WO2013111529A1

WO2013111529A1 - Battery temperature adjustment device

Info

Publication number: WO2013111529A1
Application number: PCT/JP2013/000118
Authority: WO
Inventors: 英晃大川; 山中　隆; 木下　宏; 竹内　雅之
Original assignee: 株式会社デンソー
Priority date: 2012-01-24
Filing date: 2013-01-15
Publication date: 2013-08-01
Also published as: JP2013152821A

Abstract

A battery temperature adjustment device comprises a plurality of unit batteries (80), a fluid flow device (7), a warm-up heat source device (6) which radiates heat toward a temperature adjustment fluid when in warm-up mode, a cooling heat source device (6) which absorbs heat from the temperature adjustment fluid when in cooling mode, and a control device (50). The plurality of unit batteries further comprise electrode terminals (81) and are connected in a current-carrying-capable manner. When in warm-up mode, the control device makes the warm-up heat source device function and control the flow path of the temperature adjustment fluid, and when in cooling mode, the control device makes the cooling heat source device function and control the flow path of the temperature adjustment fluid. The control device controls the flow path of the temperature adjustment fluid such that, when in cooling mode, the temperature adjustment fluid is made to flow through the unit batteries from one side whereat the electrode terminals protrude, to circulate in the surroundings of the unit batteries, and thereafter exit from the other side thereof, and when in heating mode, the temperature adjustment fluid is made to circulate in the surroundings of the unit batteries in the opposite direction to the direction of the temperature adjustment fluid when in cooling mode.

Description

Battery temperature control device

Cross-reference of related applications

This disclosure is based on Japanese Patent Application No. 2012-12280 filed on January 24, 2012, the contents of which are incorporated herein.

The present disclosure relates to a battery temperature control device that adjusts the temperature of an assembled battery including a plurality of single cells by a fluid that circulates around the battery.

As a conventional battery temperature control device, for example, a device described in Patent Document 1 is known. The apparatus blows an atmosphere cooled or heated by introducing a refrigerant into a heat exchanger to a battery pack by a blower fan.

JP, 2009-259785, A However, in the above-mentioned prior art, the unit cells constituting the assembled battery are cooled or heated by the air flowing around, but even if cooled or heated, the temperature of the unit cell surface is not always the same. There is a problem that it does not become uniform. For example, in a unit cell, a part with a large calorific value is likely to be hotter than other parts, so that a temperature distribution that forms a high-temperature part and a low-temperature part occurs on the surface of the unit cell, or the direction of air flow to the unit cell In some cases, a temperature distribution may occur depending on the degree of cooling or heating on the surface of the unit cell.

The present disclosure aims to provide a battery temperature control device that suppresses a large temperature difference on the battery surface both when the battery is warmed up and when the battery is cooled.

In order to achieve the above object, the battery temperature control device according to the first aspect of the present disclosure includes a plurality of unit cells each having an electrode terminal projecting to the outside and connected to be energized, and a plurality of unit cells. Fluid flow device for flowing a temperature-controlled fluid for adjusting the temperature of the cell so as to flow around the unit cell, and a heat source device for warming up to dissipate the temperature-controlled fluid in the warm-up mode for warming up the plurality of unit cells And a cooling heat source device that absorbs heat from the temperature control fluid in the cooling mode for cooling a plurality of single cells, and a warm-up heat source device in the warm-up mode to function and control the flow path of the temperature-control fluid and cooling And a control device that controls the flow path of the temperature control fluid in the cooling mode, and the control device projects the temperature control fluid to a plurality of single cells in the cooling mode. Of a plurality of single cells After the enclosure is circulated, the temperature adjustment fluid is flowed out from the other side, and in the warm-up mode, the temperature adjustment fluid is circulated around the plurality of single cells in the direction opposite to that in the cooling mode. Control.

According to this, since the temperature control fluid flows from the periphery of the one side portion where the electrode terminal of the unit cell protrudes toward the periphery of the other side portion in the cooling mode, the temperature control fluid moves first to the electrode terminal side of the unit cell. Then, the other side far from the electrode terminal is cooled. In addition, since the temperature control fluid flows from the periphery of the other side portion of the unit cell toward the periphery of the one side portion in the warm-up mode, the temperature control fluid is heated after the other side far from the electrode terminal of the unit cell is heated first. One side close to the electrode terminal is heated. As a result, it is possible to form a temperature-controlled fluid flow that has a high effect of strongly cooling one side of the unit cell that tends to generate heat and become hotter than the other parts, and at the same time, it is easier to lower the temperature than the electrode terminal side. A temperature-controlled fluid flow having a high effect of strongly heating the other side of the battery can be formed. Therefore, the temperature difference between the one side and the other side of the unit cell can be reduced, and the occurrence of a significant temperature distribution on the unit cell surface can be avoided. From the above, it is possible to provide a battery temperature control device that suppresses the occurrence of a large temperature difference on the battery surface both when the battery is warmed up and when the battery is cooled.

In a second aspect of the present disclosure, the control device includes a single device having a function of a warm-up heat source device and a function of a cooling heat source device, and the control device controls the single device as a warm-up heat source in the warm-up mode. Switching control is performed so that it functions as a device and functions as a cooling heat source device in the cooling mode.

According to this, the effect of suppressing the temperature difference on the surface of the battery both when the battery is warmed up and when the battery is cooled can be realized by controlling the flow path of the temperature control fluid and switching the function of a single device. . Therefore, appropriate battery temperature control during warm-up and cooling can be provided by a heat source device with a small number of parts.

In the third aspect of the present disclosure, the temperature control fluid is a gas, the gas circulates in a circulation passage blocked from the outside, and the plurality of single cells are arranged in the circulation passage.

According to this, since the gas has a smaller heat capacity than the liquid, a remarkable temperature distribution on the surface of the unit cell is likely to occur. However, in the cooling mode, the one side portion where the electrode terminal of the unit cell protrudes is cooled first and heated. The remarkable effect of suppressing the temperature difference on the surface of the unit cell can be obtained by the configuration in which the other side portion of the unit cell is heated first in the machine mode.

In the fourth aspect of the present disclosure, the temperature adjustment fluid is air. According to this, when the temperature control fluid is outside air or indoor air, if moisture contained in the air, dust flowing along with the air, etc. adhere to the electrode terminal which is the conductive part, it may cause a short circuit or poor conduction. However, by circulating the air through the circulation passage that is cut off from the outside, it is possible to prevent an increase in moisture in the circulating air and contamination of dust with the air. Therefore, by using appropriately controlled circulating air as the temperature control fluid, it is possible to suppress the occurrence of electrical problems and continue to use a plurality of single cells properly.

The above and other objects, features and advantages of the present disclosure will become more apparent from the following detailed description with reference to the accompanying drawings. The drawing
It is a perspective view which shows the structure of the battery temperature control apparatus of 1st Embodiment. In the battery temperature control apparatus of 1st Embodiment, it is a schematic diagram for demonstrating the air flow at the time of battery warming-up, and the operation state of a heat pump cycle. In the battery temperature control apparatus of 1st Embodiment, it is a schematic diagram for demonstrating the air flow at the time of battery cooling, and the operation state of a heat pump cycle. It is a schematic diagram which shows the temperature control fluid flow direction with respect to the cell at the time of warming-up. It is a schematic diagram which shows the temperature control fluid flow direction with respect to the cell at the time of cooling. In the battery temperature control apparatus of 2nd Embodiment, it is a schematic diagram for demonstrating the air flow at the time of battery warming-up, and the operation state of a heat pump cycle. In the battery temperature control apparatus of 2nd Embodiment, it is a schematic diagram for demonstrating the operation state of the air flow at the time of battery cooling, and a heat pump cycle. In the battery temperature control apparatus of 3rd Embodiment, it is a schematic diagram for demonstrating the air flow at the time of battery warm-up, and the operation state of each apparatus. In the battery temperature control apparatus of 3rd Embodiment, it is a schematic diagram for demonstrating the air flow at the time of battery cooling, and the operation state of each apparatus. In the battery temperature control apparatus of 4th Embodiment, it is a schematic diagram for demonstrating the operation state of the fluid flow at the time of battery warming-up, and a heat pump cycle. In the battery temperature control apparatus of 4th Embodiment, it is a schematic diagram for demonstrating the fluid flow at the time of battery cooling, and the operation state of a heat pump cycle. In the battery temperature control apparatus of 5th Embodiment, it is a schematic diagram for demonstrating the fluid state at the time of battery warming-up, and the operation state of a heat pump cycle. In the battery temperature control apparatus of 5th Embodiment, it is a schematic diagram for demonstrating the fluid flow at the time of battery cooling, and the operation state of a heat pump cycle. In the battery temperature control apparatus of 6th Embodiment, it is a schematic diagram for demonstrating the fluid flow at the time of battery warming-up, and the operation state of each apparatus. In the battery temperature control apparatus of 5th Embodiment, it is a schematic diagram for demonstrating the fluid flow at the time of battery cooling, and the operation state of each apparatus. It is a schematic diagram for demonstrating the temperature distribution which may arise on the cell surface with respect to a temperature control fluid flow regarding a prior art example.

A plurality of embodiments will be described below with reference to the drawings. In each embodiment, parts corresponding to the matters described in the preceding embodiment may be denoted by the same reference numerals, and redundant description may be omitted. When only a part of the configuration is described in each mode, the other modes described above can be applied to the other parts of the configuration. Not only combinations of parts that clearly show that combinations are possible in each embodiment, but also combinations of the embodiments even if they are not specified, unless there is a particular problem with the combination. Is also possible.
(First embodiment)

The battery temperature control device is, for example, a hybrid vehicle using a traveling drive source by combining an internal combustion engine and a motor driven by electric power charged in the battery, an electric vehicle using the motor as a traveling drive source, household equipment, and factory equipment. Used for etc. The temperature-controlled battery is used not only for supplying power to the motor for running, but also for storing power collected by solar cell panels, commercial power supplies, etc., and using the power when necessary. It is done. The electric power is stored in each single battery constituting the assembled battery, and each single battery is, for example, a nickel metal hydride secondary battery, a lithium ion secondary battery, or an organic radical battery, for example, in a state of being housed in a casing. In addition to being placed under the seat of the automobile, in the space between the rear seat and the trunk room, in the space between the driver seat and the passenger seat, etc., it is placed in the vicinity of the energy management device, solar cell panel system, and the like.

The first embodiment will be described with reference to FIGS. 1 to 5 and FIG. FIG. 1 is a perspective view showing the configuration of the battery temperature control device 100 of the first embodiment. In FIG. 1, the flow of the temperature-controlled fluid during battery cooling is indicated by arrows, and the assembled battery 8, the blower 7, and the heat exchanger 6 housed in the housing 9 are easy to understand the configuration. This is indicated by a solid line, not a broken line. FIG. 2 shows the air flow during battery warm-up and the operating state of the heat pump cycle 1 in the battery temperature control apparatus 100. FIG. 3 shows the air flow during battery cooling and the operating state of the heat pump cycle 1 in the battery temperature control apparatus 100. In 1st Embodiment, air is employ | adopted as an example of the temperature control fluid used in order to adjust the temperature of a battery.

The battery temperature control device 100 includes an assembled battery 8 composed of a plurality of unit cells 80 connected to be energized, a blower 7 that blows air to the unit cells 80, and radiates heat to the air in the warm-up mode. A heat exchanger 6 that functions as a heat source device for warming up, absorbs heat from the air in the cooling mode and functions as a heat source device for cooling, a control device 50 that controls the function of the heat exchanger 6 and the drive of the blower 7; Is provided. The battery temperature control apparatus 100 arranges the assembled battery 8, the heat exchanger 6, and the blower 7 in a circulation passage 10 formed inside the housing 9, and constructs an air circulation route that circulates through the circulation passage 10. .

The air circulating in the circulation passage 10 is flowed by the blower 7, passes through the heat exchange part of the heat exchanger 6 and the periphery of the unit cell 80, and exchanges heat therewith. The circulation passage 10 is a passage cut off from the outside, and the air flowing by the blower 7 continues to circulate through the circulation passage 10 without touching the external atmosphere. The blower 7 is a wind direction variable blower that can blow air in two opposite directions. The control device 50 can control the blowing direction of the blower 7 by switching the rotation direction of the fan of the blower 7 between forward rotation and reverse rotation.

The assembled battery 8 in which a plurality of unit cells 80 are stacked is controlled by electronic components (not shown) used for charging, discharging, and temperature control of the plurality of unit cells 80, and each unit is controlled by air flowing around. The battery 80 is cooled. This electronic component is an electronic component that controls a relay, an inverter of a charger, a battery monitoring device, a battery protection circuit, various control devices, and the like.

The cell 80 has, for example, a flat rectangular parallelepiped outer case, and has an electrode terminal 81 that protrudes to the outside from a narrow upper end surface 82 that is parallel to the thickness direction. The electrode terminal 81 includes a positive electrode terminal and a negative electrode terminal that are arranged at predetermined intervals in each unit cell 80. All the unit cells 80 constituting the assembled battery 8 are stacked by a bus bar that starts from the negative terminal of the unit cell 80 located on one end side in the stacking direction and connects the electrode terminals of the adjacent unit cells 80. They are connected in series so that they can be energized up to the positive terminal of the unit cell 80 located on the other end side in the direction.

The unit cell 80 is provided with a plurality of ribs 84 on the surface facing the adjacent unit cell 80, extending in the projecting direction of the electrode terminal 81 and spaced in a direction perpendicular to the projecting direction. The rib 84 has a rail shape extending in the flow direction of the temperature control fluid, and extends over the entire side surface of the unit cell. Between the adjacent ribs 84, in the state of the assembled battery 8 in which a plurality of single cells 80 are stacked, an inter-battery passage 85 through which the temperature control fluid flows is configured.

The plurality of unit cells 80 constituting the assembled battery 8 are, for example, connected by rods (not shown) or the like by connecting restraint plates (not shown) installed at both ends in the stacking direction of the unit cells 80. It is constrained by receiving a compressive force due to an external force directed inward from the both end portions, and is configured integrally. When a restraining force in the stacking direction is applied to each unit cell 80 by the restraining device, each of the plurality of ribs 84 comes into contact with the side surface of the adjacent unit cell 80 and acts from the adjacent unit cell 80. Receive power. In addition, the plurality of ribs 84 have a strength to receive a force in the compression direction due to the restraining force when contacting the side surface of the adjacent unit cell 80. Further, the plurality of ribs 84 have a function of forming a plurality of elongated rectangular battery-like passages 85 formed between adjacent unit cells 80 and expanding the heat transfer area of the unit cells 80.

The rib 84 may be a protrusion formed integrally with the outer case of the unit cell 80, or may be formed on a separate plate member that is a separate component from the outer case of the unit cell 80. The separate plate member can be provided on the side surface of the unit cell 80 by integral molding such as insert molding. The outer case in which the ribs 84 are integrally formed is formed of, for example, an insulating resin, such as polypropylene, polyethylene, polystyrene, vinyl chloride, fluorine resin, PBT, polyamide, polyamideimide (PAI resin), ABS resin ( (Acryliconitrile, butadiene, styrene copolymer synthetic resin), polyacetal, polycarbonate, polybutylene terephthalate, polyethylene terephthalate, polyphenylene sulfide, phenol, epoxy, acrylic resin, and the like.

The heat exchanger 6 disposed in the circulation passage 10 in the housing 9 is a functional part of the heat pump cycle 1 used for air conditioning, for example. The heat pump cycle 1 is an apparatus in which an electric compressor 2, a heat exchanger 6, an expansion valve 5, a heat exchanger 4, and a four-way valve 3 are connected in a ring shape by piping, and a refrigerant is sealed inside. The heat pump cycle 1 is configured to allow the heat exchanger 6 to function as both a heat-dissipating heat exchanger and a heat-absorbing heat exchanger by switching the pipe connected by the four-way valve 3. The control device 50 controls operations such as the rotational speed of the electric compressor 2, the switching state of the four-way valve 3, and the rotational speed of the blower 7. The expansion valve 5 is a decompressor with a fixed opening, but an electronically controlled expansion valve with a variable opening may be used.

That is, the four-way valve 3 connects the discharge side pipe of the electric compressor 2 and the heat exchanger 6 side pipe, and connects the suction side pipe of the electric compressor 2 and the heat exchanger 4 side pipe. In such a case, the heat exchanger 6 functions as a heat dissipation heat exchanger, and the heat exchanger 4 functions as a heat absorption heat exchanger. On the other hand, the four-way valve 3 connects the piping on the discharge side of the electric compressor 2 and the piping on the heat exchanger 4 side, and connects the piping on the suction side of the electric compressor 2 and the piping on the heat exchanger 6 side. In this case, the heat exchanger 6 functions as an endothermic heat exchanger, and the heat exchanger 4 functions as a heat radiating heat exchanger. Thus, the heat exchanger 6 functions as a warming-up heat source device in the warming-up mode, and is switched and controlled so as to function as a cooling heat source device in the cooling mode. It is.

In the warm-up mode in which the temperature of the unit cell 80 requires warm-up, the control device 50 drives the electric compressor 2 and connects the four-way valve 3 to the piping between the discharge side of the electric compressor and the heat exchanger 6. Then, switching is performed so as to connect the pipe between the suction side of the electric compressor 2 and the heat exchanger 4. Further, the control device 50 sets the rotation direction of the fan of the blower 7 so that the air that has passed through the heat exchanger 6 has a lower end surface 83 (the other side) opposite to the upper end surface 82 (one side) from which the electrode terminal 81 protrudes. The air blowing direction of the blower 7 is controlled so as to flow into the inter-battery passage 85 from the side). Thus, the refrigerant discharged from the electric compressor 2 radiates heat to the air circulating in the circulation passage 10 by the heat exchanger 6, is decompressed by the expansion valve 5, is vaporized by the heat exchanger 4, and is electrically It is sucked into the compressor 2. That is, the heat exchanger 6 functions as a warm-up heat source device, and the heat exchanger 4 functions as an endothermic heat exchanger (evaporator). At this time, the air cooled by the heat exchanger 4 may be supplied to the passenger compartment as cooling air.

As shown in FIG. 4, the air circulating in the circulation passage 10 flows into the inter-cell passage 85 from the lower end surface 83 which is the other side of the unit cell 80 in a state where the temperature is increased by being heated by the heat exchanger 6. First, heat is applied to the surface of the unit cell on the other side far from the electrode terminal 81 to heat it. Furthermore, it rises in contact with the side surface of the unit cell 80 and continues to apply heat to the unit cell surface, and finally heat is applied to the unit cell surface at one side near the electrode terminal 81. At this time, the amount of heat given to the cell surface by the air decreases from the other side portion toward the one side portion. Therefore, in the warm-up mode, the portion closer to the other side portion has a higher thermal effect, and the portion closer to the one side portion has a lower thermal effect.

On the other hand, when the temperature of the unit cell 80 requires cooling, the control device 50 drives the electric compressor 2 and connects the four-way valve 3 to the piping between the discharge side of the electric compressor 2 and the heat exchanger 4. At the same time, switching is performed so that the piping between the suction side of the electric compressor 2 and the heat exchanger 6 is connected. Further, the control device 50 sets the rotation direction of the fan of the blower 7 so that the air that has passed through the heat exchanger 6 flows into the inter-battery passage 85 from the upper end surface 82 (one side) from which the electrode terminal 81 protrudes. The direction of the blower 7 is controlled. Thereby, the refrigerant discharged from the electric compressor 2 radiates heat by the heat exchanger 4, is decompressed by the expansion valve 5, is vaporized by the heat exchanger 6, and cools the air circulating through the circulation passage 10. The refrigerant evaporated in the heat exchanger 6 is sucked into the electric compressor 2. That is, the heat exchanger 6 functions as a cooling heat source device (evaporator), and the heat exchanger 4 functions as a heat dissipation heat exchanger. At this time, the air heated by the heat exchanger 4 may be supplied to the passenger compartment as heating air.

As shown in FIG. 5, the air circulating through the circulation passage 10 flows into the inter-cell passage 85 from the upper end surface 83 on one side of the unit cell 80 in a state where the temperature is lowered by being cooled by the heat exchanger 6, First, the surface of the unit cell on one side near the electrode terminal 81 is deprived of heat and cooled. Furthermore, it descends in contact with the side surface of the unit cell 80 and continues to take heat from the surface of the unit cell, and finally takes heat from the surface of the unit cell on the other side far from the electrode terminal 81. At this time, the amount of heat that the air absorbs from the surface of the unit cell decreases from the one side portion toward the other side portion. Therefore, in the cooling mode, the portion closer to the one side portion has a higher cooling effect, and the portion closer to the other side portion has a lower cooling effect.

FIG. 16 is a schematic diagram for explaining the temperature distribution that can occur on the surface of the unit cell with respect to the flow of the temperature control fluid in the conventional example which is a comparative example. When the temperature control fluid flows into the unit cell 80 in the direction (lateral direction) orthogonal to the protruding direction of the electrode terminal 81 as in the conventional example (see FIG. 16), in the warm-up mode and the cooling mode Sometimes, the temperature distribution on the cell surface has the following tendency. Usually, the surface temperature of the unit cell 80 is higher in one side portion (upper surface portion in FIG. 16) close to the electrode terminal 81 that easily generates heat, and the other side portion (lower surface in FIG. 16) than the one side portion. Part) becomes lower.

In the cooling mode, since the cooling effect is higher toward the upstream side of the temperature control fluid flow, the surface temperature of the unit cell 80 is lower in the portion corresponding to the upstream side of the temperature control fluid flow (the surface portion on the left side in FIG. 16). Conversely, the portion corresponding to the downstream side (the surface portion on the right side in FIG. 16) is higher than the upstream side portion. When these are combined, in the cooling mode, the surface temperature of the unit cell 80 is the lowest at the other side part far from the electrode terminal 81 and the upstream side part (area surrounded by the two-dot chain line indicated by C2 in the lower left of FIG. 16). The one side part near the electrode terminal 81 and the downstream side part (area surrounded by the two-dot chain line indicated by C1 in the upper right of FIG. 16) are the hottest.

On the other hand, in the warm-up mode, since the thermal effect is higher toward the upstream side of the temperature control fluid flow, the surface temperature of the unit cell 80 is a portion corresponding to the upstream side of the temperature control fluid flow (the surface portion on the left side in FIG. 16). Conversely, the portion corresponding to the downstream side (the surface portion on the right side of FIG. 16) is lower than the upstream portion. When these are combined, the surface temperature of the unit cell 80 in the warm-up mode is the highest in the one side portion close to the electrode terminal 81 and the upstream side portion (the region surrounded by the two-dot chain line indicated by H1 in the upper left of FIG. 16). The other side portion far from the electrode terminal 81 and the downstream side portion (region surrounded by a two-dot chain line indicated by H2 in the lower right of FIG. 16) has the lowest temperature.

As described above, in the prior art of FIG. 16 shown as a comparative example, a remarkable temperature distribution that causes a problem in the temperature of the unit cell surface occurs in both the cooling mode and the warm-up mode. This temperature distribution is a factor that hinders proper battery temperature management. Therefore, the battery temperature control apparatus 100 of the present embodiment has a feature that solves this problem.

According to the present embodiment, the battery temperature control device 100 includes a plurality of single cells 80, a blower 7 that causes the temperature control fluid to flow around the single cells 80, and air (temperature control fluid) in the warm-up mode. The heat exchanger 6 that dissipates heat and absorbs heat from the air (temperature-controlled fluid) in the cooling mode and the heat exchanger 6 in the warm-up mode function to control the air flow path and exchange heat in the cooling mode. And a control device 50 that controls the air flow path. In the cooling mode, the control device 50 allows air to flow into the unit cell 80 from one side where the electrode terminal 81 protrudes and circulates around the unit cell 80, and then flows out from the other side. The air flow path is controlled so that the air flows around the unit cell 80 in the opposite direction to that in the cooling mode.

According to this, in the cooling mode, air flows from the periphery of the one side portion where the electrode terminal 81 of the unit cell 80 protrudes toward the periphery of the other side portion. That is, at the time of cooling, a portion having a high heat generation density can be arranged on the upstream side of the air flow. For this reason, air cools the electrode terminal 81 side first, and then cools the other side far from the electrode terminal 81. In the warm-up mode, air flows from the periphery of the other side portion of the unit cell 80 toward the periphery of the one side portion. That is, at the time of warming up, a portion having a high heat generation density can be arranged on the downstream side of the air flow. For this reason, air heats the other side far from the electrode terminal 81 first, and then heats the one side close to the electrode terminal 81. As a result, it is possible to form a temperature-controlled fluid flow that is highly effective in strongly cooling one side of the unit cell 80 that tends to generate heat and become hotter than the other parts, and at a lower temperature than the electrode terminal 81 side. It is possible to form a temperature-controlled fluid flow that has a high effect of strongly heating the other side of the unit cell 80 that is easy. Therefore, the temperature difference between the one side and the other side of the unit cell 80 can be reduced, and the occurrence of a large temperature difference on the battery surface during both warm-up and cooling can be suppressed.

The battery temperature control device 100 is a single device that is controlled and switched by the control device 50 so as to function as a heat source device for warm-up in the warm-up mode and to function as a heat source device for cooling in the cooling mode. A heat exchanger 6 is provided. According to this, it is possible to obtain the above-described temperature difference suppression effect on the battery surface by performing the air conditioning fluid flow path control and the control for switching the function of the single device (heat exchanger 6). it can. Therefore, by adopting a heat source device with a small number of parts, it is possible to provide appropriate battery temperature control during warm-up and cooling.

Moreover, the battery temperature control apparatus 100 employs a gas (air, inert gas, etc.) as the temperature control fluid, and the gas flows through the circulation passage 10 that is blocked from the outside. Is arranged in the circulation passage 10. According to this, since the gas has a smaller heat capacity than the liquid, a remarkable temperature distribution on the surface of the unit cell is likely to occur. However, as described above, a configuration in which the one side portion where the electrode terminal 81 of the unit cell 80 protrudes in the cooling mode is cooled first and the other side portion of the unit cell 80 is first heated in the warm-up mode is adopted. Thus, a remarkable effect can be obtained with respect to temperature difference suppression on the surface of the unit cell.

Furthermore, the battery temperature control apparatus 100 employs air as the temperature control fluid. According to this, when the temperature control fluid is outside air or room air, moisture contained in the air, dust flowing along with the air, and the like are likely to adhere to the electrode terminal which is the conductive portion. In this case, although it may cause a short circuit or a failure in energization, the battery temperature control device 100 is less susceptible to external moisture or dust inflow by circulating air through the circulation passage 10 that is blocked from the outside. Therefore, it is possible to prevent the moisture in the air from increasing and dust from being mixed into the air. Therefore, since the appropriately controlled circulating air can be used as the temperature control fluid, it is possible to suppress the occurrence of an electrical failure in the assembled battery 8 and contribute to extending the battery life by proper continuous use.
(Second Embodiment)
In the second embodiment, a battery temperature adjustment device 100A that is another embodiment of the first embodiment will be described with reference to FIGS. 6 and 7. FIG. 6 shows the air flow during battery warm-up and the operating state of the heat pump cycle 1 in the battery temperature control apparatus 100A. FIG. 7 shows the air flow during battery cooling and the operating state of the heat pump cycle 1 in the battery temperature control apparatus 100A. In each figure, the component which attached | subjected the code | symbol same as FIG. 2 is the same element, The effect is also the same. Hereinafter, a different form, an effect | action, etc. from 1st Embodiment are demonstrated. The battery temperature control device 100A also has the effects described with reference to FIGS. 4 and 5 in the first embodiment.

The battery temperature control device 100A functions as a warm-up heat source device in the warm-up mode, the assembled battery 8, the blower 7A that blows air to the unit cell 80, the

doors

11 and 12 that switch the air flow path, and the warm-up mode. A heat exchanger 6 that functions as a cooling heat source device in the cooling mode, and a controller 50A that controls the function of the heat exchanger 6, the drive of the blower 7A, and the positions of the

doors

11 and 12 are provided. The battery temperature control device 100A is arranged by arranging the assembled battery 8, the heat exchanger 6, and the blower 7A in a circulation passage 10A formed inside the housing 9A, and controlling the positions of the

doors

11 and 12, thereby A flow path for air circulating through the closed circulation passage 10A is constructed.

In the door 11, the air that has passed through the heat exchanger 6 flows into the inter-cell passage 85 from the upper end surface 82 on one side of the unit cell 80, and the inter-battery passage 85 from the lower end surface 83 on the other side of the unit cell 80. The flow can be switched between In the warm-up mode, the door 11 is controlled to the position shown in FIG. 6, that is, the position where the non-terminal-side passage 10A2 adjacent to the lower end surface 83 opposite to the electrode terminal 81 is connected to the heat exchanger 6. The air that has passed through the exchanger 6 flows into the inter-cell passage 85 from the other side of the unit cell 80. Along with the position of this door 11, the door 12 is controlled to a position (position shown in FIG. 6) that connects the terminal side passage 10A1 adjacent to the electrode terminal 81 and the suction portion of the blower 7A.

On the other hand, in the cooling mode, the door 11 is controlled to the position shown in FIG. 7, that is, the position where the terminal side passage 10 A 1 and the heat exchanger 6 are connected. Flows into the inter-battery passage 85 from the side. With the position of the door 11, the door 12 is controlled to a position (position shown in FIG. 7) that connects the non-terminal side passage 10A2 and the suction portion of the blower 7A.

In the warm-up mode, the control device 50A drives the electric compressor 2, connects the four-way valve 3 to the discharge side of the electric compressor and the heat exchanger 6, and heats the suction side of the electric compressor 2 and heat. It switches so that piping with the exchanger 4 may be connected. Further, the control device 50A drives the fan of the blower 7A and sets the

doors

11 and 12 to the positions shown in FIG. 6 as described above. Thereby, the heat exchanger 6 functions as a heat source device for warm-up, and the heat exchanger 4 functions as a heat exchanger for heat absorption. The air blown by the blower 7A is heated when passing through the heat exchanger 6 and rises in temperature, passes through the non-terminal-side passage 10A2, and passes from the lower end surface 83 of the unit cell 80 (the other side of the unit cell 80) to the battery. The battery 80 flows into the inter-passage 85 to heat the cell 80 and flows out from the upper end surface 82 (one side of the cell 80). The air flowing out to the terminal side passage 10A1 further flows down and is sucked into the blower 7A, and continues to circulate through the circulation passage 10A to warm up the unit cell 80.

On the other hand, in the cooling mode, the control device 50A drives the electric compressor 2 to connect the four-way valve 3 to the discharge side of the electric compressor 2 and the pipe of the heat exchanger 4, and to the suction side of the electric compressor 2. And switching to connect the piping of the heat exchanger 6. Further, the control device 50A drives the fan of the blower 7A and sets the

doors

11 and 12 to the positions shown in FIG. 7 as described above. Thereby, the heat exchanger 6 functions as a cooling heat source device, and the heat exchanger 4 functions as a heat dissipation heat exchanger. The air blown by the blower 7A is cooled when passing through the heat exchanger 6 and drops in temperature, passes through the terminal-side passage 10A1, and passes from the upper end surface 82 of the unit cell 80 (one side of the unit cell 80) to between the cells. The battery 80 flows into the passage 85 to cool the unit cell 80 and flows out from the lower end surface 83 (the other side of the unit cell 80). The air flowing out to the non-terminal side passage 10A2 further flows down and is sucked into the blower 7A, and continues to circulate through the circulation passage 10A to cool the unit cell 80.
(Third embodiment)
In 3rd Embodiment, the battery temperature control apparatus 100B which is another form with respect to 1st Embodiment is demonstrated with reference to FIG.8 and FIG.9. FIG. 8 shows the air flow during battery warm-up and the operating state of each device in battery temperature control apparatus 100B. FIG. 9 shows the operating state of the air flow during battery cooling and the operating state of each device in the battery temperature control device 100B. In each figure, the component which attached | subjected the code | symbol same as FIG. 2 is the same element, The effect is also the same. Hereinafter, a different form, an effect | action, etc. from 1st Embodiment are demonstrated. The battery temperature control device 100B also has the effects described with reference to FIGS. 4 and 5 in the first embodiment.

The battery temperature control device 100B includes an assembled battery 8, a blower 7 that blows air to the unit cell 80, an electric heater 13 that functions as a warm-up heat source device in the warm-up mode, and an evaporator of the refrigeration cycle 1B. And a heat exchanger 6B that functions as a cooling heat source device in the cooling mode, and a control device 50B that controls the operation of the electric heater 13, the electric compressor 2, and the blower 7. The battery temperature control apparatus 100B arranges the assembled battery 8, the heat exchanger 6B, the electric heater 13, and the blower 7 in the circulation passage 10B formed inside the housing 9B, and connects the electric heater 13 and the electric compressor 2 to each other. By controlling, both warm-up mode and cooling mode can be implemented.

In the warm-up mode, the control device 50B operates the electric heater 13 to generate heat, sets the rotation direction of the fan of the blower 7, and the air that has passed through the electric heater 13 has the lower end surface 83 (the other side) of the unit cell 80. The air blowing direction of the blower 7 is controlled so as to flow into the inter-battery passage 85 from the side). Thereby, the electric heater 13 functions as a warm-up heat source device. The air blown by the blower 7 is heated and increases in temperature when passing through the electric heater 13, and flows into the inter-cell passage 85 from the lower end surface 83 of the unit cell 80 (the other side of the unit cell 80). 80 is heated and flows out from the upper end surface 82 (one side of the unit cell 80). The air flowing out of the inter-battery passage 85 further flows down and is sucked into the blower 7, and continues to circulate through the circulation passage 10B to warm up the unit cell 80.

On the other hand, in the cooling mode, the control device 50B drives the electric compressor 2, sets the rotation direction of the fan of the blower 7, and the air that has passed through the heat exchanger 6B passes through the upper end surface 82 (one side) of the unit cell 80. The air blowing direction of the blower 7 is controlled so as to flow into the inter-battery passage 85 from the side). The heat exchanger 6B functions as a heat source device for cooling when the refrigerant evaporates inside. The air blown by the blower 7 is cooled when passing through the heat exchanger 6 B, and its temperature is lowered. The air flows from the upper end surface 82 of the unit cell 80 (one side of the unit cell 80) into the inter-cell passage 85. The battery 80 is cooled and flows out from the lower end surface 83 (the other side of the unit cell 80). The air that has flowed out of the inter-battery passage 85 further flows down and is sucked into the blower 7, and continues to circulate through the circulation passage 10B to cool the unit cell 80.
(Fourth embodiment)
In the fourth embodiment, a battery temperature adjustment device 100C that is another embodiment of the first embodiment will be described with reference to FIGS. 10 and 11. FIG. 10 shows the temperature control fluid flow during battery warm-up and the operating state of the heat pump cycle 1C in the battery temperature control apparatus 100C. FIG. 11 shows the temperature control fluid flow during battery cooling and the operation state of the heat pump cycle 1C in the battery temperature control apparatus 100C. The heat pump cycle 1C functions in the same manner as the heat pump cycle 1 described in the first embodiment. In each figure, the component which attached | subjected the code | symbol same as FIG. 2 is the same element, The effect is also the same. Hereinafter, a different form, an effect | action, etc. from 1st Embodiment are demonstrated. The battery temperature control device 100C also has the effects described with reference to FIGS. 4 and 5 in the first embodiment.

The battery temperature control device 100C includes a battery pack 8, a circulation circuit 10C in which a temperature adjustment fluid that exchanges heat with the unit cells 80, a pump 7C that circulates the temperature adjustment fluid in the circulation circuit 10C, and a distribution path of the temperature adjustment fluid. Switching

valves

14 and 15 for switching, a heat exchanger 6C that functions as a heat source device for warm-up in the warm-up mode and functions as a heat source device for cooling in the cooling mode, functions of the heat exchanger 6C, driving of the pump 7C, switching valve And a control device 50C for controlling the switching operation between the fourteen and fifteen. The heat exchanger 6C is a device that includes a refrigerant passage that is a part of the heat pump cycle 1C and a temperature adjusting fluid passage that is a part of the circulation circuit 10C, and heat exchange between the refrigerants flowing through these passages. The battery temperature control device 100C includes a battery passage 85, a heat exchanger 6C, and a pump 7C in the circulation circuit 10C, and controls the switching operation of the switching

valves

14 and 15 to thereby circulate the circulation circuit 10C. Establish a distribution channel for conditioning fluid. In this embodiment, water and LLC are used as the temperature control fluid.

The switching valve 14 is configured such that the water that has passed through the heat exchanger 6C flows into the inter-cell passage 85 from the upper end surface 82 on one side of the unit cell 80, and the inter-battery passage from the lower end surface 83 on the other side of the unit cell 80. The flow can be switched between the flow flowing into 85. In the warm-up mode, the switching valve 14 is controlled so as to connect the non-terminal side passage 10C2 connected to the position shown in FIG. 10, that is, the lower end face 83 side opposite to the electrode terminal 81, to the heat exchanger 6C. Then, the water that has passed through the heat exchanger 6C flows into the inter-cell passage 85 from the other side of the unit cell 80. With the switching operation of the switching valve 14, the switching valve 15 is controlled so as to connect the terminal side passage 10C1 connected to the upper end face 82 side and the suction portion of the pump 7C (see FIG. 10).

On the other hand, in the cooling mode, the switching valve 14 is controlled to connect the position shown in FIG. 11, that is, the terminal side passage 10 C 1 and the heat exchanger 6 C, and the water that has passed through the heat exchanger 6 C It flows into the inter-battery passage 85 from one side. With the switching operation of the switching valve 14, the switching valve 15 is controlled so as to connect the non-terminal side passage 10C2 and the suction portion of the pump 7C (see FIG. 11).

In the warm-up mode, the control device 50C drives the electric compressor 2, connects the four-way valve 3 to the discharge side of the electric compressor and the heat exchanger 6C, and heats the suction side of the electric compressor 2 and heat. It switches so that piping with the exchanger 4 may be connected. Further, the control device 50C drives the pump 7C and controls the switching

valves

14 and 15 as shown in FIG. 10 as described above. Thus, the heat exchanger 6C functions as a warm-up heat source device, and the heat exchanger 4 functions as a heat absorption heat exchanger. The water circulated by the pump 7C is heated by the heat of the refrigerant when passing through the heat exchanger 6C, rises in temperature, passes through the non-terminal side passage 10C2, passes through the lower end surface 83 of the unit cell 80 (the other side of the unit cell 80). From the side) to the inter-battery passage 85 to heat the unit cell 80 and out of the upper end surface 82 (one side of the unit cell 80). The water flowing out to the terminal side passage 10C1 further flows down and is sucked into the pump 7C, and continues to circulate through the circulation circuit 10C to warm up the unit cell 80.

On the other hand, in the cooling mode, the control device 50C drives the electric compressor 2, connects the four-way valve 3 to the discharge side of the electric compressor 2 and the heat exchanger 4, and the suction side of the electric compressor 2. And switching to connect the piping of the heat exchanger 6C. Further, the control device 50C drives the pump 7C and controls the switching

valves

14 and 15 as shown in FIG. 10 as described above. Accordingly, the heat exchanger 6C functions as a cooling heat source device, and the heat exchanger 4 functions as a heat dissipation heat exchanger. When the water circulated by the pump 7C passes through the heat exchanger 6C, it is absorbed by the refrigerant to lower the temperature, passes through the terminal-side passage 10C1, and passes from the upper end surface 82 (one side of the unit cell 80) of the unit cell 80. The battery 80 flows into the inter-battery passage 85, cools the battery 80, and flows out from the lower end surface 83 (the other side of the battery 80). The water flowing out to the non-terminal side passage 10C2 further flows down and is sucked into the pump 7C, and continues to circulate through the circulation circuit 10C to cool the unit cell 80.
(Fifth embodiment)
In the fifth embodiment, a battery temperature control device 100D that is another embodiment of the first embodiment will be described with reference to FIGS. 12 and 13. FIG. 12 shows the temperature control fluid flow during battery warm-up and the operating state of the heat pump cycle 1C in the battery temperature control apparatus 100D. FIG. 13 shows the temperature control fluid flow during battery cooling and the operating state of the heat pump cycle 1C in the battery temperature control apparatus 100D. The heat pump cycle 1C is the same as that described in the fourth embodiment. In each figure, the component which attached | subjected the code | symbol same as FIG.2 and FIG.10 is the same element, The effect is also the same. Hereinafter, a different form, an effect | action, etc. from 1st Embodiment are demonstrated. The battery temperature control device 100D also has the effects described with reference to FIGS. 4 and 5 in the first embodiment.

The battery temperature control device 100D functions as a heat source device for warm-up in the warm-up mode and for cooling in the cooling mode. A heat exchanger 6C that functions as a heat source device, a function of the heat exchanger 6C, and a control device 50D that controls driving of the pump 7D are provided. Battery temperature control apparatus 100D arranges passage 85 between batteries, heat exchanger 6C, and pump 7D in circulation circuit 10D. Further, the pump 7D is a flow direction variable device capable of flowing a temperature control fluid in two opposite directions. For example, the control device 50D can control the direction of fluid flow by the pump 7D by switching the rotation direction of the pump 7D between forward rotation and reverse rotation. In this embodiment, water and LLC are used as the temperature control fluid.

In the warm-up mode, the control device 50D drives the electric compressor 2, connects the four-way valve 3 to the discharge side of the electric compressor and the heat exchanger 6C, and heats the suction side of the electric compressor 2 and the heat. It switches so that piping with the exchanger 4 may be connected. Further, the control device 50D sets the rotation direction of the pump 7D, and the pump 7D causes the water that has passed through the heat exchanger 6C to flow into the inter-cell passage 85 from the lower end surface 83 (the other side) of the unit cell 80. Control the direction of fluid flow. Thus, the heat exchanger 6C functions as a warm-up heat source device, and the heat exchanger 4 functions as a heat absorption heat exchanger. The water circulated by the pump 7D is heated by the heat of the refrigerant when passing through the heat exchanger 6C and rises in temperature, flows into the inter-cell passage 85 from the other side of the unit cell 80, and warms the unit cell 80. And flows out from one side of the unit cell 80. The water flowing out of the inter-battery passage 85 further flows down and is sucked into the pump 7D, and continues to circulate through the circulation circuit 10D to warm up the unit cell 80.

On the other hand, in the cooling mode, the control device 50D drives the electric compressor 2, connects the four-way valve 3 to the discharge side of the electric compressor 2 and the pipe of the heat exchanger 4, and the suction side of the electric compressor 2 And switching to connect the piping of the heat exchanger 6C. Further, the control device 50D sets the rotation direction of the pump 7D, and the pump 7D causes the water that has passed through the heat exchanger 6C to flow into the inter-cell passage 85 from the upper end surface 82 (one side) of the unit cell 80. Control the direction of fluid flow. Accordingly, the heat exchanger 6C functions as a cooling heat source device, and the heat exchanger 4 functions as a heat dissipation heat exchanger. When the water circulated by the pump 7D passes through the heat exchanger 6C, the water is absorbed by the refrigerant to lower the temperature, and flows into the inter-cell passage 85 from one side of the unit cell 80 to cool the unit cell 80. The battery 80 flows out from the other side. The water flowing out of the inter-battery passage 85 further flows down and is sucked into the pump 7D, and continues to circulate through the circulation circuit 10D to cool the unit cell 80.
(Sixth embodiment)
In the sixth embodiment, a battery temperature control apparatus 100E that is another form of the first embodiment will be described with reference to FIGS. 14 and 15. FIG. 14 shows the temperature control fluid flow and the operating state of each device during battery warm-up in the battery temperature control apparatus 100E. FIG. 15 shows the temperature control fluid flow and the operating state of each device during battery cooling in the battery temperature control apparatus 100D. In each figure, the component which attached | subjected the code | symbol same as FIG.2 and FIG.12 is the same element, The effect is also the same. Hereinafter, a different form, an effect | action, etc. from 1st Embodiment are demonstrated. The battery temperature control device 100E also has the effects described with reference to FIGS. 4 and 5 in the first embodiment.

The battery temperature adjustment device 100E includes an assembled battery 8, a circulation circuit 10E through which a temperature adjustment fluid that exchanges heat with the unit cell 80, a pump 7D, an electric heater 16 that functions as a heat source device for warm-up in the warm-up mode, A heat exchanger 6E that functions as a cooling heat source device in the cooling mode, and a control device 50E that controls the operation of the electric heater 16, the electric compressor 2, and the pump 7D are provided. The heat exchanger 6E is a device that includes a refrigerant passage that is a part of the refrigeration cycle 1E and a temperature adjustment fluid passage that is a part of the circulation circuit 10E, and heat exchange is performed between the refrigerants flowing through these passages. The battery temperature control device 100E includes a battery passage 85, a heat exchanger 6E, an electric heater 16, and a pump 7D in the circulation circuit 10E, and controls the electric heater 16 and the electric compressor 2 so that a warm-up mode is achieved. And cooling mode can be implemented. In this embodiment, water and LLC are used as the temperature control fluid.

In the warm-up mode, the control device 50D operates the electric heater 16 to generate heat, sets the rotation direction of the pump 7D, and water passing through the electric heater 16 has a lower end surface 83 (the other side) of the unit cell 80. The fluid flow direction by the pump 7D is controlled so as to flow into the inter-battery passage 85 from the pump 7D. Thereby, the electric heater 16 functions as a warm-up heat source device. The water circulated by the pump 7D is heated and increases in temperature when passing through the electric heater 16, and flows into the inter-cell passage 85 from the lower end surface 83 of the unit cell 80 (the other side of the unit cell 80). 80 is heated and flows out from the upper end surface 82 (one side of the unit cell 80). The water flowing out of the inter-battery passage 85 further flows down and is sucked into the pump 7D, and continues to circulate through the circulation circuit 10E to warm up the unit cell 80.

On the other hand, in the cooling mode, the control device 50E drives the electric compressor 2, sets the rotation direction of the pump 7D, and the water that has passed through the heat exchanger 6E passes through the upper end surface 82 (one side) of the unit cell 80. The fluid flow direction by the pump 7D is controlled so as to flow into the inter-battery passage 85 from the pump 7D. Thereby, the heat exchanger 6E functions as a cooling heat source device by the vaporization of the refrigerant inside. When the water circulated by the pump 7D passes through the heat exchanger 6E, it absorbs heat from the refrigerant and drops in temperature, and flows into the inter-cell passage 85 from one side of the unit cell 80 to cool the unit cell 80. The battery 80 flows out from the other side. The water flowing out of the inter-battery passage 85 further flows down and is sucked into the pump 7D, and continues to circulate through the circulation circuit 10E to cool the unit cell 80.

A modification of the above embodiment will be described. The present disclosure is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present disclosure. The structure of the said embodiment is an illustration to the last, Comprising: The range of this indication is not limited to the range of these description.

In the above embodiment, the unit cell 80 constituting the assembled battery 8 has a flat rectangular parallelepiped outer case, but the unit cell to which the present disclosure can be applied is not limited to such a shape. For example, the unit cell may have a cylindrical outer case.

In the above embodiment, the electrode terminal 81 of the unit cell 80 is configured to protrude upward on the upper end surface 82, but the protruding direction of the electrode terminal 81 to which the present disclosure can be applied is limited to protrude upward. Not. For example, the assembled battery 8 may be installed in a state where the protruding direction of the electrode terminal 81 is any one of the downward direction, the horizontal direction, the diagonally upward direction, and the diagonally downward direction.

In the above embodiment, the heat exchanger 6 that can function as a heat source device for warm-up and a heat exchanger for heat absorption is adopted, but heat generation and heat absorption are controlled using a Peltier element instead of the heat exchanger 6. By doing so, it can also be configured to function as a warm-up heat source device and a cooling heat source device.

Although the present disclosure has been described based on an embodiment, it is understood that the present disclosure is not limited to the embodiment or the structure. The present disclosure includes various modifications and modifications within the equivalent range. In addition, various combinations and forms, as well as other combinations and forms including only one element, more or less, are within the scope and spirit of the present disclosure.

Claims

A plurality of unit cells (80) each having an electrode terminal (81) projecting to the outside and connected to be energized;
A fluid flow device (7, 7A, 7C, 7D) for causing a temperature control fluid for adjusting the temperature of the plurality of unit cells (80) to flow around the plurality of unit cells (80);
A warm-up heat source device (6, 13, 6C, 16) for radiating heat to the temperature-controlled fluid during a warm-up mode for warming up the plurality of single cells (80);
A cooling heat source device (6, 6B, 6C, 6E) that absorbs heat from the temperature-controlled fluid in the cooling mode for cooling the plurality of single cells (80);
The warm-up heat source device (6, 13, 6C, 16) is caused to function during the warm-up mode, the flow path of the temperature control fluid is controlled, and the cooling heat source device (6, 6B, 6C, 6E), and a control device (50, 50A, 50B, 50C, 50D, 50E) for controlling the flow path of the temperature control fluid,
In the control device (50, 50A, 50B, 50C, 50D, 50E), in the cooling mode, the electrode terminal (81) protrudes from the temperature control fluid with respect to the plurality of single cells (80). After flowing from the side and circulating around the plurality of single cells (80), it flows out from the other side, and in the warm-up mode, the temperature control fluid is in the opposite direction to that in the cooling mode. A battery temperature control device for controlling a flow path of the temperature control fluid so as to flow around a plurality of single cells (80).
A single device (6, 6C) having the function of the warm-up heat source device (6, 13, 6C, 16) and the function of the cooling heat source device (6, 6B, 6C, 6E);
The control device (50, 50C, 50D) causes the single device (6, 6C) to function as the warm-up heat source device (6, 13, 6C, 16) in the warm-up mode, and The battery temperature control device according to claim 1, wherein switching control is performed so that the cooling heat source device (6, 6B, 6C, 6E) functions in a mode.
The temperature control fluid is a gas,
The gas flows through the circulation passage (10, 10A, 10B) blocked from the outside,
The battery temperature control device according to claim 1 or 2, wherein the plurality of single cells (80) are arranged in the circulation passage (10, 10A, 10B).
The battery temperature adjusting device according to claim 3, wherein the temperature adjusting fluid is air.