A battery thermal management device and method

Abstract

The present invention relates to the field of battery thermal management technology, and in particular to a battery thermal management device and method for battery replacement. It includes a heat dissipation shell, a cover is detachably installed on the top of the heat dissipation shell, the heat dissipation shell is respectively fixedly connected and connected with a liquid inlet pipe and a liquid outlet pipe, the heat dissipation shell is fixedly connected with a first motor, the output shaft of the first motor is fixedly connected with a gear, the heat dissipation shell is rotatably connected with a gear ring meshing with the gear, the gear ring is fixedly connected with an extrusion block, the inner wall of the heat dissipation shell is fixedly connected with an inner cylinder, the inner cylinder is slidably connected with a push rod, the push rod is fixedly connected with a trigger rod, a through hole is provided on the push rod, a first one-way valve is provided in the through hole, and a second one-way valve is provided in the inner cylinder. The present invention draws the coolant on the outside of the heat dissipation shell into the inner cylinder through the push rod, and injects it around the battery, so as to prevent the coolant on the outside of the heat dissipation shell from contacting the battery, resulting in the coolant not being fully utilized.

Description

Technical Field

[0001] The present invention complies with the technical field of battery thermal management, and in particular, is a battery thermal management device and method for battery replacement. Background Art

[0002] The main power source of the tram during driving comes from its own swappable battery, but the battery will generate heat during use, causing the internal temperature to rise. Therefore, the battery needs to be cooled. Otherwise, the excessive temperature will cause the internal temperature to rise and produce high-pressure gas, and even cause an explosion. Therefore, the heat dissipation of the battery is crucial to the safe operation of the battery system and extending the battery life. The existing battery heat dissipation technologies are diverse, mainly divided into air cooling, liquid cooling and heat sink cooling, among which liquid cooling is widely used in battery heat dissipation due to its advantages of high-efficiency heat dissipation, low noise and large space interest rate. Most of the existing battery liquid cooling methods immerse the battery in coolant, so that the coolant circulates to absorb the heat in the battery. Since the liquid inlet and outlet are fixed, the coolant is very likely to have a flow dead angle when flowing, and cannot fully contact the battery, resulting in the coolant far away from the battery unable to absorb the heat inside the battery, resulting in the coolant cannot be fully utilized. Summary of the invention

[0003] In order to overcome the shortcomings mentioned in the above background technology, the present invention provides a battery thermal management device and method for battery replacement.

[0004] Technical solution: A battery replacement thermal management device, comprising a heat dissipation shell, a cover detachably mounted on the top of the heat dissipation shell, the upper and lower parts of the heat dissipation shell are respectively fixedly connected and connected with a liquid inlet pipe and a liquid outlet pipe, the outside of the heat dissipation shell is fixedly connected with a first motor, the output shaft of the first motor is fixedly connected with a gear, the outside of the heat dissipation shell is rotatably connected with a gear ring meshing with the gear, the inner side of the gear ring is fixedly connected with an annular array of extrusion blocks, the inner wall of the heat dissipation shell is fixedly connected with a straight line and annular array of inner cylinders, both ends of the inner cylinder are connected with the heat dissipation shell, the straight line and annular array of inner cylinders The inner cylinders are all slidably connected with push rods, the push rods penetrate the heat dissipation shell and the two are slidably connected to each other, the push rods of adjacent linear arrays are commonly fixed with a trigger rod, the extrusion blocks of the annular array are extruded and matched with the trigger rods of the annular array, a first elastic element is arranged between the push rod and the heat dissipation shell, a through hole is arranged on the push rod, a first one-way valve is arranged in the through hole, a through hole is arranged at the inner wall of the inner cylinder close to the heat dissipation shell, a second one-way valve is arranged in the through hole, and a fixing component for fixing the battery is arranged inside the heat dissipation shell.

[0005] As a further preferred solution, the extrusion block is an isosceles triangle, and the bottom of the extrusion block is in contact with the inner wall of the gear ring.

[0006] As a further preferred scheme, the fixing assembly includes a second motor, the second motor is fixedly connected to the bottom of the heat dissipation shell, a fixed disk is fixedly connected inside the heat dissipation shell, the output shaft of the second motor is rotatably connected to the heat dissipation shell, the output shaft of the second motor is rotatably connected to the fixed disk, the output shaft of the second motor is fixedly connected to a rotating disk located in the heat dissipation shell, the rotating disk is slidably connected to a ring-shaped array of fixing claws, a slide groove is provided on the fixed disk, and the fixing claws of the ring-shaped array are all slidably connected to the slide groove.

[0007] As a further preferred solution, the slide groove is formed by alternating arc grooves in an annular array and V-shaped grooves in an annular array and connected end to end, the center of the arc groove is the same as the center of the fixed disk, the opening of the V-shaped groove faces the center of the fixed disk, and the axis of symmetry of the V-shaped groove coincides with the radius of the fixed disk.

[0008] As a further preferred scheme, it also includes a shock-absorbing assembly for preventing leakage of the internal medium of the heat dissipation shell, the shock-absorbing assembly is arranged at the bottom of the heat dissipation shell, the shock-absorbing assembly includes a first piston shaft in an annular array, the first piston shafts of the annular array are all fixedly connected to the bottom of the heat dissipation shell, the bottom of the heat dissipation shell is slidably connected with a mounting cylinder of an annular array, the mounting cylinders of the annular array are respectively slidably connected to adjacent first piston shafts, a second elastic element is arranged between the mounting cylinders of the annular array and the heat dissipation shell, the cover is provided with a sealing assembly for increasing its own sealing strength to the heat dissipation shell, and the mounting cylinders of the annular array are provided with a shock-absorbing assembly for further mitigating the vibration force.

[0009] As a further preferred embodiment, the sealing assembly includes a connecting ring, which is fixedly connected to and connected to the mounting tube of the annular array, an inner cavity is arranged inside the sealing cover, a connecting tube is fixedly connected between the connecting ring and the sealing cover, both ends of the connecting tube are respectively connected to the connecting ring and the inner cavity, a sealing ring is arranged on the sealing cover, a cavity is arranged in the sealing ring, the sealing cover is fixedly connected to a docking tube of the annular array, the docking tubes of the annular array are all connected to the inner cavity in the sealing cover, the docking tubes of the annular array are all connected to the cavity in the sealing ring, and a delay assembly is arranged in the sealing cover for maintaining the sealing strength of the sealing ring to the heat dissipation shell.

[0010] As a further preferred scheme, the shock-absorbing assembly includes a sliding rod, which is slidably connected to the interior of the mounting tube, and the sliding rod is fixed with a sealing block, and the sealing block is sealingly matched with the adjacent mounting tube, and a third elastic element is arranged between the sealing block and the adjacent mounting tube, and an extrusion plate is fixedly connected to the interior of the first piston shaft, and the extrusion plate is extruded and matched with the adjacent sliding rod.

[0011] As a further preferred solution, the extruded plate is a right-angled triangular plate, the short right-angled side of the extruded plate faces the heat dissipation shell, and the long right-angled side of the extruded plate faces the center of the connecting ring.

[0012] As a further preferred embodiment, the delay assembly includes a second piston shaft, which is slidably connected in the sealing cover, a fourth elastic element is arranged between the second piston shaft and the sealing cover, a serrated rod is fixedly connected to the second piston shaft, the sealing cover is slidably connected with a clamping block in the inner cavity, a fifth elastic element is arranged between the clamping block and the sealing cover, and the serrated rod is squeezed into fit with the clamping block.

[0013] As a further preferred solution, a battery thermal management method for battery replacement, using the above-mentioned battery thermal management device, includes the following steps:

[0014] Step S1: when the battery is running, the first motor is turned on, and the output shaft of the first motor drives the extrusion block of the annular array to rotate through the gear and the gear ring, and the extrusion block rotates and squeezes the trigger rod, so that the trigger rod drives the push rod of the linear array on it to extract the coolant outside the heat dissipation shell into the adjacent inner cylinder, and then inject it around the battery, and the cycle continues;

[0015] Step S2: when the battery is running, the second motor is turned on, and the output shaft of the second motor drives the fixing claws of the annular array to rotate through the rotating disk, and the fixing claws of the annular array rotate and slide along the sliding groove, so that the fixing claws of the annular array alternately fix the battery;

[0016] Step S3: When the vehicle travels to a bumpy road section, the bump force drives the first piston shaft on the heat sink shell to slide along the adjacent mounting cylinder, the second elastic element is compressed to offset the bump, and the first piston shaft simultaneously pushes the hydraulic oil in the mounting cylinder, causing the hydraulic oil to push the second piston shaft, and the second piston shaft drives the gas in the inner cavity to enter the cavity in the sealing ring, causing the sealing ring to expand and further fit the heat sink shell;

[0017] Step S4: when the first piston shaft slides along the adjacent mounting cylinder, the extrusion plate squeezes the adjacent sliding rod, so that the sliding rod drives the blocking block on it to reduce the flow aperture of the adjacent mounting cylinder to form a damping force;

[0018] Step S5: When the second piston shaft is pushed by the hydraulic oil, the second piston shaft drives the sawtooth rod thereon to move synchronously, the fourth elastic element is compressed, the sawtooth rod squeezes the block, and the block applies resistance to the sawtooth rod, thereby extending the reset time of the second piston shaft.

[0019] Compared with the prior art, the present invention has the following advantages: 1. The coolant on the outside of the heat dissipation shell is drawn into the inner cylinder through the push rod, and then the coolant on the outside is injected into the inside of the heat dissipation shell, that is, around the battery, to avoid the coolant on the outside of the heat dissipation shell being unable to absorb the heat of the battery during circulation, resulting in the coolant not being fully utilized.

[0020] 2. By constantly replacing the fixing claws that fix the battery, the outside of the battery can evenly exchange heat with the coolant, avoiding the situation where the fixing claws fix the battery unchanged, cutting off the heat exchange between the local battery and the coolant, and reducing the heat dissipation efficiency of the battery.

[0021] 3. When the vehicle is traveling on a bumpy road, the gas in the inner cavity enters the sealing ring, causing it to expand and further fit the heat sink shell, thereby increasing the sealing strength of the sealing ring on the heat sink shell and preventing the coolant in the heat sink shell from leaking due to bumps.

[0022] 4. Increase the resistance of the second piston shaft during reset by using the block, extend the reset time of the second piston shaft, maintain the sealing strength of the sealing ring on the heat sink shell, and avoid the coolant inside the heat sink shell being in a shaking state after the bump disappears, which may still cause leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0024] Figure 2 It is a schematic cross-sectional view of the three-dimensional structure of the heat dissipation shell of the present invention;

[0025] Figure 3 It is a schematic diagram of the three-dimensional structure of the extrusion block of the present invention;

[0026] Figure 4 It is a schematic cross-sectional view of the three-dimensional structure of the inner cylinder of the present invention;

[0027] Figure 5 It is a three-dimensional structural schematic diagram of the fixed disk and the rotating disk of the present invention;

[0028] Figure 6 It is a three-dimensional structural schematic diagram of the slideway of the present invention;

[0029] Figure 7 It is a schematic cross-sectional view of the three-dimensional structure of the heat dissipation shell and the cover of the present invention;

[0030] Figure 8 It is a schematic cross-sectional view of the three-dimensional structure of the mounting tube of the present invention;

[0031] Fig. 9 It is a schematic cross-sectional view of the three-dimensional structure of the cover of the present invention;

[0032] Fig.10 It is a schematic diagram of the three-dimensional structure of the extruded plate of the present invention;

[0033] Fig.11 It is a schematic diagram of the three-dimensional structure of the sawtooth rod of the present invention.

[0034] In the figure: 1, heat dissipation shell, 2, cover, 3, liquid inlet pipe, 4, liquid outlet pipe, 5, first motor, 6, gear, 7, gear ring, 8, extrusion block, 9, inner cylinder, 10, injection rod, 11, trigger rod, 12, first elastic element, 13, first one-way valve, 14, second one-way valve, 201, second motor, 202, fixed disk, 203, rotating disk, 204, fixed claw, 205, slide groove, 301, first Piston shaft, 302, mounting cylinder, 303, second elastic element, 304, connecting ring, 305, inner cavity, 306, connecting tube, 307, sealing ring, 308, docking tube, 401, sliding rod, 402, blocking block, 403, third elastic element, 404, extrusion plate, 501, second piston shaft, 502, serrated rod, 503, fourth elastic element, 504, blocking block, 505, fifth elastic element. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0036] Most existing battery liquid cooling methods immerse the battery in coolant, allowing the coolant to circulate and absorb the heat in the battery. This method causes the coolant far away from the battery to be unable to absorb the heat inside the battery, resulting in the coolant not being fully utilized.

[0037] Embodiment 1: A battery thermal management device, such as Figure 1-Figure 4As shown, it includes a heat dissipation shell 1, a battery is placed in the heat dissipation shell 1, and a coolant is accumulated in the heat dissipation shell 1. A cover 2 is detachably installed on the top of the heat dissipation shell 1 for replacing the battery. The upper and lower parts of the heat dissipation shell 1 are respectively fixedly connected and connected with a liquid inlet pipe 3 and a liquid outlet pipe 4. The liquid inlet pipe 3 and the liquid outlet pipe 4 are respectively connected with an external coolant circulation device for dissipating the heat in the coolant after absorbing the heat. A first motor 5 is fixedly connected to the right side of the outside of the heat dissipation shell 1, and a gear 6 is fixedly connected to the output shaft of the first motor 5. A gear ring 7 is rotatably connected to the bottom of the outer side of the heat dissipation shell 1, and the gear 6 and the gear ring 7 are connected to each other. The inner side of the gear ring 7 is meshed, and eight extrusion blocks 8 of the annular array are fixedly connected. The output shaft of the first motor 5 drives the eight extrusion blocks 8 of the annular array to rotate through the gear 6 and the gear ring 7. The extrusion block 8 is an isosceles triangle. The bottom of the extrusion block 8 fits the inner wall of the gear ring 7. The inner wall of the heat dissipation shell 1 is fixedly connected with twelve inner cylinders 9 of a straight line and annular array. Both ends of the inner cylinder 9 (one end close to the central axis of the heat dissipation shell 1 and the end close to the inner wall of the heat dissipation shell 1) are connected to the heat dissipation shell 1. The interiors of the twelve inner cylinders 9 of the straight line and annular array are all slidably connected with push rods 10, and the push rods 10 penetrate the heat dissipation shell 1. The shell 1 is slidably connected to each other, the three push rods 10 of the adjacent linear array are fixedly connected with a trigger rod 11, and the trigger rod 11 is located outside the heat dissipation shell 1. The eight extrusion blocks 8 of the annular array are extruded and matched with the four trigger rods 11 of the annular array. The waist of the extrusion block 8 squeezes the trigger rod 11, so that the trigger rod 11 drives the three push rods 10 of the linear array thereon to move linearly. A first elastic element 12 is arranged between the push rod 10 and the heat dissipation shell 1. The first elastic element 12 is a tension spring used to drive the adjacent push rods 10 to reset. Two mirror-distributed push rods 11 are arranged on the push rod 10. A through hole is provided in which a first one-way valve 13 is arranged. The first one-way valve 13 is used to allow the medium in the inner cylinder 9 to enter the middle part of the heat dissipation shell 1. The inner cylinder 9 is provided with two through holes distributed in mirror image near the inner wall of the heat dissipation shell 1. The through hole is provided with a second one-way valve 14. The second one-way valve 14 is used to allow the medium inside and outside the heat dissipation shell 1 to enter the inner cylinder 9. The interior of the heat dissipation shell 1 is provided with a fixing component for fixing the battery. The coolant on the outside of the heat dissipation shell 1 is drawn into the inner cylinder 9 by the push rod 10, and then injected around the battery, so that the coolant is in uniform contact with the battery, thereby improving the utilization rate of the coolant.

[0038] like Figure 2 , Figure 5 and Figure 6As shown, the fixing assembly includes a second motor 201, the second motor 201 is fixedly connected to the bottom of the heat dissipation shell 1, a fixing plate 202 is fixedly connected to the bottom of the inner side of the heat dissipation shell 1, the output shaft of the second motor 201 is rotatably connected to the heat dissipation shell 1, the output shaft of the second motor 201 is rotatably connected to the fixing plate 202, the output shaft of the second motor 201 is fixedly connected to a rotating plate 203 located in the heat dissipation shell 1, the rotating plate 203 is located above the fixing plate 202, the rotating plate 203 is slidably connected to six fixing claws 204 in an annular array, the six fixing claws 204 in the annular array are divided into two groups in an alternating distribution manner (i.e., three fixing claws 204 initially located on the inner side and three fixing claws 204 located on the outer side), the upper plane of the fixing plate 202 is provided with a slide groove 205, the slide groove 205 It is composed of three arc grooves of an annular array and three V-shaped grooves of an annular array, which are alternately distributed and connected end to end. In the initial state, the three fixing claws 204 located on the inside are respectively located in the middle of adjacent arc grooves, the center of the arc groove is the same as the center of the fixing disk 202, the opening of the V-shaped groove faces the center of the fixing disk 202, and the symmetry axis of the V-shaped groove coincides with the radius of the fixing disk 202. The three fixing claws 204 on the outside are located at the sharp points of adjacent V-shaped grooves. The six fixing claws 204 of the annular array are all slidably connected to the slide groove 205. By continuously replacing the fixing claws 204 that fix the battery, the outside of the battery is evenly heat-exchanged with the coolant, avoiding the fixing claws 204 on the battery always remaining unchanged, cutting off the heat exchange between the local battery and the coolant, and reducing the heat dissipation efficiency of the battery.

[0039] The staff opens the cover 2 and places the replacement battery inside the heat dissipation shell 1. At this time, three of the six fixed claws 204 of the circular array are located in the middle of the rotating disk 203. The staff places the battery on the three fixed claws 204 and then closes the cover 2. At this time, the battery replacement is completed. During the driving of the vehicle, the staff turns on the external coolant circulation device to allow the coolant to enter the heat dissipation shell 1 from the liquid inlet pipe 3, and then flow along the liquid outlet pipe 4 to the external cooling device. In this way, the coolant absorbs the heat generated by the battery during operation. When the battery starts to run, the first motor 5 is turned on, and the output shaft of the first motor 5 drives the gear 6 thereon to rotate, and the gear 6 drives the gear ring 7 to rotate, and the gear ring 7 drives the extrusion block 8 of the inner circular array to rotate, and the extrusion block 8 rotates to squeeze the adjacent trigger rod 11, and the trigger rod 11 is driven by the extrusion force to drive the three injection rods 10 in the linear array thereon The first elastic element 12 is stretched and the coolant on the outside of the heat dissipation shell 1 is drawn into the inner cylinder 9 by the two second one-way valves 14 until the trigger rod 11 slides to the sharp point of the extrusion block 8. Then the first elastic element 12 is reset and pulls the adjacent push rod 10 to reset synchronously. At this time, the coolant in the adjacent inner cylinder 9 enters the other side of the push rod 10 along the two first one-way valves 13 distributed in a mirror image thereon. When the trigger rod 11 contacts the extrusion block 8 again, the push rod 10 pushes the coolant in the inner cylinder 9 to the surrounding area of ​​the battery, so that the coolant is evenly in contact with the battery. In this way, the coolant on the outside of the heat dissipation shell 1 is drawn into the inner cylinder 9 by the push rod 10 and pushed to the periphery of the battery, so as to avoid the coolant on the outside of the heat dissipation shell 1 from being unable to absorb the heat of the battery during circulation, resulting in the coolant not being fully utilized.

[0040] When the battery starts to run, the second motor 201 is turned on, and the output shaft of the second motor 201 drives the rotating disk 203 thereon to rotate, and the rotating disk 203 drives the six fixed claws 204 of the circular array thereon to rotate synchronously, and the fixed claws 204 rotate and slide along the slide groove 205. At this time, the three fixed claws 204 located on the inner side of the rotating disk 203 slide from the middle of the adjacent arc groove to the adjacent V-shaped groove to continue to fix the battery. At the same time, the three fixed claws 204 located on the outer side of the rotating disk 203 slide from the sharp part of the V-shaped groove to the adjacent arc groove to contact the battery. At this time, the circular array The six fixing claws 204 are all located on the inner side of the rotating disk 203 and all fix the battery. The output shaft of the second motor 201 continues to drive the rotating disk 203 to rotate. At this time, the three fixing claws 204 initially located on the inner side slide along the V-shaped groove to their sharp points and separate from the battery. The three fixing claws 204 initially located on the outer side slide along the arc groove to the middle thereof and continue to fix the battery. This cycle is repeated. By continuously replacing the fixing claws 204 that fix the battery, the outside of the battery is evenly heat-exchanged with the coolant, and the outer wall of the battery is evenly in contact with the coolant, thereby improving the heat dissipation efficiency of the battery.

[0041] This cycle is repeated until the battery stops running, and then the external coolant circulation device, the first motor 5 and the second motor 201 are turned off. When the battery starts running again, the above steps are repeated.

[0042] Embodiment 2: Based on embodiment 1, Figure 7 and Figure 8 As shown, it also includes a shock-absorbing component for preventing the coolant inside the heat dissipation shell 1 from leaking. The shock-absorbing component is arranged at the bottom of the heat dissipation shell 1. The shock-absorbing component includes four first piston shafts 301 in an annular array. The four first piston shafts 301 in the annular array are all fixedly connected to the bottom of the heat dissipation shell 1. The bottom of the heat dissipation shell 1 is slidably connected with four mounting cylinders 302 in an annular array. The mounting cylinders 302 are initially installed on the vehicle. The four mounting cylinders 302 in the annular array are respectively slidably connected to the adjacent first piston shafts 301. A second elastic element 303 is arranged between the four mounting cylinders 302 in the annular array and the heat dissipation shell 1. The second elastic element 303 is a spring. The second elastic element 303 is used to drive the adjacent first piston shafts 301 to reset. The second elastic element 303 is compressed to absorb part of the bumpy force during the driving of the vehicle. The cover 2 is provided with a sealing component for increasing its own sealing strength to the heat dissipation shell 1. The four mounting cylinders 302 in the annular array are each provided with a shock-absorbing component for further mitigating the vibration force.

[0043] like Fig. 9 As shown, the sealing assembly includes a connecting ring 304, which is fixedly connected to and communicated with four mounting cylinders 302 in an annular array. An inner cavity 305 is provided inside the sealing cover 2. A connecting pipe 306 is fixedly connected between the connecting ring 304 and the sealing cover 2. The connecting pipe 306 is a flexible pipe for adapting to the opening and closing of the sealing cover 2. The two ends of the connecting pipe 306 are respectively connected with the connecting ring 304 and the inner cavity 305. A sealing ring 307 is provided on the sealing cover 2. A cavity is provided in the sealing ring 307. Six butt joints 308 in an annular array are fixedly connected, and the six butt joints 308 in an annular array are all communicated with the inner cavity 305 in the cover 2, and the six butt joints 308 in an annular array are all communicated with the inner cavity of the sealing ring 307. A delay component for maintaining the sealing strength of the sealing ring 307 to the heat dissipation shell 1 is arranged in the cover 2, and the gas in the inner cavity 305 is pressed into the cavity of the sealing ring 307 to expand and fit the heat dissipation shell 1, thereby further increasing the sealing strength of the sealing ring 307 to the heat dissipation shell 1.

[0044] like Fig.10As shown, the shock-absorbing assembly includes a sliding rod 401, which is slidably connected to the inside of the mounting tube 302. The sliding rod 401 is fixed with a blocking block 402, which is truncated. The blocking block 402 is a truncated cone, and the end of the blocking block 402 with a small diameter is close to the connecting ring 304. The blocking block 402 is blocked and matched with the adjacent mounting tube 302. A third elastic element 403 is provided between the blocking block 402 and the adjacent mounting tube 302. The third elastic element 403 is a tension spring, which is used to drive the adjacent sliding rod 401 to reset. The first An extrusion plate 404 is fixedly connected to the inside of the piston shaft 301. The extrusion plate 404 is a right-angled triangle plate. The short right-angled side of the extrusion plate 404 faces the heat dissipation shell 1, and the long right-angled side of the extrusion plate 404 faces the center of the connecting ring 304. The extrusion plate 404 is extruded and matched with the adjacent sliding rod 401. The hypotenuse of the extrusion plate 404 squeezes the adjacent sliding rod 401, so that the sliding rod 401 drives the adjacent blocking block 402 to move synchronously, reducing the flow aperture of the mounting cylinder 302, forming a damping force to further reduce the bumping force of the heat dissipation shell 1.

[0045] like Fig.11 As shown, the delay assembly includes a second piston shaft 501, four first piston shafts 301 in an annular array, four mounting cylinders 302 in an annular array, a connecting ring 304, a connecting pipe 306, a cover 2, and a second piston shaft 501 cooperate to form a closed cavity, and the closed cavity is filled with hydraulic oil, the second piston shaft 501 is slidably connected to the cover 2, and a fourth elastic element 503 is provided between the second piston shaft 501 and the cover 2, the fourth elastic element 503 is a spring, and the fourth elastic element 503 is used to drive the second piston The shaft 501 is reset, the second piston shaft 501 is fixedly connected with a sawtooth rod 502, the cover 2 is slidably connected with a block 504 in the inner cavity 305, a fifth elastic element 505 is arranged between the block 504 and the cover 2, the fifth elastic element 505 is a spring, and the fifth elastic element 505 is used to drive the block 504 to reset, the sawtooth rod 502 is squeezed and matched with the block 504, and resistance is applied to the sawtooth rod 502 through the block 504, so as to extend the reset time of the second piston shaft 501 and maintain the sealing strength of the sealing ring 307 to the heat dissipation shell 1.

[0046] When the staff installs the device on the vehicle, they install the four mounting cylinders 302 of the annular array on the vehicle. When the vehicle travels on a bumpy road section, the bump force drives the heat sink 1 to move downward, and the heat sink 1 drives the four first piston shafts 301 of the bottom annular array to slide along the adjacent mounting cylinders 302 respectively. At this time, the second elastic element 303 of the annular array is compressed, and part of the bump force is absorbed by the second elastic element 303 to prevent the heat sink 1 from bumping too much, causing the coolant inside it to leak. At the same time, the first piston shaft 301 pushes the hydraulic oil in the mounting cylinder 302 into the connecting ring 304, and then enters the inner part of the cover 2 along the connecting pipe 306. In the cavity 305, the hydraulic oil pushes the second piston shaft 501, and the second piston shaft 501 slides downward along the cover 2. At this time, the second piston shaft 501 slides downward, and the fourth elastic element 503 is compressed. The second piston shaft 501 slides downward and pushes the gas in the inner cavity 305 along the butt joint 308 of the annular array into the cavity of the sealing ring 307, so that the sealing ring 307 expands and further fits the heat dissipation shell 1, thereby increasing the sealing strength of the sealing ring 307 to the heat dissipation shell 1, and preventing the coolant in the heat dissipation shell 1 from leaking due to bumps, until the bumps disappear, at which time the second elastic element 303 drives the adjacent first piston shaft 301 to reset, thereby resetting the heat dissipation shell 1.

[0047] When the second piston shaft 501 slides downward, the second piston shaft 501 drives the serrated rod 502 thereon to slide downward synchronously, and the serrated rod 502 squeezes the block 504 downward. The block 504 slides along the cover 2 under the squeezing force, and the fifth elastic element 505 is compressed at the same time, until the second piston shaft 501 stops sliding downward. At this time, the fifth elastic element 505 resets and pushes the block 504 to contact the serrated rod 502. When the bump disappears, the fourth elastic element 503 resets and pushes the second piston shaft 501 to reset synchronously. At this time, the second piston shaft 501 drives the bottom serrated rod 502 to squeeze the block 504, so that the block 504 performs a linear reciprocating motion, so that the fifth elastic element 505 is continuously compressed and reset, and the resistance of the second piston shaft 501 when resetting is increased by the block 504, and the resetting time of the second piston shaft 501 is delayed, so as to maintain the sealing strength of the sealing ring 307 to the heat dissipation shell 1, so as to avoid the coolant inside the heat dissipation shell 1 being in a shaking state after the bump disappears, and there is still a probability of leakage.

[0048] When the first piston shaft 301 slides downward along the adjacent mounting cylinder 302 due to the bumping force, the first piston shaft 301 drives the extrusion plate 404 inside it to slide downward synchronously, and the extrusion plate 404 squeezes the adjacent sliding rod 401. The sliding rod 401 slides along the adjacent mounting cylinder 302 due to the extrusion force. At this time, the third elastic element 403 is stretched, and the sliding rod 401 drives the blocking block 402 thereon to move and reduce the hydraulic oil flow aperture of the mounting cylinder 302, thereby forming a damping force, further reducing the bumping amplitude of the heat sink shell 1 and avoiding leakage of the coolant inside the heat sink shell 1. This is done until the bumping force disappears, and the third elastic element 403 is reset to drive the adjacent sliding rod 401 to reset. When the vehicle drives to the bumpy section again, the above steps are repeated.

[0049] Embodiment 3: Based on embodiment 2, Figure 1-Figure 11 As shown, a battery thermal management method for battery replacement, using the above-mentioned battery thermal management device, includes the following steps:

[0050] Step S1: when the battery is running, the first motor 5 is turned on, and the output shaft of the first motor 5 drives the extrusion block 8 of the annular array to rotate through the gear 6 and the gear ring 7, and the extrusion block 8 rotates and squeezes the trigger rod 11, so that the trigger rod 11 drives the push rod 10 of the linear array thereon to extract the coolant on the outside of the heat dissipation shell 1 into the adjacent inner cylinder 9, and then injects it around the battery, and the cycle continues;

[0051] Step S2: When the battery is running, the second motor 201 is turned on, and the output shaft of the second motor 201 drives the annular array of fixed claws 204 to rotate through the rotating disk 203. The annular array of fixed claws 204 rotates and slides along the slide groove 205, so that the annular array of fixed claws 204 alternately fixes the battery;

[0052] Step S3: When the vehicle travels to a bumpy road section, the bump force drives the first piston shaft 301 on the heat dissipation shell 1 to slide along the adjacent mounting cylinder 302, and the second elastic element 303 is compressed to offset the bump. The first piston shaft 301 simultaneously pushes the hydraulic oil in the mounting cylinder 302, so that the hydraulic oil pushes the second piston shaft 501. The second piston shaft 501 drives the gas in the inner cavity 305 to enter the cavity in the sealing ring 307, so that the sealing ring 307 expands and further fits the heat dissipation shell 1.

[0053] Step S4: When the first piston shaft 301 slides along the adjacent mounting cylinder 302, the extrusion plate 404 squeezes the adjacent sliding rod 401, so that the sliding rod 401 drives the blocking block 402 thereon to reduce the flow aperture of the adjacent mounting cylinder 302 to form a damping force;

[0054] Step S5: When the second piston shaft 501 is pushed by the hydraulic oil, the second piston shaft 501 drives the serrated rod 502 thereon to move synchronously, the fourth elastic element 503 is compressed, the serrated rod 502 squeezes the block 504, and the block 504 applies resistance to the serrated rod 502, thereby extending the reset time of the second piston shaft 501.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery heat management device for battery replacement, comprising a heat dissipation shell (1), a cover (2) being detachably mounted on the top of the heat dissipation shell (1), a liquid inlet pipe (3) and a liquid outlet pipe (4) being fixedly connected and communicated with the upper and lower parts of the heat dissipation shell (1), a first motor (5) being fixedly connected to the outside of the heat dissipation shell (1), a gear (6) being fixedly connected to the output shaft of the first motor (5), a gear ring (7) being rotatably connected to the outside of the heat dissipation shell (1) and meshing with the gear (6), a ring array of extrusion blocks (8) being fixedly connected to the inner side of the gear ring (7), wherein: It also includes inner cylinders (9) in a linear and annular array, the inner cylinders (9) being fixedly connected to the inner wall of the heat dissipation shell (1), both ends of the inner cylinders (9) being in communication with the heat dissipation shell (1), the inner cylinders (9) in the linear and annular arrays being slidably connected to push rods (10), the push rods (10) passing through the heat dissipation shell (1) and the two being slidably connected to each other, the push rods (10) in adjacent linear arrays being fixedly connected to a trigger rod (11), the extrusion blocks (8) in the annular array being extrusion-matched with the trigger rods (11) in the annular array, a first elastic element (12) being provided between the push rods (10) and the heat dissipation shell (1), a through hole being provided on the push rods (10), a first one-way valve (13) being provided in the through hole, a through hole being provided near the inner wall of the heat dissipation shell (1) being provided in the through hole, a second one-way valve (14), and a fixing assembly for fixing a battery being provided inside the heat dissipation shell (1); The fixing assembly comprises a second motor (201), the second motor (201) is fixedly connected to the bottom of the heat dissipation shell (1), a fixing disk (202) is fixedly connected inside the heat dissipation shell (1), an output shaft of the second motor (201) is rotationally connected to the heat dissipation shell (1), an output shaft of the second motor (201) is rotationally connected to the fixing disk (202), an output shaft of the second motor (201) is fixedly connected to a rotating disk (203) located inside the heat dissipation shell (1), the rotating disk (203) is slidably connected to a ring-shaped array of fixing claws (204), a slide groove (205) is provided on the fixing disk (202), and the fixing claws (204) of the ring-shaped array are all slidably connected to the slide groove (205).

2. A battery thermal management device according to claim 1, characterized in that: The extrusion block (8) is an isosceles triangle, and the bottom of the extrusion block (8) fits the inner wall of the gear ring (7).

3. The battery thermal management device according to claim 1 is characterized in that: The slide groove (205) is formed by alternating arc grooves in a circular array and V-shaped grooves in a circular array and connected end to end, the center of the arc groove is the same as the center of the fixed disk (202), the opening of the V-shaped groove faces the center of the fixed disk (202), and the symmetry axis of the V-shaped groove coincides with the radius of the fixed disk (202).

4. The battery thermal management device according to claim 1 is characterized in that: The heat dissipation shell (1) further comprises a shock-absorbing component for preventing leakage of the internal medium of the heat dissipation shell (1); the shock-absorbing component is arranged at the bottom of the heat dissipation shell (1); the shock-absorbing component comprises a first piston shaft (301) in an annular array; the first piston shafts (301) in the annular array are all fixedly connected to the bottom of the heat dissipation shell (1); the bottom of the heat dissipation shell (1) is slidably connected to a mounting cylinder (302) in an annular array; the mounting cylinders (302) in the annular array are respectively slidably connected to adjacent first piston shafts (301); a second elastic element (303) is arranged between the mounting cylinders (302) in the annular array and the heat dissipation shell (1); the sealing cover (2) is provided with a sealing component for increasing its sealing strength to the heat dissipation shell (1); and the mounting cylinders (302) in the annular array are each provided with a shock-absorbing component for further reducing vibration force.

5. A battery thermal management device according to claim 4, characterized in that: The sealing assembly comprises a connecting ring (304), the connecting ring (304) being fixedly connected to and in communication with the mounting tubes (302) of the annular array, an inner cavity (305) being provided inside the sealing cover (2), a connecting pipe (306) being fixedly connected between the connecting ring (304) and the sealing cover (2), the two ends of the connecting pipe (306) being respectively in communication with the connecting ring (304) and the inner cavity (305), and a sealing ring (305) being provided on the sealing cover (2). 7), a cavity is provided in the sealing ring (307), the cover (2) is fixedly connected with a butt-joint pipe (308) in an annular array, the butt-joint pipes (308) in the annular array are all in communication with the inner cavity (305) in the cover (2), the butt-joint pipes (308) in the annular array are all in communication with the cavity in the sealing ring (307), and a delay component for maintaining the sealing strength of the sealing ring (307) on the heat dissipation shell (1) is provided in the cover (2).

6. A battery thermal management device according to claim 5, characterized in that: The shock-absorbing assembly includes a sliding rod (401), the sliding rod (401) is slidably connected to the inside of the mounting tube (302), the sliding rod (401) is fixedly connected to a blocking block (402), the blocking block (402) is sealingly matched with the adjacent mounting tube (302), a third elastic element (403) is arranged between the blocking block (402) and the adjacent mounting tube (302), and an extrusion plate (404) is fixedly connected to the inside of the first piston shaft (301), and the extrusion plate (404) is extruded and matched with the adjacent sliding rod (401).

7. A battery thermal management device according to claim 6, characterized in that: The extruded plate (404) is a right-angled triangular plate, the short right-angled side of the extruded plate (404) faces the heat dissipation shell (1), and the long right-angled side of the extruded plate (404) faces the center of the connection ring (304).

8. The battery thermal management device according to claim 5 is characterized in that: The delay assembly comprises a second piston shaft (501), the second piston shaft (501) is slidably connected in the cover (2), a fourth elastic element (503) is arranged between the second piston shaft (501) and the cover (2), the second piston shaft (501) is fixedly connected to a sawtooth rod (502), the cover (2) is slidably connected to a clamping block (504) in the inner cavity (305), a fifth elastic element (505) is arranged between the clamping block (504) and the cover (2), and the sawtooth rod (502) and the clamping block (504) are pressed and matched.

9. A battery thermal management method, according to the battery thermal management device of claim 8, characterized in that: The following steps are involved: Step S1: when the battery is running, the first motor (5) is turned on, and the output shaft of the first motor (5) drives the extrusion blocks (8) in the annular array to rotate through the gear (6) and the gear ring (7), and the extrusion blocks (8) rotate the extrusion trigger rod (11), so that the trigger rod (11) drives the injection rods (10) in the linear array thereon to extract the coolant on the outside of the heat dissipation shell (1) into the adjacent inner cylinder (9), and then inject it into the surrounding of the battery, and the cycle continues; Step S2: when the battery is running, the second motor (201) is turned on, and the output shaft of the second motor (201) drives the fixing claws (204) of the annular array to rotate through the rotating disk (203), and the fixing claws (204) of the annular array rotate and slide along the sliding groove (205), so that the fixing claws (204) of the annular array alternately fix the battery; Step S3: the vehicle travels to a bumpy road section, and the bump force drives the first piston shaft (301) on the heat dissipation shell (1) to slide along the adjacent mounting cylinder (302), and the second elastic element (303) is compressed to offset the bump. The first piston shaft (301) simultaneously pushes the hydraulic oil in the mounting cylinder (302), so that the hydraulic oil pushes the second piston shaft (501), and the second piston shaft (501) drives the gas in the inner cavity (305) to enter the cavity in the sealing ring (307), so that the sealing ring (307) expands and further fits the heat dissipation shell (1); Step S4: when the first piston shaft (301) slides along the adjacent mounting cylinder (302), the extrusion plate (404) squeezes the adjacent sliding rod (401), so that the sliding rod (401) drives the blocking block (402) thereon to reduce the flow aperture of the adjacent mounting cylinder (302) to form a damping force; Step S5: When the second piston shaft (501) is pushed by the hydraulic oil, the second piston shaft (501) drives the sawtooth rod (502) thereon to move synchronously, the fourth elastic element (503) is compressed, the sawtooth rod (502) squeezes the clamping block (504), and the clamping block (504) applies resistance to the sawtooth rod (502), thereby extending the reset time of the second piston shaft (501).

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