阅读说明：本技术 新能源车热管理系统及纯电动车 (New energy vehicle heat management system and pure electric vehicle ) 是由 安明玉 周定华 代立宏 蒋兵 彭超 汪涛 赵刚 程云云 梁学森 李悦 杨德宽 于 2019-08-27 设计创作，主要内容包括：本发明公开了一种新能源车热管理系统,包括第一冷却回路、第二冷却回路、第三冷却回路、第四冷却回路和第五冷却回路。本发明的新能源车热管理系统,具有五循环模式,可以满足三元锂电池的有效冷却和加热,以供最大性能的发挥,提高热管理效率,简化系统结构。本发明还公开了一种纯电动车。(The invention discloses a kind of new energy vehicle heat management systems, including the first cooling circuit, the second cooling circuit, third cooling circuit, the 4th cooling circuit and the 5th cooling circuit.New energy vehicle heat management system of the invention has five circulation patterns, can satisfy effectively cooling and heating for ternary lithium battery, for the performance of maximum performance, improves heat management efficiency, simplied system structure.The invention also discloses a kind of pure electric vehicles.)

1. new energy vehicle heat management system characterized by comprising

First cooling circuit is configured so that coolant liquid by radiator, the first valve, the first water pump, heat generating component and The sequential flowing of two valves；

Second cooling circuit is configured to make to cool down when the temperature value of the power battery of acquisition is not less than the first preset value Liquid presses the sequential flowing of battery cooler, PTC water heater, the second water pump, power battery and third valve；

Third cooling circuit is configured to make to cool down when the temperature value of the power battery of acquisition is not higher than the second preset value Liquid is by the sequence of battery cooler, PTC water heater, the second water pump, power battery and third valve, and PTC water heater is to cold But liquid is heated；

4th cooling circuit is configured so that coolant liquid by the first valve, the second water pump, power battery, third valve, hair The sequential flowing of hot component and the second valve；And

5th cooling circuit is configured so that coolant liquid by the first valve, the second water pump, power battery, third valve, hair The sequential flowing of hot component, the second valve and radiator.

2. new energy vehicle heat management system according to claim 1, which is characterized in that the heat generating component includes DC/DC Converter, electric machine controller and motor reducer, first valve, the second valve and third valve are triple valve.

3. new energy vehicle heat management system according to claim 1, which is characterized in that in second cooling circuit, institute It states PTC water heater not work, when coolant liquid flows through the PTC water heater, PTC water heater does not add coolant liquid Heat.

4. new energy vehicle heat management system according to any one of claims 1 to 3, which is characterized in that first preset value It is 35 degree.

5. new energy vehicle heat management system according to any one of claims 1 to 4, which is characterized in that described second cools back Lu Zhong, air-conditioning system are connected in parallel between the coolant inlet and cooling liquid outlet of battery cooler, air-conditioning system to coolant liquid into Row cooling.

6. new energy vehicle heat management system according to any one of claims 1 to 4, which is characterized in that the third cools back Lu Zhong, the battery cooler do not work, and the PTC water heater heats coolant liquid, until the temperature of power battery Value reaches third preset value, and power battery is in the charged state in heating.

7. new energy vehicle heat management system according to claim 6, which is characterized in that in the third cooling circuit, when When the temperature value of power battery reaches four preset values, the PTC water heater stops working, and power battery is in fully charged State.

8. new energy vehicle heat management system according to claim 7, which is characterized in that second preset value is 4 degree, institute State third preset value >=5 degree, the 4th preset value >=15 degree.

9. new energy vehicle heat management system according to any one of claims 1 to 8, which is characterized in that when going out for power battery Difference between the temperature value of the battery core of coolant temperature value at the mouth of a river and power battery reaches the 5th preset value and moves When the coolant temperature value of the water outlet of power battery is less than six preset values, coolant liquid is flowed along the 4th cooling circuit； When the difference between the temperature value of the battery core of the coolant temperature value and power battery of the water outlet of power battery reaches When the coolant temperature value of 5th preset value and the water outlet of power battery is greater than seven preset values, coolant liquid is cooling along the 5th It is flowed in circuit.

10. pure electric vehicle, which is characterized in that including any new energy vehicle heat management system of claim 1 to 9.

Technical field

The invention belongs to new energy vehicle technical fields, specifically, the present invention relates to a kind of new energy vehicle heat management systems System and pure electric vehicle.

Background technique

As national policy regulation is increasingly stringenter environmental protection, country encourages each Automobile Enterprises to tap a new source of energy vapour Vehicle, and have corresponding subsidy, on the contrary it can even face punishment.The one kind of pure electric vehicle passenger car as new-energy automobile, due to Its zero-emission, use cost is low, and market prospects are good, is favored by numerous enterprises.

Requirement with client to electric vehicle is higher and higher, especially prominent be to electric vehicle continuation of the journey requirement increasingly Height, in order to meet the high electric vehicle exploitation more continued a journey, main trend is using ternary lithium battery as power electric currently on the market Pond, and high heat release and the requirement of low-temperature cool starting when due to battery bulk charging, are just badly in need of a set of efficient heat management Cooling recirculation system.

Although prior art discloses a variety of technologies for being used to cool down motor and power battery in electric vehicle, and By passenger carriage HVAC system (the HVAC Heating, Ventilation of this cooling system and vehicle in some examples The abbreviation of and Air Conditioning) combination, but the combined system is also complex, heat management efficiency is lower, practical It is also expected to being further simplified system and improving system effectiveness when design.

Summary of the invention

The present invention is directed at least solve one of the technical problems existing in the prior art.For this purpose, to be solved by this invention Technical problem is to provide a kind of new energy vehicle heat management system, it is therefore an objective to improve heat management efficiency.

In order to solve the above-mentioned technical problem, the technical scheme adopted by the invention is that: new energy vehicle heat management system, packet It includes:

First cooling circuit is configured so that coolant liquid by radiator, the first valve, the first water pump, heat generating component With the sequential flowing of the second valve；

Second cooling circuit is configured to make when the temperature value of the power battery of acquisition is not less than the first preset value Coolant liquid presses the sequential flowing of battery cooler, PTC water heater, the second water pump, power battery and third valve；

Third cooling circuit is configured to make when the temperature value of the power battery of acquisition is not higher than the second preset value Sequence of the coolant liquid by battery cooler, PTC water heater, the second water pump, power battery and third valve, PTC water heater Coolant liquid is heated；

4th cooling circuit is configured so that coolant liquid by the first valve, the second water pump, power battery, third valve The sequential flowing of door, heat generating component and the second valve；And

5th cooling circuit is configured so that coolant liquid by the first valve, the second water pump, power battery, third valve Door, heat generating component, the second valve and radiator sequential flowing.

The heat generating component includes DC/DC converter, electric machine controller and motor reducer, first valve, second Valve and third valve are triple valve.

In second cooling circuit, the PTC water heater does not work, when coolant liquid flows through the PTC water heater, PTC water heater does not heat coolant liquid.

First preset value is 35 degree.

In second cooling circuit, air-conditioning system be connected in parallel on battery cooler coolant inlet and cooling liquid outlet it Between, air-conditioning system cools down to coolant liquid.

In the third cooling circuit, the battery cooler does not work, and the PTC water heater adds coolant liquid Heat, until the temperature value of power battery reaches third preset value, power battery is in the charged state in heating.

In the third cooling circuit, when the temperature value of power battery reaches four preset values, the PTC water heater It stops working, power battery is in fully charged state.

Second preset value is 4 degree, third preset value >=5 degree, the 4th preset value >=15 degree.

When between the temperature value of the battery core of the coolant temperature value and power battery of the water outlet of power battery When difference reaches the coolant temperature value of the 5th preset value and the water outlet of power battery less than six preset values, coolant liquid edge 4th cooling circuit is flowed；When the battery core of the coolant temperature value and power battery of the water outlet of power battery Difference between temperature value reaches the 5th preset value and the coolant temperature value of the water outlet of power battery is default greater than the 7th When value, coolant liquid is flowed along the 5th cooling circuit.

The present invention also provides a kind of pure electric vehicles, including above-mentioned new energy vehicle heat management system.

New energy vehicle heat management system of the invention has five circulation patterns, can satisfy the effective cold of ternary lithium battery But it and heats, for the performance of maximum performance, improves heat management efficiency, simplied system structure.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of new energy vehicle heat management system of the present invention；

Fig. 2 is the first cooling circuit circulation figure；

Fig. 3 is second and third cooling circuit circulation figure；

Fig. 4 is the 4th cooling circuit circulation figure；

Fig. 5 is the 5th cooling circuit circulation figure；

Label in above-mentioned figure is equal are as follows: 1, radiator；2, the first valve；3, the first water pump；4, DC/DC converter；5, electric Machine controller；6, motor；7, the second valve；8, battery cooler；9, PTC water heater；10, the second water pump；11, power electric Pond；12, third valve；13, compressor；14, expansion kettle；15, water temperature sensor；16, condenser.

Specific embodiment

Below against attached drawing, by the description of the embodiment, making to a specific embodiment of the invention further details of Explanation, it is therefore an objective to those skilled in the art be helped to have more complete, accurate and deep reason to design of the invention, technical solution Solution, and facilitate its implementation.

It should be noted that in embodiment disclosed below, " first ", " second ", " third ", " the 4th ", " Five ", " the 6th " and " the 7th " not representative structure and/or absolute differentiation relationship functionally, it is suitable not represent successive execution yet Sequence, and merely for convenience of description.

As shown in Figures 1 to 5, the present invention provides a kind of new energy vehicle heat management systems, including the first cooling circuit, Two cooling circuits, third cooling circuit, the 4th cooling circuit and the 5th cooling circuit.First cooling circuit is configured so that cold But liquid presses the sequential flowing of radiator 1, the first valve 2, the first water pump 3, heat generating component and the second valve 7；Second cooling circuit It is configured to make coolant liquid by battery cooler 8 when the temperature value of the power battery of acquisition is not less than the first preset value (Chiller), the sequential flowing of PTC water heater 9, the second water pump 10, power battery and third valve 12；Third cooling circuit It is configured to make coolant liquid by battery cooler 8, PTC when the temperature value of the power battery of acquisition is not higher than the second preset value The sequence of water heater 9, the second water pump 10, power battery and third valve 12, PTC water heater 9 heat coolant liquid； 4th cooling circuit is configured so that coolant liquid by the first valve 2, the second water pump 10, power battery, third valve 12, fever The sequential flowing of component and the second valve 7；5th cooling circuit is configured so that coolant liquid by the first valve 2, the second water pump 10, the sequential flowing of power battery, third valve 12, heat generating component, the second valve 7 and radiator 1.

Specifically, as shown in Figures 1 to 5, the first valve 2, the second valve 7 and third valve 12 are three-way valve, First valve 2 is connect with the first water pump 3, the second water pump 10, the second valve 7, radiator 1, the second valve 7 and radiator 1, first Valve 2, heat generating component connection, third valve 12 are connect with battery cooler 8, the first water pump 3 and power battery, and power battery is Ternary lithium battery.First valve 2 has a water inlet and two water outlets, the water inlet of the first valve 2 and the second valve 7 One water outlet is connected with the water outlet of radiator 1, and a water outlet of the first valve 2 is connect with the water inlet of the first water pump 3, Another water outlet of first valve 2 is connect with the water inlet of the second water pump 10.Second valve 7 has a water inlet and two Water outlet, the connection of a water outlet of the water inlet and heat generating component of the second valve 7, a water outlet of the second valve 7 with The water inlet of first water pump 3 connects, another water outlet of the second valve 7 is connect with the water inlet of radiator 1.Third valve 12 With a water inlet and two water outlets, the water inlet of third valve 12 and the water outlet of power battery are connected, third valve 12 water outlet is connect with the water inlet of battery cooler 8, another water outlet of third valve 12 and heat generating component Water inlet connection.The water inlet of PTC water heater 9 is connect with the cooling liquid outlet of battery cooler 8, and PTC water heater 9 goes out The mouth of a river is connect with the water inlet of the second water pump 10, and the water outlet of the second water pump 10 and the water inlet of power battery connect, and battery is cold But the coolant inlet of device 8 is connect with the water outlet of third valve 12.

As shown in Figures 1 to 5, heat generating component includes DC/DC converter 4, electric machine controller 5 and motor reducer, DC/DC Converter 4, motor reducer and 5 three of electric machine controller are integrated, form heat generating component.

VCU (entire car controller) determines whether the first cooling circuit is open-minded according to the temperature data of the heat generating component of reading. As depicted in figs. 1 and 2, when the temperature data of the VCU heat generating component read is greater than the set value, the first cooling circuit need to be opened, Namely new energy vehicle heat management system works in the first cooling cycle mode, coolant liquid is flowed along the first cooling circuit, the The operating of one water pump 3, the coolant liquid flowed out from radiator 1 is followed by the first valve 2, the first water pump 3, heat generating component and the second valve Door 7, coolant liquid finally flows into radiator 1.DC/DC converter 4, electricity when coolant liquid flows through heat generating component, to heat generating component Machine controller 5 and motor reducer carry out cooling down, and the raised coolant liquid of temperature by heat exchange is returned by the second valve 7 To radiator 1, radiator 1 carries out cooling down to coolant liquid, this circulation is more single circulation, according to the temperature of acquisition, It is issued and is ordered by VCU, to reach the heat exchange of this circulation, until the temperature data of heat generating component is reduced to set temperature range It is interior.In this process, the water outlet of the first valve 2 connecting with the second water pump 10 is in close state, the second valve 7 with The water outlet of first valve 2 connection is in close state.For first cooling circuit because being simple subprogram, control is simple, it is easy to accomplish, And flowing through route is that can satisfy cooling performance requirement under the premise of playing energy-efficient by low heatproof to high-temperature resistant.

As shown in figures 1 and 3, when the temperature value of the power battery of battery management system (BMS) acquisition is pre- not less than first If need to cool down to power battery, new energy vehicle heat management system works in the second cooling cycle mode, coolant liquid edge when value Second cooling circuit is flowed, and the operating of the second water pump 10, coolant liquid is followed by battery cooler 8, PTC water heater 9, the Two water pumps 10, power battery and third valve 12, coolant liquid finally flow into battery cooler 8, carry out subsequent cycle.At this In the process, PTC water heater 9 does not work, and when coolant liquid flows through PTC water heater 9, PTC water heater 9 is not carried out coolant liquid Heating, and the water outlet of the second valve 7 connecting with the water inlet of heat generating component is in close state.

As shown in figures 1 and 3, in the second cooling circuit, air-conditioning system be connected in parallel on battery cooler 8 coolant inlet and Between cooling liquid outlet, air-conditioning system cools down to coolant liquid, the refrigerant inlet and battery of the compressor 13 of air-conditioning system The refrigerant outlet of cooler 8 connects, the refrigerant inlet of the condenser 16 of the refrigerant outlet and air-conditioning system of compressor 13 Connection, the refrigerant outlet of condenser 16 are connect with the refrigerant inlet of battery cooler 8.HVAC assembly is connected in parallel on condenser 16 Between battery cooler 8, the refrigerant inlet of HVAC assembly is connect with the refrigerant outlet of condenser 16, the system of HVAC assembly Cryogen outlet is connect with the refrigerant inlet of compressor 13.In this second cooling circuit, battery cooler 8 intervenes work, leads to Setting battery cooler 8 structure in parallel with HVAC assembly is crossed, the refrigeration effect of air-conditioning system is borrowed, coolant liquid is cooled down, drop After coolant liquid after temperature is by being only used as access but idle PTC water heater 9, power battery is pumped by the second water pump 10 Inside is recycled, and by the coolant liquid of circulation, heat is taken away, after the second valve 7, into next simple subprogram, This recycles work of not stopping work, plays the effect that cools for power battery interior.System is formed between air-conditioning system and battery cooler 8 Cryogen heat-exchanging loop, temperature is reduced when coolant liquid being enabled to flow through battery cooler 8, so can to power battery into Row cooling down.

The temperature value of the power battery of battery management system (BMS) acquisition refers to the temperature of power battery interior battery core Value, in the present embodiment, the first preset value are 35 degree.When temperature value T >=35 degree of the battery core of BMS acquisition, new energy Vehicle heat management system works in the second cooling cycle mode, and coolant liquid is flowed along the second cooling circuit, to power battery into Row cooling down, until stop carrying out cooling down to power battery when the temperature value T of battery core is less than the first preset value, This circulation does not need to carry out the work, this second cooling circuit is in an off state by VCU.

As shown in figures 1 and 3, when the temperature value of the power battery of battery management system acquisition is not higher than the second preset value When, power battery need to be heated, new energy vehicle heat management system works in third cooling cycle mode, and coolant liquid is along third Cooling circuit is flowed, and the operating of the second water pump 10, coolant liquid is followed by battery cooler 8, PTC water heater 9, the second water Pump 10, power battery and third valve 12, coolant liquid finally flow into battery cooler 8, carry out subsequent cycle.In this process In, PTC water heater 9 is in running order, and PTC water heater 9 heats coolant liquid, and coolant liquid flows through the heating of PTC water After device 9, the temperature of coolant liquid is increased, and battery cooler 8 does not work, and battery cooler 8 does not cool down to the coolant liquid flowed through, And the water outlet of third valve 12 connecting with the water inlet of heat generating component is in close state.

As shown in figures 1 and 3, in third cooling circuit, battery cooler 8 does not work, and PTC water heater 9 is to coolant liquid It is heated, until the temperature value of power battery reaches third preset value, power battery is in the charged state in heating.Battery The temperature value of the power battery of management system acquisition refers to the temperature value of power battery interior battery core, in the present embodiment, Second preset value is 4 degree.When temperature is lower, as the temperature value T≤4 of the battery core of BMS acquisition, power battery, which is in, to be filled Under electricity condition, new energy vehicle heat management system works in third cooling cycle mode, and coolant liquid is flowed along third cooling circuit Dynamic, PTC water heater 9 is started to work at this time, and the cryogenic liquid flowed through is heated, is transmitted to by the second water pump 10 dynamic Power inside battery carries out the heat exchange work of heats, and coolant liquid passes through the second valve 7, and flows through only as access without work The battery cooler 8 of work, is transmitted in PTC water heater 9, iterative cycles, until to reach third pre- for the temperature value of battery core If value, third preset value >=5 degree, PTC water heater 9 is still worked normally at this time, and power battery is in the shape that charges in heating State, the heat distributed by heating and battery bulk charging, battery core body temperature constantly rises, as the temperature value T of power battery When reaching four preset values, PTC water heater 9 stops working, and power battery is in fully charged state, PTC water heater 9 Electricity is no longer consumed；It should be noted that this circulation is closed follow when working independently in this second and third cooling circuit circulation Ring needs expansion kettle and this circulation carrying out connection, so as to timely moisturizing and degasification.

In the present embodiment, the second preset value is 4 degree, third preset value >=5 degree, the 4th preset value >=15 degree.

The setting of second cooling circuit and third cooling circuit can guarantee battery when temperature is too low or excessively high, in list In circulation, by being directly involved for PTC water heater or air-conditioning system, rapidly battery is heated up or cooled down, with Guarantee battery in a relatively short period of time, normal connection can be reverted to or operates normally.

As shown in Figure 1 and Figure 4, when battery management system acquisition power battery water outlet coolant temperature value with (the coolant temperature value of the water outlet of power battery is greater than the battery of power battery to the temperature value of the battery core of power battery The temperature value of core) between difference reach the coolant temperature value of the 5th preset value and the water outlet of power battery less than When six preset values, coolant liquid is flowed along the 4th cooling circuit, is cooled down to heat generating component, and add to power battery Heat, new energy vehicle heat management system works in the 4th cooling cycle mode at this time, and coolant liquid is flowed along the 4th cooling circuit, The operating of second water pump 10, coolant liquid is followed by the first valve 2, the second water pump 10, power battery, third valve 12, fever group Part and the second valve 7, coolant liquid finally flow into the first valve 2, carry out subsequent cycle.This circulation is vehicle three electric (battery, electricity Mechanical, electrical control system) under working condition, cooling (DC/DC converter 4, electric machine controller 5 and electricity when power battery needs to heat Machine retarder) heating (power battery) serial loop mode, reach one when power battery leaving water temperature is greater than battery core body temperature When the temperature of definite value and coolant liquid is less than setting value, this circulation is started to work, and working cycles are as follows: coolant liquid flows through heat generating component Later, the heat of heat generating component is taken away, the component cooling of heat generating component, coolant temperature increases, when the temperature of coolant liquid is small In setting value, and when coolant temperature and the battery core body temperature temperature difference are greater than the set value, coolant liquid passes through the water outlet of the first valve 2 Mouth (without radiator 1) flows to power battery by the second water pump 10, brings heating water for power battery, makes power electric Pond temperature increases, and finally by water outlet of the coolant liquid through third valve 12 of power battery cooling, flow to heat generating component progress It heats, forms cooling heating closed loop cycle, should be noted that in this 4th cooling circuit circulation is when this circulation works independently Closed circulation needs expansion kettle and this circulation carrying out connection, so as to timely moisturizing.And in this cyclic process, the The water outlet of one valve 2 connecting with the first water pump 3 is in close state, the water outlet of the second valve 7 connecting with radiator 1 It is in close state, the water outlet of third valve 12 connecting with battery cooler 8 is in close state.

In the present embodiment, the 5th preset value is 5 degree, and the 6th preset value is 45 degree.

The setting of 4th cooling circuit, the heat that can efficiently use heat generating component generation is that battery does heating service, together When avoid using high power electric appliance (i.e. PTC water heater), the continuation of the journey of this electric vehicle can be effectively increased.

As shown in Figure 1 and Figure 5, when battery management system acquisition power battery water outlet coolant temperature value with Difference between the temperature value of the battery core of power battery reaches the cooling of the 5th preset value and the water outlet of power battery Liquid temperature value be greater than seven preset values when, coolant liquid is flowed along the 5th cooling circuit, coolant liquid along the 5th cooling circuit into Row flowing, cools down to heat generating component, and heat to power battery, and new energy vehicle heat management system works in the at this time Five cooling cycle modes, coolant liquid are flowed along the 5th cooling circuit, and the operating of the second water pump 10, coolant liquid is followed by first Valve 2, the second water pump 10, power battery, third valve 12, heat generating component, the second valve 7 and radiator 1, coolant liquid finally flows Enter in the first valve 2, carries out subsequent cycle.This circulation is similarly electric (battery, the motor, electric-control system) working condition of vehicle three Under, (power electric is heated in the cooling (DC/DC converter 4, electric machine controller 5 and motor reducer) when power battery needs to heat Pond) serial loop mode, when power battery leaving water temperature is small greater than the temperature that battery core body temperature reaches certain value and coolant liquid When setting value, this circulation is started to work, and working cycles are as follows: after coolant liquid flows through heat generating component, by the heat of heat generating component Amount is taken away, and the component of heat generating component cooling, coolant temperature increases, when the temperature of coolant liquid is greater than the set value, and coolant liquid temperature When degree is greater than the set value with the battery core body temperature temperature difference, coolant liquid passes through the water outlet of the second valve 7, flows into radiator 1, heat dissipation Device 1 cools down to coolant liquid, and the coolant liquid after the cooling of radiator 1 flows into the first valve 2, and coolant liquid is through the first valve 2 Water outlet flows to power battery by the second water pump 10, brings heating water for power battery, increases temperature of powered cell, It finally by water outlet of the coolant liquid through third valve 12 of power battery cooling, flow to heat generating component and is heated, formed cold But closed loop cycle is heated.And in this cyclic process, the water outlet of the first valve 2 connecting with the first water pump 3 is in pass The water outlet of closed state, the second valve 7 connecting with the first valve 2 is in close state, and third valve 12 is cooled down with battery The water outlet that device 8 connects is in close state.

In the present embodiment, the 5th preset value is 5 degree, and the 7th preset value is 45 degree.

The setting of 5th cooling circuit, be based on four circuits the advantages of, it can effective use heat generating component generate heat Amount is that battery does heating service, while avoiding using high power electric appliance (i.e. PTC water heater), and it is electronic can to effectively increase this The continuation of the journey of vehicle can also effectively realize that the cooling of heat generating component, the intervention of real-time control radiator guarantee heat generating component cooling performance It is up to standard.

As shown in Figures 1 to 5, the new energy vehicle heat management system of above structure, cools back in the 4th cooling circuit, the 5th There is the selection mode by triple valve progress circuit operation in parallel and serial with the first cooling circuit in road.Pass through setting three three Port valve, the first valve 2 be configured such that under the first cooling cycle mode, the first valve 2 connect with the first water pump 3 go out The mouth of a river is opened, and the cooling circuit where third valve 12 is closed, and third valve 12 does not work, and the second valve 7 connects with radiator 1 The water outlet connect is opened, and the first serial circuit of cooling system outer circulation is formed.It is a list under second and third cooling circuit mode Battery cooling system or battery charging heating system are formed alone cycle by the water outlet of third valve 12 by solely circulation Serial circuit, when wherein battery refrigerating mode works, PTC water heater 9 is only to allow the access of coolant liquid circulation without working, electricity When pond charging heating mode works, cell heater is only to allow the access of coolant liquid circulation without working；4th cooling circuit mould Under formula, the water outlet of the first valve 2 connecting with the second water pump 10 is opened, the water outlet of third valve 12 connecting with heat generating component Mouth is opened, and the water outlet of the second valve 7 connecting with the first valve 2 is opened, and is formed and is generated by the heat of heat generating component for battery The serial circuit of heating.Under 5th cooling circuit mode, the water outlet of the first valve 2 connecting with the second water pump 10 is opened, the The water outlet of three valves 12 connecting with heat generating component is opened, and is discharged temperature sensor acquisition in water pipe by radiator 1 The water outlet of temperature, the second valve 7 connecting with radiator 1 is opened, and the first cooling circuit heat under battery operated mode is formed The serial circuit that amount exchange is heated for battery；Wherein, the first cooling circuit and fourth, fifth cooling circuit form series and parallel circuit.

Therefore, the new energy vehicle heat management system of above structure can heat when low temperature charges for power battery, when high temperature It can be power battery fast cooling by air-conditioning system, the heat that heat generating component generation can be used heats for power battery, Play energy saving purpose.

The present invention also provides a kind of pure electric vehicles, the new energy vehicle heat management system including above structure.This new energy The specific structure of vehicle heat management system can refer to Fig. 1 to Fig. 5, and details are not described herein.Since pure electric vehicle of the invention includes upper The new energy vehicle heat management system in embodiment is stated, so it has the advantages that all of above-mentioned new energy vehicle heat management system.

The present invention is exemplarily described above in conjunction with attached drawing, it is clear that the present invention implements not by aforesaid way Limitation, as long as the improvement for the various unsubstantialities that the inventive concept and technical scheme of the present invention carry out is used, or without changing It is within the scope of the present invention into the conception and technical scheme of the invention are directly applied to other occasions.