A safety protection device for the power battery of an electric trackless rubber-wheeled vehicle

Abstract

This application relates to a safety protection device for the power battery of an electric trackless rubber-wheeled vehicle, belonging to the technical field of battery safety. It is installed on the vehicle body where the power battery is located and includes a battery platform and a cooling assembly. The battery platform includes a supporting platform and a sliding platform. The supporting platform is connected to the vehicle body and has an upturned side. The sliding platform is slidably mounted on the supporting platform. The power battery is mounted on the sliding platform. The cooling assembly includes a first nozzle and a second nozzle. At least two first nozzles are provided, located on both sides of the power battery, and at least two second nozzles are provided, located at both ends of the power battery. The first nozzles can swing horizontally and vertically, and have two spraying modes: columnar spray and fan-shaped spray. The spray range of the first nozzle covers both sides of the power battery, and the spray range of the second nozzle covers the end face of the power battery. This application improves the spraying effect of the cooling medium on the power battery.

Description

Technical Field

[0001] This application relates to the technical field of battery safety, and in particular to a power battery safety protection device for an electric trackless rubber-wheeled vehicle. Background Technology

[0002] In modern industrial transportation, electric trackless rubber-tired vehicles are widely used in mines, ports, factories, and other locations due to their flexible mobility and efficient transportation capabilities. While these vehicles are environmentally friendly, energy-saving, and have low operating costs, battery fires have become a major safety concern.

[0003] Currently, to improve the safety performance of batteries on electric trackless rubber-wheeled vehicles, the batteries are equipped with explosion-proof shells and cooling nozzles are installed on the sides of the batteries. Multiple temperature sensors are evenly distributed inside the explosion-proof shells. These temperature sensors can detect abnormal changes in battery temperature. The explosion-proof shells prevent abnormally high battery temperatures from spreading to the external environment. The cooling nozzles spray cooling media onto the explosion-proof shells to lower their temperature, ensuring that even if the battery temperature is abnormal, it is unlikely to cause a safety accident.

[0004] In the above solution, since the position and spraying angle of the cooling nozzles are fixed and all the cooling nozzles spray together, it is difficult to achieve precise cooling when only a local temperature is abnormal in the battery, and it is difficult to achieve full coverage when multiple parts of the battery have abnormal temperatures. In particular, the top and bottom surfaces of the explosion-proof shell cannot be effectively sprayed, resulting in poor spraying effect of the cooling medium. Summary of the Invention

[0005] In order to improve the spraying effect of the cooling medium on the power battery, this application provides a power battery safety protection device for an electric trackless rubber-wheeled vehicle.

[0006] This application provides a power battery safety protection device for an electric trackless rubber-wheeled vehicle, which adopts the following technical solution:

[0007] A safety protection device for the power battery of an electric trackless rubber-wheeled vehicle, for installation on the vehicle body where the power battery is located, includes:

[0008] Battery platform, including support platform and sliding platform;

[0009] The support frame is connected to the vehicle body and is raised on the side. The sliding frame is slidably mounted on the support frame in the direction of approaching or away from the raised side of the support frame. The power battery is mounted on the sliding frame.

[0010] A cooling component is used to spray a cooling medium onto a power battery. The cooling component includes a first nozzle, a first nozzle head, a second nozzle, and a second nozzle head.

[0011] At least two first nozzles are provided on the vehicle body and are located on both sides of the power battery respectively. At least two sets of first nozzles are provided and are connected to the first nozzles one by one. Each set of first nozzles is provided with at least one. At least two second nozzles are provided on the vehicle body and are located at both ends of the power battery respectively. At least two second nozzles are provided and are connected to the second nozzles one by one.

[0012] The first nozzle can swing horizontally and vertically relative to the first nozzle pipe. The first nozzle has two spraying modes that can be switched between: columnar spraying and fan-shaped spraying. The spraying range of the first nozzle covers the two sides of the power battery that is close to it, and the spraying range of the second nozzle covers the end face of the power battery.

[0013] Optionally, a connecting pipe, a rotating bend, and a swing block are sequentially arranged between the first nozzle and the first nozzle. The two ends of the connecting pipe are respectively connected to the first nozzle and the rotating bend. The rotating bend is rotatably connected to the connecting pipe and its rotation axis is set vertically. The swing block is rotatably connected to the opening of the rotating bend and its rotation axis is set horizontally. The first nozzle is connected to the swing block and is connected to the rotating bend.

[0014] Optionally, the first nozzle includes a cylindrical nozzle, a fan-shaped nozzle, and a switching element. The cylindrical nozzle is connected to the first spray pipe and has two symmetrically opened switching holes. The fan-shaped nozzle is rotatably sleeved on the cylindrical nozzle. The switching element is disposed inside the cylindrical nozzle and is used to form a spraying channel inside the cylindrical nozzle that is adapted to the spraying width of the fan-shaped nozzle.

[0015] When the fan-shaped nozzle rotates to the vertical position, it connects with the cylindrical nozzle through the switching hole, and the switching component forms a spraying channel. When the fan-shaped nozzle rotates to the horizontal position, it closes the switching hole, and the switching component releases the spraying channel.

[0016] Optionally, the cylindrical nozzle is arranged with the outer circle of the cross-section along the axial direction inside the square, and two switching holes are opened on the two opposite inner walls of the cylindrical nozzle. The switching component includes two opposite switching plates, and power plates are hinged to both ends of the switching plates. The switching plates are connected to the inner wall of the cylindrical nozzle without switching holes through the power plates. The power plate closer to the spray end of the cylindrical nozzle is hinged to the inner wall of the cylindrical nozzle, and the power plate farther away from the spray end of the cylindrical nozzle is slidably connected to the inner wall of the cylindrical nozzle.

[0017] Optionally, a pull rope is connected to the power plate that is slidably connected to the inner wall of the cylindrical nozzle. The pull rope slides through the side wall of the cylindrical nozzle, and the other end of the pull rope is connected to the fan-shaped nozzle. A clearance groove is provided on the inner wall of the fan-shaped nozzle to allow the pull rope to move. When the fan-shaped nozzle is connected to the cylindrical nozzle, the fan-shaped nozzle drives the pull rope to make the switching plate form a spray channel.

[0018] Optionally, a torsion spring is provided at the hinge joint between the switching plate and the power plate, and the torsion spring is used to drive the switching plate to be arranged parallel to the power plate.

[0019] Optionally, two sliding platforms are provided, with both sides of the support platform being raised. The two sliding platforms can slide to the two raised sides of the support platform respectively. Two power batteries are provided and are respectively installed on the two sliding platforms. Two cooling components are provided and spray cooling medium onto the two power batteries respectively.

[0020] Optionally, the sliding platform is connected to a telescopic rod, the movable end of which is hinged to a connecting rod, the connecting rod being connected to a first nozzle near the outer side of the vehicle body, and the connecting rod being slidably connected to the vehicle body.

[0021] Optionally, all the first nozzles and all the second nozzles are connected to a storage tank, which is used to store the cooling medium. The storage tank is connected to a pressure tank, which contains pressurized gas.

[0022] Optionally, a power cylinder is hinged between the sliding platform and the support platform.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] This application discloses a power battery safety protection device for an electric trackless rubber-wheeled vehicle, comprising a battery platform and a cooling assembly. When the power battery temperature is abnormal, the sliding platform can slide to the tilted side of the supporting platform, causing the power battery to deflect. When only a localized area on the side of the power battery experiences abnormal temperature, the first nozzle is swung to face the abnormal temperature location, switching to a columnar spray mode to precisely cool the abnormal area. When multiple areas on the side of the power battery experience abnormal temperature, the first nozzle continuously swings horizontally and switches to a fan-shaped spray mode, with the first and second nozzles working together to comprehensively cool the power battery. When the end face temperature of the power battery is abnormal, the second nozzle sprays cooling material onto the end face. Through the above analysis, this application achieves both precise localized cooling and comprehensive cooling coverage, thereby improving the spraying effect of the cooling medium on the power battery. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure installed on the vehicle body according to an embodiment of this application;

[0026] Figure 2 This is a structural schematic diagram of an embodiment of this application;

[0027] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0028] Figure 4 This is a schematic diagram of the first nozzle;

[0029] Figure 5 This is a structural schematic diagram of the switching component;

[0030] Figure 6 yes Figure 2 Enlarged view at point B;

[0031] Figure 7 This is a schematic diagram of the structure of the pull rope and the slider;

[0032] Figure 8 This is a schematic diagram of the clearance groove.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Battery stand; 2. Support stand; 3. Sliding stand; 31. Telescopic rod; 32. Connecting rod; 33. Power cylinder; 34. Roller; 4. Cooling component; 5. First nozzle; 51. Connecting pipe; 511. First dust cover; 52. Rotating bend; 53. Swing block; 54. Support rod; 55. First motor; 56. Second motor; 57. Electrically controlled valve; 6. First nozzle; 61. Columnar nozzle; 611. Switching hole; 612. Slide groove; 613. Second dust cover; 62. Fan-shaped nozzle; 621. Clearance groove; 622. Third motor; 63. Switching component; 631. Switching plate; 632. Power plate; 633. Pull rope; 634. Torsion spring; 635. Slider; 7. Second nozzle; 8. Second nozzle; 9. Storage tank; 91. Pressure tank. Detailed Implementation

[0035] The following combination Figures 1-8 This application will be described in further detail.

[0036] This application discloses a safety protection device for the power battery of an electric trackless rubber-wheeled vehicle. (Refer to...) Figure 1 A power battery safety protection device for an electric trackless rubber-wheeled vehicle is used to install on the vehicle body where the power battery is located, and includes a battery stand 1 and a cooling component 4.

[0037] Reference Figure 2 The battery stand 1 includes a support stand 2 and a sliding stand 3.

[0038] Reference Figure 1 and Figure 2The support frame 2 is fixed to the vehicle body and has an arc-shaped raised side. The sliding frame 3 is slidably mounted on the support frame 2 along the direction close to or away from the raised side of the support frame 2. The power battery is fixed to the sliding frame 3. In the initial state, the power battery is in a horizontal state on the sliding frame 3. When the sliding frame 3 slides to the raised side of the support frame 2, the power battery deflects as a whole.

[0039] Reference Figure 2 and Figure 3 In this embodiment, four rollers 34 are rotatably connected to the sliding platform 3. The rollers 34 abut against the support platform 2, and the sliding platform 3 is slidably connected to the support platform 2 through the rollers 34.

[0040] Reference Figure 2 The cooling component 4 is used to spray a cooling medium onto the power battery. The cooling medium is a water-based fire extinguishing agent. The cooling component 4 includes a first nozzle 5, a first nozzle 6, a second nozzle 7, and a second nozzle 8.

[0041] There are two first nozzles 5 on the vehicle body, located on both sides of the power battery. There are two sets of first nozzles 6, which are connected to the first nozzles 5 one by one. Each set of first nozzles 6 has three nozzles. There are two second nozzles 7 on the vehicle body, located at both ends of the power battery. There are two second nozzles 8, which are connected to the second nozzles 7 one by one. Both the first nozzles 6 and the second nozzles 8 are used to spray cooling medium.

[0042] In this embodiment, the first nozzle 5 is fixedly connected to two support rods 54. The two support rods 54 closer to the outer side of the vehicle body are connected to the vehicle body, and the two support rods 54 farther away from the outer side of the vehicle body are fixedly connected to the support frame 2. When the power battery deflects, the height of the first nozzle 6 is consistent with the height of the side edge of the power battery that is close to it.

[0043] The first nozzle 6 is capable of horizontal and vertical swing relative to the first nozzle 5; the first nozzle 6 has two spraying modes that can be switched between: columnar spraying and fan-shaped spraying; the spraying range of the first nozzle 6 covers the two sides of the power battery that is close to it, and the spraying range of the second nozzle 8 covers the end face of the power battery; in this embodiment, the second nozzle 8 has a conical spraying mode.

[0044] When in use, if the measured temperature of the power battery is abnormal, for example, if the measured value of the temperature sensor on the power battery is greater than 80°, the sliding platform 3 will slide towards the tilted side of the support platform 2. The tilted side of the support platform 2 will cause the sliding platform 3 to deflect, so that the power battery as a whole can be tilted, so that the side edge of the power battery is directly facing the first nozzle 6, and the second nozzle 8 is directly facing the end face of the power battery. In this state, the first nozzle 6 can cover the two sides of the power battery that it is close to by swinging horizontally and vertically. That is, the first nozzle 6 away from the outside of the vehicle body can cover one side and the top surface of the power battery, and the first nozzle 6 close to the outside of the vehicle body can cover the other side and the bottom surface of the power battery.

[0045] When only one part of the power battery experiences an abnormal temperature, and the abnormal part is on the side of the power battery, the first nozzle 6, which swings horizontally and vertically towards the abnormal temperature part, directs the spray direction of the first nozzle 6 toward the abnormal temperature part, and switches the first nozzle 6 to a columnar spray mode, so that the first nozzle 6 can spray the abnormal temperature part of the power battery with a concentrated water column, accurately and efficiently reducing the temperature of the power battery explosion-proof shell at that location.

[0046] When only one part of the power battery experiences an abnormal temperature, and the abnormal part is on the end face of the power battery, the second nozzle 8 sprays onto the end face of the power battery. Since the end face of the power battery is small, the cone-shaped spray pattern of the second nozzle 8 is sufficient to cover the entire end face of the power battery, so that the second nozzle 8 can effectively reduce the temperature of the end face of the explosion-proof shell of the power battery.

[0047] When there are multiple abnormal temperature points in the power battery, the first nozzle 6 is switched to a fan-shaped spray mode, and the first nozzle 6 is continuously oscillating horizontally so that all the first nozzles 6 and the second nozzles 8 spray. Under the action of the fan-shaped spray of the first nozzle 6 and the cone-shaped spray of the second nozzle 8, the power battery can achieve comprehensive cooling.

[0048] Based on the above analysis, when the local temperature of the power battery is abnormal, the columnar spray of the first nozzle 6 or the conical spray of the second nozzle 8 can accurately spray and cool it down. When the temperature of multiple parts of the power battery is abnormal, the fan-shaped spray of the first nozzle 6 and the conical spray of the second nozzle 8 can spray and cool it down comprehensively, thereby improving the spraying effect of the cooling medium on the explosion-proof shell.

[0049] Reference Figure 2 In order to facilitate the sliding of the sliding platform 3 relative to the support platform 2, a power cylinder 33 is provided between the sliding platform 3 and the support platform 2. The power cylinder 33 is hinged to the support platform 2, and the movable end of the power cylinder 33 is hinged to the sliding platform 3. In this embodiment, there are two power cylinders 33, which are located at both ends of the sliding platform 3 respectively. The power cylinder 33 is a pneumatic cylinder.

[0050] The power cylinder 33 can drive the sliding platform 3 to slide with the support platform 2 as support, making it easy for the sliding platform 3 to slide to the tilting side of the support platform 2; the start of the power cylinder 33 is controlled by the controller based on the detection result of the temperature sensor on the power battery, which makes the sliding platform 3 slide more timely.

[0051] Specifically, refer to Figure 4 and Figure 5 A connecting pipe 51, a rotating bend 52, and a swing block 53 are sequentially arranged between the first nozzle 5 and the first nozzle 6.

[0052] Reference Figure 5 The two ends of the connecting pipe 51 are connected to the first nozzle 5 and the rotating bend pipe 52 respectively. The rotating bend pipe 52 is rotatably connected to the connecting pipe 51 and the rotation axis is set vertically. The swing block 53 is spherical and is rotatably connected to the opening of the rotating bend pipe 52 and the rotation axis is set horizontally. The first nozzle 6 is connected to the swing block 53 and is connected to the rotating bend pipe 52.

[0053] In this embodiment, a first motor 55 is provided on the connecting pipe 51. The output shaft of the first motor 55 is connected to the rotating bend pipe 52 via a bevel gear transmission. The first motor 55 is used to drive the rotating bend pipe 52 to rotate relative to the connecting pipe 51. A first dustproof shell 511 is provided on the bevel gear transmission between the first motor 55 and the rotating bend pipe 52. The first dustproof shell 511 is fixedly connected to the connecting pipe 51 and rotatably connected to the rotating bend pipe 52. The first motor 55 is fixedly connected to the first dustproof shell 511. The first motor 55 is fixedly connected to the connecting pipe 51 through the first dustproof shell 511.

[0054] Reference Figure 4 In this embodiment, a second motor 56 is fixedly mounted on the rotating bend 52. The output shaft of the second motor 56 passes through the rotating bend 52 and is fixedly connected to the swing block 53. The second motor 56 is used to drive the swing block 53 to rotate relative to the rotating bend 52.

[0055] Reference Figure 5 and Figure 6 In this embodiment, both the connecting pipe 51 and the second spray pipe 7 are equipped with electrically controlled valves 57. The electrically controlled valves 57 are used to control the opening and closing of the connecting pipe 51 or the second spray pipe 7, so that the spraying of each first nozzle 6 and each second nozzle 8 can be controlled individually.

[0056] The first motor 55 drives the rotating bend 52 to rotate, which enables the first nozzle 6 to swing horizontally. The second motor 56 drives the swing block 53 to rotate, which enables the first nozzle 6 to swing vertically, thus enabling the first nozzle 6 to swing horizontally and vertically.

[0057] Specifically, refer to Figure 5The first nozzle 6 includes a cylindrical nozzle 61, a fan-shaped nozzle 62, and a switching element 63.

[0058] The cylindrical nozzle 61 is connected to the first nozzle 5 and has two symmetrically opened switching holes 611, which are through the wall thickness of the cylindrical nozzle 61. In this embodiment, the cylindrical nozzle 61 is fixedly installed on the swing block 53, and the cylindrical nozzle 61 is connected to the first nozzle 5 through the rotating bend 52 and the connecting pipe 51.

[0059] The fan-shaped nozzle 62 is rotatably sleeved on the cylindrical nozzle 61, and the inner wall of the fan-shaped nozzle 62 is attached to the outer wall of the cylindrical nozzle 61. The switching element 63 is disposed inside the cylindrical nozzle 61 and is used to form a spraying channel inside the cylindrical nozzle 61 that is adapted to the spraying width of the fan-shaped nozzle 62. The spraying channel, the switching hole 611 and the fan-shaped nozzle 62 work together to enable the cooling medium to be sprayed out in a complete fan shape.

[0060] In this embodiment, a third motor 622 is provided on the cylindrical nozzle 61. The third motor 622 is connected to the fan-shaped nozzle 62 by a bevel gear transmission. The third motor 622 is used to drive the fan-shaped nozzle 62 to rotate relative to the cylindrical nozzle 61. A second dustproof shell 613 is provided on the bevel gear transmission between the third motor 622 and the fan-shaped nozzle 62. The second dustproof shell 613 is fixedly connected to the cylindrical nozzle 61 and rotatably connected to the fan-shaped nozzle 62. The third motor 622 is fixedly connected to the second dustproof shell 613. The third motor 622 is fixedly connected to the cylindrical nozzle 61 through the second dustproof shell 613.

[0061] When the fan-shaped nozzle 62 is rotated to the vertical position, the fan-shaped nozzle 62 is connected to the cylindrical nozzle 61 through the switching hole 611, and the switching element 63 forms a spraying channel; when the fan-shaped nozzle 62 is rotated to the horizontal position, the fan-shaped nozzle 62 closes the switching hole 611, and the switching element 63 releases the spraying channel.

[0062] When the first nozzle 6 needs to be switched to columnar spray mode, rotate the fan-shaped nozzle 62 to a horizontal position. The fan-shaped nozzle 62 can close the switching hole 611 through its inner wall, allowing the columnar nozzle 61 to spray independently, so that the first nozzle 6 can perform columnar spray. When the first nozzle 6 needs to be switched to fan-shaped spray mode, rotate the fan-shaped nozzle 62 to a vertical position. The fan-shaped nozzle 62 is connected to the columnar nozzle 61 through the switching hole 611, and the switching element 63 forms a spray channel. Under the combined action of the spray channel, the switching hole 611, and the fan-shaped nozzle 62, the first nozzle 6 can perform fan-shaped spray.

[0063] Specifically, refer to Figure 7 The switching unit 63 includes two switching plates 631 facing each other.

[0064] The cylindrical nozzle 61 is set with the outer circle of the cross-section along the axial direction and the inner square is provided. Two switching holes 611 are opened on the two opposite inner walls of the cylindrical nozzle 61.

[0065] Both ends of the switching plate 631 are hinged with power plates 632. The switching plate 631 is connected to the inner wall of the cylindrical nozzle 61 without the switching hole 611 through the power plates 632. The power plate 632 near the spraying end of the cylindrical nozzle 61 is hinged to the inner wall of the cylindrical nozzle 61, and the power plate 632 away from the spraying end of the cylindrical nozzle 61 is slidably connected to the inner wall of the cylindrical nozzle 61.

[0066] In this embodiment, a slider 635 is hinged to the power plate 632 away from the spraying end of the cylindrical nozzle 61. The slider 635 is slidably disposed in a groove 612 opened on the inner wall of the cylindrical nozzle 61. The slider 635 and the groove 612 form a sliding connection structure between the power plate 632 and the cylindrical nozzle 61.

[0067] The sliding block 635 enables the power plate 632 to rotate relative to the switching plate 631, so that the power plate 632 can drive the switching plate 631 to move. When both switching plates 631 are close to the switching hole 611, the two switching plates 631 can form a spraying channel. When both switching plates 631 are far away from the switching hole 611, the two switching plates 631 can release the spraying channel.

[0068] Reference Figure 7 and Figure 8 To facilitate switching the first nozzle 6 to the fan-shaped spray mode, a pull rope 633 is connected to the power plate 632, which is slidably connected to the inner wall of the cylindrical nozzle 61. The pull rope 633 slides out of the side wall of the cylindrical nozzle 61, and the other end of the pull rope 633 is fixed to the fan-shaped nozzle 62. A clearance groove 621 for the pull rope 633 to move is provided on the inner wall of the fan-shaped nozzle 62. When the fan-shaped nozzle 62 is connected to the cylindrical nozzle 61, the fan-shaped nozzle 62 drives the pull rope 633 to form a spray channel with the switching plate 631.

[0069] Reference Figure 7 In this embodiment, the pull rope 633 is fixedly connected to the slider 635, and the pull rope 633 is connected to the power plate 632 through the slider 635.

[0070] When the fan-shaped nozzle 62 rotates to a vertical position, the fan-shaped nozzle 62 can drive the pull rope 633 to move, and the pull rope 633 can pull the power plate 632 to slide, so that the power plate 632 can drive the switching plate 631 to approach the switching hole 611 to form a spraying channel.

[0071] Reference Figure 7In order to facilitate switching the first nozzle 6 to the column spray mode, a torsion spring 634 is provided at the hinge of the switching plate 631 and the power plate 632. The two ends of the torsion spring 634 are fixedly connected to the switching plate 631 and the power plate 632 respectively. The torsion spring 634 is used to drive the switching plate 631 and the power plate 632 to be set in parallel.

[0072] Since the torsion spring 634 can drive the switching plate 631 and the power plate 632 to be in a parallel state, when the power plate 632 needs to drive the switching plate 631 to release the spraying channel, the external force on the power plate 632 is removed, and the elastic force of the torsion spring 634 can drive the switching plate 631 away from the switching hole 611 to release the spraying channel. In this embodiment, when the fan-shaped nozzle 62 rotates to a horizontal state, the external force applied to the power plate 632 by the pull rope 633 can be removed. Therefore, in this embodiment, when the fan-shaped nozzle 62 rotates to a horizontal state, the switching plate 631 can automatically release the spraying channel under the elastic force of the torsion spring 634.

[0073] Reference Figure 2 To improve the range of the electric trackless rubber-wheeled vehicle, two power batteries are provided. To prevent the abnormal temperature of one power battery from causing the other power battery to malfunction, two sliding platforms 3 are provided. Both sides of the support platform 2 are raised. The two sliding platforms 3 can slide onto the two raised sides of the support platform 2 respectively. The two power batteries are respectively installed on the two sliding platforms 3. Two sets of cooling components 4 are provided. The two sets of cooling components 4 spray cooling medium onto the two power batteries respectively.

[0074] When one of the power batteries experiences an abnormal temperature, both power batteries can move along the sliding platform 3 to the raised side of the support platform 2. This allows all sides of the power battery to receive the spraying of cooling medium, and also increases the distance between the two power batteries to prevent the other power battery from experiencing an abnormal temperature due to heat transfer.

[0075] Reference Figure 1 and Figure 2 In order to ensure that the first nozzle 5 can be installed within the width of the vehicle body under normal conditions and has sufficient spraying space when spraying cooling medium, the sliding platform 3 is fixedly connected to the telescopic rod 31. The movable end of the telescopic rod 31 is hinged to the connecting rod 32. The connecting rod 32 is set horizontally, and the other end of the connecting rod 32 is connected to the first nozzle 5 near the outside of the vehicle body. The connecting rod 32 is slidably connected to the vehicle body.

[0076] Reference Figure 2In this embodiment, each sliding platform 3 is provided with two telescopic rods 31 and two connecting rods 32. The connecting rods 32 correspond one-to-one with the support rods 54 near the outer side of the vehicle body. The connecting rods 32 and the support rods 54 are fixedly connected. The connecting rods 32 are fixedly connected to the first nozzle 5 through the support rods 54. The support rods 54 are slidably connected to the vehicle body through the connecting rods 32.

[0077] The sliding platform 3 can drive the first nozzle 5 near the outside of the vehicle body to move through the telescopic rod 31 and the connecting rod 32. Thus, during the process of the sliding platform 3 carrying the power battery and deflecting, the first nozzle 5 on the outside of the vehicle body can move, while the first nozzle 5 on the inside of the vehicle body will remain stationary. This allows the power battery to be separated from the first nozzles 6 on both sides, thus making it easier to leave enough spraying distance for the first nozzles 6.

[0078] Reference Figure 2 In order to facilitate the supply of cooling medium to the first nozzle 5 and the second nozzle 7, all the first nozzle 5 and all the second nozzle 7 are connected to a storage tank 9 through a hose. The storage tank is fixed to the vehicle body. The storage tank 9 is used to store the cooling medium. The storage tank 9 is connected to a pressure tank 91 through a pipeline. The pressure tank 91 contains pressurized gas and is fixed to the vehicle body.

[0079] When spraying is required, the pressure tank 91 is connected to the storage tank 9, and the pressurized gas in the pressure tank 91 can be introduced into the storage tank 9. The pressurized gas can drive the cooling medium in the storage tank 9 to flow to the first nozzle 5 and the second nozzle 7, so that the first nozzle 6 and the second nozzle 8 can easily spray the cooling medium.

[0080] The implementation principle of the power battery safety protection device for an electric trackless rubber-wheeled vehicle according to an embodiment of this application is as follows: During use, when the temperature of the power battery is abnormal, the power cylinder 33 drives the sliding platform 3 to slide onto the tilted side of the support platform 2, causing the power battery to deflect. Depending on the abnormal temperature of the power battery, the first nozzle 6 is switched to either a columnar spray mode or a fan-shaped spray mode. When only a localized temperature abnormality occurs on the side of the power battery, the first nozzle 6 is in columnar spray mode to accurately and efficiently spray the cooling medium. When multiple areas of the power battery are abnormally hot, the first nozzle 6 is in fan-shaped spray mode, and the first nozzle 6 and the second nozzle 8 work together to spray the cooling medium for full coverage. When only the end face of the power battery is abnormally hot, the second nozzle 8 can spray the entire end face of the power battery in a cone shape, so that even the smaller end face of the power battery can be sufficiently cooled, thereby improving the spraying effect of the cooling medium on the power battery.

[0081] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A power battery safety protection device of an electric trackless rubber-tyred vehicle, for being installed on a vehicle body where a power battery is located, characterized in that, The utility model relates to a battery test bench, including: Battery test bench (1) including support test bench (2) and sliding test bench (3); Support test bench (2) is connected on the car body, and the side is set up and rises, and sliding test bench (3) is set up on support test bench (2) along the direction of rising side of support test bench (2) close or far, and power battery is installed on sliding test bench (3); Cooling assembly (4) is used for spraying cooling medium to power battery, and cooling assembly (4) includes first spray pipe (5), first spray head (6), second spray pipe (7) and second spray head (8); First spray pipe (5) is provided with at least two on the car body, and is located at the both sides of power battery respectively, and first spray head (6) is provided with at least two groups, and is communicated on first spray pipe (5) one by one, and each group of first spray head (6) is provided with at least one, and second spray pipe (7) is provided with at least two on the car body, and is located at the both ends of power battery respectively, and second spray head (8) is provided with at least two, and is communicated on second spray pipe (7) one by one; Wherein, first spray head (6) can swing horizontally and vertically relative to first spray pipe (5), first spray head (6) has two spray modes of cylindrical spray and fan spray, which can be switched, the spray range of first spray head (6) on one side of power battery covers one side and top surface of power battery, the spray range of first spray head (6) on the other side of power battery covers the other side and bottom surface of power battery, and the spray range of second spray head (8) covers the end surface of power battery.

2. The power battery safety protection device of the electric trackless rubber-tyred vehicle according to claim 1, characterized in that: The utility model discloses a battery test bench, including:

3. The power battery safety protection device of the electric trackless rubber-tyred vehicle according to claim 1, characterized in that: Battery test bench (1) including support test bench (2) and sliding test bench (3); Support test bench (2) is connected on the car body, and the side is set up and rises, and sliding test bench (3) is set up on support test bench (2) along the direction of rising side of support test bench (2) close or far, and power battery is installed on sliding test bench (3); Cooling assembly (4) is used for spraying cooling medium to power battery, and cooling assembly (4) includes first spray pipe (5), first spray head (6), second spray pipe (7) and second spray head (8); First spray pipe (5) is provided with at least two on the car body, and is located at the both sides of power battery respectively, and first spray head (6) is provided with at least two groups, and is communicated on first spray pipe (5) one by one, and each group of first spray head (6) is provided with at least one, and second spray pipe (7) is provided with at least two on the car body, and is located at the both ends of power battery respectively, and second spray head (8) is provided with at least two, and is communicated on second spray pipe (7) one by one; Wherein, first spray head (6) can swing horizontally and vertically relative to first spray pipe (5), first spray head (6) has two spray modes of cylindrical spray and fan spray, which can be switched, the spray range of first spray head (6) on one side of power battery covers one side and top surface of power battery, the spray range of first spray head (6) on the other side of power battery covers the other side and bottom surface of power battery, and the spray range of second spray head (8) covers the end surface of power battery. The utility model discloses a battery test bench, including: Battery test bench (1) including support test bench (2) and sliding test bench (3); Support test bench (2) is connected on the car body, and the side is set up and rises, and sliding test bench (3) is set up on support test bench (2) along the direction of rising side of support test bench (2) close or far, and power battery is installed on sliding test bench (3); Cooling assembly (4) is used for spraying cooling medium to power battery, and cooling assembly (4) includes first spray pipe (5), first spray head (6), second spray pipe (7) and second spray head (8); First spray pipe (5) is provided with at least two on the car body, and is located at the both sides of power battery respectively, and first spray head (6) is provided with at least two groups, and is communicated on first spray pipe (5) one by one, and each group of first spray head (6) is provided with at least one, and second spray pipe (7) is provided with at least two on the car body, and is located at the both ends of power battery respectively, and second spray head (8) is provided with at least two, and is communicated on second spray pipe (7) one by one; Wherein, first spray head (6) can swing horizontally and vertically relative to first spray pipe (5), first spray head (6) has two spray modes of cylindrical spray and fan spray, which can be switched, the spray range of first spray head (6) on one side of power battery covers one side and top surface of power battery, the spray range of first spray head (6) on the other side of power battery covers the other side and bottom surface of power battery, and the spray range of second spray head (8) covers the end surface of power battery.

4. The power battery safety protection device of the electric trackless rubber-tyred vehicle according to claim 3, characterized in that: The cylindrical nozzle (61) is provided with two switching holes (611) on the two opposite inner walls of the cylindrical nozzle (61), the switching member (63) comprises two switching plates (631) arranged opposite to each other, and the two ends of the switching plate (631) are hinged with power plates (632), the switching plate (631) is connected to the inner wall of the cylindrical nozzle (61) which is not provided with the switching hole (611) through the power plate (632), the power plate (632) close to the spraying end of the cylindrical nozzle (61) is hinged to the inner wall of the cylindrical nozzle (61), and the power plate (632) away from the spraying end of the cylindrical nozzle (61) is slidingly connected to the inner wall of the cylindrical nozzle (61).

5. The power battery safety protection device of the electric trackless rubber-tyred vehicle according to claim 4, characterized in that: The power plate (632) slidingly connected to the inner wall of the cylindrical nozzle (61) is connected with a pull rope (633), the pull rope (633) slidingly penetrates the side wall of the cylindrical nozzle (61), and the other end of the pull rope (633) is connected to the fan-shaped nozzle (62), the inner wall of the fan-shaped nozzle (62) is provided with a gap slot (621) for the movement of the pull rope (633), when the fan-shaped nozzle (62) communicates with the cylindrical nozzle (61), the fan-shaped nozzle (62) drives the pull rope (633) to form a spraying channel.

6. The power battery safety protection device of the electric trackless rubber-tyred vehicle according to claim 4, characterized in that: The hinged part of the switching plate (631) and the power plate (632) is provided with a torsion spring (634), and the torsion spring (634) is used to drive the switching plate (631) and the power plate (632) to be arranged in parallel.

7. The power battery safety protection device of the electric trackless rubber-tyred vehicle according to claim 1, characterized in that: The sliding rack (3) is provided with two, and the two sides of the supporting rack (2) are provided with two, and the two sliding racks (3) can slide to the two sides of the supporting rack (2), respectively, and the power battery is provided with two, and is installed on the two sliding racks (3), respectively, and the cooling assembly (4) is provided with two groups, and sprays cooling medium to the two power batteries, respectively.

8. The power battery safety protection device of the electric trackless rubber-tyred vehicle according to claim 1, characterized in that: The sliding rack (3) is connected with a telescopic rod (31), the movable end of the telescopic rod (31) is hinged with a connecting rod (32), the connecting rod (32) is connected with the first spray pipe (5) close to the outer side of the vehicle body, and the connecting rod (32) is slidingly connected with the vehicle body.

9. The power battery safety protection device of the electric trackless rubber-tyred vehicle according to claim 1, characterized in that: All the first spray pipes (5) and all the second spray pipes (7) are in communication with a storage tank (9), the storage tank (9) is used for storing cooling medium, and the storage tank (9) is in communication with a pressure tank (91) containing pressurized gas.

10. The power battery safety protection device of the electric trackless rubber-tyred vehicle according to claim 1, characterized in that: The sliding rack (3) and the supporting rack (2) are hinged with a power cylinder (33).

Images