CN110203107B - Medium filter for electric automobile thermal management system convenient to change filter core - Google Patents
Medium filter for electric automobile thermal management system convenient to change filter core Download PDFInfo
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- CN110203107B CN110203107B CN201910614572.1A CN201910614572A CN110203107B CN 110203107 B CN110203107 B CN 110203107B CN 201910614572 A CN201910614572 A CN 201910614572A CN 110203107 B CN110203107 B CN 110203107B
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- 230000008859 change Effects 0.000 title description 2
- 239000007788 liquid Substances 0.000 claims abstract description 68
- 238000004062 sedimentation Methods 0.000 claims abstract description 39
- 239000010865 sewage Substances 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 38
- 229910001220 stainless steel Inorganic materials 0.000 claims description 21
- 239000010935 stainless steel Substances 0.000 claims description 21
- 239000012535 impurity Substances 0.000 claims description 18
- 230000017525 heat dissipation Effects 0.000 claims description 13
- 238000001914 filtration Methods 0.000 claims description 10
- 230000001502 supplementing effect Effects 0.000 claims description 10
- 230000000087 stabilizing effect Effects 0.000 claims description 6
- 239000012780 transparent material Substances 0.000 claims description 4
- 238000005192 partition Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 7
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 239000012080 ambient air Substances 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000005341 toughened glass Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
- B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention discloses a medium filter for an electric automobile thermal management system, which is convenient for replacing a filter element, and the medium filter comprises a base, wherein the base is downwards connected with a sedimentation cup in a threaded manner; a main passage is horizontally arranged in the base, the main passage is connected in series with a circulating pipeline of the electric automobile thermal management system through a medium inlet and a medium outlet of the main passage, a filter element is clamped in the sedimentation cup, an annular cavity is defined between the side wall of the filter element and the inner wall of the sedimentation cup, and an inlet part of the main passage is communicated with the annular cavity; the inner cavity of the filter element is communicated with the outlet part of the main passage upwards; the bottom surface of the filter element and the inner wall of the sedimentation cup below the filter element enclose a sedimentation cavity, and the sedimentation cavity is downwards connected with a sewage discharging structure; an inlet plug valve is arranged on a valve seat of an inlet part of the main passage, and an outlet plug valve is arranged on a valve seat of an outlet part. The invention can prevent excessive medium outflow during filter element replacement, reduce the cost of replenishing liquid, and avoid frequent replenishment of liquid medium and increase of maintenance workload. The invention enables the pollution discharge and the back flush to be carried out integrally, and avoids the blockage of the filter element.
Description
Technical Field
The invention relates to the technical field of electric automobiles, in particular to a medium filter in a thermal management system of an electric automobile.
Background
In recent years, research and development and application of new energy automobiles are promoted worldwide due to the gradual exhaustion of fossil energy and the increasingly prominent problem of environmental pollution. New energy automobiles include electric automobiles, hydrogen fuel automobiles, solar automobiles, and the like, and electric automobiles are one of the main aspects of new energy automobiles.
The new energy automobile market in China rapidly develops, and along with the continuous progress of the power battery technology, the electric automobile also realizes rapid development. The electric automobile needs to control and regulate the internal temperature of the whole automobile and the working environment temperature of the parts through the thermal management system so as to ensure that the parts can work normally and provide comfortable riding environment for passengers.
The thermal management system of the electric automobile generally comprises a heating and ventilation system, a battery thermal management system and a motor thermal management system. The heat management system uses a water pump as power for driving medium circulation, and comprises a battery heat dissipation water pump and a motor heat dissipation water pump. An imbalance of the medium may occur in the system on both sides of the pump, resulting in too little medium on one side of the pump. When the heat management system adopts a water cooling mode, the system generally comprises a medium for cooling, a magnetic water pump and a circulating pipeline for medium circulation. The medium used in the thermal management system (pure water, 50% pure water and 50% ethylene glycol mixture or 50% pure water and 50% propylene glycol mixture) inevitably mixes with some impurities during transportation and storage, and these impurities may cause poor cooling effect of the thermal management system or even damage other devices in the thermal management system.
In order to ensure the stability and reliability of the thermal management system, it is necessary to provide a medium filter for filtering impurities in the thermal management system to ensure the cleanliness of the system, and patent 2017207568382 entitled to the applicant discloses a medium filter suitable for an electric automobile thermal management system, but the medium filter is inconvenient to replace a filter element and discharge sewage, has no function of exhausting gas in a medium, has no function of supplementing liquid and keeping constant pressure, and cannot avoid the situation that the medium in a circulation pipeline on one side of a water pump for battery heat dissipation is too small.
Disclosure of Invention
The invention aims to provide a medium filter for an electric automobile thermal management system, which is convenient for replacing a filter element, and can prevent excessive medium outflow during the replacement of the filter element, so that pollution discharge and back flushing are integrally carried out.
In order to achieve the above purpose, the invention provides a medium filter for an electric automobile thermal management system, which is convenient for replacing a filter element, wherein the electric automobile thermal management system is provided with a circulating pipeline, the top end of the circulating pipeline is connected with an expansion water tank for a battery, and the expansion water tank for the battery is filled with a liquid medium; a battery heat dissipation water pump is arranged on the circulating pipeline, and the flowing direction of the liquid medium is taken as the downstream direction;
the medium filter for the electric automobile thermal management system, which is convenient for replacing the filter element, comprises a base, wherein the base is downwards connected with a sedimentation cup in a threaded manner; a main passage is horizontally arranged in the base, a medium inlet is arranged at the upstream end of the main passage, and a medium outlet is arranged at the downstream end of the main passage; the main passage is connected in series with a circulating pipeline of the electric automobile heat management system through a medium inlet and a medium outlet of the main passage, and the medium inlet is positioned at the downstream of the battery heat dissipation water pump and is adjacent to the battery heat dissipation water pump;
the main passage comprises an inlet part and an outlet part, and a partition plate is arranged between the inlet part and the outlet part; a cylindrical filter element is clamped in the sedimentation cup, an annular cavity is formed between the side wall of the filter element and the inner wall of the sedimentation cup, and an inlet part of the main passage is communicated with the annular cavity; the inner cavity of the filter element is communicated with the outlet part of the main passage upwards;
the bottom end of the filter element is clamped with the inner side wall of the sedimentation cup through a connecting rib, a sedimentation cavity for storing impurities is formed by the bottom surface of the filter element and the inner wall of the sedimentation cup below the filter element, and a sewage draining structure is downwards connected with the sedimentation cavity and is a plug or a sewage draining valve;
the inlet part and the outlet part of the main passage are respectively provided with a valve seat, the valve seat of the inlet part is provided with an inlet plug valve, and the valve seat of the outlet part is provided with an outlet plug valve.
An inlet and an outlet are arranged at the outlet part of the main passage at the downstream side of the outlet plug valve, and the inlet and the outlet are used for being connected with the expansion water tank for the battery through the fluid supplementing pressure stabilizing tube.
The outlet part of the main passage right above the filter element is upwards connected with an air-entraining pipe, the air-entraining pipe is connected with the expansion tank for the battery through a hose, a one-way valve is arranged on the air-entraining pipe or the hose, and the opening direction of the one-way valve faces the expansion tank for the battery.
The inlet plug valve and the outlet plug valve have the same structure and comprise lower cylinder bodies, and the outer walls of the lower cylinder bodies are in sliding sealing fit with the inner walls of the valve seats; a valve hole for passing the liquid medium is formed in the lower cylinder body along the radial direction, the liquid medium is prevented from passing when the valve hole is perpendicular to the axis of the main passage, and the opening degree is maximum when the valve hole is parallel to the axis of the main passage;
the lower cylinder is upwards connected with a handle through a connecting seat, the connecting seat is connected with a connecting cylinder, the connecting cylinder is positioned above the valve seat, and the bottom end of the connecting cylinder is provided with a reverse hook inwards along the radial direction;
the valve seat is upward provided with an annular hook part, and the reverse hook is hooked on the hook part.
The filter element comprises an upper cover, a lower cover and a filter layer connected between the upper cover and the lower cover, wherein the upper cover is connected with a connecting pipe, and the connecting pipe is communicated with an inner cavity of the filter element; the lower surface of the lower cover is provided with a magnet for adsorbing magnetic impurities.
The sedimentation cup is made of transparent material.
The filtering layer adopts a double-layer stainless steel net structure, the meshes of the stainless steel net of the inner layer are smaller than those of the stainless steel net of the outer layer, and the strength of the stainless steel net of the outer layer is higher than that of the stainless steel net of the inner layer.
The invention has the following advantages:
after long-time use, when the filter element needs to be replaced, the inlet plug valve and the outlet plug valve can be closed completely, and then the sedimentation cup is screwed off from the base, so that the filter element is replaced. Because the liquid medium can be blocked by closing the inlet plug valve and the outlet plug valve, the loss of the liquid medium is small when the filter element is replaced, the cost for supplementing the liquid medium is reduced, the larger cost is saved, and the frequent supplementing of the liquid medium is avoided, and the increase of maintenance workload is avoided.
When the sewage is required to be discharged, the opening degrees of the inlet plug valve and the outlet plug valve can be adjusted to reduce the flow of the liquid medium, and then the sewage discharging structure is opened to discharge impurities in the sedimentation cavity downwards. Since the flow rate of the liquid medium can be reduced, it is possible to realize non-stop sewage discharge.
Of course, when the machine is stopped for sewage disposal, the opening degree of the inlet plug valve and the opening degree of the outlet plug valve can be adjusted to be as small as possible, so that the liquid medium lost during sewage disposal is further reduced.
When in pollution discharge, liquid medium enters the annular cavity from the inner cavity of the filter element outwards through the filter layer, and then impurities are taken away downwards through the precipitation cavity, so that pollution discharge is realized on one hand, and the liquid medium is backwashed from inside to outside through the filter layer in the other direction, and backwash is performed at the same time each time, so that the filter layer of the filter element is difficult to block after long-term use, and the service life of the filter element is prolonged.
The inlet and the outlet are connected with the expansion water tank for the battery through the liquid supplementing pressure stabilizing tube, so that on one hand, the expansion water tank can be used for keeping the liquid medium at the inlet and the outlet in a basically constant pressure state, and on the other hand, the state of keeping sufficient liquid medium in the circulating pipeline connected with the main passage can be kept, and the situation of insufficient liquid medium in the circulating pipeline is prevented. Meanwhile, if too much liquid medium is in the circulating pipeline at the joint of the main passage due to the water pump for battery heat dissipation, the superfluous liquid medium can flow into the expansion water tank for battery upwards through the inlet and outlet and the liquid supplementing pressure stabilizing pipe under the action of pressure. In short, the inlet and outlet and the liquid supplementing pressure stabilizing pipe can regulate the amount of liquid medium in the circulating pipeline connected with the main passage, and if the amount of liquid medium is small, the expansion water tank for the battery supplements the liquid to the position, and if the amount of liquid medium is large, the expansion water tank for the battery flows back upwards.
When the liquid medium contains gas, the gas-guiding pipe and the hose can enable the gas to enter the expansion water tank for the battery and finally enter the ambient air under the action of the buoyancy, so that the gas in the liquid medium is discharged, and the heat transfer effect of the liquid medium is improved. The arrangement of the one-way valve can avoid the backflow of the liquid medium.
The arrangement of the reverse hook and the hook part can prevent the plug valve from being upwards punched away from the valve seat under the action of pressure of the liquid medium. The sedimentation cup is made of transparent materials, so that the quantity of impurities accumulated in the sedimentation cup can be conveniently observed, and the pollution discharge can be timely started.
The high strength is costly. The strength of the outer stainless steel net is higher, so that the outer stainless steel net can play a supporting role; the inner layer stainless steel net has smaller meshes and plays a main role in filtering. The structure of the filtering layer does not excessively increase the cost, and the structural strength is improved on the premise of ensuring the filtering performance.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic cross-sectional view of the present invention; the direction indicated by the arrow in fig. 2 is the direction of flow of the fluid there;
FIG. 3 is a schematic diagram of the inlet plug valve and the outlet plug valve in conducting configuration;
FIG. 4 is a schematic view of the inlet and outlet plug valves when closed;
FIG. 5 is a schematic structural view of the base;
FIG. 6 is a schematic view of the structure of the induced draft tube;
FIG. 7 is a schematic view of the cartridge;
fig. 8 is an enlarged view at a in fig. 2;
fig. 9 is a system schematic diagram of the present invention used in an electric vehicle thermal management system.
Detailed Description
As shown in fig. 1 to 9, the invention provides a medium filter for an electric automobile thermal management system, which is convenient for replacing a filter element, the electric automobile thermal management system is provided with a circulating pipeline 1, the top end of the circulating pipeline 1 is connected with an expansion water tank 2 for a battery, and the expansion water tank 2 for the battery is filled with a liquid medium; the circulating pipeline 1 is provided with a water pump 3 for battery heat dissipation, and the flow direction of the liquid medium is taken as the downstream direction; the liquid medium is pure water, a mixture of 50% pure water and 50% ethylene glycol, or a mixture of 50% pure water and 50% propylene glycol. The expansion tank for the motor and the expansion tank for the battery in fig. 9 may be two expansion tanks independent of each other or may be one expansion tank combined together.
The medium filter for the electric automobile thermal management system, which is convenient for replacing the filter element, comprises a base 4, wherein the base 4 is connected with a sedimentation cup 5 in a downward threaded manner; the sedimentation cup is made of transparent material (such as transparent plastic, toughened glass and the like). A main passage is horizontally arranged in the base 4, a medium inlet 6 is arranged at the upstream end of the main passage, and a medium outlet 7 is arranged at the downstream end of the main passage; the main passage is connected in series on a circulating pipeline 1 of the electric automobile thermal management system through a medium inlet 6 and a medium outlet 7, and the medium inlet 6 is positioned at the downstream of the battery cooling water pump 3 and is adjacent to the battery cooling water pump 3;
the main passage comprises an inlet portion 8 and an outlet portion 9, a partition plate 10 being arranged between the inlet portion 8 and the outlet portion 9; a cylindrical filter element 11 is clamped in the sedimentation cup 5, an annular cavity 12 is formed between the side wall of the filter element 11 and the inner wall of the sedimentation cup 5, and an inlet part 8 of the main passage is communicated with the annular cavity 12; the inner cavity of the filter element 11 is communicated with the outlet part 9 of the main passage upwards;
the bottom end of the filter element 11 is clamped with the inner side wall of the sedimentation cup 5 through a connecting rib 13, a sedimentation cavity 14 for storing impurities is formed by the bottom surface of the filter element 11 and the inner wall of the sedimentation cup 5 below the bottom surface of the filter element, the sedimentation cavity 14 is connected with a sewage draining structure 15 downwards, and the sewage draining structure 15 is a plug or a sewage draining valve;
the inlet portion 8 and the outlet portion 9 of the main passageway are provided with valve seats 16, respectively, the valve seat 16 of the inlet portion 8 being fitted with an inlet plug valve 17, the valve seat 16 of the outlet portion 9 being fitted with an outlet plug valve 18.
After long-term use, when the filter element 11 needs to be replaced, the inlet plug valve 17 and the outlet plug valve 18 can be closed firstly, and then the sedimentation cup 5 is screwed off from the base 4, so that the filter element 11 is replaced. Because the liquid medium can be blocked by closing the inlet plug valve 17 and the outlet plug valve 18, the loss amount of the liquid medium is small when the filter element 11 is replaced, the cost for supplementing the liquid medium is reduced, and the larger cost is saved.
When the sewage is discharged, the inlet plug valve 17 and the outlet plug valve 18 cannot be completely closed, so that the sewage is not discharged smoothly due to negative pressure.
The outlet portion 9 of the main passage on the downstream side of the outlet plug valve 18 is provided with an inlet/outlet 19, and the inlet/outlet 19 is connected to the expansion tank 2 for a battery through a fluid-supplementing pressure-stabilizing tube 20.
The inlet and outlet 19 is connected with the expansion tank 2 for the battery through the fluid supplementing pressure stabilizing tube 20, on one hand, the expansion tank can be used for keeping the liquid medium at the inlet and outlet 19 in a basically constant pressure state, and on the other hand, the circulation pipeline 1 at the connection position with the main passage can be kept in a state with sufficient liquid medium, so that the situation of insufficient liquid medium in the circulation pipeline 1 is prevented. Meanwhile, if the liquid medium in the circulation line 1 at the junction with the main passage is excessive due to the battery heat-dissipating water pump 3, the excessive liquid medium can flow upward into the battery expansion tank 2 through the inlet and outlet 19 and the fluid-supplementing pressure-stabilizing pipe 20 under the action of pressure. In short, the inlet/outlet 19 and the fluid-replenishing pressure-stabilizing tube 20 can regulate the amount of the liquid medium in the circulation line 1 connected to the main passage, and when the amount of the liquid medium is small, the battery expansion tank 2 is replenished with the liquid medium, and when the amount of the liquid medium is large, the battery expansion tank 2 is returned upward.
An air-introducing pipe 21 is connected upward to the outlet portion 9 of the main passage directly above the filter element 11, the air-introducing pipe 21 is connected to the expansion tank 2 for a battery through a hose 22, and a check valve is provided on the air-introducing pipe 21 or the hose 22, and the opening direction of the check valve is directed to the expansion tank 2 for a battery. The check valve is conventional and is not shown. The vent tube 21 is preferably connected to the outlet portion 9 of the main passageway by a quick-connect structure for ease of connection and replacement.
When the liquid medium contains gas, the gas-guiding pipe 21 and the hose 22 can enable the gas to enter the expansion tank 2 for the battery and finally enter the ambient air under the action of the buoyancy, so that the gas in the liquid medium is discharged, and the heat transfer effect of the liquid medium is improved. The arrangement of the one-way valve can avoid the backflow of the liquid medium.
The inlet plug valve 17 and the outlet plug valve 18 have the same structure and comprise a lower cylinder 23, and the outer wall of the lower cylinder 23 is in sliding sealing fit with the inner wall of the valve seat 16; the lower cylinder 23 is radially provided with a valve hole 24 for passing the liquid medium, when the valve hole 24 is vertical to the axis of the main passage (shown in fig. 4), the liquid medium is prevented from passing, and when the valve hole 24 is parallel to the axis of the main passage (shown in fig. 3), the opening degree of the inlet plug valve 17 or the outlet plug valve 18 is maximum;
the lower cylinder 23 is connected with a handle 26 upwards through a connecting seat 25, the connecting seat 25 is connected with a connecting cylinder 27, the connecting cylinder 27 is positioned above the valve seat 16, and the bottom end of the connecting cylinder 27 is provided with a reverse hook 28 inwards along the radial direction;
the valve seat 16 is provided with an annular hook 29 upward, and the barb 28 is hooked on the hook 29.
The arrangement of the barbs 28 and the hooks 29 prevents the plug valve from being pushed upwards away from the valve seat 16 by the liquid medium under pressure. By manually turning the handle 26, the angle between the valve hole 24 and the axis of the main passage can be adjusted, thereby adjusting the opening degrees of the inlet and outlet plug valves 17 and 18 or closing the inlet and outlet plug valves 17 and 18.
The filter element 11 comprises an upper cover 30, a lower cover 31 and a wave-folding filter layer 32 connected between the upper cover 30 and the lower cover 31, the upper cover 30 is connected with a connecting pipe 33, and the connecting pipe 33 is communicated with the inner cavity of the filter element 11 downwards and communicated with the outlet part 9 of the main passage upwards; the filter area of the wave-folding filter layer is larger, and the larger filter area can be obtained in a limited space, so that a better filter effect is obtained. The filter layer 32 adopts a double-layer stainless steel net structure, the meshes of the stainless steel net of the inner layer are smaller than those of the stainless steel net of the outer layer, and the strength of the stainless steel net of the outer layer is higher than that of the stainless steel net of the inner layer. The high strength is costly. The strength of the outer stainless steel net is higher, so that the outer stainless steel net can play a supporting role; the inner layer stainless steel net has smaller meshes and plays a main role in filtering. The structure of the filtering layer does not excessively increase the cost, and the structural strength is improved on the premise of ensuring the filtering performance.
The lower surface of the lower cover 31 is provided with a magnet 34 for adsorbing magnetic impurities. The magnet 34 is capable of adsorbing magnetic impurities and serves a better filtering and impurity removal function.
In fig. 9, the flow direction of the liquid medium at the battery heat-dissipating water pump 3 is from bottom to top.
The media filter in fig. 9 is a media filter for an electric vehicle thermal management system, which facilitates replacement of the filter element 11 according to the present invention.
When in use, the main passage is connected in series on the circulating pipeline 1 of the electric automobile thermal management system through the medium inlet 6 and the medium outlet 7, and the medium inlet 6 is positioned at the downstream of the battery heat dissipation water pump 3 and is adjacent to the battery heat dissipation water pump 3; the inlet/outlet 19 is connected to the expansion tank 2 for battery via a fluid-supplementing pressure-stabilizing tube 20, and the air-introducing tube 21 is connected to the expansion tank 2 for battery via a hose 22. The liquid medium enters the inlet part 8 of the main passage from the medium inlet 6, then enters the inner cavity of the filter element 11 downwards through the annular cavity 12 and the filter layer 32, then enters the outlet part 9 of the main passage upwards, finally flows into the circulating pipeline 1 of the electric automobile thermal management system through the medium outlet 7, in the process, the impurities in the liquid medium are blocked at the annular cavity 12 by the filter layer 32, then enter the sedimentation cavity 14 downwards through the gaps between the connecting ribs 13, and the magnetic impurities are adsorbed at the magnet 34.
When workers observe that sewage is required through the transparent sedimentation cup, the opening degree of the inlet plug valve 17 and the opening degree of the outlet plug valve 18 can be adjusted to reduce the flow rate of the liquid medium, and then the sewage draining structure 15 is opened to drain impurities in the sedimentation cavity 14 downwards. Since the flow rate of the liquid medium can be reduced, it is possible to realize non-stop sewage discharge.
Of course, during the shutdown of the sewage disposal, the opening degree of the inlet plug valve 17 and the outlet plug valve 18 can be adjusted as small as possible, thereby further reducing the liquid medium lost during the sewage disposal.
When in sewage disposal, liquid medium enters the annular cavity 12 from the inner cavity of the filter element 11 outwards through the filter layer 32, and then impurities are taken away downwards through the sedimentation cavity 14, so that sewage disposal is realized on one hand, and the liquid medium is communicated with the filter layer 32 from inside to outside in the other direction, so that back flushing is realized, and each time of sewage disposal, back flushing is simultaneously carried out, so that the filter layer 32 of the filter element 11 is ensured to be difficult to block after long-term use, and the service life of the filter element 11 is prolonged.
The above embodiments are only for illustrating the technical solution of the present invention, and it should be understood by those skilled in the art that although the present invention has been described in detail with reference to the above embodiments: modifications and equivalents may be made thereto without departing from the spirit and scope of the invention, which is intended to be encompassed by the claims.
Claims (5)
1. The medium filter is convenient for replacing the filter element, and the electric automobile thermal management system is provided with a circulating pipeline, the top end of the circulating pipeline is connected with an expansion water tank for a battery, and the expansion water tank for the battery is filled with a liquid medium; a battery heat dissipation water pump is arranged on the circulating pipeline, and the flowing direction of the liquid medium is taken as the downstream direction;
the method is characterized in that: the device comprises a base, wherein the base is connected with a sedimentation cup in a downward threaded manner; a main passage is horizontally arranged in the base, a medium inlet is arranged at the upstream end of the main passage, and a medium outlet is arranged at the downstream end of the main passage; the main passage is connected in series with a circulating pipeline of the electric automobile heat management system through a medium inlet and a medium outlet of the main passage, and the medium inlet is positioned at the downstream of the battery heat dissipation water pump and is adjacent to the battery heat dissipation water pump;
the main passage comprises an inlet part and an outlet part, and a partition plate is arranged between the inlet part and the outlet part; a cylindrical filter element is clamped in the sedimentation cup, an annular cavity is formed between the side wall of the filter element and the inner wall of the sedimentation cup, and an inlet part of the main passage is communicated with the annular cavity; the inner cavity of the filter element is communicated with the outlet part of the main passage upwards;
the bottom end of the filter element is clamped with the inner side wall of the sedimentation cup through a connecting rib, a sedimentation cavity for storing impurities is formed by the bottom surface of the filter element and the inner wall of the sedimentation cup below the filter element, and a sewage draining structure is downwards connected with the sedimentation cavity and is a plug or a sewage draining valve;
the inlet part and the outlet part of the main passage are respectively provided with a valve seat, the valve seat of the inlet part is provided with an inlet plug valve, and the valve seat of the outlet part is provided with an outlet plug valve;
an inlet and an outlet are arranged at the outlet part of the main passage at the downstream side of the outlet plug valve, and the inlet and the outlet are used for being connected with an expansion water tank for a battery through a liquid supplementing pressure stabilizing pipe;
the outlet part of the main passage right above the filter element is upwards connected with an air-entraining pipe, the air-entraining pipe is connected with the expansion tank for the battery through a hose, a one-way valve is arranged on the air-entraining pipe or the hose, and the opening direction of the one-way valve faces the expansion tank for the battery.
2. The medium filter for an electric automobile thermal management system for facilitating replacement of a filter cartridge of claim 1, wherein: the inlet plug valve and the outlet plug valve have the same structure and comprise lower cylinder bodies, and the outer walls of the lower cylinder bodies are in sliding sealing fit with the inner walls of the valve seats; a valve hole for passing the liquid medium is formed in the lower cylinder body along the radial direction, the liquid medium is prevented from passing when the valve hole is perpendicular to the axis of the main passage, and the opening degree is maximum when the valve hole is parallel to the axis of the main passage;
the lower cylinder is upwards connected with a handle through a connecting seat, the connecting seat is connected with a connecting cylinder, the connecting cylinder is positioned above the valve seat, and the bottom end of the connecting cylinder is provided with a reverse hook inwards along the radial direction;
the valve seat is upward provided with an annular hook part, and the reverse hook is hooked on the hook part.
3. The medium filter for an electric automobile thermal management system for facilitating replacement of a filter cartridge of claim 1, wherein: the filter element comprises an upper cover, a lower cover and a filter layer connected between the upper cover and the lower cover, wherein the upper cover is connected with a connecting pipe, and the connecting pipe is communicated with an inner cavity of the filter element; the lower surface of the lower cover is provided with a magnet for adsorbing magnetic impurities.
4. The medium filter for an electric automobile thermal management system for facilitating replacement of a filter cartridge of claim 1, wherein: the sedimentation cup is made of transparent material.
5. The medium filter for an electric automobile thermal management system for facilitating replacement of a filter cartridge according to claim 3, wherein: the filtering layer adopts a double-layer stainless steel net structure, the meshes of the stainless steel net of the inner layer are smaller than those of the stainless steel net of the outer layer, and the strength of the stainless steel net of the outer layer is higher than that of the stainless steel net of the inner layer.
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| CN201910614572.1A CN110203107B (en) | 2019-07-09 | 2019-07-09 | Medium filter for electric automobile thermal management system convenient to change filter core |
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| CN201910614572.1A CN110203107B (en) | 2019-07-09 | 2019-07-09 | Medium filter for electric automobile thermal management system convenient to change filter core |
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| CN110203107A CN110203107A (en) | 2019-09-06 |
| CN110203107B true CN110203107B (en) | 2024-03-12 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111828215B (en) * | 2020-08-28 | 2024-09-20 | 平原滤清器有限公司 | Water drainage system for filter |
| CN114588715B (en) * | 2022-03-11 | 2022-11-25 | 江苏同征新能源汽车零部件有限公司 | Medium filter convenient for replacing filter element for electric automobile heat management system |
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| US6217755B1 (en) * | 1998-01-22 | 2001-04-17 | Donaldson Company, Inc. | In-tank fluid filter with valve assembly |
| CN2649164Y (en) * | 2003-10-07 | 2004-10-20 | 新昌德力石化设备有限公司 | Self-cleaning filter |
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| CN109849616A (en) * | 2019-02-20 | 2019-06-07 | 苏州同捷汽车工程技术股份有限公司 | Thermal management system of electric automobile |
| CN210283968U (en) * | 2019-07-09 | 2020-04-10 | 平原滤清器有限公司 | Medium filter convenient for replacing filter element for electric automobile thermal management system |
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2019
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| US4496464A (en) * | 1983-10-03 | 1985-01-29 | Hensley Clifford J | Filter apparatus and method |
| US6217755B1 (en) * | 1998-01-22 | 2001-04-17 | Donaldson Company, Inc. | In-tank fluid filter with valve assembly |
| CN2649164Y (en) * | 2003-10-07 | 2004-10-20 | 新昌德力石化设备有限公司 | Self-cleaning filter |
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| CN110203107A (en) | 2019-09-06 |
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