Battery pack shell

Abstract

The utility model provides a battery pack shell which comprises a cover plate and a shell body with at least one opening, the shell body and the cover plate are arranged in a covering mode to seal the opening to form a containing cavity for installing a battery pack, a fixing block is arranged at the top of the opening of the shell body, a clamping groove is formed between the fixing block and the shell body, and the fixing block is arranged in the clamping groove. A clamping block is arranged on the inner wall of the first cover plate and inserted into the clamping groove in a clamping fit mode, a connecting block with a first installation hole is arranged at the bottom of the opening of the shell, a second installation hole is formed in the position, corresponding to the first installation hole, of the shell, a fixing pin is installed in the first installation hole, and the fixing pin is inserted into the clamping groove. And the fixing pin penetrates through the second mounting hole. After the shell is assembled, the connecting block, the clamping block and the fixing block are all located in the containing cavity, the second mounting hole is located in the bottom of the shell, the bottom of the shell faces the ground when the shell is used, and therefore the purpose that the front face, other side faces and the top face are free of screws is achieved, and the attractiveness of the shell is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage equipment, in particular to a battery pack shell. Background Art

[0002] A battery pack, or energy storage power supply, is generally composed of multiple battery packs. At the same time, a battery management system is also added for energy storage operations. Energy storage power supplies can store electrical energy and have a variety of power output interfaces. They are widely used in mobile office, outdoor leisure, outdoor operations, emergency rescue and other scenarios. As the outdoor camping craze drives the rapid rise of surrounding industries, household energy storage power supplies have become a new category with explosive growth, and energy storage business will become a new development direction for battery companies.

[0003] At present, a battery pack generally includes an outer shell and a battery module. The outer shell includes a lower shell and an upper cover that are covered together. The lower shell is provided with a receiving cavity with an opening, and the battery module is received in the receiving cavity. The upper cover is used to close and open the opening, and a sealing strip is also provided between the lower shell and the upper cover. However, the covering between the lower shell and the upper cover of the battery pack requires the upper cover and the lower shell to be tightly locked due to the sealing treatment provided by the sealing strip between them. Therefore, screws are provided to connect and lock the overlapping part after the upper cover and the lower shell are covered together. Moreover, the screws are all exposed on the outside of the upper cover or the side of the lower shell, resulting in too many screws being exposed after the battery pack is installed and used, and the outer shell of the battery pack has the problem of poor aesthetics.

[0004] In view of this, it is indeed necessary to provide a technical solution to the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a battery pack shell to solve the problem that the battery pack shell has poor aesthetics.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A battery pack shell comprises a cover plate and a shell having at least one opening, wherein the shell and the cover plate are arranged to cover the opening to close the opening to form a cavity for mounting the battery pack shell, a fixing block is arranged at the top of the shell opening, a slot is formed between the fixing block and the shell, a locking block is arranged on an inner wall of the cover plate, the locking block is inserted into the slot for locking fit, a connecting block having a first mounting hole is arranged at the bottom of the shell opening, a second mounting hole is opened at a position corresponding to the first mounting hole, a fixing pin is installed in the first mounting hole, the fixing pin passes through the second mounting hole, and the connecting block, the locking block and the fixing block are all located in the cavity.

[0008] As an improvement of the battery pack shell, the cover plate includes a base plate and side plates formed by extending four sides of the base plate in the same Y-axis direction, the block is located at the inner top of the side plate, and the base plate is bent into an arc shape.

[0009] As an improvement of the battery pack shell, a support bar is provided on the substrate along its curved arc line, and the support bar is located in the cavity.

[0010] As an improvement to the battery pack shell, a plurality of support bars are provided, and the plurality of support bars are evenly spaced and distributed in parallel.

[0011] As an improvement of the battery pack shell, at least two of the fixing blocks of the shell, the connecting blocks and the clamping blocks on the cover plate are provided.

[0012] As an improvement of the battery pack shell, a fixing strip is arranged on the cover plate, the fixing strip is arranged along the inner wall of the side plate, the side of the fixing strip facing the shell is a plane, and a sealing rubber ring is arranged on the plane.

[0013] As an improvement of the battery pack shell, at least a portion of the open edge of the shell protrudes outward to form a convex strip, and at least a portion of the convex strip abuts against the sealing rubber ring.

[0014] As an improvement to the battery pack shell, four sides of the top of the convex strip extend toward the periphery to form an extension portion, and a flow channel is formed between the extension portion, the convex strip and the shell.

[0015] As an improvement of the battery pack shell, the extension portion is bent toward the shell body, and the bending angle is a, and a is less than 90° and greater than 0°.

[0016] As an improvement of the battery pack shell, a surface of the convex strip close to the fixing block is an inclined surface, and the inclined surface is gradually inclined downward from the middle to both ends.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1) The shell of the present housing is open on the front side, and the cover plate is arranged to cover the shell to close the opening. After the shell and the cover plate are covered, the upper parts are fixed by inserting a card block into a card slot, and the lower parts are connected to the first mounting hole through a fixing pin passing through the second mounting hole and tightened to fix. After the fixing pin is tightened, the end of the fixing pin can only be observed through the second mounting hole. Since the connecting block, the card block and the fixing block are all located in the cavity, the second mounting hole is located at the bottom of the present housing. When in use, the bottom of the housing faces the ground, so the purpose of having no screws on the front, other side surfaces and top surface is achieved, thereby improving the aesthetics of the assembled housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 A schematic diagram of the three-dimensional structure of a battery pack shell provided by the utility model.

[0021] Figure 2 This is one of the three-dimensional structural schematic diagrams of a shell of a battery pack shell provided by the utility model.

[0022] Figure 3 This is a second schematic diagram of the three-dimensional structure of a shell of a battery pack shell provided by the utility model.

[0023] Figure 4 A schematic diagram of the three-dimensional structure of a connecting block of a battery pack shell provided by the utility model.

[0024] Figure 5 A top view of a shell of a battery pack shell provided by the utility model.

[0025] Figure 6 This is an enlarged view of point A of a battery pack shell provided by the utility model.

[0026] Figure 7 A schematic diagram of the three-dimensional structure of a cover plate of a battery pack shell provided by the utility model.

[0027] Figure 8 This is an enlarged view of point B of a battery pack shell provided by the utility model.

[0028] In the figure: 1. shell; 11. fixing block; 1101. slot; 12. connecting block; 1201. first mounting hole; 1202. inclined block; 13. convex strip; 14. extension portion; 1401. inclined surface; 2. cover plate; 21. base plate; 22. side plate; 2201. second mounting hole; 23. support strip; 24. block; 25. fixing pin; 26. fixing strip; 2601. plane; 27. sealing rubber ring; 3. cavity. DETAILED DESCRIPTION

[0029] In order to make the technical solution and advantages of the utility model clearer, the utility model and its beneficial effects will be further described in detail below in combination with specific implementation methods and drawings of the specification, but the implementation methods of the utility model are not limited thereto.

[0030] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] The standard parts used in the utility model can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt the conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.

[0032] like Figures 1 to 8 As shown, a battery pack shell comprises a cover plate 2 and a shell body 1 having at least one opening, the shell body 1 and the cover plate 2 are arranged to cover the opening to close the opening to form a cavity 3 for mounting the battery pack shell, a fixing block 11 is arranged on the top of the opening of the shell body 1, a card slot 1101 is formed between the fixing block 11 and the shell body 1, a card block 24 is arranged on an inner wall of the cover plate 2, the card block 24 is inserted into the card slot 1101 for card engagement, a connecting block 12 having a first mounting hole 1201 is arranged on the bottom of the opening of the shell body 1, a second mounting hole 2201 is opened at a corresponding position of the shell body 1 and the first mounting hole 1201, a fixing pin 25 is installed in the first mounting hole 1201, the fixing pin 25 passes through the second mounting hole 2201, and the connecting block 12, the card block 24 and the fixing block 11 are all located in the cavity 3.

[0033] Specifically, the front side of the housing 1 is open, the fixing block 11 is located at the upper part of the housing 1, the connecting block 12 is located at the lower part of the housing 1, the fixing block 11 is in an inverted concave shape, the fixing pin 25 is threadedly connected with the first mounting hole 1201, and the fixing pin 25 is a screw. In the process of assembling the housing 1 and the cover plate 2, the clamping block 24 on the upper side of the cover plate 2 is first inserted into the clamping groove 1101 for clamping, and then the first mounting hole 1201 and the second mounting hole 2201 are gradually aligned, and finally the fixing pin 25 is passed through the second mounting hole 2201 and tightened with the first mounting hole 1201, so that the cover plate 2 and the housing 1 can be locked and fixed.

[0034] The shell 1 of the present housing is open on the front side, and the cover plate 2 is arranged to cover the shell 1 to close the opening. After the shell 1 and the cover plate 2 are covered, the upper parts are inserted into the card slot 1101 through the clamping block 24 to be clamped and fixed, and the lower parts are connected to the first mounting hole 1201 through the second mounting hole 2201 by the fixing pin 25 and tightened to fix. After the fixing pin 25 is tightened, the end of the fixing pin 25 can only be observed through the second mounting hole 2201. Since the connecting block 12, the clamping block 24 and the fixing block 11 are all located in the cavity 3, the second mounting hole 2201 is located at the bottom of the present housing. When in use, the bottom of the housing faces the ground, so the purpose of having no screws on the front, other side surfaces and top surface is achieved, thereby improving the aesthetics of the assembled housing.

[0035] In some embodiments of the present application, the cover plate 2 includes a substrate 21, and a side plate 22 formed by extending four sides of the substrate 21 in the same Y-axis direction, the block 24 is located at the inner top of the side plate 22, and the substrate 21 is bent into an arc shape. Specifically, the substrate 21 is an arc-shaped plate that gradually bends toward the left and right sides in the middle, and the side plate 22 is formed by extending the upper and lower left and right edges of the substrate 21 toward the rear side. The side plate 22 is a frame shape that matches the open shape of the shell 1, the fixing block 11 is located at the inner upper part of the side plate 22, and the connecting block 12 is located at the inner lower part of the side plate 22. The arrangement of the substrate 21 being bent into an arc shape further improves the aesthetics of the shell, and the arc-shaped substrate 21 can assist the liquid to flow downward, avoid the phenomenon of too much liquid staying on the substrate 21, and play a certain waterproof effect.

[0036] In other embodiments, a slanted block 1202 is provided on one side of the connection block 12 close to the cover plate 2, and the slanted block 1202 is gradually inclined toward the outside of the shell 1. Specifically, the slanted block 1202 is set to be gradually inclined toward the outside of the shell 1. When the cover plate 2 is covered with the shell 1, the end of the shell 1 first contacts the slanted block 1202, and is guided by the slanted block 1202 to drive the cover plate 2 to gradually align with the shell 1, so as to achieve the purpose of rapid positioning and improve the covering efficiency of the cover plate 2 and the shell 1.

[0037] In some embodiments of the present application, a support bar 23 is provided on the substrate 21 along its curved arc line, and the support bar 23 is located in the cavity 3. Specifically, the support bar 23 is transversely arranged on the side of the substrate 21 facing the shell 1, and is centered left and right. The setting of the support bar 23 supports the curved arc-shaped substrate 21, increases the strength of the substrate 21, and improves the impact resistance of the cover plate 2. By providing the support bar 23 on the substrate 21, while improving the aesthetics of the outer shell, it is ensured that the outer shell has a high strength, and compared with the existing battery pack outer shell in which the cover plate 2 is an inner flat cover and an outer curved cover, the structure and occupied area of ​​the cover plate 2 are simplified, and the cost is reduced.

[0038] In some embodiments of the present application, a plurality of support bars 23 are provided, and the plurality of support bars 23 are evenly spaced and distributed in parallel. Specifically, the plurality of support bars 23 are distributed in sequence up and down, evenly spaced and parallel, further improving the strength of the cover plate 2.

[0039] In some embodiments of the present application, at least two fixing blocks 11, connecting blocks 12 and clamping blocks 24 on the cover plate 2 are provided on the shell 1. Specifically, the two fixing blocks 11 are respectively located on the left and right sides of the upper opening of the shell 1, and the two connecting blocks 12 are respectively located on the left and right sides of the lower opening of the shell 1. The two fixing blocks 11 and the two connecting blocks 12 are respectively close to the four corners of the opening of the shell 1. Correspondingly, the number of fixing pins 25 and second mounting holes 2201 is the same as that of the connecting blocks 12; the two clamping blocks 24 are provided at the positions corresponding to the cover plate 2 and the two fixing blocks 11. Through the snap-fitting between the two fixing blocks 11 and the two clamping blocks 24, and the threaded connection between the two connecting blocks 12 and the two fixing pins 25, the cover plate 2 is locked and fixed to the four corners of the shell 1, ensuring that the cover plate 2 and the shell 1 can be evenly locked and stable after the cover is closed.

[0040] In some embodiments of the present application, a fixing strip 26 is provided on the cover plate 2, and the fixing strip 26 is provided along the inner wall of the side plate 22. The side of the fixing strip 26 facing the housing 1 is a plane 2601, and a sealing rubber ring 27 is provided on the plane 2601. Specifically, the fixing strip 26 is in the shape of a frame connected and fitted with the four side walls of the cavity 3, and the front side of the fixing strip 26 is a plane 2601. The sealing rubber ring 27 is provided on the plane 2601, and the sealing rubber ring 27 is in contact with the cover plate 2 to prevent liquid from entering the cavity 3, thereby achieving the purpose of waterproofing.

[0041] In some embodiments of the present application, at least a portion of the open edge of the housing 1 is protruded outward to form a convex strip 13, and the convex strip 13 is at least partially in contact with the sealing rubber ring 27. Specifically, the convex strip 13 is arranged at the edge of the open end of the housing 1 to form a quadrilateral structure matching the open shape of the housing 1, and the convex strip 13 is in contact with the sealing rubber ring 27 to squeeze the sealing rubber ring 27, thereby sealing the cover plate 2 and the housing 1, and the gap between the two is fully filled, further improving the waterproof effect after the cover plate 2 and the housing 1 are covered.

[0042] In some embodiments of the present application, the four sides of the top of the convex strip 13 extend toward the periphery to form an extension portion 14, and a flow channel is formed between the extension portion 14, the convex strip 13 and the shell 1. Specifically, the top of the convex strip 13 is the front end face of the convex strip 13, and the four sides of the top of the convex strip 13, the top, bottom, left and right sides, all extend toward the periphery to form the extension portion 14, and then form a flow channel with the shell 1. After the liquid enters the convex strip 13, it will flow downward along the flow after being blocked by the extension portion 14, preventing the liquid from penetrating into the cavity 3 along the convex strip 13 from the gap between the convex strip 13 and the cover plate 2 after the sealing rubber ring 27 fails. The extension portion 14 has a certain blocking effect on the liquid.

[0043] In some embodiments of the present application, the extension portion 14 is bent toward the shell 1, and the bending angle is a, a is less than 90° and greater than 0°. Specifically, a can be 5°, 10°, 15°, 20°, 25°, 30°, 35°, 40°, 45°, 50°, 55°, 60°, 65°, 70°, 75°, 80°, 85°, 89°. Preferably, it is 45°. The extension portion 14 is set to gradually tilt toward the rear side, and the tilt angle is 45°. While abutting against the sealing rubber ring 27 to ensure high waterproof performance, the contact area between the convex strip 13 and the extension portion 14 and the sealing rubber ring 27 is reduced, thereby reducing the contact pressure, reducing the resilience of the cover plate 2, ensuring the stability of the cover plate 2 and the shell 1 after covering, and thus improving the service life of the shell.

[0044] In some embodiments of the present application, a side of the convex strip 13 close to the fixed block 11 is an inclined surface 1401, and the middle to both ends of the inclined surface 1401 are gradually inclined downward. Specifically, the outer surface of the convex strip 13 located on the upper side is set as an inclined surface 1401 that is gradually inclined downward from the middle to both ends. When in use, after the liquid flows into the inclined surface 1401, it is guided by the inclined surface 1401, and the liquid gradually flows downward due to gravity, preventing the liquid from always staying on the upper part of the convex strip 13, further improving the waterproof performance.

[0045] According to the disclosure and teaching of the above description, the technicians in the field of the utility model can also change and modify the above implementation. Therefore, the utility model is not limited to the above specific implementation, and any obvious improvement, replacement or modification made by the technicians in this field on the basis of the utility model belongs to the protection scope of the utility model. In addition, although some specific terms are used in this specification, these terms are only for the convenience of explanation and do not constitute any limitation to the utility model.

Claims

1. A battery pack housing, characterized in that: It includes a cover plate and a shell with at least one opening, the shell and the cover plate are arranged to cover the opening to close the opening to form a cavity, a fixing block is arranged at the open top of the shell, a card slot is formed between the fixing block and the shell, an inner wall of the cover plate is provided with a card block, the card block is inserted into the card slot for card fit, a connecting block with a first mounting hole is arranged at the open bottom of the shell, a second mounting hole is opened at a corresponding position of the shell and the first mounting hole, a fixing pin is installed in the first mounting hole, the fixing pin passes through the second mounting hole, and the connecting block, the card block and the fixing block are all located in the cavity.

2. A battery pack casing according to claim 1, characterized in that: The cover plate includes a base plate and side plates formed by extending four sides of the base plate in the same Y-axis direction, the clamping block is located at the inner top of the side plate, and the base plate is bent into an arc shape.

3. A battery pack casing according to claim 2, characterized in that: A support bar is arranged on the substrate along the curved arc line thereof, and the support bar is located in the cavity.

4. A battery pack casing according to claim 3, characterized in that: A plurality of support bars are provided, and the plurality of support bars are evenly spaced and distributed in parallel.

5. The battery pack housing according to claim 2, characterized in that: At least two of the fixing blocks of the shell, the connecting blocks and the clamping blocks on the cover plate are provided.

6. A battery pack casing according to any one of claims 2 to 5, characterized in that: The cover plate is provided with a fixing strip, the fixing strip is provided along the inner wall of the side plate, the side of the fixing strip facing the shell is a plane, and a sealing rubber ring is provided on the plane.

7. A battery pack casing according to claim 6, characterized in that: At least a portion of the open edge of the shell protrudes outward to form a convex strip, and at least a portion of the convex strip abuts against the sealing rubber ring.

8. The battery pack housing according to claim 7, characterized in that: Four sides of the top of the convex strip all extend toward the periphery to form an extension portion, and a flow channel is formed between the extension portion, the convex strip and the shell.

9. A battery pack casing according to claim 8, characterized in that: The extension portion is bent toward the housing, and the bending angle is a, and a is less than 90° and greater than 0°.

10. The battery pack housing according to claim 8, characterized in that: A side of the convex strip close to the fixing block is an inclined surface, and the inclined surface is gradually inclined downward from the middle to both ends.

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