Connecting structure of lithium battery shell and battery cover

Abstract

The utility model discloses a connecting structure of a lithium battery shell and a battery cover, which comprises a shell body, the tops of two sides of an inner cavity of the shell body are fixedly connected with mounting seats, and inner cavities of the mounting seats are movably connected with inserting plates. Through the heat dissipation openings, the fixing frame, the heat conduction plate and the heat dissipation fins, the heat conduction plate makes contact with the surface of the lithium battery pack, heat can be generated in the charging and discharging process of lithium electrons, the heat is conducted to the heat dissipation fins through the heat conduction plate, the heat is rapidly dissipated out through the heat dissipation fins, compared with a lithium battery, the natural heat dissipation efficiency is higher, and the purpose of efficient heat dissipation is achieved; the shell cover is moved to a clamping plate at the bottom of the shell cover to be inserted into a clamping groove in the top of the outer shell, meanwhile, an inserting plate at the bottom of the shell cover is inserted into an inner cavity of the mounting base, and a push-pull plate is moved to drive a positioning rod to move to one end of the positioning rod to penetrate through an inner cavity of the inserting plate, so that the shell cover is stably mounted at the top of the outer shell, and later disassembly is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery technology, specifically to the connection structure between the lithium battery casing and the battery cover. Background Technology

[0002] Lithium batteries are batteries that contain lithium (including metallic lithium, lithium alloys, lithium ions, and lithium polymers) in their electrochemical system. Lithium batteries can be broadly classified into two categories: lithium metal batteries and lithium ion batteries. Lithium ion batteries are generally housed within a protective structure consisting of a battery casing and a battery cover to prevent damage from external forces.

[0003] For example, China Utility Model Patent No. 202322087518.0 provides a "shell splicing structure for lithium battery assembly". This patent includes a box body and a box cover. The box body has a detachable box cover at the opening. The outer wall of the box body is symmetrically equipped with positioning posts, and the positioning posts are fitted with rubber sleeves. The locking bolts are turned until the box cover is tightly pressed against the opening of the box body. A single set of positioning parts and a single locking part can complete the splicing and fixing of the box body and the box cover. The assembly efficiency is high and the stability is good.

[0004] While the aforementioned document addresses the issues in existing technologies where, during lithium battery assembly, the external protective casing, consisting of a casing and a cover, requires multiple limiting and locking components to secure the cover to the top opening of the casing, resulting in a cumbersome assembly process and low efficiency, it still suffers from poor heat dissipation. The casing lacks a corresponding heat dissipation structure, and since lithium batteries generate heat during charging and discharging, inadequate heat dissipation can affect their lifespan. Therefore, this document proposes a connection structure between the lithium battery casing and the cover. Utility Model Content

[0005] The purpose of this invention is to provide a connection structure between the lithium battery casing and the battery cover, which has the advantage of good heat dissipation.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a connection structure between a lithium battery casing and a battery cover, comprising a casing body, mounting seats fixedly connected to the top of both sides of the inner cavity of the casing body, insert plates movably connected to the inner cavity of the mounting seats, a casing cover fixedly connected to the top of the insert plates, locking plates fixedly connected to both sides of the bottom of the casing cover, locking grooves provided on both sides of the top of the casing body, positioning rods penetratingly connected to the top of both sides of the casing body, one end of the positioning rod penetratingly connected to the inner cavity of the locking plate, a push-pull plate fixedly connected to the end of the positioning rod away from the locking plate, a wiring plate fixedly connected to the top of the casing cover, heat dissipation vents provided on both sides of the casing body, fixing brackets fixedly connected to both sides of the inner cavity of the casing body, a heat-conducting plate fixedly connected to the inner cavity of the fixing bracket, heat dissipation fins provided on one side of the heat-conducting plate, a pad fixedly connected to the bottom of the inner cavity of the casing body, and limiting side plates fixedly connected to both sides of the top of the pad.

[0007] As a preferred embodiment, a first positioning block is fixedly connected to the bottom of the push-pull plate, and a second positioning block is fixedly connected to both sides of the outer shell and to the rear side of the first positioning block. Insertion holes are provided on the surfaces of both the first and second positioning blocks.

[0008] As a preferred embodiment, a handle is fixedly connected to both sides of the top of the shell cover, and a soft pad is fixedly connected to the top of the inner cavity of the handle.

[0009] As a preferred embodiment, a limiting rod is fixedly connected to the bottom of one side of the push-pull plate, and limiting grooves are formed on both sides of the outer shell near the push-pull plate, with the surface of the limiting rod movably connected to the inner cavity of the limiting groove.

[0010] As a preferred embodiment, protective frames are fixedly connected to both sides of the outer casing and to the outside of the heat dissipation vents, and the protective frames are made of stainless steel.

[0011] As a preferred embodiment, a base plate is fixedly connected to the bottom of the outer casing, and support pads are fixedly connected to the four corners of the bottom of the base plate.

[0012] As a preferred embodiment, corner protectors are fixedly connected to both sides of the top of the shell cover, and the corner protectors are made of synthetic rubber.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model uses a heat dissipation port, a fixing frame, a heat-conducting plate, and heat dissipation fins. The heat-conducting plate is in contact with the surface of the lithium battery pack. During the charging and discharging of lithium batteries, heat is generated. The heat is conducted through the heat-conducting plate to the heat dissipation fins, and the heat dissipation fins quickly dissipate the heat. Compared with the natural heat dissipation efficiency of lithium batteries, it is more efficient and achieves the purpose of high-efficiency heat dissipation.

[0015] 2. This utility model uses a mounting base, insert plate, clamping plate, clamping groove, positioning rod, and push-pull plate. The shell cover is moved until the clamping plate at the bottom of the shell cover is inserted into the clamping groove at the top of the shell body. At the same time, the insert plate at the bottom of the shell cover is inserted into the inner cavity of the mounting base. The push-pull plate is moved, and the push-pull plate drives the positioning rod to move until one end of the positioning rod passes through the inner cavity of the insert plate. In this way, the shell cover is firmly installed on the top of the shell body and is convenient for later disassembly. Attached Figure Description

[0016] Figure 1 This is a three-dimensional view of the structure of this utility model;

[0017] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the connection structure between the fixing frame and the heat dissipation fins of this utility model;

[0019] Figure 4 This utility model Figure 2 A magnified view of a portion of point A in the middle.

[0020] In the diagram: 1. Outer shell; 2. Mounting base; 3. Insert plate; 4. Shell cover; 5. Clamping plate; 6. Clamping slot; 7. Positioning rod; 8. Push-pull plate; 9. Wiring board; 10. Heat dissipation vent; 11. Fixing bracket; 12. Heat conduction plate; 13. Heat dissipation fins; 14. Pad; 15. Limiting side plate; 16. Protective frame. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0023] Example 1:

[0024] Please see Figures 1-4As shown, this utility model provides a connection structure between a lithium battery casing and a battery cover, including a casing 1. Mounting seats 2 are fixedly connected to the top of both sides of the inner cavity of the casing 1. Insert plates 3 are movably connected to the inner cavity of the mounting seats 2. A casing cover 4 is fixedly connected to the top of the insert plates 3. Clamping plates 5 are fixedly connected to both sides of the bottom of the casing cover 4. Slots 6 are provided on both sides of the top of the casing 1. Positioning rods 7 are passed through the top of both sides of the casing 1. One end of the positioning rod 7 is connected through the inner cavity of the clamping plate 5. A push-pull plate 8 is fixedly connected to the end of the positioning rod 7 away from the clamping plate 5. The top of the casing cover 4 is fixedly connected to... The battery pack is equipped with a terminal block 9. Heat dissipation vents 10 are provided on both sides of the outer casing 1. Fixing brackets 11 are fixedly connected to both sides of the inner cavity of the outer casing 1. A heat-conducting plate 12 is fixedly connected to the inner cavity of the fixing bracket 11. A heat dissipation fin 13 is provided on one side of the heat-conducting plate 12. A pad 14 is fixedly connected to the bottom of the inner cavity of the outer casing 1. Limiting side plates 15 are fixedly connected to both sides of the top of the pad 14. The heat-conducting plate 12 is in contact with the surface of the lithium battery pack. Heat is generated during the charging and discharging of lithium batteries. The heat is conducted through the heat-conducting plate 12 to the heat dissipation fin 13, and the heat dissipation fin 13 dissipates the heat quickly.

[0025] The application of heat dissipation vents 10, fixing brackets 11, heat-conducting plates 12 and heat dissipation fins 13 in this technical solution, by setting high-efficiency heat dissipation components on both sides of the outer casing 1, can quickly dissipate the heat generated by the charging and discharging of the lithium battery pack, and avoid high heat leading to a reduction in the lifespan of the lithium battery.

[0026] Example 2:

[0027] Based on Embodiment 1, this utility model is as follows: Figures 1-3 As shown, a first positioning block is fixedly connected to the bottom of the push-pull plate 8, and a second positioning block is fixedly connected to both sides of the outer shell 1 and to the rear of the first positioning block. Insertion holes are provided on the surfaces of the first and second positioning blocks. A handle is fixedly connected to both sides of the top of the cover 4. A soft pad is fixedly connected to the top of the inner cavity of the handle. A limit rod is fixedly connected to the bottom of one side of the push-pull plate 8. Limit grooves are provided on both sides of the outer shell 1 and near the push-pull plate 8. The surface of the limit rod is movably connected to the inner cavity of the limit groove.

[0028] The above technical solution is mainly used to fix the push-pull plate 8, facilitate lifting the cover 4, and limit the movement range of the push-pull plate 8. The bolt is inserted into the insertion hole on the surface of the first positioning block and the second positioning block, and the nut is screwed on the surface of the bolt to fix the push-pull plate 8. Hold the handle by hand and lift the cover 4 through the handle. Lift the entire lithium battery pack through the cover 4. The limiting rod moves with the push-pull plate 8 in the inner cavity of the limiting groove, which can limit the movement range of the push-pull plate 8 and prevent the positioning rod 7 from falling off.

[0029] Example 3:

[0030] Based on Embodiment 2, this utility model is as follows: Figures 1-3 As shown, protective frames 16 are fixedly connected to both sides of the outer shell 1 and to the outside of the heat dissipation vent 10. The protective frames 16 are made of stainless steel. A base plate is fixedly connected to the bottom of the outer shell 1. Support pads are fixedly connected to the four corners of the bottom of the base plate. Corner pads are fixedly connected to both sides of the top of the shell cover 4. The corner pads are made of synthetic rubber.

[0031] The above technical solution is mainly used to prevent water from splashing into the inner cavity of the outer shell 1 through the heat dissipation port 10, to stably support the bottom of the outer shell 1 and protect the corners of the cover 4. The protective frame 16 blocks the heat dissipation port 10, which can prevent water from splashing in from the heat dissipation port 10 and causing a short circuit in the lithium battery pack. The four support pads at the bottom of the base plate have good anti-slip properties, so that the lithium battery shell can be stably placed in the use position and is not easy to slide. The soft corner pads can protect the corners of the cover 4 from being damaged.

[0032] The working principle of this utility model is as follows: The lithium battery is placed into the inner cavity of the outer shell 1, and then the shell cover 4 is moved until the retaining plate 5 at the bottom of the shell cover 4 is inserted into the retaining groove 6 at the top of the outer shell 1. At the same time, the insert plate 3 at the bottom of the shell cover 4 is inserted into the inner cavity of the mounting base 2. The push-pull plate 8 is moved, and the push-pull plate 8 drives the positioning rod 7 to move until one end of the positioning rod 7 passes through the inner cavity of the insert plate 3, thereby firmly installing the shell cover 4 on the top of the outer shell 1. During the use of this lithium battery pack, the heat-conducting plate 12 is in contact with the surface of the lithium battery pack. During the charging and discharging of lithium batteries, heat is generated. The heat is conducted through the heat-conducting plate 12 to the heat dissipation fins 13. The heat dissipation fins 13 dissipate the heat quickly, which is more efficient than the natural heat dissipation of lithium batteries.

[0033] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0034] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A connection structure between a lithium battery casing and a battery cover, comprising a casing (1), characterized in that: Mounting bases (2) are fixedly connected to the top of both sides of the inner cavity of the outer shell (1). Insert plates (3) are movably connected to the inner cavity of the mounting bases (2). A shell cover (4) is fixedly connected to the top of the insert plates (3). Clamping plates (5) are fixedly connected to both sides of the bottom of the shell cover (4). Slots (6) are provided on both sides of the top of the outer shell (1). Positioning rods (7) are connected through the top of both sides of the outer shell (1). One end of the positioning rod (7) is connected through the inner cavity of the clamping plate (5). The positioning rod (7) is located away from the clamping plate (5). A push-pull plate (8) is fixedly connected to the end, a wiring plate (9) is fixedly connected to the top of the shell cover (4), heat dissipation vents (10) are provided on both sides of the outer shell (1), a fixing bracket (11) is fixedly connected to both sides of the inner cavity of the outer shell (1), a heat-conducting plate (12) is fixedly connected to the inner cavity of the fixing bracket (11), a heat dissipation fin (13) is provided on one side of the heat-conducting plate (12), a pad (14) is fixedly connected to the bottom of the inner cavity of the outer shell (1), and a limit side plate (15) is fixedly connected to both sides of the top of the pad (14).

2. The connection structure between the lithium battery casing and the battery cover according to claim 1, characterized in that: The bottom of the push-pull plate (8) is fixedly connected to a first positioning block, and the two sides of the outer shell (1) and the rear side of the first positioning block are fixedly connected to a second positioning block. The surfaces of the first positioning block and the second positioning block are provided with insertion holes.

3. The connection structure between the lithium battery casing and the battery cover according to claim 1, characterized in that: Both sides of the top of the cover (4) are fixedly connected with handles, and the top of the inner cavity of the handle is fixedly connected with a soft pad.

4. The connection structure between the lithium battery casing and the battery cover according to claim 1, characterized in that: A limiting rod is fixedly connected to the bottom of one side of the push-pull plate (8), and a limiting groove is opened on both sides of the outer shell (1) near the push-pull plate (8). The surface of the limiting rod is movably connected to the inner cavity of the limiting groove.

5. The connection structure between the lithium battery casing and the battery cover according to claim 1, characterized in that: Protective frames (16) are fixedly connected to both sides of the outer shell (1) and outside the heat dissipation vent (10), and the protective frames (16) are made of stainless steel.

6. The connection structure between the lithium battery casing and the battery cover according to claim 1, characterized in that: The bottom of the outer shell (1) is fixedly connected to a base plate, and support pads are fixedly connected to the four corners of the bottom of the base plate.

7. The connection structure between the lithium battery casing and the battery cover according to claim 1, characterized in that: Both sides of the top of the cover (4) are fixedly connected with corner protectors, which are made of synthetic rubber.

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