JP2019160497A - Cooling system - Google Patents

Abstract

To provide a cooling system capable of inhibiting a coolant from being adhered to a battery cell.SOLUTION: A cooling system 1 is a system for cooling a battery cell 51 loaded on a vehicle. The cooling system 1 includes: a housing body 30 which has an outflow port 33 through which air flows out from the inside and in which a cool-storing material 100 for cooling air is housed; and a connecting duct 40 which is connected to the outflow port 33 and forms a passage of air flowing out from the outflow port 33. The cooling system 1 includes a battery case 52 having an introduction port 52a for introducing air into the interior, provided separated from the housing body 30 via the connecting duct 40, and housing the battery cell 51 in the inside thereof.SELECTED DRAWING: Figure 3

Description

  The disclosure in this specification relates to a cooling system for cooling a battery mounted on a vehicle.

  Patent Document 1 discloses a battery cell, a regenerator material that can be in close contact with at least one surface of the battery cell, and an upper and lower portion that separates the regenerator material from the battery cell when the battery cell is not cooled and closely contacts the regenerator material when the battery cell is cooled. A battery system including a movable table driving device is disclosed. In this battery system, when the battery cell is cooled, the cool storage material is in close contact with the battery cell via the battery box base and the insulating material, thereby cooling the battery cell.

JP 2012-248363 A

  In the technique of Patent Document 1, the cool storage material is in close contact with the battery cell via the battery box base and the insulating material. Although the regenerator material is usually stored in a container, if the battery box base, the insulating material, and the container are damaged at the time of a vehicle collision, the regenerator material may leak out and adhere to the battery cell, causing a short circuit in the battery cell. .

  The disclosed object is to provide a cooling system capable of suppressing the adhesion of the coolant to the battery cell.

  A plurality of aspects disclosed in this specification adopt different technical means to achieve each purpose. In addition, the reference numerals in the parentheses described in the claims and in this section are examples showing the correspondence with the specific means described in the embodiments described later as one aspect, and limit the technical scope. is not.

  One of the disclosed cooling systems is a cooling system for cooling a battery cell (51) mounted on a vehicle, and has an outlet (33) through which air flows out from the inside, and a coolant ( 100) is accommodated, a connecting member (40, 240, 340, 440) that is connected to the outflow port and forms a passage through which the air flowing out from the outflow port flows, and introduces air into the inside A battery case (52) that has an inlet (52a) that is provided and is spaced apart from the container via a connecting member and that accommodates battery cells.

  According to this disclosure, the coolant cools the air in the container separated from the battery case via the connecting member. The cooled air passes from the container through the connecting member and flows into the battery case, thereby contributing to cooling of the battery cells. Since the container is provided at a position separated from the battery case via the connecting member, the coolant can be prevented from entering the battery case even when the coolant leaks due to a vehicle collision. Thereby, the cooling system which can suppress that a coolant adheres to a battery cell can be provided.

It is a figure showing the state where the cooling system concerning a 1st embodiment is attached to vehicles. It is the figure which looked at the vehicle of FIG. 1 from upper direction. It is a figure which shows the vehicle air conditioner of 1st Embodiment, a container, and a battery part. It is the figure which looked at the container and battery part of FIG. 3 from upper direction. It is the figure which looked at the container from the front. It is a flowchart which shows the process which the cooling system of 1st Embodiment performs. It is a figure which shows the container of 2nd Embodiment, a connection duct, and a battery part. It is a figure which shows the container of 3rd Embodiment, a connection duct, and a battery part. It is a flowchart which shows the process which the cooling system of 3rd Embodiment performs. It is a figure which shows the container, connection duct, and battery part of 4th Embodiment. It is a flowchart which shows the process which the cooling system of 4th Embodiment performs.

(First embodiment)
The cooling system 1 of 1st Embodiment is demonstrated referring FIGS. 1-6. The cooling system 1 is a system that cools the battery cells 51 of the battery unit 50 mounted on the vehicle. The cooling system 1 of 1st Embodiment contains the vehicle air conditioner 10, the air-conditioning connection duct 20, the accommodating body 30, the connection duct 40, and the battery part 50, as shown in FIGS. 1-3. Composed. The cooling system 1 cools the regenerator material 100 with cold air generated by the vehicle air conditioner 10 and cools the battery cells 51 with air cooled by the regenerator material 100.

  The vehicle air conditioner 10 includes a blower, a cooling heat exchanger 12 and a heating heat exchanger 15, and an air conditioning case 11 that houses these heat exchangers 12 and 15. The air conditioning case 11 is provided between, for example, a dash panel and an instrument panel. The air conditioning case 11 is formed with a plurality of openings 17 and 18 through which air blown from the blower unit is blown out.

  The air blower is provided on the upstream side of the air conditioning case 11. The air blower includes a fan disposed in the air conditioning case 11 and a motor that rotationally drives the fan. The fan is provided by a centrifugal fan such as a sirocco fan or a turbo fan. The air blowing unit is installed on the upstream side of the air conditioning case 11. The air blowing unit sucks air from the outside air intake port for taking in the outside air or the inside air intake port for taking in the inside air, and distributes the air into the air conditioning case 11.

  The cooling heat exchanger 12 and the heating heat exchanger 15 are accommodated in the air conditioning case 11. The cooling heat exchanger 12 provides heat exchange between the refrigerant and the air flowing through the air conditioning case 11. The cooling heat exchanger 12 is provided by, for example, an evaporator in a refrigeration cycle. That is, in the cooling heat exchanger 12, the refrigerant that has been compressed by the compressor, radiated by the condenser, and further decompressed by the decompression device flows. The cooling heat exchanger 12 absorbs latent heat of evaporation from the air by evaporating the refrigerant inside. Thereby, the cooling heat exchanger 12 cools the air. The cooling heat exchanger 12 is disposed upstream of the heating heat exchanger 15 inside the air conditioning case 11. The cooling heat exchanger 12 is provided so as to cross the entire passage in the air conditioning case 11. In other words, the cooling heat exchanger 12 is provided so as to be able to exchange heat with substantially all the air flowing through the air conditioning case 11.

  The heating heat exchanger 15 is a heat exchanger that provides heat exchange between a heating heat medium that circulates inside and air that circulates in the air conditioning case. The heat exchanger 15 for heating is provided by, for example, a heater core through which engine coolant flows as a heat medium or a condenser of a heat pump cycle. The heating heat exchanger 15 is provided downstream of the cooling heat exchanger 12 in the air flow so as to cross a part of the air passage in the air conditioning case 11. The heating heat exchanger 15 is provided, for example, near the center of the air conditioning case 11 in the vertical direction. The air volume ratio between the air passing through the heating heat exchanger 15 and the air bypassing the heating heat exchanger 15 is adjusted by the air mix door.

  The air conditioning case 11 includes a lower cold air passage 13 through which the air that has passed through the cooling heat exchanger 12 circulates below the heating heat exchanger 15 and the air that has passed through the cooling heat exchanger 12 is heat for heating. An upper cold air passage 14 that circulates around the upper side of the exchanger 15 is provided. The air conditioning case 11 is formed with a plurality of blowout openings 17 and cold storage openings 18 as openings through which the air flowing through the inside flows out. The plurality of blowing openings 17 are openings through which air in the air conditioning case 11 is blown out to the vehicle interior. The air volume ratio of the air blown out from each blowing opening 17 is adjusted by a plurality of blowing doors that change the opening area of the corresponding blowing opening 17.

  The plurality of blowout openings 17 include, for example, a defroster opening, a face opening, and a foot opening. The defroster opening is formed in the upper part of the air conditioning case 11 and allows air blown out to the windshield. The face opening is formed in the upper part of the air conditioning case 11 on the rear side of the defroster opening, and the air blown toward the upper body of the passenger passes therethrough. The foot opening is formed in the lower part of the air-conditioning case 11, and air blown out toward the feet of the occupant passes therethrough.

  The air conditioning case 11 has a cold storage opening 18 in addition to the plurality of blowing openings 17 described above. The cold storage opening 18 is provided on the lower side of the heating heat exchanger 15 and the foot opening in the vertical direction, for example. The cold storage opening 18 is provided on the downstream side of the lower cold air passage 13. The cold storage opening 18 is an opening through which the cold air flowing through the lower cold air passage 13 flows out.

  The cold storage opening / closing door 19 is a door that switches between the open state and the closed state of the cold storage opening 18. The cool storage open / close door 19 is in an open state, communicates the lower cool air passage 13 and the cool storage opening 18, and blocks the warm air passage 16 and the cool storage opening 18. The cool storage opening / closing door 19 closes the cool storage opening 18 in the closed state, and connects the lower cool air passage 13 and the warm air passage 16 to each other. The opening / closing door 19 for cold storage may be capable of continuously adjusting the opening degree. The cold storage opening / closing door 19 is an example of an air-conditioning air switching unit. The operation of the cold storage opening / closing door 19 is controlled by the control device 90.

  The control device 90 includes a microcomputer including a computer-readable storage medium as a main hardware element. The storage medium is a non-transitional physical storage medium that stores a predetermined program readable by a computer in a non-temporary manner. The storage medium can be provided by a semiconductor memory or a magnetic disk. The control device 90 has a function of executing various control processes by executing various programs stored in the storage medium by a processor such as a CPU. The means and / or function provided by the control device 90 can be provided by software recorded in a storage medium and a computer that executes the software, software only, hardware only, or a combination thereof. For example, if the controller 90 is provided by electronic circuitry that is hardware, it can be provided by a digital circuit including a number of logic circuits, or an analog circuit.

  The control device 90 is, for example, an air conditioning ECU (Electronic Control Unit) that controls the operation of the vehicle air conditioner 10. The control device 90 is one of a plurality of ECUs mounted on the vehicle. Or the control apparatus 90 may be comprised by several ECU. The control device 90 is an example of an air conditioning control unit. The control device 90 controls the operation of the vehicle air conditioner 10 based on input information of operation switches provided on an instrument panel or the like and detection information from various sensors provided on the vehicle.

  An air conditioning connection duct 20 that forms an air circulation passage is attached to the cold storage opening 18. The air conditioning connection duct 20 is formed of a resin material or the like having a certain degree of elasticity and excellent strength in the same manner as the air conditioning case 11. The air conditioning connection duct 20 communicates the cold storage opening 18 and the air intake 31 of the container 30. In other words, one end of the air conditioning connection duct 20 is connected to the air conditioning case 11, and the other end is connected to the container 30. The air conditioning connection duct 20 includes a downward extending portion 20a extending downward from the cold storage opening 18, and a horizontal extending portion 20b extending horizontally from the downward extending portion 20a toward the rear of the vehicle. It can also be said that the downward extending portion 20a is a portion extending from above to below along the air flow direction. A drain supply hose 21 is connected to the lower end of the downward extending portion 20 a, and drain water flowing through the drain supply hose 21 can flow into the air conditioning connection duct 20.

  A drain discharge port 24, an upstream dam portion 22, and a downstream dam portion 23 are provided at the bottom of the horizontally extending portion 20b. The drain discharge port 24 is an opening provided on the downstream side of the portion where the drain supply hose 21 is connected in the air conditioning connection duct 20. The drain discharge port 24 is an opening through which drain water introduced into the air conditioning connection duct 20 is discharged to the outside of the air conditioning connection duct 20. A drain hose 25 is connected to the drain outlet 24 from the outside. As a result, the drain water flowing out from the drain discharge port 24 is guided to the outside of the vehicle by the discharge hose 25 and discharged from the lower side of the vehicle to the outside of the vehicle.

  The upstream dam portion 22 is provided on the upstream side of the drain discharge port 24 on the downstream side of the portion where the drain supply hose 21 is connected in the air conditioning connection duct 20. The upstream dam portion 22 blocks drain water introduced into the air conditioning connection duct 20. The upstream weir portion 22 forms a storage portion 26 in which drain water is stored at the bottom of the horizontally extending portion 20b. The drain water stored in the storage unit 26 exchanges heat with the cooling air flowing through the air conditioning connection duct 20 to further cool the cooling air. The storage unit 26 is an example of a heat exchange unit that exchanges heat between drain water and cooling air. The downstream dam portion 23 is provided on the downstream side of the discharge port. The downstream dam portion 23 blocks drain water in the same manner as the upstream dam portion 22. In particular, the downstream dam portion 23 blocks the drain water that has flowed downstream from the drain discharge port 24 so as not to flow further. It can be said that the downstream dam portion 23 is a dam portion that prevents drain water from entering the container 30.

  The container 30 is a box that forms a storage space in which the regenerator material 100 is stored. The container 30 is formed of a heat insulating material such as urethane foam or a member having a heat insulating structure such as a vacuum panel. In other words, the container 30 has a heat insulating property. The container 30 is placed on, for example, a floor portion in the passenger compartment. The container 30 is preferably placed below the window of the vehicle so that the amount of solar radiation that hits it can be suppressed. The container 30 is placed, for example, by the user in the vehicle compartment when in use, or removed from the vehicle compartment when not in use.

  The container 30 includes a lower seat portion 30a and a rear portion 30b. The under-seat portion 30a is formed in a flat and substantially rectangular parallelepiped. For example, two under-seat portions 30a are provided. The lower seat portion 30a is formed to have a height dimension that can be placed between the front seat (driver's seat and front passenger seat) and the floor of the vehicle. The lower seat portion 30a is formed to have a width dimension that can be placed between a pair of seat rails provided in each front seat. The lower seat portion 30a is located below the driver seat and the passenger seat in a state where the container 30 is placed. One end of the lower seat portion 30a is integrally connected to the rear portion 30b. The lower seat portion 30a is connected to the vicinity of the lower end of the rear portion 30b. An air intake 31 is formed at the other end opposite to the one end of the lower seat portion 30a, and the end of the air conditioning connection duct 20 is connected thereto. In other words, the front end of the lower seat portion 30 a in a state where the container 30 is placed is connected to the air conditioning connection duct 20.

  The rear portion 30b is formed in, for example, one substantially rectangular parallelepiped shape. The rear portion 30b is a substantially rectangular parallelepiped in which two under-seat portions 30a are provided on the same surface. The rear portion 30b is a portion where the air flowing through each of the two under-seat portions 30a merges. The rear portion 30b is placed in a space between the front seat and the rear seat of the vehicle. The rear portion 30b is formed to have a height that is approximately the same as or less than the seating surface of the rear seat, for example. As shown in FIG. 2, the rear portion 30 b is formed to have a width dimension that is approximately the same as the width dimension of the rear seat of the vehicle, for example. At the bottom of the rear portion 30b, a recess is formed that is recessed upward in the center portion in the width direction (left-right direction). This recessed part is a recessed part which avoids interference with the accommodating part of the propeller shaft in the floor part of a vehicle interior.

  A plurality of guides 37 are provided at the bottom of the container 30. The plurality of guides 37 are partition members that partition the inside of the container 30 into a plurality of sections as shown in FIGS. 4 and 5. The plurality of guides 37 are provided in both the lower seat portion 30a and the rear portion 30b. The plurality of guides 37 are provided so as to extend in the front-rear direction of the vehicle, for example, in a state where the container 30 is placed. The plurality of guides 37 are parallel to each other. The plurality of guides 37 are separated from the rear wall portion of the container 30 in the front-rear direction. In other words, the plurality of guides 37 are not directly connected to the rear wall portion of the container 30. The plurality of guides 37 are formed to have the same height as the upper end of the regenerative material 100 in the accommodated state.

  The plurality of guides 37 partitions a plurality of storage compartments in which the plurality of cool storage materials 100 are respectively placed inside the storage body. In other words, the cold storage material 100 is accommodated between the plurality of guides 37. The interval between the adjacent guides 37 is set to such a dimension that a sufficient ventilation space is formed between the cold storage material 100 and the guide 37 in a state where the cold storage material 100 is accommodated.

  An outlet 33 to which the connecting duct 40 is connected is formed in the rear portion 30 b of the container 30. For example, the outflow port 33 is formed on one of a pair of side surfaces in the width direction of the rear portion 30b. Outflow port 33 is located above cool storage material 100 in the housed state. More specifically, the outflow port 33 is formed such that its lower end is positioned higher than the upper end of the regenerator material 100 in a state where a specified amount is accommodated. The outlet 33 is an opening through which air inside the container 30 flows out.

  As shown in FIGS. 3 and 5, the housing 30 is provided with an opening 32 that communicates the housing space and the external space, and a lid 34 that closes the opening 32. The opening 32 is an opening formed above the outflow port 33. The opening part 32 is formed in the upper surface of the rear part 30b of the container 30, for example. The opening 32 is an opening that allows the user to put the cold storage material 100 into and out of the container 30.

  The lid part 34 can open and close the opening part 32 from the outside. The lid 34 is configured to be rotatable by a hinge structure, for example, and opens the opening 32 by being pulled up from the passenger compartment. Or the structure which open | releases the opening part 32 by the structure which slides to a horizontal direction may be sufficient. The lid 34 is opened by the user when the user stores and takes out the cold storage material 100, for example. The lid 34 is opened by the user when the cool storage material 100 is used for cooling the air in the passenger compartment.

  A partition plate 35 is provided on the lid 34. The partition plate 35 is, for example, a punching metal provided with a plurality of through holes. Air can be passed through the partition plate 35 by the plurality of through holes. The partition plate 35 is connected to the lid portion 34 by a connector 36. The partition plate 35 is fixed in a state of being separated from the lid portion 34 so as to be positioned below the outlet port 33 with the lid portion 34 closed. In other words, the partition plate 35 is provided so that the outlet 33 is located between the lid portion 34 and the partition plate 35 in the vertical direction. That is, for example, when the regenerator material 100 is loaded to a height equal to or higher than the outlet 33, the lid 34 cannot be completely closed because the partition plate 35 interferes with the regenerator material 100. The partition plate 35 is a restricting portion that regulates the height at which the regenerator material 100 is disposed so that the regenerator material 100 is not disposed to a height equal to or higher than the outlet 33.

  The cold storage material 100 is provided by a material having a relatively high latent heat, such as a mixture of water and a superabsorbent polymer. The cold storage material 100 is accommodated in a bag or a box. A commercial product can be used for the cold storage material 100. The regenerator material 100 is an example of a coolant that cools the air in the accommodation space. The cold storage material 100 is disposed between the guide 37 and the guide 37. The cold storage material 100 is arranged by the guide 37 so as to be separated from the cold storage material 100 adjacent in the width direction.

  The connection duct 40 is an example of a connection part that connects the container 30 and the battery case 52 so that air can flow therethrough. The connecting duct 40 connects the container 30 and the battery case 52. One end of the connecting duct 40 is connected to the outlet 33, and the other end is connected to the inlet 52a. The connecting duct 40 extends substantially linearly from the outlet 33 to the rear battery case 52. For example, the connecting duct 40 is located in a space between the side of the rear seat and the door of the vehicle. The connecting duct 40 can be attached to and detached from the container 30 and the battery case 52 by the user. The connection duct 40 is a passage forming member that guides the air cooled by the cold storage material 100 in the housing 30 to the inside of the battery case 52. The connecting duct 40 may be formed to be foldable by a bellows structure or a flexible material such as rubber. The connection duct 40 is an example of a connection member.

  The battery unit 50 supplies electric power to a motor that is used for driving of an electric vehicle, a hybrid vehicle, or the like. The battery unit 50 is installed, for example, between the rear seat of the vehicle and the trunk room. The battery unit 50 includes a battery cell 51, a battery case 52, and a blower 53. A plurality of battery cells 51 are accommodated inside the battery case 52. A plurality of battery cells 51 are electrically connected to each other to form a battery assembly. The battery cell 51 is, for example, a nickel hydrogen secondary battery, a lithium ion secondary battery, an organic radical battery, or the like.

  The battery case 52 is a housing that forms a battery housing space in which the battery cells 51 are housed. The battery case 52 is formed with an inlet 52a for introducing air. The introduction port 52a is formed in a portion of the battery case 52 exposed to the vehicle interior space. The connecting duct 40 can be connected to the introduction port 52a. The introduction port 52a is formed at a position shifted from the battery cell 51 in the left-right direction, for example. For example, the entire introduction port 52a is offset from the battery cell 51 in the left-right direction. Between the wall portion of the battery case 52 and the battery cell 51, a ventilation space through which air can flow is formed. The blower 53 drives the air inside the battery case 52 to form an air flow that is discharged from the battery case 52 to the outside. The blower 53 is provided, for example, at the rear of the battery case 52, and discharges the air in the battery case 52 to the trunk room. Or the duct etc. which guide the air in a battery case directly to the exterior of a vehicle may be connected to the air blower 53. FIG.

  The cooling system 1 supplies cool air from the vehicle air conditioner 10 to the housing 30, and stores the cool storage mode 100 in which the cool storage material 100 stores cool heat, and supplies the air cooled by the cool storage material 100 into the battery case 52. A cold mode. The cooling system 1 is used for cooling the battery cell 51 in so-called rapid charging in which the battery cell 51 is charged by flowing a large current to the battery cell 51 in a relatively short time. The cooling system 1 may be used in normal charging in which a small current is supplied to the battery cell 51 in a relatively long time with respect to rapid charging.

  First, the wind flow in the cold storage mode will be described. In the cool storage mode, the cool storage open / close door 19 is opened, and cool air flows from the lower cool air passage 13 of the battery unit 50 through the cool storage opening 18 into the connection duct 20. The cold air flows to the container 30 while being further cooled by the drain water stored at the bottom of the air conditioning connection duct 20. The cold air first flows into the lower seat portion 30 a and flows to the rear portion 30 b while flowing through the space between the cool storage material 100 and the cool storage material 100. The cold air gives cold to the cold storage material 100 while circulating between the cold storage materials 100. In other words, the cold storage material 100 is cooled by the cold air. A part of the cool air flowing between the cold storage materials 100 stays inside the container 30, and a part flows through the connection duct 40 from the outlet 33 and flows into the battery case 52.

  Below, the control which the control apparatus 90 performs in order to start the above-mentioned cool storage mode is demonstrated with reference to the flowchart of FIG. The control device 90 executes the flowchart of FIG. 7 while the vehicle is running, for example.

  First, in step S10, it is determined whether the refrigeration cycle is operating. Whether the refrigeration cycle is operating is determined based on, for example, whether an air conditioner switch installed on an instrument panel or the like is turned on. Or you may judge based on the operating state etc. of a compressor. The determination process in step S10 is repeated until it is determined that the refrigeration cycle is operating. If it is determined in step S10 that the refrigeration cycle is operating, the process proceeds to step S11.

  In step S11, it is determined whether or not a temperature reaching condition for determining that the vehicle interior temperature has reached the vehicle interior set temperature is satisfied. Whether or not the temperature reaching condition is satisfied may be determined, for example, based on whether or not the vehicle interior temperature is included in a predetermined temperature range including the vehicle interior set temperature. Step S11 is an example of a condition determination unit. If it is determined that the vehicle interior temperature has reached the vehicle interior set temperature, the process proceeds to step S12.

  In step S12, the cold storage open / close door 19 is controlled to be in an open state. That is, the cool storage open / close door 19 is controlled so that the cooled air flowing through the cool air passage 13 flows out of the cool storage opening 18. In other words, the cold storage mode is started. In the steady state in which the vehicle interior temperature reaches the vehicle interior set temperature by the processing of step S11 and step S12, a part of the cool air generated by the vehicle air conditioner 10 is blown to the housing 30 to store the cold. A mode can be realized. Step S12 is an example of a switching control unit. When the process of step S12 is executed, the process returns to step S10.

  On the other hand, if the temperature reaching condition is not satisfied in step S11, the process proceeds to step S13. In step S13, the cold storage open / close door 19 is controlled to be closed. If the vehicle interior temperature has not reached the vehicle interior set temperature by the processing in steps S11 and S13, that is, if the vehicle interior temperature is gradually changing toward the vehicle interior set temperature, the cold storage mode is refrained. be able to. When the process of step S13 is executed, the process returns to step S10.

  A part of the cool air generated by the vehicle air conditioner 10 under a steady state can be used for supplying cold heat to the regenerator material 100 under the control of steps S11 and S12. In addition, the control of steps S11 and S12 does not supply cold air to the regenerator material 100 in a fluctuating state. Therefore, in a situation where the supply of cold air to the vehicle interior is relatively necessary, The passenger comfort can be improved by giving priority to the supply.

  Next, the cooling mode will be described. The cooling mode is executed, for example, when an external charging device is connected to the vehicle and charging of the battery cell 51 is started. When the cooling mode is started, the blower 53 of the battery unit 50 starts to be driven. Thereby, the air inside the container 30 flows through the connection duct 40 and flows into the battery case 52, and an air flow that is blown out of the battery case 52 is forcibly formed. Since the air inside the container 30 is cooled by the cold storage material 100 stored in the cold storage mode, the air circulates inside the battery case 52, thereby contributing to the cooling of the battery cells 51.

  Next, the effect which the cooling system 1 of 1st Embodiment brings is demonstrated. The cooling system 1 according to the first embodiment includes an outlet 33 through which air flows out from the inside, and is connected to the housing 30 in which the regenerator material 100 that cools the air is stored, and the outlet 33. And a connecting duct 40 that forms a passage through which the outflowed air flows. The cooling system 1 has an introduction port 52a for introducing air into the interior, and is provided apart from the housing 30 via the connecting duct 40, and includes a battery case 52 in which the battery cells 51 are housed.

  According to this, the cool storage material 100 cools the air in the housing body 30 separated from the battery case 52 via the connection duct 40. The cooled air passes from the container 30 through the connection duct 40 and flows into the battery case 52 and contributes to cooling of the battery cells 51. Since the container 30 is provided at a position separated from the battery case 52 via the connecting duct 40, the cold storage material 100 enters the inside of the battery case 52 even when the cold storage material 100 leaks due to a vehicle collision. This can be suppressed. Thereby, the cooling system 1 which can suppress that the cool storage material 100 adheres to the battery cell 51 can be provided.

  The outlet 33 to which the connecting duct 40 in the container 30 is connected is formed above the cold storage material 100 in a state of being accommodated in the accommodation space. According to this, since the outflow port 33 is located above the cool storage material 100, even when the cool storage material 100 leaks out, the penetration | invasion to the outflow port 33 of the cool storage material 100 is suppressed. Therefore, it can suppress that the cool storage material 100 adheres to the battery cell 51 more reliably. In particular, the degree of freedom in designing the shape of the connecting duct 40 can be increased as compared with embodiments described later.

  The container 30 has a seat lower portion 30a positioned below the seat in a mounted state. According to this, since a part of the container 30 is located below the seat, it is possible to suppress the solar radiation from hitting this part, and it is possible to suppress the temperature rise of the regenerator material 100 accommodated in the container 30.

  The container 30 has a rear portion 30b located between the front seat and the rear seat in the mounted state. According to this, since a part of the container 30 is located between the front seat and the rear seat, it is possible to suppress the solar radiation from hitting this part by the seat, and the cold storage material accommodated in the container 30 100 temperature rise can be suppressed.

  The container 30 includes a partition plate 35 that restricts the cool storage material 100 from being arranged to the upper side of the outlet 33. According to this, when the user accommodates the cold storage material 100 in the container 30, it is possible to regulate the arrangement of the cold storage material 100 to a height equal to or higher than the outlet 33. Therefore, when the cool storage material 100 leaks out, it can suppress more reliably that it penetrates into the outflow port 33.

  The container 30 includes an opening 32 that communicates with the external space of the container 30 and a lid 34 that can close and open the opening 32. According to this, the user can open the lid portion 34 and appropriately store the cold storage material 100 in the container 30 or take it out from the container 30. Therefore, the state management of the cold storage material 100 by the user can be facilitated.

  The partition plate 35 is provided on the lid portion 34. According to this, the restriction | limiting of the arrangement | positioning height of the cool storage material 100 by the partition plate 35 is cancelled | released by opening the cover part 34. FIG. Therefore, it is possible to suppress the storage work and the take-out work of the cold storage material 100 from being obstructed by the partition plate 35.

  The cooling system 1 includes a cooling heat exchanger 12 for the vehicle air conditioner 10, an air conditioning case 11 for housing the cooling heat exchanger 12, and the air conditioning case 11 and the housing 30 with the cooling heat exchanger 12. The air-conditioning connection duct 20 connects the cooled air so that it can flow. According to this, the cooling air generated by the vehicle air conditioner 10 can be introduced into the housing 30. That is, the cold air of the vehicle air conditioner 10 can be used to cool the regenerator material 100.

  The cooling system 1 controls the cold storage opening / closing door 19 so that the cold storage opening / closing door 19 is opened when the temperature in the vehicle interior reaches the vehicle interior set temperature. According to this, when the temperature of the vehicle interior reaches the vehicle interior set temperature, that is, when the supply of cold air to the vehicle interior is relatively unnecessary, the cool storage material 100 is cooled by supplying the cool air to the container 30. Therefore, the air conditioning power of the vehicle air conditioner 10 can be used more effectively.

(Second Embodiment)
2nd Embodiment demonstrates the modification of the cooling system 1 in 1st Embodiment. In FIG. 7, the constituent elements denoted by the same reference numerals as those in the drawing of the first embodiment are the same constituent elements and exhibit the same operational effects.

  The cooling system 1 of the second embodiment is particularly different from the first embodiment in the configuration of the connecting duct 240. The connecting duct 240 includes an upstream portion 241 that is directly connected to the outlet 33, a downstream portion 243 that is connected to the introduction port 52 a of the battery case 52, and the upstream portion 241 and the downstream portion. And an extending portion 242 which is a portion continuous with the side portion 243. The extending portion 242 is a portion that extends so that the upstream side in the air flow is positioned below the downstream side. In other words, the extending portion 242 is a portion that extends from below to above along the air flow from the container 30 toward the battery case 52. In FIG. 8, the extending portion 242 is formed so as to extend perpendicular to the horizontal direction, but may be formed so as to extend obliquely upward from below.

  By forming the extending portion 242 in the connecting duct 240, even if the cool storage material 100 enters the connecting duct 240 from the outlet 33, the cool storage material 100 can be blocked by the vertically extending portion. Therefore, even if the outlet 33 is formed in the lower part of the container 30 as shown in FIG. 8, the cold storage material 100 can be more reliably prevented from adhering to the battery cell 51.

(Third embodiment)
In the third embodiment, a modification of the cooling system 1 in the first embodiment will be described. In FIG. 8 and FIG. 9, the constituent elements denoted by the same reference numerals as those in the drawings of the first embodiment are the same constituent elements and have the same operational effects.

  The cooling system 1 of the third embodiment is particularly different from the first embodiment in the configuration of the connecting duct 340. The connecting duct 40 has a discharge opening 341 and a discharge door 342. The discharge opening 341 is an opening formed at the bottom of the connection duct 340, for example. The discharge opening 341 leaks the cold storage material 100, which is a foreign substance that enters the inside of the connection duct 340, to the outside of the connection duct 340. The discharge door portion 342 is a switching door that switches between an open state in which the discharge opening 341 is opened and a closed state in which the discharge opening 341 is closed. The discharge door portion 342 can be provided by a slide door, a turning door that opens the discharge opening 341 by turning to the outside of the connecting duct 340, and the like. The discharge door part 342 is an example of an opening switching part. The discharge door portion 342 is controlled by the control device 90. The control device 90 is an example of an opening control unit. Further, the discharge door portion 342 may be controlled by a control device different from the control device 90.

  Next, an example of control of the discharge door portion 342 executed by the control device 90 will be described with reference to the flowchart of FIG. First, in step S30, the control device 90 determines whether or not a vehicle collision is detected. A vehicle collision is detected by, for example, an acceleration sensor disposed on a vehicle body frame at the front end of the vehicle. That is, the collision of the vehicle is detected when the acceleration sensor detects an acceleration equal to or higher than the threshold value. The control device 90 determines that a vehicle collision has been detected by acquiring collision detection information from the acceleration sensor. If it is determined that a vehicle collision has been detected, the process proceeds to step S31. Step S30 is an example of a collision determination unit.

  In step S31, the discharge door part 342 is controlled to an open state. Thereby, even if the cool storage material 100 enters the connecting duct 340, the cool storage material 100 can be discharged to the outside through the discharge opening 341. After executing the process of step S31, the control device 90 ends the process of FIG. On the other hand, if it is determined in step S30 that no collision has been detected, the process proceeds to step S32, the discharge door is kept closed, and the process returns to step S30 again. Step S31 is an example of an opening adjustment unit.

  In the cooling system 1 of the third embodiment, the connection duct 340 is provided with a discharge opening 341 and a discharge door 342, and the discharge door 342 is opened when the vehicle detects a collision. According to this, since the discharge opening 341 is opened when the vehicle collides, even if the cold storage material 100 enters the connection duct 340, it can be discharged to the outside upstream of the battery case 52. Thereby, adhesion of the cool storage material 100 to the battery cell 51 can be prevented more reliably.

(Fourth embodiment)
In the fourth embodiment, a modification of the cooling system 1 in the first embodiment will be described. In FIG. 10 and FIG. 11, the constituent elements denoted by the same reference numerals as those in the drawings of the first embodiment are the same constituent elements and have the same operational effects.

  The cooling system 1 of the fourth embodiment is particularly different from the first embodiment in the configuration of the connecting duct 440. The connecting duct 440 is provided with a blocking door portion 441. The blocking door portion 441 is a door that permits and prohibits communication between the housing 30 and the battery case 52 of the connecting duct 440. The blocking door unit 441 is in a permitted state in which normal communication is permitted. When the vehicle collides, the blocking door portion 441 closes the connecting duct 440 to be in a blocking state, and prohibits the communication between the container 30 and the battery case 52, so that the cold storage material 100 that is a foreign substance from the container 30 is used. Is prevented from entering the battery case 52. The blocking door unit 441 is an example of a communication switching unit. The blocking door unit 441 is controlled by the control device 90. The control device 90 is an example of a communication control unit. Alternatively, the blocking door unit 441 may be controlled by a control device different from the control device 90.

  Next, an example of the control of the blocking door unit 441 performed by the control device 90 will be described with reference to the flowchart of FIG. The controller 90 first determines in step S40 whether or not a vehicle collision has been detected. The process of step S40 is the same as the process of step S30 of the third embodiment. If it is determined that a vehicle collision has been detected, the process proceeds to step S41. Step S40 is an example of a collision determination unit.

  In step S41, the blocking door portion 441 is controlled to be closed. Thereby, even if the cool storage material 100 enters the connecting duct 440, the cool door 100 can block the flow of the cool storage material 100 and prevent the cool storage material 100 from entering the battery case 52. After executing the process of step S41, the control device 90 ends the process of FIG. On the other hand, if it is determined in step S40 that no collision has been detected, the process proceeds to step S42, the blocking door portion 441 is maintained in the open state, and the process returns to step S40 again. Step S41 is an example of a communication adjustment unit.

  In the cooling system 1 of 4th Embodiment, the interruption | blocking door part 441 which interrupts | blocks communication of the connection duct 440 is provided, and the interruption | blocking door part 441 will be in an open state, if a vehicle detects a collision. According to this, even if the cool storage material 100 enters the connection duct 440, the shut-off door portion 441 can prevent the cool storage material 100 from entering the battery case 52. Thereby, adhesion of the cool storage material 100 to the battery cell 51 can be prevented more reliably.

(Other embodiments)
The disclosure in this specification is not limited to the illustrated embodiments. The disclosure encompasses the illustrated embodiments and variations by those skilled in the art based thereon. For example, the disclosure is not limited to the combinations of parts and / or elements shown in the embodiments. The disclosure can be implemented in various combinations. The disclosure may have additional parts that can be added to the embodiments. The disclosure includes those in which parts and / or elements of the embodiments are omitted. The disclosure encompasses the replacement or combination of parts and / or elements between one embodiment and another. The technical scope disclosed is not limited to the description of the embodiments. Some technical scope disclosed is indicated by the description of the claims, and should be understood to include all modifications within the meaning and scope equivalent to the description of the claims. .

  In the above-described embodiment, the regenerator material 100 is accommodated in the container 30 as a coolant for cooling air. Instead of this, ice water or cold water may be used as the coolant. The coolant stored in the container 30 can be arbitrarily selected by the user.

  In the above-described embodiment, the container 30 and the connecting ducts 40, 240, 340, and 440 are each installed by the user during use, but may be configured to be installed in advance in the vehicle.

  In the above-described embodiment, the container 30 has the lower seat portion 30a and the rear portion 30b. However, the container 30 may be formed in the size and shape provided below the seat, or the front seat. And a size and shape provided between the rear seat and the rear seat.

  In the above-described embodiment, the container 30 is installed on the floor of the vehicle, but the installation position of the container 30 is not limited to this. The container 30 may be placed on, for example, a seat surface of a seat without an occupant, a trunk room, or the like.

  In the above-described embodiment, the container 30 is connected to the vehicle air conditioner 10 through the air conditioning connection duct 20 and cools the regenerator material 100 with the cold air generated by the vehicle air conditioner 10. The air conditioner 10 may not necessarily be connected. For example, the cool storage material 100, ice water, cold water, or the like that has been cooled in advance may be accommodated in the housing 30 as a coolant, and the air inside the housing 30 may be cooled by the coolant. In this case, the air intake 31 for connecting to the air conditioning connection duct 20 in the container 30 can be omitted.

    DESCRIPTION OF SYMBOLS 1 Cooling system, 11 Air-conditioning case, 12 Cooling heat exchanger, 19 Cold storage opening / closing door (air-conditioning wind switching part), 20 Air-conditioning connection duct, 26 Storage part (heat exchange part) 30 Housing, 32 Opening part, 33 flow Exit, 34 Lid, 342 Discharge door (opening switching part), 35 Partition plate (regulating part), 40, 240, 340, 440 Connecting duct (connecting member), 242 Extending part, 341 Discharge opening, 441 Communication switching Unit, 51 battery cell, 52 battery case, 52a inlet, 100 cool storage material (coolant), 90 control device (communication control unit, opening control unit, air conditioning control unit), S11 condition determination unit, S12 switching control unit, S30 Collision determination unit, S31 opening adjustment unit, S40 collision determination unit, S41 communication adjustment unit.

Claims (13)

A cooling system for cooling a battery cell (51) mounted on a vehicle,
A container (30) having an outlet (33) through which air flows out from the interior, and containing a coolant (100) for cooling the air;
A connecting member (40, 240, 340, 440) connected to the outlet and forming a passage through which the air flowing out of the outlet flows;
A battery case (52) having an introduction port (52a) for introducing the air therein, spaced apart from the container via the connecting member, and housing the battery cells;
With cooling system. The outlet is
The cooling system of Claim 1 currently formed above the said coolant in the state accommodated in the said container. The connecting member (240)
The cooling system according to claim 1 or 2, wherein the cooling system is a duct having an extending portion (242) in which an upstream side in an air flow from the container toward the battery case is positioned below a downstream side. A communication switching unit (441) capable of switching between a communication state and a blocking state for the passage of the connection member;
A communication control unit (90) for controlling the communication switching unit;
With
The communication control unit
A collision determination unit (S40) for determining whether or not the vehicle has collided;
A communication adjustment unit (S41) for controlling the communication switching unit so that the passage is in the blocked state when the collision determination unit determines that the vehicle has collided;
The cooling system according to claim 1, comprising: A discharge opening (341) provided at a position where foreign matter that has entered the connecting member can be discharged;
An opening switching portion (342) capable of switching between an open state of the discharge opening and a closed state of the discharge opening;
An opening control unit (90) for controlling the opening switching unit;
With
The opening controller is
A collision determination unit (S30) for determining whether or not the vehicle has collided;
An opening adjustment unit (S31) for controlling the opening switching unit so that the discharge opening is in the open state when the collision determination unit determines that the vehicle has collided;
The cooling system according to claim 1, comprising: The container is
An opening (32) communicating the inside and the outside of the container;
A lid (34) capable of closing and opening the opening;
The cooling system according to claim 1, comprising: The container is
The cooling system according to claim 6, further comprising a regulating portion (35) that regulates a height of the coolant so that the coolant is disposed at a height lower than the outlet. The opening is provided above the outlet,
The cooling system according to claim 7, wherein the restricting portion is provided in the lid portion.   The cooling system according to any one of claims 1 to 8, wherein a part or all of the container is installed below a seat in a vehicle compartment.   The cooling system according to any one of claims 1 to 8, wherein a part or all of the container is installed between seats arranged in the front-rear direction of the vehicle. A vehicle comprising: a cooling heat exchanger (12) for cooling air; and an air conditioning case (11) in which the cooling heat exchanger is accommodated and the cooling air cooled by the cooling heat exchanger flows. A vehicle air conditioner for air conditioning the room;
An air conditioning connection duct (20) for connecting the air conditioning case and the container so that the cooling air can flow; and
The cooling system according to any one of claims 1 to 10, further comprising: An conditioned air switching unit (19) that permits and prohibits communication between the container and the air conditioning case;
An air conditioning control unit (90) for controlling the air conditioning wind switching unit;
Further comprising
The air conditioning controller
A condition determination unit (S11) for determining whether or not a temperature reaching condition for the temperature in the vehicle interior to reach the vehicle interior set temperature is satisfied;
A switching control unit (S12) that controls the conditioned air switching unit to allow communication between the container and the air conditioning case when it is determined that the temperature reaching condition is satisfied;
The cooling system according to claim 11.   The said air-conditioning connection duct further has a heat exchange part (26) which heat-exchanges the drain water which generate | occur | produces in the said heat exchanger for cooling, and the said cooling air in the said air-conditioning connection duct. The cooling system described.

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