A battery pack protection device for new energy vehicles

Abstract

The present invention discloses a battery pack protection device for new energy vehicles, belonging to the technical direction of new energy vehicle batteries. It includes a battery pack protection box, a new energy vehicle battery pack, an air vent pipeline, a lifting and fixing seat, a first temperature sensor, and an air compressor. Inside the battery pack protection box, there are a first telescopic air rod, a second telescopic air rod, a battery pack placement seat, and a second temperature sensor. A number of groups of the first telescopic air rods and the second telescopic air rods are fixedly installed side by side on the lifting and fixing seat. The battery pack placement seat is fixedly installed at the ends of a number of groups of the first telescopic air rods and the second telescopic air rods. A number of groups of the second temperature sensors are arranged in an array on the battery pack placement seat. Through the combined use of two temperature sensors and the device program, high-temperature protection operations can be carried out on the new energy vehicle battery pack, and when a spontaneous combustion phenomenon occurs, this group of new energy vehicle battery packs can be lifted out to the outside to reduce the losses of the factory.

Description

Technical Field

[0001] The present invention belongs to the technical direction of new energy vehicle batteries, and particularly relates to a battery pack protection device for new energy vehicles. Background Technique

[0002] New energy vehicles all have the same characteristic - they all have a battery pack. The internal structures of battery packs are similar, all having batteries, boxes for placing batteries, high-voltage wiring harnesses, low-voltage wiring harnesses, high-voltage power-off systems, battery management systems, thermal management systems, etc. It can be said that in a pure electric vehicle, the battery is its heart. Similarly, in a hybrid vehicle, the battery can also be regarded as another heart. The battery is externally charged through a power plug, supplies power to the motor, drives the vehicle to travel, and at the same time stores the energy recovered during braking.

[0003] After the new energy vehicle battery pack is produced, it is generally placed in a warehouse. Since the thicknesses of new energy vehicle battery packs are different, the space in the warehouse cannot be effectively utilized. During the process of taking and transporting the new energy vehicle battery pack, collisions may occur, which may cause damage to the new energy vehicle battery pack, increasing the production cost of the factory. During storage, high-temperature protection operations cannot be performed on the new energy vehicle battery pack. If the external temperature is too high, spontaneous combustion may occur, posing a certain safety hazard. When spontaneous combustion occurs in a certain new energy vehicle battery pack, other new energy vehicle battery packs cannot be protected. Summary of the Invention

[0004] The purpose of the present invention is to provide a battery pack protection device for new energy vehicles for the existing device to solve the problems raised in the above background technique.

[0005] To solve the above technical problems, the present invention provides the following technical solution: A battery pack protection device for new energy vehicles, including a battery pack protection box and a new energy vehicle battery pack. A telescopic protection component is arranged inside the battery pack protection box. The telescopic protection component includes an air compressor, a first air outlet pipe, a second air outlet pipe, a lifting and fixing seat, a ventilation pipeline, an electric valve, a first telescopic air rod, a second telescopic air rod, a battery pack placement seat, and a second temperature sensor;

[0006] The air compressor is fixedly installed at the other end outside the battery pack protection box. One end of each of the first air outlet pipe and the second air outlet pipe is connected to the air compressor, and the other end of each penetrates through the lifting and fixing seat and is connected to two groups of ventilation pipelines. The first air outlet pipe and the second air outlet pipe are arranged side by side. The lifting and fixing seat is fixedly installed on the inner bottom surface of the battery pack protection box. The two groups of ventilation pipelines are symmetrically arranged inside the lifting and fixing seat. One end of each of the two groups of ventilation pipelines is respectively connected to the first air outlet pipe and the second air outlet pipe, and the other end is branched and connected to several groups of second telescopic air rods. Several groups of electric valves are fixedly installed in each branch of the ventilation pipeline. Several groups of first telescopic air rods and several groups of second telescopic air rods are fixedly installed side by side on the lifting and fixing seat. The battery pack placement seat is fixedly installed at the ends of several groups of first telescopic air rods and several groups of second telescopic air rods. Several groups of second temperature sensors are arranged in an array on the battery pack placement seat. A first temperature sensor is fixedly installed on the outer side box wall of the battery pack protection box.

[0007] The present invention further illustrates that an electric box door is provided at the top of the battery pack protection box.

[0008] The present invention further illustrates that a refrigerator is fixedly installed at one end outside the battery pack protection box. There are two groups of refrigeration air outlet pipes on the refrigerator. One end of each of the two groups of refrigeration air outlet pipes is connected to the refrigerator, and the other end penetrates through the box wall of the battery pack protection box and extends into the interior.

[0009] The present invention further illustrates that two groups of heat dissipation holes are provided on both sides of the battery pack protection box, namely a first heat dissipation hole and a second heat dissipation hole.

[0010] The present invention further illustrates that a battery pack fixing plate is fixedly installed inside the battery pack protection box, and the battery pack fixing plate is a fireproof plate.

[0011] The present invention further illustrates that the battery pack protection box is placed on the production workshop floor.

[0012] The present invention further illustrates that the equipment program includes a drive control module and a temperature detection module. The drive control module and the temperature detection module are connected by signals. The drive control module is signal-connected to the electric box door, the refrigerator, the air compressor, and the electric valve. The temperature detection module includes a workshop temperature detection unit and a box interior temperature detection unit. The workshop temperature detection unit is signal-connected to the first temperature sensor, and the box interior temperature detection unit is signal-connected to the second temperature sensor.

[0013] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: In the present invention, by using different pumping pressures, it can be ensured that new energy vehicle battery packs of different thicknesses can be separated and fixed by the battery pack fixing plate after being placed, preventing the thin new energy vehicle battery pack from dropping too low and colliding with each other in the battery pack protection box, which may cause damage, and also preventing the thick new energy vehicle battery pack from not dropping in place and blocking the closing of the electric box door;

[0014] By the combined use of two groups of temperature sensors, a refrigerator, an electric valve and an equipment program, high-temperature protection operations can be carried out on the new energy vehicle battery pack, preventing the new energy vehicle battery pack from spontaneous combustion due to too high temperature in the production workshop. Also, when the temperature of a certain group of new energy vehicle battery packs shows abnormal phenomena, that group of new energy vehicle battery packs can be lifted out to the outside for the convenience of the staff to check. If spontaneous combustion occurs, it can also prevent other new energy vehicle battery packs from being ignited, reducing the losses of the factory. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0016] Figure 1 is the overall structural schematic diagram of the present invention;

[0017] Figure 2 is the overall structural schematic diagram of another perspective of the present invention;

[0018] Figure 3 is the internal schematic diagram of the battery pack protection box of the present invention;

[0019] Figure 4 is the internal schematic diagram of another perspective of the battery pack protection box of the present invention;

[0020] Figure 5 is the schematic diagram of the telescopic protection component of the present invention;

[0021] Figure 6 is the Figure 5 enlarged schematic diagram of area A in the present invention;

[0022] Figure 7 is the schematic diagram of the normal placement of the new energy vehicle battery pack of the present invention;

[0023] Figure 8 is the schematic diagram of the abnormal temperature situation of the new energy vehicle battery pack of the present invention;

[0024] Figure 9 is the internal pipeline schematic diagram of the lifting and fixing seat of the present invention;

[0025] Figure 10It is a schematic diagram of the system of the present invention.

[0026] In the figure: 1. Battery pack protection box; 11. Electric box door; 12. Refrigerator; 121. Refrigeration outlet pipe; 131. First heat dissipation hole; 132. Second heat dissipation hole; 14. Battery pack fixing plate; 15. First temperature sensor;

[0027] Retractable protection assembly; 21. Air compressor; 211. First outlet pipe; 212. Second outlet pipe; 22. Lifting fixed seat; 221. Ventilation pipeline; 222. Electric valve; 23. First telescopic air rod; 231. Second telescopic air rod; 24. Battery pack placement seat; 25. Second temperature sensor;

[0028] New energy vehicle battery pack. Specific implementation manner

[0029] The technical solution of the present invention will be further described in detail and non-limitingly below in conjunction with the preferred embodiments and their accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative work shall fall within the protection scope of the present invention.

[0030] Please refer to Figures 1-10 , the present invention provides a technical solution: a battery pack protection device for a new energy vehicle, including a battery pack protection box 1 and a new energy vehicle battery pack 3. The battery pack protection box 1 is placed on the ground of the production workshop and is used to place the new energy vehicle battery pack 3. The inside of the battery pack protection box 1 is hollow. An electric box door 11 is provided on the top of the battery pack protection box 1, which is used to cooperate with the equipment program to control the opening and closing of the battery pack protection box 1. A refrigerator 12 is fixedly installed at one end of the outside of the battery pack protection box 1, which is used to cool the placed new energy vehicle battery pack 3. There are two groups of refrigeration outlet pipes 121 on the refrigerator 12. One end of the two groups of refrigeration outlet pipes 121 is connected to the refrigerator 12, and the other end penetrates through the box wall of the battery pack protection box 1 and extends into the interior. Two groups of heat dissipation holes are opened on both sides of the battery pack protection box 1, namely the first heat dissipation hole 131 and the second heat dissipation hole 132. The two groups of heat dissipation holes are used to cooperate with the refrigerator 12 to conduct cold air circulation operation inside the battery pack protection box 1 to prevent the temperature in the workshop from being too high and affecting the new energy vehicle battery pack 3. A battery pack fixing plate 14 is fixedly installed inside the battery pack protection box 1, which is used to fix the new energy vehicle battery pack 3 and can also prevent the new energy vehicle battery packs 3 from colliding with each other and causing damage during transportation. The battery pack fixing plate 14 is a fireproof board, which can reduce losses when the new energy vehicle battery pack 3 catches fire. A first temperature sensor 15 is fixedly installed on the box wall on one side of the outside of the battery pack protection box 1, which is used to cooperate with the equipment program to detect the temperature in the production workshop;

[0031] Inside the battery pack protection box 1, a telescopic protection component 2 is provided. The telescopic protection component 2 includes an air compressor 21, a first air outlet pipe 211, a second air outlet pipe 212, a lifting and fixing seat 22, a ventilation pipeline 221, an electric valve 222, a first telescopic air rod 23, a second telescopic air rod 231, a battery pack placement seat 24, and a second temperature sensor 25;

[0032] The air compressor 21 is fixedly installed at the other end outside the battery pack protection box 1 and is used to provide compressed air for telescopic operation. One ends of the first air outlet pipe 211 and the second air outlet pipe 212 are both connected to the air compressor 21, and the other ends both penetrate through the lifting and fixing seat 22 and are connected to two groups of ventilation pipelines 221. The first air outlet pipe 211 and the second air outlet pipe 212 are arranged side by side. The lifting and fixing seat 22 is fixedly installed on the inner bottom surface of the battery pack protection box 1 and is used to install several groups of telescopic air rods. Two groups of ventilation pipelines 221 are symmetrically arranged inside the lifting and fixing seat 22. One ends of the two groups of ventilation pipelines 221 are respectively connected to the first air outlet pipe 211 and the second air outlet pipe 212, and the other ends are branched and connected to several groups of second telescopic air rods 231. Several groups of electric valves 222 are fixedly installed in each branch of the ventilation pipeline 221. Several groups of first telescopic air rods 23 and several groups of second telescopic air rods 231 are fixedly installed side by side on the lifting and fixing seat 22. The battery pack placement seat 24 is fixedly installed at the ends of several groups of first telescopic air rods 23 and several groups of second telescopic air rods 231. Several groups of second temperature sensors 25 are arranged in an array on the battery pack placement seat 24 and are used to cooperate with the equipment program to detect the temperature of the new energy vehicle battery pack 3 and prevent the new energy vehicle battery pack 3 from catching fire due to excessive external temperature;

[0033] The battery pack protection box 1 is powered by an external power supply to drive the internal device;

[0034] The battery pack protection box 1 is equipped with an equipment program, and the equipment program can control the opening and closing of the electric box door 11, the opening and closing of the refrigerator 12, the start and stop of the air compressor 21, and the opening and closing of the electric valve 222;

[0035] The electric box door 11, the refrigerator 12, the air compressor 21, the electric valve 222, and the two groups of temperature sensors are all signal-connected to the equipment program;

[0036] The device program includes a drive control module and a temperature detection module. The drive control module and the temperature detection module are signal-connected. The drive control module is signal-connected to the electric box door 11, the refrigerator 12, the air compressor 21, and the electric valve 222. The temperature detection module includes a workshop temperature detection unit and an internal box temperature detection unit. The workshop temperature detection unit is signal-connected to the first temperature sensor 15, and the internal box temperature detection unit is signal-connected to the second temperature sensor 25;

[0037] When the device program is started, the drive control module starts the electric box door 11, the refrigerator 12, the air compressor 21, and the electric valve 222. The electric box door 11 opens. The device program controls the air compressor 21 to pump compressed air into the first telescopic air rod 23 and the second telescopic air rod 231. The first telescopic air rod 23 and the second telescopic air rod 231 drive the battery pack placement seat 24 to rise. At this time, the staff sequentially place the new energy vehicle battery packs 3 on several groups of battery pack placement seats 24, and then control the device program to reduce the pumping pressure according to the set value. At this time, the first telescopic air rod 23 and the second telescopic air rod 231 drive the battery pack placement seat 24 to descend into the interior of the battery pack protection box 1. The battery pack fixing plate 14 plays a role in protecting the new energy vehicle battery pack 3 from collision. Then the device program controls the electric box door 11 to close;

[0038] At this time, the device program detects the temperature inside the battery pack protection box 1 and in the production workshop through the temperature detection module. The internal box temperature detection unit detects the temperature of the new energy vehicle battery pack 3 through the second temperature sensor 25 and compares it with the set value. If the value exceeds the set value, the device program determines that the temperature of the new energy vehicle battery pack 3 is abnormal and performs a secondary detection through the first temperature sensor 15 to detect whether the temperature of the new energy vehicle battery pack 3 itself is abnormal or the temperature in the production workshop is too high. If the value detected by the first temperature sensor 15 exceeds the set value, the device program starts the refrigerator 12 through the drive control module to cool down, preventing the new energy vehicle battery pack 3 from spontaneous combustion due to excessive temperature and playing a role in high-temperature protection. If the value detected by the first temperature sensor 15 does not exceed the set value, the device program determines that the temperature of a certain group of new energy vehicle battery packs 3 is abnormal. The device program controls the electric valve 222 corresponding to this group of new energy vehicle battery packs 3 to open through the drive control module, and the electric valves 222 of the other groups are closed. The electric box door 11 opens, and this group of new energy vehicle battery packs 3 with abnormal temperature extends upward, and the staff needs to detect it;

[0039] Three different pump air pressure values are entered into the device program to correspond to new energy vehicle battery packs 3 of different thicknesses, which can be modified according to the specific needs of the staff. The extended lengths of the two telescopic air rods will be automatically adjusted. Three different temperature values are entered into the device program to correspond to new energy vehicle battery packs 3 in different temperature conditions, and high-temperature protection operations are performed on them;

[0040] It includes the following steps:

[0041] S1. Open the electric box door 11 and place the new energy vehicle battery pack 3;

[0042] S2. The device program automatically adjusts the extended lengths of the two telescopic air rods according to different pump air pressure values to place new energy vehicle battery packs 3 of different thicknesses;

[0043] S4. Close the electric box door 11;

[0044] S5. The device program detects the temperatures of the new energy vehicle battery pack 3 and the production workshop according to the first temperature sensor 15 and the second temperature sensor 25, and automatically controls the start of the refrigerator 12 according to different temperature values;

[0045] Specifically, the automatic adjustment method of S2 is as follows:

[0046] The device program sets the pump air pressure of the air compressor 21 to 1 MPa, 2 MPa, and 3 MPa. The thicknesses of the new energy vehicle battery packs 3 are divided into thin, medium, and thick. When the staff sets the thickness of the new energy vehicle battery pack 3 to be thin, the pump air pressure of the air compressor 21 is automatically adjusted to 3 MPa. When the staff sets the thickness of the new energy vehicle battery pack 3 to be medium, the pump air pressure of the air compressor 21 is automatically adjusted to 2 MPa. When the staff sets the thickness of the new energy vehicle battery pack 3 to be thick, the pump air pressure of the air compressor 21 is automatically adjusted to 1 MPa. By using different pump air pressures, it can be ensured that new energy vehicle battery packs 3 of different thicknesses can be separated and fixed by the battery pack fixing plate 14 after being placed, preventing the thin new energy vehicle battery pack 3 from dropping too low and colliding with each other in the battery pack protection box 1 and causing damage, and also preventing the thick new energy vehicle battery pack 3 from not descending in place and blocking the closing of the electric box door 11.

[0047] Specifically, the automatic adjustment method of S5 is as follows:

[0048] The device program sets the values of two groups of temperature sensors to 20°C, 25°C, and 35°C. The refrigeration temperature of the refrigerator 12 is 20°C and 16°C. When the device program detects that the values of the two groups of temperature sensors are 20°C, the device program determines that the temperature of the battery pack protection box 1 is the normal room temperature, and there is no need to use the refrigerator 12 for overheat protection operation. When the device program detects that the temperature of the second temperature sensor 25 is 25°C, the device program determines that the temperature is abnormal and detects the temperature of the first temperature sensor 15. If the temperature of the first temperature sensor 15 is between 20°C and 25°C, the device program determines that the internal temperature of the battery pack protection box 1 is abnormal. The device program controls the refrigeration temperature of the refrigerator 12 to 20°C to cool down the new energy vehicle battery pack 3 to prevent abnormal temperature rise. If the temperature of the first temperature sensor 15 exceeds 25°C, the device program determines that the temperature in the production workshop is too high. The device program controls the refrigeration temperature of the refrigerator 12 to 16°C to cool down the new energy vehicle battery pack 3 to prevent spontaneous combustion of the new energy vehicle battery pack 3 due to excessive external temperature;

[0049] When the device program detects that the temperature of a certain group of second temperature sensors 25 is 45°C, the device program sends a high-temperature alarm signal to the staff. The device program determines that the temperature of the new energy vehicle battery pack 3 above the second temperature sensor 25 of this group is abnormal and may cause spontaneous combustion. The device program controls the electric valve 222 corresponding to this group of new energy vehicle battery packs 3 to open, and the other electric valves 222 to close. The air compressor 21 is turned on, the electric box door 11 is opened, and the two telescopic air rods lift the new energy vehicle battery pack 3 with abnormal temperature for easy viewing by the staff. If spontaneous combustion occurs, it can prevent the ignition of the other new energy vehicle battery packs 3, effectively reducing the losses of the factory;

[0050] Through the coordinated use of two groups of temperature sensors, the refrigerator 12, the electric valve 222, and the device program, high-temperature protection operations can be performed on the new energy vehicle battery pack 3 to prevent spontaneous combustion of the new energy vehicle battery pack 3 due to excessive temperature in the production workshop. When the temperature of a certain group of new energy vehicle battery packs 3 is abnormal, the battery pack 3 of this group can be lifted out to the outside for easy inspection by the staff. If spontaneous combustion occurs, it can also prevent the ignition of other new energy vehicle battery packs 3, reducing the losses of the factory.

[0051] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting it. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A battery pack protection device for a new energy vehicle, comprising a battery pack protection box (1) and a new energy vehicle battery pack (3), characterized in that, Inside the battery pack protection box (1), a telescopic protection component (2) is provided. The telescopic protection component (2) includes an air compressor (21), a first air outlet pipe (211), a second air outlet pipe (212), a lifting and fixing seat (22), a ventilation pipeline (221), an electric valve (222), a first telescopic air rod (23), a second telescopic air rod (231), a battery pack placement seat (24), and a second temperature sensor (25); The air compressor (21) is fixedly installed at the other end outside the battery pack protection box (1). One end of each of the first air outlet pipe (211) and the second air outlet pipe (212) is connected to the air compressor (21), and the other end of each penetrates through the lifting and fixing seat (22) and is connected to two groups of ventilation pipelines (221). The first air outlet pipe (211) and the second air outlet pipe (212) are arranged side by side. The lifting and fixing seat (22) is fixedly installed on the inner bottom surface of the battery pack protection box (1). Two groups of the ventilation pipelines (221) are symmetrically arranged inside the lifting and fixing seat (22). One end of each of the two groups of ventilation pipelines (221) is respectively connected to the first air outlet pipe (211) and the second air outlet pipe (212), and the other end is branched and connected to several groups of second telescopic air rods (231). Several groups of the electric valves (222) are fixedly installed in each branch of the ventilation pipeline (221). Several groups of the first telescopic air rods (23) and several groups of the second telescopic air rods (231) are fixedly installed side by side on the lifting and fixing seat (22). The battery pack placement seat (24) is fixedly installed at the ends of several groups of the first telescopic air rods (23) and several groups of the second telescopic air rods (231). Several groups of the second temperature sensors (25) are arranged in an array on the battery pack placement seat (24); A first temperature sensor (15) is fixedly installed on the outer side box wall of the battery pack protection box (1).

2. The battery pack protection device for a new energy vehicle according to claim 1, characterized in that, An electric box door (11) is provided at the top of the battery pack protection box (1).

3. The battery pack protection device for a new energy vehicle according to claim 2, characterized in that, A refrigerator (12) is fixedly installed at one end outside the battery pack protection box (1). Two groups of refrigeration air outlet pipes (121) are provided on the refrigerator (12). One end of each of the two groups of refrigeration air outlet pipes (121) is connected to the refrigerator (12), and the other end penetrates through the box wall of the battery pack protection box (1) and extends into the interior.

4. The battery pack protection device for a new energy vehicle according to claim 3, characterized in that, Two heat dissipation holes are provided on both sides of the battery pack protection box (1), namely a first heat dissipation hole (131) and a second heat dissipation hole (132).

5. The battery pack protection device for a new energy vehicle according to claim 4, wherein, A battery pack fixing plate (14) is fixedly installed inside the battery pack protection box (1). The battery pack fixing plate (14) is a fireproof board.

6. The battery pack protection device for a new energy vehicle according to claim 5, wherein, The battery pack protection box (1) is placed on the production workshop floor.

7. The battery pack protection device for a new energy vehicle according to claim 6, characterized in that, It further includes a drive control module and a temperature detection module. The drive control module and the temperature detection module are connected by signals. The drive control module is signal-connected to the electric box door (11), the refrigerator (12), the air compressor (21), and the electric valve (222). The temperature detection module includes a workshop temperature detection unit and an internal box temperature detection unit. The workshop temperature detection unit is signal-connected to the first temperature sensor (15), and the internal box temperature detection unit is signal-connected to the second temperature sensor (25).

8. The method for using a battery pack protection device for a new energy vehicle according to claim 7, wherein it includes the following steps: S1. Open the electric box door (11) and place the new energy vehicle battery pack (3); S2. The equipment program automatically adjusts the extended lengths of the two sets of telescopic air rods according to different pump air pressure values to place new energy vehicle battery packs (3) with different thicknesses; S4. Close the electric box door (11); S5. The equipment program detects the temperatures of the new energy vehicle battery pack (3) and the production workshop according to the first temperature sensor (15) and the second temperature sensor (25), and automatically controls the start of the refrigerator (12) according to different temperature values.

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