CN219090922U

CN219090922U - Safety charging and discharging device for lithium battery

Info

Publication number: CN219090922U
Application number: CN202320150654.7U
Authority: CN
Inventors: 黄永杰; 张涛; 陈丕山; 迟明怀
Original assignee: Beichen Advanced Recycling Technology Qingdao Co ltd
Current assignee: Beichen Advanced Recycling Technology Qingdao Co ltd
Priority date: 2023-02-08
Filing date: 2023-02-08
Publication date: 2023-05-30
Anticipated expiration: 2033-02-08

Abstract

The utility model relates to the technical field of safe charge and discharge of lithium ion batteries, and provides a safe charge and discharge device of a lithium battery, which comprises a box body and a liquid nitrogen tank, wherein an external thermal imager is arranged at the top end of the inner wall of the box body, a nitrogen pipeline penetrating into the bottom of the box body is arranged on the liquid nitrogen tank, a smoke detector is arranged on the inner wall of the box body, an industrial control touch screen is arranged on the box body, an AC/DC bidirectional power supply module is fixedly arranged on the inner wall of the box body, a charge and discharge positive electrode clamp and a charge and discharge negative electrode clamp are arranged on the AC/DC bidirectional power supply module, the industrial control touch screen controls the AC/DC bidirectional power supply module to cut off charge and discharge of the lithium battery, when the temperature continues to rise to reach a fire alarm threshold value or the smoke detector detects that smoke is generated, the industrial control touch screen controls a discharge valve motor to open a discharge valve assembly, and when the battery drops, the clamp is opened due to gravity, the liquid nitrogen tank is matched with the nitrogen pipeline to spray nitrogen gas for fire extinguishing.

Description

Safety charging and discharging device for lithium battery

Technical Field

The utility model relates to the technical field of safe charging and discharging of lithium ion batteries, in particular to a safe charging and discharging device of a lithium battery.

Background

With the great popularity of lithium batteries, it has become an indispensable part of our lives. The lithium battery has the advantages of high energy density, long cycle life, light weight, no memory effect and the like, however, the lithium battery is easy to generate thermal runaway in the charge and discharge process, and electrolyte is gasified when the temperature is too high, so that fire and explosion phenomena are caused, and huge potential safety hazards are caused to personal and property safety. In order to avoid the safety problem existing in the charging and discharging process of the lithium battery, the application provides a safety charging and discharging device of the lithium battery.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model aims to provide a safe charging and discharging device for a lithium battery.

In order to achieve the purpose, the technical scheme of the utility model is realized as follows:

the utility model provides a safe charge-discharge device of lithium cell, includes box and liquid nitrogen tank, external thermal imaging appearance is installed on box inner wall top, have one on the liquid nitrogen tank and wear into the nitrogen pipeline of bottom in the box, install a smoke detector on the box inner wall, install an industrial control touch-sensitive screen on the box, be fixed with AC/DC two-way power module on the box inner wall, have charge-discharge positive pole clamp and charge-discharge negative pole clamp on the AC/DC two-way power module, be fixed with an arc baffle between the box inner wall, the middle part of arc baffle is equipped with integrated into one piece's discharge box, the discharge valve subassembly of placing lithium cell is inside to have, just fixed one on the discharge box outer wall connects the discharge valve motor of discharge valve subassembly.

Preferably, the nitrogen pipeline is provided with an electric control valve, the external thermal imager is connected with the industrial control touch screen through an RJ45 Ethernet communication line, an audible-visual annunciator is fixed at the outer top end of the box body, the industrial control touch screen is connected with the AC/DC bidirectional power supply module through the RJ45 Ethernet communication line, and a pressure gauge is arranged on the liquid nitrogen tank.

Preferably, a frame is fixed on the inner wall of the box body, and an electric radiator fan is fixedly arranged on the inner wall of the frame through a bracket.

Preferably, a door opening and closing door is installed below the front face of the box body through a hinge, a door handle is arranged on the door opening and closing door, and a matched buckle is arranged on the door opening and closing door and the box body.

Preferably, a box door is arranged on the side face of the box body, the industrial control touch screen is arranged on the outer surface of the box door, and a box door handle is arranged on the box door.

Preferably, the discharge valve assembly comprises a rotary rod connected with the output end of the discharge valve motor, the rotary rod penetrates into the discharge box, external threads with opposite threads are engraved on the outer surfaces of two ends of the rotary rod, supporting clamps are sleeved on the two ends of the rotary rod in a threaded mode, a plurality of supporting blocks are fixedly arranged on the inner side walls of the supporting clamps, a traction rod penetrating through the supporting clamps is fixedly arranged between the inner walls of the discharge box, and a bearing fixed on the inner walls of the discharge box is sleeved on the other end of the rotary rod.

Preferably, the liquid nitrogen tank is connected to a supporting table with four rollers.

The beneficial effects of the utility model are as follows:

when the device is used, a lithium battery is placed in a lower charge-discharge area of a box body, namely the lithium battery is placed in a discharge box, the discharge valve assembly is controlled by a discharge valve motor to fix the lithium battery in the discharge box, a charge-discharge positive electrode clamp is connected with the positive electrode of the lithium battery, a charge-discharge negative electrode clamp is connected with the negative electrode of the lithium battery, at the moment, charge-discharge parameters are set on an industrial control touch screen, then after a start button on the industrial control touch screen is clicked, an AC/DC bidirectional power supply module starts to charge and discharge the lithium battery, in the charge-discharge process, an infrared thermal imager monitors temperature change of the lithium battery in real time and transmits temperature data to the industrial control touch screen, the industrial control touch screen controls the charge-discharge current of the lithium battery according to the temperature control AC/DC bidirectional power supply module, so that the heating value of the lithium battery is reduced, the temperature of the lithium battery is controlled, when the infrared thermal imager detects that the temperature rise of the lithium battery reaches an alarm threshold, the charge-discharge of the lithium battery is cut off by the AC/DC bidirectional power supply module, when the temperature rise fire alarm threshold is detected, or when a smoke detector detects that smoke is generated, the smoke sensor detects that the smoke sensor generates, the temperature sensor continuously, the discharge valve is opened by the liquid nitrogen, and the discharge valve is opened by the nitrogen box, and the nitrogen is opened by the nitrogen container.

Drawings

In the drawings:

FIG. 1 is a front view of the present utility model;

FIG. 2 is a schematic diagram of a case of the present utility model;

fig. 3 is a schematic view of a charge-discharge negative electrode clip according to the present utility model.

Reference numerals illustrate:

1. a case; 2. a liquid nitrogen tank; 3. an external thermal imager; 4. a nitrogen gas pipe; 5. a smoke detector; 6. an industrial control touch screen; 7. an AC/DC bidirectional power module; 8. a charge-discharge positive electrode clamp; 9. a charge-discharge negative electrode clamp; 10. an arc-shaped partition plate; 11. a discharging box; 12. a discharge valve motor; 13. a lithium battery; 14. an electric control valve; 15. an audible and visual alarm; 16. a pressure gauge; 17. a frame; 18. an electric radiator fan; 19. opening and closing a door; 20. a door handle; 21. a buckle; 22. a door; 23. a rotating rod; 24. a support clip; 25. a support block; 26. a traction rod; 27. and a support table.

Detailed Description

The present utility model will now be described in further detail with reference to the drawings and examples, wherein it is apparent that the examples described are only some, but not all, of the examples of the utility model. Embodiments and features of embodiments in this application may be combined with each other without conflict. All other embodiments, based on the embodiments of the utility model, which would be apparent to one of ordinary skill in the art without inventive effort are within the scope of the utility model.

It should be noted that, in the embodiment of the present utility model, directional indications (such as up, down, left, right, front, and rear … …) are referred to, and the directional indications are merely used to explain the relative positional relationship, movement conditions, and the like between the components in a specific posture such as the one shown in the drawings, and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, "a plurality of" means two or more. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed by the utility model.

Referring to the accompanying drawings 1-3 of the specification, the utility model provides a safe charging and discharging device for lithium batteries, comprising a box body 1 and a liquid nitrogen tank 2, wherein an external thermal imager 3 is arranged at the top end of the inner wall of the box body 1, a nitrogen pipeline 4 penetrating into the inner bottom of the box body 1 is arranged on the liquid nitrogen tank 2, a smoke detector 5 is arranged on the inner side wall of the box body 1, an industrial control touch screen 6 is arranged on the box body 1, an AC/DC bidirectional power module 7 is fixedly arranged on the inner wall of the box body 1, a charging and discharging positive electrode clamp 8 and a charging and discharging negative electrode clamp 9 are arranged on the AC/DC bidirectional power module 7, an arc-shaped partition board 10 is fixedly arranged between the inner walls of the box body 1, an integrally formed discharging box 11 is arranged in the middle of the arc-shaped partition board 10, a discharging valve component for placing a lithium battery 13 is arranged inside the discharging box 11, and a discharge valve motor 12 connected with the discharge valve assembly is fixed on the outer wall of the discharge box 11, when the device is used, a lithium battery 13 is placed in a lower charge-discharge area of the box body 1, namely, the lithium battery 13 is placed in the discharge box 11, the discharge valve assembly is controlled by the discharge valve motor 12 to fix the lithium battery in the discharge box 11, a charge-discharge positive electrode clamp 8 is used for connecting the positive electrode of the lithium battery, a charge-discharge negative electrode clamp 9 is connected with the negative electrode of the lithium battery, at the moment, charge-discharge parameters are set on the industrial control touch screen 6, then after a start button on the industrial control touch screen 6 is clicked, the AC/DC bidirectional power module 7 starts to charge and discharge the lithium battery, the thermal infrared imager 3 monitors the temperature change of the lithium battery in real time in the charge-discharge process and transmits the temperature data to the industrial control touch screen 6, the industrial control touch screen 6 controls the current of the AC/DC bidirectional power module 7 for charging and discharging the lithium battery 13 according to the temperature, so that the heating value of the lithium battery 13 is reduced, the temperature of the lithium battery is controlled, when the infrared thermal imager 3 detects that the temperature of the lithium battery rises to reach an alarm threshold, the industrial control touch screen 6 controls the AC/DC bidirectional power module 7 to cut off the charging and discharging of the lithium battery 13, when the temperature continues to rise to reach a fire alarm threshold or the smoke detector 5 detects smoke generation, the industrial control touch screen 6 controls the discharge valve motor 12 to open a discharge valve assembly, the battery drops, a clip is opened due to gravity when the battery drops, and nitrogen is sprayed out by the liquid nitrogen tank 2 in cooperation with the nitrogen pipeline 4 to extinguish the fire.

In an embodiment, referring to fig. 1-2 of the specification, the nitrogen pipeline 4 is provided with an electric control valve 14, the external thermal imager 3 is connected with the industrial control touch screen 6 through an RJ45 ethernet communication line, an audible and visual alarm 15 is fixed at the top end of the box body 1, the industrial control touch screen 6 is connected with the AC/DC bidirectional power module 7 through the RJ45 ethernet communication line, and a pressure gauge 16 is installed on the liquid nitrogen tank 2.

The nitrogen pipeline 4 is provided with an electric control valve 14, the opening of the nitrogen pipeline 4 can be controlled in real time, the battery falls on the bottom layer, and the audible and visual alarm 15 flashes a red light and sounds to remind operators of accident occurrence and to process in time.

In an embodiment, referring to fig. 1 of the specification, a frame 17 is fixed on the inner wall of the case 1, and an electric radiator fan 18 is fixed on the inner wall of the frame 17 through a bracket.

The cooling fan is also started in the whole process of charging and discharging the lithium battery, so that heat generated by the lithium battery 13 is timely dissipated, and the temperature of the lithium battery is reduced.

In an embodiment, referring to fig. 2 of the specification, a door opening/closing door 19 is installed below the front side of the case 1 through a hinge, a door handle 20 is disposed on the door opening/closing door 19, and a matched buckle 21 is disposed on the door opening/closing door 19 and the case 1.

The switch door 19 is connected with the box body through the hinge to realize opening and closing, and is fixed with the box body 1 through the buckle 21 when the switch door 19 is closed, so that the lithium battery can be ensured not to be influenced outside the box body when fire and explosion happen.

In an embodiment, referring to fig. 2 of the specification, a door 22 is installed on a side of the case 1, the industrial control touch screen 6 is installed on an outer surface of the door 22, and a door handle is provided on the door 22.

The door handle is used for opening the door, so that the battery can be better placed in the box body, and a plurality of air outlets for discharging hot air are needed to be designed on the door 22.

In an embodiment, referring to fig. 1 of the specification, the discharge valve assembly includes a rotating rod 23 connected to an output end of the discharge valve motor 12, the rotating rod 23 penetrates into the discharge box 11, external threads with opposite threads are engraved on outer surfaces of two ends of the rotating rod 23, supporting clips 24 are sleeved on two ends of the rotating rod 23, a plurality of supporting blocks 25 are fixedly arranged on inner side walls of the supporting clips 24, a traction rod 26 penetrating through the supporting clips 24 is fixedly arranged between inner walls of the discharge box 11, and bearings fixed on inner walls of the discharge box 11 are sleeved on the other ends of the rotating rod 23.

The battery is placed in the discharge box 11 in the box body, the discharge valve motor 12 is controlled to be opened, the rotating rod 23 is driven to rotate, the supporting clamps 24 are driven to move away from or close to each other, the two sides of the battery are clamped by the supporting clamps 24, the bottom of the battery is supported by the supporting blocks 25, the subsequent clamping support is completed, and the bottom of the discharge box 11 is in an opening shape.

In one embodiment, referring to fig. 1 of the specification, the liquid nitrogen tank 2 is connected to a support stand 27 with four rollers.

The liquid nitrogen tank 2 is integrally supported by a support table 27.

When the device is used, when the lithium battery 13 is placed in a lower charge-discharge area of the box body 1, namely the lithium battery 13 is placed in the discharge box 11, the discharge valve assembly is controlled by the discharge valve motor 12 to fix the lithium battery in the discharge box 11, the charge-discharge positive electrode clamp 8 is connected with the positive electrode of the lithium battery, the charge-discharge negative electrode clamp 9 is connected with the negative electrode of the lithium battery, at the moment, charge-discharge parameters are set on the industrial control touch screen 6, then after a start button on the industrial control touch screen 6 is clicked, the AC/DC bidirectional power supply module 7 starts to charge and discharge the lithium battery, in the charge-discharge process, the infrared thermal imager 3 monitors temperature change of the lithium battery in real time and transmits the temperature data to the industrial control touch screen 6, the industrial control touch screen 6 controls the charge-discharge current of the lithium battery 13 according to the temperature, so as to reduce the heating value of the lithium battery 13, control the temperature of the lithium battery is controlled, when the infrared thermal imager 3 detects that the temperature rise of the lithium battery reaches an alarm threshold, the industrial control touch screen 6 controls the AC/DC bidirectional power supply module 7 to cut off the charge-discharge of the lithium battery, when the discharge valve is opened by the nitrogen gas pump 6, or the discharge valve 2 is opened when the nitrogen gas is continuously detected by the discharge box 2, and the discharge valve 2 is opened, and the discharge valve is opened when the temperature of the nitrogen is continuously detected by the nitrogen valve 2.

The temperature change of the lithium battery is monitored through the infrared thermal imager, and the charging and discharging current is timely adjusted when the temperature is too high, so that the charging and discharging safety is ensured.

The opening of intelligent control liquid nitrogen pipeline and electric control valve is put out a fire with liquid nitrogen, guarantees personnel and property safety.

When an accident occurs, the audible and visual alarm flashes a red light and sounds to remind operators of the accident occurrence and carry out effective treatment.

Fig. 3 shows a charge-discharge negative electrode clip, and in practice, the charge-discharge positive electrode clip and the charge-discharge negative electrode clip are identical in shape.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. The utility model provides a safe charge-discharge device of lithium cell, its characterized in that, including box (1) and liquid nitrogen tank (2), external thermal imaging appearance (3) are installed on box (1) inner wall top, have one on liquid nitrogen tank (2) and wear into nitrogen pipe (4) of bottom in box (1), install smoke detector (5) on box (1) inside wall, install an industrial control touch-sensitive screen (6) on box (1), fixed AC/DC bidirectional power supply module (7) that are equipped with on box (1) inner wall, AC/DC bidirectional power supply module (7) are last to have charge-discharge anodal clamp (8) and charge-discharge negative pole clamp (9), fixed be equipped with an arc baffle (10) between box (1) inner wall, the middle part of arc baffle (10) is equipped with integrated into one piece's discharge case (11), discharge case (11) inside have place the discharge valve subassembly of lithium cell (13), just fixed connection on discharge case (11) outer wall discharge valve subassembly (12).

2. The lithium battery safe charging and discharging device according to claim 1, wherein the nitrogen pipeline (4) is provided with an electric control valve (14), the external thermal imager (3) is connected with the industrial control touch screen (6) through an RJ45 Ethernet communication line, an audible and visual alarm (15) is fixed at the external top end of the box body (1), the industrial control touch screen (6) is connected with the AC/DC bidirectional power module (7) through the RJ45 Ethernet communication line, and a pressure gauge (16) is arranged on the liquid nitrogen tank (2).

3. The safe charging and discharging device for the lithium battery according to claim 2, wherein a frame (17) is fixed on the inner wall of the box body (1), and an electric cooling fan (18) is fixedly arranged on the inner wall of the frame (17) through a bracket.

4. A lithium battery safety charge-discharge device according to claim 3, characterized in that a switch door (19) is mounted below the front of the case (1) through a hinge, a door handle (20) is arranged on the switch door (19), and a matched buckle (21) is arranged on the switch door (19) and the case (1).

5. The safe charging and discharging device for the lithium battery according to claim 4, wherein a box door (22) is arranged on the side surface of the box body (1), the industrial control touch screen (6) is arranged on the outer surface of the box door (22), and a box door handle is arranged on the box door (22).

6. The lithium battery safe charging and discharging device according to claim 5, wherein the discharging valve assembly comprises a rotating rod (23) connected with the output end of the discharging valve motor (12), the rotating rod (23) penetrates into the discharging box (11), external threads with opposite threads are engraved on the outer surfaces of two ends of the rotating rod (23), supporting clamps (24) are sleeved on two ends of the rotating rod (23) in a threaded mode, a plurality of supporting blocks (25) are fixedly arranged on the inner side walls of the supporting clamps (24), a traction rod (26) penetrating through the supporting clamps (24) is fixedly arranged between the inner walls of the discharging box (11), and a bearing fixed on the inner walls of the discharging box (11) is sleeved on the other end of the rotating rod (23).

7. The lithium battery safe charging and discharging device according to claim 6, wherein the liquid nitrogen tank (2) is connected to a supporting table (27) with four rollers.