A scroll electronic water pump for electric vehicle thermal management system

Abstract

The present application relates to the technical field of heat management, in particular to a novel scroll electronic water pump for electric vehicle heat management system, which comprises a water pump main body and a buffer cylinder; the inner surface of the buffer cylinder is provided with a floating scroll cavity for converting shaking into swirling; the inner surface of the buffer cylinder is provided with a water storage and output accumulator piston; the bottom surface of the accumulator piston is provided with a steady flow funnel for collecting cooling liquid without affecting the water pressure of the piston; the bottom surface of the buffer cylinder is provided with a centrifugal liquid locking valve which is controlled to open and close according to the start and stop of the pump; the bottom surface of the buffer cylinder is provided with a shock absorbing seat for reducing the influence of pump vibration on the pipeline; the liquid inertia and centrifugal force of the swirling are used to convert the shaking kinetic energy into local stable pressure potential energy, eliminate the air suction caused by the instantaneous liquid surface drop, and reduce the problems of short-term air suction, cavitation, and sudden condensation efficiency reduction of the circulating pump during use.

Description

Technical Field

[0001] This invention relates to the field of thermal management technology, specifically to a vortex electronic water pump for a thermal management system of an electric vehicle. Background Technology

[0002] The vortex electric water pump is a core component of thermal management in electric vehicles, using electronic drive and vortex compression to achieve quiet coolant circulation. It can adjust the flow rate in real time according to changes in battery, motor, and electronic control temperature, precisely removing heat and preventing overheating or overcooling. It is suitable for scenarios such as fast charging, hill climbing, and extreme cold start, ensuring stable range and driving safety.

[0003] During the use of existing vortex electric water pumps, electric vehicles may shake while driving, and the coolant will gradually be lost over time, making it difficult for the coolant to completely fill the inside of the pipes. When the vehicle shakes, the coolant shakes along with it, causing a short-term cavitation at the pump inlet, resulting in cavitation noise and dry running problems.

[0004] In view of this, we propose a vortex electronic water pump for the thermal management system of electric vehicles. Summary of the Invention

[0005] The purpose of this invention is to provide a vortex electronic water pump for an electric vehicle thermal management system, to solve the problems of vortex electronic water pumps mentioned in the background art, such as coolant sloshing leading to short-term cavitation, resulting in cavitation noise and dry running. To achieve the above objective, this invention provides the following technical solution: a vortex electronic water pump for an electric vehicle thermal management system, comprising a pump body, an output pipe fixedly connected to the output end of the pump body, an input pipe fixedly connected to the input end of the pump body, drive blades rotatably connected to the inner surface of the pump body, a drive shaft fixedly connected to the outer surface of the drive blades, a buffer cylinder rotatably connected to the outer surface of the drive shaft, a floating vortex cavity provided on the inner surface of the buffer cylinder, a pressure accumulator piston provided on the inner surface of the buffer cylinder, a flow stabilizing funnel provided on the bottom surface of the pressure accumulator piston, a centrifugal liquid-locking valve provided on the bottom surface of the buffer cylinder, and a shock-absorbing seat provided on the bottom surface of the buffer cylinder.

[0006] Preferably, the floating vortex cavity includes an inner shaft support, which is fixedly connected to the inner surface of the buffer cylinder. An inner mounting shaft is rotatably connected to the inner surface of the inner shaft support. A guide rotor is slidably connected to the outer surface of the inner mounting shaft. An upper floating ring is slidably connected to the outer surface of the inner mounting shaft. An upper support is fixedly connected to the outer surface of the upper floating ring. A guide ring is fixedly connected to the bottom surface of the upper support.

[0007] Preferably, the guide rotor is rotatably connected to the top surface of the upper floating ring, and there are two upper supports and guide rings, which are symmetrically distributed on both sides of the upper floating ring.

[0008] Preferably, the accumulator piston includes a lower floating ring, which is slidably connected to the outer surface of the inner mounting shaft. A connecting seat is fixedly connected to the bottom surface of the lower floating ring. An input groove and a connecting groove are formed on the outer surface of the connecting seat. A sealing strip is fixedly connected to the bottom surface of the connecting seat. A valve plate base is slidably connected to the bottom surface of the connecting seat. A valve plate connecting rod is fixedly connected to the top surface of the valve plate base. A limit groove is formed on the bottom surface of the valve plate base.

[0009] Preferably, there are four input slots and four connecting slots, all of which are distributed in a ring on the outer surface of the connecting seat. There are four sealing strips, which are also distributed in a ring. The gap between the sealing strips and the valve plate base is matched. There are four valve plate bases, which are also distributed in a ring. The valve plate connecting rod is slidably connected to the inner surface of the connecting slot.

[0010] Preferably, the flow-stabilizing funnel includes a bottom connecting ring, which is rotatably connected to the bottom surface of the buffer cylinder. A rotating housing is hinged to the outer surface of the bottom connecting ring. A limit slider is rotatably connected to one end of the rotating housing, and an elastic band is fixedly connected to the outer surface of the rotating housing.

[0011] Preferably, there are four rotating housings, which are arranged in a ring on the outer surface of the bottom connecting ring. The limiting slider is slidably connected to the inner surface of the limiting groove, and both ends of the elastic band are fixedly connected to the rotating housing.

[0012] Preferably, the centrifugal liquid-locking valve includes a valve mounting groove, which is formed on the inner surface of the buffer cylinder. An arc-shaped baffle is slidably connected to the inner surface of the valve mounting groove. A baffle pusher is fixedly connected to the outer surface of the arc-shaped baffle. A pusher slide groove is formed on the outer surface of the drive shaft. A connecting pin is fixedly connected to the outer surface of the arc-shaped baffle. A return spring is sleeved on the outer surface of the connecting pin.

[0013] Preferably, the baffle push block is slidably connected to the inner surface of the push block groove, the arc-shaped baffle is slidably connected to the outer surface of the drive shaft, the connecting pin passes through the arc-shaped baffle, and the two ends of the return spring are fixedly connected to the connecting pin and the arc-shaped baffle respectively.

[0014] Preferably, the shock absorber includes a mounting bottom ring, which is fixedly connected to the outer surface of the input pipe. An elastic tongue is fixedly connected to the outer surface of the mounting bottom ring. A floating rigid ring is fixedly connected to the bottom surface of the buffer cylinder. A fixed pipe is fixedly connected to one end of the input pipe. A connecting hose is fixedly connected to one end of the fixed pipe. A push ring is fixedly connected to the inner surface of the connecting hose.

[0015] Preferably, the elastic tongue bends outward, the floating rigid ring is slidably connected to the outer surface of the elastic tongue, the mounting bottom ring is fixedly connected to the outer surfaces of both the input pipe and the fixed pipe, the two ends of the connecting hose are respectively fixedly connected to the bottom surfaces of the fixed pipe and the buffer cylinder, and the pushing ring is in contact with the baffle push block.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] In this invention, the combination of a floating vortex cavity, a pressure-accumulating piston, and a flow-stabilizing funnel achieves a "shaking-stabilizing-replenishing" liquid supply effect. The guide ring in the floating vortex cavity converts the horizontal shaking caused by vehicle acceleration and deceleration into a unidirectional spiral flow, forming a continuously existing low-pressure vortex at the center. Even if the liquid level drops instantly, the vortex remains full of water, blocking the source of cavitation. The pressure-accumulating piston uses the kinetic energy of this vortex to make the lower floating ring automatically rise and fall with the height of the vortex. Normally, the valve plate base opens the input slot, pressing the top clean water into the bottom "small water storage tank". When the vortex drops suddenly, the piston moves down as a whole, the sealing strip closes with the valve plate base, and the stored water is squeezed into the pump inlet to fill the suction window.

[0018] In this invention, the combination of the accumulator piston, the centrifugal liquid-locking valve, and the shock absorber seat achieves the effect of "preventing backflow when the pump stops, filling the tank immediately upon restarting, and zero pipeline fatigue". The arc-shaped baffle of the centrifugal liquid-locking valve closes under the action of the reset spring when the speed is low to prevent dry suction. When the drive shaft accelerates again, the centrifugal force throws the baffle open to restart. At the same time, the elastic tongue of the shock absorber seat and the floating rigid ring form a "soft-hard-soft" sandwich structure: the elastic tongue absorbs the high-frequency vibration of the impeller, the floating rigid ring bears the tension of the pipeline, and the connecting hose compensates for thermal expansion and contraction. Attached Figure Description

[0019] Figure 1 This is a side view of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the internal structure of the buffer cylinder of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the buffer cylinder and the floating vortex cavity of the present invention.

[0022] Figure 4 This is a schematic diagram of the interlocking structure of the various components of the floating vortex cavity of the present invention;

[0023] Figure 5 This is a schematic diagram of the interlocking structure of the various components of the accumulator piston of the present invention;

[0024] Figure 6 This is an exploded view of the components of the accumulator piston of the present invention;

[0025] Figure 7 This is a schematic diagram of the interaction structure between the connecting seat and the valve plate base of the present invention;

[0026] Figure 8 This is a schematic diagram of the valve plate base and the rotating outer shell of the present invention in mutual cooperation.

[0027] Figure 9 This is a schematic diagram of the interoperability of the components of the flow-stabilizing funnel of the present invention;

[0028] Figure 10 This is a schematic diagram of the cooperative structure of the buffer cylinder, floating vortex cavity, and pressure accumulator piston of the present invention.

[0029] Figure 11 This is a schematic diagram of the interaction between the buffer cylinder and the centrifugal liquid-locking valve of the present invention;

[0030] Figure 12 This is a schematic diagram of the interaction structure of the drive shaft, baffle push block, and push block slide groove of the present invention.

[0031] Figure 13 This is a schematic diagram of the interaction between the drive shaft and the arc-shaped baffle of the present invention;

[0032] Figure 14 This is a schematic diagram of the interlocking structure of the various components of the shock absorber seat of the present invention;

[0033] Figure 15 This is a schematic diagram of the interoperable structure of the mounting base ring, fixing pipe, and connecting hose of the present invention.

[0034] Figure 16 This is a schematic diagram of the structure in which the connecting hose and the push ring of the present invention cooperate.

[0035] In the diagram: 1. Pump body; 11. Output pipe; 12. Input pipe; 2. Drive blades; 21. Drive shaft; 22. Buffer cylinder; 3. Floating vortex chamber; 31. Inner shaft support; 311. Inner mounting shaft; 32. Guide rotor; 33. Upper floating ring; 331. Upper support; 332. Guide ring; 4. Accumulator piston; 41. Lower floating ring; 42. Connecting seat; 421. Input groove; 422. Connecting groove; 423. Sealing strip; 43. Valve plate base; 431. Valve plate 432. Connecting rod; 5. Limiting slide groove; 6. Flow stabilizing funnel; 71. Bottom connecting ring; 82. Rotating outer shell; 921. Limiting slider; 103. Elastic band; 11. Centrifugal liquid-locking valve; 12. Valve mounting groove; 13. Arc-shaped baffle; 14. Baffle push block; 15. Push block slide groove; 16. Connecting pin; 17. Return spring; 18. Shock-absorbing seat; 19. Mounting bottom ring; 10. Elastic tongue; 11. Floating rigid ring; 12. Fixed pipe; 13. Connecting hose; 14. Pushing ring. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Please see Figures 1 to 16 The present invention provides a technical solution: a vortex electronic water pump for an electric vehicle thermal management system, comprising a water pump body 1, an output pipe 11 fixedly connected to the output end of the water pump body 1, an input pipe 12 fixedly connected to the input end of the water pump body 1, a drive blade 2 rotatably connected to the inner surface of the water pump body 1, a drive shaft 21 fixedly connected to the outer surface of the drive blade 2, a buffer cylinder 22 rotatably connected to the outer surface of the drive shaft 21, a floating vortex cavity 3 provided on the inner surface of the buffer cylinder 22, a pressure accumulator piston 4 provided on the inner surface of the buffer cylinder 22, a flow stabilizing funnel 5 provided on the bottom surface of the pressure accumulator piston 4, a centrifugal liquid locking valve 6 provided on the bottom surface of the buffer cylinder 22, and a shock absorber seat 7 provided on the bottom surface of the buffer cylinder 22.

[0038] The water pump body 1 outputs coolant to the output pipe 11 through the drive blades 2, and inputs coolant into the pump inlet of the water pump body 1 through the input pipe 12. The drive shaft 21 distributes a portion of the power of the drive blades 2 to drive the centrifugal liquid lock valve 6. The buffer cylinder 22 plays a role in preventing air suction before being pumped into the water pump body 1.

[0039] The floating vortex cavity 3 includes an inner shaft support 31, which is fixedly connected to the inner surface of the buffer cylinder 22. An inner mounting shaft 311 is rotatably connected to the inner surface of the inner shaft support 31. A guide rotor 32 is slidably connected to the outer surface of the inner mounting shaft 311. An upper floating ring 33 is slidably connected to the outer surface of the inner mounting shaft 311. An upper support 331 is fixedly connected to the outer surface of the upper floating ring 33. A guide ring 332 is fixedly connected to the bottom surface of the upper support 331.

[0040] The guide rotor 32 is rotatably connected to the top surface of the upper floating ring 33. There are two upper supports 331 and guide rings 332, which are symmetrically distributed on both sides of the upper floating ring 33.

[0041] By setting up the floating vortex cavity 3, the sloshing coolant is converted into a swirling flow, with a section of water always remaining at the center to prevent air leakage at the pump inlet. During operation, the upper floating ring 33 can move up and down on the inner mounting shaft 311. Due to the buoyancy of the coolant, it floats on the surface, keeping the guide ring 332 and the guide rotor 32 at a higher water level. When the vehicle shakes, if the coolant level does not completely fill the buffer tank 22, the coolant will slosh inside the buffer tank 22 and come into contact with the guide ring 332. The guide ring 332 is a symmetrically distributed spiral shape. When the coolant sloshes and comes into contact with the guide ring 332, it will move inward along the edge of the guide ring 332. The path is spiral-shaped, and the guide rings 332 are symmetrically distributed, so that the coolant on both sides will converge inward along the spiral path when it sloshes back and forth. The spirals on both sides cause the coolant to turn in the same direction, which impacts and drives the guide rotor 32 to rotate. The rotation of the guide rotor 32 further drives the coolant to form a vortex, forcibly twisting the direction of the "back and forth flat" coolant flow into a rotational direction. The vortex throws the coolant to all sides, forming a stable low-pressure vortex in the center. The coolant will continuously fill the center. Even if the overall liquid level suddenly drops, the vortex will still be filled with water. Compared with the "back and forth flat" sloshing, the pump inlet can always be kept full of water, and the pump suction port will always be immersed in water and will not suck up the air.

[0042] The accumulator piston 4 includes a lower floating ring 41, which is slidably connected to the outer surface of the inner mounting shaft 311. A connecting seat 42 is fixedly connected to the bottom surface of the lower floating ring 41. An input groove 421 and a connecting groove 422 are provided on the outer surface of the connecting seat 42. A sealing strip 423 is fixedly connected to the bottom surface of the connecting seat 42. A valve plate base 43 is slidably connected to the bottom surface of the connecting seat 42. A valve plate connecting rod 431 is fixedly connected to the top surface of the valve plate base 43. A limit groove 432 is provided on the bottom surface of the valve plate base 43.

[0043] There are four input slots 421 and four connecting slots 422, which are distributed in a ring on the outer surface of the connecting seat. There are four sealing strips 423, which are distributed in a ring. The gap between the sealing strips 423 and the valve plate base 43 is matched. There are four valve plate bases 43, which are distributed in a ring. The valve plate connecting rod 431 is slidably connected to the inner surface of the connecting slot 422.

[0044] By using the accumulator piston 4, a portion of the water is normally "pressurized." When the liquid level suddenly drops, this water is immediately pushed out to fill the pump inlet. During operation, the lower floating ring 41 drives the connecting seat 42 to float upwards. The valve plate base 43 is not directly connected to the lower floating ring 41, but is connected to the connecting groove 422 through the valve plate connecting rod 431. Under the influence of gravity, it falls, exposing the input groove 421. The coolant at the top flows from the input groove 421 to below the valve plate base 43 and continues to enter the pump inlet. The coolant below is less affected by the rotation above, and some of the coolant is pumped to the bottom for emergency water replenishment. When the shaking is violent, a vortex is generated. As the speed increases, the height of the low-pressure vortex decreases, and the lower floating ring 41 also descends. The connecting seat 42 contacts the valve plate base 43, which blocks the input groove 421. At the same time, the sealing strip 423 contacts the valve plate base 43, filling the gap between the valve plate base 43. At this time, the connecting seat 42 and the valve plate base 43 block the entire cross section of the buffer cylinder 22 to form a piston. During the descent, the pre-stored small stream of coolant is forced into the pump inlet at once, blocking the gap and ensuring that the pump continuously draws water, keeps running, and does not cavitate. At the same instant, new liquid is continuously swirled into the buffer cylinder 22, the pressure accumulator piston 4 returns to its original position, and is filled again, ready for the next small fluctuation.

[0045] The steady flow funnel 5 includes a bottom connecting ring 51, which is rotatably connected to the bottom surface of the buffer cylinder 22. A rotating housing 52 is hinged to the outer surface of the bottom connecting ring 51. A limit slider 521 is rotatably connected to one end of the rotating housing 52. An elastic band 53 is fixedly connected to the outer surface of the rotating housing 52.

[0046] There are four rotating housings 52, and the four rotating housings 52 are distributed in a ring on the outer surface of the bottom connecting ring 51. The limiting slider 521 is slidably connected to the inner surface of the limiting groove 432, and both ends of the elastic band 53 are fixedly connected to the rotating housings 52.

[0047] By setting the flow-stabilizing funnel 5, it is fixed at the pump inlet and does not rotate with the pump, while increasing the efficiency of coolant entering the pump inlet. During use, the bottom connecting ring 51 connects four annularly distributed rotating shells 52. Each rotating shell 52 can rotate around the connection point of the bottom connecting ring 51. When the valve plate base 43 is at a high position, it will pull up the limiting slider 521, allowing it to slide within the limiting groove 432, thereby pulling up the four rotating shells 52. Together with the elastic band 53, they form a funnel shape, gathering the water below the valve plate base 43 and allowing it to directly enter the pump inlet along the inclined side of the funnel. The wall keeps the continuously rotating liquid in the vortex cavity locked in the center. Even if the liquid level fluctuates slightly, the pump inlet maintains a stable water column. At the same time, it acts as a secondary baffle to prevent backflow or air bubbles from rushing back along the pipe wall, keeping the bottom coolant in a "full liquid ready" state at all times. When the valve plate base 43 descends, it pushes the rotating housing 52 outward to rotate it to a horizontal position and stretches the elastic bands 53 on both sides to form a disc shape, so as not to affect the downward water pressure of the valve plate base 43. When the valve plate base 43 rises, the elasticity of the elastic band 53 will cause the rotating housing 52 to retract more quickly, and the valve plate base 43 will also be lifted.

[0048] The centrifugal liquid-locking valve 6 includes a valve mounting groove 61, which is located on the inner surface of the buffer cylinder 22. An arc-shaped baffle 62 is slidably connected to the inner surface of the valve mounting groove 61. A baffle pusher 63 is fixedly connected to the outer surface of the arc-shaped baffle 62. A pusher slide groove 631 is provided on the outer surface of the drive shaft 21. A connecting pin 64 is fixedly connected to the outer surface of the arc-shaped baffle 62. A return spring 641 is sleeved on the outer surface of the connecting pin 64.

[0049] The baffle push block 63 is slidably connected to the inner surface of the push block groove 631, the arc-shaped baffle 62 is slidably connected to the outer surface of the drive shaft 21, the connecting pin 64 passes through the arc-shaped baffle 62, and the two ends of the return spring 641 are fixedly connected to the connecting pin 64 and the arc-shaped baffle 62 respectively.

[0050] With the centrifugal locking valve 6 in place, when the pump slows down or stops, the centrifugal locking valve 6 closes, blocking air and preventing dry suction and backflow. During use, the two arc-shaped baffles 62 cover the surface of the drive shaft 21, forming a complete plane when they are combined. The arc-shaped baffles 62 are connected by connecting pins 64 and are inserted into the drive shaft 21 by baffle pushers 63 to rotate with the drive shaft 21. When the drive shaft 21 rotates, the centrifugal force throws the two arc-shaped baffles 62 toward the outer casing and compresses the return spring 641, creating a gap between the arc-shaped baffles 62 and the drive shaft 21. Coolant enters the pump inlet through the gap. When the drive shaft 21 slows down or stops, the return spring 641 pushes the two arc-shaped baffles 62 inward to re-combine and block the pump inlet. When the pump stops, the arc-shaped baffles 62 are temporarily closed. When the pump restarts, the arc-shaped baffles 62 open instantly under the action of centrifugal force, and water immediately enters. No air is introduced during the entire process.

[0051] The shock absorber 7 includes a mounting bottom ring 71, which is fixedly connected to the outer surface of the input pipe 12. An elastic tongue 711 is fixedly connected to the outer surface of the mounting bottom ring 71. A floating rigid ring 712 is fixedly connected to the bottom surface of the buffer cylinder 22. A fixed pipe 72 is fixedly connected to one end of the input pipe 12. A connecting hose 721 is fixedly connected to one end of the fixed pipe 72. A push ring 722 is fixedly connected to the inner surface of the connecting hose 721.

[0052] The elastic tongue 711 bends outward, the floating rigid ring 712 slides and connects to the outer surface of the elastic tongue 711, the mounting bottom ring 71 is fixedly connected to the outer surfaces of the input pipe 12 and the fixed pipe 72, the two ends of the connecting hose 721 are fixedly connected to the bottom surfaces of the fixed pipe 72 and the buffer cylinder 22 respectively, and the pushing ring 722 contacts the baffle push block 63.

[0053] By setting the vibration damping seat 7, the vibration of the water pump body 1 to the system is reduced. During use, the elastic tongue 711 is wrapped around the mounting bottom ring 71. The elastic tongue 711 itself is elastic. By connecting with the floating rigid ring 712, vibration is reduced. During the operation of the water pump body 1, it will generate vibration. The elastic tongue 711 first absorbs the high-frequency micro-vibration of the water pump body 1 with its own elasticity. The floating rigid ring 712 is sleeved on the elastic tongue 711 to form a rigid force transmission path, which bears the tensile and compressive load of the pipeline and avoids the soft layer being torn by long-term creep. The water pump body 1 and the buffer cylinder 22 are connected by the fixed pipe 72 and the connecting hose 721. The connecting hose 721 adapts to the length change when the elastic tongue 711 bends and performs secondary vibration isolation to reduce the remaining vibration and thermal expansion and contraction, and reduce pipeline fatigue.

[0054] In this embodiment, as Figure 1 , Figure 2 As shown, the coolant needs to pass through the buffer tank 22 before entering the water pump body 1;

[0055] In this embodiment, as Figure 3 As shown, the internal mounting shaft 311 is located at the center inside the buffer cylinder 22 and is used for the lifting and lowering of the floating vortex chamber 3 and the accumulator piston 4.

[0056] In this embodiment, as Figure 4 As shown, the guide rings 332 are symmetrically distributed, so that the coolant on both sides will gather inward in a spiral path when it sloshes back and forth, and the direction is the same.

[0057] In this embodiment, as Figure 5 , Figure 6 , Figure 7 As shown, the input slot 421 is open when the accumulator piston 4 is at a high position and closed when it is at a low position;

[0058] In this embodiment, as Figure 8 , Figure 9 As shown, the steady flow funnel 5 rises and falls with the pressure accumulator piston 4, forming a funnel shape, which gathers the water below the valve plate base 43. When the valve plate base 43 descends, it will push the rotating housing 52 outward to make it rotate to a horizontal position.

[0059] In this embodiment, as Figure 11 , Figure 12 , Figure 13 As shown, the centrifugal liquid-locking valve 6 opens as the drive shaft 21 rotates, and closes when the shaft stops to prevent dry suction.

[0060] In this embodiment, as Figure 14 , Figure 15 , Figure 16 As shown, the shock absorber 7 is located between the water pump body 1 and the buffer cylinder 22 to reduce the impact of the water pump body 1's own vibration on the pipeline.

[0061] The method of use and advantages of this invention: The vortex electronic water pump for the thermal management system of electric vehicles operates as follows:

[0062] like Figures 1 to 16 As shown, during use, the water pump body 1 draws coolant from the buffer tank 22 into the input pipe 12 through the drive blades 2, and outputs it through the output pipe 11 for circulation cooling, so that the coolant must pass through the buffer tank 22 before entering the water pump body 1.

[0063] When the new energy vehicle shakes, the coolant inside the buffer cylinder 22 will follow the "back and forth" flow. When it comes into contact with the guide ring 332, it will move inward along the edge of the guide ring 332, and the path of movement is spiral. The rotation of the guide rotor 32 further drives the coolant to form a swirling flow, and a stable low-pressure vortex is formed in the center.

[0064] The top coolant flows from the input tank 421 to below the valve plate base 43, and some of the coolant is pumped to the bottom for emergency water replenishment. When the shaking is violent, the height of the low-pressure vortex decreases, and the lower floating ring 41 will also drop, and the pre-stored small stream of coolant is pumped into the pump inlet at once to block the vacuum gap.

[0065] Once the pump slows down or stops, the centrifugal locking valve 6 closes to block air and prevent backflow.

[0066] The shock absorber 7 absorbs the high-frequency micro-vibration of the water pump body 1 using its own elasticity. The connecting hose 721 adapts to the length change when the elastic tongue 711 bends and performs secondary vibration isolation, reducing the remaining vibration and thermal expansion and contraction, and reducing pipeline fatigue.

[0067] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vortex electronic water pump for an electric vehicle thermal management system, comprising a pump body (1), an input pipe (12) fixedly connected to the input end of the pump body (1), a drive blade (2) rotatably connected to the inner surface of the pump body (1), a drive shaft (21) fixedly connected to the outer surface of the drive blade (2), and a buffer cylinder (22) rotatably connected to the outer surface of the drive shaft (21), characterized in that: The inner surface of the buffer cylinder (22) is provided with a floating vortex cavity (3) that converts swaying into vortex. The inner surface of the buffer cylinder (22) is provided with a water storage and pressure accumulator piston (4). The bottom surface of the pressure accumulator piston (4) is provided with a flow-stabilizing funnel (5) that gathers the coolant without affecting the piston's water pressure. The bottom surface of the buffer cylinder (22) is provided with a centrifugal liquid-locking valve (6) that controls the opening and closing according to the pump's start and stop. The bottom surface of the buffer cylinder (22) is provided with a shock-absorbing seat (7) that reduces the impact of the pump's own vibration on the pipeline. The floating vortex cavity (3) includes an inner shaft support (31), which is fixedly connected to the inner surface of the buffer cylinder (22). An inner mounting shaft (311) is rotatably connected to the inner surface of the inner shaft support (31). A guide rotor (32) is slidably connected to the outer surface of the inner mounting shaft (311). An upper floating ring (33) is slidably connected to the outer surface of the inner mounting shaft (311). An upper support (331) is fixedly connected to the outer surface of the upper floating ring (33). A guide ring (332) is fixedly connected to the bottom surface of the upper support (331). The centrifugal liquid-locking valve (6) includes a valve mounting groove (61), which is located on the inner surface of the buffer cylinder (22). An arc-shaped baffle (62) is slidably connected to the inner surface of the valve mounting groove (61). A baffle pusher (63) is fixedly connected to the outer surface of the arc-shaped baffle (62). A pusher slide groove (631) is provided on the outer surface of the drive shaft (21). A connecting pin (64) is fixedly connected to the outer surface of the arc-shaped baffle (62). A reset spring (641) is sleeved on the outer surface of the connecting pin (64).

2. The vortex electronic water pump for an electric vehicle thermal management system according to claim 1, characterized in that: The accumulator piston (4) includes a lower floating ring (41), which is slidably connected to the outer surface of the inner mounting shaft (311). A connecting seat (42) is fixedly connected to the bottom surface of the lower floating ring (41). An input groove (421) is opened on the outer surface of the connecting seat (42). A connecting groove (422) is opened on the outer surface of the connecting seat (42). A sealing strip (423) is fixedly connected to the bottom surface of the connecting seat (42). A valve plate base (43) is slidably connected to the bottom surface of the connecting seat (42). A valve plate connecting rod (431) is fixedly connected to the top surface of the valve plate base (43). A limit groove (432) is opened on the bottom surface of the valve plate base (43).

3. The vortex electronic water pump for an electric vehicle thermal management system according to claim 2, characterized in that: The flow-stabilizing funnel (5) includes a bottom connecting ring (51), which is rotatably connected to the bottom surface of the buffer cylinder (22). The outer surface of the bottom connecting ring (51) is hinged to a rotating housing (52). One end of the rotating housing (52) is rotatably connected to a limit slider (521), and the outer surface of the rotating housing (52) is fixedly connected to an elastic band (53).

4. The vortex electronic water pump for an electric vehicle thermal management system according to claim 3, characterized in that: The shock absorber (7) includes a mounting bottom ring (71), which is fixedly connected to the outer surface of the input pipe (12). An elastic tongue (711) is fixedly connected to the outer surface of the mounting bottom ring (71). A floating rigid ring (712) is fixedly connected to the bottom surface of the buffer cylinder (22). A fixed pipe (72) is fixedly connected to one end of the input pipe (12). A connecting hose (721) is fixedly connected to one end of the fixed pipe (72). A push ring (722) is fixedly connected to the inner surface of the connecting hose (721).

5. A vortex electronic water pump for an electric vehicle thermal management system according to claim 4, characterized in that: The guide rotor (32) is rotatably connected to the top surface of the upper floating ring (33), the gap size of the sealing strip (423) matches that of the valve plate base (43), and the valve plate connecting rod (431) is slidably connected to the inner surface of the connecting groove (422).

6. A vortex electronic water pump for an electric vehicle thermal management system according to claim 5, characterized in that: The limiting slider (521) is slidably connected to the inner surface of the limiting groove (432), both ends of the elastic band (53) are fixedly connected to the rotating shell (52), and the baffle push block (63) is slidably connected to the inner surface of the push block groove (631).

7. A vortex electronic water pump for an electric vehicle thermal management system according to claim 6, characterized in that: The elastic tongue (711) bends outward, the floating rigid ring (712) slides in connection with the outer surface of the elastic tongue (711), and the pushing ring (722) contacts the baffle push block (63).

Images