A battery protection delayed exhaust valve for new energy vehicles

Abstract

This utility model provides a delayed venting valve for battery protection in new energy vehicles, comprising: a mounting box; the mounting box is bolted to the top of the mounting box, fixing blocks are fixedly installed on both sides of the bottom inside the mounting box, and pressure blocks are fixedly installed on the bottom of both sides inside the fixing box, with a venting membrane restricting the space between the fixing blocks and the pressure blocks; and a mounting tube is fixedly installed in the middle of the bottom of the mounting box. This utility model provides a delayed venting valve for battery protection in new energy vehicles. By setting a magnetic spring and a spike rod inside the venting valve, an electrical signal is transmitted. When the battery malfunctions or is impacted, the current instantly increases by 50A, causing the magnetic spring to instantly push the spike rod upward to pierce the venting membrane, quickly releasing a large amount of gas and preventing battery bulging and explosion. Combined with mechanical protection, it provides dual protection, improves the venting effect of the venting valve, and enhances the practicality and protective properties of the device.

Description

Technical Field

[0001] This utility model relates to the field of exhaust valve technology, and in particular to a battery protection delayed exhaust valve for new energy vehicles. Background Technology

[0002] The battery protection delay vent valve for new energy vehicles is a key component to ensure battery safety. When the internal pressure of the battery rises sharply due to abnormal conditions such as internal short circuit, overheating or physical impact, the vent valve will come into play.

[0003] Its internal structure is ingenious. For example, it adopts a special membrane design, such as a polytetrafluoroethylene (PTFE) microporous membrane, which can effectively block dust and moisture, and also has a rapid air permeability. During normal operation, it maintains stable internal pressure of the battery pack; when the pressure exceeds the limit, the valve opens to slowly and controllably discharge high-pressure gas.

[0004] Existing exhaust valves use mechanical pressure to generate gas when the battery malfunctions or is impacted. This pressure pushes and breaks the diaphragm, releasing the gas and delaying combustion and explosion, thus buying time for escape. However, when a battery is impacted by external force or malfunctions, a large amount of gas is suddenly generated. The mechanical method commonly used in new energy vehicle battery protectors to expel the gas generated by battery malfunctions has poor controllability and slow response efficiency. It cannot quickly expel the large amount of gas generated suddenly, which can easily lead to battery swelling and explosion, resulting in poor safety.

[0005] Therefore, it is necessary to provide a battery protection delay exhaust valve for new energy vehicles to solve the above-mentioned technical problems. Utility Model Content

[0006] This utility model provides a delayed exhaust valve for battery protection in new energy vehicles, which solves the problem that when a battery is subjected to external impact or abnormality, a large amount of gas is suddenly generated. The commonly used mechanical exhaust valve for new energy vehicle battery protectors has poor controllability and slow response efficiency. It cannot quickly exhaust the large amount of gas generated suddenly, which can easily lead to battery swelling and explosion, resulting in poor safety.

[0007] To solve the above-mentioned technical problems, this utility model provides a battery protection delay exhaust valve for new energy vehicles, comprising: a mounting box;

[0008] A fixing box is bolted to the top of the mounting box. Fixing blocks are fixedly installed on both sides of the bottom inside the mounting box, and pressure blocks are fixedly installed on the bottom of both sides inside the fixing box. A breathable membrane is used to restrict the fixing blocks and the pressure blocks.

[0009] The mounting tube is fixedly installed in the middle of the bottom of the mounting box. A connecting block is fixedly installed on one side of the inside of the mounting box. A magnetic spring is provided on one side of the connecting block. A spike is fixedly installed on one side of the top of the magnetic spring.

[0010] An electromagnet is disposed on one side of the bottom inside the mounting box, and the electromagnet is connected to a relay via wires.

[0011] Preferably, a sealing gasket is provided at the connection between the fixing box and the mounting box, and the sealing gasket is made of rubber.

[0012] Preferably, the top of the outer surface of the fixing box is provided with an exhaust hole.

[0013] Preferably, the breathable membrane is a polytetrafluoroethylene microporous membrane.

[0014] Preferably, the top of the electromagnet is the N pole, and the bottom of the magnetic spring is the N pole.

[0015] Preferably, a connecting rod is fixedly installed at the middle of the top bottom of the fixing box, and an mounting plate is fixedly installed at the bottom end of the connecting rod. The bottom of the mounting plate is provided with multiple poking rods.

[0016] Preferably, the puncture rod is conical, and the bottom end of the puncture rod is a sharp end.

[0017] Compared with related technologies, the battery protection delayed exhaust valve for new energy vehicles provided by this utility model has the following beneficial effects:

[0018] This utility model provides a delayed exhaust valve for battery protection in new energy vehicles. By setting a magnetic spring and a spike rod inside the exhaust valve, an electrical signal is transmitted. When the battery malfunctions or is involved in a collision, the current increases by 50A instantaneously, causing the magnetic spring to push the spike rod upward to puncture the vent membrane, quickly expelling a large amount of gas and preventing the battery from bulging and exploding. Combined with mechanical protection, it provides dual protection, improves the exhaust efficiency of the exhaust valve, and enhances the practicality and protection of the device. Attached Figure Description

[0019] Figure 1 A schematic diagram of the structure of a first embodiment of a battery protection delay exhaust valve for new energy vehicles provided by this utility model;

[0020] Figure 2 for Figure 1 The diagram shows a cross-sectional view of the mounting box.

[0021] Figure 3 for Figure 2 The enlarged schematic diagram at point A is shown below;

[0022] Figure 4This is a schematic diagram of the second embodiment of a battery protection delay exhaust valve for new energy vehicles provided by this utility model.

[0023] The following are the labels in the diagram: 1. Mounting box, 2. Fixing box, 3. Vent hole, 4. Mounting tube, 5. Sealing gasket, 6. Breathable membrane, 7. Connecting block, 8. Magnetic spring, 9. Spike rod, 10. Electromagnet, 11. Relay, 12. Pressure block, 13. Fixing block, 14. Connecting rod, 15. Mounting plate, 16. Spike rod. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] First Embodiment

[0026] Please refer to the following: Figure 1 , Figure 2 and Figure 3 ,in, Figure 1 A schematic diagram of the structure of a first embodiment of a battery protection delay exhaust valve for new energy vehicles provided by this utility model; Figure 2 for Figure 1 The diagram shows a cross-sectional view of the mounting box. Figure 3 for Figure 2 The enlarged schematic diagram at point A is shown.

[0027] A battery protection delay vent valve for new energy vehicles includes: a mounting box 1;

[0028] The fixing box 2 is bolted to the top of the mounting box 1. Fixing blocks 13 are fixedly installed on both sides of the bottom inside the mounting box 1. Pressing blocks 12 are fixedly installed on the bottom of both sides inside the fixing box 2. A breathable membrane 6 is restricted between the fixing blocks 13 and the pressing blocks 12.

[0029] The mounting tube 4 is fixedly installed in the middle of the bottom of the mounting box 1. A connecting block 7 is fixedly installed on one side inside the mounting box 1. A magnetic spring 8 is provided on one side of the connecting block 7. A spike 9 is fixedly installed on one side of the top of the magnetic spring 8.

[0030] An electromagnet 10 is disposed on one side of the bottom of the mounting box 1, and the electromagnet 10 is connected to a relay 11 via a wire.

[0031] A sealing gasket 5 is provided at the connection between the fixing box 2 and the mounting box 1. The sealing gasket 5 is made of rubber.

[0032] The top of the outer surface of the fixed box 2 is provided with an exhaust hole 3.

[0033] The breathable membrane 6 is made of polytetrafluoroethylene microporous film.

[0034] The top of the electromagnet 10 is the N pole, and the bottom of the magnetic spring 8 is the N pole.

[0035] The electromagnetic relay 11 can be a Schneider Acti9 series iC65N4PD curve 50A miniature circuit breaker as the overcurrent detection element. The relay 11 is connected to the battery current wire through the wire. Its thermal-magnetic trip unit can quickly respond to a large current of 50A. When the current reaches 50A, the trip unit will operate. Its auxiliary contacts can be used to control the electromagnetic relay, and then control the on and off of the electromagnet 10. The design of the electromagnet 10 needs to be determined according to the load of the magnetic spring 8 and the spike 9 to ensure that it can reliably push the magnetic spring 8 and the spike 9.

[0036] The barb 9 is cone-shaped, with the sharp end facing upwards and close to the breathable membrane 6, making it easy to puncture the breathable membrane 6.

[0037] The height of the exhaust port 3 is higher than that of the breathable membrane 6, maintaining the breathability and dustproof effect of the exhaust valve.

[0038] The middle of the mounting tube 4 is hollow, and the top is connected to the air inlet tube, which extends into the interior of the mounting box 1 to facilitate the introduction of gas into the interior of the mounting box 1.

[0039] The magnetic spring 8 is made of low-carbon steel sheet.

[0040] The working principle of the battery protection delay exhaust valve for new energy vehicles provided by this utility model is as follows:

[0041] When in operation, when the current increases instantaneously to 50A, the electromagnetic relay 11 is activated, its contacts close, and the power circuit of the electromagnet 10 is connected. After the electromagnet 10 is energized, it generates a strong magnetic field, which has the effect of opposite poles repelling the magnetic spring 8, pushing one end of the magnetic spring 8 upward and twisting it, so that the spike 9 punctures the breathable membrane 6 upward and quickly releases the gas.

[0042] Compared with related technologies, the battery protection delayed exhaust valve for new energy vehicles provided by this utility model has the following beneficial effects:

[0043] This utility model provides a delayed exhaust valve for battery protection in new energy vehicles. By setting a magnetic spring 8 and a spike rod 9 inside the exhaust valve, an electrical signal is transmitted. When the battery is abnormal or a collision occurs, the current increases by 50A instantly, causing the magnetic spring 8 to push the spike rod 9 upward to puncture the breathable membrane 6, quickly expelling a large amount of gas and preventing the battery from bulging and exploding. Combined with mechanical protection, it plays a dual protection role, improves the exhaust effect of the exhaust valve, and enhances the practicality and protection of the device.

[0044] Second Embodiment

[0045] Please refer to the following: Figure 4 Based on the battery protection delayed exhaust valve for new energy vehicles provided in the first embodiment of this application, the second embodiment of this application proposes another battery protection delayed exhaust valve for new energy vehicles. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0046] Specifically, the second embodiment of this application provides a battery protection delay exhaust valve for new energy vehicles, which differs in that a connecting rod 14 is fixedly installed in the middle of the top bottom of the fixed box 2, an mounting plate 15 is fixedly installed at the bottom end of the connecting rod 14, and a plurality of poking rods 16 are provided at the bottom of the mounting plate 15.

[0047] The piercing rod 16 is conical, and the bottom end of the piercing rod 16 is a sharp end.

[0048] The working principle of the battery protection delay exhaust valve for new energy vehicles provided by this utility model is as follows:

[0049] During operation, the puncture rod 16 is first placed on top of the breathable membrane 6. As the breathable membrane 6 inflates to the critical height, it touches the puncture rod 16, which punctures the breathable membrane 6, thus realizing mechanical exhaust of the device.

[0050] Compared with related technologies, the battery protection delayed exhaust valve for new energy vehicles provided by this utility model has the following beneficial effects:

[0051] This utility model provides a battery protection delayed exhaust valve for new energy vehicles. By installing a puncture rod 16 in the middle of the bottom of the fixed box 2, the vent membrane 6 will be punctured by the puncture rod 16 when it expands and is not punctured by the puncture rod 9 in time, or when there is a problem with the relay 11. This device has a simple structure and strong practicality. The cooperation between the puncture rod 16 and the puncture rod 9, as the vent membrane 6 expands until it is punctured at the bottom of the puncture rod 16, improves the mechanical protection effect, provides a double protection effect, avoids the problem of not being able to quickly exhaust air when the circuit fails, and improves the protection effect of the device.

[0052] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A new energy vehicle battery protection delayed exhaust valve, characterized in that, include: Mounting box; A fixing box is bolted to the top of the mounting box. Fixing blocks are fixedly installed on both sides of the bottom inside the mounting box, and pressure blocks are fixedly installed on the bottom of both sides inside the fixing box. A breathable membrane is used to restrict the fixing blocks and the pressure blocks. The mounting tube is fixedly installed in the middle of the bottom of the mounting box. A connecting block is fixedly installed on one side of the inside of the mounting box. A magnetic spring is provided on one side of the connecting block. A spike is fixedly installed on one side of the top of the magnetic spring. An electromagnet is disposed on one side of the bottom inside the mounting box, and the electromagnet is connected to a relay via wires.

2. The battery protection delayed exhaust valve for new energy vehicles according to claim 1, characterized in that, A sealing gasket made of rubber is provided at the connection between the fixing box and the mounting box.

3. The battery protection delayed exhaust valve for new energy vehicles according to claim 1, characterized in that, The top of the outer surface of the fixing box is provided with an exhaust hole.

4. The battery protection delayed exhaust valve for new energy vehicles according to claim 1, characterized in that, The breathable membrane is made of polytetrafluoroethylene microporous film.

5. The battery protection delayed exhaust valve for new energy vehicles according to claim 1, characterized in that, The top of the electromagnet is the N pole, and the bottom of the magnetic spring is the N pole.

6. The delayed exhaust valve for protecting a battery of a new energy vehicle according to claim 1, characterized in that, A connecting rod is fixedly installed in the middle of the top bottom of the fixed box, and an installation plate is fixedly installed at the bottom end of the connecting rod. Multiple poking rods are provided at the bottom of the installation plate.

7. The battery protection delayed exhaust valve for new energy vehicles according to claim 6, characterized in that, The stab rod is conical, with a sharp end at the bottom.

Images