A power battery coolant circulation pump and an automobile

Abstract

This invention discloses a power battery coolant circulation pump and an automobile, relating to the field of automotive parts. The power battery coolant circulation pump includes: a first housing, a second housing, and a rotating mechanism; a liquid storage space is formed between the first housing and the second housing; the rotating mechanism is disposed within the liquid storage space and includes a gear assembly, a first rotating component, and a second rotating component. The second rotating component includes a connecting plate, a centrifugal plate, and a sliding rod. The centrifugal plate is connected to one end of a push-pull bracket near the connecting plate, and the other end of the push-pull bracket abuts against the sliding rod and is sleeved within a limiting cylinder. This invention solves the technical problem common in existing fixed-button power battery coolant circulation pumps where, under inertia, the coolant exerts a thrust to one side inside the pump housing, causing one side of the uniformly rotating impeller to be affected and experience severe friction with the coolant, resulting in a reduction in the service life of the impeller and coolant.

Description

Technical Field

[0001] This invention relates to the field of automotive parts, specifically to a power battery coolant circulation pump and an automobile. Background Technology

[0002] New energy vehicles refer to automobiles that use unconventional vehicle fuels as a power source or, using conventional vehicle fuels and employing new onboard power devices, integrate advanced technologies in vehicle power control and drive, resulting in vehicles with advanced technical principles and new technologies and structures. New energy vehicles include pure electric vehicles, range-extended electric vehicles, hybrid electric vehicles, and fuel cell electric vehicles. Since the main function of the cooling system in new energy vehicles is to dissipate heat into the air to prevent engine overheating, the circulating pump, as the "heart" of the cooling system, is crucial.

[0003] Currently, most common power battery coolant circulation pumps have inlet and outlet pipes. Coolant enters the pump through the inlet pipe and is then transported to the outlet pipe by the rotating impeller, forming a circulation loop. However, because new energy vehicles are driven by electric motors, their starting torque and speed are relatively high. Due to inertia, the coolant inside the pump casing exerts a thrust to one side, causing one side of the uniformly rotating impeller to be affected and experience severe friction with the coolant. This reduces the impeller's lifespan. Furthermore, the contact between the damaged impeller and the coolant accelerates corrosion and reactions between the coolant components and the impeller, further impacting the lifespan of both the coolant and the power battery coolant circulation pump.

[0004] Therefore, existing power battery coolant circulation pumps generally have the technical problem that, under the action of inertia, the coolant will exert a thrust to one side inside the power battery coolant circulation pump casing, causing one side of the uniformly rotating impeller to be affected and to have severe friction with the coolant, resulting in a reduction in the service life of the impeller and coolant. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the purpose of this invention is to provide a power battery coolant circulation pump and automobile, which aims to solve the technical problem that in the prior art, the coolant, under the action of inertia, will exert a thrust to one side inside the power battery coolant circulation pump housing, causing the uniformly rotating impeller to be affected on one side and to have severe friction with the coolant, resulting in a reduction in the service life of the impeller and the coolant.

[0006] One aspect of the present invention is to provide a power battery coolant circulation pump, the power battery coolant circulation pump comprising:

[0007] A first housing, a rotating mechanism, and a second housing that is sealed to the edge of the first housing;

[0008] A liquid storage space is formed between the first housing and the second housing for storing coolant. An inlet pipe and a drain pipe are respectively provided at both ends of the second housing, with the inlet pipe located on the side close to the rotating mechanism.

[0009] The rotating mechanism is located within the liquid storage space and is used to rotate and transport coolant. The rotating mechanism includes a gear assembly, a first rotating component and a second rotating component sleeved on the gear assembly. The second rotating component includes a connecting plate connected to the gear assembly, a centrifugal plate disposed on the connecting plate, and a sliding rod disposed in the middle of the connecting plate. A limiting cylinder is sleeved on the side of the sliding rod away from the connecting plate. The centrifugal plate is connected to one end of a push-pull bracket on the side near the connecting plate. The other end of the push-pull bracket abuts against the sliding rod and is sleeved inside the limiting cylinder.

[0010] When the car starts, the limiting cylinder moves away from the connecting plate due to inertia, so that the push-pull bracket drives the centrifugal plate to move closer to the center of the connecting plate, reducing the rotation arc of the centrifugal plate and reducing the resistance of the coolant to the first and second rotating components when the car starts.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: the power battery coolant circulation pump provided by the present invention can effectively reduce impeller wear and improve the service life of the impeller and coolant. Specifically, it comprises a first housing, a rotating mechanism, and a second housing sealed to the edge of the first housing; a liquid storage space is formed between the first housing and the second housing for storing coolant; an inlet pipe and a drain pipe are respectively provided through both ends of the second housing, with the inlet pipe located on the side closer to the rotating mechanism; the rotating mechanism is located within the liquid storage space for rotating and transporting coolant; the rotating mechanism includes a gear assembly, a first rotating component and a second rotating component sleeved on the gear assembly; the second rotating component includes a connecting plate connected to the gear assembly, a centrifugal plate on the connecting plate, and a slide rod located in the middle of the connecting plate; the slide rod is sleeved on the side away from the connecting plate. The limiting cylinder and centrifugal plate are connected to one end of the push-pull bracket near the connecting plate. The other end of the push-pull bracket abuts against the slide rod and is fitted inside the limiting cylinder. When the car starts, the limiting cylinder moves away from the connecting plate under inertia, so that the push-pull bracket drives the centrifugal plate to move closer to the center of the connecting plate, reducing the rotation arc of the centrifugal plate and reducing the resistance of the coolant to the first and second rotating components when the car starts. This reduces the surface friction between the coolant and the first and second rotating components, thereby improving the service life of the power battery coolant circulation pump. This solves the common technical problem that the coolant, under inertia, will exert a thrust to one side inside the power battery coolant circulation pump housing, causing the uniformly rotating impeller to be affected and violently rub against the coolant, resulting in a reduction in the service life of the impeller and coolant.

[0012] According to one aspect of the above technical solution, the slide rod is provided with a limiting member at the end away from the connecting plate, and the limiting member is used to abut against the limiting cylinder to restrict the movement of the limiting cylinder.

[0013] According to one aspect of the above technical solution, the centrifugal plate includes a rotating plate connected to the push-pull bracket and a sliding plate connected to the rotating plate. The connecting plate has a groove on the side near the gear assembly, and the sliding plate is slidably connected in the groove.

[0014] According to one aspect of the above technical solution, the gear assembly includes a meshing gear for power transmission and a rotating member connected to the meshing gear. The meshing gear is disposed on the periphery of the first housing, and the rotating member is disposed on the inner wall of the first housing. The rotating member connects the connecting plate and the first rotating assembly. By controlling the rotation of the meshing gear, the rotating member is driven to rotate, thereby driving the first rotating assembly and the second rotating assembly to rotate.

[0015] According to one aspect of the above technical solution, the rotating member is provided with a moving groove on the side near the connecting plate, and the sliding plate is connected to a slider on the side near the rotating member, and the slider is slidably connected in the moving groove.

[0016] According to one aspect of the above technical solution, the slider includes a first slider portion connected to the slide plate and a second slider portion connected to the first slider portion. The second slider portion is slidably connected in the moving groove. The end of the second slider portion near the first slider portion is connected to the side wall of the moving groove by a spring. When the rotating plate drives the slide plate to move toward the center of the connecting plate, the first slider portion drives the second slider portion to slide and compress the spring.

[0017] According to one aspect of the above technical solution, the movable groove is connected to a liquid extraction component on the side near the first rotating component. The liquid extraction component includes a liquid extraction pipe connected to the movable groove, a grid member disposed at the opening of the liquid extraction pipe, and the spring is compressed by the slider. A cavity is formed between the movable groove and the liquid extraction pipe so that the coolant outside the liquid extraction component enters the cavity through the liquid extraction pipe.

[0018] According to one aspect of the above technical solution, the first rotating assembly includes a rotating plate sleeved on the side wall of the rotating member, and an impeller plate connected to the rotating plate. The rotating plate is provided with an arc-shaped opening, and the impeller plate is engaged in the middle of the arc-shaped opening. The rotating plate is connected to the rotating member through a torsion spring.

[0019] According to one aspect of the above technical solution, the liquid extraction pipe is connected to the arc-shaped opening on the side near the grid member, and the coolant enters the cavity through the arc-shaped opening, the grid member, and the liquid extraction pipe.

[0020] Another aspect of the present invention is to provide an automobile that includes a power battery coolant circulation pump as described in any of the above-described technical solutions. Attached Figure Description

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0022] Figure 1 This is a schematic diagram of the structure of the power battery coolant circulation pump in the first embodiment of the present invention;

[0023] Figure 2 This is an exploded schematic diagram of the power battery coolant circulation pump in the first embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the rotating mechanism in the first embodiment of the present invention;

[0025] Figure 4 This is a cross-sectional view of the rotating mechanism in the first embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the liquid extraction assembly in the first embodiment of the present invention;

[0027] Figure 6 This is a schematic diagram of the rotating plate and the push-pull bracket in the first embodiment of the present invention;

[0028] Component symbol explanation in the attached diagram:

[0029] First housing 10, snap-fit ​​block 11, second housing 20, snap-fit ​​hole 21, liquid inlet pipe 22, liquid outlet pipe 23, rotating mechanism 30, gear assembly 31, first rotating assembly 32, second rotating assembly 33, liquid extraction assembly 34, meshing gear 310, rotating part 311, moving groove 3110, spring 3111, slider 312, first slider part 3120, second slider part 3121, rotating plate 320, impeller plate 321, impeller part 3210, snap-fit ​​part 3211, connecting plate 330, centrifugal plate 331, limiting cylinder 332, push-pull bracket 333, slide rod 334, limiting part 3340, rotating plate 3310, sliding plate 3311, liquid extraction pipe 340, grid part 341. Detailed Implementation

[0030] To make the objectives, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Several embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the present invention will be more thorough and complete.

[0031] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," "upper," "lower," and similar expressions used herein are for illustrative purposes only and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0032] In this invention, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. The term "and / or" as used herein includes any and all combinations of one or more of the related listed items.

[0033] Please see Figure 1-6 The image shows a power battery coolant circulation pump provided in the first embodiment of the present invention, which is used to cool the battery and prevent the battery from overheating. The power battery coolant circulation pump includes: a first housing 10, a rotating mechanism 30, and a second housing 20 that is sealed to the edge of the first housing 10.

[0034] The first housing 10 has several snap-fit ​​blocks 11 near the edge of the second housing 20, and the second housing 20 has snap-fit ​​holes 21 near the edge of the first housing 10. The snap-fit ​​blocks 11 are inserted into the snap-fit ​​holes 21 to achieve edge sealing between the first housing 10 and the second housing 20. A liquid storage space is formed between the first housing 10 and the second housing 20 for storing coolant. An inlet pipe 22 and a drain pipe 23 are respectively provided at both ends of the second housing 20. The inlet pipe 22 is located on the side near the rotating mechanism 30.

[0035] Furthermore, the rotating mechanism 30 is disposed in the liquid storage space and is used to rotate and transport coolant. The rotating mechanism 30 includes a gear assembly 31, a first rotating component 32 and a second rotating component 33 sleeved on the gear assembly 31. The rotation of the gear assembly 31 drives the first rotating component 32 and the second rotating component 33 to rotate, so that the rotation of the first rotating component 32 and the second rotating component 33 drives the coolant to be transported to the drain pipe 23.

[0036] The gear assembly 31 includes a meshing gear 310 for power transmission and a rotating member 311 connected to the meshing gear 310. The meshing gear 310 is located on the periphery of the first housing 10, and the rotating member 311 is located on the inner wall of the first housing 10. The rotating member 311 connects the connecting plate 330 and the first rotating assembly 32. By controlling the rotation of the meshing gear 310, the rotating member 311 is driven to rotate, thereby driving the first rotating assembly 32 and the second rotating assembly 33 to rotate, and delivering coolant to the drain pipe 23.

[0037] The second rotating assembly 33 includes a connecting plate 330 connected to the gear assembly 31, a centrifugal plate 331 disposed on the connecting plate 330, and a sliding rod 334 disposed in the middle of the connecting plate 330. A limiting sleeve 332 is sleeved on the side of the sliding rod 334 away from the connecting plate 330. One end of a push-pull bracket 333 is connected to the side of the centrifugal plate 331 near the connecting plate 330. The other end of the push-pull bracket 333 abuts against the sliding rod 334 and is sleeved in the limiting sleeve 332. In this embodiment, there are 8 centrifugal plates 331, which are vertically connected to the connecting plate 330. The centrifugal plates 331 are arranged around the sliding rod 334 at intervals. The push-pull bracket 333 is bolted to the side of the centrifugal plate 331 near the sliding rod 334. The push-pull bracket 333 is inclined, with one end connected to the centrifugal plate 331 and the other end abutting against the sliding rod 334. The limiting sleeve 332 is sleeved on the sliding rod 334 and the push-pull bracket 333.

[0038] When the car starts, the coolant applies pressure to the connecting plate 330 under the action of inertia, while the limiting cylinder 332 moves away from the connecting plate 330 under the action of inertia. This causes the push-pull bracket 333 to drive the centrifugal plate 331 to move closer to the center of the connecting plate 330, reducing the rotation arc of the centrifugal plate 331. This reduces the resistance of the coolant to the first rotating assembly 32 and the second rotating assembly 33 when the car starts, and reduces surface friction. In other words, reducing the rotation arc of the centrifugal plate 331 reduces the liquid-receiving area of ​​the centrifugal plate 331, reducing the amount and rate of coolant delivery. This, in turn, reduces the resistance of the coolant to the first rotating assembly 32 and the second rotating assembly 33, and reduces the surface friction between the coolant and the first rotating assembly 32 and the second rotating assembly 33, thereby improving the service life of the power battery coolant circulation pump.

[0039] In addition, the slide bar 334 is provided with a limiting member 3340 at the end away from the connecting plate 330. The limiting member 3340 is used to abut against the limiting cylinder 332 to restrict the movement of the limiting cylinder 332 and prevent the limiting cylinder 332 from falling off when it moves away from the connecting plate 330.

[0040] The centrifugal plate 331 includes a rotating plate 3310 connected to a push-pull bracket 333, and a sliding plate 3311 connected to the rotating plate 3310. The connecting plate 330 has a groove on the side near the gear assembly 31, and the sliding plate 3311 is slidably connected in the groove. The groove has an opening on the side near the rotating plate 3310. A limiting block is provided between the sliding plate 3311 and the rotating plate 3310. The width of the limiting block is smaller than the width and length of the sliding plate 3311 and the rotating plate 3310, and the length of the limiting block is smaller than the length of the groove opening, so that the limiting block can be engaged in the groove opening to connect the centrifugal plate 331 and the connecting plate 330. Therefore, the limiting block can be slid in the groove opening by pushing or pulling the sliding plate 3311 or the rotating plate 3310.

[0041] Meanwhile, the rotating member 311 has a moving groove 3110 on the side near the connecting plate 330, and the sliding plate 3311 is connected to a slider 312 on the side near the rotating member 311. The slider 312 is slidably connected in the moving groove 3110. The slider 312 includes a first slider part 3120 connected to the sliding plate 3311 and a second slider part 3121 connected to the first slider part 3120. The second slider part 3121 is slidably connected in the moving groove 3110. The end of the second slider part 3121 near the first slider part 3120 is connected to the side wall of the moving groove 3110 through a spring 3111. When the rotating plate 3310 drives the sliding plate 3311 to move toward the center of the connecting plate 330, the first slider part 3120 drives the second slider part 3121 to slide and compress the spring 3111.

[0042] Furthermore, the first slider part 3120 is disposed inside the slide plate 3311. The rotating plate 3310 is moved by the push-pull bracket 333, which in turn drives the slide plate 3311 to move. The movement of the slide plate 3311 drives the first slider part 3120 to move, thereby driving the second slider part 3121 to move to compress or stretch the spring 3111.

[0043] Additionally, a liquid extraction assembly 34 is connected to the moving groove 3110 on the side near the first rotating assembly 32. The liquid extraction assembly 34 includes a liquid extraction pipe 340 connected to the moving groove 3110 and a grid member 341 disposed at the opening of the liquid extraction pipe 340. A cavity is formed between the moving groove 3110 and the liquid extraction pipe 340 by the compression of the spring 3111 by the slider 312, so that the coolant outside the liquid extraction assembly 34 enters the cavity through the liquid extraction pipe 340. Air bubbles in the coolant are broken into smaller bubbles by the grid member 341, reducing air bubbles inside the coolant and preventing a decrease in cooling effect due to a large number of air bubbles inside the coolant.

[0044] Specifically, the push-pull bracket 333 pushes the rotating plate 3310 toward the center of the connecting plate 330, causing the slide plate 3311 to move the second slider 3121 to compress the spring 3111. This causes the slider 312 to form a cavity with the interior of the moving groove 3110 at one end near the liquid extraction assembly 34, allowing the coolant outside the liquid extraction assembly 34 to enter the cavity through the grille 341 and the liquid extraction pipe 340. This releases some of the pressure of the coolant on the outside into the moving groove 3110 and changes the direction of coolant flow on the surfaces of the first rotating assembly 32 and the second rotating assembly 33, thereby reducing the friction between the coolant and the surfaces of the first rotating assembly 32 and the second rotating assembly 33 during vehicle startup, and improving the service life of the first rotating assembly 32 and the second rotating assembly 33.

[0045] Furthermore, the first rotating assembly 32 includes a rotating plate 320 sleeved on the side wall of the rotating member 311, and an impeller plate 321 connected to the rotating plate 320. The rotating plate 320 has an arc-shaped opening, and the impeller plate 321 is engaged in the middle of the arc-shaped opening. The rotating plate 320 is connected to the rotating member 311 by a torsion spring. There are eight impeller plates 321. Each impeller plate 321 includes an impeller portion 3210 located outside the rotating plate 320 and a snap-fit ​​member 3211 engaged in the arc-shaped opening. The snap-fit ​​member 3211 is connected to the impeller portion 3210. The width of the snap-fit ​​member 3211 decreases on the side closer to the impeller portion 3210, so that the impeller portion 3210 and the snap-fit ​​member 3211 form a concave shape and are engaged in the middle of the arc-shaped opening.

[0046] When the coolant tilts forward rapidly under inertia and applies pressure to the impeller 3210, the impeller 3210 will drive the rotating plate 320 to shift under pressure because the rotating plate 320 is connected to the rotating component 311 by a torsion spring. This relieves the pressure on the surface of the impeller 3210, thereby reducing friction, reducing wear on the impeller 3210, and extending the service life of both the coolant and the impeller 3210.

[0047] Furthermore, the extraction pipe 340 is connected to the arc-shaped opening on the side near the grille 341, allowing coolant to enter the cavity through the arc-shaped opening, grille 341, and extraction pipe 340. After the car starts moving, the spring 3111, due to its elasticity, pushes the second slider 3121 back to its original position, causing the coolant inside the moving groove 3110 to be pushed out. This breaks up air bubbles in the coolant into smaller bubbles by the grille 341, reducing air bubbles in the coolant and preventing a decrease in cooling effect due to a large number of air bubbles inside the coolant.

[0048] Compared to existing technologies, the power battery coolant circulation pump provided in this embodiment has the following advantages: It effectively reduces impeller wear and improves the service life of the impeller and coolant. Specifically, it comprises a first housing, a rotating mechanism, and a second housing sealed to the edge of the first housing; a liquid storage space is formed between the first and second housings for storing coolant; an inlet pipe and a outlet pipe are respectively provided at both ends of the second housing, with the inlet pipe located near the rotating mechanism; the rotating mechanism is located within the liquid storage space and is used to rotate and transport the coolant; the rotating mechanism includes a gear assembly, a first rotating component and a second rotating component sleeved on the gear assembly; the second rotating component includes a connecting plate connected to the gear assembly, a centrifugal plate on the connecting plate, and a slide rod located in the middle of the connecting plate, the slide rod being located away from the connecting plate. A limiting cylinder is fitted on one side of the plate. The centrifugal plate is connected to one end of the push-pull bracket near the connecting plate. The other end of the push-pull bracket abuts against the slide rod and is fitted inside the limiting cylinder. When the car starts, the limiting cylinder moves away from the connecting plate under inertia, so that the push-pull bracket drives the centrifugal plate to move closer to the center of the connecting plate, reducing the rotation arc of the centrifugal plate, reducing the resistance of the coolant to the first and second rotating components when the car starts, reducing the surface friction between the coolant and the first and second rotating components, thereby improving the service life of the power battery coolant circulation pump. This solves the common technical problem that the coolant, under inertia, will exert a thrust to one side inside the power battery coolant circulation pump housing, causing the uniformly rotating impeller to be affected and violently rub against the coolant, resulting in a reduction in the service life of the impeller and coolant.

[0049] A second embodiment of the present invention provides an automobile, including the power battery coolant circulation pump described in the above embodiments.

[0050] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0051] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A power battery coolant circulation pump, characterized in that, The power battery coolant circulation pump includes: A first housing, a rotating mechanism, and a second housing that is sealed to the edge of the first housing; A liquid storage space is formed between the first housing and the second housing for storing coolant. An inlet pipe and a drain pipe are respectively provided at both ends of the second housing, with the inlet pipe located on the side close to the rotating mechanism. The rotating mechanism is disposed within the liquid storage space and is used to rotate and transport coolant. The rotating mechanism includes a gear assembly, a first rotating component and a second rotating component sleeved on the gear assembly. The second rotating component includes a connecting plate connected to the gear assembly, a centrifugal plate disposed on the connecting plate, and a slide rod disposed in the middle of the connecting plate. A limiting cylinder is sleeved on the side of the slide rod away from the connecting plate. The centrifugal plate is connected to one end of a push-pull bracket on the side near the connecting plate. The other end of the push-pull bracket abuts against the slide rod and is sleeved in the limiting cylinder. The centrifugal plate includes a rotating plate connected to the push-pull bracket and a sliding plate connected to the rotating plate. The connecting plate is provided with a sliding groove on the side near the gear assembly, and the sliding plate is slidably connected in the sliding groove. When the car starts, the limiting cylinder moves away from the connecting plate due to inertia, so that the push-pull bracket drives the centrifugal plate to move closer to the center of the connecting plate, reducing the rotation arc of the centrifugal plate and reducing the resistance of the coolant to the first and second rotating components when the car starts.

2. The power battery coolant circulation pump according to claim 1, characterized in that, The slide bar has a limiting member at one end away from the connecting plate. The limiting member is used to abut against the limiting cylinder to restrict the movement of the limiting cylinder.

3. The power battery coolant circulation pump according to claim 1, characterized in that, The gear assembly includes a meshing gear for power transmission and a rotating component connected to the meshing gear. The meshing gear is located on the periphery of the first housing, and the rotating component is located on the inner wall of the first housing. The rotating component connects the connecting plate and the first rotating assembly. By controlling the rotation of the meshing gear, the rotating component is driven to rotate, thereby driving the first rotating assembly and the second rotating assembly to rotate.

4. The power battery coolant circulation pump according to claim 3, characterized in that, The rotating component has a moving groove on the side near the connecting plate, and the sliding plate is connected to a slider on the side near the rotating component, with the slider slidably connected within the moving groove.

5. The power battery coolant circulation pump according to claim 4, characterized in that, The slider includes a first slider portion connected to the slide plate and a second slider portion connected to the first slider portion. The second slider portion is slidably connected in the moving groove. The end of the second slider portion near the first slider portion is connected to the side wall of the moving groove by a spring. When the rotating plate drives the slide plate to move toward the center of the connecting plate, the first slider portion drives the second slider portion to slide and compress the spring.

6. The power battery coolant circulation pump according to claim 5, characterized in that, The movable groove is connected to a liquid extraction component on the side near the first rotating component. The liquid extraction component includes a liquid extraction pipe connected to the movable groove, a grid member disposed at the opening of the liquid extraction pipe, and a spring compressed by the slider. A cavity is formed between the movable groove and the liquid extraction pipe so that the coolant outside the liquid extraction component enters the cavity through the liquid extraction pipe.

7. The power battery coolant circulation pump according to claim 6, characterized in that, The first rotating assembly includes a rotating plate sleeved on the side wall of the rotating component and an impeller plate connected to the rotating plate. The rotating plate has an arc-shaped opening, and the impeller plate is engaged in the middle of the arc-shaped opening. The rotating plate is connected to the rotating component through a torsion spring.

8. The power battery coolant circulation pump according to claim 7, characterized in that, The liquid extraction pipe is connected to the arc-shaped opening on the side near the grid member, and the coolant enters the cavity through the arc-shaped opening, the grid member, and the liquid extraction pipe.

9. A car, characterized in that, The power battery coolant circulation pump included in any one of claims 1-8.

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