Quick disassembly and assembly structure of power battery

Abstract

The utility model provides a quick disassembly and assembly structure of a power battery. The quick disassembly and assembly structure comprises a quick disassembly and assembly joint and a positioning pin, the quick disassembly and assembly connector comprises a vehicle body end connector, a battery end connector and a sleeve. The vehicle body end connector is provided with a locking spring, a steel ball and an elastic check ring. A plurality of cylindrical holes are distributed around the center of the vehicle body end connector at equal intervals in an annular array mode and used for containing steel balls. An annular semicircular groove is formed in the end of the vehicle body end connector and used for fixing the elastic check ring and preventing the steel ball and the sleeve from falling off. And the battery end joint is provided with an annular trapezoidal groove for accommodating the steel ball. When the battery is installed, the sleeve is pushed upwards, and the pressing force on the steel ball is relieved. The quick disassembly and assembly structure for the power battery is simple and convenient to operate, and can realize quick battery replacement of the power battery and quick separation of the power battery when the power battery is on fire.

Description

Technical Field

[0001] This utility model relates to the field of electric vehicle technology, specifically to a quick-release and assembly structure for a power battery. Background Technology

[0002] With the increasing number of traditional gasoline-powered vehicles, environmental pollution has become increasingly serious. As an important component of green transportation, new energy vehicles have become a focus of attention for governments, the automotive industry, and consumers worldwide in recent years. Against this backdrop, my country's new energy vehicle industry has achieved rapid development, ranking first in the world in terms of production, sales, and exports, and has built a complete and highly competitive industrial chain.

[0003] However, there is currently no suitable fast battery swapping structure when it is necessary to increase the driving range.

[0004] To address these issues, this invention proposes a quick-release and reassembly structure for power batteries. When it is necessary to increase the driving range, this structure can quickly swap batteries in a very short time. Utility Model Content

[0005] The purpose of this invention is to provide a quick-release structure for power batteries to enable rapid battery swapping.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A quick-release structure for a power battery is disclosed, aiming to provide a connector structure that is easy to operate and allows for quick disassembly and installation of the power battery. It includes a vehicle-side connector, a battery-side connector, and a sleeve mounted on the vehicle-side connector. The vehicle-side connector is threaded to the vehicle body, and the battery-side connector is threaded to the battery box mounting plate. Specifically, it includes a quick-release connector and a positioning pin. The power battery includes a battery box, a battery cover, and battery modules. The quick-release connector and positioning pin are used for quick disassembly, installation, and positioning of the battery box, battery cover, and battery modules. The quick-release connector includes a vehicle-side connector and a battery-side connector, and the vehicle-side connector is equipped with a sleeve.

[0008] The quick-release structure for the power battery in this invention has two practical applications. The first is for rapid detachment of the power battery in case of fire, involving only the disassembly process. First, the sleeve is pushed upwards. Under gravity, the power battery, along with its end connector, moves downwards. The upper side of the annular trapezoidal groove presses against the steel ball, causing the steel ball to move radially outwards. The power battery detaches from the vehicle body. After the thrust applied to the sleeve is released, the sleeve returns to its original position under the restoring force of the locking spring. The second is for battery swapping, including both disassembly and installation. The disassembly process is essentially the same as in the first scenario. The power battery installation process is basically the reverse of the disassembly process. However, to further save installation time, the thrust applied to the sleeve is not released after the battery is removed. A lift is used to raise the fully charged battery. First, the positioning pin guides and positions the battery. Then, the battery end connector is inserted into the vehicle end connector. Once it reaches the corresponding position, the thrust applied to the sleeve is released. Under the restoring force of the locking spring, the sleeve returns to its original position, and the steel ball locks the battery end connector and the vehicle end connector.

[0009] In an optimized configuration, the locating pin comprises a cylindrical section and a conical section, with the conical section used for guiding and the cylindrical section used for final positioning. Specifically, the locating end of the locating pin is cylindrical, and the guiding end is conical.

[0010] The positioning pin is installed on the upper surface of the intersection of the longitudinal plate and the middle transverse plate of the battery box. The battery cover has an elongated groove at the corresponding position to provide working space for the positioning pin.

[0011] The optimized version includes several cylindrical holes for accommodating steel balls.

[0012] In an optimized configuration, a circular rubber pad is provided at the bottom of the blind hole of the vehicle body connector, which serves to mitigate impact when connected to the battery connector. The rubber pad is circular in shape and matches the cross-section of the blind hole. Specifically, a circular rubber pad is provided at the bottom of the blind hole of the vehicle body connector, and its shape matches the cross-section of the blind hole of the vehicle body connector.

[0013] Optimized, the diameter of the cylindrical hole matches the diameter of the steel ball.

[0014] On the vehicle body end connector, the cylindrical holes are arranged in a circular array at equal intervals around its axis, and the number of steel balls is the same as the number of cylindrical holes.

[0015] Near the lower end of the vehicle body end connector, there is an annular semi-circular groove with a semi-circular cross-section, used to fix the elastic retaining ring.

[0016] The diameter of the elastic retaining ring should be slightly smaller than the diameter of the annular semicircular groove in order to form a clamping force on the annular semicircular groove.

[0017] The optimized elastic retaining ring can prevent the sleeve from falling off, and when it cooperates with the sleeve, it can also prevent the steel ball from sliding out of the vehicle body end joint structure.

[0018] A locking spring is installed above the cylindrical hole on the vehicle body end connector to reset the sleeve and thus press the steel ball.

[0019] An annular trapezoidal groove is provided on the battery terminal, with a trapezoidal cross-section, to accommodate a steel ball when locked. When the steel ball is in tangential contact with one of the inclined surfaces, there should be a certain side clearance between the surface of the steel ball and the other inclined surface.

[0020] During disassembly, the trapezoidal cross-section of the annular trapezoidal groove allows the steel ball to slide smoothly along the inclined surface.

[0021] The advantages of this utility model are:

[0022] 1. In practical application, the quick-release structure for power batteries in this utility model first pushes the sleeve upward to remove the clamping force applied to the outside of the steel ball, and the battery detaches from the vehicle body under its own weight. When battery replacement is required, the operation process is reversed. Compared with the prior art, since the quick-release structure relies on the sleeve to squeeze the steel ball, and then connects the vehicle end connector and the battery end connector through the steel ball, it can realize battery replacement operation under normal circumstances, as well as battery quick detachment operation in emergency situations such as battery fire, thereby improving battery replacement efficiency and enhancing safety performance.

[0023] 2. When the battery terminal connector is inserted into the bottom of the blind hole of the vehicle terminal connector, the steel ball falls into the annular trapezoidal groove of the battery terminal connector, which can realize the quick positioning of the steel ball locking position. The bottom of the blind hole of the vehicle terminal connector is equipped with a circular rubber pad, which can reduce the impact of docking with the battery terminal connector.

[0024] 3. The battery box is equipped with a positioning pin, and the conical section is used for guidance and centering, which can improve the accuracy and efficiency of the docking of the battery end connector and the vehicle body end connector. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the quick-disassembly and assembly structure of the power battery in an embodiment of this utility model;

[0026] Figure 2 This is an exploded view of the quick-assembly and disassembly structure of the power battery in an embodiment of this utility model;

[0027] Figure 3 This is a full sectional view of the quick-disassembly and assembly structure of the power battery in this embodiment of the present utility model;

[0028] Figure 4 This is another perspective schematic diagram of the power battery and its quick-disassembly structure in the embodiment of this utility model;

[0029] Figure 5 As an embodiment of this utility model Figure 4A magnified view of the center positioning pin structure (partial view A);

[0030] Figure 6 This is a flowchart illustrating the quick assembly and disassembly process of the power battery in this embodiment of the present invention.

[0031] In the diagram: 1. Power battery; 2. Quick-release connector; 3. Positioning pin; 4. Steel ball; 5. Locking spring; 6. Elastic retaining ring; 7. Circular rubber pad; 11. Battery box; 12. Battery cover; 13. Battery module; 111. First mounting plate; 112. Second mounting plate; 113. Third mounting plate; 121. Elongated groove; 21. Vehicle body end connector; 22. Battery end connector; 23. Sleeve; 31. Positioning end; 32. Guide end Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of this utility model.

[0033] like Figure 1 As shown, a quick-release structure for a power battery includes a power battery 1, a quick-release connector 2, and a positioning pin 3.

[0034] like Figure 2 As shown, the quick-release connector includes a vehicle body end connector 21 and a battery end connector 22. The vehicle body end connector 21 is threaded to the vehicle body, and the battery end connector 22 is threaded to the first mounting plate 111, the second mounting plate 112 and the third mounting plate 113 of the power battery 1.

[0035] like Figure 2 As shown, the side of the vehicle body end connector 21 has 6 cylindrical holes for accommodating the same number of steel balls 4.

[0036] Furthermore, the end of the vehicle body connector 21 is provided with an annular semicircular groove for fixing the elastic retaining ring 6. The cross-section of the annular semicircular groove is semicircular and matches the shape of the elastic retaining ring 6. The diameter of the elastic retaining ring 6 is slightly smaller than the diameter of the annular semicircular groove.

[0037] Furthermore, the vehicle body end connector 21 is equipped with a locking spring 5 and a sleeve 23, and the restoring force of the locking spring 5 can cause the sleeve 23 to reset after the thrust is removed.

[0038] like Figure 2As shown, the battery terminal 22 has an annular trapezoidal groove 221 for accommodating the steel ball 4 when locked.

[0039] like Figure 2 , 3 As shown, the steel ball 4, under the compression of the sleeve 23, connects and locks the vehicle end connector 21 and the battery end connector 22 together.

[0040] like Figure 3 As shown, a circular rubber pad 7 is installed at the bottom of the blind hole of the vehicle body end connector 21, which can alleviate the impact on the bottom of the blind hole when the battery end connector 22 is inserted into the vehicle body end connector 21.

[0041] like Figure 4 , 5 As shown, a positioning pin 3 is installed at the intersection of the two side longitudinal plates and the middle transverse plate of the power battery box 11. The positioning pin includes a cylindrical section 31 and a conical section 32. The conical section 32 is used for guiding and centering, and the cylindrical section 31 is used for final positioning.

[0042] Furthermore, elongated grooves 121 are provided on both sides of the battery cover plate 12 corresponding to the positions of the positioning pins 3, so that the positioning pins 3 can pass through the battery cover plate 12, leaving working space.

[0043] Working principle:

[0044] The quick-release structure for the power battery in this invention has two applications: rapid disconnection in case of battery fire and normal battery swapping. The disassembly process is as follows: Figure 6 As shown.

[0045] In the first scenario, the rapid detachment of the power battery 1 upon catching fire only involves the disassembly process. When the smoke sensor detects a fire in the power battery, the control panel sends a signal to drive the electric cylinder to push the sleeve 23 upward. Under the action of gravity, the power battery 1, along with the battery terminal connector 21, moves downward. The upper side of the annular trapezoidal groove 221 presses against the steel ball 4, and the steel ball 4 moves radially outward. The power battery 1 detaches from the vehicle body. After the thrust applied to the sleeve 23 is released, the sleeve 23 returns to its original position under the restoring force of the locking spring 5.

[0046] The second scenario involves battery swapping, including disassembly and installation. The disassembly process is essentially the same as in the first scenario. The installation of the power battery 1 is basically the reverse of the disassembly process. However, to further save installation time, the thrust applied to the sleeve 23 is not released after the power battery 1 is removed. Using a lift vehicle to raise the fully charged power battery, the positioning pin 3 first guides and positions it. Then, the battery end connector 22 is inserted into the vehicle body end connector 21. After reaching the circular rubber pad 7, the thrust applied to the sleeve 23 is released. Under the restoring force of the locking spring 5, the sleeve 23 returns to its original position, and the steel ball 4 locks the battery end connector 22 and the vehicle body end connector 21. This utility model provides a quick-release structure for a power battery, including a quick-release connector and a positioning pin. The quick-release connector includes a vehicle body end connector, a battery end connector, and a sleeve. The vehicle body end connector is equipped with a locking spring, a steel ball, and an elastic retaining ring. The vehicle body end connector has several cylindrical holes arranged in a circular array around its center at equal intervals to accommodate the steel ball. The vehicle body end connector has an annular semi-circular groove to secure the elastic retaining ring and prevent the steel ball and sleeve from falling off. The battery end connector has an annular trapezoidal groove to accommodate the steel ball. When installing the battery, the sleeve is pushed upwards to release the pressure on the steel ball. When the battery end connector is inserted into the vehicle body end connector to the appropriate position, the steel ball falls into the annular trapezoidal groove of the battery end connector. At this point, the pushing force is removed, and the sleeve returns to its original position under the restoring force of the locking spring, restoring the pressure on the steel ball. The steel ball then locks the vehicle body end connector and the battery end connector in place. The disassembly process is performed by reversing the operation. This utility model's quick-release structure for power batteries is simple and convenient to operate, enabling rapid battery swapping and quick detachment in case of a power battery fire.

[0047] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of this utility model.

Claims

1. A quick-assembly and disassembly structure for a power battery, characterized in that, The power battery (1) includes a battery box (11), a battery cover (12), and a battery module (13), including a quick-release connector (2) and a positioning pin (3). The quick-release connector (2) and the positioning pin (3) are used for quick disassembly and positioning of the battery box (11), the battery cover (12), and the battery module (13). The battery box (11) includes a first mounting plate (111), a second mounting plate (112), and a third mounting plate (113) connected in sequence. The second mounting plate (112) is equipped with a quick-release connector (2). The quick-release connector (2) includes a vehicle end connector (21) and a battery end connector (22). The vehicle end connector (21) is provided with a sleeve (23).

2. The quick-release structure for the power battery according to claim 1, characterized in that, The vehicle body end connector (21) is threaded to the vehicle chassis, and the battery end connector (22) is threaded to the first mounting plate (111), the second mounting plate (112), and the third mounting plate (113).

3. The quick-release structure for the power battery according to claim 2, characterized in that, The bottom of the blind hole of the vehicle body end connector (21) is provided with a circular rubber pad (7), the shape of which matches the cross-section of the blind hole of the vehicle body end connector (21).

4. The quick-release structure for the power battery according to claim 3, characterized in that, The vehicle body end connector (21) is equipped with a steel ball (4), a locking spring (5), and an elastic retaining ring (6).

5. The quick-release structure for the power battery according to claim 4, characterized in that, The battery terminal (22) has an annular trapezoidal groove (221).

6. The quick-release structure for the power battery according to claim 5, characterized in that, Positioning pins (3) are installed at the intersection of the two side longitudinal plates and the middle transverse plate of the battery box (11).

7. The quick-release structure for the power battery according to claim 6, characterized in that, The positioning end (31) of the positioning pin (3) is cylindrical, and the guide end (32) is conical.

8. The quick-release structure for the power battery according to claim 7, characterized in that, The battery cover (12) has elongated grooves (121) on both sides corresponding to the positions of the positioning pins (3).

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