position 122 is smaller than the diameter of the first pivot shaft 22, which can prevent the first pivot shaft 22 from slipping out of the first mounting position 122, thereby ensuring the installation reliability of the protective cover 20.

[0059] In an alternative example, both the first mounting position 122 and the second mounting position 123 are channels.

[0060] refer to Figure 2 and Figure 5In the extending directions of the first pivot shaft 22 and the second pivot shaft 23, the first mounting position 122 and the second mounting position 123 can be located on opposite sides of the pole post 11, and the second mounting position 123 and the first snap-fit ​​portion 13 can be located on the same side of the pole post 11.

[0061] When installing the protective cover 20, after installing the second pivot shaft 23 into the second mounting position 123, the first pivot shaft 22 can be conveniently installed into the first mounting position 122 through the opening 1221. Simultaneously, during the subsequent engagement of the first snap-fit ​​portion 13 and the second snap-fit ​​portion 123, the second pivot shaft 23 and the second mounting position 123 can serve as force-bearing points. When removing the protective cover 20, the first pivot shaft 22 can be removed first through the opening 1221 in the first mounting position 122. Then, using the second pivot shaft 23 and the second mounting position 123 as fulcrums, external force can be applied from the area diagonally opposite the protective cover 20 and the second pivot shaft 23 to separate the first snap-fit ​​portion 13 from the second snap-fit ​​portion 21. Then, the second pivot shaft 23 can be removed from the second mounting position 123. The fulcrum and force-bearing points are relatively far apart, saving effort. Furthermore, the second mounting position 123 is a closed blind hole, which can prevent the second pivot shaft 23 from falling off the second mounting position 123 when force is applied during the installation and removal of the protective cover 20.

[0062] refer to Figure 5 In one embodiment, the thickness of the first sub-wall 1211 gradually increases along the direction close to the second sub-wall 1212.

[0063] Along the direction close to the second sub-wall 1212, the thickness of the first sub-wall 1211 gradually increases, that is, the thickness of the first sub-wall 1211 gradually increases from top to bottom. In this way, it has appropriate strength while allowing deformation during the process of installing and removing the protective cover 20.

[0064] Next, refer to Figure 5 Along the direction from the bottom end to the top end of the first sub-wall 1211, the distance between the first snap-fit ​​part 13 and the top end of the first sub-wall 1211 is D4, and the distance between the bottom end and the top end of the first sub-wall 1211 is D5. D4 and D5 satisfy: 0.4≤D4 / D5≤0.6.

[0065] When the first locking part 13 is close to the top of the first sub-wall 1211, it is prone to detaching from the second locking part 21 under impact and vibration. When the first locking part 13 is far from the top of the first sub-wall 1211, the locking engagement with the second locking part 21 is difficult. Therefore, by controlling the ratio of D4 and D5 in the direction from the bottom to the top of the first sub-wall 1211, so that the first locking part 13 is located approximately in the middle of the first sub-wall 1211, the reliability of the locking can be guaranteed, while facilitating the locking engagement of the first locking part 13 and the second locking part 21.

[0066] For example, the first engaging portion 13 is located in the middle of the first sub-wall 1211 along the direction from the bottom end to the top end of the first sub-wall 1211. Here, the first engaging portion 13 being located in the middle of the first sub-wall 1211 along the direction from the bottom end to the top end of the first sub-wall 1211 means that it is located approximately at ±10% of the middle of the first sub-wall 1211.

[0067] From the bottom to the top of the first sub-wall 1211, the first snap-fit ​​part 13 is basically located in the middle of the first sidewall 121, which can better ensure the reliability of the snap-fit ​​while facilitating the snap-fit ​​cooperation between the first snap-fit ​​part 13 and the second snap-fit ​​part 21.

[0068] Continue to refer to Figure 5 The first sidewall 121 includes a connecting end 1214 that connects to the second sidewall 124 and a free end 1213 that is arranged opposite to the connecting end 1214. That is, the first sidewall 121 is connected to the second sidewall 124 through the connecting end 1214. The free end 1213 is closer to the first snap-fit ​​portion 13 than the connecting end 1214.

[0069] When the first snap-fit ​​portion 13 is closer to the connecting end 1214, it is also closer to the second pivot shaft 23, meaning it is closer to the fulcrum where force is applied during snap-fit. Therefore, a larger snap-fit ​​force is required during the snap-fit ​​process. Conversely, when the first snap-fit ​​portion 13 is closer to the free end 1213 and farther from the second mounting position 123, it is farther from the fulcrum where force is applied during snap-fit, requiring a smaller snap-fit ​​force and facilitating the installation of the protective cover 20.

[0070] In one example, the distance from the first snap-fit ​​portion 13 to the free end 1213 is D1, and the distance from the free end 1213 to the connecting end 1214 is D2. D1 and D2 satisfy: 1 / 8 ≤ D1 / D2 ≤ 1 / 3. For example, D1 / D2 can be 1 / 7, 1 / 6, 1 / 4, or 1 / 5, etc. That is, the first snap-fit ​​portion 13 is relatively close to the free end 1213, but maintains a suitable distance.

[0071] The distance between the first snap-fit ​​part 13 and the free end 1213 is controlled within a suitable range to avoid excessive distance, which would result in excessive snap-fit ​​force and make it difficult to install the protective cover 20. At the same time, the distance is also avoided to prevent the second snap-fit ​​part 21 from being too close to the edge of the protective cover 20, which would weaken its strength and cause damage. In this way, the strength of the snap-fit ​​structure is guaranteed while facilitating the installation of the protective cover 20.

[0072] Return to reference Figure 3The protective cover 20 also includes a top plate portion 25. A first pivot shaft 22 and a second pivot shaft 23 are located on opposite sides of the top plate portion 25. Along the rotation axis of the first pivot shaft 22 and the second pivot shaft 23, the opposite sides of the top plate portion 25 have a first gap D3 with the end face of the first mounting position 122 and the end face of the second mounting position 123, respectively, where 0.5 mm ≤ D3 ≤ 3 mm. For example, D3 can be 0.6 mm, 0.8 mm, 1 mm, 1.2 mm, 1.5 mm, 1.8 mm, 2 mm, 2.3 mm, 2.5 mm, or 2.8 mm, etc.

[0073] In some examples, 0.5mm ≤ D3 ≤ 1mm.

[0074] When the first gap is small, the first pivot shaft 22 and the second pivot shaft 23 are prone to contact and friction with the end faces of the first mounting position 122 and the second mounting position 123, respectively. Therefore, rotation is inconvenient, which in turn makes the installation and removal of the protective cover 20 difficult. The first gap D3 between the opposite sides of the top plate portion 25 and the end faces of the first mounting position 122 and the second mounting position 123 is controlled within a reasonable range to avoid a large distance affecting the sealing performance, while also avoiding a distance that is too small, making the installation and removal of the protective cover 20 difficult.

[0075] Continue to refer to Figure 3 The protective cover 20 also includes a first side plate portion 24, and a second snap-fit ​​portion 21 is disposed on the first side plate portion 24. Exemplarily, the first side plate portion 24 is connected to one side of the top plate portion 25.

[0076] In the installed state, the first side plate portion 24 includes a side surface 241 facing the first side wall 121. Exemplarily, the first side plate is located inside the first side wall 121, and the outer side surface 241 of the first side plate portion 24 faces the first side wall 121.

[0077] Side surface 241 includes a guide ramp 2411, which extends from the bottom end of the first side plate portion 24 to the top end of the first side plate portion 24, that is, the guide ramp 2411 is located at the lower part of side surface 241. Along the direction from the top end of the first side plate portion 24 to the bottom end of the first side plate portion 24, the guide ramp 2411 is inclined in the direction away from the first side wall 121 of the first side plate portion 24.

[0078] When the side surface 241 of the first side plate 24 is vertical, the installation resistance is relatively large, making it difficult to engage the first snap-fit ​​part 13 and the second snap-fit ​​part 21. The bottom of the side surface 241 of the first side plate 24 is configured as an inclined surface 131 that slopes towards the direction away from the first side wall 121. In this way, when installing the protective cover 20, the inclined surface 131 can guide the protective cover 20, allowing the first snap-fit ​​part 13 to gradually engage with the second snap-fit ​​part 21, facilitating the installation of the protective cover 20.

[0079] refer to Figure 5 When the protective cover 20 is closed, there is a gap D4 between the bottom of the first side plate portion 24 and the stepped surface 14. Exemplarily, this gap D4 satisfies the condition: 0.3 mm ≤ D4 ≤ 5 mm, for example, D4 ​​can be 0.5 mm, 0.8 mm, 1 mm, 1.2 mm, 1.5 mm, 2 mm, 3 mm, or 4 mm, etc. This avoids the gap D4 being too small to prevent jamming and friction, or too large to affect the sealing effect.

[0080] When installing the protective cover 20, the first side plate 24 may easily become stuck with the stepped surface 14, preventing the first locking part 13 and the second locking part 21 from being properly installed, thus affecting the locking effect. Furthermore, when removing the protective cover 20, the first side plate 24 may easily come into contact with and rub against the stepped surface 14, increasing the resistance to removal. A gap between the first side plate 24 and the stepped surface 14 can prevent the first side plate 24 from easily becoming stuck with the stepped surface 14 during installation of the protective cover 20, thus preventing the first locking part 13 and the second locking part 21 from being improperly installed. Simultaneously, it can prevent the first side plate 24 from easily coming into contact with and rubbing against the stepped surface 14 during removal, thus avoiding increased resistance to removal and making removal inconvenient.

[0081] refer to Figures 3 to 6 In some embodiments, the first latching portion 13 can be a latching block 130, and the second latching portion 21 can be a latching groove 210. The surface of the latching block 130 facing the latching groove 210 is an inclined surface 131, which is inclined towards the latching groove 210 along the direction from the top end to the bottom end of the first sub-wall 1211.

[0082] In an alternative embodiment, the first latching portion 13 may be a card slot 210, and the second latching portion 21 may be a card block 130.

[0083] When the face of the locking block 130 facing the slot 210 is vertical, the installation resistance is relatively large, making it difficult to engage the locking block 130 and the slot 210. When the face of the locking block 130 facing the slot 210 is inclined 131, the inclined surface 131 can guide the protective cover 20 during installation, allowing the slot 210 to gradually engage with the locking block 130, thus facilitating the installation of the protective cover 20.

[0084] In one example, the protective cover 20 may also include a first side plate portion 24, and a second snap-fit ​​portion 21 disposed on the first side plate portion 24. The first side plate portion 24 includes a side surface 241 facing the first side wall 121. The side surface 241 includes a guide slope 12411, which extends from the bottom end of the first side plate portion 24 to the top end of the first side plate portion 24. Along the direction from the top end of the first side plate portion 24 to the bottom end of the first side plate portion 24, the guide slope 2411 is inclined in the direction away from the first side wall 121 of the first side plate portion 24. The first snap-fit ​​portion 13 may be a snap-fit ​​block 130, and the second snap-fit ​​portion 21 may be a snap-fit ​​groove 210. The surface of the snap-fit ​​block 130 facing the snap-fit ​​groove 210 is a slope 131, and along the direction from the top end of the first side wall 1211 to its bottom end, the slope 131 is inclined in the direction toward the snap-fit ​​groove 210.

[0085] In this way, the protective cover 20 can be installed and removed more easily by the cooperation of the guide slope 2411 and the slope 131 on the locking block 130.

[0086] For example, refer to Figure 3 The protective cover 20 also includes a second side plate portion 26 and a third side plate portion 27. The first side plate portion 24 is adjacent to the second side plate portion 26, and the third side plate portion 27 is disposed opposite to the first side plate portion 24 and adjacent to the second side plate portion 26. The top end of the second side plate portion 26 is connected to the top plate portion 25, and the top end of the third side plate portion 27 is connected to the top plate portion 25.

[0087] To better understand the technical solution of this application, the following section combines... Figures 1 to 4 The housing assembly 100 of this application will be described in detail.

[0088] refer to Figures 2 to 5 The housing assembly 100 includes a housing 10 and a protective cover 20. The housing 10 includes a housing body, a terminal post 11, and a protective wall 12. The terminal post 11 is mounted on the housing body, and the protective wall 12 is connected to the housing body and disposed around the periphery of the terminal post 11. The protective cover 20 covers the terminal post 11, cooperates with the protective wall 12, and at least partially surrounds 80% to 98% of the length of the portion of the terminal post 11 extending out of the housing 10. The protective wall 12 includes a first sidewall 121 and a second sidewall 124. The housing 10 and the protective wall 12 are integrally injection molded.

[0089] The pole post 11 can be located in the corner region of the housing 10, that is, in the region where two adjacent edges of the housing 10 are close to each other and tend to intersect. The area on the housing 10 where the pole post 11 is located can be provided with a boss 15, and the pole post 11 extends at least partially from the boss 15.

[0090] The first sidewall 121 is an insulating protective wall 12 extending from one wall of the housing 10, with a portion of the end of this wall forming a second wall. The first sidewall 121 includes a first sub-wall 1211 and a second sub-wall 1212. The first sub-wall 1211 is located at the top of the first sidewall 121, and the second sub-wall 1212 is located at the lower part 1211 of the first sub-wall. The thickness of the first sub-wall 1211 is less than the thickness of the second sub-wall 1212, and the first sub-wall 1211 has a first engaging portion 13 on the side facing the pole post 11. The thickness of the first sub-wall 1211 gradually increases along the direction close to the second sub-wall 1212.

[0091] A stepped surface 14 may be formed between the first sub-wall 1211 and the second sub-wall 1212. When the protective cover 20 is closed, a gap D4 may exist between the bottom of the first side plate portion 24 and the stepped surface 14. This gap D4 satisfies: 0.3 mm ≤ D4 ≤ 5 mm.

[0092] The protective cover 20 is rotatably connected to the second sidewall 124 and includes a second snap-fit ​​portion 21. The protective cover 20 surrounds at least a portion of the pole post 11, and the first snap-fit ​​portion 13 engages with the second snap-fit ​​portion 21.

[0093] The second sidewall 124 is provided with a first mounting position 122 and a second mounting position 123 arranged opposite to each other. The protective cover 20 also includes a first pivot shaft 22 and a second pivot shaft 23, with the first mounting position 122 and the second mounting position 123 respectively receiving the first pivot shaft 22 and the second pivot shaft 23.

[0094] The first mounting position 122 is a groove 1220, the width of the opening 1221 of the groove 1220 is smaller than the diameter of the first pivot shaft 22, and the second mounting position 123 is a channel.

[0095] In the extending directions of the first pivot shaft 22 and the second pivot shaft 23, the first mounting position 122 and the second mounting position 123 are located on opposite sides of the pole post 11, and the second mounting position 123 and the first snap-fit ​​portion 13 are located on the same side of the pole post 11.

[0096] Along the direction from the bottom end to the top end of the first sub-wall 1211, the first engaging portion 13 is located approximately at the center of the first sub-wall 1211. Here, "approximately at the center of the first sub-wall 1211" means approximately at a position ±10% of the center of the first sub-wall 1211.

[0097] The protective wall 12 also includes a second sidewall 124. The first sidewall 121 includes a connecting end 1214 connected to the second sidewall 124 and a free end 1213 arranged opposite to the connecting end 1214. That is, the first sidewall 121 is connected to the second sidewall 124 through the connecting end 1214. The free end 1213 is closer to the first latching part 13 than the connecting end 1214. The distance from the first latching part 13 to the free end 1213 is D1, and the distance from the free end 1213 to the connecting end 1214 is D2. D1 and D2 satisfy: 1 / 8 ≤ D1 / D2 ≤ 1 / 3. That is, the first latching part 13 is closer to the free end 1213, but maintains a suitable distance.

[0098] A receiving groove 1241 is provided on the second side wall 124, and the first mounting position 122 and the second mounting position 123 are provided on the two opposite groove walls of the receiving groove 1241. The bottom of the receiving groove 1241 and the space between the first sub-wall 1211 and the second sub-wall 1212 are located on the same plane, which facilitates molding.

[0099] The protective cover 20 may also include a top plate portion 25. A first pivot 22 and a second pivot 23 may be located on opposite sides of the top plate portion 25, respectively. Along the rotation axis of the first pivot 22 and the second pivot 23, the opposite sides of the top plate portion 25 may have a first gap D3 with the end face of the first mounting position 122 and the end face of the second mounting position 123, respectively, where 0.5 mm ≤ D3 ≤ 3 mm.

[0100] The protective cover 20 may further include a first side plate portion 24, on which a second snap-fit ​​portion 21 is disposed. The top of the first side plate portion 24 is connected to one side of the top plate portion 25. In the installed state, the first side plate portion 24 includes a side surface 241 facing the first side wall 121. The first side plate is located inside the first side wall 121, and the outer side surface 241 of the first side plate portion 24 faces the first side wall 121.

[0101] Side surface 241 may include a guide ramp 2411, which extends from the bottom end of the first side plate portion 24 to the top end of the first side plate portion 24. Along the direction from the top end of the first side plate portion 24 to the bottom end of the first side plate portion 24, the guide ramp 2411 is inclined in a direction away from the first side wall 121 of the first side plate portion 24. The first engaging portion 13 may be a locking block 130, and the second engaging portion 21 may be a locking groove 210. The surface of the locking block 130 facing the locking groove 210 is the ramp 131, which is inclined towards the locking groove 210 along the direction from the top end to the bottom end of the first side wall 1211.

[0102] The protective cover 20 also includes a second side plate portion 26 and a third side plate portion 27. The first side plate portion 24 is adjacent to the second side plate portion 26, and the third side plate portion 27 is disposed opposite to the first side plate portion 26. The top end of the second side plate portion 26 is connected to the top plate portion 25, and the top end of the third side plate portion 27 is connected to the top plate portion 25.

[0103] Other structures of the housing assembly 100 can be referred to conventional settings in the art, and will not be described in detail here.

[0104] Exemplary energy storage device

[0105] Secondly, refer to Figure 1 The embodiments of this application also provide an energy storage device 1000, including the aforementioned housing assembly 100.

[0106] In this application, the energy storage device 1000 can be a battery module, a power battery pack, a low-voltage battery pack, or a start-stop battery pack, etc.

[0107] It should be noted that other aspects of the construction of the energy storage device 1000 can refer to the conventional construction of energy storage devices in the field. For the sake of brevity, this application will not elaborate on these aspects.

[0108] Exemplary electrical equipment

[0109] An embodiment of this application also provides an electrical device including the aforementioned energy storage device 1000. The electrical device has the corresponding effects of the aforementioned battery, which will not be described in detail here.

[0110] It should be noted that the electrical equipment mentioned in this application can be energy storage equipment, such as energy storage cabinets, or power consumption equipment, such as automobiles, drones, power tools, workstations, and motorcycles.

[0111] All terms used in this application have the same meaning as understood by one of ordinary skill in the art to which this application pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and not as idealized or highly formalized, unless expressly defined herein.

[0112] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0113] It should be understood that the term "comprising" and its variations as used in this application are open-ended, meaning "including but not limited to". The term "according to" means "at least in part according to". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least another embodiment".

[0114] It should be understood that although terms such as “first” or “second” may be used in this application to describe various elements (such as a first pivot and a second pivot), these elements are not defined by these terms, which are only used to distinguish one element from another.

[0115] It should be noted that, in the description of this application, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationship, are 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, and therefore should not be construed as a limitation of this application. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0116] It should also be noted that, in the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application depending on the specific circumstances. When a specific device is described as being located between a first device and a second device, an intermediary device may or may not be present between the specific device and the first or second device.

[0117] The scope of protection of this application is not limited to the above embodiments. Any variations or substitutions that can be conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A housing assembly (100), characterized in that, include: The housing (10) includes a housing body, a pole (11) and a protective wall (12), wherein the pole (11) is mounted on the housing body and the protective wall (12) is connected to the housing body and arranged around the pole (11); The protective wall (12) includes a first sidewall (121) and a second sidewall (124). The first sidewall (121) includes a first sub-wall (1211) and a second sub-wall (1212) connected to each other. The first sub-wall (1211) is located at the top of the first sidewall (121), and the second sub-wall (1212) is located at the bottom of the first sub-wall (1211). The thickness of the first sub-wall (1211) is less than the thickness of the second sub-wall (1212). The first sub-wall (1211) has a first snap-fit ​​portion (13) on the side facing the pole post (11). The protective cover (20) is rotatably connected to the second sidewall (124), the protective cover (20) surrounds at least part of the pole post (11), and the protective cover (20) also includes a second snap-fit ​​portion (21), the first snap-fit ​​portion (13) being detachably connected to the second snap-fit ​​portion (21).

2. The housing assembly (100) according to claim 1, characterized in that, The second sidewall (124) is provided with a first mounting position (122) and a second mounting position (123) arranged opposite to each other. The protective cover (20) also includes a first pivot (22) and a second pivot (23). The first pivot (22) is installed in the first mounting position (122), and the second pivot (23) is installed in the second mounting position (123). The first mounting position (122) is a groove (1220), the width of the opening (1221) of the groove (1220) is smaller than the diameter of the first pivot shaft (22), and the second mounting position (123) is a channel; and / or Both the first mounting position (122) and the second mounting position (123) are channels.

3. The housing assembly (100) according to claim 2, characterized in that, In the extending directions of the first pivot (22) and the second pivot (23), the first mounting position (122) and the second mounting position (123) are located on opposite sides of the pole post (11), and the second mounting position (123) and the first snap-fit ​​portion (13) are located on the same side of the pole post (11).

4. The housing assembly (100) according to claim 2, characterized in that, The protective cover (20) also includes a top plate (25), the first pivot (22) and the second pivot (23) are respectively located on opposite sides of the top plate (25), along the rotation axis of the first pivot (22) and the second pivot (23), the opposite sides of the top plate (25) have a first gap D3 with the end face of the first mounting position (122) and the end face of the second mounting position (123), 0.5 mm≤D3≤3 mm.

5. The housing assembly (100) according to any one of claims 1 to 4, characterized in that, Along the direction close to the second sub-wall (1212), the thickness of the first sub-wall (1211) gradually increases.

6. The housing assembly (100) according to any one of claims 1 to 4, characterized in that, Along the direction from the bottom end to the top end of the first sub-wall (1211), the distance from the first snap-fit ​​portion (13) to the top end of the first sub-wall (1211) is D4, and the distance between the bottom end and the top end of the first sub-wall (1211) is D5. D4 and D5 satisfy: 0.4≤D4 / D5≤0.

6.

7. The housing assembly (100) according to any one of claims 1 to 4, characterized in that, The first sidewall (121) includes a connecting end (1214) connected to the second sidewall (124) and a free end (1213) arranged opposite to the connecting end (1214), the free end (1213) being closer to the first snap-fit ​​portion (13) than the connecting end (1214); and The distance from the first snap-fit ​​portion (13) to the free end (1213) is D1, and the distance from the free end (1213) to the connecting end (1214) is D2. D1 and D2 satisfy: 1 / 8 ≤ D1 / D2 ≤ 1 / 3.

8. The housing assembly (100) according to any one of claims 1 to 4, characterized in that, The protective cover (20) further includes a first side plate portion (24), and a second snap-fit ​​portion (21) is disposed on the first side plate portion (24). The first side plate portion (24) includes a side surface (241) facing the first side wall (121). The side surface (241) includes a guide slope (2411), which extends from the bottom end of the first side plate portion (24) to the top end of the first side plate portion (24). Along the direction from the top end of the first side plate portion (24) to the bottom end of the first side plate portion (24), the guide slope (2411) is inclined in the direction of the first side plate portion (24) away from the first side wall (121).

9. The housing assembly (100) according to claim 8, characterized in that, A stepped surface (14) is formed between the first sub-wall (1211) and the second sub-wall (1212). When the first snap-fit ​​part (13) and the second snap-fit ​​part (21) are snap-fitted together, there is a gap between the bottom of the first side plate part (24) and the stepped surface (14).

10. The housing assembly (100) according to any one of claims 1 to 4, characterized in that, The first latching part (13) is a latching block (130), and the second latching part (21) is a latching groove (210). The surface of the latching block (130) facing the latching groove (210) is an inclined surface (131). Along the direction from the top end to the bottom end of the first sub-wall (1211), the inclined surface (131) is inclined toward the latching groove (210).

11. An energy storage device (1000), characterized in that, Includes the housing assembly (100) according to any one of claims 1 to 10.

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