Hybrid electric vehicle motor cooling water pump combination device and vehicle

Abstract

The invention belongs to the technical field of automobile structure design, and discloses a hybrid electric vehicle motor cooling water pump combination device and an automobile provided with the same. The device comprises a frame, an oil tank bracket, a water pump assembly and a storage battery frame with a built-in storage battery, the bottom of the oil tank bracket is lower than the bottom of the frame, and the oil tank bracket and the storage battery frame are respectively fixed with the frame through bolts; the water pump assembly comprises a water pump and a water pump hanging frame, and the water pump hanging frame with the bottom higher than the bottom of the oil tank bracket is fixed to the bottom of the storage battery frame through bolts. The water pump is ingenious in arrangement and simple and reliable in structure, water pump configuration is completed in a narrow space through the structure of a vehicle body, installation and maintenance are convenient, and the requirements for heat dissipation and light weight are met. And the method is suitable for being popularized in the manufacturing industry of hybrid vehicles or extended-range new energy vehicles with narrow spaces.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile structure design, and specifically discloses a hybrid power automobile motor cooling water pump assembly device and an automobile equipped with the assembly device. Background Art

[0002] Since hybrid vehicles have two power systems, namely the fuel engine system and the electric drive system, the space for layout on the vehicle body is very tight; this space limitation is particularly reflected in the motor cooling system. Improper layout of the water pump is prone to air blockage, affecting the degassing of the motor cooling system, thereby affecting the cooling performance and ultimately the reliability of the vehicle. In order to adapt to the existing space, designers sometimes have to change the water pump model or add some redundant connection devices to take into account, often at the expense of the lightweight of the vehicle to meet the heat dissipation requirements. How to take into account the heat dissipation and lightweight requirements and use the vehicle body structure to complete the water pump configuration in a small space is a technical problem that technicians in this field urgently need to solve. Summary of the invention

[0003] In order to solve the problems in the background technology, the present invention provides a hybrid electric vehicle motor cooling water pump assembly device, and the specific technical solution is as follows:

[0004] It includes a vehicle frame, a fuel tank bracket, a water pump assembly, and a battery frame with a built-in battery, wherein the bottom of the fuel tank bracket is lower than the bottom of the vehicle frame, and the fuel tank bracket and the battery frame are respectively fixed to the vehicle frame by bolts; the water pump assembly includes a water pump and a water pump bracket, the water pump is fixed in the water pump bracket, and the water pump bracket is fixed to the bottom of the battery frame by bolts, and the installation height of the water pump bracket must meet the following requirements: the bottom of the water pump bracket is higher than the bottom of the fuel tank bracket, and the distance between the bottom of the water pump bracket and the longitudinal passing circle of the vehicle>the distance between the bottom of the fuel tank bracket and the longitudinal passing circle of the vehicle.

[0005] This design takes advantage of the rigidity of the frame and the space under the frame. Reasonable layout places the water outlet of the water pump close to the motor that needs cooling and avoids collision between the motor and obstacles under the vehicle.

[0006] Preferably, the outer shell of the water pump includes a middle cylinder and an end cover that fit together and are connected by a plurality of bolts. The mating end surface includes an annular surface and an extension portion extending outward in a petal-like shape with equal arc distribution. The bolt holes for accommodating the plurality of bolts are located in the extension portion, and a water outlet channel of the water pump is provided on the wall of the end cover.

[0007] Preferably, the plurality is 5.

[0008] This design allows the orientation of the water outlet channel to be adjusted by rotating the end cover 72° during assembly.

[0009] Preferably, the water pump bracket includes an upper frame and a lower frame, the upper frame is L-shaped, wrapped around an edge at the bottom of the battery frame, the vertical surface is fixed to the side of the battery frame, and the bottom surface and the lower frame are fixed by bolts; the lower frame is a cylindrical elastic material, which constrains the outer shell of the water pump in the form of a hoop, and a stop groove is provided on the end face of the cylindrical elastic material close to the end cover, and the extension portion is placed in the stop groove.

[0010] This design can ensure that the water pump will not slide circumferentially while the vehicle is driving and can still maintain good positioning.

[0011] Preferably, the top of the battery frame is open, and the edge of the opening is connected to the battery strip by bolts, and a bushing is sleeved on the bolt, one end of the bushing abuts against the battery strip, and the other end abuts against the edge of the opening.

[0012] When encountering different battery models, the length of the bushing can be changed to flexibly adjust the space for storing the batteries in the battery frame, making the device more universal.

[0013] The present invention also claims to protect a car equipped with the device.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The layout is ingenious, the structure is simple and reliable, the water pump is configured in a small space using the vehicle body's own structure, and it is easy to install and maintain, meeting the heat dissipation and lightweight requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of a hybrid vehicle motor cooling water pump assembly device according to an embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the local position relationship between the water pump and the battery frame in an embodiment of the present invention;

[0018] Figure 3 This is a schematic diagram of water pump installation in an embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram of a water pump bracket in an embodiment of the present invention;

[0020] Figure 5 This is a schematic diagram of the external structure of a water pump in an embodiment of the present invention;

[0021] Figure 6 Schematic diagram of the rotation of the water pump end cover in an embodiment of the present invention;

[0022] Figure 7 This is a schematic diagram of the battery frame structure in an embodiment of the present invention;

[0023] Figure 8A diagram showing the position relationship between the water pump and the mailbox bracket in an embodiment of the present invention;

[0024] Fig. 9 This is a schematic diagram of the direction of the water outlet channel in an embodiment of the present invention;

[0025] Fig.10 Schematic diagram of the relative positions of the bottom of the water pump and the bottom of the oil tank bracket in an embodiment of the present invention;

[0026] In the figure: 1. Vehicle frame; 2. Fuel tank bracket; 3. Water pump assembly; 4. Battery frame; 5. Battery;

[0027] 31. Upper frame; 311. Horizontal fastening bolts; 312. Vertical fastening bolts; 32. Lower frame; 33. Water pump; 321. First bushing; 331. Rear cover; 332. Middle cylinder; 333. End cover; 3331. Water inlet; 3332. Water outlet; 3333. Bolt hole; 41. Battery compartment; 42. Battery pressure strip; 43. Second bushing. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is described below in conjunction with the accompanying drawings and specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on this embodiment, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] like Figure 1 As shown, a hybrid vehicle motor cooling water pump assembly device includes a vehicle frame 1, a fuel tank bracket 2, a water pump assembly 3, a battery frame 4, and a battery 5.

[0030] like Figure 1-3 As shown, the fuel tank bracket 2 is mounted on the vehicle frame by bolts. The water pump assembly 3 includes a water pump 33 and a water pump bracket, the battery frame 4 is mounted on the vehicle frame 1 by bolts, the battery 5 is fixed on the battery frame 4, and the battery frame 4 has two through holes on the side for the water pump bracket mounting bolts to pass through.

[0031] The water pump bracket includes an upper frame 31 and a lower frame 32. The upper frame 31 is L-shaped and is buckled on an edge at the bottom of the battery frame 4. The vertical surface is fixed to one side of the battery frame 4 by two horizontal fastening bolts 311, and the bottom surface and the lower frame 32 are fixed by vertical fastening bolts 312; the lower frame 32 is a cylindrical elastic material, which constrains the outer shell of the water pump 33 in the form of a hoop so that the water pump 33 can be hung on the bottom of the battery frame 4.

[0032] The upper frame 31 is composed of an L-shaped plate and a reinforcing plate. The reinforcing plate is perpendicular to the cross section of the L-shaped plate and plays a role in increasing rigidity and strength.

[0033] like Figure 4 As shown, the material of the lower frame 32 is a rubber cushion, which can effectively reduce shock; two through holes are set on the lower frame 32 for installation; two first bushings 321 are set in the through holes to complete the installation by passing bolts.

[0034] like Figure 5 , Figure 6 As shown, the shell of the water pump 33 is composed of a rear cover 331, a middle cylinder 332, and an end cover 333. The rear cover 331 is mainly provided with electric control components, and the middle cylinder 332 is provided with a built-in motor. The mating end faces of the middle cylinder 332 and the end cover 333 include an annular surface and an extension portion extending outward in a petal-shaped and uniformly distributed arc. The base screw holes for accommodating the five bolts are located in the extension portion. The end face of the lower frame 32 on the cylindrical shape close to the end cover 333 is provided with a stop groove, and the extension portion is placed in the stop groove. The end cover 333 is provided with a water inlet 3331, a water outlet 3332, and five bolt holes 3333 evenly distributed on a circle with a diameter of φA and an interval angle of 72°; the end cover 333 can rotate 360°, and the rotation interval angle is 72°. The main function is to adjust according to the arrangement angle of the water outlet 3332 of the water pump 33 as needed.

[0035] like Figure 1 , Figure 7 As shown, the battery frame 4 is composed of a battery compartment 41 , a battery pressure strip 42 , and a second bushing 43 .

[0036] refer to Figure 1 , Figure 7 The present invention utilizes the space below the existing battery frame 4 to install a water pump. One of the functions of the battery frame 4 is to install batteries 5. The batteries 5 are placed in the battery compartment 41, and the battery pressure strips 42 are placed on the batteries 5. Second bushings 43 are installed between the two ends of the battery pressure strips 42 and the upper flanges of the battery compartment 41. The upper flanges of the battery compartment 41, the battery pressure strips 42, and the second bushings 43 are fixed together by bolts, thereby achieving the purpose of fixing the batteries 5; the function of the second bushing is that when the height of the battery 5 changes, only the length of the second bushing 43 needs to be changed accordingly, thereby improving the versatility of the battery compartment 41, so that the height of the bottom of the battery frame 4 can be guaranteed, so that there is enough space below it to install the water pump assembly 3.

[0037] Combined with Figure 1 , Figure 2 , Figure 3 , Figure 7 , Figure 8 , Fig.10 As shown, in order to avoid air resistance in the water channel, the water pump 33 should be arranged as low as possible, but not at the lowest point of the vehicle chassis, so as to avoid that the water pump 33 is not the first thing to be hit when the vehicle chassis collides with a road obstacle. To achieve this goal, the following two technical measures are taken at the same time:

[0038] The first technical measure, such as Fig.10 As shown, the water pump is arranged directly below the battery frame 4, and a certain gap is left between the water pump 33 and the longitudinal through circle of the whole vehicle in the vertical direction, and the gap value is C; a certain gap is also left between the fuel tank bracket 2 and the longitudinal through circle of the whole vehicle in the vertical direction, and the gap value is D; the gap value C must be guaranteed to be greater than the gap value D, so as to calculate the minimum height that the water pump can be set. The water pump 33 and the fuel tank bracket 2 both have a certain gap with the longitudinal through circle of the whole vehicle, which improves the longitudinal passability of the vehicle. Generally, there will be no collision with road obstacles.

[0039] The second technical measure, such as Figure 8 As shown, the height of the water pump 33 is greater than the nearby fuel tank bracket 2, and the height difference is B. When the vehicle collides with a large obstacle on the road, the fuel tank bracket 2 is hit instead of the water pump 33, which also protects the safety of the water pump 33 to a certain extent;

[0040] Combined with Figure 5 , Figure 6 , Fig. 9 As shown, after the position of the water pump is designed to be low enough, the water outlet must pump water at an elevation angle to ensure that the water pump 33 can exert its maximum water pumping performance. The angle between the water outlet pipe axis of the water pump 33 and the horizontal plane should be greater than 0°, which is designed to be 36° in this example. In order to meet this technical requirement, the front cover of the water pump can rotate 360°, and the rotation clearance angle is 72°. The main function is to arrange the angle according to the water outlet 3332 of the water pump 33, and it can be adjusted according to the shape of the water pump and the requirements of not interfering with adjacent components and facilitating assembly and disassembly.

[0041] Assembling the above device on a car according to the position indicated in the drawings of the specification constitutes an embodiment of a car of the present invention.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A hybrid vehicle motor cooling water pump assembly, comprising a vehicle frame, a fuel tank bracket, a water pump assembly, and a battery frame with a built-in battery, characterized in that: The bottom of the fuel tank bracket is lower than the bottom of the frame, and the fuel tank bracket and the battery frame are respectively fixed to the frame by bolts; the water pump assembly includes a water pump and a water pump bracket, the water pump is fixed in the water pump bracket, and the water pump bracket is fixed to the bottom of the battery frame by bolts, and the installation height of the water pump bracket must meet the following requirements: the bottom of the water pump bracket is higher than the bottom of the fuel tank bracket, and the distance between the bottom of the water pump bracket and the longitudinal passing circle of the vehicle>the distance between the bottom of the fuel tank bracket and the longitudinal passing circle of the vehicle.

2. A hybrid vehicle motor cooling water pump assembly as claimed in claim 1, characterized in that: The outer shell of the water pump includes a middle cylinder and an end cover that cooperate with each other and are connected by multiple bolts. The matching end surface includes an annular surface and an extension portion extending outward in a petal-like and equi-arc distribution. The bolt holes for accommodating the multiple bolts are located in the extension portion, and a water outlet channel of the water pump is provided on the wall of the end cover.

3. A hybrid vehicle motor cooling water pump assembly as claimed in claim 2, characterized in that: The plurality is five.

4. A hybrid vehicle motor cooling water pump assembly as claimed in claim 3, characterized in that: The water pump bracket includes an upper frame and a lower frame. The upper frame is L-shaped and is buckled on an edge at the bottom of the battery frame. The vertical surface is fixed to the side surface of the battery frame, and the bottom surface and the lower frame are fixed by bolts. The lower frame is a cylindrical elastic material that constrains the outer shell of the water pump in the form of a hoop. The end surface of the cylindrical elastic material close to the end cover is provided with a stop groove, and the extension portion is placed in the stop groove.

5. A hybrid vehicle motor cooling water pump assembly as described in claim 4, characterized in that: the top of the battery frame is open, the edge of the opening is connected to the battery pressure strip by bolts, a bushing is sleeved on the bolt, one end of the bushing abuts the battery pressure strip, and the other end abuts the edge of the opening.

6. A car, characterized by being equipped with a hybrid car motor cooling water pump assembly as claimed in any one of claims 1 to 5.

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