JP2010092722A - Battery temperature conditioning device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a battery temperature conditioning device capable of preferentially heating a battery cell arranged at both ends at the time of warming up. <P>SOLUTION: The battery temperature conditioning device has a housing case and battery cells. The battery cells are arranged in the housing case at prescribed spacings. Passages in which a temperature conditioning medium flows are formed between the battery cells and between the battery cell and the inner wall of the housing case. The direction in which the battery cells are arranged and the direction (flowing direction) in which the temperature conditioning medium flows into the housing case are perpendicular. Further, the temperature conditioning medium flowing part supplies the temperature conditioning medium flowed into the housing case into the passages adjacent to the battery cells at both the ends in the arrangement direction out of a plurality of passages. Thereby, the battery temperature conditioning device warms up the battery cells at both the ends positively and preferentially. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a technique for adjusting the temperature of a battery mounted on a vehicle.

  2. Description of the Related Art Conventionally, a technique for cooling a battery that has reached a high temperature by blowing air from the cabin to the battery using a blower or the like has been proposed. For example, in Patent Document 1, the height of fins (rectifying plates) is stepped as the distance from the inflow side to the outflow side increases so as to uniformly cool and heat a plurality of battery cells arranged in the battery package. The battery temperature control device formed to decrease is described.

JP 2008-135358 A

  However, at the time of warming up, the battery cells arranged at both ends of the battery cells are slower in temperature rise and the temperature is greatly reduced. Therefore, when the battery cells are uniformly warmed up, the battery temperature adjusting device may not be able to sufficiently or efficiently perform the warming up of the battery cells arranged at both ends. On the other hand, Patent Document 1 does not discuss the above-described problem.

  The present invention has been made to solve the above-described problems, and provides a battery temperature control device capable of preferentially heating battery cells disposed at both ends during warm-up. With the goal.

  In one aspect of the present invention, the battery temperature adjusting device is arranged at a predetermined interval in a storage case into which the temperature control medium flows, and an arrangement direction that is disposed in the storage case and faces the flow direction of the temperature control medium. A plurality of battery cells, a plurality of flow paths formed adjacent to the plurality of battery cells in the storage case, and a temperature control medium that has flowed into the storage case, of the plurality of flow paths, And a temperature control medium inflow portion that supplies a flow path adjacent to the battery cells at both ends in the arrangement direction.

  The battery temperature adjusting device is suitably applied to a hybrid vehicle, an electric vehicle, and the like. The battery temperature adjusting device includes a storage case and a battery cell. The battery cells are arranged in the storage case at a predetermined interval. A flow path through which the temperature control medium flows is formed between the battery cells and between the battery cell and the inner wall of the storage case. The temperature control medium may be, for example, warmed-up air in a vehicle cabin or other fluid such as water. The direction in which the battery cells are arranged is opposed to the direction (flow direction) in which the temperature control medium flows into the storage case. That is, the direction in which the battery cells are arranged and the flow direction of the temperature control medium are directions that intersect with each other, for example, the two are in a vertical relationship. The temperature adjustment medium inflow section supplies the temperature adjustment medium flowing into the storage case to a flow path adjacent to the battery cells at both ends in the arrangement direction among the plurality of flow paths.

  In general, when warming up, battery cells at both ends (near both ends) are slower in temperature than battery cells at the center (near the center). On the other hand, the battery temperature adjusting device described above actively and preferentially controls the battery cells at both ends by providing temperature adjusting medium inflow portions that supply the flow paths adjacent to the battery cells at both ends in the arrangement direction. Warm up. Therefore, the battery temperature adjusting device can efficiently raise the temperature of the battery cell.

  In one aspect of the battery temperature control device, the battery control device further includes one or a plurality of rectifying plates that adjust the flow of the temperature control medium, and the rectifying plates are adjacent to the battery cells at both ends when warmed up. The temperature control medium that has passed through is supplied to the flow path adjacent to the battery cell in the center.

  In this aspect, the battery temperature adjusting device has a current plate in the storage case. The flow path is, for example, a gap formed between the arranged battery cells. The rectifying plate is installed so that the temperature control medium that has passed through the flow path adjacent to the battery cells at both ends can be supplied to the flow path adjacent to the battery cell at the center. By doing in this way, the battery temperature control apparatus can also warm up the battery cell of a center part, preferentially warming up the battery cell of both ends.

  In another aspect of the battery temperature adjusting device, the battery temperature adjusting device is preferentially arranged in the flow path adjacent to the battery cells at both ends than in the flow path adjacent to the battery cells in the center portion when warming up. A control means is provided for flowing the temperature adjusting medium and preferentially flowing the temperature adjusting medium in the flow path adjacent to the battery cell in the central part over the flow path adjacent to the battery cell in both ends during cooling. The control means is, for example, an ECU (Electronic Control Unit). In general, at the time of warming up, the battery cells at both ends are likely to be at a lower temperature than the target temperature. On the other hand, at the time of cooling, the battery cell in the central part tends to be hotter than the target temperature. Therefore, in this aspect, the control means can efficiently warm up and cool the battery cells by switching the flow of the temperature control medium between warming up and cooling.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

[First embodiment]
First, a first embodiment of the present invention will be described.

(overall structure)
FIG. 1 is a schematic configuration diagram of a battery temperature adjusting device 100 according to the first embodiment. In addition, the solid line arrow in a figure shows the flow of air, and the broken line arrow has shown the input / output of the signal.

  The battery temperature adjusting device 100 mainly includes an intake passage 1, a blower 2, a battery 3, a battery temperature sensor 4, a storage case 5, an exhaust passage 6, and an ECU 10. The battery temperature adjusting device 100 is mounted on, for example, a hybrid vehicle (HV vehicle) or an electric vehicle (EV vehicle).

  The blower 2 is configured to suck air from the cabin (cabinet) from the suction passage 1 and blow the air to the battery 3. The operation of the blower 2 is controlled by a control signal S1 supplied from the ECU 10. The battery 3 is composed of a secondary battery or the like, and functions as a power source for components in the vehicle. As will be described later, the battery 3 includes a plurality of battery cells connected in series. The battery temperature sensor 4 is a sensor configured to be able to detect the temperature of the battery 3 (battery temperature), and supplies a detection signal S2 corresponding to the detected battery temperature to the ECU 10.

  The storage case 5 is a case for storing the battery 3. The storage case 5 is connected to the suction passage 1 and the exhaust passage 6. A blower 2 is installed on the suction passage 1. The suction passage 1 sends wind generated by driving the blower 2 (hereinafter referred to as “blower wind”) into the storage case 5. The exhaust passage 6 discharges the blower air that warms or cools the battery 3 out of the storage case 5.

  The ECU 10 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like (not shown), and mainly warms the battery 3 by blowing air from the cabin to the battery 3. The blower 2 is controlled so that the machine is operated (that is, the control signal S1 is supplied to the blower 2). In this case, the ECU 10 drives the blower 2 based on the detection signal S2 supplied from the battery temperature sensor 4 as an example.

(Configuration in the storage case)
Next, the configuration in the storage case 5 will be specifically described. FIG. 2 is an example of a top view inside the storage case 5. As shown in FIG. 2, the battery 3 is present in the storage case 5. Arrows indicate air flow.

  The battery 3 includes a plurality of battery cells including battery cells 3a to 3h. The battery cells are connected in series, and are arranged in the storage case 5 at a predetermined interval in a direction crossing the direction in which the blower air flows from the suction passage 1. Specifically, the direction in which the battery cells are arranged is perpendicular to the blower wind direction (flow direction). Among the battery cells, the battery cells (battery cells 3a to 3d in this case) arranged at or near both ends are hereinafter referred to as “battery cells at both ends”, and are inside (close to the center) from the battery cells at both ends. The battery cells (here, the battery cells 3e to 3f) arranged in the above are hereinafter referred to as “central battery cells”.

  A flow path 9 through which air can flow is formed between the battery cells or between the battery cell and the storage case. For example, a flow path 9a is formed between the battery cell 3a and the storage case 5, and a flow path 9b is formed between the battery cell 3a and the battery cell 3b. Hereinafter, the flow paths adjacent to the battery cells at both ends (here, flow paths 9a to 9d) are referred to as “flow paths at both ends”, and the flow paths adjacent to the battery cells at the center (here, flow paths). 9e to 9h) is hereinafter referred to as “central channel”.

  The suction passage 1 branches into a first passage 13x and a second passage 13y. The end portion 15x of the first passage 13x and the end portion 15y of the second passage are in the vicinity of both ends in the storage case 5 in the direction in which the battery cells are arranged (hereinafter simply referred to as “both ends of the storage case 5”). Present). That is, the end portion 15x is installed at a position where the blower air can be supplied to one of the flow paths 9a and 9b (hereinafter referred to as “first end flow path”) among the flow paths at both ends. The part 15y is installed at a position where blower air can be supplied to the other-side flow paths 9c, 9d (hereinafter referred to as "second end flow paths") among the flow paths at both ends. More specifically, the terminal portion 15x exists in the extending direction of the first end flow paths 9a and 9b, and the terminal end 15y exists in the extending direction of the second end flow paths 9c and 9d. To do.

  As described above, by arranging the terminal portions 15x and 15y at both ends of the storage case 5, the battery temperature adjusting device 100 can positively flow blower air into the flow paths 9a to 9d at both ends. Specifically, the ECU 10 drives the blower 2 by transmitting a control signal S <b> 1 to the blower 2. As a result, the propeller of the blower 2 rotates, and blower wind from the suction passage 1 to the exhaust passage 6 is generated. The blower air that has passed through the first passage 13x exits the end portion 15x and then passes through the flow paths 9a and 9b at the first end. Similarly, the blower wind that has passed through the second passage 13y exits from the end portion 15y and then passes through the flow paths 9c and 9d at the second end. By doing in this way, the battery temperature adjusting apparatus 100 preferentially warms the battery cells 3a to 3d at both ends, which are slow in temperature rise and low in temperature, more preferentially than the battery cells in the central part including the battery cells 3e to 3h. Can be. In particular, the blower air passes through the flow paths 9a to 9d adjacent to both sides of the battery cells 3a and 3c (hereinafter referred to as “end cells”) located at the extreme ends. Therefore, the battery temperature adjusting device 100 can warm up the end cells 3a and 3c most actively.

  On the other hand, when the blower air is introduced from the suction passage 1 toward the vicinity of the center of the storage case 5 without branching the suction passage 1 into the first passage 13x and the second passage 13y, the flow passage 9 extends. The blower air flows only through the flow path in the central part due to the parallel flow direction and the flow of the blower air supplied from the suction passage 1. Therefore, it becomes difficult to distribute the blower air to the flow paths at both ends. In contrast, in the present embodiment, the intake passage 1 is branched into the first passage 13x and the second passage 13y, and the end portions 15x and 15y are provided at both ends of the storage case 5, whereby the ECU 10 The blower air can be actively flowed through the flow path of the part.

  Furthermore, it supplements about the effect in this embodiment. FIG. 3 shows the relationship between battery cell numbers (cell numbers) and battery cell temperatures (cell temperatures) for 28 battery cells numbered in the order of arrangement. In FIG. 3, the battery 3 is heated until the lowest temperature (hereinafter referred to as “the lowest temperature of the battery cell”) among the temperatures of the battery cells is changed from −30 ° C. to −10 ° C. As shown in FIG. 3, the temperature rise of the battery cells at both ends is slower than the temperature rise of the battery cells at the center. In general, the input / output performance (charge and discharge performance) of battery cells connected in series at a low temperature is affected by the minimum temperature of the battery cells. Therefore, the battery temperature control apparatus 100 efficiently raises the minimum temperature of the battery cells by warming up the battery cells (particularly, the end cells) at both ends with priority over the battery cells at the center, The input / output performance of the battery cell can be improved.

  Note that the configuration of the battery temperature adjusting device 100 shown in FIG. 2 is an example, and the configuration to which the present invention is applicable is not necessarily limited thereto. For example, in the above-described example, the battery temperature adjusting device 100 preferentially warms up the four battery cells 3a to 3d. However, the configuration to which the present invention can be applied is not limited to this, and the battery temperature adjustment device 100 sets the number of battery cells to be preferentially warmed up more or less based on the total number of battery cells. May be. In this case, the terminal portions 15x and 15y are set so that the size (width) of the mouth is wider or narrower than that of FIG. 2 according to the number of battery cells that are warmed up preferentially. For example, when the battery cells 3e and 3g are preferentially warmed up in addition to the battery cells 3a to 3d, the end portions 15x and 15y are set to have a large width so that the width of the arrow 70 is narrowed.

(Modification)
In the above-described embodiment, the battery temperature adjusting device 100 generates wind that warms up the battery 3 by the blower 2 using the air of the cabin. However, the configuration to which the present invention can be applied is not limited to this. Instead, the battery temperature adjusting device 100 may warm up the battery 3 with a fluid such as a liquid. In this case, a pump or the like is installed instead of the blower 2. And the battery temperature control apparatus 100 can warm up the battery cell of both ends preferentially by arrange | positioning termination | terminus parts 15x and 15y in the both ends of the storage case 5 similarly to the above-mentioned embodiment. This modification can also be applied to the following embodiments.

[Second Embodiment]
In the above-described embodiment, the battery temperature adjusting device 100 is provided with the first passage 13x and the second passage 13y branched from the suction passage 1, and the terminal portions 15x and 15y are installed at both ends of the storage plate 5. It was. On the other hand, the battery temperature control apparatus 100 according to the second embodiment blocks the flow path at the center and provides flow paths at both ends instead of providing the first path 13x and the second path 13y. Installs a plate (rectifying plate) capable of supplying blower air in the storage case 5. Also by this, the battery temperature control apparatus 100 can warm up the battery cell of both ends preferentially rather than the battery cell of a center part.

  Fig.4 (a) is an example of the top view in the storage case 5 which concerns on 2nd Embodiment. As shown in FIG. 4A, the battery temperature adjusting device 100 has a rectangular plate 20 in the storage case 5. The plate 20 is a rectifying plate fixed in the storage case 5. The plate 20 extends in the direction in which the battery cells are arranged, and faces the battery cell in the center. The plate 20 and the inner wall of the storage case 5 form a passage through which blower air can flow at both ends of the storage case 5. In FIG. 4A, the above-described passage opening corresponds to the space in the broken line frame 60x and the space in the broken line frame 60y. Hereinafter, the mouth formed in the broken line frame 60x is referred to as a “first passage opening”, and the mouth formed in the broken line frame 60y is referred to as a “second passage opening”. Each of the first passage port and the second passage port is an example of the temperature adjusting medium inflow portion in the present invention.

  FIG. 4B is an example of a side view of the inside of the storage case 5 viewed in the direction of the arrow 90. As shown in FIG. 4B, the plate 20 partitions the central portion of the storage case 5 so as to face the central battery cell and also face the central flow path including the flow paths 9e to 9h. The plate 20 does not oppose the end cells 3a and 3c and the flow paths 9a to 9d adjacent to the end cells 3a and 3c. That is, the plate 20 and the inner wall of the storage case 5 form an interval (space) having widths 71 and 72 at both ends of the storage case 5. In other words, the plate 20 is installed at a position where blower air can be supplied to the flow paths 9a to 9d at both ends. The space with the width 71 corresponds to the above-described first passage port, and the space with the width 72 corresponds to the above-described second passage port.

  FIG. 4C is an example of a side view as viewed in the direction of the arrow 91 in the storage case 5. As shown in FIG. 4C, the plate 20 is fixed in the storage case 5 so as to partition the storage case 5. More specifically, the end 20 y of the plate 20 is fixed to the lower surface of the storage case 5, and the end 20 x opposite to the end 20 y is fixed to the inner wall of the upper surface of the storage case 5. Thereby, the plate 20 shields the blower wind which goes to the flow path of a center part.

  In this way, by forming the first and second passage ports by making the length of the plate 20 smaller than the width of the storage case, the battery temperature adjusting device 100 allows the blower air to flow through the flow paths 9a to 9d at both ends. Can be actively shed. Specifically, the blower 2 is driven based on the control of the ECU 10 to generate a blower wind that flows from the suction passage 1 to the exhaust passage 6. The blower air that has passed through the suction passage 1 passes through the first passage port or the second passage port. Further, the blower air that has passed through the first passage port passes through the flow paths 9a and 9b at the first end, and the blower air that has passed through the second passage port has flow paths 9c and 9d at the second end portion. Pass through. Therefore, the battery temperature control apparatus 100 according to the second embodiment warms up the battery cells 3a to 3d at both ends more preferentially than the battery cell at the center, and particularly warms up the end cells 3a and 3c most preferentially. Can be.

[Third embodiment]
In the second embodiment, the plate 20 was fixed. On the other hand, the battery temperature control apparatus 100 according to the third embodiment includes a movable plate instead of the fixed plate 20. Thereby, the battery temperature control apparatus 100 can prevent blocking the flow path of a center part unnecessarily.

  Fig.5 (a) is an example of the top view in the storage case 5 which concerns on 3rd Embodiment. As shown in FIG. 5A, the battery temperature adjusting device 100 has a rectangular plate 21. The plate 21 is a movable rectifying plate. The structure of the plate 21 will be described with reference to FIGS. 5B and 5C. FIG. 5B is a side view seen in the direction of the arrow 93 in the storage case 5 in a case other than the warm-up time (hereinafter referred to as “normal time”). And FIG.5 (c) is the side view seen in the arrow 93 direction in the storage case 5 at the time of warming-up.

  As shown in FIGS. 5B and 5C, the plate 21 has an end 21y fixed to the storage case 5, and draws a circle (sector shape) around the fixed end 21y. Rotate. The plate 21 is a wind type. Specifically, the plate 21 has a curved end portion 21x opposite to (facing to) the fixed end portion 21y. A stopper 25 is provided in the storage case 5 to limit the position of the plate 21 during warm-up.

  Then, the plate 21 rotates and moves around the end 21y from the state shown in FIG. 5B to the state shown in FIG. Specifically, as shown in FIG. 5B, the plate 21 lies inside the storage case 5 due to gravity or the like in a normal state. When warming up, blower wind is generated, and the curved end portion 21x receives blower wind force with the plate 21 lying down. As a result, the plate 21 is brought into an upright state as shown in FIG. That is, as shown in FIG. 5C, during warm-up, the plate 21 stands in the vertical direction so that the end 21x is in contact with the upper surface of the storage case 5. At this time, the stopper 25 restricts the rotation of the plate 21 so that the plate 21 does not fall to the battery 3 side. As a result, the plate 21 shields the central flow path from the blower air, and forms a first passage port and a second passage port. On the other hand, when the blower wind becomes equal to or less than the predetermined wind force, the plate 21 returns from the state shown in FIG. 5C to the state shown in FIG.

  As described above, in the battery temperature adjusting device 100 according to the third embodiment, the plate 21 stands up by the blower wind force during warm-up, and the first and second passage openings are formed. Thereby, a blower wind can be actively sent to the flow path of both ends. On the other hand, in the normal time when the blower 2 is not driven, the battery temperature adjusting device 100 does not unnecessarily block the central flow path because the plate 21 lies in the storage case 5.

  The plate 21 is not limited to the wind type, but may be an electric type instead. In this case, for example, the plate 21 is electrically connected to the ECU 10, and based on the control signal of the ECU 10, the plate 21 is in the state shown in FIG. 5B except during warm-up, and in the state shown in FIG. 5C during warm-up. It is controlled to become.

[Fourth embodiment]
In the first to third embodiments, the first passage 13x and the second passage 13y, or the fixed plate 20 or the movable plate 21 are installed, so that the flow path at both ends is positively provided. The blower wind was sent to warm the battery cells at both ends. In addition, the battery temperature control apparatus 100 according to the fourth embodiment includes a rectifying plate in the storage case 5 that supplies the blower air that has passed through the flow paths at both ends to the flow path at the center. By doing in this way, the battery temperature control apparatus 100 which concerns on 4th Embodiment can warm up the battery cell of a center part preferentially warming up the battery cell of both ends.

  FIG. 6 is an example of a top view inside the storage case 5 according to the fourth embodiment. As shown in FIG. 6, a fixed plate 20 is installed so as to face the battery cell in the center. And between the plate 20 and the storage case 5, the 1st and 2nd channel | path port which can distribute | circulate a blower wind is formed.

  In addition, a plurality of rectifying plates 30 are installed in the storage plate 5 so that blower air that has passed through the flow paths at both ends can be supplied to the flow path at the center. In FIG. 6, the current plate 30 includes current plates 30a to 30h. The rectifying plates 30 a to 30 h are fixed to at least one of the battery cell, the plate 20, or the inner wall of the storage case 5. The rectifying plate 30 a is installed across the battery cell 3 b and the plate 20, that is, so as to close the space between the battery cell 3 b and the plate 20. In other words, the current plate 30a is installed at a position where the blower air that has passed through the first passage port can be supplied to the flow paths 9a and 9b at the first end. Further, the rectifying plate 30b is installed so as to close the gap between the battery cell 3e and the storage case 5. That is, the rectifying plate 30b is disposed at a position where the blower air that has passed through the first end flow paths 9a and 9b can be supplied from the flow path 9b to the flow path 9e adjacent to the inside (center side) of the storage case 5. Is done. The rectifying plate 30c is installed so as to be able to supply the blower air that has passed through the flow channel 9e to the flow channel 9f adjacent to the center side, and the rectifying plate 30d is provided with the blower air that has passed through the flow channel 9f. It is installed so that it can be supplied to. Similarly, the rectifying plates 30e to 30h are provided in the storage case 5 so that the blower air that has passed through the flow paths 9c and 9d at the second end can be supplied to the flow paths 9i, 9j, and 9k in order. Respectively.

  By arranging the rectifying plates 30a to 30h in this way, the battery temperature adjusting device 100 allows the blower air that has passed through the flow paths 9a to 9d at both ends to flow to the central flow path including the flow paths 9e to 9l. be able to. First, the blower 2 driven based on the control of the ECU 10 generates blower wind from the suction passage 1 to the exhaust passage 6. The blower air flowing into the storage case 5 from the suction passage 1 is divided by the plate 20 into a blower air passing through the first passage port and a blower air passing through the second passage port. And the blower wind which passed the 1st channel | path opening first passes the flow paths 9a and 9b of a 1st edge part. The blower air that has passed through the first end flow paths 9a and 9b passes through the flow path 9e adjacent to the inside of the storage case 5 from the flow path 9b. And the blower wind which passed the flow path 9e passes to the flow path 9f and the flow path 9g in order. And the blower wind which passed the flow path 9g flows into the flow path inside the flow path 9g containing the flow path 9h. Note that the rectifying plate 30 is not provided in the battery cell at the center side from the battery cell 3g including the battery cell 3h. Accordingly, the blower air flows in the same direction toward the exhaust passage 6 in the channel closer to the center than the channel 9g including the channel 9h.

  Similarly, the blower air exiting the second passage port first passes through the flow paths 9c and 9d at the second end, then passes through the flow path 9i, and then flows to the flow path 9j. The blower air that has flowed through the flow path 9j flows through the flow path 9k and then flows into the flow path closer to the center than the flow path 9k including the flow path 9l. At this time, the blower wind passes through the flow path closer to the center than the flow path 9 k including the flow path 9 l in the same direction and reaches the exhaust passage 6.

  As described above, the battery temperature control apparatus 100 according to the fourth embodiment includes the plurality of rectifying plates 30 so that the blower air that has passed through the flow paths at both ends passes through all the flow paths between the other battery cells. Provided. By doing in this way, the battery temperature control apparatus 100 can warm up also about the battery cell of a center part, preferentially warming up the battery cell of both ends.

[Fifth Embodiment]
The battery temperature control apparatus 100 according to the fourth embodiment is provided with a rectifying plate 30 and allows the blower air that has passed through the flow paths at both ends to flow through the flow path at the center, warming up the battery cells at both ends with priority. However, warming up of the battery cell in the center was also performed. On the other hand, when the battery 3 becomes higher than the target temperature, the battery temperature adjusting device 100 needs to cool the battery 3. During cooling, the battery 3 in particular has a higher temperature than the target temperature in the central battery cell. That is, at the time of cooling, the battery temperature adjusting device 100 needs to cool the battery cells in the central part preferentially over the battery cells at both ends. Therefore, the battery temperature control apparatus 100 according to the fifth embodiment includes a wind-type plate 21 instead of the fixed plate 20, and the blower air flows from the flow path at both ends to the flow path at the center when warming up. When cooling, the blower air flows from the central channel to the channel on both ends. By doing in this way, the battery temperature control apparatus 100 can appropriately perform both warming up and cooling of the battery 3.

  FIG. 7 is an example of a top view inside the storage case 5 in the fifth embodiment. Specifically, FIG. 7A shows a top view inside the storage case 5 during warm-up, and FIG. 7B shows a top view inside the storage case 5 during cooling. As shown in FIGS. 7A and 7B, rectifying plates 30a to 30h are installed at the same positions as in the fourth embodiment. The rectifying plates 30 a to 30 h are fixed to at least one of the battery cell or the inner wall of the storage case 5. The plate 21 is a wind-type rectifying plate capable of alternately changing between a lying state as shown in FIG. 5B and a standing state as shown in FIG.

  When the blower 2 is driven during warm-up, the plate 21 changes from the state shown in FIG. 5B to the state shown in FIG. Specifically, during warm-up, the blower 2 causes blower air to flow from the suction passage 1 to the storage case 5 during warm-up based on the control of the ECU 10. The rotation direction (propeller) of the blower 2 at this time is hereinafter referred to as “forward rotation”. At this time, the flow direction of the blower wind is a direction from the suction passage 1 to the exhaust passage 6. When the blower wind is generated, the end portion 21x of the curved plate 21 receives the blower wind force with the plate 21 lying down. As a result, the plate 21 rotates around the end portion 21y fixed to the storage plate 5 and is in an upright state as shown in FIG.

  And the battery temperature control apparatus 100 will be in the state shown to Fig.7 (a) because the plate 21 will be in a standing state. More specifically, the plate 21 and the storage case 5 form a first passage opening and a second passage opening. Furthermore, when the plate 21 stands up, the current plates 30a, 30c, 30e, and 30g and the plate 21 are in contact with each other. Thereby, the rectifying plate 30 can supply the blower air that has passed through the flow paths at both ends to the flow path at the center. Therefore, as in the fourth embodiment, the battery temperature adjusting device 100 can warm up the battery cells at the center while preferentially warming up the battery cells at both ends when warming up.

  The rectifying plates 30a, 30c, 30e, and 30g may have a function as a stopper that limits the position of the plate 21 in addition to the function of adjusting the flow of the blower air. That is, in this case, the plate 21 is rotated so as not to fall toward the battery 3 by the rectifying plates 30a, 30c, 30e, and 30g instead of the stopper 25 shown in FIGS. 5 (b) and 5 (c). Limited.

  On the other hand, during cooling, the blower 2 is controlled by the ECU 10 so that the propeller rotates in the opposite direction to the normal rotation (hereinafter referred to as “reverse rotation”). That is, the blower 2 rotates in the reverse direction so that the wind direction from the storage case 5 to the suction passage 1 is generated. As a result, the flow direction of the blower air during cooling is opposite to the flow direction of the blower air during warm-up. As a result, the plate 21 receives wind pressure in the direction toward the suction passage 1. Accordingly, the plate 21 changes from the standing state shown in FIG. 5C to the lying state shown in FIG.

  And when the plate 21 lies in the storage case 5, the battery temperature adjusting device 100 is in the state shown in FIG. As a result, the blower wind from the exhaust passage 6 toward the suction passage 1 flows through the central flow path including the flow paths 9h and 9l. The blower air sent from the exhaust passage 6 is, for example, cabin air cooled by an air conditioner. Therefore, at the time of cooling, the battery temperature adjusting device 100 can blow the blower air to the flow path in the central portion by rotating the blower 2 in the reverse direction to that during warm-up and changing the flow direction of the blower air. That is, the battery temperature adjusting device 100 can intensively cool the battery cell in the central portion that is particularly at a high temperature.

  As described above, the battery temperature control apparatus 100 according to the fifth embodiment is provided with the wind-type plate 21 and changes the flow direction of the blower air between the warm-up time and the cooling time. In particular, the battery cells at both ends at a low temperature can be preferentially warmed up, and the battery cell at the center at a particularly high temperature can be cooled during cooling. Accordingly, the battery temperature adjusting device 100 can efficiently warm up and cool the battery cell according to the situation.

  The plate 21 is not limited to the wind type but may be an electric type. In this case, the ECU 10 transmits a control signal to the drive mechanism of the plate 21 so that the plate 21 stands up during warm-up, and transmits a control signal to the drive mechanism of the plate 21 so that the plate 21 lies during cooling. In addition, instead of rotating the blower 2 reversely during cooling, the battery temperature adjusting device 100 may be provided with a separate blower in the exhaust passage 6 and driven based on the control of the ECU 10 during cooling. Also by this, the battery temperature control apparatus 100 can change the flow direction of the blower air between cooling and warming up.

It is a figure which shows schematic structure of a battery temperature control apparatus. It is an example of the top view in the storage case of the battery temperature control apparatus which concerns on 1st Embodiment. It is a graph which shows the relationship between the array number of a battery cell, and the cell temperature corresponding to it. It is an example of the upper side figure and side view in the storage case of the battery temperature control apparatus which concerns on 2nd Embodiment. It is an example of the upper side figure and side view in the storage case of the battery temperature control apparatus which concerns on 3rd Embodiment. It is an example of the top view in the storage case of the battery temperature control apparatus which concerns on 4th Embodiment. It is an example of the top view in the storage case of the battery temperature control apparatus which concerns on 5th Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Intake passage 2 Blower 3 Battery cell 4 Battery temperature sensor 5 Storage case 6 Exhaust passage 9 Flow path 20, 21 Plate 30 Current plate

Claims (3)

A storage case into which the temperature control medium flows, and
A plurality of battery cells arranged in the storage case and arranged at predetermined intervals in an arrangement direction opposite to the flow direction of the temperature control medium;
A plurality of flow paths formed adjacent to the plurality of battery cells in the storage case;
A temperature adjusting medium inflow section for supplying the temperature adjusting medium flowing into the storage case to a flow path adjacent to the battery cells at both ends in the arrangement direction among the plurality of flow paths. Battery temperature control device. One or more rectifying plates for adjusting the flow of the temperature control medium,
2. The battery temperature control according to claim 1, wherein the rectifying plate supplies the temperature control medium that has passed through the flow path adjacent to the battery cell at both ends to the flow path adjacent to the battery cell at the center when warming up. apparatus.   When warming up, flow the temperature control medium preferentially through the flow path adjacent to the battery cells at both ends over the flow path adjacent to the battery cells at the center, and during cooling, the flow paths adjacent to the battery cells at both ends. 3. The battery temperature adjusting device according to claim 1, further comprising a control unit that causes the temperature adjusting medium to flow preferentially through the flow path adjacent to the battery cell in the center portion.

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