Chassis quick-change battery box for electric automobile

Abstract

The chassis quick-change battery box for the electric automobile comprises a heat dissipation mechanism, a vibration reduction assembly and a fire extinguishing assembly, the heat dissipation mechanism comprises a stirring circulation assembly and an active heat dissipation assembly, the heat dissipation mechanism is used for cooling a battery, the stirring circulation assembly is used for circulation of cooling liquid, and the active heat dissipation assembly is used for cooling the battery. The active heat dissipation assembly is used for taking away heat in cooling liquid, the vibration reduction assembly comprises a swing rod, a second piston, an overflow valve, a three-way valve, a second piston air outlet pipe, a first vibration reduction air pipe, a second vibration reduction air pipe, an air bag and a second piston one-way valve, and the vibration reduction assembly is used for reducing vertical vibration. One end of the second piston air outlet pipe is connected with the overflow valve, and the other end of the second piston air outlet pipe is connected with the second piston.

Description

Technical Field

[0001] The present invention relates to the field of new energy technology, and in particular to a chassis quick-change battery box for an electric vehicle. Background Art

[0002] The electric vehicle battery box is an important component used by electric vehicles to accommodate and protect battery packs. It is equivalent to the fuel tank of a traditional fuel vehicle. Its main function is to provide a safe and stable storage space for the battery.

[0003] Although the existing devices of this type are optimized for heat dissipation, they have lost some safety. For example, a battery box for an electric vehicle disclosed in Chinese Patent Publication No. "CN107170930A" uses a first heat dissipation hole, a second heat dissipation hole and a plurality of fans to dissipate heat for the battery, but the second heat dissipation hole is located on the side wall of the battery box of the device, which means that the inside of the battery box of the device can communicate with the outside world, and the battery of the device is located inside the battery box. Although a filter is set in the second heat dissipation hole, it can only prevent debris from entering the battery box, but cannot prevent water from entering the battery box. Due to the particularity of the battery, it is not safe to contact with water. Therefore, although the device is optimized for heat dissipation, it has lost some safety, resulting in insufficient safety. Accordingly, the present invention proposes a chassis quick-change battery box for electric vehicles. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a chassis quick-change battery box for an electric vehicle.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A chassis quick-change battery box for electric vehicles, comprising a heat dissipation mechanism, a vibration reduction component, and a fire extinguishing component. The heat dissipation mechanism comprises a stirring circulation component and an active heat dissipation component. The heat dissipation mechanism is used to provide heat dissipation for the battery, the stirring circulation component is used for the circulation of coolant, and the active heat dissipation component is used to take away the heat in the coolant.

[0007] The active heat dissipation component includes a heat dissipation air pipe, a piston group, a piston group one-way valve, a piston group air outlet pipe, a cover plate, a box body, and a heat dissipation fin group. The active heat dissipation component is used for active heat dissipation. The piston group one-way valve is connected to the piston group, and the cover plate is fixedly connected to the box body. The lower surface of the cover plate and the lower surface of the box body are both provided with heat dissipation grooves, and the position of each heat dissipation groove corresponds to the position of a fin on the heat dissipation fin group. One end of the heat dissipation air pipe is connected to the air outlet end of the overflow valve and the other end is connected to the inside of the heat dissipation groove on the cover plate, and the piston group air outlet pipe is connected to the inside of the heat dissipation groove on the bottom surface of the box body.

[0008] Preferably, the vibration reduction assembly includes a rocking arm, a No. 2 piston, a relief valve, a three-way valve, a No. 2 piston air outlet pipe, a No. 1 vibration reduction air pipe, a No. 2 vibration reduction air pipe, an air bag, and a No. 2 piston one-way valve. The vibration reduction assembly is used to reduce the vibration up and down. One end of the No. 2 piston air outlet pipe is connected to the relief valve, and the other end of the No. 2 piston air outlet pipe is connected to the inside of the No. 2 piston. The relief valve is connected in series with the three-way valve, and the three-way valve is fixedly arranged on the upper surface of the cover plate. The No. 2 piston one-way valve is connected to the No. 2 piston, and the No. 2 piston is fixedly connected to the upper surface of the cover plate. The rocking arm is located between the No. 1 piston and the No. 2 piston.

[0009] The fire extinguishing assembly includes a vacuum box, a connecting box, an air extraction box, an air suction pipe, and a connecting pipe. The fire extinguishing assembly is used for extinguishing fire. A sealing box is fixedly connected to the lower surface of the air extraction box. The vacuum box and the connecting box are connected through an air suction pipe. A plurality of connecting pipes connect a plurality of air extraction boxes to the connecting box. The connecting box is fixedly arranged on the upper surface of the cover plate, and the connecting pipe passes through the cover plate.

[0010] The stirring circulation component includes a counterweight block, a stirring plate, a tension spring, a push rod, a synchronous wheel, and a synchronous belt. The stirring circulation component is used for the circulation of coolant and the mixing of coolants at different temperatures. The tension spring is fixedly arranged on the rear side wall of the counterweight block, the bottom end of the stirring plate is fixedly connected to the center of the synchronous wheel, and the synchronous wheel is rotatably connected to the inner bottom surface of the box body.

[0011] Preferably, a No. 1 piston is fixedly connected to the upper surface of the cover plate, a No. 1 piston check valve is arranged on the No. 1 piston, a vibration-damping check valve is also fixedly arranged on the upper surface of the cover plate, and the heat dissipation fin group is fixedly connected to the box body.

[0012] Preferably, the No. 1 vibration-damping air pipe and the No. 2 vibration-damping air pipe are respectively connected in series with two vibration-damping one-way valves, and the No. 1 vibration-damping air pipe and the No. 2 vibration-damping air pipe are respectively connected to two airbags after being connected with the vibration-damping one-way valves.

[0013] Preferably, the sealing box is fixedly connected to the box body, and a guide tube is fixedly connected to the rear end of the sealing box. The guide tube passes through the box body and communicates with the heat dissipation fin group.

[0014] Preferably, the rocking arm is fixedly connected to a stirring plate, the synchronous belt is fixedly connected to the push rod, the push rod is fixedly connected to the counterweight block, the end of the counterweight block away from the push rod is fixedly connected to a push plate, and the front end of the push plate is in contact with the piston group.

[0015] Preferably, the interior of the vacuum box is communicated with the interior of the sealing box, and a paraffin plug is sealed at a position where the interior of the vacuum box is communicated with the interior of the sealing box.

[0016] Preferably, a rubber membrane is provided in the vacuum box, and the rubber membrane is located behind the suction pipe and covers the suction pipe. A vacuum box one-way valve is fixedly provided on the side wall of the vacuum box, and a vacuum box connecting pipe is sealedly connected to the vacuum box one-way valve. The vacuum box connecting pipe connects the vacuum box with the interior of piston No. 1, and the vacuum box is fixedly connected to the upper surface of the fixed plate.

[0017] Preferably, a heat dissipation one-way valve is provided at the rear end of the box body, a bayonet is fixedly connected to the upper surface of the cover plate, a bayonet block is slidably provided on the bayonet, a fixing plate is fixedly connected to the lower surface of the bayonet, the airbag is located between the fixing plate and the cover plate, and the lower surface of the airbag is fixedly connected to the upper surface of the cover plate, a limiting rod is also fixedly connected to the bayonet block, a limiting block is slidably provided on the limiting rod, and the thickness of the bayonet and the bayonet block are the same.

[0018] The present invention has the following beneficial effects:

[0019] 1. By setting up a heat dissipation mechanism, the battery of the device can be wrapped in a sealed box to achieve the purpose of isolating external debris and water, thereby making the operation of the battery more stable and safe. At the same time, the movement of the counterweight block during heat dissipation can also pump the coolant into the sealed box, allowing the coolant to flow in the sealed box, so that the coolant can circulate inside the device, allowing the coolant to take away the heat emitted by the battery, thereby allowing the heat dissipation mechanism to complete the heat dissipation.

[0020] 2. By setting up a fire extinguishing component and a rubber membrane, the paraffin plug of the battery in the device will be melted when a fire occurs, thereby connecting the fire site with the vacuum box. Since there is a vacuum inside the vacuum box, the air at the fire site will be sucked away, forming a vacuum there. The existence of the rubber membrane is similar to a one-way valve, which can prevent the backflow of air. This prevents the air in the vacuum box of the device from flowing back, thereby causing a lack of oxygen at the fire site, preventing the burning of the flame, and thus improving the safety performance of the device.

[0021] 3. By setting up the shock-absorbing component and using it in conjunction with the No. 2 piston, the inside of the airbag will be filled with air when in use. At the same time, the existence of the shock-absorbing one-way valve can prevent the air from being discharged from the airbag. Because the airbag is located between the cover plate and the fixed plate, and the air can be compressed, the vibration generated by the car's driving can be absorbed by the airbag when in use, which can reduce vibration and make the battery in the device run more stably.

[0022] 4. By setting up the piston group, the second piston, and the heat dissipation groove, the heat dissipation fin group can not only passively dissipate heat into the air, but also obtain auxiliary heat dissipation from the airflow from the heat dissipation groove. This is because the piston group and the second piston can inhale the outside air into the inside when the counterweight moves, and finally blow it out from the heat dissipation groove toward the fins on the heat dissipation fin group, which can further improve the heat dissipation effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of a chassis quick-change battery box for an electric vehicle proposed by the present invention;

[0024] Figure 2 for Figure 1 A magnified image;

[0025] Figure 3 for Figure 1 Enlarged view of point B;

[0026] Figure 4 for Figure 1 Enlarged view of point C;

[0027] Figure 5 This is a schematic diagram of the internal structure of a chassis quick-change battery box for an electric vehicle proposed by the present invention;

[0028] Figure 6 for Figure 5 Enlarged view of point D;

[0029] Figure 7 This is a schematic diagram of the internal structure of a sealing box for a chassis quick-change battery box for an electric vehicle proposed by the present invention;

[0030] Figure 8 for Figure 7 Enlarged view at E;

[0031] Fig. 9 This is a structural schematic diagram of a heat dissipation fin group for a chassis quick-change battery box for an electric vehicle proposed by the present invention;

[0032] Fig.10 This is a schematic diagram of the connection between the synchronous wheel and the stirring piece of the chassis quick-change battery box for electric vehicles proposed by the present invention;

[0033] Fig.11 This is a schematic diagram of the position of the heat dissipation slot of the cover plate of the chassis quick-change battery box for electric vehicles proposed by the present invention;

[0034] Fig.12 This is a structural schematic diagram of a heat dissipation slot of a cover plate of a chassis quick-change battery box for an electric vehicle proposed by the present invention;

[0035] Fig.13This is a structural schematic diagram of a piston group for a chassis quick-change battery box for an electric vehicle proposed by the present invention;

[0036] Fig.14 This is a schematic structural diagram of a heat dissipation slot at the bottom of a chassis quick-change battery box for an electric vehicle proposed by the present invention;

[0037] Fig.15 A schematic diagram of the position of a rubber membrane of a chassis quick-change battery box for an electric vehicle proposed by the present invention;

[0038] Fig.16 A schematic diagram of the position of a paraffin plug of a chassis quick-change battery box for an electric vehicle proposed by the present invention;

[0039] Fig.17 This is a schematic diagram of the position of a heat dissipation one-way valve of a chassis quick-change battery box for an electric vehicle proposed by the present invention;

[0040] Fig.18 This is a cross-sectional view of a limit rod for a chassis quick-change battery box for an electric vehicle proposed by the present invention.

[0041] In the figure: 1 cover plate, 2 fixing plate, 3 No. 1 piston, 4 vacuum box, 5 rocker arm, 6 No. 2 piston, 7 relief valve, 8 three-way valve, 9 heat dissipation air pipe, 10 No. 1 vibration damping air pipe, 11 No. 2 piston outlet pipe, 12 vibration damping one-way valve, 13 No. 2 vibration damping air pipe, 14 bayonet, 15 clamping block, 16 heat dissipation one-way valve, 17 limit rod, 18 limit block, 19 heat dissipation fin group, 20 box body, 21 piston group one-way valve, 22 connection box, 23 Vacuum box, 24 connecting pipe, 25 stirring plate, 26 piston group, 27 counterweight, 28 battery, 29 sealing box, 30 tension spring, 31 push rod, 32 synchronous wheel, 33 synchronous belt, 34 piston group outlet pipe, 35 heat dissipation groove, 36 push plate, 37 suction pipe, 38 rubber membrane, 39 No. 1 piston one-way valve, 40 vacuum box one-way valve, 41 paraffin plug, 42 air bag, 43 No. 2 piston one-way valve, 44 guide pipe, 45 vacuum box connecting pipe. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0043] Embodiment 1:

[0044] A chassis quick-change battery box for an electric vehicle comprises a heat dissipation mechanism, a vibration reduction component, and a fire extinguishing component. The heat dissipation mechanism comprises a stirring circulation component and an active heat dissipation component. The heat dissipation mechanism is used to provide heat dissipation for the battery, the stirring circulation component is used for the circulation of coolant, and the active heat dissipation component is used to take away the heat in the coolant.

[0045] The vibration reduction assembly includes a rocking arm 5, a No. 2 piston 6, a relief valve 7, a three-way valve 8, a No. 2 piston outlet pipe 11, a No. 1 vibration reduction air pipe 10, a No. 2 vibration reduction air pipe 13, an air bag 42, and a No. 2 piston one-way valve 43. The vibration reduction assembly is used to reduce the upper and lower vibrations. A vibration reduction one-way valve 12 is also fixedly provided on the upper surface of the cover plate 1. The No. 1 vibration reduction air pipe 10 and the No. 2 vibration reduction air pipe 13 are respectively connected to the two air bags 42 after being connected to the vibration reduction one-way valve 12. The No. 1 vibration reduction air pipe 10 and the No. 2 vibration reduction air pipe 13 are respectively connected in series with the two vibration reduction one-way valves 12.

[0046] The airbag 42 is located between the fixed plate 2 and the cover plate 1, and the lower surface of the airbag 42 is fixedly connected to the upper surface of the cover plate 1, one end of the No. 2 piston air outlet pipe 11 is connected to the overflow valve 7, and the other end of the No. 2 piston air outlet pipe 11 is connected to the inside of the No. 2 piston 6, the overflow valve 7 is connected in series with the three-way valve 8, and the three-way valve 8 is fixedly arranged on the upper surface of the cover plate 1, the No. 2 piston check valve 43 is connected to the No. 2 piston 6, and the No. 2 piston 6 is fixedly connected to the upper surface of the cover plate 1, and the guide pipe 44 passes through the box body 20 and communicates with the heat dissipation fin group 19.

[0047] The upper surface of the cover plate 1 is fixedly connected to the first piston 3, the rocking arm 5 is located between the first piston 3 and the second piston 6, and the rocking arm 5 is fixedly connected to a stirring blade 25.

[0048] The stirring circulation assembly includes a counterweight 27, a stirring piece 25, a tension spring 30, a push rod 31, a synchronous wheel 32, and a synchronous belt 33. The synchronous belt 33 is fixedly connected to the push rod 31, and the push rod 31 is fixedly connected to the counterweight 27. The stirring circulation assembly is used for the circulation of coolant and the mixing of coolants at different temperatures. The tension spring 30 is fixedly arranged on the rear side wall of the counterweight 27. The end of the counterweight 27 away from the push rod 31 is fixedly connected to a push plate 36. The front end of the push plate 36 is in contact with the piston group 26. The bottom end of the stirring piece 25 is fixedly connected to the center of the synchronous wheel 32. The synchronous wheel 32 is rotatably connected to the inner bottom surface of the box body 20.

[0049] In this embodiment, reference Figure 1-14 The car will be vibrated during driving. When the device is subjected to vibration from the front and rear directions, the counterweight block 27 will move forward and backward. The tension spring 30 can provide a force equal to the weight of the counterweight block 27. When the counterweight block 27 moves, the counterweight block 27 can be reset under the action of the tension spring 30. Figure 8 as well as Figure 6 When the counterweight 27 moves, the push plate 36 pushes the output rod of the piston group 26 to extend and retract, so that the piston group 26 pumps air. Figure 8 as well as Fig.10, the push rod 31 will also move the synchronous belt 33 under the push of the counterweight 27, and let the synchronous belt 33 drive the synchronous wheel 32 to rotate at a certain angle, and finally drive the stirring piece 25 and the rocking arm 5 to swing. At the same time, under the action of the counterweight 27, the coolant in the box 20 will pass through the hole on the sealing box 29 as the counterweight 27 moves. The position of the hole can be referred to Figure 7 Enter the interior of the sealed box 29. The internal structure of the sealed box 29 can be referred to Figure 7 After the coolant is pressed into the sealed box 29 , it will absorb the heat generated by the battery 28 . Since the vibration of the car is continuous during driving, the coolant will be continuously pressed into the sealed box 29 .

[0050] For further reference, Figure 7 At the position of the middle guide pipe 44, since the vibration of the car during driving is continuous, the coolant will also continuously enter the interior of the sealing box 29. The coolant that first enters the sealing box 29 will flow into the side of the heat dissipation fin group 19 with holes through the guide pipe 44 after absorbing the heat of the battery 28. This side will be sealed, and at the same time, the part of the heat dissipation fin group 19 on the other side opposite to it will contact the outside world, and the heat in the coolant will be transferred to the outside world. At the same time, with the cooperation of the active heat dissipation component, the heat will be dissipated more quickly. When the hot coolant enters the side of the heat dissipation fin group 19 with holes, the cooled coolant will flow out from the heat dissipation one-way valve 46 and enter the box body 20 again.

[0051] Furthermore, since the movement of the counterweight block 27 causes the stirring blade 25 to swing, when the cold coolant enters the box body 20, the swing of the stirring blade 25 causes the cold coolant to be stirred and mixed with the slightly hotter coolant in the box body 20, thereby achieving the effect of lowering the overall coolant temperature in the box body 20.

[0052] Embodiment 2: Different from Embodiment 1, reference Figure 1 , Figure 2-5 as well as Figure 8 and Fig.10 , which is different from the first embodiment, this embodiment has the following further contents:

[0053] The active heat dissipation component includes a heat dissipation air pipe 9, a piston group 26, a piston group one-way valve 21, a piston group outlet pipe 34, a cover plate 1, a box body 20, and a heat dissipation fin group 19. One end of the heat dissipation air pipe 9 is connected to the outlet end of the overflow valve 7 and the other end is connected to the inside of the heat dissipation groove 35 on the cover plate 1. The piston group outlet pipe 34 is connected to the inside of the heat dissipation groove 35 on the bottom surface of the box body 20.

[0054] The piston group check valve 21 is connected to the piston group 26, the active heat dissipation component is used for active heat dissipation, the cover plate 1 is fixedly connected to the box body 20, and the rear end of the box body 20 is provided with a heat dissipation check valve 46

[0055] The upper surface of the cover plate 1 is fixedly connected with a latch pin 14, and a latch block 15 is slidably provided on the latch pin 14. The latch pin 14 and the latch block 15 have the same thickness. A limit rod 17 is also fixedly connected to the latch block 15, and a limit block 18 is slidably provided on the limit rod 17. The lower surface of the latch block 15 is fixedly connected with a fixed plate 2.

[0056] The lower surface of the cover plate 1 and the lower surface of the box body 20 are both provided with heat dissipation grooves 35 . The position of each heat dissipation groove 35 corresponds to the position of the fins on the heat dissipation fin group 19 . The heat dissipation fin group 19 is fixedly connected to the box body 20 .

[0057] In this embodiment, the air inlet end of the No. 1 piston check valve 39 on the No. 1 piston 3 is connected to the inside of the No. 1 piston 3, and the air outlet end is connected to the outside. The air inlet end of the vacuum box check valve 40 is connected to the inside of the vacuum box 4, and the air outlet end is connected to the vacuum box connecting pipe 45. This allows the No. 1 piston 3 to discharge the gas in the vacuum box 4 during operation, so that the vacuum box 4 has a certain vacuum degree. However, due to the presence of the paraffin plug 41, the vacuum box 4 cannot inhale air from the sealing box 29, so that a certain vacuum degree can be maintained in the vacuum box 4. It should be noted that a reset spring is provided in each piston of the device.

[0058] Furthermore, the air inlet end of the No. 2 piston one-way valve 43 on the No. 2 piston 6 is connected to the outside, and the air outlet end is the same as the inside of the No. 2 piston 6. When working, the No. 2 piston 6 will suck the gas from the outside into the No. 2 piston 6 through the No. 2 piston one-way valve 43. Due to the unidirectional conductivity of the one-way valve, the gas will enter the overflow valve 7 from the No. 2 piston outlet pipe 11.

[0059] Furthermore, the interior of the overflow valve 7 is connected to the first interface of the three-way valve 8, the second interface is connected to the No. 1 vibration-damping air pipe 10, and the third interface is connected to the No. 2 vibration-damping air pipe 13. The No. 1 vibration-damping air pipe 10 and the No. 2 vibration-damping air pipe 13 are respectively connected to a vibration-damping one-way valve 12. The connection method of the vibration-damping one-way valve 12 is as follows: after the No. 1 vibration-damping air pipe 10 or the No. 2 vibration-damping air pipe 13 is led out from the three-way valve 8, it is first connected to the air inlet end of the vibration-damping one-way valve 12, and then connected to the airbag 42 from the air outlet end of the vibration-damping one-way valve 12, and the heat dissipation air pipe 9 is directly connected to the air outlet of the overflow valve 7.

[0060] Furthermore, when in use, the swing of the rocker arm 5 will provide power for the No. 1 piston 3 and the No. 2 piston 6. The No. 2 piston 6 will inhale air from the outside and pump the gas into the overflow valve 7. Since the interior of the overflow valve 7 is connected to the three-way valve 8, and the overflow valve 7 will be opened only when the internal pressure reaches a certain value, and because of the existence of the airbag 42, the gas will first enter the airbag 42 through the vibration reduction one-way valve 12 and stay in the airbag 42, causing the airbag 42 to expand, so that it can provide vibration reduction when subjected to vibration. Since the internal space of the airbag 42 is limited, when it is filled with gas, the gas provided by the No. 2 piston 6 will not be able to enter the airbag 42. At this time, if the No. 2 piston 6 continues to pump air, the pressure in the overflow valve 7 will rise, and eventually the air outlet of the overflow valve 7 will open, allowing the gas to enter the heat dissipation groove 35 of the cover plate 1 through the heat dissipation air pipe 9. Its position is referenced Fig.11 and Fig.12 The heat is ejected from the heat dissipation slot 35 and blown toward the heat dissipation fin group 19 from top to bottom to dissipate heat from the fins.

[0061] For further reference, Figure 1 and Fig. 9 The heat sink fin group 19 is composed of a plurality of heat sink fins, and the side with holes will be sealed after the cover plate 1 is connected to the box body 20, and the opposite side is located outside. The side with holes will contact with the coolant in the box body 20 when in use. Fig.11 As shown, the plurality of heat dissipation slots 35 correspond one to one with the positions on the heat dissipation fin group 19 .

[0062] Further references Figure 1 as well as Figure 6 and Fig.13 The piston group 26 is composed of a plurality of pistons connected in series through the piston group outlet pipe 34. The inlet end of the piston group check valve 21 is connected to the outside, and the outlet end is connected to the inside of the piston group 26. The gas entering the piston group 26 will be discharged through the piston group outlet pipe 34. Fig.14 The position of the piston group outlet pipe 34 and the structure of the heat dissipation groove 35 on the box body 20, when the gas is discharged from the piston group outlet pipe 34, it will enter the heat dissipation groove 35 on the box body 20, and then refer to Figure 4 The gas will eventually be ejected from the heat dissipation slots 35 on the housing 20 to dissipate heat from the heat dissipation fin group 19 from bottom to top.

[0063] refer to Fig.15The rubber membrane 38 is rectangular and its area is much larger than the cross-sectional area of ​​the air intake pipe 37. Among the parts where the rubber membrane 38 fits the inner wall of the vacuum box 4, only a small part near the top is adhered to the inner wall of the vacuum box 4, and the other parts are just attached to the inner wall of the vacuum box 4. Therefore, the rubber membrane 38 will hang down due to gravity. When the battery 28 catches fire, the air sucked out from the sealing box 29 will enter the vacuum box 4 through the air intake pipe 37. Before entering the vacuum box 4, the rubber membrane 38 will be blown open and then enter the vacuum box 4. Since combustion requires air, and the vacuum box 4 has previously sucked in air, when the air wants to flow back into the sealing box 29, since the area of ​​the rubber membrane 38 is much larger than the cross-sectional area of ​​the air intake pipe 37, when the air flows back, the rubber membrane 38 will block the air outlet end of the air intake pipe 37 to prevent the drawn air from flowing back.

[0064] Embodiment 3: The lower surface of the vacuum box 23 is fixedly connected to a sealing box 29, the rear end of the sealing box 29 is fixedly connected to a guide tube 44, the sealing box 29 is fixedly connected to the box body 20, and the interior of the vacuum box 23 is connected to the interior of the sealing box 29.

[0065] The No. 1 piston 3 is provided with a No. 1 piston check valve 39, and a vacuum box check valve 40 is fixedly provided on the side wall of the vacuum box 4. A vacuum box connecting pipe 45 is sealed and connected to the vacuum box check valve 40. A rubber membrane 38 is provided in the vacuum box 4. The rubber membrane 38 is located behind the suction pipe 37 and covers the suction pipe 37. The vacuum box connecting pipe 45 connects the vacuum box 4 with the inside of the No. 1 piston 3.

[0066] In this embodiment, when the battery 28 in the device catches fire, since the vacuum box 23 is connected to the interior of the sealing box 29, that is, the vacuum box 23 is connected to the internal space where the battery 28 is stored, the connected part is sealed by the paraffin plug 41, and the paraffin plug 41 can be melted when the battery 28 catches fire, thereby allowing the sealed part to be conductive. At the same time, since the connecting pipe 24 is connected to the connecting box 22, and the connecting box 22 is connected to the vacuum box 4, when the battery 28 catches fire, the paraffin plug 41 will be melted due to the high temperature, thereby allowing the sealed position to be conductive. Because the vacuum box 4 is connected to the interior of the vacuum box 23 and the connecting box 22, and because there is a vacuum degree in the vacuum box 4, when the paraffin plug 41 is melted, the air in the part of the sealing box 29 where the battery 28 is stored will be sucked away, and a vacuum will be formed in the part of the sealing box 29 where the battery 28 is stored, thereby extinguishing the fire of the battery 28.

[0067] For further reference, Figure 3The fixing plate 2 needs to be connected to the chassis of the car. When the device is installed, the bayonet 14 can be inserted into the hole between the clamping blocks 15. At this time, the limit rod 17 will be inserted into the groove of the bayonet 14. In this process, the limit block 18 will retract into the limit rod 17. When the bayonet 14 completely falls on the position of the limit rod 17 of the fixing plate 2, the hole on the bayonet 14 cooperates with the limit rod 17. There is a spring behind the limit block 18. Fig.18 Under the action of the spring, the limit block 18 will pop out from the limit rod 17, and the lower surface of the limit block 18 will fit with the upper surface of the latch 14, thereby completing the installation of the device.

[0068] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A chassis quick-change battery box for electric vehicles, including a heat dissipation mechanism, a vibration reduction component, and a fire extinguishing component, characterized in that: The heat dissipation mechanism includes a stirring circulation component and an active heat dissipation component. The heat dissipation mechanism is used to provide heat dissipation for the battery, the stirring circulation component is used for circulation of the coolant, and the active heat dissipation component is used to take away the heat in the coolant; The active heat dissipation component comprises a heat dissipation air pipe (9), a piston group (26), a piston group one-way valve (21), a piston group air outlet pipe (34), a cover plate (1), a box body (20), and a heat dissipation fin group (19). The active heat dissipation component is used for active heat dissipation. The piston group one-way valve (21) is connected to the piston group (26). The cover plate (1) is fixedly connected to the box body (20). The lower surface of the cover plate (1) and the lower surface of the box body (20) are both provided with heat dissipation grooves (35). The position of each heat dissipation groove (35) corresponds to the position of a fin on the heat dissipation fin group (19). One end of the heat dissipation air pipe (9) is connected to the air outlet end of the overflow valve (7), and the other end is connected to the inside of the heat dissipation groove (35) on the cover plate (1). The piston group air outlet pipe (34) is connected to the inside of the heat dissipation groove (35) on the bottom surface of the box body (20).

2. The quick-change battery box for chassis of electric vehicles according to claim 1, characterized in that: The vibration reduction assembly comprises a rocking arm (5), a No. 2 piston (6), a relief valve (7), a three-way valve (8), a No. 2 piston air outlet pipe (11), a No. 1 vibration reduction air pipe (10), a No. 2 vibration reduction air pipe (13), an air bag (42), and a No. 2 piston one-way valve (43). The vibration reduction assembly is used to reduce the vibration up and down. One end of the No. 2 piston air outlet pipe (11) is connected to the relief valve (7), and the other end of the No. 2 piston air outlet pipe (11) is connected to the inside of the No. 2 piston (6). The relief valve (7) and the three-way valve (8) are connected in series. The three-way valve (8) is fixedly arranged on the upper surface of the cover plate (1). The No. 2 piston one-way valve (43) is connected to the No. 2 piston (6). The No. 2 piston (6) is fixedly connected to the upper surface of the cover plate (1). The rocking arm (5) is located between the No. 1 piston (3) and the No. 2 piston (6). The fire extinguishing assembly comprises a vacuum box (4), a connecting box (22), an air extraction box (23), an air suction pipe (37), and a connecting pipe (24); the fire extinguishing assembly is used for extinguishing fire; a sealing box (29) is fixedly connected to the lower surface of the air extraction box (23); the vacuum box (4) and the connecting box (22) are connected via the air suction pipe (37); a plurality of connecting pipes (24) connect a plurality of air extraction boxes (23) and the connecting box (22); the connecting box (22) is fixedly arranged on the upper surface of the cover plate (1); and the connecting pipe (24) passes through the cover plate (1); The stirring circulation component comprises a counterweight (27), a stirring piece (25), a tension spring (30), a push rod (31), a synchronous wheel (32), and a synchronous belt (33). The stirring circulation component is used for the circulation of coolant and the mixing of coolants at different temperatures. The tension spring (30) is fixedly arranged on the rear side wall of the counterweight (27). The bottom end of the stirring piece (25) is fixedly connected to the center of the synchronous wheel (32). The synchronous wheel (32) is rotatably connected to the inner bottom surface of the box body (20).

3. The quick-change battery box for chassis of electric vehicles according to claim 1, characterized in that: A No. 1 piston (3) is fixedly connected to the upper surface of the cover plate (1), a No. 1 piston check valve (39) is arranged on the No. 1 piston (3), a vibration-damping check valve (12) is also fixedly arranged on the upper surface of the cover plate (1), and the heat dissipation fin group (19) is fixedly connected to the box body (20).

4. The quick-change battery box for chassis of electric vehicles according to claim 2, characterized in that: The first vibration-damping air pipe (10) and the second vibration-damping air pipe (13) are respectively connected in series with two vibration-damping one-way valves (12); and the first vibration-damping air pipe (10) and the second vibration-damping air pipe (13) are respectively connected to two air bags (42) after being connected to the vibration-damping one-way valves (12).

5. The quick-change battery box for chassis of electric vehicles according to claim 2, characterized in that: The sealing box (29) is fixedly connected to the box body (20), and a guide tube (44) is fixedly connected to the rear end of the sealing box (29). The guide tube (44) passes through the box body (20) and communicates with the heat dissipation fin group (19).

6. The quick-change battery box for chassis of electric vehicles according to claim 2, characterized in that: The rocking arm (5) is fixedly connected to a stirring plate (25), the synchronous belt (33) is fixedly connected to the push rod (31), the push rod (31) is fixedly connected to the counterweight (27), and the end of the counterweight (27) away from the push rod (31) is fixedly connected to a push plate (36), and the front end of the push plate (36) is in contact with the piston group (26).

7. The quick-change battery box for chassis of electric vehicles according to claim 2, characterized in that: The interior of the vacuum box (23) is in communication with the interior of the sealing box (29), and a paraffin plug (41) is provided in a sealed manner at a position where the interior of the vacuum box (23) is in communication with the interior of the sealing box (29).

8. The quick-change battery box for chassis of electric vehicles according to claim 2, characterized in that: A rubber membrane (38) is arranged inside the vacuum box (4), and the rubber membrane (38) is located behind the suction pipe (37) and covers the suction pipe (37). A vacuum box one-way valve (40) is fixedly arranged on the side wall of the vacuum box (4), and a vacuum box connecting pipe (45) is sealedly connected to the vacuum box one-way valve (40). The vacuum box connecting pipe (45) connects the vacuum box (4) with the interior of the No. 1 piston (3), and the vacuum box (4) is fixedly connected to the upper surface of the fixed plate (2).

9. The quick-change battery box for chassis of electric vehicles according to claim 1, characterized in that: A heat dissipation one-way valve (46) is provided at the rear end of the box body (20); a bayonet (14) is fixedly connected to the upper surface of the cover plate (1); a bayonet block (15) is slidably provided on the bayonet pin (14); a fixing plate (2) is fixedly connected to the lower surface of the bayonet block (15); the airbag (42) is located between the fixing plate (2) and the cover plate (1), and the lower surface of the airbag (42) is fixedly connected to the upper surface of the cover plate (1); a limiting rod (17) is also fixedly connected to the bayonet block (15); a limiting block (18) is slidably provided on the limiting rod (17); and the bayonet pin (14) and the bayonet block (15) have the same thickness.

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