New energy automobile battery protection bin

Abstract

The invention relates to the technical field of battery protection, in particular to a new energy automobile battery protection bin which comprises an upper cover, a lower cover, a battery pack, a collision detection assembly, a trigger assembly and a gas cylinder, when an automobile electronic control BMS system fails after an automobile collides, a collision detection device will provide a collision signal, the trigger assembly is driven, a trigger gas channel is opened, and the battery pack is protected; the high-pressure cooling gas in the gas cylinder is discharged into the battery compartment, so that the high-pressure cooling gas in the gas cylinder cools the battery pack in the battery compartment after the vehicle is impacted, and the problems that after the vehicle is impacted, a battery compartment cooling system fails, the battery is prone to spontaneous combustion and spontaneous explosion, and secondary injury is caused to personnel are avoided; the temperature of the battery in the battery compartment is maintained in a safe range, and the stability of the battery and the safety of passengers are ensured.

Description

Technical Field

[0001] This invention relates to the field of battery protection technology, specifically a battery protection compartment for new energy vehicles. Background Technology

[0002] In the development of new energy vehicles, many battery fires and explosions have occurred. Both battery explosions and fires are caused by overheating of the battery cells. There are many causes of battery cell overheating, such as overcharging, over-discharging, internal short circuits or faults, external physical damage, high temperature environment, fast charging or high discharge rate, and excessive charge and discharge cycles.

[0003] To address the aforementioned issues, existing technologies utilize a Battery Management System (BMS) within the battery protection compartment to monitor battery voltage and temperature in real time. If any abnormality occurs, the BMS initiates power-off protection, releases the battery voltage, and activates the cooling system to cool the battery and prevent thermal runaway. This cooling system comprises a pump, pipes, coolant, and a radiator. The pipes are installed within the battery protection compartment, and the coolant transfers heat from the battery to the radiator, which then dissipates the heat to the external environment. While this solution can reliably control and protect the battery temperature under normal conditions, external impacts during vehicle accidents can easily cause the pump, pipes, and radiator to fail. This includes pump shutdown, radiator damage, and pipe deformation or leakage. In such cases, the cooling system will be unable to cool the battery, failing to maintain a safe battery temperature within the battery compartment after an accident, potentially leading to secondary accidents.

[0004] To address this, a battery protection compartment for new energy vehicles is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a battery protection compartment for new energy vehicles, in order to solve the problem that when the cooling system of the battery compartment of a new energy vehicle fails, the battery temperature inside the battery compartment cannot be maintained within a safe range, which can lead to spontaneous combustion or explosion of the battery and cause secondary accidents, resulting in injury to passengers.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A battery protection compartment for a new energy vehicle includes an upper cover, a lower cover, and a battery pack. The upper and lower covers cooperate to form the battery compartment, which houses a central control compartment and the battery pack. The central control compartment is located at the front end of the battery compartment and contains a collision detection component, a triggering component, and a gas cylinder. The collision detection component and the triggering component are connected by air pipes, and the triggering component and the gas cylinder are connected by air pipes. The upper surface of the upper cover also has a cooling air channel, which is connected to the triggering component by air pipes. Multiple air inlets are also provided between the cooling air channel and the battery compartment. Specifically, the collision detection component contains a pendulum, and the triggering component contains a slider. When a collision occurs and the impact force on the collision detection component reaches a set value, the pendulum swings under the impact force, driving the slider to move to the left. The slider releases the high-pressure cooling gas from the cylinder into the battery compartment. The lower cover has multiple exhaust ports, each a through-hole, with both ends connected to the inner and outer surfaces of the battery compartment. The high-pressure cooling gas enters the battery compartment through the inlet and comes into contact with the battery pack. It is worth noting that the high-pressure cooling gas includes at least one of nitrogen, carbon dioxide, argon, or helium. This high-pressure cooling gas possesses cooling, insulating, and flame-retardant properties, ensuring that after a vehicle impact, the high-pressure cooling gas in the cylinder cools the battery pack in the battery compartment. This prevents the battery compartment cooling system from failing after an impact, which could lead to spontaneous combustion or explosion of the battery and cause secondary injuries. It also ensures that the battery temperature in the battery compartment remains within a safe range, guaranteeing battery stability and the safety of passengers.

[0008] Optionally, the collision detection component can be an acceleration sensor, a collision sensor, or radar technology. All three of these collision detection components can detect collisions in a vehicle. However, all of these solutions require that the vehicle's internal electrical power is not lost in order to work properly. After a vehicle is subjected to an external impact, it cannot be guaranteed that the vehicle's power supply will be in a normal state. Therefore, it cannot be guaranteed that the above three solutions will work properly after the vehicle is subjected to an external impact. Thus, none of the above three collision detection components are preferred solutions of this invention.

[0009] Preferably, the collision detection assembly includes a detection chamber, a pendulum, a first connecting rod, a second connecting rod, a piston rod, and a support frame. The detection chamber is fixedly installed on the bottom surface inside the central control chamber. The pendulum is installed inside the detection chamber. The first connecting rod is fixedly installed on the upper end of the pendulum, and the middle part of the first connecting rod is hinged to the upper surface of the detection chamber. The upper end of the first connecting rod is hinged to the lower end of the second connecting rod. The upper end of the second connecting rod is hinged to the lower end of the piston rod. A support frame is also fixedly installed on the upper surface of the detection chamber. A piston chamber is provided at the upper end of the support frame, and the piston rod is slidably connected inside the piston chamber.

[0010] Optionally, the triggering component can be a vehicle stability control system, a brake control unit, or an airbag control module. All three triggering components can trigger safety devices or take specific measures when a car is involved in a collision or dangerous situation. However, all of the above solutions require that the car's internal electrical power is not lost in order to work normally. After the vehicle is hit by an external impact, it cannot be guaranteed that the vehicle's power supply is in a normal state. Therefore, it cannot be guaranteed that the above three solutions can work normally after the vehicle is hit by an external impact. Therefore, none of the above three triggering components are preferred solutions of the present invention.

[0011] Preferably, the triggering component includes a triggering disk and a first slider. The triggering disk is fixedly installed on the rear end face inside the central control compartment. The triggering disk has a first sliding groove located on the central bisecting plane of the triggering disk. The triggering disk also has a triggering air passage located on the right side of the first sliding groove and perpendicularly intersecting the first sliding groove. The first slider is slidably connected inside the first sliding groove.

[0012] It is easy to understand that in the above preferred embodiment, when a car collides, the pendulum ball will swing in the direction of the collision due to inertial force. When the collision force reaches a set value, the first connecting rod will rotate around the central hinge, thereby driving the second connecting rod to swing. During the swing, the second connecting rod will drive the piston rod to move downward. When the piston rod moves downward, a negative pressure will be generated in the piston chamber. This negative pressure will be connected to the first slide groove through the air pipe and drive the first slider to move to the left, opening the trigger air passage and venting the high-pressure cooling gas in the gas cylinder into the battery compartment. This ensures that after the vehicle is impacted, the high-pressure cooling gas in the gas cylinder cools the battery pack in the battery compartment, preventing the battery compartment cooling system from failing after the vehicle is impacted, which could easily cause the battery to spontaneously combust or explode, causing secondary injuries to personnel. This ensures that the battery temperature in the battery compartment is maintained within a safe range, guaranteeing the stability of the battery and the safety of the passengers.

[0013] Preferably, the trigger plate is further provided with a second slide groove, which is perpendicular to the first slide groove. The lower side of the second slide groove is connected to the outside of the trigger plate. A second slider is slidably connected in the second slide groove. A third slide groove is also provided on the first slider. The width of the third slide groove is the same as the width of the second slider, and the second slider is slidably connected in the third slide groove. A slot is provided on the second slider. The horizontal projection surface of the slot is a right trapezoid. The right angle side of the slot is located below the hypotenuse of the slot. The first slider is located above the right angle side of the slot. An electromagnetic coil is also provided on the lower side of the second slide groove. The electromagnetic coil is fixedly installed on the trigger plate, and the inner circle of the electromagnetic coil is the same as the width of the second slide groove. The second slider is slidably connected in the electromagnetic coil.

[0014] It is easy to understand that in the above preferred scheme, slider number two is controlled by an electromagnetic coil. When the vehicle's BMS system fails, the electromagnetic coil loses power. At this time, slider number two will move downwards under the influence of gravity, and the right-angled trapezoid on slider number two will push slider number one to the left, causing the trigger to switch to the open state and maintain this state. If the vehicle's BMS system fails after a collision, the BMS system will control the electromagnetic coil to lose power, ensuring that after a collision, the high-pressure cooling gas in the gas cylinder cools the battery pack in the battery compartment. This prevents the battery compartment cooling system from failing after a collision, which could lead to spontaneous combustion or explosion of the battery and cause secondary injuries to personnel. It also ensures that the battery temperature in the battery compartment is maintained within a safe range, guaranteeing the stability of the battery and the safety of the passengers.

[0015] It is worth noting that when the BMS system malfunctions during vehicle charging, it will also de-energize the electromagnetic coil, causing the trigger to switch to the open state and remain open. This ensures that, in the absence of a collision, the high-pressure cooling gas in the gas cylinder can still cool the battery pack in the battery compartment. This prevents the battery compartment cooling system from failing due to a BMS system malfunction during charging, which could lead to spontaneous combustion or explosion of the battery and cause secondary injuries to occupants. It ensures that the battery temperature in the battery compartment is maintained within a safe range, guaranteeing battery stability and the safety of passengers.

[0016] Preferably, the inner surface of the battery compartment is provided with multiple cooling channels, which are vertically and evenly distributed in a mesh pattern around the multiple battery packs. The vertically arranged cooling channels can effectively improve the horizontal compressive stress. The cooling channels are in close contact with the battery packs on the side near the center of the battery compartment. The multiple cooling channels are connected on the side near the top of the battery compartment, and the connection point is also connected to the air inlet. The cooling channels are connected to the exhaust port on the side near the bottom cover. When high-pressure cooling gas enters the battery compartment, it will circulate to the perimeter of the battery packs through the cooling channels and absorb the heat from the battery packs, ensuring that the battery temperature inside the battery compartment is maintained within a safe range, thus ensuring the stability of the battery and the safety of the passengers.

[0017] Preferably, the battery compartment can also be designed as a skateboard type. The skateboard type battery protection compartment is suitable for new energy vehicles with height restrictions. The inner surface of the battery compartment is provided with multiple cooling channels, and the cooling channels are evenly distributed in a mesh pattern around the multiple battery packs. The horizontally arranged cooling channels can effectively improve the compressive stress in the vertical direction. The cooling channel is close to the battery pack on the side near the center of the battery compartment. The multiple cooling channels are connected on the side near the front of the battery compartment, and the connection is also connected to the cooling air channel. The cooling channel is connected to the exhaust port on the side near the lower cover. When the high-pressure cooling gas enters the battery compartment, it will circulate to the perimeter of the battery pack through the cooling channels and absorb the heat on the battery pack, ensuring that the battery temperature in the battery compartment is maintained within a safe range, ensuring the stability of the battery and the safety of the passengers.

[0018] Preferably, each of the multiple exhaust ports is equipped with a one-way valve, which includes a valve core and a return spring. Both ends of the multiple one-way valves are connected to the inside and outside of the battery compartment. The valve core is slidably connected inside the exhaust port, and a return spring is sleeved on the valve core. The two ends of the return spring are fixedly connected to the exhaust port and the valve core, respectively. When high-pressure refrigerant gas enters the battery compartment, the air inside the battery compartment will flow through the exhaust port to the valve core of the one-way valve, pushing the valve core and the return spring downward, so that the air inside the battery compartment is discharged to the outside of the battery compartment. This effectively cuts off the internal and external environments of the battery compartment, ensuring that the battery temperature inside the battery compartment is maintained within a safe range, ensuring the stability of the battery and the safety of the passengers.

[0019] Preferably, a square groove is formed in each of the plurality of exhaust ports, the square groove intersecting the exhaust port perpendicularly, and a locking slider is slidably connected in each of the plurality of square grooves. The upper end of the locking slider is slidably connected to the right-angle surface of the valve core. An exhaust hole is provided in the vertical direction of each of the plurality of locking sliders. A locking spring is fixedly installed in each square groove, one end of the locking spring is fixedly installed on the left end face of the square groove, and the other end is fixedly installed on the left end face of the locking slider. A locking air passage is formed on the right side of the square groove, and the locking air passage is connected to the gas cylinder through an air pipe.

[0020] It's easy to understand that when the high-pressure refrigerant gas in the cylinder is vented, the pressure inside the cylinder will drop. At this time, the pressure in the locking air passage will also drop. The locking spring, having lost the support on the right side, will pop out to the right and push the locking slider to the right. The locking slider will stop when it reaches the right-angled edge of the valve core and lock the valve core. At this point, the valve core will be unable to move up or down, ensuring that the temperature inside the battery compartment is not affected by external factors, maintaining the battery temperature within a safe range, and ensuring the stability of the battery and the safety of the passengers.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] 1. This invention, by installing a collision detection component, a triggering component, and a gas cylinder within the battery compartment, ensures that when the vehicle's electronic control system (BMS) fails after a collision, the collision detection device provides a collision signal, drives the triggering component, and opens the triggering gas passage to discharge high-pressure cooling gas from the gas cylinder into the battery compartment. This ensures that after a vehicle impact, the high-pressure cooling gas in the gas cylinder cools the battery pack within the battery compartment, preventing the battery compartment cooling system from failing after a collision, which could lead to spontaneous combustion or explosion of the battery and cause secondary injuries to occupants. It also ensures that the battery temperature within the battery compartment remains within a safe range, guaranteeing battery stability and the safety of passengers.

[0023] 2. This invention incorporates a second slider and an electromagnetic coil within the trigger assembly. When the vehicle's electronic control BMS system fails during charging, the electromagnetic coil will also fail, causing the second slider to move downwards under gravity. As the second slider moves downwards, its trapezoidal slope pushes the first slider to the left, opening the trigger gas passage and maintaining this state. This allows high-pressure cooling gas to enter the battery compartment, ensuring rapid cooling in the event of thermal runaway during charging. This prevents the battery compartment cooling system from failing after a vehicle impact, which could lead to spontaneous combustion or explosion of the battery and cause secondary injuries to occupants. The invention also ensures that the battery temperature within the battery compartment remains within a safe range, guaranteeing battery stability and the safety of passengers.

[0024] 3. This invention, by setting a one-way valve and a locking slider on the lower cover, ensures that when the battery compartment is cooled in an emergency, high-pressure cooling gas fills the entire battery compartment, and excess air is discharged outside the battery compartment through the one-way valve. When the pressure inside the gas cylinder decreases, the locking slider moves to the right and locks the one-way valve, ensuring that the temperature inside the battery compartment is not affected by external factors. In addition, the high-pressure cooling gas can also prevent the battery pack from burning, thus preventing the battery compartment cooling system from failing after a vehicle impact, which could easily lead to spontaneous combustion or explosion of the battery and cause secondary injuries to personnel. This ensures that the battery temperature inside the battery compartment is maintained within a safe range, guaranteeing the stability of the battery and the safety of the passengers. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the T-shaped battery protection compartment for new energy vehicles according to the present invention;

[0026] Figure 2 for Figure 1 Sectional view of AA;

[0027] Figure 3 for Figure 2 Enlarged view of a section at point E in the middle;

[0028] Figure 4 for Figure 1BB section view;

[0029] Figure 5 for Figure 4 Enlarged view of a section at point F in the middle;

[0030] Figure 6 for Figure 4 CC section view;

[0031] Figure 7 This is a schematic diagram of the structure of the skateboard-type battery protection compartment of the present invention;

[0032] Figure 8 for Figure 7 DD section view;

[0033] Figure 9 for Figure 7 EE section view;

[0034] In the diagram: 101, lower cover; 102, upper cover; 103, battery pack; 104, central control compartment; 201, detection compartment; 202, pendulum ball; 203, first connecting rod; 204, second connecting rod; 205, piston rod; 206, support frame; 207, piston chamber; 301, trigger plate; 302, first slide groove; 303, second slide groove; 304, first slider; 305, second slider; 306, trigger air passage; 307, electromagnetic coil; 4, gas cylinder; 5, cooling air passage; 6, cooling channel; 701, valve core; 702, locking slider; 703, return spring; 704, locking spring; 705, exhaust port; 706, exhaust outlet; 707, locking air passage; 8, air inlet. Detailed Implementation

[0035] Please see Figures 1 to 9 This invention provides a battery protection compartment for new energy vehicles, the technical solution of which is as follows:

[0036] As one embodiment of the present invention, please refer to [the relevant documentation]. Figure 1A new energy vehicle battery protection compartment includes an upper cover 102, a lower cover 101, and a battery pack 103. The upper cover 102 and the lower cover 101 cooperate to form the battery compartment. A central control compartment 104 is located at the front end of the battery compartment. The central control compartment 104 contains a collision detection component, a triggering component, and a gas cylinder 4. The collision detection component and the triggering component are connected by a gas pipe, and the triggering component and the gas cylinder 4 are connected by a gas pipe. The upper surface of the upper cover 102 also has a cooling air passage 5, which is connected to the triggering component by a gas pipe. Multiple air inlets 8 are also provided between the cooling air passage 5 and the battery compartment. The lower cover 101 has multiple exhaust ports 706, all of which are through holes. The two ends of each exhaust port 706 are connected to the inner and outer surfaces of the battery compartment, respectively. Each exhaust port 705 contains a one-way valve. The system includes a valve core 701 and a return spring 703. Both ends of multiple one-way valves are connected to the inside and outside of the battery compartment. The valve core 701 is slidably connected inside the exhaust port 706. The return spring 703 is sleeved on the valve core 701. Both ends of the return spring 703 are fixedly connected to the exhaust port 706 and the valve core 701, respectively. Square grooves are also provided inside the multiple exhaust ports 706. The square grooves are perpendicular to the exhaust ports 706. Locking sliders 702 are slidably connected inside the multiple square grooves. The upper end of the locking slider 702 is slidably connected to the right-angle surface of the valve core 701. Exhaust holes 705 are provided in the vertical direction of the multiple locking sliders 702. Locking springs 704 are fixedly installed inside the square grooves. One end of the locking spring 704 is fixedly installed on the left end face of the square groove, and the other end is fixedly installed on the left end face of the locking slider 702. A locking air passage 707 is provided on the right side of the square groove. The locking air passage 707 is connected to the gas cylinder 4 through an air pipe.

[0037] For further details, please refer to... Figure 2 and Figure 3The collision detection assembly includes a detection chamber 201, a pendulum 202, a first connecting rod 203, a second connecting rod 204, a piston rod 205, and a support frame 206. The detection chamber 201 is fixedly installed on the bottom surface inside the central control chamber 104. The pendulum 202 is installed inside the detection chamber 201. The first connecting rod 203 is fixedly installed on the upper end of the pendulum 202, and the middle part of the first connecting rod 203 is hinged to the upper surface of the detection chamber 201. The upper end of the first connecting rod 203 is hinged to the lower end of the second connecting rod 204, and the upper end of the second connecting rod 204 is hinged to the lower end of the piston rod 205. The upper surface of the detection chamber 201 is also fixed. A support frame 206 is installed, and a piston chamber 207 is provided at the upper end of the support frame 206. The piston rod 205 is slidably connected in the piston chamber 207. When a car collides, the pendulum ball 202 will swing in the direction of the collision due to inertial force. When the collision force reaches a set value, the first connecting rod 203 will rotate around the central hinge part, thereby driving the second connecting rod 204 to swing. During the swing, the second connecting rod 204 drives the piston rod 205 to move downward. When the piston rod 205 moves downward, a negative pressure will be generated in the piston chamber 207. This negative pressure will be connected to the trigger assembly through the air pipe.

[0038] For further details, please refer to... Figure 2 and Figure 3The triggering assembly includes a trigger disc 301 and a first slider 304. The trigger disc 301 is fixedly installed on the rear end face inside the central control compartment 104. The trigger disc 301 has a first groove 302 located on the central bisecting plane of the trigger disc 301. The trigger disc 301 also has a trigger air passage 306 located to the right of the first groove 302 and perpendicular to it. The first slider 304 is slidably connected inside the first groove 302. The trigger disc 301 also has a second groove 303, which is perpendicular to the first groove 302. The lower side of the second groove 303 is perpendicular to the first groove 302. The trigger plate 301 is externally connected. A second slider 305 is slidably connected within the second slide groove 303. A third slide groove is also provided on the first slider 304. The width of the third slide groove is the same as the width of the second slider 305, and the second slider 305 is slidably connected within the third slide groove. A slot is provided on the second slider 305, and the horizontal projection of the slot is a right-angled trapezoid. The right-angled side of the slot is located below the hypotenuse of the slot. The first slider 304 is located above the right-angled side of the slot. An electromagnetic coil 307 is also provided below the second slide groove 303. The electromagnetic coil 307 is fixedly installed on the trigger plate 301, and the inner ring of the electromagnetic coil 307 is connected to the second slide groove 304. The groove width of 03 is the same. Slider 305 is slidably connected to electromagnetic coil 307. When the negative pressure in piston chamber 207 increases, slider 304 will move to the left. The right side of slider 304 will move away from trigger air passage 306 and lock in its current position, keeping trigger air passage 306 open. At this time, the high-pressure cooling gas in gas cylinder 4 will be discharged into battery compartment through air pipe. Simultaneously, the BMS system on the car will be triggered, de-energizing electromagnetic coil 307. Slider 305 moves downward due to gravity, and the right-angled trapezoid on slider 305 will push slider 304 to the left. The high-pressure cooling gas in cylinder 4 will be transferred to the battery compartment through the gas pipe and locked. If the car's BMS system fails after a collision, the electromagnetic coil 307 will lose power, and the second slider 305 will move downwards and open the trigger gas passage 306. This ensures that after the vehicle is hit, the high-pressure cooling gas in cylinder 4 cools the battery pack 103 in the battery compartment, preventing the battery compartment cooling system from failing after a collision, which could easily cause the battery to spontaneously combust or explode, causing secondary injuries to people. This ensures that the battery temperature in the battery compartment is maintained within a safe range, ensuring the stability of the battery and the safety of the passengers.

[0039] Specifically, to ensure effective cooling of the battery pack 103, the high-pressure cooling gas stored in the gas cylinder 4 includes at least one of nitrogen, carbon dioxide, argon, or helium. The gas is stored in the gas cylinder 4 after compression. When the vehicle triggers emergency cooling, it enters the battery compartment through the trigger gas passage 306. Due to the decrease in pressure, the liquid rapidly evaporates into gas. In this process, the gas absorbs heat from the surrounding battery pack 103, thereby lowering the temperature in the battery compartment. Nitrogen is a non-flammable gas with excellent insulation and flame retardant properties. It can block the current conduction between battery packs 103 and also block the combustion medium inside the battery pack 103. Carbon dioxide, argon, and helium all have the same properties as nitrogen. These gases all have good cooling, insulation, and flame retardant properties.

[0040] For further details, please refer to... Figure 1 and Figure 6 Multiple cooling channels 6 are provided on the inner surface of the battery compartment, and the cooling channels 6 are evenly distributed vertically in a mesh pattern around the multiple battery packs 103. The vertically arranged cooling channels 6 can effectively improve the horizontal compressive stress. The side of the cooling channel 6 near the center of the battery compartment is in contact with the battery pack 103. The multiple cooling channels 6 are connected on the side near the upper end of the battery compartment, and the connection is also connected to the air inlet 8. The side of the cooling channel 6 near the lower cover 101 is connected to the exhaust port 706. When the high-pressure cooling gas enters the battery compartment, it will flow to the periphery of the battery pack 103 through the cooling channels 6 and absorb the heat on the battery pack 103, ensuring that the battery temperature in the battery compartment is maintained within a safe range, ensuring the stability of the battery and the safety of the passengers.

[0041] For further details, please refer to... Figure 4 , Figure 5 and Figure 6 Each of the multiple vent ports 705 is equipped with a one-way valve, which includes a valve core 701 and a return spring 703. Both ends of the multiple one-way valves are connected to the inside and outside of the battery compartment. The valve core 701 is slidably connected inside the vent port 706, and the return spring 703 is sleeved on the valve core 701. The two ends of the return spring 703 are fixedly connected to the vent port 706 and the valve core 701, respectively. When the high-pressure refrigeration gas enters the battery compartment, the air inside the battery compartment will flow through the vent port 706 to the valve core 701 of the one-way valve, and push the valve core 701 and the return spring 703 downward. The gas will be discharged to the outside of the battery compartment through the vent port 705, effectively cutting off the internal and external environment of the battery compartment, ensuring that the battery temperature inside the battery compartment is maintained within a safe range, and ensuring the stability of the battery and the safety of the passengers.

[0042] For further details, please refer to... Figure 4 and Figure 5Multiple exhaust ports 706 are provided with square grooves, which are perpendicular to the exhaust ports 706. Locking sliders 702 are slidably connected in each of the multiple square grooves. The upper end of the locking block is slidably connected to the right-angle surface of the valve core 701. Each of the multiple locking sliders 702 has an exhaust hole 705 in the vertical direction. A locking spring 704 is fixedly installed in the square groove. One end of the locking spring 704 is fixedly installed on the left end face of the square groove, and the other end is fixedly installed on the left end face of the locking slider 702. A locking air passage 707 is provided on the right side of the square groove. The locking air passage 707 is connected to the gas cylinder 4 through an air pipe.

[0043] It is easy to understand that when the high-pressure refrigerant gas in cylinder 4 is vented, the pressure inside cylinder 4 will drop. At this time, the pressure in the locking air passage 707 will also drop. The locking spring 704 will pop out to the right after losing the support on the right side, and push the locking slider 702 to move to the right. The locking slider 702 will stop when it moves to the right-angle side of the valve core 701 and lock the valve core 701. At this time, the valve core 701 will not be able to move up and down, ensuring that the battery temperature in the battery compartment is maintained within a safe range, ensuring the stability of the battery and the safety of the passengers.

[0044] As another embodiment of the present invention, please refer to Figure 7 , Figure 8 and Figure 9 The battery compartment can also be a skateboard type. Except for the structure of the battery compartment body, which is different from the above embodiment, the other components are the same as the above embodiment. This skateboard type battery protection compartment is suitable for new energy vehicles with height restrictions. Multiple cooling channels 6 are provided on the inner surface of the battery compartment. The cooling channels 6 are evenly distributed in a mesh pattern around the multiple battery packs 103. The horizontally arranged cooling channels 6 can effectively improve the compressive stress in the vertical direction. The side of the cooling channel 6 near the center of the battery compartment is in contact with the battery pack 103. The side of the multiple cooling channels 6 near the front end of the battery compartment is connected, and the connection is also connected to the cooling air channel 5. The side of the cooling channel 6 near the lower cover 101 is connected to the exhaust port 706. When the high-pressure cooling gas enters the battery compartment, it will flow to the periphery of the battery pack 103 through the cooling channels 6 and absorb the heat on the battery pack 103, ensuring that the battery temperature in the battery compartment is maintained within a safe range, ensuring the stability of the battery and the safety of the passengers.

[0045] During operation, when a car collides, the pendulum 202 swings in the direction of the impact due to inertia. When the impact force reaches a set value, the first connecting rod 203 will drive the second connecting rod 204 to swing, and drive the piston rod 205 to move downward. At this time, the negative pressure in the piston chamber 207 will increase instantaneously. This negative pressure will be connected to the first slide groove 302 through the air pipe. The first slider 304 will move to the left under the influence of the negative pressure. At this time, the BMS system on the car will also be triggered, de-energizing the electromagnetic coil 307. The second slider 305 will move downward due to gravity and lock the first slider 304. The trigger air passage 306 will be opened, and the high-pressure refrigerant gas in the gas cylinder 4 will be transferred to the battery compartment through the air pipe and flow to the outer surface of each battery pack 103 through the cooling channel 6. As gas continuously flows out of cylinder 4, the air in the battery compartment will flow through the exhaust port 706 to the one-way valve core 701, pushing the valve core 701 and the return spring 703 downward. The gas will be discharged outside the battery compartment through the exhaust port 705. When the high-pressure cooling gas in cylinder 4 is emptied, the pressure in cylinder 4 will drop. At this time, the pressure in the locking air passage 707 will also drop. The locking spring 704 will pop out to the right after losing the support on the right side, and push the locking slider 702 to the right. The locking slider 702 will stop when it moves to the right-angle side of the valve core 701 and lock the valve core 701. At this time, the valve core 701 will not be able to move up and down, ensuring that after the vehicle is hit, the high-pressure cooling gas in cylinder 4 will cool down the battery pack 103 in the battery compartment.

[0046] The embodiments of the present invention have been disclosed above in conjunction with the accompanying drawings, but this should not be construed as a limitation of the present invention. It can be applied to various fields suitable for the present invention. For those skilled in the art, changes, modifications, substitutions and variations can be made to the above embodiments. Therefore, without departing from the general concept defined by the claims and their equivalents, all such variations should be included within the protection scope of the present invention.

Claims

1. A new energy automobile battery protection bin, comprising an upper cover (102), a lower cover (101), and a battery pack (103); the upper cover (102) and the lower cover (101) cooperate to form a battery bin, a central control bin (104) and the battery pack (103) are arranged in the battery bin, and the central control bin (104) is located at the front end of the battery bin; characterized in that, The central control compartment (104) is equipped with a collision detection component, a triggering component, and a gas cylinder (4). The collision detection component and the triggering component are connected by a gas pipe, and the triggering component and the gas cylinder (4) are connected by a gas pipe. The gas cylinder (4) stores high-pressure refrigerated gas. The upper surface of the top cover (102) is also equipped with a cooling air channel (5). The cooling air channel (5) is connected to the triggering component by a gas pipe, and multiple air inlets (8) are provided between the cooling air channel (5) and the battery compartment. The collision detection component is equipped with a pendulum ball (2). 02), the trigger component is provided with a slider (304). When the impact force received by the collision detection component reaches the set value, the pendulum ball (202) swings under the impact force and drives the slider (304) to move to the left. The high-pressure refrigeration gas in the gas cylinder (4) is discharged into the battery compartment through the slider (304). The lower cover (101) is provided with multiple exhaust ports (706). The multiple exhaust ports (706) are all through holes. The two ends of the multiple exhaust ports (706) are respectively connected to the inner and outer surfaces of the battery compartment.

2. The new energy vehicle battery protection bin according to claim 1, characterized in that: The collision detection assembly includes a detection chamber (201), a pendulum (202), a first connecting rod (203), a second connecting rod (204), a piston rod (205), and a support frame (206). The detection chamber (201) is fixedly installed on the bottom surface inside the central control chamber (104). The pendulum (202) is installed inside the detection chamber (201). The first connecting rod (203) is fixedly installed on the upper end of the pendulum (202). The middle part is hinged to the upper end surface of the detection chamber (201). The upper end of the first connecting rod (203) is hinged to the lower end of the second connecting rod (204). The upper end of the second connecting rod (204) is hinged to the lower end of the piston rod (205). A support frame (206) is also fixedly installed on the upper end surface of the detection chamber (201). A piston chamber (207) is provided at the upper end of the support frame (206). The piston rod (205) is slidably connected in the piston chamber (207).

3. The new energy vehicle battery protection cabin according to claim 1, characterized in that: The triggering component includes a trigger disk (301) and a first slider (304). The trigger disk (301) is fixedly installed on the rear end face inside the central control compartment (104). The trigger disk (301) is provided with a first slide groove (302). The first slide groove (302) is located on the central bisecting plane of the trigger disk (301). The trigger disk (301) is also provided with a trigger air passage (306). The trigger air passage (306) is located on the right side of the first slide groove (302) and intersects the first slide groove (302) perpendicularly. The first slider (304) is slidably connected in the first slide groove (302).

4. The new energy vehicle battery protection bin according to claim 3, characterized in that: The trigger plate (301) is also provided with a second slide groove (303), which is perpendicular to the first slide groove (302). The lower side of the second slide groove (303) is connected to the outside of the trigger plate (301). A second slider (305) is slidably connected in the second slide groove (303). A third slide groove is also provided on the first slider (304). The width of the third slide groove is the same as the width of the second slider (305), and the second slider (305) is slidably connected in the third slide groove. The slider (305) has a slot, the horizontal projection of which is a right trapezoid. The right-angled side of the slot is located below the hypotenuse of the slot. The first slider (304) is located above the right-angled side of the slot. The second slide groove (303) is also provided with an electromagnetic coil (307) on its lower side. The electromagnetic coil (307) is fixedly installed on the trigger plate (301), and the inner circle of the electromagnetic coil (307) is the same as the width of the second slide groove (303). The second slider (305) is slidably connected inside the electromagnetic coil (307).

5. The battery protection compartment for new energy vehicles according to claim 1, characterized in that: Multiple cooling channels (6) are provided on the inner surface of the battery compartment. The cooling channels (6) are arranged vertically and evenly in a mesh pattern around the multiple battery packs (103). The cooling channel (6) is close to the battery pack (103) on the side near the center of the battery compartment. The multiple cooling channels (6) are connected on the side near the upper end of the battery compartment, and the connection is also connected to the air inlet (8). The cooling channel (6) is connected to the exhaust port (706) on the side near the lower cover (101).

6. The battery protection compartment for new energy vehicles according to claim 1, characterized in that: Multiple cooling channels (6) are provided on the inner surface of the battery compartment. The cooling channels (6) are evenly distributed in a mesh pattern around the multiple battery packs (103). The cooling channel (6) is close to the battery pack (103) on the side near the center of the battery compartment. The multiple cooling channels (6) are connected on the side near the front end of the battery compartment, and the connection is also connected to the cooling air passage (5). The cooling channel (6) is connected to the exhaust port (706) on the side near the lower cover (101).

7. A battery protection compartment for new energy vehicles according to claim 1, characterized in that: Each of the multiple exhaust ports (705) is equipped with a one-way valve, which includes a valve core (701) and a return spring (703). Both ends of the multiple one-way valves are connected to the inside of the battery compartment and the outside of the battery compartment. The valve core (701) is slidably connected inside the exhaust port (706). The return spring (703) is sleeved on the valve core (701). Both ends of the return spring (703) are fixedly connected to the exhaust port (706) and the valve core (701) respectively.

8. The battery protection compartment for new energy vehicles according to claim 1, characterized in that: Square grooves are also provided in the multiple exhaust ports (706), and the square grooves are perpendicular to the exhaust ports (706). Locking sliders (702) are slidably connected in the multiple square grooves. The upper end of the locking slider (702) is slidably connected to the right angle surface of the valve core (701). Exhaust holes (705) are provided in the vertical direction of the multiple locking sliders (702). Locking springs (704) are fixedly installed in the square grooves. One end of the locking spring (704) is fixedly installed on the left end face of the square groove, and the other end is fixedly installed on the left end face of the locking slider (702). Locking air passages (707) are provided on the right side of the square grooves. The locking air passages (707) are connected to the gas cylinder (4) through a gas pipe.

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