CN219634947U

CN219634947U - Automobile air conditioner high-pressure heating water PTC assembly capable of controlling multiple heating units

Info

Publication number: CN219634947U
Application number: CN202321234679.1U
Authority: CN
Inventors: 王飞; 何高高; 段金彪; 王仁俊
Original assignee: Wuhu Dexin Intelligent Control Co ltd
Current assignee: Wuhu Dexin Intelligent Control Co ltd
Priority date: 2023-05-18
Filing date: 2023-05-18
Publication date: 2023-09-05
Anticipated expiration: 2033-05-18

Abstract

The utility model provides an automobile air conditioner high-pressure heating water PTC assembly capable of controlling a plurality of heating units, a heating water chamber is made of aluminum materials, the heating water chamber is fixed with an automobile body more firmly, the unique modeling design of a flow guide plate in the water chamber is adopted, the flow rate of a water outlet is increased, the whole heat exchange efficiency is improved, the good heat exchange efficiency can be maintained at the time of small flow, the flow guide plate enables the flow channel of the whole heating water chamber to be more symmetrical and stable, the temperature difference of hot air for heating an air conditioner is better controlled, and the phenomenon of unstable temperature can not occur; through control PCB board and three IGBT modules that assemble together with will heat fourteen heating units in the aluminium seat and switch on through the busbar and realize the heating, liquid enters into the heating hydroecium from the water inlet, takes away the heat that heating unit produced at work, and the liquid circulation passes through aluminium seat heat conduction face, absorbs sufficient heat and makes liquid heated, and finally the liquid flows from the delivery port through the deflector, accomplishes whole heat transfer process.

Description

Automobile air conditioner high-pressure heating water PTC assembly capable of controlling multiple heating units

Technical Field

The utility model belongs to the technical field of liquid heating PTC assemblies, and particularly relates to an automobile air conditioner high-pressure heating water PTC assembly capable of controlling a plurality of heating units.

Background

After the new energy vehicle loses the heat generated by the engine, the new energy vehicle is required to be heated, the energy of the new energy vehicle is required to be consumed, the water heating PTC is produced when the new energy vehicle is in such a dilemma, the driving environment which ensures the comfort of a driver is removed, the temperature, the humidity and the like in the environment of the vehicle are controlled, the temperature control of the power battery is also ensured, and the temperature control of the power battery is an important premise for ensuring the efficient and safe operation of the electric vehicle.

The existing heating mode has an electric heating mode, and the heating mode not only consumes a large amount of batteries to cause the linear reduction of the endurance mileage, but also can not well and stably supply heat when providing heat for an air conditioner, and the comfort is also reduced; the prior PTC electric heating has complex working procedures, the waterproof aspect can not meet the target requirement, the PTC can be perfectly waterproof when water is heated, so that the PTC water heater is safer and more reliable, stable and efficient; accordingly, the present utility model provides a PTC assembly for high-pressure heating water for an air conditioner of an automobile, which can control a plurality of heating units, to solve the above-mentioned problems.

Disclosure of Invention

The utility model provides an automobile air conditioner high-pressure heating water PTC assembly capable of controlling a plurality of heating units, which solves the problems that the energy consumption of a new energy automobile is overlarge due to heat supply and the endurance mileage of the new energy automobile is influenced; the problem that the air conditioner is poor in heat supply comfort is solved, and the PTC can effectively improve the air conditioner comfort; the battery can be heated by the PTC in cold weather, and the service efficiency of the battery can be optimized while the battery is protected.

The utility model is realized in such a way that the PTC assembly for heating water under high pressure of the automobile air conditioner capable of controlling a plurality of heating units comprises a plurality of heating units and a heating aluminum seat;

the heating unit comprises a middle frame and a positive plate, and the middle frame and the positive plate are integrally formed by injection molding;

the heating aluminum seat is horizontally arranged, a plurality of heating grooves distributed in a matrix are fixedly formed in the bottom of the heating aluminum seat, one heating unit is accommodated in one heating groove inner space, a bus plate is clamped above the heating unit, a water chamber cover plate is arranged on the top surface of the bus plate, the water chamber cover plate seals the heating aluminum seat, and a first cover plate insulating film is arranged between the water chamber cover plate and the heating aluminum seat;

the bottom surface of the heating aluminum seat is provided with a heating water chamber, the heating water chamber is fixedly connected with the heating aluminum seat through a fixing bolt, the bottom surface of the inner wall of the heating water chamber is provided with a boss, the front side surface of the heating water chamber is provided with a water inlet and a water outlet, the water inlet and the water outlet are communicated with the internal space of the heating water chamber, the positions, close to the water inlet and the water outlet, of the heating water chamber are provided with guide plates, and the two guide plates are distributed relatively;

the heating aluminum seat rear side is equipped with the control box, the control box leading flank is equipped with high pressure connector and low pressure connector, high pressure connector and low pressure connector relative distribution, the low pressure connector keeps away from high pressure connector one side is equipped with equipotential bolt, the control box rear side is equipped with the control box apron, the control box apron with be equipped with the second apron insulating film between the control box, the control box apron with the control box passes through the trip of control box apron is sealed with the sealant.

Preferably, the heating tank divides the internal space of the heating water chamber into a liquid flow passage.

Preferably, an aluminum seat heat conducting surface is arranged on the outer side of the heating groove.

Preferably, the heating unit further comprises a negative plate and a ceramic plate, wherein the ceramic plate is provided with a plurality of ceramic plates, the ceramic plates are distributed in the vertical direction, the ceramic plates are bonded with the positive plate through glue, and the negative plate is bonded with the ceramic plates through a limit post and glue on the middle frame.

Preferably, the negative plate and the positive plate are wrapped with an insulating heat conducting film, and the outer part of the insulating heat conducting film is fixed in the heating groove on the heating aluminum seat through a clamping plate and a bolt.

Preferably, the heating water chamber is in sealing connection with the heating aluminum seat through a sealing ring and a bolt.

Preferably, the control box is internally provided with an IGBT fastening frame, a plurality of IGBT modules and a control PCB board, the IGBT modules are arranged on the control PCB board, the IGBT fastening frame is used for fixing the IGBT modules, the IGBT modules are covered on the outer sides, and the IGBT modules are covered with IGBT insulating films, and the control PCB board is electrically connected with the high-voltage connector and the low-voltage connector.

Compared with the prior art, the utility model has the beneficial effects that:

1. the heating water chamber is made of aluminum materials, is fixed with a vehicle body more firmly, and has the unique modeling design of the guide plate in the water chamber, so that a part of space is left, the space of the water outlet is extruded, the pressure of the whole system is increased, the flow rate of the water outlet is increased, the whole heat exchange efficiency is improved, the good heat exchange efficiency can be kept in the case of small flow, the flow passage of the whole heating water chamber is more symmetrical and stable due to the path design of the guide plate, the temperature difference of hot air for heating an air conditioner is better controlled, and the phenomenon of unstable temperature can be avoided;

2. according to the utility model, the control PCB and the 3 IGBT modules assembled together are communicated with 14 heating units in the heating aluminum seat through the bus plate to realize heating, so that the use of a medium-sized and large-sized vehicle can be satisfied;

3. the PTC can achieve IP68 level waterproof, and absolute safety is guaranteed for high-pressure parts;

4. the ceramic PTC thermistor provided by the utility model is used as a heating element, is quick, safe and reliable in heating, can be used for dry heating, is internally provided with dry heating prevention protection, is internally provided with temperature protection for preventing excessive temperature, thoroughly eliminates the hidden danger of thermal runaway, integrates multiple protections such as undervoltage, overvoltage, overcurrent, overtemperature, electric leakage and dry heating, has a soft starting technology, and avoids impact influence of PTC impact current on a circuit and a battery.

Drawings

FIG. 1 is an exploded view of the overall structure of the present utility model;

FIG. 2 is a first assembly effect diagram of the overall structure of the present utility model;

FIG. 3 is a second assembly effect diagram of the overall structure of the present utility model;

FIG. 4 is a cross-sectional view of a heating water chamber according to the present utility model;

fig. 5 is an exploded view of a heating unit according to the present utility model.

In the figure:

1. a water chamber cover plate; 2. a first cover insulating film; 3. a bus plate; 4. a heating unit; 5. heating the aluminum seat; 6. a heating tank; 7. a seal ring; 8. a heating water chamber; 9. a fixing bolt; 10. a control box cover plate; 11. a second cover insulating film; 12. an IGBT fastening frame; 13. an IGBT module; 14. an IGBT insulating film; 15. a control PCB board; 16. a high voltage connector; 17. a low voltage connector; 18. equipotential bolts; 19. a control box; 20. a boss; 21. a deflector; 22. a water inlet; 23. a water outlet; 24. a plug pin; 25. a clamping plate; 26. an insulating heat conductive film; 27. a negative electrode sheet; 28. a ceramic sheet; 29. a middle frame; 30. and a positive plate.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown.

The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model.

All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1 to 5, the present utility model provides a technical solution: a PTC assembly capable of controlling a plurality of heating units for heating water under high pressure for an automobile air conditioner comprises a plurality of heating units 4 and a heating aluminum seat 5;

the heating unit 4 comprises a middle frame 29 and a positive plate 30, and the middle frame 29 and the positive plate 30 are integrally formed by injection molding; the heating aluminum seat 5 is horizontally arranged, a plurality of heating grooves 6 distributed in a matrix are fixedly arranged at the bottom of the heating aluminum seat 5, one heating unit 4 is accommodated in the inner space of one heating groove 6, a bus plate 3 is clamped above the heating unit 4, a water chamber cover plate 1 is arranged on the top surface of the bus plate 3, the water chamber cover plate 1 seals the heating aluminum seat 5, and a first cover plate insulating film 2 is arranged between the water chamber cover plate 1 and the heating aluminum seat 5; the bottom surface of the heating aluminum seat 5 is provided with a heating water chamber 8, the heating water chamber 8 is fixedly connected with the heating aluminum seat 5 through a fixing bolt 9, the bottom surface of the inner wall of the heating water chamber 8 is provided with a boss 20, the front side surface of the heating water chamber 8 is provided with a water inlet 22 and a water outlet 23, the water inlet 22 and the water outlet 23 are communicated with the inner space of the heating water chamber 8, the position, close to the water inlet 22 and the water outlet 23, of the heating water chamber 8 is provided with guide plates 21, and the two guide plates 21 are distributed relatively; the rear side of the heating aluminum seat 5 is provided with a control box 19, the front side of the control box 19 is provided with a high-voltage connector 16 and a low-voltage connector 17, the high-voltage connector 16 and the low-voltage connector 17 are distributed relatively, one side of the low-voltage connector 17 away from the high-voltage connector 16 is provided with an equipotential bolt 18, the rear side of the control box 19 is provided with a control box cover plate 10, a second cover plate insulating film 11 is arranged between the control box cover plate 10 and the control box 19, and the control box cover plate 10 and the control box 19 are sealed through a clamping hook of the control box cover plate 10 and sealant.

In the embodiment, the heating aluminum seat 5 and the heating unit 4 are arranged, and the positive plate 30 and the middle frame 29 are directly integrated into a whole in the injection molding process in the heating unit 4, so that the flatness of the positive plate 30 and the middle frame 29 is ensured; after the heating aluminum seat 5 and the water chamber cover plate 1 are clamped in through the clamping hooks of the water chamber cover plate 1, sealing is completed by filling sealant into the notch; the heating aluminum seat 5 is provided with the heating groove 6, the outer side of the heating groove 6 is provided with an aluminum seat heat conducting surface, liquid enters the heating water chamber 8 from the water inlet 22, the area of the heating water chamber 8 is large enough, the liquid can take away heat generated by the heating unit 4 in operation maximally, enough heat is absorbed through the aluminum seat heat conducting surface at the outer side of the heating groove 6 in the liquid circulation process, the whole liquid is heated, meanwhile, the design of the boss 20 and the guide plate 21 not only can play a role in fixing the position of the heating groove 6 of the heating aluminum seat 5, but also can increase flow resistance and improve heat exchange efficiency, and finally the liquid flows out from the water outlet 23 through the guide plate 21 to finish the whole heat exchange process; here, three IGBT modules 13 may be provided for turning on fourteen heating units 4 to achieve heating; the PTC can achieve IP68 level waterproof, and absolute safety is guaranteed for the high-pressure piece; the ceramic PTC thermistor is used as a heating element, has rapid heating, safety and reliability, can realize dry heating, is internally provided with dry heating prevention protection, is internally provided with temperature protection to prevent excessive temperature, thoroughly eliminates the hidden trouble of thermal runaway, integrates multiple protections such as undervoltage, overvoltage, overcurrent, overtemperature, electric leakage, dry heating and the like, has a soft starting technology, and avoids impact influence of PTC impact current on a circuit and a battery; the electrode plates on the heating unit 4 are connected and conducted in a clamping and contact mode through the clamping connector, so that the problems of short circuit, burning of the heating unit 4 and the like caused by the problems of solder dropping and the like can be effectively prevented by adopting a welding mode, and the problems of damage and service life reduction of the heating unit 4 caused by electric arc generated when high voltage is connected can be also effectively prevented; equipotential bolts 18 are arranged for connecting the whole car to the ground, so that the product can be effectively prevented from being clicked through by high voltage, the whole car can be prevented from being burnt out due to short circuit on the whole car, static electricity can be effectively dredged, static electricity on the surface of the product can be eliminated, safety and reliability can be maintained even in a moist environment, and the risk of electric shock can be avoided.

Further, referring to fig. 4, the heating tank 6 divides the internal space of the heating water chamber 8 into a liquid flow path.

In this embodiment, the heating tank 6, the boss 20 and the baffle 21 divide the internal space of the heating water chamber 8 into a liquid flow channel, the liquid enters the heating water chamber 8 from the water inlet 22, and absorbs enough heat to heat the whole liquid, and finally flows out from the water outlet 23 through the liquid flow channel and the baffle 21, thereby completing the whole heat exchange process.

Further, referring to fig. 1, an aluminum base heat conducting surface is disposed outside the heating tank 6.

In the present embodiment, the heat generated during operation of the IGBT module 13 passes through the aluminum seat heat conduction surface outside the heating tank 6 during the liquid circulation process, and absorbs enough heat so that the entire liquid is heated.

Further, referring to fig. 5, the heating unit 4 further includes a negative electrode plate 27 and ceramic plates 28, the ceramic plates 28 are four, the four ceramic plates 28 are distributed along the vertical direction, the four ceramic plates 28 are bonded with the positive electrode plate 30 through glue, and the negative electrode plate 27 is bonded with the ceramic plates 28 through a limit post and glue on the middle frame 29.

In this embodiment, glue is dispensed on the positive plate 30 in advance, the four ceramic plates 28 are arranged, the ceramic plates 28 are adhered to the positive plate 30 through glue, the four ceramic plates 28 are fastened together, the power and the service life of the whole heating unit 4 are prevented from being influenced by loosening and arc generation, and the negative plate 27 is assembled together to form a compact assembly through the limiting column of the middle frame 29 and the glue pre-dispensed on the ceramic plates 28.

Further, referring to fig. 5, the outer sides of the negative electrode plate 27 and the positive electrode plate 30 are wrapped with an insulating heat conducting film 26, and the outer part of the insulating heat conducting film 26 is fixed inside the heating groove 6 on the heating aluminum seat 5 through the clamping plate 25 and the bolt 24.

In this embodiment, the insulating and heat conducting film 26 is wrapped to effectively prevent the dangerous situation of high voltage leakage caused by the conduction between the positive plate 30 and the negative plate 27 and the heating aluminum seat 5, and simultaneously ensure the high efficiency of heat transfer, and the insulating and heat conducting film 26 is fastened in the heating groove 6 of the heating aluminum seat 5 through the clamping plate 25 and the bolt 24, so that the effective heat transfer is ensured, the waste of heat is reduced to the greatest extent, and the heat exchange efficiency is improved.

Further, referring to fig. 1, the heating water chamber 8 is connected with the heating aluminum seat 5 by a sealing ring 7 and a bolt in a sealing manner.

In the present embodiment, sixteen fixing screw holes are provided in the heating water chamber 8, and the heating water chamber 8 and the heating aluminum base 5 are sealed by the seal ring 7 and the bolts.

Further, referring to fig. 1, an IGBT fastening frame 12, a plurality of IGBT modules 13 and a control PCB 15 are disposed inside the control box 19, the plurality of IGBT modules 13 are disposed on the control PCB 15, the IGBT fastening frame 12 is used for fixing the plurality of IGBT modules 13, the IGBT insulating films 14 are disposed on the outer sides of the plurality of IGBT modules 13, and the control PCB 15 is electrically connected with the high-voltage connector 16 and the high-voltage connector 17.

In this embodiment, three IGBT modules 13 may be provided for controlling fourteen heating units 4, where the plurality of IGBT modules 13 are provided on the control PCB 15, the IGBT fastening frame 12 further fixes the plurality of IGBT modules 13 on the control PCB 15, and the IGBT insulating film 14 serves the purpose of insulating the plurality of IGBT modules 13; the control PCB 15 is electrically connected with the high-voltage connector 16 and the high-voltage connector 17, so that the power is conveniently supplied.

The working principle and the using flow of the utility model are as follows: the liquid enters the heating water chamber 8 from the water inlet 22, the area of the heating water chamber 8 is large enough, the liquid can take away the heat generated by the heating unit 4 in operation to the greatest extent, the liquid passes through the heat conducting surface of the aluminum seat outside the heating groove 6 in the flowing process of the liquid, and absorbs enough heat to heat the whole liquid, meanwhile, the design of the boss 20 and the guide plate 21 not only can play a role in fixing the position of the heating groove 6 of the heating aluminum seat 5, but also can increase the flow resistance to improve the heat exchange efficiency, and finally the liquid flows out from the water outlet 23 through the guide plate 21 to complete the whole heat exchange process; three IGBT modules 13 are arranged for conducting fourteen heating units 4 to realize heating; the PTC can achieve IP68 level waterproof, and absolute safety is guaranteed for the high-pressure piece; the ceramic PTC thermistor is used as a heating element, has rapid heating, safety and reliability, can realize dry heating, is internally provided with dry heating prevention protection, is internally provided with temperature protection to prevent excessive temperature, thoroughly eliminates the hidden trouble of thermal runaway, integrates multiple protections such as undervoltage, overvoltage, overcurrent, overtemperature, electric leakage, dry heating and the like, has a soft starting technology, and avoids impact influence of PTC impact current on a circuit and a battery; the electrode plates on the heating unit 4 are connected and conducted in a clamping and contact mode through the clamping connector, so that the problems of short circuit, burning of the heating unit 4 and the like caused by the problems of solder dropping and the like can be effectively prevented by adopting a welding mode, and the problems of damage and service life reduction of the heating unit 4 caused by electric arc generated when high voltage is connected can be also effectively prevented; equipotential bolts 18 are arranged for connecting the whole car to the ground, so that the product can be effectively prevented from being clicked through by high voltage, the whole car can be prevented from being burnt out due to short circuit on the whole car, static electricity can be effectively dredged, static electricity on the surface of the product can be eliminated, safety and reliability can be maintained even in a moist environment, and the risk of electric shock can be avoided.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. The utility model provides a steerable a plurality of heating element's car air conditioner high pressure adds hot water PTC assembly which characterized in that: comprises a plurality of heating units (4) and a heating aluminum seat (5);

the heating unit (4) comprises a middle frame (29) and a positive plate (30), and the middle frame (29) and the positive plate (30) are integrally formed by injection molding;

the heating aluminum seat (5) is horizontally arranged, a plurality of heating grooves (6) which are distributed in a matrix are fixedly formed in the bottom of the heating aluminum seat (5), one heating unit (4) is contained in one inner space of the heating groove (6), a bus plate (3) is clamped above the heating unit (4), a water chamber cover plate (1) is arranged on the top surface of the bus plate (3), the water chamber cover plate (1) seals the heating aluminum seat (5), and a first cover plate insulating film (2) is arranged between the water chamber cover plate (1) and the heating aluminum seat (5);

the bottom surface of the heating aluminum seat (5) is provided with a heating water chamber (8), the heating water chamber (8) is fixedly connected with the heating aluminum seat (5) through a fixing bolt (9), the bottom surface of the inner wall of the heating water chamber (8) is provided with a boss (20), the front side surface of the heating water chamber (8) is provided with a water inlet (22) and a water outlet (23), the water inlet (22) and the water outlet (23) are communicated with the inner space of the heating water chamber (8), the positions, close to the water inlet (22) and the water outlet (23), of the heating water chamber (8) are respectively provided with a guide plate (21), and the two guide plates (21) are distributed relatively;

the heating aluminum seat (5) trailing flank is equipped with control box (19), control box (19) leading flank is equipped with high pressure connector (16) and low pressure connector (17), high pressure connector (16) and low pressure connector (17) relative distribution, low pressure connector (17) are kept away from high pressure connector (16) one side is equipped with equipotential bolt (18), control box (19) rear side is equipped with control box apron (10), control box apron (10) with be equipped with second apron insulating film (11) between control box (19), control box apron (10) with control box (19) are passed through the trip of control box apron (10) is sealed with the sealant.

2. A vehicle air conditioning high pressure heating water PTC assembly capable of controlling a plurality of heating units as claimed in claim 1, wherein: the heating groove (6) divides the internal space of the heating water chamber (8) into a liquid flow passage.

3. A vehicle air conditioning high pressure heating water PTC assembly capable of controlling a plurality of heating units as claimed in claim 2, wherein: an aluminum seat heat conducting surface is arranged on the outer side of the heating groove (6).

4. A vehicle air conditioning high pressure heating water PTC assembly capable of controlling a plurality of heating units as claimed in claim 1, wherein: the heating unit (4) further comprises a negative plate (27) and ceramic plates (28), wherein the ceramic plates (28) are arranged in a plurality, the ceramic plates (28) are distributed in the vertical direction, the ceramic plates (28) are bonded with the positive plate (30) through glue, and the negative plate (27) is bonded with the ceramic plates (28) through limiting columns and glue on the middle frame (29).

5. A vehicle air conditioning high pressure heating water PTC assembly capable of controlling a plurality of heating units as claimed in claim 4, wherein: the negative plate (27) and the positive plate (30) are wrapped with an insulating heat conducting film (26), and the outside of the insulating heat conducting film (26) is fixed in the heating groove (6) on the heating aluminum seat (5) through a clamping plate (25) and a bolt (24).

6. A vehicle air conditioning high pressure heating water PTC assembly capable of controlling a plurality of heating units as claimed in claim 1, wherein: the heating water chamber (8) is connected with the heating aluminum seat (5) in a sealing way through a sealing ring (7) and a bolt.

7. A vehicle air conditioning high pressure heating water PTC assembly capable of controlling a plurality of heating units as claimed in claim 1, wherein: the control box (19) is internally provided with an IGBT fastening frame (12), a plurality of IGBT modules (13) and a control PCB (15), wherein a plurality of IGBT modules (13) are arranged on the control PCB (15), the IGBT fastening frame (12) is used for fixing a plurality of IGBT modules (13), the outside of each IGBT module (13) is covered with an IGBT insulating film (14), and the control PCB (15) is electrically connected with the high-voltage connector (16) and the pressure connector (17).