Battery cell shell with protection function

Abstract

The utility model belongs to the field of battery cell shells, and particularly relates to a battery cell shell with a protection function, which comprises a battery cell, the outer side of the battery cell is sleeved with a shell in a sliding manner, the top of the shell is clamped with a shell cover, the shell cover is connected outside the battery cell in a sliding manner, and the inner surface of the shell cover is fixedly connected with a guide rod. The outer side of a rod body of the guide rod is slidably connected with a plug pin, and the plug pin penetrates through the shell cover and is slidably connected with the shell cover. According to the utility model, a split structure consisting of the shell and the shell cover is arranged outside the battery cell, so that the battery cell can be protected, the plug pin supported by the spring is arranged in the shell cover, the inclined surface block is arranged on the plug pin, the sliding pin capable of sliding is additionally arranged, and the sliding pin can be limited by the baffle disc on the shell cover, so that the safety of the battery cell is improved. The plug pin can be transversely inserted into the shell by utilizing the matching of the sliding pin and the inclined surface block, so that the disassembly and assembly among the battery cell, the shell and the shell cover can be completed only by controlling the separation and reunion between the plug pin and the shell.

Description

Technical Field

[0001] This utility model relates to the field of battery cell casing technology, specifically to a battery cell casing with protective functions. Background Technology

[0002] New energy vehicles generally use battery packs to power the entire vehicle. The battery pack contains multiple cells, which are connected in series or parallel to provide power to the vehicle.

[0003] A search revealed that the invention patent with publication number CN114759303A discloses a battery cell casing, a battery cell, and a battery pack. The battery cell casing includes: a housing having an accommodating space and an opening communicating with the accommodating space; and an end cap covering the opening. The housing includes a bottom wall, two opposing end walls, and two opposing side walls. The outer surface area of ​​the end walls is smaller than that of the side walls. The bottom wall, the two end walls, and the two side walls enclose the accommodating space, and the thickness of the end walls is greater than the thickness of the side walls.

[0004] Existing battery cells are generally thin-shell structures, which are easily dented by bumps, thus damaging the cells. In addition, the heat dissipation of the cells relies solely on the material of the shell itself, resulting in only average heat dissipation performance. Utility Model Content

[0005] The purpose of this utility model is to provide a protective battery cell shell, which solves the problem that existing battery cells are generally thin-shell structures, and their shells are easily dented by bumps, thus damaging the battery cells. At the same time, it also solves the problem that the heat dissipation of the battery cells relies solely on the material of the shell itself, resulting in a generally poor heat dissipation effect.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a protective battery cell housing, comprising a battery cell, a housing slidably sleeved on the outer side of the battery cell, a housing cover snapped onto the top of the housing, and the housing cover slidably connected to the outside of the battery cell, a guide rod fixedly connected to the inner surface of the housing cover, a pin slidably connected to the outer side of the guide rod, the pin penetrating the housing cover and slidably connected to the housing cover, the pin being inserted into the housing, a beveled block fixedly connected to the pin, a fixing ring fixedly connected to the inside of the housing cover, a sliding pin slidably connected to the inside of the fixing ring, and the sliding pin penetrating the fixing ring, the lower end of the sliding pin having a hemispherical portion abutting against the beveled surface of the beveled block, a convex pivot pin rotatably connected to the top of the housing cover, a baffle plate fixedly connected to the top of the convex pivot pin, the baffle plate abutting against the hemispherical portion at the top of the sliding pin, and the baffle plate slidably connected to the housing cover.

[0007] Preferably, heat-conducting plates are symmetrically fixedly connected to both sides of the inner surface of the outer casing, with one side of the heat-conducting plate penetrating through the outer casing and the other side of the heat-conducting plate contacting the outer walls of both sides of the battery cell. Fins are fixedly connected to the upper part of the heat-conducting plates, penetrating through the outer casing and slidably connected to it. The heat-conducting plates and fins increase the heat dissipation capacity of the outer casing.

[0008] Preferably, a spring is provided inside the pin, one end of which is fixedly connected to the guide rod, and the other end of which is fixedly connected to the inner surface of the pin. The spring allows a reaction force to be applied to the pin, thus aiding in its repositioning.

[0009] Preferably, a stop block is fixedly connected to the pin body of the sliding pin, and the stop block is slidably connected inside the housing cover. A second spring is sleeved on the outer side of the pin body of the sliding pin. The stop block, in conjunction with the fixing ring, facilitates the fixing of the second spring.

[0010] Preferably, one end of the second spring is fixedly connected to the fixed ring, and the other end of the second spring is fixedly connected to the stop block. The elastic force of the second spring can be applied to the sliding pin through the stop block.

[0011] Preferably, the side of the stop is provided with a ball bearing, which is slidably connected to the inner surface of the cover. The ball bearing reduces the relative friction between the stop and the cover.

[0012] Preferably, a rubber retaining bead is fixedly connected to the bottom of the baffle, and the rubber retaining bead engages with the cover. The rubber retaining bead provides auxiliary fixation for the baffle.

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

[0014] 1. This utility model protects the battery cell by setting a split structure consisting of an outer shell and a cover on the outside of the battery cell. The cover is provided with a spring-supported pin with a beveled block and a sliding pin. The sliding pin can be restricted by a baffle on the cover. In this way, the pin can be inserted laterally into the outer shell by the cooperation of the sliding pin and the beveled block. Thus, the battery cell can be disassembled and assembled from the outer shell and the cover by simply controlling the engagement and disengagement between the pin and the outer shell.

[0015] 2. This utility model has a hollow outer shell structure, and a heat-conducting plate with fins is provided on the side of the outer shell. The heat-conducting plate and fins penetrate the inner and outer walls of the outer shell respectively. The heat-conducting plate is in contact with the battery cell, while the fins extend to the outside. This not only ensures the protection of the battery cell by the outer shell, but also ensures the heat dissipation of the battery cell. Attached Figure Description

[0016] Figure 1 This is a perspective view of the overall structure of this utility model;

[0017] Figure 2 This utility model Figure 1 Schematic diagram of local structure Figure 1 ;

[0018] Figure 3 This utility model Figure 1 Schematic diagram of local structure Figure 2 ;

[0019] Figure 4 This utility model Figure 1 A front sectional view;

[0020] Figure 5 This utility model Figure 4 A magnified view of the local structure;

[0021] Figure 6 This utility model Figure 5 Enlarged view of point A;

[0022] Figure 7 This utility model Figure 5 A schematic diagram of the convex-shaped pivot structure.

[0023] In the diagram: 1. Battery cell; 2. Outer casing; 3. Heat-conducting plate; 4. Fins; 5. Shell cover; 6. Guide rod; 7. Pin; 8. Spring 1; 9. Inclined block; 10. Fixing ring; 11. Sliding pin; 12. Stop block; 13. Spring 2; 14. Ball bearing; 15. Baffle plate; 16. T-shaped pivot pin; 17. Rubber retaining ball. Detailed Implementation

[0024] 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.

[0025] Please see Figures 1-6A protective battery cell casing includes a battery cell 1, a casing 2 slidably sleeved on the outer side of the battery cell 1, a casing cover 5 snapped onto the top of the casing 2, and the casing cover 5 slidably connected to the outside of the battery cell 1. A guide rod 6 is fixedly connected to the inner surface of the casing cover 5, and a pin 7 is slidably connected to the outer side of the guide rod 6. The pin 7 passes through the casing cover 5 and is slidably connected to the casing cover 5. The pin 7 is inserted into the casing 2. A spring 8 is provided inside the pin 7. One end of the spring 8 is fixedly connected to the guide rod 6, and the other end of the spring 8 is fixedly connected to the inner surface of the pin 7. The spring 8 allows the reaction force to be applied to the pin 7, providing auxiliary resetting. A ramp block 9 is fixedly connected to the pin 7. A fixing ring 10 is fixedly connected inside the cover 5. A sliding pin 11 is slidably connected inside the fixing ring 10, penetrating the fixing ring 10. The lower end of the sliding pin 11 has a hemispherical portion that abuts against the ramp block 9. A stop block 12 is fixedly connected to the pin of the sliding pin 11, and the stop block 12 is slidably connected inside the cover 5. A spring 13 is sleeved on the outer side of the pin of the sliding pin 11. The stop block 12, in conjunction with the fixing ring 10, facilitates the fixation of the spring 13. One end of the spring 13 is fixedly connected to the fixing ring 10, and the other end is fixedly connected to the stop block 12. The elastic force of the spring 13 can be applied to the sliding pin 11 through the stop block 12. A ball bearing 14 is provided on the side of the stop block 12, and the ball bearing 14 is slidably connected to the inner surface of the cover 5. By setting the ball bearing 14, the relative friction between the stop block 12 and the cover 5 can be reduced.

[0026] Please see Figures 1-5 The inner sides of the outer casing 2 are symmetrically fixedly connected to heat-conducting plates 3, with one side of the heat-conducting plate 3 penetrating through the outer casing 2 and the other side of the heat-conducting plate 3 contacting the outer walls of the battery cell 1 on both sides. Fins 4 are fixedly connected to the heat-conducting plates 3, penetrating through the outer casing 2 and slidably connected to it. The heat-conducting plates 3 and fins 4 increase the heat dissipation capacity of the outer casing 2. The outer casing 2 has a double-layer hollow structure, and the outer layer has strip-shaped slots for the fins 4 to pass through.

[0027] Please see Figure 5 , Figure 7 A raised pivot pin 16 is rotatably connected to the top of the cover 5. A retaining plate 15 is fixedly connected to the top of the raised pivot pin 16. The retaining plate 15 abuts against the hemispherical part of the top of the sliding pin 11. The retaining plate 15 is slidably connected to the cover 5. A rubber retaining bead 17 is fixedly connected to the bottom of the retaining plate 15. The rubber retaining bead 17 engages with the cover 5. The rubber retaining bead 17 provides auxiliary fixation for the retaining plate 15.

[0028] The specific implementation process of this utility model is as follows: In use, first insert the battery cell 1 into the outer shell 2, then fasten the shell cover 5 on the top of the outer shell 2 and the battery cell 1, and then push the sliding pin 11 downward. The sliding pin 11 compresses the spring 13 through the stop block 12, and the lower end of the sliding pin 11 cooperates with the inclined block 9, which allows the pin 7 to move laterally and be inserted laterally into the corresponding position of the outer shell 2. Then rotate the baffle 15 so that the rubber ball 17 on the baffle 15 is inserted into the shell cover 5. In this way, the baffle 15 restricts the upper end of the sliding pin 11, which can ensure the stability of the connection between the shell cover 5 and the outer shell 2. At this time, the battery cell 1 is under the joint protection of the outer shell 2 and the shell cover 5 and is not easily damaged. At the same time, the outer shell 2 is provided with a heat-conducting plate 3 with fins 4, which can dissipate the heat of the battery cell 1 to the outside.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A protective casing for a battery cell, comprising a battery cell (1), characterized in that: A housing (2) is slidably sleeved on the outside of the battery cell (1). A cover (5) is snapped onto the top of the housing (2), and the cover (5) is slidably connected to the outside of the battery cell (1). A guide rod (6) is fixedly connected to the inner surface of the cover (5). A pin (7) is slidably connected to the outer side of the guide rod (6). The pin (7) passes through the cover (5) and is slidably connected to the cover (5). The pin (7) is inserted into the housing (2). A beveled block (9) is fixedly connected to the pin (7). The inside of the cover (5) is fixed. A fixed ring (10) is connected, and a sliding pin (11) is slidably connected inside the fixed ring (10). The sliding pin (11) is set through the fixed ring (10). The lower end of the sliding pin (11) is provided with a hemispherical part that abuts against the inclined surface of the inclined block (9). The top of the shell cover (5) is rotatably connected with a convex pivot pin (16). The top of the convex pivot pin (16) is fixedly connected with a baffle (15). The baffle (15) abuts against the hemispherical part at the top of the sliding pin (11). The baffle (15) is slidably connected to the shell cover (5).

2. The battery cell casing with protective function according to claim 1, characterized in that: Heat-conducting plates (3) are symmetrically fixedly connected to the two sides inside the outer shell (2), and one side of the heat-conducting plate (3) is set through the outer shell (2). The other side of the heat-conducting plate (3) is in contact with the outer walls of the two sides of the battery cell (1). Fins (4) are fixedly connected to the heat-conducting plate (3). The fins (4) penetrate the outer shell (2) and are slidably connected to the outer shell (2).

3. A battery cell casing with protective function according to claim 1, characterized in that: The pin (7) is provided with a spring (8) inside. One end of the spring (8) is fixedly connected to the guide rod (6), and the other end of the spring (8) is fixedly connected to the inner surface of the pin (7).

4. A battery cell casing with protective function according to claim 1, characterized in that: A stop (12) is fixedly connected to the pin body of the sliding pin (11), and the stop (12) is slidably connected to the inside of the shell cover (5). A spring (13) is sleeved on the outside of the pin body of the sliding pin (11).

5. A battery cell casing with protective function according to claim 4, characterized in that: One end of the second spring (13) is fixedly connected to the fixed ring (10), and the other end of the second spring (13) is fixedly connected to the stop block (12).

6. A battery cell casing with protective function according to claim 4, characterized in that: The side of the stop (12) is provided with a ball (14), which is slidably connected to the inner surface of the cover (5).

7. A battery cell casing with protective function according to claim 1, characterized in that: A rubber bead (17) is fixedly connected to the bottom of the baffle (15), and the rubber bead (17) is engaged with the cover (5).

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