JP5427021B2 - Battery temperature control device - Google Patents

Description

  The present invention relates to a battery temperature adjusting device equipped in an electric vehicle or a hybrid electric vehicle.

Electric vehicles (hereinafter referred to as “EV”) and hybrid electric vehicles (Hybrid)
A battery for traveling, which is mounted on an electric vehicle (hereinafter referred to as “HEV”), is generally accompanied by a cooling device because a large current flows during rapid charging and the battery itself generates heat.

  By the way, the battery for driving | running | working exists in the tendency for the charge amount per unit time to increase by the request | requirement of extension of a mileage, or the request | requirement of shortening of charge time. Therefore, the amount of heat generated from the battery at the time of charging is increased, the charging efficiency is lowered, and the life of the battery is shortened. Therefore, the cooling device is required to ensure and improve the cooling performance.

  As this type of battery cooling device, a water cooling type and an air cooling type are known. From the viewpoint of obtaining a large amount of heat exchange per unit time with the battery, interest in the water cooling type cooling device is increasing ( As a water-cooled type, refer to the following Patent Document 1).

  In addition, lithium-based, nickel-hydrogen-based, sodium-sulfur storage batteries, and the like have been developed as traveling batteries, but these batteries are different from conventional batteries for internal combustion engines, for example, those with specifications of 100 V or 350 V are used. In the unlikely event that an accident occurs in EV or HEV, it is essential to prevent electric shock so that passengers and rescuers do not get electric shock.

  Conventionally, as a measure for preventing an electric shock as described above, the impact at the time of a vehicle collision is sensed, the battery circuit is cut off or the wiring of the battery circuit is changed to lower the voltage, the impact at the time of the vehicle crash is sensed, and the battery In order to prevent the scattering of the electrolyte due to damage to the battery itself, a coolant, neutralizing agent, absorbent, digestive agent, etc., is sprayed toward the battery (the latter patent document is described later) 2).

JP 7-105988 A Japanese Patent Laid-Open No. 9-074603

  However, in the above-described prior art, the battery cooling device is damaged due to the impact of the EV or HEV vehicle collision, and the battery electrolyte or chemicals are scattered and infiltrated between the battery terminals to be conducted. It has been difficult to avoid problems derived from the liquid use system of the water-cooled cooling device, such as electric shocks from passengers and rescuers.

  Accordingly, the present invention provides a battery temperature adjusting device for EV or HEV that can prevent an electric shock due to conduction between battery terminals in the event of a vehicle collision in a liquid usage system of this type of battery cooling device. .

The invention described in the first claim of the present application is described with the reference numerals used in the embodiments, and the first heat that fills the pipe 3 with the liquid heat medium 40 and exchanges heat with the battery B using the heat medium 40. A first heat exchanging unit 1 having an exchanging unit 2; a second heat exchanging unit 20 having a second heat exchanging unit 21 that radiates or cools the heat medium 40 that has exchanged heat in the first heat exchanging unit 2; In the battery temperature control device having,
The first heat exchange unit 1 includes a heat medium reservoir 4 and a pump 5 that circulates the heat medium 40 of the heat medium reservoir 4 in the pipe 3.
For example, when the battery is charged when the vehicle is stopped, the pump 5 is operated to circulate the heat medium 40 in the pipe 3.
The battery temperature adjusting device is configured to discharge at least the heat medium 40 in the first heat exchange unit 2 to the outside of the first heat exchange unit 2 when the battery is not charged.

  The invention described in claim 2 of the present application is that, in the invention of claim 1, the heat medium storage unit 4 is configured to be installed below the first heat exchange unit 2, and when the battery is not charged, The battery temperature adjusting device is configured to discharge the heat medium 40 in the first heat exchange unit 2 from the first heat exchange unit 2 to the heat medium storage unit 4.

  The invention described in claim 3 of the present application is that, in the invention of claim 1, the air communication port 3a is provided above the first heat exchange unit 1, and the heat medium storage unit 4 is provided with the first heat exchange unit. The heat medium 40 in the first heat exchange unit 2 is discharged from the first heat exchange unit 2 to the heat medium storage unit 4 when the battery is not charged. This is a battery temperature control device.

  The invention described in claim 4 of the present application is the invention described in any one of claims 1 to 3, wherein the first heat exchange unit 2 of the first heat exchange unit 1 and the second heat The exchange unit 21 is connected by a pipe 3, the three-way valve 7 is provided in the connected pipe, and a pipe having a first opening 3 b to the heat medium storage part 4 is provided on one side of the three-way valve 7, A temperature control device for a battery in which a pipe having a second opening 3c to the heat medium reservoir 4 is branched and provided on either the upper or lower side of the three-way valve, and an on-off valve 8 is provided in the vicinity of the second opening 3c. It is.

  The invention described in claim 5 of the present application is the battery temperature adjusting device according to any one of claims 1 to 4, wherein the heat medium storage unit 4 is detachably provided.

  According to the first aspect of the present invention, when the battery is charged, the pump is operated to circulate the heat medium in the pipe, so that the battery is cooled. In addition, when the battery is not charged, the heat medium is discharged to the outside of the first heat exchanging unit. Therefore, even if the EV or HEV system is damaged due to a collision accident or the like, There is no possibility that the heat medium leaks from the heat exchange part, and therefore an electric shock that may occur when the heat medium leaks in the first heat exchange part can be avoided.

  Before starting the charging of the battery, when the pump is operated, the heat medium is sucked from the heat medium storage part, and the inside of the path of the temperature control device, that is, the first heat exchange part, the second heat exchange part, the pump, and these are connected It is possible to fill the inside of the path formed by the piping to be performed.

  According to the invention described in claim 2 of the present application, when the battery is not charged, the heat medium is discharged to the heat medium storage part installed below the first heat exchange part. Even when the system is damaged due to an accident or the like, there is no possibility that the heat medium leaks from the first heat exchange section, and an electric shock accident can be avoided.

  According to the third aspect of the present invention, when the battery is not charged, the heat medium flows down to the heat medium storage section below due to its own weight and is discharged from the first heat exchange section. At this time, since the air communication port is provided above the first heat exchange unit, air flows into the first heat exchange unit, and the flow of the heat medium to the heat medium storage unit is promoted. As a result, even if the system is damaged due to a collision accident or the like, there is no heat medium in the first heat exchanging section, so naturally there is no possibility of the heat medium leaking out and avoiding an electric shock accident. Can do.

  According to the fourth aspect of the present invention, when the battery is charged, the opening 3b side of the three-way valve is closed and the on-off valve is closed, and the pump is operated to circulate the heat medium. The heat medium passes through the pump and the second heat exchange unit, reaches the first heat exchange unit, performs heat exchange with the battery, and reaches the pump again through the three-way valve.

  When the battery is not charged, the opening 3b side of the three-way valve is opened, the on-off valve is opened, and the pump is reversed to reverse the heat medium. As a result, the heat medium flows down to the heat medium storage part below and is discharged from the first heat exchange part. Alternatively, an air communication port may be separately provided above the first heat exchange unit, air may flow into the first heat exchange unit, and the heat medium may flow down to the heat medium storage unit.

  Before starting the charging of the battery, only the opening 3b side of the three-way valve is opened and the on-off valve is opened to operate the pump. As a result, the heat medium is sucked from the heat medium reservoir through the opening 3c and can fill the inside of the path of the temperature adjusting device.

  In this way, even if the system is damaged due to a collision accident or the like, there is no heat medium in the first heat exchange section, so there is no possibility of the heat medium leaking out and avoiding an electric shock accident. Can do.

  Moreover, since the three-way valve and the opening / closing valve are provided in the first heat exchange unit, the circulation cycle of the heat medium can be configured in the unit by opening / closing these opening / closing valves as appropriate.

  According to the invention described in claim 5 of the present application, since the heat medium storage section is detachably provided, the weight of the vehicle can be reduced by removing it when the battery is not charged, that is, during running. In addition, it is possible to avoid the generation of unintended sound generated by the heat medium due to vehicle running vibration.

  Further, as described above, since the three-way valve and the on-off valve are provided in the first heat exchange unit, even if the heat medium reservoir is removed, the heat medium circulation cycle in the unit is not hindered.

  Hereinafter, the present invention will be described based on illustrated embodiments. FIG. 1 is an overall configuration diagram showing the temperature adjustment device of the present example, and includes a first heat exchange unit 1 and a second heat exchange unit 20. The first heat exchange unit 1 includes a first heat exchange unit 2 that fills a pipe 3 with a liquid heat medium 40 and exchanges heat with the battery B using the heat medium 40. The second heat exchange unit 20 includes a second heat exchange unit 21 that radiates or cools the heat medium 40 heat-exchanged by the first heat exchange unit 2. The heat medium is, for example, water or antifreeze, but is not particularly limited thereto.

  The first heat exchange unit 1 includes a heat medium storage unit 4 provided on the downstream side of the first heat exchange unit 2 and a pump 5 that circulates the heat medium 40 of the heat medium storage unit 4 in the pipe 3. Prepare.

  In this example, the battery is rapidly charged by a battery charging stand (not shown). That is, the rapid charging of the battery that is performed in a short time is performed when the vehicle is stopped, and the temperature of the battery rapidly rises. However, in the case of battery charging by regenerative power generation when the vehicle is running, so-called slow charging is performed. With this, even if the temperature of the battery rises, the temperature rise is not so much as to cause a malfunction of the battery.

  When charging the battery of this example, particularly during rapid charging, the pump 5 is operated to circulate the heat medium in the pipe 3, whereby heat exchange with the battery B is performed by the heat medium 40 in the first heat exchange unit 2. Made.

  In the case of this example, when the battery is not charged, at least the heat medium 40 in the first heat exchange unit 2 is discharged from the first heat exchange unit.

  Thus, according to the temperature adjusting device of the present example, when the battery is charged, the pump 5 is operated to circulate the heat medium 40 in the pipe 3, so that the battery B is cooled. In addition, when the battery is not charged, the heat medium 40 is discharged to the outside of the first heat exchanging unit 2. Therefore, even if the system is damaged due to a collision accident or the like, the first heat exchange is not performed. There is no possibility that the heat medium 40 leaks from the portion 2. Therefore, it is possible to avoid an electric shock accident that may occur when the heat medium leaks at the first heat exchange section.

  The second heat exchange unit 20 includes the second heat exchange unit 21 as described above, and includes a compressor 22 that compresses the refrigerant, and a condenser 23 that cools the refrigerant compressed by the compressor 22. And a decompressor 24a that decompresses and expands the refrigerant cooled by the condenser 23, and an evaporator 25 that evaporates the refrigerant decompressed by the decompressor 24a. The compressor 22 is driven by a motor (not shown). In addition, as the refrigerant used in the second heat exchange unit, chlorofluorocarbon, carbon dioxide, hydrocarbon, or the like is appropriately used.

  In FIG. 1, reference numeral 26 denotes a switching valve. By switching the switching valve 26, temperature control can be performed in the second heat exchange unit 21. Therefore, the temperature adjustment of the battery B can also be performed in the first heat exchanging unit 2 by this temperature adjustment, so that the battery temperature can be appropriately kept constant to increase the charge / discharge efficiency of the battery.

  For example, if the refrigerant discharged from the compressor 22 and passing through the condenser 23 is caused to flow to the second heat exchange unit 21 by the switching valve 26, the refrigerant is decompressed by the decompressor 24 b upstream of the second heat exchange unit 21. Then, it evaporates in the second heat exchanging portion 21 and cools the heat exchanging unit 1 and can return it to the compressor 22. Further, by appropriately changing the discharge amount of the refrigerant from the compressor 22 and the setting conditions of the decompressor 24b upstream of the second heat exchange unit 21, the first heat exchange unit 1 in the second heat exchange unit 21 is changed. The amount of cooling can be controlled.

  Moreover, you may distribute the refrigerant | coolant discharged from the compressor 22 via the condenser 23 to both the 2nd heat exchange part 21 and the evaporator 25 with the switching valve 26 as needed.

  In the battery temperature adjusting apparatus shown in FIG. 1, the heat medium storage unit 4 shows an example in which the upper part is open, but this shows a conceptual configuration of the apparatus, and the heat medium storage unit is not limited thereto. Needless to say, a so-called closed circuit (closed circuit) can be formed by closing the upper portion of 4.

  Further, in the battery temperature adjusting device of this example, the heat medium storage unit 4 may be installed below the first heat exchange unit 2. When the battery is not charged, the heat medium 40 in the first heat exchange unit 2 is discharged from the first heat exchange unit to the heat medium storage unit 4. With this configuration, since the heat medium 40 is discharged to the heat medium storage unit when the vehicle is traveling, the heat medium 40 leaks from the first heat exchange unit even if the system is damaged due to a collision accident or the like. There is no risk of getting out, and an electric shock accident can be avoided.

  Moreover, in the temperature control apparatus of the battery of this example, you may provide the heat medium storage part 4 so that removal is possible. That is, when the battery is not charged, the heat medium 40 is discharged to the outside of the first heat exchanging unit 2 and stored in the heat medium storage unit 4. Therefore, the heat medium storage unit 4 is not charged or is running. If removed, the weight of the vehicle can be reduced. At the same time, such an inconvenience can be avoided where unintended sound is generated from the heat medium due to vehicle running vibration.

  The battery temperature control device shown in FIGS. 2 to 4 is provided with an air communication port above the first heat exchange unit 1, and the heat medium storage unit 4 is located below the first heat exchange unit 2 as in the previous example. When the battery is not charged, the heat medium 40 in the first heat exchange unit 2 is discharged from the first heat exchange unit 2 to the heat medium storage unit 4.

  In this example, the atmosphere communication port 3 a is provided at the top of the pipe 3. In addition, one opening 3 b of the pipe 3 is located in the upper part of the heat medium storage part 4, and the other opening 3 c of the pipe 3 is located in the lower part of the heat medium storage part 4.

  As shown in FIGS. 5 and 6, the first heat exchanging unit 2 of this example is configured by arranging a heat exchanging core 6 on the upper portion of each block in which a predetermined number of batteries B are arranged vertically. Yes.

  The heat exchange core 6 is formed by using aluminum plates 61 and 61 having the same structure and brazing one plate 61 to the other plate 61 with the top and bottom reversed. The heat exchange core 6 includes a pair of left and right header parts 62, 62, a plurality of flow paths 63, 63 provided in the header parts 62, 62, and partition parts 64, 64 provided between the flow paths 63, 63. I have. In this example, an aqueous solution is used as the heat medium 40, and at the time of rapid charging of the battery, the heat medium (aqueous solution) flows from one header portion 62 to the flow paths 63 and 63 as indicated by arrows in FIG. It is configured to flow to the other header section 62 via the.

  Moreover, each heat exchange core 6 is arrange | positioned slightly diagonally, as shown in FIGS. As described above, when the heat medium 40 in the first heat exchange unit 2 is discharged to the heat medium storage unit 4 when the battery is not charged, the heat medium can flow down by its own weight. Is.

  In the battery temperature adjusting device shown in FIGS. 2 to 4, the flow of the heat medium 40 before charging, during charging, and when not charging is as follows.

  Before charging the battery, as shown in FIG. 2, the heat medium 40 is sucked from the opening 3 c of the pipe 3 located at the lower part of the heat medium reservoir 4 and taken into the pipe 3 by the operation of the pump 5. At this time, the air in the pipe located in front of the captured heat medium 40 is discharged from the atmosphere communication port 3a. The heat medium 40 fills the path to the opening 3b after filling the inside of the heat exchange core 6.

  When charging the battery, as shown in FIG. 3, the heat medium 40 is cooled by the second heat exchanging portion 21 of the pipe 3 to reach the first heat exchanging portion 2, where the battery B is cooled, It is discharged from the opening 3b to the heat medium storage unit 4. At this time, the heat medium 40 passes through the pipe 3 in the vicinity of the air communication port 3a, but the air communication port 3a is provided further above the uppermost portion of the pipe 3 through which the heat medium 40 passes. Yes. Although the liquid level of the heat medium 40 may rise from the pipe 3 toward the air communication port 3a due to flowing water resistance of the heat exchange core 6 or the like, the heat medium 40 is connected from the air communication port 3a because of a certain distance. It will not be discharged. In order to secure the certain distance, a rubber pipe or the like may be further connected to the atmosphere communication port 3a so that the tip of the rubber pipe is positioned higher.

  When the battery is not charged, as shown in FIG. 4, the heat medium 40 on the first heat exchanging unit 2 side passes through the opening 3 b of the pipe 3 and the pump 5 by stopping or reversing the pump 5. The side heat medium 40 is discharged from the opening 3 c of the pipe 3 to the heat medium reservoir 4. At this time, since the air communication port 3 a is provided in the pipe 3 above the first heat exchange unit 1, air flows into the first heat exchange unit, that is, the pipe 3, and the heat medium of the heat medium 40. The flow down to the storage part 4 is promoted.

  As described above, the battery temperature adjusting device shown in FIGS. 2 to 4 does not have the heat medium 40 in the first heat exchanging unit even in the case where the system is damaged due to a vehicle collision accident or the like. There is no possibility of the heat medium 40 leaking out, and an electric shock accident can be avoided. Further, even if the opening / closing valve is not provided in the opening 3b or the opening 3c, the heat medium can be filled, circulated, or discharged by simply controlling the pump 5 appropriately.

  The battery temperature adjusting device shown in FIGS. 7 to 9 has the same system configuration as the battery temperature adjusting device shown in FIGS. That is, the temperature control device of this example is provided with an air communication port above the first heat exchange unit 1, and the heat medium storage unit 4 is installed below the first heat exchange unit 2 so that the battery is not charged. In some cases, the heat medium 40 in the first heat exchange unit 2 is discharged from the first heat exchange unit 2 to the heat medium storage unit 4.

  In this example, the point that the atmosphere communication port 3a is provided at the uppermost part of the pipe 3 and the point that one opening 3b of the pipe 3 is located above the heat medium storage unit 4 are the same as the previous example, The other opening 3 c of the pipe 3 is different in that it is located at the upper part of the heat medium storage unit 4. Therefore, the operation and effect of the temperature adjusting device in this example are the same as those in the previous example, and the description thereof is omitted.

  In the case of the battery temperature adjusting device shown in FIGS. 7 to 9, since the other opening 3 c of the pipe 3 is also located above the heat medium storage unit 4, it is easier to remove the heat medium storage unit 4. Can be Therefore, the weight of the vehicle can be reduced by removing the heat medium storage unit 4 when the battery is not charged, that is, during traveling.

  The battery temperature adjusting device shown in FIGS. 10 to 12 has the same system configuration as the battery temperature adjusting device shown in FIGS. 2 to 4 and FIGS. 7 to 9. That is, the temperature control device of this example is provided with an air communication port above the first heat exchange unit 1, and the heat medium storage unit 4 is installed below the first heat exchange unit 2 so that the battery is not charged. In some cases, the heat medium 40 in the first heat exchange unit 2 is discharged from the first heat exchange unit 2 to the heat medium storage unit 4.

  In this example, the pipe 3 on the downstream side of the first heat exchange unit 2 of the first heat exchange unit 1 and the pipe 3 on the upstream side of the pump 5 are connected, and a three-way valve 7 is provided on the connected pipe, One side of the three-way valve 7 is provided with a pipe having an opening 3b, and a pipe having an opening 3c toward the heat medium storage unit 4 is provided on the downstream side of the three-way valve, and is further provided in the vicinity of the opening 3c. An on-off valve 8 is provided.

  In the battery temperature adjusting device shown in FIGS. 10 to 12, the flow of the heat medium 40 before charging, during charging, and during non-charging is as follows.

  Before the battery is charged, as shown in FIG. 10, only the opening 3 b side of the three-way valve 7 is opened and the on-off valve 8 is opened. By the operation of the pump 5, the heat medium 40 is sucked from the opening 3 c, Is taken in. At this time, the air in the pipe located in front of the captured heat medium 40 is discharged from the atmosphere communication port 3a. The heat medium 40 fills the inside of the heat exchange core 6 and then fills the inside of the path to the opening 3b.

  After the heat medium 40 is filled in the pipe 3, as shown in FIG. 11, when the path to the opening 3 b of the three-way valve 7 is closed and the on-off valve 8 is closed, the circulation cycle of the heat medium 40 is performed in the unit. Composed.

  As another embodiment in this configuration, it is also possible to open only the opening 3b of the three-way valve 7, open the on-off valve 8, and operate the pump 5. In this case, the heat medium 40 passes through the heat medium storage unit 4, the on-off valve 8, the pump 5, and the second heat exchange unit 21, reaches the first heat exchange unit 2, and performs heat exchange with the battery B. It is discharged to the heat medium storage unit 4 via 3b. At this time, the heat medium 40 passes through the pipe 3 in the vicinity of the air communication port 3a. However, since the air communication port 3a is provided at the top of the pipe 3, the heat medium 40 is discharged from the air communication port 3a. The absence of this is the same as in the previous examples.

  When the battery is not charged, as shown in FIG. 12, the path of the opening 3b of the three-way valve 7 and the on-off valve 8 are opened, and the pump 5 is stopped or reversed so that the first heat exchange unit 2 The heat medium 40 on the side is discharged from the opening 3 b of the pipe 3, and the heat medium 40 on the side of the pump 5 is discharged from the opening 3 c of the pipe 3 to the heat medium storage unit 4. At this time, since the air communication port 3 a is provided in the pipe 3 above the first heat exchange unit 1, air flows into the first heat exchange unit, that is, the pipe 3, and the heat medium of the heat medium 40. The flow down to the reservoir 4 is promoted as in the previous examples.

  In this way, the battery temperature adjusting device shown in FIGS. 10 to 12 is provided in the first heat exchange section even in the case where the system is damaged due to a vehicle collision accident or the like, as in the previous examples. Since there is no heat medium 40, there is no possibility of the heat medium 40 leaking out, and an electric shock accident can be avoided.

  In addition, since the three-way valve 7 and the on-off valve 8 are provided in the first heat exchange unit 2, the circulation cycle of the heat medium 40 can be configured in the unit by opening and closing these valves as appropriate.

  As described above, in the liquid usage system of this type of battery temperature adjusting device, the present invention is a battery temperature adjusting device for EV or HEV that can prevent an electric shock due to conduction between battery terminals in the event of a vehicle collision. Can be obtained.

  In addition to the above examples, the battery temperature adjusting device according to the present invention can be modified as appropriate in accordance with the object of the present invention. For example, the present invention can be used not only for cooling the battery but also for heating the battery.

  That is, there is a demand to improve the discharge capacity by raising the battery to an appropriate temperature when traveling immediately after charging in use in an extremely cold region. As described above, although heat is generated from the battery during charging, there is a case where it is desired to heat the battery in the extremely cold region because the heat generated from the battery is insufficient. In such a case, the request can be met by using hot water or the like for the heat medium 40 of this example. Furthermore, in the second heat exchange unit, the high-temperature and high-pressure refrigerant discharged from the compressor is caused to flow into the second heat exchange unit, the temperature of the first heat exchange unit is increased, and the condenser is used as an evaporator via the expansion valve. It can also be done.

  The present invention is suitable for a liquid use system of a battery temperature adjusting device for EV or HEV.

It is a whole block diagram which shows the temperature control apparatus of the battery which concerns on this invention. It is a block diagram which shows the 1st heat exchange unit in connection with the temperature control apparatus of the battery of this invention. It is a block diagram which shows the 1st heat exchange unit in connection with the temperature control apparatus of the battery of this invention. It is a block diagram which shows the 1st heat exchange unit in connection with the temperature control apparatus of the battery of this invention. It is a block diagram which shows the external appearance of a 1st heat exchange part regarding the temperature control apparatus of the battery of this invention. It is a block diagram which expands and shows a part of 1st heat exchange part regarding the temperature control apparatus of the battery of this invention. It is a block diagram which shows the 1st heat exchange unit in connection with the other example of the temperature control apparatus of the battery of this invention. It is a block diagram which shows the 1st heat exchange unit in connection with the other example of the temperature control apparatus of the battery of this invention. It is a block diagram which shows the 1st heat exchange unit in connection with the other example of the temperature control apparatus of the battery of this invention. It is a block diagram which shows the 1st heat exchange unit in connection with the other example of the temperature control apparatus of the battery of this invention. It is a block diagram which shows the 1st heat exchange unit in connection with the other example of the temperature control apparatus of the battery of this invention. It is a block diagram which shows the 1st heat exchange unit in connection with the other example of the temperature control apparatus of the battery of this invention.

DESCRIPTION OF SYMBOLS 1 1st heat exchange unit 2 1st heat exchange part 20 2nd heat exchange unit 21 2nd heat exchange part 22 Compressor 23 Condenser 24a Decompressor 24b Decompressor 25 Evaporator 26 Switching valve 3 Piping 3a Atmospheric communication port 3b Opening 3c Opening 4 Heat medium storage part 40 Heat medium 5 Pump 6 Heat exchange core 61 Aluminum plate 62 Header part 63 Flow path 64 Partition part 7 Three-way valve 8 On-off valve B Battery

Claims (5)

The first heat exchange unit including a first heat exchange unit that fills the pipe with a liquid heat medium and exchanges heat with the battery using the heat medium, and the heat medium exchanged with the first heat exchange unit are radiated or released. A temperature adjustment device for a battery having a second heat exchange unit including a second heat exchange unit for cooling,
The first heat exchange unit includes a heat medium reservoir, and a pump that circulates the heat medium in the heat medium reservoir in the pipe.
When charging the battery, the pump is operated to circulate the heat medium in the pipe,
The battery temperature adjusting device, wherein at least the heat medium in the first heat exchange unit is discharged to the outside of the first heat exchange unit when the battery is not charged.   The heat medium storage part is configured to be installed below the first heat exchange part, and when the battery is not charged, the heat medium in the first heat exchange part is removed from the first heat exchange part. The battery temperature adjusting device according to claim 1, wherein the battery temperature adjusting device is discharged to the heat medium storage unit.   An air communication port is provided above the first heat exchange unit, and the heat medium storage unit is installed below the first heat exchange unit. When the battery is not charged, the first heat exchange unit is provided. 2. The temperature adjusting device for a battery according to claim 1, wherein the heat medium in the exchange part is discharged from the first heat exchange part to the heat medium storage part.   The first heat exchange unit of the first heat exchange unit and the second heat exchange unit are connected by a pipe, a three-way valve is provided in the connected pipe, and one of the three-way valves is connected to the heat medium storage part. A pipe having a first opening is provided, and a pipe having a second opening to the heat medium storage portion is provided on either the upper or lower side of the three-way valve, and further opened and closed in the vicinity of the second opening. The temperature adjusting device for a battery according to any one of claims 1 to 3, wherein a valve is provided. The battery temperature adjusting device according to any one of claims 1 to 4, wherein the heat medium storage portion is detachably provided.

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