CN110667333A - Electric automobile synthesizes thermal management system - Google Patents
Electric automobile synthesizes thermal management system Download PDFInfo
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- CN110667333A CN110667333A CN201910893372.4A CN201910893372A CN110667333A CN 110667333 A CN110667333 A CN 110667333A CN 201910893372 A CN201910893372 A CN 201910893372A CN 110667333 A CN110667333 A CN 110667333A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
- B60H1/00278—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit for the battery
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00321—Heat exchangers for air-conditioning devices
- B60H1/00342—Heat exchangers for air-conditioning devices of the liquid-liquid type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
- B60H1/00385—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell
- B60H1/00392—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell for electric vehicles having only electric drive means
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/66—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells
- H01M10/663—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells the system being an air-conditioner or an engine
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
- B60H2001/00307—Component temperature regulation using a liquid flow
-
- 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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/545—Temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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- 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)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Sustainable Energy (AREA)
- Sustainable Development (AREA)
- Life Sciences & Earth Sciences (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention provides an electric automobile comprehensive heat management system, which can realize quasi-two-stage compression in winter and summer through the matching connection of a hydraulic pipeline and an electronic valve, and greatly improve the heating effect in winter; compared with the traditional whole vehicle heat management scheme, the system innovatively replaces the middle heat exchanger with the three-channel heat exchanger, so that the battery cooling liquid is always involved in the air conditioning system, the number of valves is reduced, the system is simplified, and the requirement on an intelligent control system is lowered. The device can realize the operation of winter and summer, not only improves cooling efficiency, guarantees the battery uniformity to the life of extension battery system solves the low temperature environment at zero simultaneously and starts the difficulty and charge difficult problem, guarantees that the battery can both operate at its suitable temperature range under different ambient temperature conditions, improves the cycle life of battery and has guaranteed passenger's thermal comfort.
Description
Technical Field
The invention relates to a new energy automobile heat management system, in particular to an electric automobile comprehensive heat management system.
Background
In order to effectively relieve the energy and environment pressure in China, accelerate transformation and upgrade of the automobile industry and improve the international competitiveness of the automobile industry in China, new energy automobiles are rapidly developed in China in recent years, and particularly pure electric automobiles have great development potential. The new energy electric car mainly relies on a large number of modularized battery packs to provide power required by the car, under the low temperature condition, the battery is difficult to charge, even the battery cannot be charged under the extreme condition, and the battery can be subjected to capacity attenuation at the low temperature. Under the high temperature condition in summer, the external environment temperature is higher, a large amount of heat generated in the charging and discharging process of the battery pack is easy to cause the battery pack system to have high-temperature combustion explosion danger, the temperature in the automobile cabin is overhigh, the cold load is larger, and thus higher requirements are provided for the heat management system of the whole automobile. The traditional automobile air conditioner and battery thermal management system are independent and parallel, and the battery thermal management system generally adopts air cooling and liquid cooling modes for heat dissipation, so that the traditional automobile air conditioner and battery thermal management system have the limitations of low efficiency. And the PTC heating plate and the circulating pump are used in winter, namely, the heat transfer loss is increased, extra battery energy consumption is increased, and the endurance mileage of the electric automobile is reduced.
Disclosure of Invention
In order to solve the technical problems mentioned in the background technology, the invention provides a whole electric vehicle heat management system, which integrates a vehicle air conditioning system and a battery heat management system into a system, can reasonably control the temperature in a vehicle cabin and quickly control the temperature of a battery, utilizes a refrigerant to directly exchange heat, and has small heat exchange area and high efficiency.
In order to achieve the purpose, the invention adopts the technical scheme that: a heat management system is connected with a battery pack of an electric automobile and used for exchanging heat of a cooling liquid loop of the battery pack, and comprises a temperature sensor, a compressor, a four-way reversing valve A, a finned heat exchanger A, an electronic valve A, a three-way valve, an electronic expansion valve A, an intermediate heat exchanger, a four-way reversing valve B, an electronic expansion valve B, an electronic valve B, a finned heat exchanger B, a gas-liquid separator and a control module, wherein the compressor, the four-way reversing valve A, the finned heat exchanger A, the electronic valve A, the three-way valve, the electronic expansion valve A, the intermediate heat exchanger, the four-way reversing valve B, the electronic expansion valve B, the finned heat exchanger B, the gas-liquid separator and;
an exhaust port of the compressor is communicated with a valve port a of a four-way reversing valve A, a valve port d of the four-way reversing valve A is connected with a fin type heat exchanger A and then is divided into two branches, one branch is communicated with a valve port c of a four-way reversing valve B, the other branch is sequentially connected with an electronic valve A, a three-way valve and an electronic expansion valve A and then is communicated with a first inlet e of an intermediate heat exchanger, and a first outlet f of the intermediate heat exchanger is communicated with a gas supplementing port of the compressor;
an air suction port of the compressor is communicated with a valve port c of the four-way reversing valve A through a gas-liquid separator, a valve port B of the four-way reversing valve A is connected with the finned heat exchanger B and then divided into two branches, one branch is communicated with a valve port a of the four-way reversing valve B, the other branch is communicated with a free valve port of the three-way valve through the electronic valve B, a second inlet g of the middle heat exchanger is communicated with a valve port d of the four-way reversing valve B, and a second outlet h of the middle heat exchanger is communicated with the valve port B of the four-way reversing valve B after passing through the electronic;
the four-way reversing valve A, the electronic expansion valve A, the four-way reversing valve B, the electronic expansion valve B, the electronic valve B and the temperature sensor are all electrically connected with the control module.
Furthermore, an electronic valve C electrically connected with the control module is arranged on a cooling liquid loop of the battery pack.
Compared with the prior art, the invention has the beneficial effects that: the invention can realize quasi-two-stage compression in winter and summer through the matching connection of the hydraulic pipeline and the electronic valve, thereby greatly improving the heating effect in winter; the battery can be rapidly heated at extremely low temperature, compared with the traditional PTC heating, a large amount of time can be saved, and the system reduces the intermediate heat transfer link, so that the electric quantity consumption is reduced; compared with the traditional whole vehicle heat management scheme, the system innovatively replaces the middle heat exchanger with the three-channel heat exchanger, so that the battery cooling liquid is always involved in the air conditioning system, the number of valves is reduced, the system is simplified, and the requirement on an intelligent control system is lowered. The device can realize the operation of winter and summer, not only improves cooling efficiency, guarantees the battery uniformity to the life of extension battery system solves the low temperature environment at zero simultaneously and starts the difficulty and charge difficult problem, guarantees that the battery can both operate at its suitable temperature range under different ambient temperature conditions, improves the cycle life of battery and has guaranteed passenger's thermal comfort.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the working fluid cycle of the compressor in the winter heating cycle mode of the present invention;
FIG. 3 is a schematic view of the compressor cycle in the summer refrigeration cycle mode of the present invention;
the labels in the figure are: 1. the system comprises a compressor, 2, four-way reversing valves A and 3, fin type heat exchangers A and 4, electronic valves A and 5, a three-way valve and 6, electronic expansion valves A and 7, an intermediate heat exchanger and 8, four-way reversing valves B and 9, electronic expansion valves B and 10, electronic valves B and 11, fin type heat exchangers B and 12, a gas-liquid separator and 13, electronic valves C and 14, a battery pack and 15, a temperature sensor and 16 and a control module.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the protection scope of the present invention.
The heat management system comprises a temperature sensor 15, a compressor 1, a four-way reversing valve A2, a finned heat exchanger A3, an electronic valve A4, a three-way valve 5, an electronic expansion valve A6, an intermediate heat exchanger 7, a four-way reversing valve B8, an electronic expansion valve B9, an electronic valve B10, a finned heat exchanger B11, a gas-liquid separator 12 and a control module 16, wherein the temperature sensor 15 is connected with the battery pack 14 and used for detecting the real-time temperature of the battery pack 14, and the cooling liquid loop part of the battery pack 14 is arranged in the intermediate heat exchanger 7 and used for realizing heat exchange.
An exhaust port of the compressor 1 is communicated with a valve port a of a four-way reversing valve A2, a valve port d of a four-way reversing valve A2 is connected with a finned heat exchanger A3 and then is divided into two branches, one branch is communicated with a valve port c of a four-way reversing valve B8, the other branch is sequentially connected with an electronic valve A4, a three-way valve 5 and an electronic expansion valve A6 and then is communicated with a first inlet e of an intermediate heat exchanger 7, and a first outlet f of the intermediate heat exchanger 7 is communicated with a gas supplementing port of the compressor 1;
an air suction port of the compressor 1 is communicated with a valve port c of a four-way reversing valve A2 through a gas-liquid separator 12, a valve port B of the four-way reversing valve A2 is connected with a finned heat exchanger B11 and then is divided into two branches, one branch is communicated with a valve port a of a four-way reversing valve B8, the other branch is communicated with a free valve port of a three-way valve 5 through an electronic valve B10, a second inlet g of a middle heat exchanger 7 is communicated with a valve port d of a four-way reversing valve B8, and a second outlet h of the middle heat exchanger 7 is communicated with the valve port B of a four-way reversing valve B8 through an electronic expansion valve B;
the four-way reversing valve A2, the electronic valve A4, the electronic expansion valve A6, the four-way reversing valve B8, the electronic expansion valve B9, the electronic valve B10 and the temperature sensor 15 are all electrically connected with the control module 16.
In a further preferred embodiment, the coolant circuit of the battery pack 14 is provided with an electronic valve C13 electrically connected to the control module 16.
The invention is described in detail below with reference to the accompanying drawings:
as shown in fig. 1, the overall thermal management system of the electric vehicle comprises a compressor 1, a four-way reversing valve a2, a finned heat exchanger A3, an electronic valve a4, a three-way valve 5, an electronic expansion valve A6, an intermediate heat exchanger 7, a four-way reversing valve B8, an electronic expansion valve B9, an electronic valve B10, a finned heat exchanger B11, a gas-liquid separator 12, an electronic valve C13, a temperature sensor 15 and a control module 16, wherein the four-way reversing valve a2, the electronic valve a4, the electronic expansion valve A6, the four-way reversing valve B8, the electronic expansion valve B9, the electronic valve B10, the electronic valve C13 and the temperature sensor 15 are all connected with the control module 16 through electric wires, and the temperature sensor 15 is used for detecting real-time temperature in the battery pack 14, wherein the compressor 1 is preferably a; the structural forms of the finned heat exchanger A3 and the finned heat exchanger B11 comprise, but are not limited to, a plate heat exchanger and a double-pipe heat exchanger; the temperature sensor 16 is preferably a thermocouple type temperature sensor; the electronic expansion valve 9 is preferably a thermostatic expansion valve or a capillary tube; the battery pack 14 according to the present invention includes a nickel foil in the electrolyte of the unit cell.
The control module 16 is controlled by a PLC (programmable logic controller), the temperature sensor 15 is a thermocouple, the control module 2 judges the working condition required by the operation of the device after receiving the temperature signal of the temperature sensor 15, and the control module 16 controls the action of opening the electronic valves A-C and the four-way reversing valve A, B required to realize the operation of the device, so that the temperature of the battery pack 14 is ensured to reach the comfortable working interval as soon as possible.
The invention has the following three modes when in use:
(1) heating cycle in winter: as shown in fig. 2, a working medium is connected with a four-way reversing valve a2 through a compressor 1, and then is connected with a fin-type heat exchanger A3, the outlet of the fin-type heat exchanger A3 (the fin-type heat exchanger A3 is a condenser at this time), is divided into two paths, wherein one path sequentially passes through an electronic valve a4, a three-way valve 5 and an electronic expansion valve a6, enters the inside of an intermediate heat exchanger 7 to participate in heat exchange, then enters a middle air supplement port of the compressor 1, and at this time, the electronic valve B10 is closed; the other path of the refrigerant passes through the four-way reversing valve B8, then passes through the intermediate heat exchanger 7 (only heat exchange but no quality change), exchanges heat with the other path of working medium to realize supercooling, then passes through the electronic expansion valve B9, then passes through the four-way reversing valve B8, then enters the finned heat exchanger B11 (the finned heat exchanger B11 is an evaporator at this time), then passes through the four-way reversing valve A2, enters the gas-liquid separator 12, and then enters an air suction port of the compressor 1; the battery coolant is preferably an aqueous glycol solution which is subjected to heat exchange via an intermediate heat exchanger (only heat exchange and no matter exchange) and then returned to the battery.
(2) Refrigerating cycle in summer: as shown in fig. 3, a working medium enters a four-way reversing valve a2 through a compressor and then enters a finned heat exchanger B11, an outlet of the finned heat exchanger B11 (the finned heat exchanger B11 is a condenser at this time) is divided into two paths, one path of the working medium sequentially passes through an electronic valve B10, a three-way valve 5 and an electronic expansion valve a6 and then enters the inside of an intermediate heat exchanger 7 to participate in heat exchange and then enters an air supplement port in the middle of the compressor 1, and at this time, the electronic valve a4 is closed; and the other path of the cooling liquid passes through a four-way reversing valve B8, then passes through an intermediate heat exchanger 7 (only heat exchange but no quality change), exchanges heat with the other path of working medium to realize supercooling, then passes through an electronic expansion valve B9, then passes through a four-way reversing valve B8, then enters a finned heat exchanger A3 (the finned heat exchanger A3 is an evaporator at this moment), then passes through a four-way reversing valve A2, enters a gas-liquid separator 12, then enters an air suction port of the compressor 1, and the cooling liquid of the battery is preferably ethylene glycol aqueous solution, participates in heat exchange through the intermediate heat exchanger (only heat exchange but no quality change) and.
(3) And (3) extremely low temperature heating circulation: in this mode, the air conditioning system composed of the compressor 1, the intermediate heat exchanger 7, the fin heat exchanger B11 and other components is not started, then the nickel foil placed in the electrolyte is electrified by switching the switch inside the battery, the purpose of rapidly heating the battery pack is achieved, heating is stopped when the temperature of the battery pack is heated to 0 ℃, and the winter heating cycle of the air conditioner is started.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (2)
1. The utility model provides an electric automobile synthesizes thermal management system, this thermal management system links to each other with electric automobile's group battery, and this thermal management system is used for carrying out the heat transfer to the coolant liquid return circuit of group battery, its characterized in that: the heat management system comprises a temperature sensor, a compressor, a four-way reversing valve A, a finned heat exchanger A, an electronic valve A, a three-way valve, an electronic expansion valve A, an intermediate heat exchanger, a four-way reversing valve B, an electronic expansion valve B, an electronic valve B, a finned heat exchanger B, a gas-liquid separator and a control module, wherein the compressor, the four-way reversing valve A, the finned heat exchanger A, the electronic valve A, the intermediate heat exchanger, the four-way reversing valve B, the electronic expansion valve B, the electronic valve B, the finned heat exchanger B, the gas-liquid separator and the;
an exhaust port of the compressor is communicated with a valve port a of a four-way reversing valve A, a valve port d of the four-way reversing valve A is connected with a fin type heat exchanger A and then is divided into two branches, one branch is communicated with a valve port c of a four-way reversing valve B, the other branch is sequentially connected with an electronic valve A, a three-way valve and an electronic expansion valve A and then is communicated with a first inlet e of an intermediate heat exchanger, and a first outlet f of the intermediate heat exchanger is communicated with a gas supplementing port of the compressor;
an air suction port of the compressor is communicated with a valve port c of the four-way reversing valve A through a gas-liquid separator, a valve port B of the four-way reversing valve A is connected with the finned heat exchanger B and then divided into two branches, one branch is communicated with a valve port a of the four-way reversing valve B, the other branch is communicated with a free valve port of the three-way valve through the electronic valve B, a second inlet g of the middle heat exchanger is communicated with a valve port d of the four-way reversing valve B, and a second outlet h of the middle heat exchanger is communicated with the valve port B of the four-way reversing valve B after passing through the electronic;
the four-way reversing valve A, the electronic expansion valve A, the four-way reversing valve B, the electronic expansion valve B, the electronic valve B and the temperature sensor are all electrically connected with the control module.
2. The comprehensive thermal management system for the electric automobile according to claim 1, characterized in that: and an electronic valve C electrically connected with the control module is arranged on a cooling liquid loop of the battery pack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910893372.4A CN110667333B (en) | 2019-09-20 | 2019-09-20 | Electric automobile synthesizes thermal management system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910893372.4A CN110667333B (en) | 2019-09-20 | 2019-09-20 | Electric automobile synthesizes thermal management system |
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| CN110667333B CN110667333B (en) | 2022-08-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112959872A (en) * | 2021-04-01 | 2021-06-15 | 青岛朗进新能源设备有限公司 | Electric motor coach and air conditioning system thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112959872A (en) * | 2021-04-01 | 2021-06-15 | 青岛朗进新能源设备有限公司 | Electric motor coach and air conditioning system thereof |
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| CN110667333B (en) | 2022-08-05 |
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