Automatic power-off constant-voltage charging high-safety lithium battery

Abstract

The utility model relates to the technical field of lithium batteries, in particular to an automatic power-off constant-voltage charging high-safety lithium battery, which comprises a battery shell, a plurality of polar plates positioned in the battery shell, a battery top cover positioned at the top of the battery shell and used for sealing, and two upper ports penetrating through and extending to the top end of the battery top cover and used for power transmission, the top end of the polar plate is provided with a partition plate used for isolating battery liquid from leaking, one end of the partition plate is provided with two lower ports used for power transmission, the multiple lower ports are matched with the upper port in position, and connecting ends used for controlling circuit communication are arranged between the upper port and the lower ports in a sliding mode. According to the utility model, the effect of cutting off the power of the rechargeable battery is realized by changing the loop, the safety problem caused by heating and fire due to overcharge of the battery caused by misuse of the charging device is greatly reduced, and the safety performance of the battery is improved through the lithium battery design that the power supply is cut off when necessary to protect the battery from being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium batteries, in particular to a high-safety lithium battery with automatic power-off constant voltage charging. Background Art

[0002] Constant voltage charging is mainly to avoid irreversible damage to lithium batteries caused by overcharging. Constant voltage charging also helps to improve charging efficiency and extend battery life. By controlling the charging voltage and current, constant voltage charging can ensure that the battery is charged in the best state, thereby improving charging speed and energy utilization efficiency. At the same time, constant voltage charging can also avoid damage to the battery due to overcharging or over-discharging, thereby extending the battery life.

[0003] Constant voltage lithium batteries are prone to heat during charging and use. If the temperature is too high, the safety of the battery will be affected. If safety measures are not in place, constant voltage charging may even cause the temperature to be too high and explode. In the process of charging lithium batteries, there may be a situation where non-dedicated chargers are used to charge them, and the automatic power off cannot be achieved through one end of the charger, causing the battery to overheat and catch fire, posing a safety hazard.

[0004] Therefore, it is necessary to invent a high-safety lithium battery with automatic power-off constant voltage charging to solve the above problems. Utility Model Content

[0005] In order to address the deficiencies in the prior art, the purpose of the utility model is to provide a high-safety lithium battery with automatic power-off and constant voltage charging, which solves the problem in the prior art of using non-dedicated chargers to charge lithium batteries, and the inability to automatically cut off the power at one end of the charger, resulting in battery overheating and fire, causing safety hazards.

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

[0007] A high-safety lithium battery with automatic power-off constant voltage charging, comprising a battery shell, a plurality of pole plates located inside the battery shell, a battery top cover located on the top of the battery shell for sealing, and two upper ports for power transmission that penetrate and extend to the top of the battery top cover, a partition for isolating battery liquid from leaking is provided on the top of the pole plate, two lower ports for power transmission are installed at one end of the partition, the positions of the plurality of lower ports and the upper ports are adapted, a connecting end for controlling circuit connection is slidably provided between the upper port and the lower port, a guide baffle for positioning and guiding is provided on one side of the connecting end, one end of the plurality of guide baffles is connected to an insulating connecting rod, a power transmission rod that can control the circuit connection of the two upper ports is provided on the opposite side of the connecting end, and the insulating connecting rod and the power transmission rod are both connected to a plurality of guide rails for controlling their sliding directions.

[0008] As a preferred solution of the utility model, a mounting plate is detachably connected under the battery top cover, a connecting block is provided at the bottom of the mounting plate, a telescopic component for pushing the guide rail is provided at one end of the connecting block, and a battery management module for controlling and monitoring the battery power and controlling the telescopic distance of the telescopic component is provided at the top of the mounting plate.

[0009] As a preferred solution of the utility model, sliding grooves for controlling the sliding direction of the guide rails are provided on both sides of the telescopic assembly.

[0010] As a preferred solution of the utility model, a fixing bolt for connecting with the bottom end of the battery top cover is provided at the corner of the mounting plate, the fixing bolt passes through the battery management module and extends to the interior of the battery top cover, and the outer wall of the fixing bolt is provided with a positioning ring for adjusting and controlling the relative position of the battery management module and the battery top cover.

[0011] As a preferred solution of the utility model, the outer side wall of the power transmission rod is covered with insulating material, and positioning baffles for guiding and fixing are provided at both ends of the power transmission rod.

[0012] As a preferred solution of the utility model, the guide rails on both sides are commonly connected with a connecting rod for controlling the reciprocating sliding of the guide rails, and one end of the connecting rod is detachably connected to the telescopic end surface of the telescopic assembly.

[0013] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0014] In the utility model, the purpose of automatically cutting off the power of the lithium battery at the battery end during constant voltage charging is achieved by controlling the connection between the upper port and the lower port. During use, the battery is usually used in combination of multiple groups of batteries. During charging, some batteries are fully charged and some batteries are not fully charged. When the battery is charged, the upper port is connected to the lower port through the connecting end to form a complete charging circuit. When this battery is fully charged and the remaining batteries are not fully charged, the connecting rod is pushed by the telescopic component to control the guide rail, the power transmission rod at one end of the guide rail and the insulating connecting rod to slide, and the connecting end is separated from the upper port and the lower port. At the same time, as the power transmission rod slides, the power transmission rod stays below the upper port through the positioning baffle, and the two upper ports are connected to the power transmission rod to form a circuit, stop charging the internal plates of the battery, and continue to charge the remaining batteries. The effect of cutting off the power of the rechargeable battery is achieved by changing the circuit, which greatly reduces the safety problem caused by overcharging of the battery due to misuse of the charging device, thereby heating and catching fire. The lithium battery design that cuts off the power supply when necessary to protect the battery from damage improves the safety performance of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall cross-sectional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the overall internal structure of the battery of the utility model;

[0017] Figure 3 For the utility model Figure 2 The enlarged structural diagram at A in the middle;

[0018] Figure 4 It is a bottom view structural diagram of the telescopic component of the utility model.

[0019] Explanation of the accompanying drawings: 1. Battery casing; 2. Battery top cover; 3. Upper port; 4. Plate; 5. Partition; 6. Lower port; 7. Connection end; 8. Guide baffle; 9. Insulating connecting rod; 10. Mounting plate; 11. Guide rail; 12. Slide groove; 13. Battery management module; 14. Connecting block; 15. Fixing bolt; 16. Positioning ring; 17. Telescopic assembly; 18. Power transmission rod; 19. Connecting rod; 20. Positioning baffle. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings.

[0021] The following embodiments are only used to more clearly illustrate the technical solution of the present utility model, and are not intended to limit the protection scope of the present utility model.

[0022] The utility model provides Figure 1-4 The lithium battery with automatic power-off constant voltage charging and high safety shown in the figure comprises a battery shell 1, a plurality of pole plates 4 located inside the battery shell 1, a battery top cover 2 located on the top of the battery shell 1 for sealing, and two upper ports 3 for power transmission that penetrate and extend to the top of the battery top cover 2, a partition 5 for isolating battery liquid from leaking is arranged on the top of the pole plate 4, two lower ports 6 for power transmission are installed at one end of the partition 5, the positions of the plurality of lower ports 6 are adapted to the upper ports 3, a connection terminal 7 for controlling circuit connection is slidably arranged between the upper ports 3 and the lower ports 6, one of the connection terminals 7 is A guide baffle 8 for positioning and guiding is arranged on the side, and one end of the guide baffles 8 is connected to an insulating connecting rod 9. A power transmission rod 18 that can control the circuit connection between the two upper ports 3 is arranged on the opposite side of the connecting end 7. The insulating connecting rod 9 and the power transmission rod 18 are both connected to a plurality of guide rails 11 that control their sliding directions. By setting the connecting end 7 and the power transmission rod 18 that can be changed in position, the purpose of protecting the battery can be achieved by changing the charging circuit. By setting the guide baffle 8, the staying position of the connecting end 7 can be accurately controlled to avoid problems in circuit transmission due to inaccurate positioning, thereby avoiding safety hazards.

[0023] A mounting plate 10 is detachably connected to the bottom of the battery top cover 2, a connecting block 14 is provided at the bottom of the mounting plate 10, a telescopic component 17 for pushing the guide rail 11 is provided at one end of the connecting block 14, and a battery management module 13 for controlling and monitoring the battery power and controlling the telescopic distance of the telescopic component 17 is provided at the top of the mounting plate 10. The battery management module 13 monitors the battery to ensure that the relevant factors affecting the battery safety are within a reasonable range.

[0024] Slide grooves 12 for controlling the sliding direction of the guide rail 11 are arranged on both sides of the telescopic assembly 17. The arrangement of the slide grooves 12 ensures that the power transmission rod 18 will not deviate after the guide rail 11 slides multiple times, thereby increasing the service life of the equipment.

[0025] A fixing bolt 15 for connecting to the bottom end of the battery top cover 2 is provided at the corner of the mounting plate 10. The fixing bolt 15 passes through the battery management module 13 and extends to the interior of the battery top cover 2. The outer wall of the fixing bolt 15 is provided with a positioning ring 16 for adjusting and controlling the relative position of the battery management module 13 and the battery top cover 2. The relative distance between the mounting plate 10 and the battery top cover 2 is controlled by setting the positioning ring 16 to ensure that there is enough space for heat dissipation of the battery management module 13.

[0026] The outer wall of the power transmission rod 18 is coated with insulating material, and both ends of the power transmission rod 18 are provided with positioning baffles 20 for guiding and fixing. The insulating material wrapped by the outer wall can avoid sparks when the circuit is connected, thereby preventing safety hazards.

[0027] The guide rails 11 on both sides are commonly connected with a connecting rod 19 for controlling the reciprocating sliding of the guide rails 11. One end of the connecting rod 19 is detachably connected to the telescopic end surface of the telescopic assembly 17. The setting of the connecting rod 19 can control the synchronous sliding of the guide rails 11 on both sides to improve the stability of the mechanism operation.

[0028] The utility model realizes the purpose of automatic power off at the battery end of the lithium battery during constant voltage charging by controlling the connection between the upper port 3 and the lower port 6. During use, the battery is usually used in combination of multiple groups of batteries. During charging, some batteries are fully charged and some batteries are not fully charged. When the battery is charged, the upper port 3 is connected with the lower port 6 through the connecting end 7 to form a complete charging circuit. When this battery is fully charged and the remaining batteries are not fully charged, the connecting rod 19 is pushed by the telescopic component 17 to control the guide rail 11, the power transmission rod 18 at one end of the guide rail 11, and the insulating connecting rod 9 slides, the connection end 7 is separated from the upper port 3 and the lower port 6, and at the same time, as the power transmission rod 18 slides, the power transmission rod 18 stays below the upper port 3 through the positioning baffle 20, and the two upper ports 3 are connected to the power transmission rod 18 to form a loop, stop charging the internal plates 4 of the battery, and continue to charge the remaining batteries. The effect of powering off the rechargeable battery is achieved by changing the loop, which greatly reduces the safety problem caused by overcharging of the battery and thus heating and fire due to misuse of the charging device. The lithium battery design cuts off the power supply when necessary to protect the battery from damage, thereby improving the safety performance of the battery.

[0029] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A high-safety lithium battery with automatic power-off constant voltage charging, characterized in that: The invention comprises a battery housing (1), a plurality of pole plates (4) located inside the battery housing (1), a battery top cover (2) located at the top of the battery housing (1) for sealing, and two upper ports (3) for power transmission penetrating through and extending to the top of the battery top cover (2); a partition (5) for isolating battery liquid from leaking is arranged at the top of the pole plate (4); two lower ports (6) for power transmission are installed at one end of the partition (5); the positions of the plurality of lower ports (6) and the upper ports (3) are adapted; a connection end (7) for controlling circuit connection is slidably arranged between the upper ports (3) and the lower ports (6); a guide baffle (8) for positioning and guiding is arranged on one side of the connection end (7); one end of the plurality of guide baffles (8) is connected to an insulating connection rod (9); a power transmission rod (18) for controlling circuit connection of the two upper ports (3) is arranged on the opposite side of the connection end (7); and the insulating connection rod (9) and the power transmission rod (18) are both connected to a plurality of guide rails (11) for controlling their sliding directions.

2. The automatic power-off constant voltage charging high-safety lithium battery according to claim 1, characterized in that: A mounting plate (10) is detachably connected below the battery top cover (2); a connecting block (14) is provided at the bottom end of the mounting plate (10); a telescopic component (17) for pushing the guide rail (11) is provided at one end of the connecting block (14); and a battery management module (13) for controlling and monitoring the battery power and controlling the telescopic distance of the telescopic component (17) is provided at the top end of the mounting plate (10).

3. The automatic power-off constant voltage charging high-safety lithium battery according to claim 2, characterized in that: Slide grooves (12) for controlling the sliding direction of the guide rail (11) are provided on both sides of the telescopic assembly (17).

4. The automatic power-off constant voltage charging high-safety lithium battery according to claim 2, characterized in that: A fixing bolt (15) for connecting to the bottom end of the battery top cover (2) is provided at a corner of the mounting plate (10); the fixing bolt (15) passes through the battery management module (13) and extends to the interior of the battery top cover (2); and a positioning ring (16) for adjusting and controlling the relative position of the battery management module (13) and the battery top cover (2) is sleeved on an outer wall of the fixing bolt (15).

5. The automatic power-off constant voltage charging high-safety lithium battery according to claim 1, characterized in that: The outer side wall of the power transmission rod (18) is coated with insulating material, and positioning baffles (20) for guiding and fixing are provided at both ends of the power transmission rod (18).

6. The automatic power-off constant voltage charging high-safety lithium battery according to claim 1, characterized in that: The guide rails (11) on both sides are commonly connected to a connecting rod (19) for controlling the reciprocating sliding of the guide rails (11), and one end of the connecting rod (19) is detachably connected to the telescopic end surface of the telescopic assembly (17).

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