Containerized charging and swapping station

Abstract

The present invention provides a containerized charging and swapping station, which includes a stacker, a battery compartment, and a battery emergency treatment slot. The stacker is used to transfer battery packs; an emergency compartment is provided in the battery compartment, and the stacker transfers the battery pack with a thermal runaway warning to the emergency compartment; the battery emergency treatment slot is used to cool down the battery pack with a thermal runaway warning, and is provided next to the battery compartment and has an opening for connecting to the battery compartment; the battery compartment is provided with an emergency door, and the emergency door corresponds to the opening, and a transmission device is provided at the bottom of the emergency compartment, and the transmission device is used to transfer the battery pack on the emergency compartment through the emergency door and the opening to the battery emergency treatment slot. The containerized charging and swapping station provided by the present invention greatly reduces the time to transfer the battery pack with a thermal runaway warning out of the battery compartment, avoids the impact on other battery packs in the battery compartment, reduces the risk of smoke and ignition of the battery pack, and improves safety performance.

Description

Technical Field

[0001] The present invention belongs to the technical field of charging and swapping stations, and more specifically, relates to a containerized charging and swapping station. Background Art

[0002] A charging and swapping station is an energy station that provides charging and rapid replacement of power batteries for electric vehicles. In order to facilitate layout and shorten the construction period, the charging and swapping station is designed in a containerized style. A containerized charging and swapping station generally consists of three parts: a battery compartment, an electrical compartment, and a parking platform. The battery compartment is used to place battery packs and charge them; the electrical compartment is used to place chargers and power distribution and other communication equipment; the parking platform is used to park electric vehicles and replace empty and full battery packs. The equipment for replacing empty and full battery packs is called a battery swapping trolley, and the equipment for storing and retrieving battery packs in the battery compartment is called a stacker.

[0003] The battery compartment in a charging and swapping station usually contains dozens of lithium battery packs for charging, so the safety of the battery pack is the top priority of the charging and swapping station, especially preventing the battery pack from catching fire in the battery compartment. The battery pack of an electric vehicle is sealed and has a large capacity. After a fire occurs, a gas fire extinguishing device can only extinguish the external open flame, but cannot prevent internal chemical reactions or prevent re-ignition. In addition, the battery packs in the battery compartment are very close, which can easily affect the surrounding battery packs.

[0004] At present, containerized charging and swapping stations are still in a semi-automatic state when dealing with thermal runaway of battery packs. Generally, the battery pack thermal runaway warning is issued, and the stacker in the battery compartment receives the command to take out the battery pack and put it on the battery swapping trolley. The battery swapping trolley transfers the battery pack out of the battery compartment and parks it on the parking platform. Then, the battery pack is manually moved to the fire treatment area by forklift for cooling or fire extinguishing. The whole process will not take less than 5 minutes at the fastest. Summary of the invention

[0005] The object of the present invention is to provide a containerized charging and swapping station to solve the problems existing in the prior art of long time for handling thermal runaway of battery packs, battery pack smoking, and high risk of ignition.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide a container-type charging and swapping station, including a stacker, a battery compartment and a battery emergency treatment slot. The stacker is used to transfer battery packs; an emergency compartment is provided in the battery compartment, and the stacker transfers the battery pack with a thermal runaway warning to the emergency compartment; the battery emergency treatment slot is used to cool down the battery pack with a thermal runaway warning, and is provided next to the battery compartment and has an opening for connecting to the battery compartment; the battery compartment is provided with an emergency door, and the emergency door corresponds to the opening, and a transmission device is provided at the bottom of the emergency compartment, and the transmission device is used to transfer the battery pack on the emergency compartment through the emergency door and the opening to the battery emergency treatment slot.

[0007] Furthermore, the battery emergency treatment tank includes a box body and a spray device connected to the box body, the spray device includes a water inlet pipe and a spray head connected to the water inlet pipe, and the spray head is arranged on the top of the box body.

[0008] Furthermore, the box body is also connected to a drain pipe and an overflow pipe, a liquid level sensor is arranged in the box body, a temperature sensor is arranged in the box body, and a water inlet valve is arranged on the water inlet pipe. The water inlet valve is opened and closed according to the temperature detected by the temperature sensor or the liquid level detected by the liquid level sensor.

[0009] Furthermore, a tray for carrying the battery pack is provided in the box body, and a deformable support is also provided in the box body, and two ends of the deformable support are respectively connected to the tray and the box body, and the deformable support supports the tray so that the tray is tilted. After the battery pack is placed on the tray, the deformable support is pressed down so that the tray lies flat on the bottom of the box body.

[0010] Furthermore, the deformable support member is a gas spring assembly, and a slider is provided at one end of the gas spring assembly connected to the box body. A slide groove for the slider to slide is provided on the box body, and the slide groove is provided along the height direction.

[0011] Furthermore, the box body is provided with rollers and rollers for delivering the battery packs into the tray near the opening, the rollers are arranged on the outside of the opening, the rollers are arranged on the inside of the opening, and the rollers and the rollers are on the same plane as the tray.

[0012] Furthermore, a shock-absorbing pad for contacting the tray is provided at the bottom of the box.

[0013] Furthermore, the transmission device includes a plurality of powered rollers, and a conveyor belt is provided on the powered rollers.

[0014] Furthermore, the box body is rotatably connected to a door panel at the opening, and the door panel is used to close the opening.

[0015] Furthermore, a plurality of shutter holes are provided on the side wall of the box body.

[0016] The beneficial effect of the containerized charging and swapping station provided by the present invention is that compared with the prior art, the present invention sets a battery emergency treatment slot next to the battery compartment. When a thermal runaway warning occurs in the battery pack, the stacker transfers the battery pack to the emergency compartment. The transmission device quickly transfers the battery pack through the emergency port and the opening to the battery emergency treatment slot for storage and cooling. The implementation of the technical solution of the present invention can greatly reduce the time to transfer the battery pack with a thermal runaway warning out of the battery compartment, avoid the impact on other battery packs in the battery compartment, reduce the risk of smoke and ignition of the battery pack, and improve safety performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 A schematic diagram of the structure of a containerized charging and swapping station provided in an embodiment of the present invention, with some structures not shown;

[0019] Figure 2 A schematic cross-sectional view of a battery emergency treatment tank provided in an embodiment of the present invention Figure 1 ;

[0020] Figure 3 for Figure 2 A magnified view of part A;

[0021] Figure 4 A schematic cross-sectional view of a battery emergency treatment tank provided in an embodiment of the present invention Figure 2 ;

[0022] Figure 5 A schematic diagram of the three-dimensional structure of a battery emergency treatment tank provided in an embodiment of the present invention.

[0023] Among them, the main marks of the drawings in the figure are:

[0024] 1. Battery pack; 2. Battery compartment; 3. Emergency compartment;

[0025] 4. Battery emergency treatment tank; 41. Box body; 42. Spraying device; 421. Water inlet pipe; 422. Spraying head;

[0026] 5. Opening; 6. Emergency door;

[0027] 7. Transmission device; 71. Power roller; 72. Conveyor belt;

[0028] 8. Drain pipe; 9. Overflow pipe; 10. Liquid level sensor; 11. Temperature sensor; 12. Water inlet valve; 13. Tray; 14. Gas spring assembly; 15. Slider; 16. Slide; 17. Roller; 18. Roller; 19. Shock pad; 20. Door panel; 21. Shutter hole. DETAILED DESCRIPTION

[0029] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0030] Please also read Figure 1 and Figure 2 , the containerized charging and swapping station provided by the embodiment of the present invention is now described. The containerized charging and swapping station includes a stacker (not shown in the figure), a battery compartment 2, and a battery emergency processing slot 4. The stacker is used to transfer the battery pack 1. An emergency compartment 3 is provided in the battery compartment 2. When the battery pack 1 has a thermal runaway warning, the stacker transfers the battery pack 1 to the emergency compartment 3. The battery emergency processing slot 4 is used to receive the battery pack 1 with a thermal runaway warning on the emergency compartment 3 and cool the battery pack 1. The battery emergency processing slot 4 is arranged next to the battery compartment 2. The battery compartment 2 is provided with an emergency door 6. The battery emergency processing slot 4 is provided with an opening 5. A transmission device 7 is provided at the bottom of the emergency compartment 3. The transmission device 7 transfers the battery pack 1 on the emergency compartment 3 to the battery emergency processing slot 4 through the emergency door 6 and the opening 5. The battery pack 1 with a thermal runaway warning is separated from other normal battery packs 1.

[0031] Compared with the prior art, the containerized charging and swapping station provided by the present invention has a battery emergency treatment slot 4 next to the battery compartment 2. When a thermal runaway warning occurs in the battery pack 1, the stacker transfers the battery pack 1 to the emergency compartment 3. The transmission device 7 quickly transfers the battery pack 1 through the emergency port and the opening 5 to the battery emergency treatment slot 4 for storage and cooling. The time for transferring the battery pack 1 with a thermal runaway warning out of the battery compartment 2 is greatly reduced, the impact on other battery packs 1 in the battery compartment 2 is avoided, the risk of smoke and ignition of the battery pack 1 is reduced, and the safety performance is improved.

[0032] Specifically, see Figure 2 and Figure 4In this embodiment, the battery emergency treatment tank 4 includes a box body 41 and a spray device 42. The spray device 42 is connected to the box body 41. The spray device 42 is used to introduce water flow to cool down the battery pack 1 that has a thermal runaway warning. The spray device 42 includes a water inlet pipe 421 and a spray head 422. The spray head 422 is arranged on the top of the box body 41. In addition, the box body 41 is also connected to a drain pipe 8 and an overflow pipe 9. The drain pipe 8 is used to drain the water in the box body 41. The overflow pipe 9 is used to maintain the liquid level in the box body 41 and quickly remove excess water. A liquid level sensor 10 and a temperature sensor 11 are also arranged in the box body 41. A water inlet valve 12 is arranged on the water inlet pipe 421. The water inlet valve 12 is an electromagnetic valve. If the temperature of the battery pack 1 with thermal runaway warning continues to rise to the set value after entering the box 41, the temperature sensor 11 detects that the temperature has reached the set value and then controls the water inlet valve 12 to open, and the spray head 422 cools the battery pack 1. Then, it is determined whether to close or open the water inlet valve 12 based on the temperature and water level of the battery pack 1.

[0033] In this implementation, see Figures 2 to 4 A tray 13 is also provided in the box 41. The tray 13 is used to receive the battery pack 1 transferred from the battery compartment 2. A deformable support is also provided in the box 41. The deformable support allows the tray 13 to be tilted in the box 41. The deformable support is a gas spring assembly 14. One end of the gas spring assembly 14 is rotatably connected to the tray 13, and the other end is connected to the box 41. The tray 13 is tilted in the box 41 and is rotatably connected to the box 41. This is to keep synchronization with the battery pack 1 entering the box 41. When the battery pack 1 enters from the opening 5, it enters tilted downward, so that the battery pack 1 can be placed on the tray 13 smoothly. This is to prevent the battery pack 1 from completely entering the box 41, with one end contacting the tray 13 and the other end contacting the side wall of the box 41, so that the battery pack 1 cannot be placed flat on the tray 13. In addition, one end of the gas spring assembly 14 is rotatably connected to the bottom of the tray 13, and the other end is provided with a slider 15. A slide groove 16 is provided on the box body 41, and the slider 15 is provided in the slide groove 16. The slide groove 16 is provided along the height direction of the box body 41. After the battery pack 1 contacts the tray 13, the tray 13 is pressed down by the battery pack 1, and the tray 13 then presses the gas spring assembly 14 so that the gas spring assembly 14 is compressed. The slider 15 at the other end of the gas spring assembly 14 first slides upward along the slide groove 16. After the tray 13 is pressed down, the slider 15 slides downward along the slide groove 16, so that the tray 13 is finally placed flat on the bottom of the box body 41. The gas spring assembly 14 prolongs the time for the battery pack 1 to slide into place and reduces the impact of the fall on the box body 41. In addition, a shock-absorbing pad 19 is also provided at the bottom of the box body 41, so that after the tray 13 finally falls to the bottom of the box body 41, the bottom of the tray 13 contacts the shock-absorbing pad 19, further reducing the impact of the tray 13 on the bottom of the box body 41.

[0034] In this implementation, see Figure 2 and Figure 4 , a roller 17 and a roller 18 are arranged near the opening 5 of the box body 41, the roller 17 is arranged on the outside of the opening 5, and the roller 18 is arranged on the inside of the opening 5, and the roller 17, the roller 18 and the tray 13 are on the same plane. This facilitates the battery pack 1 to contact the tray 13 more smoothly. After the battery pack 1 is transferred to the opening 5 by the transmission device 7, the bottom of the battery pack 1 contacts the roller 17 and the roller 18, and the battery pack 1 is sent to the tray 13 by the roller 17 and the roller 18 by the action of gravity. The transmission device 7 includes a plurality of power rollers 71, and a conveyor belt 72 is arranged on the power roller 71. The power roller 71 drives the conveyor belt 72 to move during the rotation process, so that the battery pack 1 is transported to the emergency port and the opening 5. In addition, the transmission device 7 can also be arranged as follows: the first and last two power rollers 71 are active rollers, and the rest are driven rollers. The active roller and the driven roller are double-row sprocket rollers, and a chain is used instead of the conveyor belt 72 to transmit power through the chain.

[0035] Preferably, see Figure 1 and Figure 5 The box body 41 is also provided with a door panel 20, which is rotatably connected to the box body 41. When the battery pack 1 enters, the emergency door 6 pushes the door panel 20 open. When the battery pack 1 is fully entered, the door panel 20 closes the opening 5. When the spray head 422 sprays and cools the battery, it is easy to generate splashes of water, which are easy to fly out of the box body 41. The door panel 20 will block the splashes, greatly reducing the splashes from flying out of the box body 41. In addition, the side wall of the box body 41 is also provided with a shutter hole 21, which can prevent rainwater from entering, and when the battery pack 1 sprays, it can also allow the gas to be discharged from the box body 41 as soon as possible.

[0036] The present invention has the following beneficial effects:

[0037] The emergency response takes a short time, and the battery with thermal runaway risk can be removed from the battery compartment 2 for isolation in more than 20 seconds.

[0038] When a car is replacing battery pack 1, it will not affect the thermal runaway processing of battery pack 1.

[0039] No human presence is required, and the fully automated battery swapping service at the battery swapping station can be better realized, reducing labor costs.

[0040] The most economical and effective way to cool down and extinguish the fire of lithium batteries is to pour a large amount of water continuously. The large specific heat capacity and low boiling point of water can be used to absorb the reaction heat of the battery pack 1, so that the battery pack 1 cannot reach the ignition point.

[0041] The battery pack 1 with the risk of thermal runaway is isolated, and no matter whether the battery pack 1 subsequently sprays gas or ignites, it will not affect the normal operation of other equipment.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Containerized charging and swapping station, It is characterized in that include: A stacker for transferring battery packs; A battery compartment, wherein an emergency compartment is provided in the battery compartment, and the stacker transfers the battery pack with thermal runaway warning to the emergency compartment; A battery emergency treatment tank, used to cool down a battery pack that has a thermal runaway warning, is arranged next to the battery compartment and has an opening for connecting to the battery compartment; The emergency compartment is provided with an emergency door, the emergency door corresponds to the opening, a transmission device is provided at the bottom of the emergency compartment, the transmission device includes a plurality of power rollers, a conveyor belt is provided on the power rollers, and the transmission device is used to transmit the battery pack on the emergency compartment through the emergency door and the opening to the battery emergency treatment tank; The battery emergency treatment tank includes a box body and a spray device connected to the box body, the spray device is used to cool down the battery pack that has a thermal runaway warning, the spray device includes a water inlet pipe and a spray head connected to the water inlet pipe, and the spray head is arranged on the top of the box body; The box is also connected to a drain pipe and an overflow pipe. A liquid level sensor and a temperature sensor are arranged in the box. An automatic control valve is arranged on the water inlet pipe to control opening and closing according to the temperature detected by the temperature sensor or the liquid level detected by the liquid level sensor.

2. The containerized charging and swapping station according to claim 1, Features: A tray for carrying the battery pack is disposed in the box, and a deformable support is also disposed in the box. The deformable support supports the tray so that the tray is tilted. When the battery pack is placed on the tray, the deformable support is pressed down so that the tray lies flat on the bottom of the box.

3. The containerized charging and swapping station as claimed in claim 2, Features: The deformable support member is a gas spring assembly, and both ends of the gas spring assembly are rotatably connected to the tray and the box body respectively. A slider is provided at one end of the gas spring assembly connected to the box body, and a slide groove for the slider to slide is provided on the box body, and the slide groove is opened along the height direction.

4. The containerized charging and swapping station as claimed in claim 2, Features: The box body is provided with rollers and a roller for delivering the battery pack into the tray near the opening, the roller is arranged on the outside of the opening, the roller is arranged on the inside of the opening, and the roller, the roller and the tray are on the same plane.

5. The containerized charging and swapping station as claimed in claim 2, Features: A shock-absorbing pad for contacting the tray is arranged at the bottom of the box.

6. The containerized charging and swapping station according to claim 1, Features: The box body is rotatably connected to a door plate at the opening, and the door plate is used to close the opening.

7. The containerized charging and swapping station according to claim 1, Features: The side wall of the box body is provided with a plurality of shutter holes.

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