CN218817041U - Electric pump for electric vehicle power supply thermal management system - Google Patents

Abstract

An electric pump for an electric vehicle power supply thermal management system comprises: the cylindrical cavity surrounds the periphery of the cylindrical surface of the motor, a cylindrical heater which is arranged in the cavity, divides the cavity into an inner circumferential runner and an outer circumferential runner and heats pump liquid is arranged in the cavity, and the outer circumferential surface of the cylindrical cavity is directly contacted with the pump liquid; a plurality of peripheral baffles are arranged in the peripheral flow channel at intervals along the circumference to divide the peripheral flow channel into a plurality of spiral flow channels, and guide fins which are in discontinuous segments are arranged in the central area of the peripheral flow channel; the pump cover is formed with a pump cover and a cylindrical pump cover shell protruding from the outer edge of the pump cover; the outer water jacket is provided with a cylindrical part, and guide fins which are in intermittent segments are integrally formed on the inner wall of the cylindrical part; the periphery of the cavity is enclosed by the cylindrical part of the outer water jacket and the cylindrical pump cover shell. According to the technical scheme, the outer water jacket part is additionally arranged on the basis of the structure of CN217129824U, the guide fins in the discontinuous segments are integrally formed on the cylindrical part of the outer water jacket, and the guide fins in the discontinuous segments are installed and fixed, so that the batch production is realized.

Description

Electric pump for electric vehicle power supply thermal management system

Technical Field

The invention relates to an electric pump for an electric vehicle power supply heat management system, and IPC classes can belong to F04D13/06, F04D29/58 or F04D29/40.

Background

The electric pump is provided with a heating cavity surrounding the periphery of a cylindrical surface of a pump motor, is divided into an inner flow passage and an outer flow passage by a cylindrical heater, is divided into a plurality of spiral flow passages along the circumference by clapboards, is sequentially communicated through a reversing flow passage formed by pump covers at two axial ends and a pump body, the upstream is communicated with a liquid flow conveyed by a pump volute, and the downstream is communicated with a discharge port of the pump to be pumped out after being heated by the cylindrical heater. In order to improve the heat transfer efficiency and simplify the process, in chinese patent CN217129824U, the present applicant designs the electric pump such that the inner and outer peripheral surfaces of the cylindrical heater are in direct contact with the pump liquid, and the outer peripheral partition plate dividing the electric pump into spiral flow channels in the outer peripheral flow channel is designed to be detachably mounted and fixed on the pump body and the cylindrical heater through screws and clamping grooves. In order to further improve and equalize the heat transfer efficiency of the heater, in chinese patent application CN202220182000.8, the present applicant proposed to arrange a flow guiding fin in an interrupted segment in the central region of each segment of the spiral flow channel of the peripheral flow channel for flow guiding, but does not give a specific scheme how to mount and fix the flow guiding fin to achieve mass production. Although the CN217129824U detachably arranges the peripheral partition plate in the peripheral flow channel, so as to integrally form and manufacture the mounting structures such as bolt through holes, clamping grooves, and fasteners, since the flow guide fin added in the center of the peripheral spiral flow channel is an intermittent segment, the structure is discontinuous, so that the mounting structures such as bolt through holes, clamping grooves, and fasteners cannot be integrally formed and manufactured, and the mounting structure surrounding the periphery of the cavity needs to be modified. In addition, the middle section of the detachable partition plate is free and unfixed and is easy to deform, so that the gap between the partition plate and the cylindrical heater is too large, the adjacent spiral flow passages leak too much water, the heat transfer efficiency is reduced, and the deformation of the installed partition plate needs to be manually and carefully corrected to reduce the gap.

The terms and common knowledge are described in CN217129824U, CN202220182000.8 and in the mechanical industry Press 2011 edition SolidWorks parts and assemblies course. The term "cutting" refers to further creating a cutting feature to represent the cutting of the material after the structural design refers to the creation of a boss or a base body feature on the CAD drawing, and the boss feature can be continuously created after the cutting feature is created; the term "splitting" in structural design refers to decomposing a part having features such as bosses, a base body, and a cut-out into a plurality of independent parts by commands such as boolean operations on CAD drawings.

Disclosure of Invention

The electric pump is provided with a heating cavity surrounding the periphery of a cylindrical surface of a pump motor in CN217129824U, a peripheral flow channel in the cavity and a peripheral partition plate integrally formed with a bolt through hole, and the heating cavity, the peripheral flow channel and the peripheral partition plate are detachably mounted and fixed in the peripheral flow channel.

The technical scheme of the invention is that the electric pump for the electric vehicle power supply heat management system comprises:

a cylindrical cavity surrounding the outer periphery of the cylindrical surface of the motor is internally provided with a cylindrical heater which is arranged in the cavity, divides the cavity into an inner peripheral flow passage and an outer peripheral flow passage and heats the pump liquid, and the outer peripheral surface of the cylindrical cavity is directly contacted with the pump liquid;

a plurality of peripheral baffles are arranged in the peripheral flow channel at intervals along the circumference to divide the peripheral flow channel into a plurality of spiral outer flow channels, and guide fins which are in discontinuous segments are arranged in the central area of the outer flow channel;

the pump cover is formed with a pump cover and a cylindrical pump cover shell protruding from the outer edge of the pump cover;

-an outer water jacket having a cylindrical portion, the guide fins being discontinuous segments integrally formed on an inner wall of the cylindrical portion;

the periphery of the cavity is enclosed by the cylindrical part of the outer water jacket and the cylindrical pump cover shell.

According to the technical scheme, on the basis of the structure of CN217129824U, the outer water jacket part is additionally arranged, the guide fins in the discontinuous segments are integrally formed on the cylindrical part of the outer water jacket, the guide fins in the discontinuous segments are installed and fixed, and therefore batch production is achieved.

One of the typical designs of the technical scheme is as follows:

the outer peripheral partition plate is integrally formed on the inner wall of the cylindrical part of the outer water jacket; the outer water jacket forms for the multistage amalgamation, and this multistage presents the multistage that forms for whole along its tube-shape part circumference generating line split of following of outer water jacket before the amalgamation, includes: the cylindrical part is split into a plurality of sections, the peripheral partition plate is split into a plurality of sections, and the guide fin is split into a plurality of sections.

Therefore, compared with the mode that the detachable peripheral partition plate is assembled on the guide fin integrally formed by one integral type outer water jacket, the integral type outer water jacket needs to be sleeved in a rotating mode along the spiral direction of the peripheral partition plate, the manual aiming and positioning are difficult, errors are easy to occur, the installation efficiency is low, the guide fin and the peripheral partition plate are added on the integral type outer water jacket at the same time, the demolding cannot be carried out, the outer water jacket is easy to install in one typical design, the rotary sleeving in the aiming and positioning is not needed, the mold opening and injection molding production can be carried out after the outer water jacket is split into multiple sections, an injection mold is simple and easy to form, and the split multiple sections of the outer water jacket can be sleeved in the inner periphery of the pump cover shell directly during installation; the peripheral partition plate and the cylindrical part of the cylindrical outer water jacket with good rigidity are all split into a plurality of sections and then are integrally formed, and meanwhile the problem that the heat transfer efficiency is reduced due to overlarge gaps between the detachable spiral partition plate and the cylindrical heater caused by deformation of the detachable spiral partition plate is solved.

One of the further designs is: the interior week of pump casing is followed split department interval sets up multichannel direction muscle, forms the multistage fan-shaped groove, corresponds the multistage of outer water jacket tube-shape part split respectively, and separately in split department with correspond the direction muscle and appear to get rid of for the material of interference before the amalgamation, the interior perisporium of the multistage laminating pump casing shell of outer water jacket tube-shape part split is gone into the fan-shaped groove that the multistage corresponds respectively, the amalgamation is the assembly. The positioning of the multi-section fan-shaped grooves which are easy to observe through the sight line is realized, and the multi-section split outer water jacket can be clamped into the pump cover shell more easily.

A further optimized design of one of the designs is: the removed material is slightly more than the interfered material, and the side face of the cross section formed by removing the side rib or the guide rib is provided with the side rib, so that the plurality of sections of the split cylindrical part of the outer water jacket slightly interfere with the fan-shaped groove in the circumferential direction and are easy to clamp, and the assembled outer water jacket and pump cover assembly is firmer.

The second design is as follows: a plurality of guide wide ribs are arranged at intervals along the split part of the inner periphery of the pump cover shell to form a plurality of sections of fan-shaped grooves which respectively correspond to the plurality of sections of the split outer water jacket cylindrical part, and the materials which are respectively interfered with the corresponding guide wide ribs at the split part before being spliced are removed; the direction broad rib forms the broad rib platform towards pump housing shell open-ended one end, the multistage of tube-shape part split extends separately along circumference both sides and stridees across the broad rib platform and forms the welding arm, the welding arm sets up welding muscle or broad rib platform towards one side of welding arm towards one side of broad rib platform, the interior perisporium of the multistage laminating pump housing shell of outer water tube-shaped part split blocks respectively into the sector groove that the multistage corresponds, welding arm and broad rib platform pass through welding muscle welded fastening. Therefore, the external water jacket and the pump cover are installed most firmly, the positioning is realized through the multi-section fan-shaped grooves which are easy to observe by sight lines, and the multi-section split external water jacket is clamped into the shell of the pump cover more easily.

The above design is preferably: the split multiple sections are 3 sections, and the method specifically comprises the following steps:

the section A of the outer water jacket, the section B of the outer water jacket and the section C of the outer water jacket;

-barrel section a, barrel section B, barrel section C;

-a peripheral partition a section, a peripheral partition B section, a peripheral partition C section;

the guide fin section A, the guide fin section B and the guide fin section C;

and:

the section A of the peripheral partition plate, the section A of the guide fin and the section A of the cylindrical part are integrally formed to form a section A of the outer water jacket;

the section B of the peripheral partition plate, the section B of the guide fin and the section B of the cylindrical part are integrally formed to form a section B of the outer water jacket;

the section C of the peripheral partition plate, the section C of the guide fin and the section C of the cylindrical part are integrally formed to form a section C of the outer water jacket;

the multiple guide ribs or guide wide ribs are 3, and the formed multi-section fan-shaped grooves are 3 sections.

The outer water jacket is split into 3 sections, the die sinking quantity is moderate, and the process and the design are easy.

The second typical design of the technical scheme is as follows:

the outer circumferential partition plate is integrally formed on the inner wall of the cylindrical part of the outer water jacket;

the outer water jacket is formed by splicing two sections, and the two sections are divided into two sections which are formed by integrally splitting the outer water jacket along a circumferential generatrix of a cylindrical part of the outer water jacket before splicing, namely an outer water jacket section E and an outer water jacket section F, and the outer water jacket comprises:

-the mantle-like part of the outer water is split into two sections: a barrel section E, a barrel section F,

-the peripheral partition is split into two sections: a peripheral clapboard E section and a peripheral clapboard F section,

the guide fin is split into two sections: a guide fin section E and a guide fin section F,

the section E of the peripheral partition plate, the section E of the guide fin and the section E of the cylindrical part are integrally formed to form the section E of the outer water jacket,

the section F of the peripheral partition plate, the section F of the guide fin and the section F of the cylindrical part are integrally formed to form the section F of the outer water jacket;

the pump body is characterized by further comprising a pump body with a bottom plate, a limiting hole is formed in one side, facing the cavity, of the bottom plate, a limiting pin is arranged on one side, facing the bottom plate, of the E section of the outer water jacket and the F section of the outer water jacket, the limiting hole and the limiting pin are correspondingly arranged, a pair of first buckles is arranged at the splicing position on one side, facing away from the bottom plate, of the E section of the cylindrical part of the E section of the outer water jacket, a pair of second buckles is arranged at the splicing position on one side, facing away from the bottom plate, of the F section of the cylindrical part of the F section of the outer water jacket, the limiting pin is aligned with the limiting hole, the first buckles and the second buckles are mutually clamped, and the E section of the outer water jacket and the F section of the outer water jacket are spliced into a whole outer water jacket which is arranged on the bottom plate.

Contrast an integral outer water jacket integrated into one piece water conservancy diversion fin and assemble detachable periphery baffle: the integral outer water jacket needs to be sleeved in a manner of rotating along the spiral direction of the peripheral partition plate, manual aiming and positioning are difficult, errors are easy to occur, the installation efficiency is low, and demolding cannot be performed when the guide fins and the peripheral partition plate are added on the integral outer water jacket at the same time; the second design is easy to install the outer water jacket, does not need to be aimed, positioned and rotationally sleeved, the outer water jacket can be split into two sections, the mold can be opened for injection molding production, the injection mold is simple and easy to form, and the outer water jacket is clamped into a whole through the buckles during installation and then is inserted into the bottom plate limiting hole through the limiting pin; in addition, the outer peripheral partition plate and the cylindrical part of the cylindrical outer water jacket with good rigidity are split into two sections and then are integrally formed, so that the problem that the heat transfer efficiency is reduced due to overlarge gaps between the detachable spiral partition plate and the cylindrical heater caused by deformation of the detachable spiral partition plate is solved.

The design structure has simplified process, is convenient for mold opening injection molding mass production, and eliminates the potential problem of heat transfer efficiency reduction caused by excessive water leakage of adjacent runners.

The technical scheme and the effect of each specific design are detailed in the specific implementation mode.

Drawings

FIG. 1 is a perspective view of an electric pump according to embodiment 1 of the present invention;

FIG. 2 is an exploded schematic view of the electric pump of FIG. 1;

FIG. 3 is a schematic perspective view of the pump housing, the outer water jacket and the body of the electric pump of FIG. 1, separated (the shaded guide fins are shown in phantom);

FIG. 4 is a schematic main cross-sectional view of the electric pump of FIG. 1;

FIG. 5 is a perspective view of the pump housing of the electric pump of embodiment 2;

FIG. 6 is a three-stage schematic perspective view of the external water jackets A, B, C of the electric pump of embodiment 2 (the shaded peripheral baffles and guide fins are shown in phantom);

FIG. 7 is an enlarged view I of a portion of FIG. 6;

FIG. 8 isbase:Sub>A schematic cross-sectional view of an electric pump according to embodiment 2 of the present invention (base:Sub>A cross-sectional view corresponding to the section A-A of FIG. 4)

FIG. 9 is a partial enlarged view II of FIG. 8;

FIG. 10 is a perspective view of the pump housing of the electric pump according to embodiment 3 of the present invention;

FIG. 11 is a schematic perspective view of the external water jackets A, B and C of the electric pump according to the embodiment 3;

FIG. 12 is a partial enlarged view III of FIG. 11;

FIG. 13 is a schematic perspective view of a pump cover and outer water jacket combination of the electric pump according to embodiment 3;

FIG. 14 is a partial enlarged view IV of FIG. 15;

FIG. 15 is a cross-sectional view of the combination of the pump housing and the external water jacket of the electric pump of embodiment 3;

FIG. 16 is a perspective view of the pump body of the electric pump according to embodiment 4 of the present invention

FIG. 17 is a schematic perspective view of the two-sectional E and F outer water jackets of the electric pump according to embodiment 4 of the present invention (the shaded outer circumferential partition plates and guide fins are shown in dotted lines);

fig. 18 is a perspective view showing a combination of the pump body and the external water jacket of the electric pump according to embodiment 4.

Reference numerals are as follows:

600 cavity, 610 inner circumference flow channel, 630 outer circumference flow channel and 120 cylindrical heater;

130 outer water jacket, 131 cylindrical part, 132 outer periphery clapboard, 133 guide fin, 134 side rib, 135 'welding arm, 136' welding rib;

510 pump covers, 511 pump covers, 512 pump cover shells, 513 guide ribs, 514 fan-shaped grooves, 513 'guide wide ribs and 515' wide rib platforms;

130a section A of an outer water jacket, 131a section A of a cylindrical part, 132a section A of a peripheral partition plate and 133a section A of a guide fin;

130B section of outer water jacket B, 131B section of cylindrical part B, 132B section of peripheral partition B, 133B section of guide fin B;

130C section C of the outer water jacket, 131C section C of the cylindrical part, 132C section C of the peripheral partition plate and 133C section C of the guide fin;

130E external water jacket E section, 131E cylindrical part E section, 132E peripheral partition plate E section, 133E guide fin E section, 137 first buckle;

a 130F outer water jacket F section, a 131F cylindrical part F section, a 132F outer periphery partition plate F section, a 133F guide fin F section and a 138 second buckle;

139 a limit pin;

530 pump body, 531 bottom plate, 532 spacing hole.

Detailed Description

In order to facilitate an understanding of the present invention, the present invention will be described more fully with reference to the following examples.

Example 1

The electric pump of the embodiment is an improved design combined with the embodiments in the specifications of the prior applications CN217129824U and CN202220182000.8 of the applicant in the background art, and the main improvement lies in a mounting and matching structure surrounding the periphery of the cavity, and aims to arrange the guide fins in the form of the discontinuous segments and solve the problem that the guide fins cannot be integrally formed like a peripheral partition plate to manufacture bolt through holes, clamping grooves, buckles and other similar mounting structures to realize mounting and fixing due to the discontinuous structure, so that mass production is realized.

As shown in fig. 1-4, the electric pump comprises: a cover-shaped casing, i.e., a pump cover 510, which is formed with a pump cover 511 and a cylindrical pump cover casing 512 protruding from the outer edge of the pump cover and has a cover-shaped opening; a pump body 530 formed with a substantially annular bottom plate 531 and a cylindrical inner housing projecting from an inner ring edge of the bottom plate; an outer water jacket 130 formed with a cylindrical portion 131 and guide fins 133 integrally formed on an inner wall of the cylindrical portion, arranged in intermittent segments; the motor, its impeller of axial drive drives the pump liquid in the volute; a cavity 600 surrounding the outer periphery of the cylindrical surface of the motor, the cavity is in the shape of an axial cylinder of the motor and is formed by directly and peripherally enclosing a pump cover 510 and a pump body 530 which are positioned at two ends of the motor, wherein, the cylindrical part 131 of the outer water jacket is closely attached to the inner wall of the cylindrical pump cover shell 512, and the two cavities surround the cavity 600 at the outer periphery; a cylindrical heater 120, which is internally installed in the cavity of the chamber 600 to heat the pump liquid, is axially located between the outer circumference and the inner circumference of the chamber 600 along the motor, and divides the cavity of the chamber into an inner circumference flow passage 610 and an outer circumference flow passage 630;

three spaced inner circumferential partitions are circumferentially arranged in the inner circumferential flow channel 610 to divide the inner circumferential flow channel 610 into three sections of spiral inner flow channels which circulate around the inner circumference of the cylindrical heater 120;

three spaced peripheral baffles 132 are detachably arranged in the peripheral flow channel 630 along the circumference, the peripheral flow channel 630 is divided into three spiral outer flow channels which are wound around the periphery of the cylindrical heater 120, and the guide fins 133 which are in the form of intermittent segments are arranged in the central areas of the three spiral outer flow channels for guiding flow;

the outer circumferential surface of the cylindrical heater 120 is in direct contact with the pump liquid of the outer flow passage, and the inner circumferential surface is in direct contact with the pump liquid of the inner flow passage;

a reversing flow channel formed by a bottom plate 531 of the pump body 530 at one axial end of the cavity 600, wherein the downstream of each section of spiral inner flow channel in the inner peripheral flow channel 610 sequentially leads to the upstream of each section of spiral outer flow channel in the outer peripheral flow channel 630;

the other end of the cavity 600 in the axial direction is a reversing flow channel formed by a pump cover 511 of the pump cover 510, and the downstream of each section of spiral outer flow channel in the outer periphery flow channel 630 is sequentially communicated with the upstream of each section of spiral inner flow channel in the inner periphery flow channel 610;

at the pump cover 511 end of the cavity 600, the flow paths formed by all the flow paths lead to the discharge port of the electric pump at the downstream of the spiral outer flow path at the most downstream section and lead to the volute at the upstream of the spiral inner flow path at the most upstream section;

the pump liquid output by the volute chamber passes through the whole flow path and is discharged through the discharge port of the electric pump.

In the process of installing the electric pump, after the three detachable peripheral partition plates 132 are clamped and fixed on the peripheral surface of the cylindrical heater 120, the external water jacket 130 is held by a hand to align the three guide fins 133 with the three external flow passages, and the three external flow passages are rotatably sleeved along the spiral direction of the three external flow passages.

According to the design, on the basis of the structure of CN217129824U, the outer water jacket part is additionally arranged, the guide fins in the discontinuous segments are integrally formed on the cylindrical part of the outer water jacket, the guide fins in the discontinuous segments are fixed on the outer water jacket, and the outer water jacket part is further fixedly arranged on the electric pump, so that the mass production is realized.

Example 2

The electric pump of this embodiment is a variant of embodiment 1, as shown in fig. 5-9, the main design differences being:

the outer water jacket 130 is not only formed with a cylindrical part 131 and guide fins 133 integrally formed on the inner wall of the cylindrical part, but also formed with an outer partition 132 integrally formed on the inner wall of the cylindrical part, and based on a forming and manufacturing process, the outer water jacket 130 in an integral form is divided into three sections along a circumferential generatrix of the cylindrical part 131, namely an outer water jacket A section 130a, an outer water jacket B section 130B and an outer water jacket C section 130C, and the three sections are spliced into a whole outer water jacket 130. The specific splitting operation can be realized by Boolean operation of CAD design software such as CATIA, and the splitting further comprises the following steps:

the outer water jacket cylindrical portion 131 is split into a cylindrical portion a section 131a, a cylindrical portion B section 131B, a cylindrical portion C section 131C;

the outer peripheral partition 132 is divided into an outer peripheral partition a section 132a, an outer peripheral partition B section 132B, and an outer peripheral partition C section 132C;

the guide fin 133 is divided into a guide fin a section 133a, a guide fin B section 133B, and a guide fin C section 133C;

the outer water jacket A section 130a is formed by integrally forming the outer peripheral partition plate A section 132a, the guide fin A section 133a and the cylindrical part A section 131 a;

the outer water jacket B section 130B is formed by integrally forming the outer peripheral partition plate B section 132B, the guide fin B section 133B and the cylindrical part B section 131B;

the outer peripheral partition C section 132C, the guide fin C section 133C, and the cylindrical portion C section 131C are integrally formed to make the outer water jacket C section 130C.

Three guide ribs 513 are arranged at intervals along the split position of the outer water jacket 130 on the inner periphery of the pump cover shell 512 to form three sections of fan-shaped grooves 514, the three sections respectively correspond to the three sections 131a, 131b and 131c of the split outer water jacket cylindrical part 131, the three sections respectively present interference removal with the corresponding guide ribs 513 at the split position of the three sections, specifically, the removal of solid materials can be realized by removing the solid materials through CAD design software operation such as SolidWorks, the removed materials are better than the interference materials, the cut section or the side surface of the guide ribs 513 can be provided with side ribs 134 (shown in figures 7 and 9), the three sections 131a, 131b and 131c of the split outer water jacket cylindrical part are respectively clamped into the three sections of corresponding fan-shaped grooves 514 by adhering to the inner peripheral wall of the pump cover shell 512 and are spliced with the pump cover shell 512 to form a combined body, so that the three sections 130a, 130b and 130c of the split outer water jacket, the pump cover 510 and the pump cover shell 512 are spliced together into a complete outer water jacket and pump cover combined body, and the combined body is formed by slightly interference fit through the arrangement of the side ribs 134 around the outer water jacket 600.

Therefore, compared with the embodiment 1, the guide fin integrally formed by one integral type outer water jacket is provided with the detachable outer peripheral partition plate, the integral type outer water jacket needs to be sleeved in a rotating mode along the spiral direction of the outer peripheral partition plate, the manual aiming and positioning are difficult, mistakes are easy to occur, the installation efficiency is low, the guide fin and the outer peripheral partition plate which are added to the integral type outer water jacket at the same time cannot be demoulded, the outer water jacket is easy to install, the aiming and positioning are not needed to be sleeved in a rotating mode, the outer water jacket is split into three sections, the mold opening injection production can be achieved, the injection mold is simple and easy to form, and the split three sections of the outer water jacket can be directly clamped into the three sections of the outer water jacket along the three sections of the fan-shaped grooves on the inner periphery of the pump cover shell during installation; and the peripheral partition plate and the cylindrical part of the cylindrical outer water jacket with good rigidity are split into three sections and then are integrally formed, so that the problem that the heat transfer efficiency is reduced due to overlarge gaps between the detachable spiral partition plate and the cylindrical heater caused by deformation of the detachable spiral partition plate is solved.

In the modified design, the cut section is not provided with the side ribs 134, the material cut at the split part of each of the three split sections of the outer water sleeve-shaped part can be slightly less than the material which is interfered with the corresponding guide ribs before the split, a proper interference fit is formed in the corresponding fan-shaped groove clamped into the pump cover shell, and the outer water sleeve and the pump cover can be firmly spliced and installed into a whole. The amount of ablation may also be as much or slightly more than the intervening material, with a moderate transition or clearance fit formed in the snap-in corresponding scallops.

Three sections of the split outer water jacket cylindrical part and three corresponding sections of fan-shaped grooves are respectively designed to be long, medium and short in circumferential length, and thus better mistake-proofing installation can be realized.

In other modified designs, the inner periphery of the pump cover shell is not provided with the guide ribs and three segments of fan-shaped grooves, the outer water jacket is only disassembled without cutting off materials which are interfered with the guide ribs and manufacturing and splicing the materials in segments, the guide fins, the outer periphery partition plate and the outer water jacket segment can be conveniently formed integrally, and the trouble that the outer water jacket needs to be aligned, rotated, sleeved and installed in the embodiment 1 is also eliminated. Under the condition, the three sections of the split cylindrical part of the outer water jacket can be accurately limited by forming gaps at the positions, which are opposite to the rib-shaped partition plates of the pump cover.

According to the length of the distance between the guide fins arranged in each outer flow passage and extending along the upstream and downstream, the split outer water jacket can be flexibly adjusted into two, four or more sections, the split outer water jacket can be suitable for guide fins or partition plates with more complicated parting surfaces and less split sections, which cause difficult die opening, due to longer upstream and downstream extending distances or more complicated shapes, and the number of dies and parts can be reduced by splitting the split outer water jacket into two sections.

Example 3

The electric pump of this embodiment is a variant of embodiment 2, the main design differences being:

as shown in fig. 10-15, three guide ribs 513 arranged at intervals along the split portion on the inner periphery of the pump housing case 512 are widened into guide wide ribs 513', three segments of fan-shaped grooves 514 are also formed, the three segments respectively correspond to the three split segments of the outer water jacket cylindrical portion, the three segments respectively show interference removal with the corresponding guide wide ribs 513' at the split portion, a wide rib platform 515' is formed at one end of the guide wide ribs 513' facing the cover-shaped opening of the pump housing case 512, the three split segments of the outer water jacket cylindrical portion respectively extend across the wide rib platform 515' along the two circumferential sides to form welding arms 135', the welding arms are provided with welding ribs 136' (as shown in fig. 12 and 14) at one side of the welding arms facing the wide rib platform 515', and the welding arms 135' and the wide rib platform 525' are fixed by welding ribs 136 '. Thus, the outer water jacket 130 is most firmly mounted with the pump cover 510.

The weld rib 136' on one side of the weld arm 135' may also be provided on the broad rib platform 515'.

Example 4

The electric pump of this embodiment is a variant of embodiment 1, the main design differences being:

as shown in fig. 16 to 18, the outer water jacket 130 is formed with not only the cylindrical portion 131 and the guide fins 133 integrally formed on the inner wall of the cylindrical portion, but also the outer circumferential partition 132 integrally formed on the inner wall of the cylindrical portion, and based on the forming and manufacturing process, the outer water jacket 130 in the form of a whole is divided into two sections along the circumferential generatrix of the cylindrical portion 131, namely, an outer water jacket E section 130E and an outer water jacket F section 130F, and the two sections are combined into a whole outer water jacket 130. The specific splitting operation can be realized through Boolean operation of CAD design software such as CATIA (computer-aided three-dimensional Interactive application), and the splitting further comprises the following steps:

the outer water jacket cylindrical portion 131 is split into a cylindrical portion E section 131E, a cylindrical portion F section 131F;

the peripheral partition 132 is split into a peripheral partition E section 132E and a peripheral partition F section 132F;

the guide fin 133 is divided into a guide fin E section 133E and a guide fin F section 133F;

the outer water jacket E section 130E is formed by integrally forming an outer peripheral partition plate E section 132E, a guide fin E section 133E and a cylindrical part E section 131E;

the outer peripheral partition plate F section 132F, the guide fin F section 133F and the cylindrical portion F section 131F are integrally formed to make the outer water jacket F section 130F.

A limiting hole 532 is formed in one side, facing the cavity of the cavity 600, of the bottom plate 531 of the pump body 530, a limiting pin 139 is arranged on one side, facing the bottom plate 531, of the outer water jacket E section 130E and the outer water jacket F section 130F, the limiting hole 532 and the limiting pin 139 are correspondingly arranged, a pair of first buckles 137 are arranged at two-section splicing positions on one side, facing the pump cover 511 and departing from the bottom plate 531, of the cylindrical part E section 131E of the outer water jacket E section, a pair of second buckles 138 are arranged at two-section splicing positions on the same side of the cylindrical part F section 131F of the outer water jacket F section, the limiting pin 139 is aligned with the limiting hole 532, the first buckles 137 and the second buckles 138 are mutually clamped, and the outer water jacket E section 130E and the outer water jacket F section 130F are spliced into a whole piece of the outer water jacket 130 which is mounted on the bottom plate 531.

Thus, compared with the embodiment 1, the guide fin integrally formed by one integral type outer water jacket is provided with the detachable peripheral partition plate, the integral type outer water jacket needs to be sleeved in a rotating mode along the spiral direction of the peripheral partition plate, the manual aiming and positioning are difficult, the error is easy, the installation efficiency is low, the guide fin and the peripheral partition plate which are added on the integral type outer water jacket at the same time cannot be demoulded, the outer water jacket is easy to install, the rotary sleeving is carried out without aiming and positioning, the outer water jacket can be split into two sections, the mold opening injection production can be carried out, the injection mold is simple and easy to form, and the outer water jacket is clamped into a whole piece through the buckle and then is inserted into the limiting hole of the bottom plate through the limiting pin during installation; and the peripheral baffle and the cylindrical part of the cylindrical outer water jacket with good rigidity are split into two sections and then are integrally formed, so that the problem that the heat transfer efficiency is reduced due to overlarge gaps between the detachable spiral baffle and the cylindrical heater caused by deformation of the detachable spiral baffle is solved.

According to the length of the extending distance of the guide fin arranged in each outer flow passage along the upstream and downstream, the split outer water jacket can be flexibly adjusted into three, four or more sections, the split outer water jacket can adapt to the guide fin or the partition plate which has a complicated parting surface and is difficult to split two sections of molds due to the long extending distance along the upstream and downstream or the complicated shape, and the number of the molds and parts can be reduced by splitting the guide fin or the partition plate into two sections.

The above-mentioned embodiments and design examples only express several embodiments of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention.

Claims (10)

1. An electric pump for an electric vehicle power supply thermal management system, comprising:

-a cylindrical cavity (600) surrounding the outer circumference of the cylindrical surface of the motor, a cylindrical heater (120) being built in the cavity to divide the cavity into an inner circumferential flow channel (610) and an outer circumferential flow channel (630) and heating the pump liquid, the outer circumferential surface of the cylindrical cavity being in direct contact with the pump liquid;

-a plurality of peripheral baffles (132) are circumferentially spaced within the peripheral flow channel (630) to divide the peripheral flow channel (630) into a plurality of spiral flow channels;

-a pump cap (510) formed with a pump cap (511) and a cylindrical pump cap housing (512) protruding from an outer edge of the pump cap;

the method is characterized in that:

-the central area of the several helical flow channels is provided with guide fins (133) in the form of interrupted segments;

-comprising an outer water jacket (130) having a cylindrical portion (131) with guide fins (133) integrally formed on the inner wall of the cylindrical portion;

-the outer periphery of the chamber (600) is enclosed by the cylindrical part (131) and the cylindrical pump housing shell (512).

2. The electric pump according to claim 1, characterized in that:

-the peripheral partition (132) is integrally formed on the inner wall of the cylindrical portion (131) of the outer water jacket (130);

-the outer water jacket (130) is formed by splicing a plurality of sections, and the plurality of sections are formed by splitting the outer water jacket (130) along a circumferential generatrix of the cylindrical part (131) before splicing, and the outer water jacket comprises: the cylindrical portion (131) is divided into a plurality of segments, the outer circumferential partition plate (132) is divided into a plurality of segments, and the guide fin (133) is divided into a plurality of segments.

3. The electric pump according to claim 2, characterized in that:

interior week of pump housing shell (512) is followed split department interval sets up multichannel direction muscle (513), forms multistage sector groove (514), corresponds the multistage of outer water jacketed tube-shape part (131) split respectively, and is in separately split department with correspond direction muscle (513) in it gets rid of for the material of interference to present before the amalgamation, the multistage laminating of outer water jacketed tube-shape part (131) split the interior perisporium of pump housing shell (512) blocks into the sector groove (514) that the multistage corresponds respectively, and the amalgamation is the assembly.

4. The electric pump according to claim 3, characterized in that:

the removed material is more than the interfered material, and the cross section formed by the removal is provided with a side rib (134) or the side surface of the guide rib is provided with the side rib (134).

5. The electric pump of claim 2, wherein:

a plurality of guide wide ribs (513 ') are arranged at intervals on the inner periphery of the pump cover shell (512) along the split part to form a plurality of sections of fan-shaped grooves (514), the fan-shaped grooves correspond to the plurality of sections split by the cylindrical part (131) of the outer water jacket respectively, and the guide wide ribs (513') and the split parts respectively present interference material removal before the split parts are split; the guide wide rib (513 ') is towards one end of an opening of the pump cover shell (512) to form a wide rib platform (515'), the multiple sections of the split cylindrical part (131) extend along the two circumferential sides to cross the wide rib platform (515 ') to form a welding arm (135'), the multiple sections of the split cylindrical part (131) of the outer water jacket are attached to the inner circumferential wall of the pump cover shell (512) and are clamped into the multiple sections of corresponding fan-shaped grooves (514), and the welding arm (135 ') and the wide rib platform (515') are welded and fixed.

6. The electric pump of claim 5, wherein:

the welding arm (135 ') is provided with a welding rib (136') towards one side of the broad rib platform (515 ') or the broad rib platform (515') is provided with a welding rib (136 ') towards one side of the welding arm (135').

7. The electric pump according to any one of claims 2, 3 and 5, wherein:

the "more" of the multiple segments is 3; thus, they are specifically:

-an outer water jacket a section (130 a), an outer water jacket B section (130B), an outer water jacket C section (130C);

-a bowl a section (131 a), a bowl B section (131B), a bowl C section (131C);

-a peripheral bulkhead a section (132 a), a peripheral bulkhead B section (132B), a peripheral bulkhead C section (132C);

-guide fin a section (133 a), guide fin B section (133B), guide fin C section (133C);

and:

-the peripheral partition plate a section (132 a), guide fin a section (133 a) and cylindrical portion a section (131 a) are integrally formed to make an outer water jacket a section (130 a);

-the peripheral partition B section (132B), guide fin B section (133B) and cylindrical portion B section (131B) are integrally formed into an outer water jacket B section (130B);

-the outer peripheral partition plate C-section (132C), the guide fin C-section (133C) and the cylindrical portion C-section (131C) are integrally formed into an outer water jacket C-section (130C).

8. The electric pump according to claim 1, characterized in that:

-the peripheral partition (132) is integrally formed on the inner wall of the cylindrical portion (131) of the outer water jacket (130);

-the outer water jacket (130) is split into two sections, and the two sections are split into two sections along a circumferential generatrix of the cylindrical part (131) of the outer water jacket (130) before being split: an outer water jacket section (130E), an outer water jacket section (130F), comprising:

-the barrel portion (131) is split into two sections: a barrel section E (131E), a barrel section F (131F);

-the peripheral partition (132) is split into two sections: a peripheral bulkhead E section (132E), a peripheral bulkhead F section (132F);

-the guide fin (133) is split into two sections: a guide fin section E (133E) and a guide fin section F (133F);

the section E (132E) of the outer peripheral partition plate, the section E (133E) of the guide fins and the section E (131E) of the cylindrical part are integrally formed to form the section E (130E) of the outer water jacket;

the section (132F) of the outer peripheral partition plate, the section (133F) of the guide fin and the section (131F) of the cylindrical part are integrally formed to form the section (130F) of the outer water jacket.

9. The electric pump of claim 8, wherein:

the water jacket structure further comprises a pump body (530) with a bottom plate (531), a limiting hole (532) is formed in one side, facing the cavity of the cavity (600), of the bottom plate (531), a limiting pin (139) is arranged on one side, facing the bottom plate (531), of the outer water jacket E section (130E) and the outer water jacket F section (130F), the limiting hole (532) and the limiting pin (139) are correspondingly arranged, a pair of first buckles (137) is arranged at the splicing position on one side, facing away from the bottom plate (531), of the cylindrical part E section (131E), a pair of second buckles (138) is arranged at the splicing position on one side, facing away from the bottom plate (531), of the cylindrical part F section (131F), the limiting pin (139) is aligned with the limiting hole (532), the first buckles (137) and the second buckles (138) are mutually clamped, and the outer water jacket E section (130E) and the outer water jacket F section (130F) are spliced into a whole outer water jacket (130) and mounted on the bottom plate (531).

10. The electric pump according to any of claims 3 and 5, characterized in that: the "poly" of the plurality is 3.

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