WO2019039188A1

WO2019039188A1 - Battery temperature regulator and external heat source supply device

Info

Publication number: WO2019039188A1
Application number: PCT/JP2018/028140
Authority: WO
Inventors: 康光大見; 義則　毅; 功嗣三浦; 竹内　雅之
Original assignee: 株式会社デンソー
Priority date: 2017-08-24
Filing date: 2018-07-26
Publication date: 2019-02-28
Also published as: JP6879122B2; CN110692163A; JP2019040731A

Abstract

This battery temperature regulator (1) uses heat supplied from an external heat source supply device (80) installed outside of the vehicle (3) to regulate the temperature of a battery (2) mounted in the vehicle (3). The battery temperature regulator (1) is provided with a battery heat exchanger (10), tubes (21, 22), and a connection heat exchanger (30). The battery heat exchanger (10) exchanges heat between the battery (2) and a heat medium. The tubes (21, 22) are connected to the battery heat exchanger (10), and the heat medium flows through said tubes. The connection heat exchanger (30) has a vehicle-mounted thermal contact surface (35) which can thermally contact the outer thermal contact surface (84) of the external heat source supply device (80) directly, or indirectly through a heat transmission member (6). Said connection heat exchanger (30) cools or heats the heat medium flowing through the tube (21) by means of heat transmitted from the outer thermal contact surface (84) of the external heat source supply device (80) through the vehicle-mounted thermal contact surface (35).

Description

Battery temperature control device and external heat source supply device

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is based on Japanese Patent Application No. 2017-161261 filed on Aug. 24, 2017, the contents of which are incorporated herein by reference.

The present disclosure relates to a battery temperature control device that adjusts the temperature of a secondary battery (hereinafter referred to as "battery") mounted in a vehicle, and an external heat source supply device that supplies cold or heat to the battery temperature control device. It is.

In recent years, in electric vehicles such as electric vehicles and hybrid vehicles (hereinafter referred to as "vehicles"), in order to shorten the charging time of the battery mounted on the vehicle, it is considered to increase the current value supplied to the battery at the time of rapid charging. ing. In that case, the current value flowing to the battery at the time of rapid charging is larger than the current value flowing to the battery at the time of traveling the vehicle using the electric motor. Specifically, the output during rapid charge may be 150 kW or more. Here, the relationship between the calorific value Q of the battery, the current value I flowing through the battery, and the internal resistance value R of the battery is represented by Q = I ² × R. That is, the calorific value of the battery increases in proportion to the square of the current value. Therefore, in the case of quick charging, it is required to sufficiently cool the battery. When the battery is cooled using the cold energy generated by the refrigeration cycle used in a vehicle air conditioner, it is possible to cope with battery heat generation with an output of about 4 kW during charging, but more than that It can not cope with the battery heat of. When the cooling capacity of a battery cooling device mounted on a vehicle is increased to cope with battery heat generation during rapid charging, the following problems may be considered. For example, with the increase in size of the battery cooling device, it becomes difficult to secure a vehicle mounting space. As the weight of the battery cooling device increases, the weight of the vehicle increases, and the travel distance of the vehicle using the electric motor decreases. Alternatively, the cost for the battery cooling device may increase.

According to Patent Document 1, when charging a battery mounted on a vehicle, a heat medium is supplied from a charging device installed outside the vehicle to a liquid circuit provided on the vehicle, and the battery is cooled using cold heat of the heat medium Technology is described. Specifically, in this technology, when charging a battery mounted on a vehicle, a plug for heat medium supply provided in a charging device installed outside the vehicle is inserted into a heat medium introducing portion of the vehicle, and the charging device The cooled heat medium is supplied to a liquid circuit provided in the vehicle. In this technique, the heat mediums are heat exchanged between the first liquid circuit to which the heat medium is supplied from the charging device and the second liquid circuit separately provided in the vehicle. Then, the battery is cooled by the heat medium circulating in the second liquid circuit. Thus, in the technology of Patent Document 1, it is possible to cool the battery without increasing the cooling capacity of the battery cooling device mounted on the vehicle.

JP, 2017-4677, A

However, according to the technique of Patent Document 1, the plug for heating medium supply provided in the charging device at the start of charging of the battery mounted on the vehicle is inserted into the heating medium introduction portion of the vehicle, and the plug is heated at the end of charging. It is necessary to remove it from the medium introduction unit. Therefore, there is a possibility that foreign matter and the like may enter the liquid circuit provided in the vehicle from the connection point between the heat medium supply plug and the heat medium introducing portion of the vehicle. If the fluid circuit provided in the vehicle is clogged by the foreign matter, there is a problem that the fluid circuit may be broken. In addition, if leakage of the heat medium from the plug for heat medium supply and the heat medium introduction part of the vehicle or dripping of the heat medium occurs, the vehicle, the charging worker or the charging place is contaminated by the heat medium There is a problem of If a flammable liquid is used as the heat medium, there is also the danger of ignition.

An object of the present disclosure is to provide a battery temperature adjustment device capable of adjusting the temperature of the battery using heat supplied from the external heat source supply device by thermal contact. Another object of the present disclosure is to provide an external heat source supply device for supplying cold heat or heat to the battery temperature control device.

According to one aspect of the present disclosure,
A battery temperature control device that adjusts the temperature of a battery mounted on a vehicle using heat supplied from an external heat source supply device installed outside the vehicle, comprising:
A battery heat exchanger that exchanges heat between the battery and the heat medium;
Piping connected to the battery heat exchanger and through which the heat medium flows;
It has an on-board thermal contact surface that can be in direct thermal contact with the external thermal contact surface of the external heat source supply device or indirectly via the thermal conduction member, and heat is transmitted from the external thermal contact surface via the on-board thermal contact surface And a connected heat exchanger for cooling or heating the heat medium flowing through the piping.

According to this, the heat medium cooled or heated in the connection heat exchanger by the thermal contact between the external thermal contact surface and the on-vehicle thermal contact surface flows through the pipe to the battery heat exchanger. The battery heat exchanger can cool or warm up the battery by heat exchange between the heat medium and the battery. Therefore, in the battery temperature control device, the heat medium does not flow from the external heat source supply device into the circuit of the heat medium of the battery temperature control device as in the technique described in Patent Document 1, so the heat temperature of the battery temperature control device Contamination of foreign matter is prevented in the circuit of the medium. In addition, since the heat medium does not leak or drip between the external thermal contact surface and the in-vehicle thermal contact surface, the vehicle, the charging operator or the charging place is prevented from being contaminated by the thermal medium. Furthermore, the battery temperature control device adjusts the temperature of the battery mounted on the vehicle using heat supplied from an external heat source supply device installed outside the vehicle, thereby increasing the weight and size of the battery temperature control device It is possible to increase the cooling capacity of the battery without Therefore, the battery temperature control device can prevent the circuit failure and can adjust the temperature of the battery cleanly, safely and with a large capacity.

Also, according to another point of view,
An external heat source supply device installed outside the vehicle,
A pump for circulating the heat medium to the heat medium circuit;
A heat source unit for cooling or heating the heat medium flowing through the heat medium circuit;
A heat retention tank which stores the heat medium cooled or heated by the heat source section at a predetermined temperature state;
It has an external thermal contact surface that can be in direct thermal contact with the on-board thermal contact surface provided in the vehicle or indirectly via the thermal conduction member, and the heat supplied by the thermal medium flowing through the thermal medium circuit can be And an externally connected heat exchanger capable of being transmitted from the contact surface to the on-board thermal contact surface.

According to this, the external heat source supply device requires a large capacity in a short time for temperature control of the battery, such as at the time of quick charge, by storing the heat medium brought to the predetermined temperature state in the heat retention tank. The case can also be addressed.

The reference numerals in parentheses attached to each component, etc., shows an example of a relationship of the specific component such as described in the following embodiments and their components, and the like.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic diagram of the vehicle and charging device which mount the battery temperature control apparatus which concerns on 1st Embodiment. It is a circuit block diagram of the battery temperature control apparatus which concerns on 1st Embodiment, and a charging device. It is a perspective view which shows schematic structure of the battery temperature control apparatus which concerns on 1st Embodiment. It is a circuit block diagram of the battery temperature control apparatus which concerns on 1st Embodiment, and a charging device. It is a schematic diagram of the vehicle and charging device which mount the battery temperature control apparatus which concerns on 2nd Embodiment. It is a circuit block diagram of the battery temperature control apparatus which concerns on 3rd Embodiment, and a charging device. It is a circuit block diagram of the battery temperature control apparatus which concerns on 4th Embodiment, and a charging device. It is a circuit block diagram of the battery temperature control apparatus which concerns on 5th Embodiment, and a charging device. It is a schematic diagram of the vehicle and charging device which mount the battery temperature control apparatus which concerns on 6th Embodiment. It is a flowchart which shows the control processing which a battery control apparatus and a charge control apparatus perform. It is a circuit block diagram of the charging device which concerns on 7th Embodiment.

Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. In the following embodiments, parts that are the same as or equivalent to each other will be described with the same reference numerals.

First Embodiment
The first embodiment will be described with reference to FIGS. 1 to 3. The battery temperature control device 1 of the first embodiment is mounted on an electric vehicle such as an electric vehicle or a hybrid vehicle (hereinafter, simply referred to as "vehicle 3"). The battery temperature control device 1 of the first embodiment cools or warms up a secondary battery (hereinafter, referred to as “battery 2”) mounted on the vehicle 3 to adjust the temperature of the battery 2.

First, the battery 2 to be cooled and warmed up by the battery temperature adjustment device 1 will be described. A large battery 2 installed in a vehicle 3 is mounted under a seat of the vehicle 3 or under a trunk room as a battery pack (i.e., a storage device) storing a plurality of battery modules in which a plurality of battery cells are combined. . The power stored in the battery 2 is supplied to the vehicle drive motor via an inverter or the like. The battery 2 is configured to be chargeable by the power supplied from the charging device 70 installed outside the vehicle 3. The charging device 70 may be a rapid charging device capable of performing quick charging with an output of 150 kW or more, or may be a charging device with an output of 150 kW or less.

The battery 2 generates heat at the time of discharge and charge such as while the vehicle is traveling, and at the time of charge where power is supplied from the charging device 70 installed outside the vehicle 3. When the temperature of the battery 2 becomes high, it not only can not exert sufficient functions but also causes deterioration or breakage, so a cooling device for maintaining the battery 2 at a certain temperature or lower is required. On the other hand, when the battery 2 is in a low temperature state, the internal resistance of the battery 2 becomes large and charging can not be performed. Therefore, a warm-up device is required to warm up the battery 2 in a low temperature state at the start of charging in a low temperature environment.

Furthermore, although battery 2 is configured as a battery module including a plurality of battery cells, if there is variation in the temperature of each battery cell, battery cell deterioration occurs unevenly, and the storage performance of battery 2 decreases. . This is because the input / output characteristics of the power storage device are determined in accordance with the most deteriorated battery cell characteristics. Therefore, in order to cause the battery 2 to exhibit desired performance over a long period of time, it is important to make the temperature uniform to reduce the temperature variation among the plurality of battery cells.

Also, in general, as another cooling device for cooling the battery 2, a blower system using a blower may be adopted. However, since the blower only blows the air in the passenger compartment, the cooling capacity is low. Further, since the battery 2 is cooled by the sensible heat of the air in the blowing by the blower, the temperature difference between the upstream and the downstream of the air flow becomes large, and the temperature variation between the plurality of battery cells can not be sufficiently suppressed. From such a background, the battery temperature control device 1 of the first embodiment adopts a thermo-siphon system in which the temperature of the battery 2 is adjusted by natural circulation of the heat medium.

As shown in FIG. 1, the battery temperature control device 1 according to the first embodiment uses cold heat or heat supplied from an external heat source supply device 80 provided in a charging device 70 installed outside the vehicle 3. It is a device capable of adjusting the temperature of the battery 2 mounted on the vehicle 3.

The charging device 70 of the present embodiment includes an external heat source supply device 80 and an external power supply device 90. The external power supply device 90 includes an external power supply device main body 91, a charging cable 92, a charging connector 93, and the like. The charging connector 93 provided in the external power supply device 90 can be inserted into the charging port 4 provided in the vehicle 3. In that state, external power supply device 90 is connected to battery 2 mounted on vehicle 3 from external power supply device main body 91 through charging cable 92, charging connector 93, charging port 4 and wiring 5 inside the vehicle. Supply power. When power is supplied from the external power supply device 90 to the battery 2, the battery 2 is charged.

On the other hand, the external heat source supply apparatus 80 includes an external heat source supply apparatus main body 81, an external pipe 82, an external connection heat exchanger 83, and the like. The external connection heat exchanger 83 provided in the external heat source supply device 80 may be in direct contact with the on-board thermal contact surface 35 provided in the vehicle 3 or may be in indirect thermal contact via the thermal conduction member 6 It is possible. In that state, the external heat source supply device 80 supplies cold heat or heat to the on-vehicle thermal contact surface 35 from the external heat source supply device body 81 through the external pipe 82 and the externally connected heat exchanger 83. When cold heat or heat is supplied from the external heat source supply device 80 to the battery temperature adjustment device 1, the battery temperature adjustment device 1 cools or warms up the battery 2 using the heat. The external heat source supply device 80 may be provided separately from the charging device 70.

Next, the configuration of the battery temperature control device 1 will be described. As shown in FIGS. 2 and 3, the battery temperature adjustment device 1 includes a battery heat exchanger 10, pipes 21 and 22, a connection heat exchanger 30, and an on-vehicle heat source unit 40. The battery temperature control device 1 constitutes a thermosyphon circuit in which a heat medium circulates. As the heat medium, for example, fluorocarbon working fluid such as HFO-1234yf or HFC-134a is used.

The battery heat exchanger 10 includes an upper header tank 11, a lower header tank 12, and a plurality of tubes 13 communicating the upper header tank 11 with the lower header tank 12. The plurality of tubes 13 of the battery heat exchanger 10 extend along the direction of gravity. In the present specification, “along the direction of gravity” means, in addition to a state parallel to the direction of gravity, a state including an angle of about 30 ° with respect to the direction of gravity. The liquid surface FL1 of the heat medium circulating in the thermosyphon circuit is located in the middle of the flow passage inside the tube 13 of the battery heat exchanger 10. The battery heat exchanger 10 is bonded to the battery 2 by an adhesive heat-radiating sheet or the like (not shown). Therefore, the battery heat exchanger 10 can perform heat exchange between the battery 2 and the heat medium.

The connection heat exchanger 30 also has an upper header tank 31, a lower header tank 32, and a plurality of tubes 33 communicating the upper header tank 31 with the lower header tank 32. A plurality of tubes 33 of the connecting heat exchanger 30 also extend along the gravity direction. The liquid surface FL2 of the heat medium circulating in the thermosyphon circuit is located in the middle of the flow path inside the tube 33 of the connection heat exchanger 30. The connection heat exchanger 30 has an on-vehicle thermal contact surface 35 at a position where it can be exposed to the outside of the vehicle. The on-vehicle thermal contact surface 35 is formed along the direction of gravity. In FIG. 3, in order to clearly show the range of the in-vehicle thermal contact surface 35, the in-vehicle thermal contact surface 35 is hatched although it is not a cross section. A cover (not shown) may be provided on the outer wall of the vehicle located outside the on-board thermal contact surface 35, and the on-board thermal contact surface 35 may be exposed outside the vehicle by opening the cover.

The external thermal contact surface 84 of the external connection heat exchanger 83 provided in the external heat source supply device 80 is in direct contact with the on-vehicle thermal contact surface 35 or indirectly via the thermal conduction member 6 such as a heat dissipation sheet. It is possible to make thermal contact. The external connection heat exchanger 83 provided in the external heat source supply device 80 is illustrated with respect to the vehicle 3 or the connection heat exchanger 30 in a state where the in-vehicle thermal contact surface 35 and the external thermal contact surface 84 are in thermal contact. It is fixed by a clamp device etc. In the connection heat exchanger 30, the heat medium flowing inside the connection heat exchanger 30 is cooled or heated by cold heat or heat transferred from the external heat contact surface 84 of the external heat source supply device 80 through the on-vehicle heat contact surface 35. Are configured to

The pipe 21 connects the battery heat exchanger 10 and the connection heat exchanger 30 and circulates the heat medium therebetween. The pipe 22 connects the battery heat exchanger 10 and the on-vehicle heat source unit 40, and circulates the heat medium therebetween. In the following description, the pipe 21 connecting the battery heat exchanger 10 and the connection heat exchanger 30 is referred to as a first pipe 21. The pipe 22 connecting the battery heat exchanger 10 and the on-vehicle heat source unit 40 is referred to as a second pipe 22.

The first pipe 21 has a first liquid passage 211 and a first gas passage 212. The first liquid passage 211 connects the outlet / inlet 121 provided in the lower header tank 12 of the battery heat exchanger 10 and the outlet / inlet 321 provided in the lower header tank 32 of the connection heat exchanger 30. . That is, the first liquid passage 211 is the outlet / inlet 121 provided below the liquid surface FL1 of the heat medium in the battery heat exchanger 10, and the liquid surface FL2 of the heat medium in the connection heat exchanger 30. It connects with the outflow inlet 321 provided on the lower side. The first gas passage 212 connects the outlet / inlet 111 provided in the upper header tank 11 of the battery heat exchanger 10 and the outlet / inlet 311 provided in the upper header tank 31 of the connection heat exchanger 30. . That is, the first gas passage 212 is provided from the outflow / inflow port 111 provided above the liquid surface FL1 of the heat medium in the battery heat exchanger 10 and the liquid surface FL2 of the heat medium in the connection heat exchanger 30. It connects with the outflow inlet 311 provided on the upper side. Thus, the battery heat exchanger 10, the connection heat exchanger 30, the first liquid passage 211, and the first gas passage 212 constitute a first thermosyphon circuit 100 in which a heat medium circulates.

The on-vehicle heat source unit 40 is configured of one or more radiators. In the first embodiment, the on-vehicle heat source unit 40 includes an air radiator 41 and a refrigerant radiator 42 connected to the evaporator 51 of the refrigeration cycle 50. The air radiator 41 exchanges heat between the heat medium flowing inside the air radiator 41 and the outside air passing through the air radiator 41 to radiate the heat of the heat medium flowing inside the air radiator 41 to the outside air Heat exchanger. Further, the refrigerant radiator 42 performs heat exchange between the heat medium flowing inside the refrigerant radiator 42 and the low-temperature low-pressure refrigerant circulating in the refrigeration cycle 50, whereby the heat of the heat medium flowing inside the refrigerant radiator 42 Is dissipated to the refrigerant circulating in the refrigeration cycle 50. The air radiator 41 and the refrigerant radiator 42 can be selectively used according to the heat generation state of the battery 2 or the traveling state of the vehicle 3 or the like. Further, the on-vehicle heat source unit 40 may be a liquid cooling radiator which performs heat exchange between a heat medium and a liquid such as cooling water flowing in a liquid circuit (not shown) instead of the air radiator 41 or the refrigerant radiator 42. . Further, the on-vehicle heat source unit 40 may be configured by a Peltier element.

The second pipe 22 has a second liquid passage 221 and a second gas passage 222. The second liquid passage 221 includes an outlet port 122 provided in the lower header tank 12 of the battery heat exchanger 10, an outlet port 411 provided below the air radiator 41, and a lower side of the refrigerant radiator 42. It connects with the outflow inlet 421 provided in. The second gas passage 222 is provided on the upper side of the refrigerant outlet 42, the outlet / inlet 412 provided on the upper side of the air radiator 41, and the upper side of the refrigerant radiator 42. And the connected outlet 422. Thus, the battery heat exchanger 10, the air radiator 41, the refrigerant radiator 42, the second liquid passage 221, and the second gas passage 222 also constitute a second thermosiphon circuit 200 in which the heat medium circulates. The first thermosiphon circuit 100 and the second thermosiphon circuit 200 communicate with each other, and the same heat medium circulates.

Subsequently, the movement of the heat medium when the battery temperature control device 1 cools the battery 2 will be described with reference to FIG. In FIG. 2, the movement of the heat medium of gas is indicated by a broken arrow, and the movement of the heat medium of liquid is indicated by a solid arrow. The movement of the heat medium shown in FIG. 2 is performed when the battery 2 is being charged in a state where the charging connector 93 included in the external power supply device 90 is inserted into the charging port 4 provided in the vehicle 3 belongs to. Also, the movement of the heat medium is caused by the external connection heat exchanger 83 provided in the external heat source supply device 80 making direct contact with the on-vehicle thermal contact surface 35 or making indirect thermal contact via the heat conducting member 6 It is in the state. In that state, the external heat source supply device 80 supplies cold heat from the externally connected heat exchanger 83 to the on-vehicle thermal contact surface 35.

When the battery 2 generates heat, the heat is absorbed by the heat medium in the battery heat exchanger 10, and the heat medium evaporates inside the battery heat exchanger 10. A portion of the heat medium that has become gas in the battery heat exchanger 10 flows from the battery heat exchanger 10 through the first gas passage 212 into the connection heat exchanger 30. Further, another part of the heat medium that has become a gas in the battery heat exchanger 10 flows from the battery heat exchanger 10 through the second gas passage 222 into the air radiator 41 and the refrigerant radiator 42. That is, the heat absorbed by the heat medium inside the battery heat exchanger 10 from the battery is transported by the heat medium to the connection heat exchanger 30, the air radiator 41, and the refrigerant radiator 42.

As described above, the external thermal contact surface 84 of the external connection heat exchanger 83 and the on-board thermal contact surface 35 of the connection heat exchanger 30 are in direct thermal contact or indirect thermal contact via the thermal conductive member 6. ing. Therefore, cold heat is supplied from the external heat contact surface 84 of the external heat source supply device 80 to the heat medium of the connection heat exchanger 30 via the on-vehicle heat contact surface 35. As a result, the heat medium of the connection heat exchanger 30 dissipates heat to the external thermal contact surface 84 via the on-board thermal contact surface 35 and condenses. The heat medium that has become liquid in the connection heat exchanger 30 flows through the first liquid passage 211 and flows into the battery heat exchanger 10.

On the other hand, the heat medium which has flowed to the air radiator 41 radiates heat to the outside air and condenses. Further, the heat medium that has flowed to the refrigerant radiator 42 dissipates heat to the refrigerant flowing through the refrigeration cycle 50 and condenses. The heat medium which has become a liquid by the air radiator 41 and the refrigerant radiator 42 flows down the second liquid passage 221 and flows into the battery heat exchanger 10.

Thus, the heat generated from the battery 2 is transported to the connection heat exchanger 30, the air radiator 41 and the refrigerant radiator 42 by the heat medium evaporated in the battery heat exchanger 10, and the respective devices are externally The heat is dissipated to the heat contact surface 84, the outside air, or the refrigerant flowing through the refrigeration cycle 50. Thereby, the battery temperature adjustment device 1 of the first embodiment can cool the battery 2 mounted on the vehicle 3.

Next, the movement of the heat medium when the battery temperature control device 1 warms up the battery 2 in the low temperature state at the start of charging in a low temperature environment will be described with reference to FIG. Also in FIG. 4, the movement of the heat medium of the gas is indicated by a broken arrow, and the movement of the heat medium of the liquid is indicated by a solid arrow. In the movement of the heat medium shown in FIG. 4, the externally connected heat exchanger 83 provided in the external heat source supply device 80 is in direct contact with the on-vehicle thermal contact surface 35 or indirectly via the heat conducting member 6. It is in a state of thermal contact.

At the start of charging in a low temperature environment, the heat is supplied from the external thermal contact surface 84 of the external heat source supply device 80 to the on-board thermal contact surface 35 of the connection heat exchanger 30. As a result, the heat medium flowing through the connection heat exchanger 30 absorbs heat from the on-board thermal contact surface 35 and the external thermal contact surface 84, and the heat medium evaporates in the connection heat exchanger 30. The heat medium that has become gas in the connection heat exchanger 30 flows from the connection heat exchanger 30 through the first gas passage 212 into the battery heat exchanger 10. The heat medium of the gas flowing into the battery heat exchanger 10 dissipates heat to the battery 2 and condenses. Thereby, the battery 2 is warmed up. The heat medium that has become liquid in the battery heat exchanger 10 flows through the first liquid passage 211 and flows into the connection heat exchanger 30.

Thus, the heat supplied from the external heat contact surface 84 of the external heat source supply device 80 to the on-vehicle heat contact surface 35 is transported to the battery heat exchanger 10 by the heat medium evaporated in the connection heat exchanger 30. It is transmitted to the battery 2. Thereby, the battery temperature adjustment device 1 of the first embodiment can warm up the battery 2 mounted on the vehicle 3.

The battery temperature control device 1 according to the first embodiment described above has the following effects.
(1) In the first embodiment, the connection heat exchanger 30 included in the battery temperature adjustment device 1 is in direct contact with the external thermal contact surface 84 of the external heat source supply device 80 or indirectly through the thermal conduction member 6 It has an on-vehicle thermal contact surface 35 that can be contacted. The connection heat exchanger 30 cools or heats the heat medium by the heat transmitted from the external thermal contact surface 84 of the external heat source supply device 80 through the on-board thermal contact surface 35.

According to this, the heat medium cooled or heated by the thermal contact between the external thermal contact surface 84 and the on-board thermal contact surface 35 flows through the first pipe 21 to the battery heat exchanger 10. The battery heat exchanger 10 can cool or warm up the battery 2 by heat exchange between the heat medium and the battery 2. Therefore, since the heat medium does not flow from the external heat source supply device 80 into the battery temperature control apparatus 1 as in the technology described in Patent Document 1, the heat medium of the battery temperature control apparatus 1 is not Contamination of foreign matter is prevented in the circuit of In addition, since the heat medium does not leak or drip between the external heat contact surface 84 and the on-vehicle heat contact surface 35, the vehicle 3, the charging operator, the charging place, etc. are prevented from being contaminated by the heat medium. Furthermore, since the battery temperature adjustment device 1 adjusts the temperature of the battery 2 using heat supplied from the external heat source supply device 80 installed outside the vehicle 3, the weight and size of the battery temperature adjustment device 1 are increased. It is possible to increase the cooling capacity of the battery 2 without causing the problem. Therefore, the battery temperature control device 1 can prevent the circuit failure and can adjust the temperature of the battery 2 cleanly, safely and with a large capacity.

(2) In the first embodiment, the battery heat exchanger 10, the first pipe 21 and the connecting heat exchanger 30 included in the battery temperature adjustment device 1 constitute a first thermosyphon circuit 100. The liquid surfaces FL1 and FL2 of the heat medium circulating in the first thermosyphon circuit 100 are located in the middle of the flow path inside the battery heat exchanger 10 and in the flow path inside the connection heat exchanger 30. It is located in the middle. According to this, in the flow path inside the battery heat exchanger 10, the heat medium can perform both evaporation and condensation. Further, in the flow path inside the connection heat exchanger 30, the heat medium can perform both evaporation and condensation. Therefore, the battery temperature adjustment device 1 cools and warms up the battery 2 by cold heat or heat transferred from the external heat contact surface 84 of the external heat source supply device 80 to the connection heat exchanger 30 via the on-vehicle heat contact surface 35. It is possible to do both.

(3) In the first embodiment, the battery temperature adjustment device 1 includes the refrigerant radiator 42 connected to the evaporator 51 of the refrigeration cycle 50 and the air radiator 41 as the on-vehicle heat source unit 40. According to this, according to the state of the vehicle when charging and discharging the battery 2 and the heat generation state of the battery, the battery temperature control device 1 cools the battery using the on-vehicle heat source unit 40 as a cold heat supply source and the external heat source. Battery cooling using the supply device 80 as a cold heat source can be used properly. For example, when the battery 2 is charged from the external power supply device 90 while the vehicle 3 is stopped, when the calorific value of the battery 2 is large, both the external heat source supply device 80 and the on-vehicle heat source unit 40 are used as a cold heat source. It is possible to perform battery cooling. Further, in this case, when the calorific value of the battery 2 is small and the occupant is in the vehicle, battery cooling is performed using the external heat source supply device 80 as a cold heat source, and the refrigeration cycle 50 is an air conditioner in the passenger compartment. It can also be used as a source of cold heat for On the other hand, when the battery 2 is charged and discharged when the vehicle travels, it is possible to perform battery cooling using the on-vehicle heat source unit 40 as a cold heat source.

Second Embodiment
The second embodiment will be described with reference to FIG. The second embodiment is the same as the first embodiment except that the arrangement of the connection heat exchanger 30 is changed from the first embodiment, and therefore, only the portions different from the first embodiment will be described. Do.

Also in the second embodiment, the battery temperature control device 1 configures a thermosyphon circuit as in the first embodiment. The connection heat exchanger 30 included in the battery temperature adjustment device 1 is provided above the battery heat exchanger 10 in the direction of gravity. In this case, the liquid surface FL1 of the heat medium circulating in the thermosyphon circuit is located in the middle of the flow path inside the battery heat exchanger 10. Alternatively, the liquid surface FL1 of the heat medium may be located in the middle of the first pipe 21 connecting the battery heat exchanger 10 and the connection heat exchanger 30. In addition, the vehicle-mounted thermal contact surface 35 of 2nd Embodiment is also provided in the position which can be exposed out of a vehicle similarly to 1st Embodiment. The external thermal contact surface 84 of the external connection heat exchanger 83 provided in the external heat source supply device 80 is in direct contact with the on-vehicle thermal contact surface 35 or indirectly via the thermal conduction member 6 such as a heat dissipation sheet. It is possible to make thermal contact. The connection heat exchanger 30 can cool the heat medium flowing inside the connection heat exchanger 30 by cold heat transmitted from the external heat contact surface 84 of the external heat source supply device 80 through the on-vehicle heat contact surface 35. is there.

Also in the second embodiment, when the battery 2 generates heat, the heat is absorbed by the heat medium in the battery heat exchanger 10, and the heat medium evaporates in the battery heat exchanger 10. The heat medium that has become gas in the battery heat exchanger 10 flows from the battery heat exchanger 10 through the first gas passage 212 into the connection heat exchanger 30. The heat medium flowing through the connection heat exchanger 30 dissipates heat to the external thermal contact surface 84 via the on-board thermal contact surface 35 and condenses. The heat medium that has become liquid in the connection heat exchanger 30 flows through the first liquid passage 211 and flows into the battery heat exchanger 10. Although not shown, the heat medium flowing from the battery heat exchanger 10 to the air radiator 41 and the refrigerant radiator 42 also radiates heat to the outside air or the refrigerant flowing in the refrigeration cycle 50 and condenses. The heat medium that has become a liquid in the air radiator 41 or the refrigerant radiator 42 flows through the second liquid passage 221 and flows into the battery heat exchanger 10. Thus, the battery temperature control device 1 of the second embodiment can also cool the battery 2 mounted on the vehicle 3 as in the first embodiment.

Third Embodiment
A third embodiment will be described with reference to FIG. In the third embodiment, the battery temperature control device 1 is configured by a liquid circuit in which a liquid such as water or oil circulates. A liquid such as water or oil is an example of a heat carrier circulating in the liquid circuit.

The battery temperature control device 1 according to the third embodiment includes a battery heat exchanger 10, a first pipe 21, a connection heat exchanger 30, a second pipe 22, an on-vehicle heat source unit 40, and the like. In addition to that, the battery temperature control device 1 of the third embodiment includes the first pump 25 provided in the middle of the first pipe 21, and the second pump 26 and the valve 27 provided in the middle of the second pipe 22. Have. Note that one of the first pump 25 and the second pump 26 can be omitted.

The battery heat exchanger 10, the first pipe 21, the connection heat exchanger 30 and the first pump 25 constitute a first liquid circuit 300. The first pipe 21 has a first forward passage 213 and a first return passage 214 for connecting the battery heat exchanger 10 and the connection heat exchanger 30. When the first pump 25 is driven, the heat medium circulates in the first liquid circuit 300.

The battery heat exchanger 10, the second pipe 22, the on-vehicle heat source 40, the second pump 26, and the valve 27 constitute a second liquid circuit 400. The second pipe 22 has a second forward passage 223 and a second return passage 224 connecting the battery heat exchanger 10 and the connection heat exchanger 30. With the valve 27 open, when the second pump 26 is driven, the heat medium circulates in the second liquid circuit 400. The first liquid circuit 300 and the second liquid circuit 400 communicate with each other, and the same heat medium circulates.

In FIG. 6, the movement of the heat medium when the battery temperature control device 1 cools the battery 2 is indicated by an arrow. That is, the movement of the heat medium shown in FIG. 6 is performed when the battery 2 is being charged in a state where the charging connector 93 provided in the external power supply device 90 is inserted into the charging port 4 provided in the vehicle 3 belongs to. In addition, the movement of the heat medium is a state in which the externally connected heat exchanger 83 is in direct contact with the on-board thermal contact surface 35 or indirectly in thermal contact with the on-board thermal contact surface 35 via the heat conducting member 6. The cold heat is supplied from the externally connected heat exchanger 83 to the on-vehicle thermal contact surface 35.

When the battery 2 generates heat, the heat is absorbed by the heat medium flowing inside the battery heat exchanger 10. When the first pump 25 is driven, the heat medium heated by the battery heat exchanger 10 flows from the battery heat exchanger 10 through the first return path 214 into the connection heat exchanger 30. Further, when the valve 27 is opened and the second pump 26 is driven, the heat medium heated by the battery heat exchanger 10 passes from the battery heat exchanger 10 through the second return path 224 and the air radiator 41 and the liquid are discharged. It flows into the cold radiator 43.

As described above, the external thermal contact surface 84 of the external connection heat exchanger 83 and the on-board thermal contact surface 35 of the connection heat exchanger 30 are in direct thermal contact or indirect thermal contact via the thermal conductive member 6. ing. Therefore, cold heat is supplied from the external heat contact surface 84 of the external heat source supply device 80 to the heat medium flowing through the connection heat exchanger 30 via the on-vehicle heat contact surface 35. Therefore, the heat medium flowing through the connection heat exchanger 30 dissipates heat to the external thermal contact surface 84 via the on-board thermal contact surface 35. The heat medium cooled by the connection heat exchanger 30 flows through the first forward passage 213 and flows into the battery heat exchanger 10.

On the other hand, the heat medium which has flowed to the air radiator 41 radiates heat to the outside air. Further, the heat medium that has flowed to the liquid cooling radiator 43 dissipates heat to the refrigerant flowing in the refrigeration cycle 50. The heat medium respectively cooled by the air radiator 41 and the liquid cooling radiator 43 flows into the battery heat exchanger 10 from the second forward passage 223.

In this way, the heat generated from the battery 2 is transported from the battery heat exchanger 10 to the connecting heat exchanger 30, the air radiator 41 and the liquid cooling radiator 43 by the heat medium, and in each of the devices, external The heat is dissipated to the heat contact surface 84, the outside air, or the refrigerant flowing through the refrigeration cycle 50. Thereby, the battery temperature adjustment device 1 of the third embodiment can cool the battery 2 mounted on the vehicle 3.

In the third embodiment, the movement of the heat medium when the battery temperature adjustment device 1 warms up the battery 2 in the low temperature state at the start of charging in a low temperature environment is not shown by an arrow. At the start of charging in a low temperature environment, the heat is supplied from the external thermal contact surface 84 of the external heat source supply device 80 to the on-board thermal contact surface 35 of the connection heat exchanger 30. As a result, the heat medium flowing through the connection heat exchanger 30 absorbs heat from the on-board thermal contact surface 35 and the external thermal contact surface 84, and the heat medium is heated in the connection heat exchanger 30. By driving the first pump 25, the heat medium heated by the connection heat exchanger 30 flows from the connection heat exchanger 30 through the first return path 214 into the battery heat exchanger 10. The heat medium flowing into the battery heat exchanger 10 dissipates heat to the battery 2. Thereby, the battery 2 is warmed up.

Thus, the heat supplied from the external heat contact surface 84 of the external heat source supply device 80 to the on-vehicle heat contact surface 35 is transported to the battery heat exchanger 10 by the heat medium heated by the connection heat exchanger 30. , Transmitted to the battery 2. As a result, the battery temperature control device 1 of the third embodiment can also warm up the battery 2 mounted on the vehicle 3.

The battery temperature control device 1 according to the third embodiment described above has a simple configuration using a liquid circuit, and uses the heat supplied from the external heat source supply device 80 to measure the temperature of the battery 2 mounted on the vehicle 3 It can be adjusted.

Fourth Embodiment
A fourth embodiment will be described with reference to FIG. The fourth embodiment is different from the first embodiment in that a Peltier device 71 is provided between the external thermal contact surface 84 and the on-board thermal contact surface 35. In the fourth embodiment, heat transfer is performed between the external thermal contact surface 84 and the on-vehicle thermal contact surface 35 via the Peltier device 71. The Peltier device 71 of the fourth embodiment is provided on the external heat contact surface 84 of the external connection heat exchanger 83 provided in the external heat source supply device 80. The Peltier device 71 is driven by supplying power from a Peltier power supply circuit 72 provided in the charging device 70 through the wiring 73.

The case where the battery 2 is cooled in a state where the external thermal contact surface 84, the Peltier element 71, and the on-vehicle thermal contact surface 35 are in direct thermal contact or indirect thermal contact via the thermal conductive member 6 will be described. In FIG. 7, the movement of the heat medium of the gas in the case of cooling the battery 2 is indicated by a broken arrow, and the movement of the heat medium of the liquid is indicated by a solid arrow. When the battery 2 is to be cooled, in the Peltier device 71, the surface 711 on the in-vehicle thermal contact surface 35 side of the Peltier device 71 is a cooling surface, and the surface 712 on the external thermal contact surface 84 of the Peltier device 71 is a heat dissipation surface. . Thereby, when cold heat is supplied from the externally connected heat exchanger 83 to the connected heat exchanger 30, the temperature of the external thermal contact surface 84 of the externally connected heat exchanger 83 is further lowered by the Peltier element 71, and the in-vehicle thermal contact It is possible to supply more cold to the surface 35. Specifically, the temperature of the external thermal contact surface 84 温度 the temperature of the surface 712 on the external thermal contact surface 84 of the Peltier elements 71> the temperature of the surface 711 on the automotive thermal contact surface 35 of the Peltier elements 71.

Next, the case where the battery 2 is warmed up in a state where the external thermal contact surface 84, the Peltier element 71, and the on-vehicle thermal contact surface 35 are in direct thermal contact or indirect thermal contact via the thermal conductive member 6 will be described. . When the battery 2 is warmed up, the surface 711 of the Peltier device 71 on the heat contact surface 35 side of the Peltier device 71 is a heat dissipation surface, and the surface 712 of the Peltier device 71 on the external heat contact surface 84 is a cooling surface Become. As a result, when supplying heat from the externally connected heat exchanger 83 to the connected heat exchanger 30, the temperature of the external thermal contact surface 84 of the externally connected heat exchanger 83 is made higher by the Peltier element 71, and It is possible to supply more heat to the contact surface 35. Specifically, the temperature of the external thermal contact surface 84 ≦ the temperature of the surface 712 of the Peltier element 71 on the external thermal contact surface 84 side <the temperature of the surface 711 of the Peltier element 71 on the thermal contact surface 35 side.

In the battery temperature control device 1 of the fourth embodiment described above, the cold heat or heat supplied from the external heat source supply device 80 to the connection heat exchanger 30 can be increased by the Peltier element 71. Therefore, the battery temperature control device 1 can enhance the temperature control capability of the battery 2.

Fifth Embodiment
The fifth embodiment will be described with reference to FIG. The fifth embodiment is different from the fourth embodiment in that the Peltier element 75 is provided on the on-board thermal contact surface 35 of the connection heat exchanger 30 instead of on the external thermal contact surface 84. The Peltier device 75 is driven by power supplied from a power supply circuit (not shown) provided in the vehicle 3.

In the fifth embodiment, a Peltier liquid circuit 730 for cooling a surface 752 of the Peltier element 75 opposite to the thermal contact surface 35 is provided. The Peltier liquid circuit 730 is configured of a Peltier heat exchanger 76, a pump 77, a pipe 78, a radiator 79, and the like. The Peltier heat exchanger 76 is provided on a surface 752 of the Peltier element 75 opposite to the thermal contact surface 35.

When the pump 77 is driven, the liquid medium circulates in the Peltier liquid circuit 730. The liquid medium circulating in the Peltier liquid circuit 730 is cooled by radiating heat to the air by the radiator 79. The liquid medium flowing from the radiator 79 into the Peltier heat exchanger 76 via the piping 78 exchanges heat with the surface 752 of the Peltier element 75 opposite to the thermal contact surface 35 and cools the surface. .

At the time of charging of the battery 2, the battery 2 in a state where the external thermal contact surface 84 of the external heat source supply device 80 and the Peltier heat exchanger 76 are in direct thermal contact or indirect thermal contact via the thermal conduction member 6. The case of cooling the In FIG. 7, the movement of the heat medium of the gas in the case of cooling the battery 2 is indicated by a broken arrow, and the movement of the heat medium of the liquid is indicated by a solid arrow. When the battery 2 is to be cooled, in the Peltier element 75, the surface 751 on the in-vehicle thermal contact surface 35 side of the Peltier element 75 is a cooling surface, and the surface 752 on the Peltier heat exchanger side of the Peltier element 75 is a heat dissipation surface. . As a result, the temperature of the external thermal contact surface 84 can be further lowered by the Peltier device 75 to supply a larger amount of cold heat to the on-vehicle thermal contact surface 35. Specifically, the temperature of the external thermal contact surface 84 温度 the temperature of the Peltier heat exchanger 76 温度 the temperature of the surface 752 on the Peltier heat exchanger side of the Peltier element 75> the on-vehicle thermal contact surface 35 of the Peltier element 75 The temperature of the surface 751 is

Furthermore, the battery temperature control device 1 of the fifth embodiment cools the battery 2 by driving the Peltier device 75 and supplying cold heat from the Peltier device 75 to the on-vehicle thermal contact surface 35 even while the vehicle is traveling. Is possible. Also in this case, in the Peltier element 75, the surface 751 on the in-vehicle thermal contact surface 35 side of the Peltier element 75 is a cooling surface, and the surface 752 on the Peltier heat exchanger side of the Peltier element 75 is a heat dissipation surface. When cold heat is supplied from the Peltier element 75 to the on-vehicle thermal contact surface 35 while the vehicle is traveling, the temperature of the liquid medium flowing from the radiator 79 into the Peltier heat exchanger 76 is made lower by the Peltier element 75. It is possible to supply more cold to the contact surface 35. Specifically, the temperature of the liquid medium flowing from the radiator 79 into the Peltier heat exchanger 7676the temperature of the surface 752 on the Peltier heat exchanger side of the Peltier element 75> the on-board thermal contact surface 35 of the Peltier element 75 The temperature of the side surface 751 is obtained. Therefore, the battery temperature control device 1 of the fifth embodiment can enhance the temperature control capability of the battery 2.

Sixth Embodiment
A sixth embodiment will be described with reference to FIG. 9 and FIG. The sixth embodiment shows a control method of the battery temperature adjusting device 1 and the charging device 70.

As shown in FIG. 9, in the vehicle 3 on which the battery temperature control device 1 is mounted, the temperature of the battery 2 is detected by the temperature sensor 7. The temperature of the battery 2 detected by the temperature sensor 7 is transmitted to the battery control device 8 mounted on the vehicle 3. The battery control device 8 is configured to be able to communicate with the charge control device 9 provided in the charging device 70 installed outside the vehicle 3. The charge control device 9 controls the operation of the external power supply device 90 included in the charging device 70 and the operation of the external heat source supply device 80.

The battery control device 8 includes a processor that performs control processing and arithmetic processing, a ROM that stores programs, data, and the like, a microcomputer including a storage unit such as a RAM, and peripheral circuits thereof. The storage unit of the battery control device 8 is configured of a non-transitional substantial storage medium. The battery control device 8 performs various control processing and arithmetic processing based on the program stored in the storage unit, and controls the operation of each device connected to the output port. The same applies to the charge control device 9.

Control processing performed by the battery control device 8 and the charge control device 9 will be described with reference to the flowchart in FIG. This control process is performed at the start of charging and at the time of charging. That is, in this control process, the charging connector 93 of the charging device 70 is inserted into the charging port 4 provided in the vehicle 3, and the external connection heat exchanger 83 makes direct contact or heat conduction with the on-vehicle thermal contact surface 35. It is carried out in a state of indirect thermal contact via the component 6.

The battery control device 8 detects the temperature of the battery 2 by the temperature sensor 7 in step S10. Next, in step S20, the battery control device 8 determines whether the temperature of the battery 2 is within the battery temperature threshold range. The upper limit of the battery temperature threshold is the temperature at which the battery 2 may deteriorate due to the high temperature of the battery 2 as the upper limit, and the lower temperature of the battery 2 where the internal resistance is large and rapid charging can not be performed. It is The battery temperature threshold is set in advance by experiments and the like, and is stored in the storage unit of the battery control device 8. If the battery control unit 8 determines that the temperature of the battery 2 is out of the range of the battery temperature threshold, it transmits that to the charge control unit 9 and shifts the process to step S50.

In step S50, the charge control device 9 performs a cooling operation or a warm-up operation of the battery 2 by the external heat source supply device 80. Specifically, when the temperature of the battery 2 is higher than the battery temperature threshold, cold heat is supplied from the external heat source supply device main body 81 to the on-vehicle thermal contact surface 35 via the external piping 82 and the external connection heat exchanger 83. , And the cooling operation of the battery 2 is performed. On the other hand, when the temperature of the battery 2 is lower than the battery temperature threshold, the heat is supplied from the external heat source supply device body 81 to the on-vehicle thermal contact surface 35 via the external piping 82 and the externally connected heat exchanger 83. Warm-up operation is performed.
After the cooling operation or the warming-up operation of the battery 2 is started in step S50, while the operation is continued, the above-described control processing is repeatedly performed from step S10 again. Thereby, the cooling operation or the warm-up operation of the battery 2 is executed until the temperature of the battery 2 falls within the range of the battery temperature threshold.

If the battery control unit 8 determines in step S20 that the temperature of the battery 2 is within the battery temperature threshold range, it transmits that to the charge control unit 9, and the process proceeds to step S30. In step S30, the charge control device 9 performs quick charging by the external power supply device 90. Specifically, electric power is supplied from the external power supply device main body 91 to the battery 2 mounted on the vehicle 3 via the charging cable 92, the charging connector 93, the charging port 4 and the wiring 5 inside the vehicle. Thereby, the battery 2 is rapidly charged.

In step S40 following step S30, the charge control device 9 performs a cooling operation of the battery 2 by the external heat source supply device 80. Specifically, cold heat is supplied from the external heat source supply device main body 81 to the on-vehicle thermal contact surface 35 through the external pipe 82 and the external connection heat exchanger 83, and the battery 2 is cooled. The cooling operation of the battery 2 is continuously performed until the rapid charge of the battery 2 is completed. In addition, when performing the cooling operation of the battery 2, the battery control device 8 communicates the heat amount supplied from the external heat source supply device 80 to the connection heat exchanger 30 by communication with the charge control device 9 to the temperature of the battery 2. It may be adjusted accordingly. Thereby, the amount of cold heat according to the temperature of the battery 2 is supplied from the external heat source supply device 80 to the battery temperature adjustment device 1. Therefore, it is possible to prevent the temperature of the battery 2 from being out of the range of the battery temperature threshold during rapid charging.

In the sixth embodiment described above, the battery control device 8 and the charge control device 9 perform the external heat source supply device until the temperature of the battery 2 falls within the predetermined battery temperature threshold before the rapid charging of the battery 2 is started. Control is performed to supply cold or warm heat to the connection heat exchanger 30. Further, the battery control device 8 and the charge control device 9 control the external power supply device 90 to start the rapid charging of the battery 2 after the temperature of the battery 2 falls within the predetermined battery temperature threshold range. . This prevents the battery 2 from becoming hot and deteriorating during rapid charging. In addition, even in a low temperature environment, quick charging can be performed after the battery 2 is warmed up.

In the control process described above, battery control unit 8 determines whether the temperature difference between the plurality of battery cells is smaller than a predetermined battery cell temperature threshold before starting the rapid charging and during the rapid charging operation. May be determined. The inter-battery cell temperature threshold is a temperature at which the battery 2 may be degraded because the temperature of some of the plurality of battery cells is high. The inter-battery cell temperature threshold is set in advance by experiments or the like, and stored in the storage unit of the battery control device 8. If the battery control unit 8 determines that the temperature difference between the plurality of battery cells is smaller than the battery cell temperature threshold before the rapid charge start, it transmits that to the charge control unit 9, and the battery 2 by the external heat source supply unit 80. Perform cooling operation or warm-up operation. Thereby, it can prevent that the battery 2 degrades by the temperature difference of several battery cells becoming large. During the rapid charge, the battery control device 8 controls the amount of cold heat supplied from the external heat source supply device 80 to the connection heat exchanger 30 such that the temperature difference between the plurality of battery cells becomes smaller than the inter-battery cell temperature threshold. This prevents the temperature difference between the plurality of battery cells from becoming large.

Seventh Embodiment
A seventh embodiment will be described with reference to FIG. The seventh embodiment describes a charging device 70 installed outside the vehicle 3. The charging device 70 includes an external power supply device 90 and an external heat source supply device 80.

The external power supply device 90 includes an external power supply device main body 91, a charging cable 92, a charging connector 93, and the like. Electric power is supplied to the external power supply main body 91 from a power plant (not shown) via the substation 95 and the like. The charging connector 93 provided in the external power supply device 90 can be inserted into the charging port 4 provided in the vehicle 3. In that state, external power supply device 90 is connected to battery 2 mounted on vehicle 3 from external power supply device main body 91 through charging cable 92, charging connector 93, charging port 4 and wiring 5 inside the vehicle. Supply power. Thus, the external power supply device 90 can charge the battery 2 mounted on the vehicle 3.

The external heat source supply device 80 is installed in the charging device 70 together with the external power supply device 90. The external heat source supply device 80 supplies cold heat or heat to the battery temperature control device 1 mounted on the vehicle 3. The external heat source supply device 80 includes a heat medium circuit 800 in which a heat medium such as water, oil or liquid nitrogen flows. The heat source control device 801 controls the operation of each component of the heat medium circuit 800. The heat medium circuit 800 includes a pump 802, a first valve 803, a radiator 804, a chiller 805, a heat retention tank 806, a second valve 807, an externally connected heat exchanger 83, and the like connected by a pipe 809. The pump 802 circulates the heat medium to the heat medium circuit 800. The first valve 803 switches the flow path so that the heat medium flowing out of the pump 802 flows to the radiator 804 or the chiller 805. The radiator 804 exchanges heat between the outside air blown by the fan 810 and the heat medium to cool the heat medium. The radiator 804 is an example of a heat source unit for supplying cold heat to the heat medium.

The chiller 805 cools the heat medium by heat exchange between the low-temperature low-pressure refrigerant flowing in the refrigeration cycle 811 and the heat medium. In the refrigeration cycle 811, the refrigerant compressed by the compressor 812 is radiated to the outside air by the condenser 813 and then decompressed and expanded by the expansion valve 814. The refrigerant absorbs heat from the heat medium flowing through the chiller 805. Thus, the heat medium is cooled by heat exchange with the refrigerant circulating in the refrigeration cycle 811. Therefore, the refrigeration cycle 811 is also an example of a heat source unit for supplying cold heat to the heat medium. In addition, it is also possible to employ a Peltier device or a coolant circuit (not shown) as a heat source unit for supplying cold heat to the heat medium. The heat medium cooled by the heat source unit such as the radiator 804 or the refrigeration cycle 811 flows through the pipe 809 and is stored in the heat retention tank 806.

The heat retention tank 806 can store the heat medium at a predetermined temperature state. The temperature sensor 816 detects the temperature of the heat medium stored in the heat retention tank 806. The temperature of the heat medium of the heat retention tank 806 detected by the temperature sensor 816 is transmitted to the heat source control device 801. The heat retention tank 806 is set to a size capable of storing a cold heat amount corresponding to the calorific value of the battery 2 at the time of quick charge. As a result, the external heat source supply device 80 stores the heat medium brought into a predetermined temperature state in the heat insulation tank 806, thereby rapidly charging the battery 2 in a short time for temperature control. Sometimes you can cope.

The heat medium flowing out of the heat retention tank 806 flows to the externally connected heat exchanger 83 via the second valve 807. The second valve 807 switches the flow path so that the heat medium flowing out of the heat retention tank 806 flows to the externally connected heat exchanger 83 or the pump 802. The external connection heat exchanger 83 has an external thermal contact surface 84 which can be in direct thermal contact with the on-vehicle thermal contact surface 35 provided on the vehicle 3 or indirectly through the thermal conductive member 6. The external connection heat exchanger 83 can transfer the heat supplied by the heat medium flowing through the pipe 809 and the external pipe 82 from the external thermal contact surface 84 to the on-vehicle thermal contact surface 35.

The power supplied to the charging device 70 is stored in the storage battery 820 for the external heat source supply device 80 separately from the external power supply device main body 91. The electric power stored in storage battery 820 drives pump 802 provided in heat medium circuit 800, fan 810 of radiator 804, compressor 812 and fan 817 of refrigeration cycle 811, first valve 803, second valve 807, etc. Do. The storage battery 820 stores power capable of driving those devices at the time of quick charge. Thus, the external heat source supply device 80 can be driven by the power stored in the storage battery 820 even when large power is used for the external power supply device main body 91 at the time of rapid charging.

The charging device 70 of the seventh embodiment described above corresponds to the battery temperature control device 1 described in the first to sixth embodiments.

(Other embodiments)
The present disclosure is not limited to the embodiments described above, and can be modified as appropriate. Further, the above embodiments are not irrelevant to each other, combination unless obviously impossible, can be appropriately combined. In each of the above embodiments, the elements constituting the embodiments, unless such case considered if explicitly and in principle clearly essential to be essential, it is not necessarily indispensable needless to say Yes. Further, in the above embodiments, when numerical values such as the number, numerical value, amount, range, etc. of constituent elements of the embodiment are mentioned, it is clearly indicated that they are particularly essential and clearly limited to a specific number in principle. It is not limited to the specific number except when it is done. In each of the above embodiments, the shape of the components, when referring to a positional relationship or the like, except in particular clearly the case and principle specific shape, etc. If to be limited to the positional relationship or the like, the shape, It is not limited to the positional relationship and the like.

(1) In the other embodiment, the external heat contact surface 84 of the external connection heat exchanger 83 provided in the external heat source supply device 80 and the on-vehicle heat contact surface 35 of the connection heat exchanger 30 provided in the battery temperature adjustment device 1 are , It does not restrict to what thermal contact mutually. For example, the external thermal contact surface 84 may be in thermal contact only with the upper portion of the in-vehicle thermal contact surface 35 of the connection heat exchanger 30 included in the battery temperature adjustment device 1 or the in-vehicle thermal contact of the connection heat exchanger 30 The external thermal contact surface 84 may be in thermal contact with only the lower portion of the surface 35.

(2) In another embodiment, the battery temperature adjustment device 1 may be configured such that a plurality of battery heat exchangers 10 are connected to one connection heat exchanger 30 via piping. In that case, the plurality of battery heat exchangers 10 may be connected in parallel or in series to one connection heat exchanger 30.

(Summary)
According to the first aspect of the present invention described in part or all of the above embodiments, the battery temperature control device is mounted on the vehicle using heat supplied from an external heat source supply device installed outside the vehicle. Adjust the battery temperature. The battery temperature control apparatus includes a battery heat exchanger, piping, and a connection heat exchanger. The battery heat exchanger exchanges heat between the battery and the heat medium. The piping is connected to the battery heat exchanger, and the heat medium flows. The connection heat exchanger has an on-board thermal contact surface that can be in direct thermal contact with the external thermal contact surface of the external heat source supply device or indirectly through a thermal conductive member. The connection heat exchanger cools or heats the heat medium flowing through the pipe by the heat transmitted from the external thermal contact surface of the external heat source supply device through the on-board thermal contact surface.

According to the second aspect, the battery temperature control apparatus further includes a pump provided in the middle of the pipe. The piping has a forward passage and a return passage connecting the battery heat exchanger and the connection heat exchanger. The battery heat exchanger, the forward passage, the return passage, the connection heat exchanger, and the pump constitute a liquid circuit in which a liquid heat medium circulates. According to this, the battery temperature control device can adjust the temperature of the battery mounted on the vehicle by using the cold heat or the heat supplied from the external heat source supply device with a simple configuration using the liquid circuit. .

According to a third aspect, the pipe has a liquid passage and a gas passage. The liquid passage includes an outlet / inlet provided below the liquid surface of the heat medium in the battery heat exchanger, and an outlet / inlet provided below the liquid surface of the heat medium in the connected heat exchanger. Connect The gas passage connects an outlet / inlet provided above the liquid surface of the heat medium in the battery heat exchanger and an outlet / inlet provided above the liquid surface of the heat medium in the connected heat exchanger. Do. The battery heat exchanger, the piping, and the connection heat exchanger constitute a thermosyphon circuit in which a heat medium circulates. The liquid surface of the heat medium circulating in the thermosyphon circuit is located midway in the flow path inside the battery heat exchanger, and also midway in the flow path inside the connection heat exchanger.

According to this, the heat medium can perform both evaporation and condensation in the flow path inside the battery heat exchanger. Also, in the flow path inside the connecting heat exchanger, the heat medium can perform both evaporation and condensation. Therefore, the battery temperature control device can perform both cooling and warming-up of the battery by cold heat or heat transferred from the external heat contact surface of the external heat source supply device to the connection heat exchanger through the on-vehicle heat contact surface. It is. Therefore, the battery temperature control device has a high heat transfer efficiency using a thermosyphon circuit, and can adjust the temperature of the battery mounted on the vehicle using the heat supplied from the external heat source supply device.

According to the fourth aspect, the battery temperature control apparatus further includes an on-vehicle heat source unit. The on-vehicle heat source unit is mounted on a vehicle, is configured such that the heat medium flows through the pipe, and cools or heats the heat medium flowing through the pipe by heat exchange between the heat medium and the other heat medium.

According to this, according to the state of the vehicle when charging and discharging the battery and the heat generation state of the battery, the battery temperature control device adjusts the temperature of the battery using the on-vehicle heat source unit as a heat source, and supplies the external heat source. The temperature control of the battery which made the apparatus a heat supply can be used properly. For example, when charging the battery from the external power supply device while the vehicle is stopped, when the calorific value of the battery is large, temperature control of the battery is performed using both the external heat source supply device and the on-vehicle heat source unit as heat sources. In addition, when the battery is charged from the external power supply device while the vehicle is stopped, the calorific value of the battery is small, and when the passenger is in the car, the battery using the external heat source supply device as a heat supply source The temperature control may be performed, and the on-vehicle heat source unit may be used as a heat source of the indoor air conditioning system. On the other hand, when the battery generates heat due to charge and discharge when the vehicle is traveling, it is possible to adjust the temperature of the battery using the on-vehicle heat source unit as a heat supply source.

According to the fifth aspect, the on-vehicle heat source unit is a refrigerant radiator connected to an evaporator provided in a refrigeration cycle mounted on a vehicle, a liquid-cooled radiator connected to a liquid circuit mounted on a vehicle, air radiation Or a Peltier element. According to this, it is possible to adopt various configurations as the on-vehicle heat source unit.

According to the sixth aspect, the battery temperature control apparatus further includes a Peltier element provided between the external thermal contact surface and the on-board thermal contact surface. According to this, it is possible to increase cold heat or heat supplied from the external heat source supply device to the connection heat exchanger by the Peltier element. For example, in the case where cold heat is supplied from the external heat source supply device to the connection heat exchanger, it is possible to supply larger cold heat to the on-vehicle thermal contact surface, with the temperature of the external thermal contact surface being lower by the Peltier element. is there. Moreover, when supplying heat from the external heat source supply device to the connection heat exchanger, it is possible to supply larger heat to the on-vehicle thermal contact surface, with the temperature of the external thermal contact surface being a higher temperature by the Peltier element. is there. Therefore, the battery temperature control device can enhance the temperature control capability of the battery.

According to the seventh aspect, the battery is configured to be chargeable by the power supplied from the external power supply device installed outside the vehicle. The battery temperature control device includes a battery control device that can communicate with a charge control device that controls the drive of the external power supply device and the drive of the external heat source supply device. The battery control unit communicates with the charge control unit during rapid charge of the battery so that the external heat source supply unit cools or heats the connected heat exchanger until the battery temperature falls within the predetermined battery temperature threshold range. Control to supply. Further, the battery control device controls the external power supply device to start the rapid charging of the battery after the temperature of the battery reaches a predetermined battery temperature threshold value by communication with the charge control device.

According to this, when the battery is rapidly charged when the temperature of the battery is high, the battery may be degraded. On the other hand, when the temperature of the battery is low, the internal resistance of the battery is large, and rapid charging can not be performed. Therefore, at the time of rapid charge of the battery, the battery control device controls to start rapid charge after setting the temperature of the battery to a predetermined chargeable temperature using an external heat source supply device by communication with the charge control device. Do.

According to the eighth aspect, the battery control device adjusts the amount of heat supplied from the external heat source supply device to the connected heat exchanger according to the temperature of the battery by communication with the charge control device. According to this, the battery control device can appropriately control the amount of heat supplied from the external heat source supply device by communicating with the charge control device, and can bring the battery into a predetermined temperature range that can be charged in a short time .

According to the ninth aspect, the external heat source supply device installed outside the vehicle includes the pump, the heat source unit, the heat retention tank, and the externally connected heat exchanger. The pump circulates the heat medium through the heat medium circuit. The heat source cools or heats the heat medium flowing through the heat medium circuit. The heat retention tank stores the heat medium cooled or heated by the heat source unit at a predetermined temperature. The external connection heat exchanger has an external thermal contact surface which can be in direct thermal contact with the on-board thermal contact surface provided in the vehicle or indirectly through a thermal conductive member. The externally connected heat exchanger can then transfer the heat supplied by the heat medium flowing through the heat medium circuit from the external heat contact surface to the on-vehicle heat contact surface.

According to this, the external heat source supply device copes with the time of rapid charging which requires a large capacity in a short time for temperature control of the battery by storing the heat medium brought into the predetermined temperature state in the heat retention tank. be able to.

According to the tenth aspect, the external heat source supply device further includes a storage battery that stores power for driving the pump and the heat source unit. According to this, the external heat source supply device stores the electric power in the storage battery at the time other than the time of the rapid charge, and stores it in the storage battery also at the time of the rapid charge that requires a large electric power to charge the battery. Power can be used to cool the battery.

Claims

A battery temperature control apparatus that adjusts the temperature of a battery (2) mounted on the vehicle using heat supplied from an external heat source supply device (80) installed outside the vehicle (3),
A battery heat exchanger (10) for exchanging heat between the battery and a heat medium;
Piping (21, 22) connected to the battery heat exchanger and through which a heat medium flows;
It has an on-board thermal contact surface (35) which can be in direct thermal contact with the external thermal contact surface (84) of the external heat source supply device or indirectly via the thermal conduction member (6), the external thermal contact surface And a connection heat exchanger (30) for cooling or heating the heat medium flowing through the pipe by the heat transmitted from the on-board thermal contact surface.
It further comprises a pump (25) provided in the middle of the piping,
The piping has a forward passage (213) and a return passage (214) connecting the battery heat exchanger and the connection heat exchanger,
The battery according to claim 1, wherein the battery heat exchanger, the forward passage, the return passage, the connection heat exchanger, and the pump constitute a liquid circuit (300) in which a heat medium of liquid circulates. Temperature control device.
The piping is
The outflow inlet (121) provided below the liquid surface (FL1) of the heat medium in the battery heat exchanger, and the liquid surface (FL2) of the heat medium in the connected heat exchanger. A fluid passage (211) connecting the outlet (321) provided in the
The outlet / inlet (111) provided above the liquid surface of the heat medium in the battery heat exchanger, and the outlet / inlet (311) provided above the liquid surface of the heat medium in the connected heat exchanger. And a gas passage (212) connecting the
The battery heat exchanger, the pipe, and the connection heat exchanger constitute a thermosyphon circuit (100) in which a heat medium circulates,
The liquid level (FL1, FL2) of the heat medium circulating in the thermosyphon circuit is located midway in the flow path inside the battery heat exchanger, and midway in the flow path inside the connection heat exchanger The battery temperature control device according to claim 1, which is located in
The on-vehicle heat source unit (40) is mounted on the vehicle, configured to flow the heat medium through the pipe, and performs heat exchange between the heat medium and another heat medium to cool or heat the heat medium flowing through the pipe. The battery temperature control device according to any one of claims 1 to 3, comprising.
The on-vehicle heat source unit is connected to a refrigerant radiator (42) connected to an evaporator (51) provided in a refrigeration cycle (50) mounted on the vehicle, and a liquid circuit (400) mounted on the vehicle The battery temperature control device according to claim 4, which is constituted by a liquid cooling radiator (43), an air radiator (41), or a Peltier element (75).
The battery temperature control device according to any one of claims 1 to 5, further comprising a Peltier element (71, 75) provided between the external thermal contact surface and the on-vehicle thermal contact surface.
The battery is configured to be chargeable by the power supplied from an external power supply device (90) installed outside the vehicle,
The battery temperature control device further includes a battery control device (8) capable of communicating with a charge control device (9) that controls the drive of the external power supply device and the drive of the external heat source supply device,
In the battery control device, the external heat source supply device is connected to the connection heat exchanger until the temperature of the battery falls within a predetermined battery temperature threshold range by communication with the charge control device at the time of rapid charge of the battery. Control to supply cold heat or heat (S50),
The external power supply device controls the battery so as to start rapid charging of the battery after the temperature of the battery reaches a predetermined battery temperature threshold (S30), any one of claims 1 to 6, Battery temperature controller as described in 5.
The battery control device adjusts the amount of heat supplied by the external heat source supply device to the connection heat exchanger according to the temperature of the battery by communication with the charge control device (S40). Battery temperature control device as described.
An external heat source supply device installed outside the vehicle,
A pump (802) for circulating the heat medium to the heat medium circuit (800);
A heat source unit (804, 811) for cooling or heating the heat medium flowing through the heat medium circuit;
A heat retention tank (806) for storing the heat medium cooled or heated by the heat source section at a predetermined temperature state;
It has an external thermal contact surface (84) which can be in direct thermal contact with the on-vehicle thermal contact surface provided in the vehicle or indirectly via the thermal conduction member, and is supplied by the thermal medium flowing through the thermal medium circuit An externally connected heat exchanger (83) capable of transferring heat from the external thermal interface to the on-board thermal interface.
The external heat source supply device according to claim 9, wherein the external heat source supply device further comprises a storage battery (820) for storing the electric power for driving the pump and the heat source unit.