WO2013011958A1 - Battery module - Google Patents

Battery module Download PDF

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Publication number
WO2013011958A1
WO2013011958A1 PCT/JP2012/067975 JP2012067975W WO2013011958A1 WO 2013011958 A1 WO2013011958 A1 WO 2013011958A1 JP 2012067975 W JP2012067975 W JP 2012067975W WO 2013011958 A1 WO2013011958 A1 WO 2013011958A1
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WO
WIPO (PCT)
Prior art keywords
temperature control
duct
control duct
battery
thermoelectric conversion
Prior art date
Application number
PCT/JP2012/067975
Other languages
French (fr)
Japanese (ja)
Inventor
和樹 前田
渡辺　慎太郎
Original Assignee
株式会社 豊田自動織機
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社 豊田自動織機 filed Critical 株式会社 豊田自動織機
Publication of WO2013011958A1 publication Critical patent/WO2013011958A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/657—Means for temperature control structurally associated with the cells by electric or electromagnetic means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present invention relates to a battery module, and more particularly to a battery module capable of adjusting the temperature of a plurality of batteries.
  • a temperature control device having a Peltier element and a current direction switching means has been proposed (see Patent Document 1).
  • the Peltier element is attached in close contact with the battery, and heat radiating fins are attached to the outside of the Peltier element.
  • the current direction switching means causes a current to flow in a direction in which the side of the Peltier element in close contact with the battery absorbs heat when the battery needs to be cooled, and flows a current in a direction in which the side of the Peltier element in close contact with the battery generates heat when the battery needs to be heated.
  • batteries 42 are stored and supported in the battery storage portion 41, and Peltier element heat transfer plates 43 are attached to the bottom surfaces of the batteries 42.
  • a duct portion 44 for circulating cooling air is formed in the lower portion of the battery storage portion 41, and a cooling fan 45 is installed at the entrance thereof.
  • the Peltier element heat transfer plate 43 is attached so that the inner side is in close contact with the bottom of the battery 42, and the radiating fins 46 are attached to the outer side. Then, the temperature of the battery 42 is measured by temperature measuring means. When the battery temperature exceeds a proper temperature range, current flows in the direction in which the inside of the Peltier element heat transfer plate 43 absorbs heat. When the battery temperature does not reach the proper temperature range, the inside of the Peltier element heat transfer plate 43 The current direction switching means is controlled so that a current flows in the direction in which the heat is generated.
  • An object of the present invention is to provide a battery module capable of reducing the number of parts and saving space in a configuration in which a plurality of batteries are accommodated in a plurality of locations.
  • a battery module includes a plurality of first temperature control ducts, a plurality of batteries, a second temperature control duct, and a thermoelectric conversion element.
  • the temperature of each of the plurality of batteries is adjusted by a heat medium flowing through the plurality of first temperature control ducts.
  • the second temperature control duct is provided adjacent to the plurality of first temperature control ducts and sandwiched between the two battery ducts.
  • the thermoelectric conversion element is provided at a boundary portion between each of the first temperature control ducts and the second temperature control duct, and the temperature is adjusted by the second temperature control duct.
  • the thermoelectric conversion element has a first surface that performs one of heat dissipation and heat absorption and a second surface that performs the other according to the polarity of energization.
  • the thermoelectric conversion element is provided such that the first surface corresponds to the first temperature control duct and the second surface corresponds to the second temperature control duct.
  • heat medium means a fluid that transfers heat.
  • the duct corresponds to the surface means a state where the surface is in contact with the boundary wall of the duct or a state where the surface is located in the duct.
  • the battery module of the present invention is used in a state where the thermoelectric conversion element is connected to a DC power source.
  • the thermoelectric conversion element is used connected to a DC power source so that the first surface is on the heat absorption side, and the heat medium flowing through the first temperature control duct is cooled.
  • the battery is cooled.
  • the direction of the direct current supplied to the thermoelectric conversion element is switched according to the environment. Thereby, the 1st surface of a thermoelectric conversion element is switched to a heat absorption state or a heat dissipation (heat generation) state.
  • the heat medium flowing through the first temperature control duct is cooled to cool the battery.
  • the heat medium flowing through the first temperature control duct is heated to heat the battery.
  • the second surface When the first surface of the thermoelectric conversion element is in a heat radiating state, the second surface is cooled to efficiently dissipate heat on the first surface.
  • heat absorption on the first surface is efficiently performed by promoting heat dissipation of the second surface.
  • Cooling and heat dissipation of the second surface of the thermoelectric conversion element are performed by flowing a heat medium through the second temperature control duct.
  • the second temperature control duct is provided adjacent to the first temperature control duct and sandwiched between the two first temperature control ducts. Therefore, one second temperature control duct is shared by two first temperature control ducts. Therefore, it is possible to reduce the number of parts and save space in a configuration in which a plurality of batteries are accommodated in a plurality of locations.
  • each of the plurality of batteries is accommodated in the corresponding first temperature control duct.
  • the entire battery is cooled or heated via a heat medium rather than cooling or heating the battery only from the surface where the thermoelectric conversion element is attached as in Patent Document 1.
  • the battery is almost entirely in contact with the heat medium, and the temperature can be adjusted efficiently.
  • the battery module further includes a communication duct.
  • the communication duct connects the plurality of first temperature control ducts so that the heat medium circulates through the plurality of first temperature control ducts.
  • the communication duct is provided with a heat medium driving unit.
  • the heat medium used for cooling or heating the battery in the first temperature control duct may be used in a circulating manner or discarded. When it is discarded, it is necessary to introduce the outside air of the use environment as a new heat medium into the first temperature control duct, and the battery temperature is easily affected by the outside air temperature. In addition, a waste duct that leads to a place where there is no problem even if the heat medium is discarded is required. In this invention, since the heat medium is circulated and used, the temperature of the battery is hardly affected by the outside air temperature, and the duct for introducing the outside air and the duct for discarding the heat medium are not necessary.
  • thermoelectric conversion element is a Peltier element.
  • Peltier elements are generally used as thermoelectric conversion elements, and it is easy to obtain thermoelectric conversion elements with desired performance.
  • FIG. 1A is a schematic plan view of a battery module according to an embodiment of the present invention in which a lid is omitted
  • FIG. 1B is a cross-sectional view taken along line 2B-2B in FIG. 2A
  • FIG. 1A is a cross-sectional view taken along line 2C-2C (with a lid)
  • FIG. 1D is an arrow view in the direction D of FIG. 1A (with a lid).
  • the schematic plan view corresponding to Drawing 1 (a) of another embodiment The schematic plan view corresponding to Drawing 1 (a) of another embodiment.
  • the schematic plan view corresponding to Drawing 1 (a) of another embodiment The schematic plan view corresponding to Drawing 1 (a) of another embodiment.
  • the schematic plan view corresponding to Drawing 1 (a) of another embodiment (A), (b) is a schematic cross section corresponding to Drawing 2 (a) of another embodiment, respectively.
  • the battery module 10 includes a battery temperature adjustment duct (battery housing) as a plurality of (two in this embodiment) first temperature adjustment ducts provided in parallel to each other.
  • Duct) 11 and a thermoelectric conversion element temperature adjustment duct 12 as a second temperature adjustment duct.
  • the second temperature control duct 12 is provided adjacent to the first temperature control duct 11 and sandwiched between the two first temperature control ducts 11.
  • a plurality of secondary batteries 13 as batteries are accommodated in each first temperature control duct 11.
  • a square battery is used as the secondary battery 13.
  • the secondary battery 13 is arranged so that the thickness direction thereof is parallel to the longitudinal direction of the second temperature control duct 12 (vertical direction in FIG. 1A).
  • the first temperature control duct 11 includes a main body 11a formed in a substantially U shape, and a lid portion 11b (see FIG. 2) covering the open side of the main body 11a. As shown).
  • the 2nd temperature control duct 12 is provided in the center part of the main body 11a, and the 2nd temperature control duct 12 is formed in the cylinder shape of a cross-sectional rectangle.
  • a partition wall 14 as a boundary portion between each first temperature control duct 11 and second temperature control duct 12 is one side wall of each first temperature control duct (battery temperature control duct) 11 and second temperature control duct 12. Is forming.
  • the lid portion 11b is fixed to the main body 11a in a state where a plurality of secondary batteries 13 are supported in parallel at a predetermined interval.
  • the lid portion 11 b is shared by the two first temperature control ducts 11.
  • the lid portion 11b is in contact with the upper surface of the second temperature control duct 12, and is fixed to the main body 11a with screws (not shown).
  • a plurality of end portions of the secondary battery 13 (upper end portions in FIGS. 2 (a) and 2 (b)) are sandwiched between the back surface (inner surface) of the lid portion 11b.
  • the convex portions 11 c are formed in parallel at intervals of the thickness of the secondary battery 13. For this reason, the secondary batteries 13 are arranged in a state in which a predetermined interval (approximately the thickness of the convex portion 11c) is provided.
  • the main body 11a, the lid 11b, and the second temperature control duct 12 of the first temperature control duct 11 are integrally formed of a heat insulating material, for example, a resin.
  • thermoelectric conversion elements 15 are provided on the partition wall 14 which is a boundary portion between the first temperature control duct 11 and the second temperature control duct 12.
  • the thermoelectric conversion element 15 has a first surface 15a and a second surface 15b that perform opposite actions of heat dissipation (heat generation) and heat absorption according to the polarity of energization.
  • the first surface 15 a is provided so as to correspond to the first temperature control duct 11, and the second surface 15 b is provided so as to correspond to the second temperature control duct 12.
  • the thermoelectric conversion element 15 has the first temperature adjustment so that the first surface 15a is located in the first temperature adjustment duct 11 and the second surface 15b is located in the second temperature adjustment duct 12.
  • Fins 16 are attached to the first surface 15a and the second surface 15b. The fins 16 are formed in a size that does not contact the secondary battery 13.
  • the Peltier element includes, for example, a plurality of P-type semiconductors and a plurality of N-type semiconductors that are electrically connected in series with each other and are arranged in parallel thermally.
  • the plurality of P-type semiconductors and the plurality of N-type semiconductors are disposed between electrically insulating heat transfer plates made of ceramics and sealed with a resin sealing material or the like. As a result, the Peltier elements are integrated.
  • the plurality of first temperature control ducts 11 are provided through a communication duct 17 so that a heat medium can be circulated.
  • a gas for example, air
  • Two communication ducts 17 are provided, and one communication duct 17 is provided with a fan driven by a motor (not shown) as the heat medium driving unit 18.
  • the communication duct 17 is also formed integrally with the main body 11a of the first temperature control duct 11 with resin.
  • both ends of the second temperature control duct 12 are bent in order to avoid interference between the second temperature control duct 12 and the communication duct 17.
  • the second temperature control duct 12 is such that the cross-sectional area of both ends of the second temperature control duct 12 is smaller than the cross-sectional area of the portion where the second temperature control duct 12 and the first temperature control duct 11 are adjacent to each other. Is formed.
  • the first surface 15a is at the first temperature in a state where the thermoelectric conversion element 15 penetrates the hole formed in the partition wall 14 between the first temperature control duct 11 and the second temperature control duct 12.
  • the thermoelectric conversion element 15 is fixed to the partition wall 14 using an adhesive so that the second surface 15b is positioned on the second temperature control duct 12 side while being positioned on the adjustment duct 11 side.
  • the lid portion 11b for fixing the secondary battery 13 at a predetermined interval is fixed to the main body 11a so as to cover the opening of the main body 11a.
  • thermoelectric conversion element 15 of the battery module 10 is connected to a DC power source via a wiring and a changeover switch (not shown). Further, as shown by a two-dot chain line in FIG. 1A, an outside air introduction duct 19a for introducing outside air as a heat medium is connected to one end side of the second temperature adjusting duct 12, and a second temperature adjusting duct is connected to the other end side.
  • the battery module 10 is used in a state in which a waste duct 19b that discards the heat medium that has passed through the duct 12 is connected.
  • the changeover switch and the heat medium driving unit 18 are controlled by a control device.
  • the control device determines whether the first temperature control duct 11 should be heated or cooled based on a detection signal from a sensor (not shown) that detects the temperature in the first temperature control duct 11 and controls the changeover switch. . Moreover, the battery module 10 supplies electric power to the electrical equipment which should supply the electric power which is not shown in figure via wiring.
  • the changeover switch is thermoelectrically converted so that the first surface 15a is on the heat absorption side, except when the environmental temperature is low enough to hinder the driving of the secondary battery 13, such as in cold regions and in winter.
  • the element 15 is switched to a state where it is connected to a DC power source.
  • the changeover switch has the first surface 15a. Is switched to a state in which the thermoelectric conversion element 15 is connected to the DC power source so that is on the heat radiation side (heat generation side).
  • the heat medium flowing through the first temperature control duct 11 is cooled, and the secondary battery 13 in the first temperature control duct 11 is cooled. If the 1st surface 15a will be in the heat dissipation state, the heat medium which flows through the 1st temperature control duct 11 will be heated, and the secondary battery 13 in the 1st temperature control duct 11 will be heated.
  • thermoelectric conversion element 15 When the first surface 15a of the thermoelectric conversion element is in an endothermic state, heat absorption on the first surface 15a is efficiently performed by promoting heat dissipation of the second surface 15b. When the first surface 15a of the thermoelectric conversion element 15 is in a heat dissipation state, the second surface 15b is cooled, so that the heat dissipation on the first surface 15a is performed efficiently. Heat dissipation and cooling of the second surface 15 b of the thermoelectric conversion element 15 are performed by flowing a heat medium through the second temperature control duct 12. Since new outside air is introduced into the second temperature control duct 12, the second surface 15 b is efficiently radiated and cooled, and the temperature of the heat medium in the first temperature control duct 11 is changed to the secondary battery 13. It is adjusted to a temperature suitable for discharging and charging.
  • first temperature control ducts 11 When a plurality of first temperature control ducts 11 are provided, providing the second temperature control duct 12 for each first temperature control duct 11 increases the number of second temperature control ducts 12, and It takes up more space. In this case, the space required for installing the battery module 10 is increased and the number of parts constituting the battery module 10 is increased.
  • the second temperature control duct 12 is provided adjacent to the first temperature control duct 11 and sandwiched between the two first temperature control ducts 11. Therefore, one second temperature control duct 12 is shared by two first temperature control ducts 11. Therefore, space saving can be achieved.
  • the heat medium used for cooling or heating the secondary battery 13 is discarded, it is necessary to introduce outside air in the use environment into the first temperature control duct 11 as a new heat medium.
  • the temperature of the secondary battery 13 is easily affected by the outside air temperature.
  • a duct for introducing outside air and a duct for disposal leading to a place where there is no problem even if the heat medium is discarded are necessary.
  • the temperature of the secondary battery 13 is not easily affected by the outside air temperature, and the outside air introduction duct. And no waste duct.
  • the battery module 10 is adjacent to a plurality of first temperature control ducts 11 as battery ducts, a secondary battery 13 accommodated in the first temperature control duct 11, and the first temperature control duct 11. And a second temperature control duct 12 provided between the two first temperature control ducts 11.
  • a thermoelectric conversion element having a first surface 15a and a second surface 15b acting on the partition wall 14 of the first temperature control duct 11 and the second temperature control duct 12 in opposite directions of heat dissipation and heat absorption according to the polarity of energization. 15 is provided.
  • the first surface 15 a corresponds to the first temperature control duct 11, and the second surface 15 b corresponds to the second temperature control duct 12. Therefore, it is possible to reduce the number of parts and save space in a configuration in which a plurality of secondary batteries 13 are accommodated in a plurality of locations.
  • the secondary battery 13 is accommodated in a first temperature control duct 11 as a battery duct. If a part of each secondary battery faces the battery duct, the temperature is adjusted by the heat medium flowing through the battery duct. In this embodiment, the secondary battery 13 is substantially in contact with the heat medium. Therefore, temperature adjustment can be performed more efficiently than a configuration in which a part of the secondary battery faces the battery duct.
  • a plurality of first temperature control ducts 11 are provided so that the heat medium can be circulated through the communication duct 17.
  • a heat medium driving unit 18 is provided in the communication duct 17. Therefore, the temperature of the secondary battery 13 is hardly affected by the outside air temperature, and the outside air introduction duct and the disposal duct are not necessary.
  • Peltier elements are used as thermoelectric conversion elements. Peltier elements are generally used as thermoelectric conversion elements. Therefore, a thermoelectric conversion element with desired performance can be easily obtained.
  • the first temperature control duct 11, the second temperature control duct 12, and the communication duct 17 are formed of a heat-insulating material, for example, a resin. Therefore, the heat medium cooled by the thermoelectric conversion element 15 is heated by external heat or the heat of the heat medium heated by the thermoelectric conversion element 15 as compared with the case where they are formed of a metal material having low heat insulating properties. Escapes to the outside through the wall of the duct. Therefore, the secondary battery 13 is efficiently cooled or heated.
  • the first temperature control duct 11 includes a main body 11a and a lid portion 11b.
  • the secondary battery 13 is accommodated in the first temperature control duct 11 in a state of being supported by the convex portion 11c formed on the lid portion 11b. Therefore, the assembling work for accommodating the secondary battery 13 in the first temperature control duct 11 at a predetermined interval is facilitated.
  • the embodiment is not limited to the above, and may be embodied as follows, for example.
  • the first temperature control duct 11 is not limited to two and may be three or more. For example, when there are three first temperature control ducts 11, there are two second temperature control ducts 12 as shown in FIG. Also, when there are four first temperature control ducts 11, there are two second temperature control ducts 12.
  • the heat medium flowing through the first temperature control duct 11 may be discarded without being circulated. In this case, the communication duct 17 becomes unnecessary. Further, it is not necessary to bend both ends of the second temperature control duct 12 in order to avoid interference between the second temperature control duct 12 and the communication duct 17.
  • an outside air introduction duct 20 a that introduces outside air as a heat medium is connected to one end side of each first temperature control duct 11.
  • a waste duct 20 b that discards the heat medium that has passed through the first temperature control duct 11 is connected to one end side of each first temperature control duct 11.
  • the heat medium flowing through the second temperature control duct 12 may be used in a circulating manner.
  • the second temperature control duct 12 is formed so as to form a closed loop, and the heat medium driving unit 21 and the radiator 22 are disposed at a location not adjacent to the first temperature control duct 11 of the second temperature control duct 12. Is provided.
  • thermoelectric conversion element 15 only needs to be provided at the boundary portion (partition wall 14) between the first temperature control duct 11 and the second temperature control duct 12, and faces the secondary battery 13 of each first temperature control duct 11. It is not restricted to the structure provided only in a location.
  • the battery module 10 is arranged such that a part of the plurality of secondary batteries 13 does not face the thermoelectric conversion element 15 and a part of the thermoelectric conversion element 15 does not face the secondary battery 13. It may be configured.
  • the thermoelectric conversion element 15 may be provided at a location not facing the secondary battery 13.
  • thermoelectric conversion element 15 may be provided only in a portion of the first temperature control duct 11 that does not face the secondary battery 13.
  • thermoelectric conversion elements 15 provided in each first temperature control duct 11 may be one, not a plurality.
  • the heat medium is not limited to air but may be other gas or liquid.
  • a liquid as a heat medium flowing through the first temperature control duct 11
  • it is necessary to use a non-conductive liquid in order to prevent the terminals of the secondary battery 13 and the wirings from being short-circuited. .
  • thermoelectric conversion element 15 cools the heat medium of the first temperature control duct 11
  • a liquid having a low boiling point may be used as the heat medium flowing through the second temperature control duct 12. Good.
  • the second surface 15b can be cooled by the phase change of the heat medium, that is, the latent heat generated when the liquid in contact with the second surface 15b is vaporized.
  • the heat medium When a liquid is used as the heat medium, since the liquid has a higher heat transfer coefficient than the gas, the heat medium can be efficiently cooled and heated by the thermoelectric conversion element 15 even if the fins 16 are omitted. Therefore, the number of parts can be reduced by omitting the fins 16.
  • thermoelectric conversion element 15 When the fin 16 is omitted, the thermoelectric conversion element 15 is fixed to the partition wall 14 so that either the first surface 15 a or the second surface 15 b is in close contact with the partition wall 14.
  • the part to which the thermoelectric conversion element 15 is attached in the partition 14 may be an insert-molded metal plate.
  • the arrangement of the secondary battery 13 in the first temperature control duct 11 is not limited to a state in which the thickness direction extends in parallel with the longitudinal direction of the second temperature control duct 12.
  • the secondary battery 13 may be arranged so that one surface in the thickness direction of the secondary battery 13 faces the lid portion 11 b of the first temperature control duct 11. Further, the secondary battery 13 may be arranged so that one surface in the thickness direction of the secondary battery 13 faces the second temperature control duct 12.
  • the battery module 10 is not limited to the configuration in which the secondary battery 13 is accommodated in the battery duct, but may be configured such that a part of the secondary battery 13 faces the first temperature control duct (battery accommodation duct 11).
  • the battery duct has a partition wall 14, a bottom wall extending from the partition wall 14 toward the secondary battery 13 and close to the secondary battery 13, and a part of the lid portion 11b. You may comprise.
  • the position of the communication duct 17 is also changed.
  • the battery module 10 may have a configuration in which the entire secondary battery 13 is provided outside the battery duct.
  • a part of the secondary battery 13 is formed on the outer surface of the wall opposite to the wall on which the second temperature control duct 12 is provided. You may touch.
  • the part where the secondary battery 13 contacts in the battery duct is made of a material having high thermal conductivity, for example, metal.
  • the first temperature control duct 11 of the battery module 10 is parallel to the partition wall 14, a part of the lid portion 11b, and the lid portion 11b from the partition wall 14 toward the secondary battery 13 side.
  • the bottom wall may extend in a U-shaped cross section. Also in this case, the position of the communication duct 17 is changed.
  • the battery module 10 may have a configuration in which a part of the secondary battery 13 is accommodated in a battery duct, or a configuration in which an opening is formed in a side wall or a bottom wall of the battery duct.
  • the battery module 10 has a configuration in which all the secondary batteries 13 accommodated in the first temperature control duct 11 are connected in parallel and connected to a common plus terminal and a minus terminal, and all the secondary batteries 13 are connected in series. Either a connected configuration or a configuration in which a plurality of sets of secondary batteries 13 connected in series are connected in parallel may be used.
  • the shape of the first temperature control duct 11, the second temperature control duct 12, and the communication duct 17 is not limited to a rectangular cross section.
  • the secondary battery 13 is not limited to a square battery, but may be a cylindrical battery or a laminate battery.
  • the battery is not limited to the secondary battery 13 and may be a fuel cell.
  • the first temperature control duct 11 (battery temperature control duct) and the second temperature control duct 12 (thermoelectric conversion element temperature control duct) are not limited to a single structure.
  • the first temperature control duct 11 (battery temperature control duct) and the second temperature control duct 12 (thermoelectric conversion element temperature control duct) are formed separately, the first temperature control duct 11 (battery temperature control duct) is formed.
  • the first temperature control duct 11 and the second temperature control duct 12 may be bonded or fixed so as to sandwich the second temperature control duct 12 (thermoelectric conversion element temperature control duct).
  • the lid 11b may be fixed with an adhesive.
  • the lid portion 11b is fixed with a screw, it becomes easy to remove the lid portion 11b and perform maintenance and inspection of the secondary battery 13.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Secondary Cells (AREA)
  • Battery Mounting, Suspending (AREA)
  • Fuel Cell (AREA)

Abstract

A battery module comprises a plurality of first temperature adjustment ducts, a plurality of batteries, a second temperature adjustment duct, and a thermoelectric conversion element. The plurality of batteries are respectively temperature adjusted by a thermal medium which flows through the first temperature adjustment ducts. The second temperature adjustment duct is disposed to be adjacent to the plurality of first temperature adjustment ducts and to be sandwiched between two battery ducts. The thermoelectric conversion element is disposed on the boundary between each of the first temperature adjustment ducts and the second temperature adjustment duct and is temperature adjusted by the second temperature adjustment duct. The thermoelectric conversion element further comprises a first face which carries out either heat discharge or heat absorption and a second face which carries out the other thereof, according to the electricity supply polarity. The thermoelectric conversion element is disposed such that the first face corresponds to the first temperature adjustment ducts and that the second face corresponds to the second temperature adjustment duct.

Description

電池モジュールBattery module
　本発明は、電池モジュールに係り、詳しくは複数の電池の温度調整が可能な電池モジュールに関する。 The present invention relates to a battery module, and more particularly to a battery module capable of adjusting the temperature of a plurality of batteries.
　近年、二次電池の大電流での充電及び放電や二次電池の大容量化が要求されるようになっている。しかし、大電流での充電及び放電は二次電池内部の大きな発熱を伴う。また限られたスペースに多数の二次電池を収容することから二次電池の温度が上昇し、二次電池の性能の劣化を促進してしまうという問題がある。また、二次電池によっては環境温度が低いと放電性能が低下する。そのため、冬季等の低温環境下においては、特に起動時に二次電池を暖める必要がある。 In recent years, charging and discharging of secondary batteries with a large current and increasing capacity of secondary batteries have been required. However, charging and discharging with a large current is accompanied by large heat generation inside the secondary battery. Further, since a large number of secondary batteries are accommodated in a limited space, there is a problem that the temperature of the secondary battery rises and the deterioration of the performance of the secondary battery is promoted. In addition, depending on the secondary battery, the discharge performance deteriorates when the environmental temperature is low. Therefore, in a low temperature environment such as winter, it is necessary to warm the secondary battery particularly at the time of startup.
　従来、ペルチェ素子及び電流方向切替手段を有する温度調節装置が提案されている（特許文献１参照）。前記ペルチェ素子はバッテリに密着して取り付けられ、ペルチェ素子の外側には放熱フィンが取り付けられる。前記電流方向切替手段は、バッテリの冷却必要時にペルチェ素子のバッテリに密着する側が吸熱する方向に電流を流し、バッテリの加熱必要時にペルチェ素子のバッテリに密着する側が発熱する方向に電流を流す。具体的には、図８に示すように、バッテリ収納部４１にバッテリ４２が収納、支持されており、各バッテリ４２の底面にペルチェ素子伝熱板４３が取り付けられている。バッテリ収納部４１の下部には冷却風の流通のためのダクト部４４が形成されており、その入口には冷却ファン４５が設置されている。ペルチェ素子伝熱板４３は内側がバッテリ４２の底部に密着するように取り付けられ、外側には放熱フィン４６が取り付けられている。そして、バッテリ４２の温度を温度測定手段で測定する。バッテリ温度が適正温度帯を超える高温状態時には、ペルチェ素子伝熱板４３の内側が吸熱する方向に電流を流し、バッテリ温度が適正温度帯に達しない低温状態時には、ペルチェ素子伝熱板４３の内側が発熱する方向に電流を流すように電流方向切替手段が制御される。 Conventionally, a temperature control device having a Peltier element and a current direction switching means has been proposed (see Patent Document 1). The Peltier element is attached in close contact with the battery, and heat radiating fins are attached to the outside of the Peltier element. The current direction switching means causes a current to flow in a direction in which the side of the Peltier element in close contact with the battery absorbs heat when the battery needs to be cooled, and flows a current in a direction in which the side of the Peltier element in close contact with the battery generates heat when the battery needs to be heated. Specifically, as shown in FIG. 8, batteries 42 are stored and supported in the battery storage portion 41, and Peltier element heat transfer plates 43 are attached to the bottom surfaces of the batteries 42. A duct portion 44 for circulating cooling air is formed in the lower portion of the battery storage portion 41, and a cooling fan 45 is installed at the entrance thereof. The Peltier element heat transfer plate 43 is attached so that the inner side is in close contact with the bottom of the battery 42, and the radiating fins 46 are attached to the outer side. Then, the temperature of the battery 42 is measured by temperature measuring means. When the battery temperature exceeds a proper temperature range, current flows in the direction in which the inside of the Peltier element heat transfer plate 43 absorbs heat. When the battery temperature does not reach the proper temperature range, the inside of the Peltier element heat transfer plate 43 The current direction switching means is controlled so that a current flows in the direction in which the heat is generated.
特開平８－１４８１８９号公報JP-A-8-148189
　レイアウトの関係で複数のバッテリを一箇所ではなく、複数箇所に分けて収容したい場合もある。この場合、収容箇所毎にそれぞれ冷却風の流通のためのダクト部を設ける必要があり、部品点数が増加するとともにペルチェ素子温調用ダクトが占めるスペースも大きくなる。特許文献１の温度調節装置はそのような場合に対する配慮がなされていない。 Due to the layout, there are cases where it is desired to accommodate multiple batteries in multiple locations instead of one location. In this case, it is necessary to provide a duct portion for circulation of cooling air for each accommodation location, and the number of parts increases and the space occupied by the Peltier element temperature adjustment duct also increases. The temperature control device of Patent Document 1 does not give consideration to such a case.
　本発明の目的は複数の電池をそれぞれ複数箇所に収容した構成において部品点数の削減及び省スペース化を図ることができる電池モジュールを提供することにある。 An object of the present invention is to provide a battery module capable of reducing the number of parts and saving space in a configuration in which a plurality of batteries are accommodated in a plurality of locations.
　上記目的を達成するため、本発明の一態様に係る電池モジュールは、複数の第１温調ダクトと、複数の電池と、第２温調ダクトと、熱電変換素子とを備える。前記複数の電池は前記複数の第１温調ダクトを流れる熱媒体によってそれぞれ温度調整される。前記第２温調ダクトは前記複数の第１温調ダクトに隣接するとともに二つの前記電池用ダクトに挟まれるように設けられる。前記熱電変換素子は、前記第１温調ダクトの各々と前記第２温調ダクトとの境界部に設けられ前記第２温調ダクトによって温度調整される。同熱電変換素子は通電の極性に応じて放熱及び吸熱のうちの一方を行う第１の面及び他方を行う第２の面を有する。前記熱電変換素子は前記第１の面が前記第１温調ダクトに対応するとともに前記第２の面が前記第２温調ダクトに対応するように設けられる。 In order to achieve the above object, a battery module according to an aspect of the present invention includes a plurality of first temperature control ducts, a plurality of batteries, a second temperature control duct, and a thermoelectric conversion element. The temperature of each of the plurality of batteries is adjusted by a heat medium flowing through the plurality of first temperature control ducts. The second temperature control duct is provided adjacent to the plurality of first temperature control ducts and sandwiched between the two battery ducts. The thermoelectric conversion element is provided at a boundary portion between each of the first temperature control ducts and the second temperature control duct, and the temperature is adjusted by the second temperature control duct. The thermoelectric conversion element has a first surface that performs one of heat dissipation and heat absorption and a second surface that performs the other according to the polarity of energization. The thermoelectric conversion element is provided such that the first surface corresponds to the first temperature control duct and the second surface corresponds to the second temperature control duct.
　ここで、「熱媒体」とは、熱の伝達を行う流体を意味する。また、「面にダクトが対応する」とは、面がダクトの境界部の壁に接触している状態や面がダクト内に位置している状態を意味する。 Here, “heat medium” means a fluid that transfers heat. In addition, “the duct corresponds to the surface” means a state where the surface is in contact with the boundary wall of the duct or a state where the surface is located in the duct.
　この発明の電池モジュールは、熱電変換素子が直流電源に接続された状態で使用される。使用環境が電池モジュールの加熱を必要としない場合は、熱電変換素子は第１の面が吸熱側となるように直流電源に接続されて使用され、第１温調ダクトを流れる熱媒体が冷却されて電池が冷却される。使用環境が電池モジュールの冷却を必要な状態と加熱を必要な状態とに変化する場合は、環境に対応して熱電変換素子に供給される直流の通電方向が切り換えられる。これにより、熱電変換素子の第１の面が吸熱状態あるいは放熱（発熱）状態に切り換えられる。第１の面が吸熱状態になると第１温調ダクトを流れる熱媒体が冷却されて電池が冷却される。第１の面が放熱状態になると第１温調ダクトを流れる熱媒体が加熱されて電池が加熱される。 The battery module of the present invention is used in a state where the thermoelectric conversion element is connected to a DC power source. When the usage environment does not require heating of the battery module, the thermoelectric conversion element is used connected to a DC power source so that the first surface is on the heat absorption side, and the heat medium flowing through the first temperature control duct is cooled. The battery is cooled. When the usage environment changes between a state where the battery module needs to be cooled and a state where the battery module needs to be heated, the direction of the direct current supplied to the thermoelectric conversion element is switched according to the environment. Thereby, the 1st surface of a thermoelectric conversion element is switched to a heat absorption state or a heat dissipation (heat generation) state. When the first surface is in an endothermic state, the heat medium flowing through the first temperature control duct is cooled to cool the battery. When the first surface is in a heat dissipation state, the heat medium flowing through the first temperature control duct is heated to heat the battery.
　熱電変換素子の第１の面が放熱状態のときは第２の面を冷却することにより第１の面での放熱が効率良く行われる。熱電変換素子の第１の面が吸熱状態のときは第２の面の放熱を促進させることにより第１の面での吸熱が効率良く行われる。熱電変換素子の第２の面の冷却及び放熱は、第２温調ダクトに熱媒体を流すことで行われる。複数の第１温調ダクトが設けられている場合、第１温調ダクト毎に第２温調ダクトを設けると、第２温調ダクトの数が増え、第２温調ダクトの占めるスペースが大きくなる。この場合、電池モジュールの設置に必要なスペースが大きくなるとともに電池モジュールを構成する部品点数が多くなる。しかし、この発明では、第２温調ダクトは第１温調ダクトに隣接するとともに二つの第１温調ダクトに挟まれるように設けられている。そのため、一つの第２温調ダクトが二つの第１温調ダクトに共用される。したがって、複数の電池を複数箇所に収容した構成において部品点数の削減及び省スペース化を図ることができる。 When the first surface of the thermoelectric conversion element is in a heat radiating state, the second surface is cooled to efficiently dissipate heat on the first surface. When the first surface of the thermoelectric conversion element is in an endothermic state, heat absorption on the first surface is efficiently performed by promoting heat dissipation of the second surface. Cooling and heat dissipation of the second surface of the thermoelectric conversion element are performed by flowing a heat medium through the second temperature control duct. When a plurality of first temperature control ducts are provided, if a second temperature control duct is provided for each first temperature control duct, the number of second temperature control ducts increases, and the space occupied by the second temperature control duct increases. Become. In this case, the space required for installation of the battery module increases and the number of parts constituting the battery module increases. However, in the present invention, the second temperature control duct is provided adjacent to the first temperature control duct and sandwiched between the two first temperature control ducts. Therefore, one second temperature control duct is shared by two first temperature control ducts. Therefore, it is possible to reduce the number of parts and save space in a configuration in which a plurality of batteries are accommodated in a plurality of locations.
　好ましくは、前記複数の電池の各々は対応する前記第１温調ダクトに収容されている。 Preferably, each of the plurality of batteries is accommodated in the corresponding first temperature control duct.
　電池を冷却あるいは加熱する場合、特許文献１のように熱電変換素子が取り付けられた面からのみ電池を冷却あるいは加熱するより、電池全体が熱媒体を介して冷却あるいは加熱される方が好ましい。この発明では、電池は、ほぼ全体が熱媒体と接する状態となり、温度調整を効率良く行うことができる。 When cooling or heating the battery, it is preferable that the entire battery is cooled or heated via a heat medium rather than cooling or heating the battery only from the surface where the thermoelectric conversion element is attached as in Patent Document 1. In the present invention, the battery is almost entirely in contact with the heat medium, and the temperature can be adjusted efficiently.
　好ましくは、前記電池モジュールは連通ダクトをさらに備える。同連通ダクトは前記熱媒体が前記複数の第１温調ダクトを循環するように前記複数の第１温調ダクト同士を接続する。前記連通ダクトには熱媒体駆動部が設けられている。 Preferably, the battery module further includes a communication duct. The communication duct connects the plurality of first temperature control ducts so that the heat medium circulates through the plurality of first temperature control ducts. The communication duct is provided with a heat medium driving unit.
　第１温調ダクトで電池の冷却あるいは加熱に使用された熱媒体は、循環使用される場合と、廃棄される場合とがある。廃棄される場合は新たな熱媒体として使用環境の外気を第１温調ダクトに導入する必要があり、電池の温度が外気温度の影響を受け易い。また、熱媒体を廃棄しても支障のない箇所まで導く廃棄用のダクトが必要になる。この発明では、熱媒体は循環使用されるため、電池の温度が外気温度の影響を受け難く、外気導入用のダクトや熱媒体廃棄用のダクトが不要になる。 The heat medium used for cooling or heating the battery in the first temperature control duct may be used in a circulating manner or discarded. When it is discarded, it is necessary to introduce the outside air of the use environment as a new heat medium into the first temperature control duct, and the battery temperature is easily affected by the outside air temperature. In addition, a waste duct that leads to a place where there is no problem even if the heat medium is discarded is required. In this invention, since the heat medium is circulated and used, the temperature of the battery is hardly affected by the outside air temperature, and the duct for introducing the outside air and the duct for discarding the heat medium are not necessary.
　好ましくは、前記熱電変換素子はペルチェ素子である。 Preferably, the thermoelectric conversion element is a Peltier element.
　ペルチェ素子は熱電変換素子として一般に使用されており、所望の性能の熱電変換素子を入手し易い。 Peltier elements are generally used as thermoelectric conversion elements, and it is easy to obtain thermoelectric conversion elements with desired performance.
（ａ）は本発明の一実施形態に係る電池モジュールにおいて蓋体を省略した模式平面図、（ｂ）は蓋部、連通ダクト及び第２温調ダクトの端部等を省略した電池モジュールの模式斜視図。(A) is a schematic plan view of a battery module according to an embodiment of the present invention in which a lid is omitted, and (b) is a schematic of a battery module in which a lid, a communication duct, an end of a second temperature control duct, and the like are omitted. Perspective view. （ａ）は図１（ａ）の２Ａ－２Ａ線に沿った断面図（蓋部有り）、（ｂ）は図２（ａ）の２Ｂ－２Ｂ線に沿った断面図、（ｃ）は図１（ａ）の２Ｃ－２Ｃ線に沿った断面図（蓋部有り）、（ｄ）は図１（ａ）のＤ方向における矢視図（蓋部有り）。1A is a cross-sectional view taken along line 2A-2A in FIG. 1A (with a lid), FIG. 1B is a cross-sectional view taken along line 2B-2B in FIG. 2A, and FIG. 1A is a cross-sectional view taken along line 2C-2C (with a lid), and FIG. 1D is an arrow view in the direction D of FIG. 1A (with a lid). 別の実施形態の図１（ａ）に対応する模式平面図。The schematic plan view corresponding to Drawing 1 (a) of another embodiment. 別の実施形態の図１（ａ）に対応する模式平面図。The schematic plan view corresponding to Drawing 1 (a) of another embodiment. 別の実施形態の図１（ａ）に対応する模式平面図。The schematic plan view corresponding to Drawing 1 (a) of another embodiment. 別の実施形態の図１（ａ）に対応する模式平面図。The schematic plan view corresponding to Drawing 1 (a) of another embodiment. （ａ），（ｂ）はそれぞれ別の実施形態の図２（ａ）に対応する模式断面図。(A), (b) is a schematic cross section corresponding to Drawing 2 (a) of another embodiment, respectively. 従来技術の模式平面図。The schematic top view of a prior art.
　以下、本発明を具体化した一実施形態を図１及び図２にしたがって説明する。 Hereinafter, an embodiment embodying the present invention will be described with reference to FIGS. 1 and 2.
　図１（ａ），１（ｂ）に示すように、電池モジュール１０は、互いに並列に設けられた複数（この実施形態では二つ）の第１温調ダクトとしての電池温調用ダクト（電池収容ダクト）１１と、第２温調ダクトとしての熱電変換素子温調用ダクト１２とを備える。同第２温調ダクト１２は、第１温調ダクト１１に隣接するとともに二つの第１温調ダクト１１に挟まれるように設けられる。各第１温調ダクト１１内には電池としての二次電池１３が複数収容されている。二次電池１３として角型電池が使用されている。二次電池１３はその厚さ方向が第２温調ダクト１２の長手方向（図１（ａ）の上下方向）と平行になるように配置されている。 As shown in FIGS. 1 (a) and 1 (b), the battery module 10 includes a battery temperature adjustment duct (battery housing) as a plurality of (two in this embodiment) first temperature adjustment ducts provided in parallel to each other. Duct) 11 and a thermoelectric conversion element temperature adjustment duct 12 as a second temperature adjustment duct. The second temperature control duct 12 is provided adjacent to the first temperature control duct 11 and sandwiched between the two first temperature control ducts 11. A plurality of secondary batteries 13 as batteries are accommodated in each first temperature control duct 11. A square battery is used as the secondary battery 13. The secondary battery 13 is arranged so that the thickness direction thereof is parallel to the longitudinal direction of the second temperature control duct 12 (vertical direction in FIG. 1A).
　図１（ｂ）及び図２（ａ）に示すように、第１温調ダクト１１は、略Ｕ字状に形成された本体１１ａと、本体１１ａの開放側を覆う蓋部１１ｂ（図２に図示）とを有する。本体１１ａの中央部に第２温調ダクト１２が設けられており、第２温調ダクト１２は断面矩形の筒状に形成されている。各第１温調ダクト１１と第２温調ダクト１２との間の境界部としての隔壁１４は、各第１温調ダクト（電池温調用ダクト）１１及び第２温調ダクト１２の一方の側壁を形成している。蓋部１１ｂは、複数の二次電池１３を所定間隔で平行に支持した状態で本体１１ａに固定されている。この実施形態では蓋部１１ｂは二つの第１温調ダクト１１に共用される。蓋部１１ｂは第２温調ダクト１２の上面に当接する状態で、図示しないねじにより、本体１１ａに固定されている。 As shown in FIGS. 1 (b) and 2 (a), the first temperature control duct 11 includes a main body 11a formed in a substantially U shape, and a lid portion 11b (see FIG. 2) covering the open side of the main body 11a. As shown). The 2nd temperature control duct 12 is provided in the center part of the main body 11a, and the 2nd temperature control duct 12 is formed in the cylinder shape of a cross-sectional rectangle. A partition wall 14 as a boundary portion between each first temperature control duct 11 and second temperature control duct 12 is one side wall of each first temperature control duct (battery temperature control duct) 11 and second temperature control duct 12. Is forming. The lid portion 11b is fixed to the main body 11a in a state where a plurality of secondary batteries 13 are supported in parallel at a predetermined interval. In this embodiment, the lid portion 11 b is shared by the two first temperature control ducts 11. The lid portion 11b is in contact with the upper surface of the second temperature control duct 12, and is fixed to the main body 11a with screws (not shown).
　図２（ａ），２（ｂ）に示すように、蓋部１１ｂの裏面（内面）には二次電池１３の一端部（図２（ａ），（ｂ）では上端部）を挟持する複数の凸部１１ｃが、二次電池１３の厚さの間隔で平行に形成される。そのため、二次電池１３は、互いに所定の間隔（略凸部１１ｃの厚さ）を設けた状態で配置されている。第１温調ダクト１１の本体１１ａ、蓋部１１ｂ及び第２温調ダクト１２は断熱性を有する材質、例えば、樹脂で一体に形成されている。 As shown in FIGS. 2 (a) and 2 (b), a plurality of end portions of the secondary battery 13 (upper end portions in FIGS. 2 (a) and 2 (b)) are sandwiched between the back surface (inner surface) of the lid portion 11b. The convex portions 11 c are formed in parallel at intervals of the thickness of the secondary battery 13. For this reason, the secondary batteries 13 are arranged in a state in which a predetermined interval (approximately the thickness of the convex portion 11c) is provided. The main body 11a, the lid 11b, and the second temperature control duct 12 of the first temperature control duct 11 are integrally formed of a heat insulating material, for example, a resin.
　第１温調ダクト１１と第２温調ダクト１２との間の境界部である隔壁１４には複数の熱電変換素子１５が設けられている。熱電変換素子１５は、通電の極性に応じて放熱（発熱）と吸熱との相反する作用を行う第１の面１５ａ及び第２の面１５ｂを有する。第１の面１５ａが第１温調ダクト１１に対応し、第２の面１５ｂが第２温調ダクト１２に対応するように設けられている。この実施形態では、第１の面１５ａが第１温調ダクト１１内に位置し、第２の面１５ｂが第２温調ダクト１２内に位置するように、熱電変換素子１５は第１温調ダクト１１及び第２温調ダクト１２の隔壁１４を貫通している。熱電変換素子１５が隔壁１４を貫通する部分の気密性は保持されている。第１の面１５ａ及び第２の面１５ｂにはフィン１６が取り付けられている。フィン１６は二次電池１３に接触しない大きさに形成されている。 A plurality of thermoelectric conversion elements 15 are provided on the partition wall 14 which is a boundary portion between the first temperature control duct 11 and the second temperature control duct 12. The thermoelectric conversion element 15 has a first surface 15a and a second surface 15b that perform opposite actions of heat dissipation (heat generation) and heat absorption according to the polarity of energization. The first surface 15 a is provided so as to correspond to the first temperature control duct 11, and the second surface 15 b is provided so as to correspond to the second temperature control duct 12. In this embodiment, the thermoelectric conversion element 15 has the first temperature adjustment so that the first surface 15a is located in the first temperature adjustment duct 11 and the second surface 15b is located in the second temperature adjustment duct 12. It penetrates the partition wall 14 of the duct 11 and the second temperature control duct 12. The airtightness of the portion where the thermoelectric conversion element 15 penetrates the partition wall 14 is maintained. Fins 16 are attached to the first surface 15a and the second surface 15b. The fins 16 are formed in a size that does not contact the secondary battery 13.
　熱電変換素子１５としてはペルチェ素子が使用されている。ペルチェ素子は、例えば、互いに電気的に直列に接続され且つ熱的に並列に配置された複数のＰ型半導体と複数のＮ型半導体とを含む。複数のＰ型半導体と複数のＮ型半導体とはセラミックスよりなる電気的絶縁性の伝熱板の間に配設され、樹脂封止材などで封止される。これによりペルチェ素子は一体化されている。 As the thermoelectric conversion element 15, a Peltier element is used. The Peltier element includes, for example, a plurality of P-type semiconductors and a plurality of N-type semiconductors that are electrically connected in series with each other and are arranged in parallel thermally. The plurality of P-type semiconductors and the plurality of N-type semiconductors are disposed between electrically insulating heat transfer plates made of ceramics and sealed with a resin sealing material or the like. As a result, the Peltier elements are integrated.
　図１（ａ）に示すように、複数の第１温調ダクト１１は連通ダクト１７を介して熱媒体が循環可能に設けられている。熱媒体としては気体（例えば、空気）が使用されている。連通ダクト１７は２本設けられ、一方の連通ダクト１７には熱媒体駆動部１８として図示しないモータで駆動されるファンが設けられている。連通ダクト１７も樹脂で第１温調ダクト１１の本体１１ａと一体に形成されている。 As shown in FIG. 1A, the plurality of first temperature control ducts 11 are provided through a communication duct 17 so that a heat medium can be circulated. A gas (for example, air) is used as the heat medium. Two communication ducts 17 are provided, and one communication duct 17 is provided with a fan driven by a motor (not shown) as the heat medium driving unit 18. The communication duct 17 is also formed integrally with the main body 11a of the first temperature control duct 11 with resin.
　図２（ｃ），２（ｄ）に示すように、第２温調ダクト１２と連通ダクト１７との干渉を避けるため、第２温調ダクト１２の両端部は屈曲されている。第２温調ダクト１２は、同第２温調ダクト１２の両端部の断面積が、同第２温調ダクト１２と第１温調ダクト１１とが隣接する部分の断面積より小さくなるように形成されている。 2 (c) and 2 (d), both ends of the second temperature control duct 12 are bent in order to avoid interference between the second temperature control duct 12 and the communication duct 17. The second temperature control duct 12 is such that the cross-sectional area of both ends of the second temperature control duct 12 is smaller than the cross-sectional area of the portion where the second temperature control duct 12 and the first temperature control duct 11 are adjacent to each other. Is formed.
　前記のように構成された電池モジュール１０の組立、製造は、蓋部１１ｂが取り付けられる前の状態で行われる。具体的には、先ず第１温調ダクト１１と第２温調ダクト１２との間の隔壁１４に形成されている孔を熱電変換素子１５が貫通する状態で第１の面１５ａが第１温調ダクト１１側に位置するとともに第２の面１５ｂが第２温調ダクト１２側に位置するように、熱電変換素子１５を隔壁１４に接着剤を用いて固着する。次に、二次電池１３を所定間隔で固定する蓋部１１ｂを、本体１１ａの開口部を覆うように本体１１ａに固定する。 Assembling and manufacturing of the battery module 10 configured as described above are performed in a state before the lid portion 11b is attached. Specifically, first, the first surface 15a is at the first temperature in a state where the thermoelectric conversion element 15 penetrates the hole formed in the partition wall 14 between the first temperature control duct 11 and the second temperature control duct 12. The thermoelectric conversion element 15 is fixed to the partition wall 14 using an adhesive so that the second surface 15b is positioned on the second temperature control duct 12 side while being positioned on the adjustment duct 11 side. Next, the lid portion 11b for fixing the secondary battery 13 at a predetermined interval is fixed to the main body 11a so as to cover the opening of the main body 11a.
　次に前記のように構成された電池モジュール１０の作用を説明する。 Next, the operation of the battery module 10 configured as described above will be described.
　電池モジュール１０の熱電変換素子１５は図示しない配線及び切換えスイッチを介して直流電源に接続される。また、図１（ａ）に２点鎖線で示すように、第２温調ダクト１２の一端側に熱媒体としての外気を導入する外気導入ダクト１９ａが連結され、他端側に第２温調ダクト１２を通過した熱媒体を廃棄する廃棄ダクト１９ｂが連結された状態で電池モジュール１０は使用される。切換えスイッチ及び熱媒体駆動部１８は制御装置により制御される。なお、制御装置は第１温調ダクト１１内の温度を検出する図示しないセンサの検出信号に基づいて、第１温調ダクト１１内を加熱すべきか冷却すべきかを判断して切換えスイッチを制御する。また、電池モジュール１０は、図示しない電力を供給すべき電機機器に配線を介して電力を供給する。 The thermoelectric conversion element 15 of the battery module 10 is connected to a DC power source via a wiring and a changeover switch (not shown). Further, as shown by a two-dot chain line in FIG. 1A, an outside air introduction duct 19a for introducing outside air as a heat medium is connected to one end side of the second temperature adjusting duct 12, and a second temperature adjusting duct is connected to the other end side. The battery module 10 is used in a state in which a waste duct 19b that discards the heat medium that has passed through the duct 12 is connected. The changeover switch and the heat medium driving unit 18 are controlled by a control device. The control device determines whether the first temperature control duct 11 should be heated or cooled based on a detection signal from a sensor (not shown) that detects the temperature in the first temperature control duct 11 and controls the changeover switch. . Moreover, the battery module 10 supplies electric power to the electrical equipment which should supply the electric power which is not shown in figure via wiring.
　電池モジュール１０が使用される場合、急速充電時や急速放電時に二次電池１３の発熱が大きくなる。そのため、寒冷地や冬季の低温時等のように環境温度が二次電池１３の駆動に支障を来すほど低い場合を除き、切換えスイッチは第１の面１５ａが吸熱側となるように熱電変換素子１５が直流電源に接続される状態に切り換えられる。また、第１温調ダクト１１内の熱媒体の温度が二次電池１３の駆動に支障を来すほど低く、二次電池１３の加熱を必要とする場合は、切換えスイッチは第１の面１５ａが放熱側（発熱側）となるように熱電変換素子１５が直流電源に接続される状態に切り換えられる。 When the battery module 10 is used, the secondary battery 13 generates a large amount of heat during rapid charge or rapid discharge. Therefore, the changeover switch is thermoelectrically converted so that the first surface 15a is on the heat absorption side, except when the environmental temperature is low enough to hinder the driving of the secondary battery 13, such as in cold regions and in winter. The element 15 is switched to a state where it is connected to a DC power source. Further, when the temperature of the heat medium in the first temperature control duct 11 is so low as to hinder the driving of the secondary battery 13 and the secondary battery 13 needs to be heated, the changeover switch has the first surface 15a. Is switched to a state in which the thermoelectric conversion element 15 is connected to the DC power source so that is on the heat radiation side (heat generation side).
　第１の面１５ａが吸熱状態になると第１温調ダクト１１を流れる熱媒体が冷却されて第１温調ダクト１１内の二次電池１３が冷却される。第１の面１５ａが放熱状態になると第１温調ダクト１１を流れる熱媒体が加熱されて第１温調ダクト１１内の二次電池１３が加熱される。 When the first surface 15a is in an endothermic state, the heat medium flowing through the first temperature control duct 11 is cooled, and the secondary battery 13 in the first temperature control duct 11 is cooled. If the 1st surface 15a will be in the heat dissipation state, the heat medium which flows through the 1st temperature control duct 11 will be heated, and the secondary battery 13 in the 1st temperature control duct 11 will be heated.
　熱電変換素子の第１の面１５ａが吸熱状態のときは第２の面１５ｂの放熱を促進させることにより第１の面１５ａでの吸熱が効率良く行われる。熱電変換素子１５の第１の面１５ａが放熱状態のときは第２の面１５ｂを冷却することにより第１の面１５ａでの放熱が効率良く行われる。熱電変換素子１５の第２の面１５ｂの放熱及び冷却は、第２温調ダクト１２に熱媒体を流すことで行われる。第２温調ダクト１２には新たな外気が導入されるため、第２の面１５ｂの放熱及び冷却が効率良く行われ、第１温調ダクト１１内の熱媒体の温度が、二次電池１３の放電や充電に適した温度に調整される。 When the first surface 15a of the thermoelectric conversion element is in an endothermic state, heat absorption on the first surface 15a is efficiently performed by promoting heat dissipation of the second surface 15b. When the first surface 15a of the thermoelectric conversion element 15 is in a heat dissipation state, the second surface 15b is cooled, so that the heat dissipation on the first surface 15a is performed efficiently. Heat dissipation and cooling of the second surface 15 b of the thermoelectric conversion element 15 are performed by flowing a heat medium through the second temperature control duct 12. Since new outside air is introduced into the second temperature control duct 12, the second surface 15 b is efficiently radiated and cooled, and the temperature of the heat medium in the first temperature control duct 11 is changed to the secondary battery 13. It is adjusted to a temperature suitable for discharging and charging.
　第１温調ダクト１１が複数設けられている場合、第１温調ダクト１１毎に第２温調ダクト１２を設けると、第２温調ダクト１２の数が増え、第２温調ダクト１２の占めるスペースが大きくなる。この場合、電池モジュール１０の設置に必要なスペースが大きくなるとともに電池モジュール１０を構成する部品点数が多くなる。しかし、第２温調ダクト１２は第１温調ダクト１１に隣接して、かつ二つの第１温調ダクト１１に挟まれた状態で設けられる。そのため、一つの第２温調ダクト１２が二つの第１温調ダクト１１に共用されている。したがって、省スペース化を図ることができる。 When a plurality of first temperature control ducts 11 are provided, providing the second temperature control duct 12 for each first temperature control duct 11 increases the number of second temperature control ducts 12, and It takes up more space. In this case, the space required for installing the battery module 10 is increased and the number of parts constituting the battery module 10 is increased. However, the second temperature control duct 12 is provided adjacent to the first temperature control duct 11 and sandwiched between the two first temperature control ducts 11. Therefore, one second temperature control duct 12 is shared by two first temperature control ducts 11. Therefore, space saving can be achieved.
　二次電池１３の冷却あるいは加熱に使用された熱媒体を廃棄する構成では、新たな熱媒体として使用環境の外気を第１温調ダクト１１に導入する必要がある。外気が第１温調ダクト１１に導入されると、二次電池１３の温度が外気温度の影響を受け易くなる。また、外気導入用のダクトや熱媒体を廃棄しても支障のない箇所まで導く廃棄用のダクトが必要になる。この実施形態の電池モジュール１０は、二次電池１３の冷却あるいは加熱に使用された熱媒体は循環使用されるため、二次電池１３の温度が外気温度の影響を受け難く、外気導入用のダクトや廃棄用のダクトが不要になる。 In the configuration in which the heat medium used for cooling or heating the secondary battery 13 is discarded, it is necessary to introduce outside air in the use environment into the first temperature control duct 11 as a new heat medium. When the outside air is introduced into the first temperature control duct 11, the temperature of the secondary battery 13 is easily affected by the outside air temperature. In addition, a duct for introducing outside air and a duct for disposal leading to a place where there is no problem even if the heat medium is discarded are necessary. In the battery module 10 of this embodiment, since the heat medium used for cooling or heating the secondary battery 13 is circulated, the temperature of the secondary battery 13 is not easily affected by the outside air temperature, and the outside air introduction duct. And no waste duct.
　この実施形態によれば、以下に示す利点を得ることができる。 According to this embodiment, the following advantages can be obtained.
　（１）電池モジュール１０は、複数設けられた電池用ダクトとしての第１温調ダクト１１と、第１温調ダクト１１に収容された二次電池１３と、第１温調ダクト１１に隣接して、かつ二つの第１温調ダクト１１に挟まれた状態で設けられた第２温調ダクト１２とを備えている。第１温調ダクト１１と第２温調ダクト１２との隔壁１４に、通電の極性に応じて放熱と吸熱の相反する作用をする第１の面１５ａ及び第２の面１５ｂを有する熱電変換素子１５が設けられている。第１の面１５ａが第１温調ダクト１１に対応し、第２の面１５ｂが第２温調ダクト１２に対応する。したがって、複数の二次電池１３を複数箇所に収容した構成において部品点数の削減及び省スペース化を図ることができる。 (1) The battery module 10 is adjacent to a plurality of first temperature control ducts 11 as battery ducts, a secondary battery 13 accommodated in the first temperature control duct 11, and the first temperature control duct 11. And a second temperature control duct 12 provided between the two first temperature control ducts 11. A thermoelectric conversion element having a first surface 15a and a second surface 15b acting on the partition wall 14 of the first temperature control duct 11 and the second temperature control duct 12 in opposite directions of heat dissipation and heat absorption according to the polarity of energization. 15 is provided. The first surface 15 a corresponds to the first temperature control duct 11, and the second surface 15 b corresponds to the second temperature control duct 12. Therefore, it is possible to reduce the number of parts and save space in a configuration in which a plurality of secondary batteries 13 are accommodated in a plurality of locations.
　（２）二次電池１３は、電池用ダクトとしての第１温調ダクト１１に収容されている。各二次電池は、その一部が電池用ダクトに面していれば、電池用ダクトを流れる熱媒体により温度調整される。この実施形態では二次電池１３は、そのほぼ全体が熱媒体と接する状態となっている。そのため、二次電池の一部が電池用ダクトに面している構成に比べて、温度調整を効率良く行うことができる。 (2) The secondary battery 13 is accommodated in a first temperature control duct 11 as a battery duct. If a part of each secondary battery faces the battery duct, the temperature is adjusted by the heat medium flowing through the battery duct. In this embodiment, the secondary battery 13 is substantially in contact with the heat medium. Therefore, temperature adjustment can be performed more efficiently than a configuration in which a part of the secondary battery faces the battery duct.
　（３）連通ダクト１７を介して熱媒体が循環可能となるように複数の第１温調ダクト１１が設けられている。連通ダクト１７には熱媒体駆動部１８が設けられている。したがって、二次電池１３の温度が外気温度の影響を受け難く、外気導入用のダクトや廃棄用のダクトが不要になる。 (3) A plurality of first temperature control ducts 11 are provided so that the heat medium can be circulated through the communication duct 17. A heat medium driving unit 18 is provided in the communication duct 17. Therefore, the temperature of the secondary battery 13 is hardly affected by the outside air temperature, and the outside air introduction duct and the disposal duct are not necessary.
　（４）熱電変換素子としてペルチェ素子が使用されている。ペルチェ素子は熱電変換素子として一般に使用されている。そのため、所望の性能の熱電変換素子を容易に得ることができる。 (4) Peltier elements are used as thermoelectric conversion elements. Peltier elements are generally used as thermoelectric conversion elements. Therefore, a thermoelectric conversion element with desired performance can be easily obtained.
　（５）第１温調ダクト１１、第２温調ダクト１２及び連通ダクト１７は断熱性を有する材質、例えば、樹脂で形成されている。したがって、それらが断熱性の低い金属材料で形成される場合に比べて、熱電変換素子１５により冷却された熱媒体が外部の熱により加熱されたり、熱電変換素子１５により加熱された熱媒体の熱がダクトの壁を介して外部に逃げたりすることが抑制される。そのため、二次電池１３の冷却あるいは加熱が効率良く行われる。 (5) The first temperature control duct 11, the second temperature control duct 12, and the communication duct 17 are formed of a heat-insulating material, for example, a resin. Therefore, the heat medium cooled by the thermoelectric conversion element 15 is heated by external heat or the heat of the heat medium heated by the thermoelectric conversion element 15 as compared with the case where they are formed of a metal material having low heat insulating properties. Escapes to the outside through the wall of the duct. Therefore, the secondary battery 13 is efficiently cooled or heated.
　（６）第１温調ダクト１１は、本体１１ａと蓋部１１ｂとを備える。二次電池１３は蓋部１１ｂに形成された凸部１１ｃにより支持された状態で第１温調ダクト１１内に収容されている。したがって、二次電池１３を所定間隔で第１温調ダクト１１内に収容する組立作業が容易になる。 (6) The first temperature control duct 11 includes a main body 11a and a lid portion 11b. The secondary battery 13 is accommodated in the first temperature control duct 11 in a state of being supported by the convex portion 11c formed on the lid portion 11b. Therefore, the assembling work for accommodating the secondary battery 13 in the first temperature control duct 11 at a predetermined interval is facilitated.
　実施形態は前記に限定されるものではなく、例えば、次のように具体化してもよい。 The embodiment is not limited to the above, and may be embodied as follows, for example.
　第１温調ダクト１１は二つに限らず三つ以上であってもよい。例えば、第１温調ダクト１１が三つの場合、第２温調ダクト１２は図３に示すように二つになる。また、第１温調ダクト１１が四つの場合も、第２温調ダクト１２は二つになる。 The first temperature control duct 11 is not limited to two and may be three or more. For example, when there are three first temperature control ducts 11, there are two second temperature control ducts 12 as shown in FIG. Also, when there are four first temperature control ducts 11, there are two second temperature control ducts 12.
　第１温調ダクト１１を流れる熱媒体を循環使用せずに、廃棄する構成にしてもよい。この場合、連通ダクト１７は不要になる。また、第２温調ダクト１２と連通ダクト１７との干渉を避けるために第２温調ダクト１２の両端部を屈曲形成する必要がなくなる。そして、電池モジュール１０を使用する際には、例えば、図４に示すように、熱媒体としての外気を導入する外気導入ダクト２０ａが各第１温調ダクト１１の一端側に連結され、各第１温調ダクト１１を通過した熱媒体を廃棄する廃棄ダクト２０ｂが各第１温調ダクト１１の一端側に連結される。 The heat medium flowing through the first temperature control duct 11 may be discarded without being circulated. In this case, the communication duct 17 becomes unnecessary. Further, it is not necessary to bend both ends of the second temperature control duct 12 in order to avoid interference between the second temperature control duct 12 and the communication duct 17. When using the battery module 10, for example, as shown in FIG. 4, an outside air introduction duct 20 a that introduces outside air as a heat medium is connected to one end side of each first temperature control duct 11. A waste duct 20 b that discards the heat medium that has passed through the first temperature control duct 11 is connected to one end side of each first temperature control duct 11.
　第２温調ダクト１２を流れる熱媒体を循環使用する構成にしてもよい。例えば、図５に示すように、第２温調ダクト１２を閉ループを成すように形成し、第２温調ダクト１２の第１温調ダクト１１と隣接しない箇所に熱媒体駆動部２１及びラジエータ２２を設ける。 The heat medium flowing through the second temperature control duct 12 may be used in a circulating manner. For example, as shown in FIG. 5, the second temperature control duct 12 is formed so as to form a closed loop, and the heat medium driving unit 21 and the radiator 22 are disposed at a location not adjacent to the first temperature control duct 11 of the second temperature control duct 12. Is provided.
　熱電変換素子１５は、第１温調ダクト１１と第２温調ダクト１２との境界部（隔壁１４）に設けられていればよく、各第１温調ダクト１１の二次電池１３と対向する箇所のみに設けられる構成に限らない。例えば、図６に示すように、複数の二次電池１３の一部が熱電変換素子１５と対向せず、かつ熱電変換素子１５の一部が二次電池１３と対向しないように電池モジュール１０を構成してもよい。また、第１温調ダクト１１の二次電池１３と対向する箇所に加えて二次電池１３と対向しない箇所に熱電変換素子１５を設けてもよい。 The thermoelectric conversion element 15 only needs to be provided at the boundary portion (partition wall 14) between the first temperature control duct 11 and the second temperature control duct 12, and faces the secondary battery 13 of each first temperature control duct 11. It is not restricted to the structure provided only in a location. For example, as shown in FIG. 6, the battery module 10 is arranged such that a part of the plurality of secondary batteries 13 does not face the thermoelectric conversion element 15 and a part of the thermoelectric conversion element 15 does not face the secondary battery 13. It may be configured. Moreover, in addition to the location facing the secondary battery 13 of the first temperature control duct 11, the thermoelectric conversion element 15 may be provided at a location not facing the secondary battery 13.
　熱電変換素子１５は、第１温調ダクト１１の二次電池１３と対向しない箇所のみに設けられてもよい。 The thermoelectric conversion element 15 may be provided only in a portion of the first temperature control duct 11 that does not face the secondary battery 13.
　各第１温調ダクト１１に設けられる熱電変換素子１５は複数ではなく、一つでもよい。 The number of thermoelectric conversion elements 15 provided in each first temperature control duct 11 may be one, not a plurality.
　熱媒体は空気に限らず、他の気体や液体であってもよい。第１温調ダクト１１を流れる熱媒体とてして液体を使用する場合は、二次電池１３の端子同士や配線同士が短絡するのを防止するため非導電性の液体を使用する必要がある。 The heat medium is not limited to air but may be other gas or liquid. When using a liquid as a heat medium flowing through the first temperature control duct 11, it is necessary to use a non-conductive liquid in order to prevent the terminals of the secondary battery 13 and the wirings from being short-circuited. .
　熱電変換素子１５が第１温調ダクト１１の熱媒体を冷却する場合、第２の面１５ｂを冷却する方法として、第２温調ダクト１２を流れる熱媒体として沸点の低い液体を使用してもよい。この方法によれば、熱媒体の相変化、即ち第２の面１５ｂに接触した液体が気化する際の潜熱により第２の面１５ｂを冷却することができる。 When the thermoelectric conversion element 15 cools the heat medium of the first temperature control duct 11, as a method of cooling the second surface 15 b, a liquid having a low boiling point may be used as the heat medium flowing through the second temperature control duct 12. Good. According to this method, the second surface 15b can be cooled by the phase change of the heat medium, that is, the latent heat generated when the liquid in contact with the second surface 15b is vaporized.
　熱媒体として液体を用いた場合、液体は気体に比べて熱伝達率が高いのでフィン１６を省略しても熱電変換素子１５による熱媒体の冷却及び加熱を効率良く行うことができる。したがって、フィン１６を省略して部品点数を減らすことができる。 When a liquid is used as the heat medium, since the liquid has a higher heat transfer coefficient than the gas, the heat medium can be efficiently cooled and heated by the thermoelectric conversion element 15 even if the fins 16 are omitted. Therefore, the number of parts can be reduced by omitting the fins 16.
　フィン１６を省略する場合、第１の面１５ａ及び第２の面１５ｂのいずれか一方が隔壁１４に密着するように熱電変換素子１５を隔壁１４に固定する。この場合、隔壁１４において熱電変換素子１５が取り付けられる部分はインサート成型された金属板であってもよい。 When the fin 16 is omitted, the thermoelectric conversion element 15 is fixed to the partition wall 14 so that either the first surface 15 a or the second surface 15 b is in close contact with the partition wall 14. In this case, the part to which the thermoelectric conversion element 15 is attached in the partition 14 may be an insert-molded metal plate.
　第１温調ダクト１１内の二次電池１３の配置は、その厚さ方向が第２温調ダクト１２の長手方向と平行に延びる状態に限らない。例えば、二次電池１３の厚さ方向の一方の面が第１温調ダクト１１の蓋部１１ｂと対向するように二次電池１３を配置してもよい。また、二次電池１３の厚さ方向の一方の面が第２温調ダクト１２と対向するように二次電池１３配置してもよい。 The arrangement of the secondary battery 13 in the first temperature control duct 11 is not limited to a state in which the thickness direction extends in parallel with the longitudinal direction of the second temperature control duct 12. For example, the secondary battery 13 may be arranged so that one surface in the thickness direction of the secondary battery 13 faces the lid portion 11 b of the first temperature control duct 11. Further, the secondary battery 13 may be arranged so that one surface in the thickness direction of the secondary battery 13 faces the second temperature control duct 12.
　電池モジュール１０は、二次電池１３が、電池用ダクトに収容された構成に限らず、二次電池１３の一部が第１温調ダクト（電池収容ダクト１１）に面する構成としてもよい。例えば、図７（ａ）に示すように、電池用ダクトを隔壁１４と、隔壁１４から二次電池１３側に向かって二次電池１３の近くまで延びる底壁と、蓋部１１ｂの一部とで構成してもよい。もちろん、連通ダクト１７の位置も変更される。 The battery module 10 is not limited to the configuration in which the secondary battery 13 is accommodated in the battery duct, but may be configured such that a part of the secondary battery 13 faces the first temperature control duct (battery accommodation duct 11). For example, as shown in FIG. 7A, the battery duct has a partition wall 14, a bottom wall extending from the partition wall 14 toward the secondary battery 13 and close to the secondary battery 13, and a part of the lid portion 11b. You may comprise. Of course, the position of the communication duct 17 is also changed.
　電池モジュール１０は、二次電池１３全体が電池用ダクトの外に設けられた構成としてもよい。例えば、第２温調ダクト１２を挟んで設けられた二つの電池用ダクトの各々において、第２温調ダクト１２が設けられた壁と反対側の壁の外面に二次電池１３の一部が接触してもよい。この場合、電池用ダクトにおいて二次電池１３が接触する部分を熱伝導率の高い材料、例えば金属製とする。 The battery module 10 may have a configuration in which the entire secondary battery 13 is provided outside the battery duct. For example, in each of two battery ducts provided with the second temperature control duct 12 in between, a part of the secondary battery 13 is formed on the outer surface of the wall opposite to the wall on which the second temperature control duct 12 is provided. You may touch. In this case, the part where the secondary battery 13 contacts in the battery duct is made of a material having high thermal conductivity, for example, metal.
　電池モジュール１０の第１温調ダクト１１を、図７（ｂ）に示すように、隔壁１４と、蓋部１１ｂの一部と、隔壁１４から二次電池１３側に向かって蓋部１１ｂと平行に延びる底壁とで断面コ字状に形成してもよい。この場合も、連通ダクト１７の位置は変更される。 As shown in FIG. 7B, the first temperature control duct 11 of the battery module 10 is parallel to the partition wall 14, a part of the lid portion 11b, and the lid portion 11b from the partition wall 14 toward the secondary battery 13 side. The bottom wall may extend in a U-shaped cross section. Also in this case, the position of the communication duct 17 is changed.
　電池モジュール１０は、二次電池１３の一部が電池用ダクトに収容された構成や、電池用ダクトの側壁や底壁に開口部が形成された構成としてもよい。 The battery module 10 may have a configuration in which a part of the secondary battery 13 is accommodated in a battery duct, or a configuration in which an opening is formed in a side wall or a bottom wall of the battery duct.
　電池モジュール１０は、第１温調ダクト１１内に収容された全ての二次電池１３が並列に接続されて共通のプラス端子及びマイナス端子に接続された構成、全ての二次電池１３が直列に接続された構成、あるいは直列に接続された複数の二次電池１３の組同士が並列に接続された構成のいずれであってもよい。 The battery module 10 has a configuration in which all the secondary batteries 13 accommodated in the first temperature control duct 11 are connected in parallel and connected to a common plus terminal and a minus terminal, and all the secondary batteries 13 are connected in series. Either a connected configuration or a configuration in which a plurality of sets of secondary batteries 13 connected in series are connected in parallel may be used.
　第１温調ダクト１１、第２温調ダクト１２及び連通ダクト１７の形状は断面矩形状に限らない。 The shape of the first temperature control duct 11, the second temperature control duct 12, and the communication duct 17 is not limited to a rectangular cross section.
　二次電池１３は角型電池に限らず、円筒型電池やラミネート型電池であってもよい。 The secondary battery 13 is not limited to a square battery, but may be a cylindrical battery or a laminate battery.
　電池は二次電池１３に限らず、燃料電池であってもよい。 The battery is not limited to the secondary battery 13 and may be a fuel cell.
　第１温調ダクト１１（電池温調用ダクト）と、第２温調ダクト１２（熱電変換素子温調用ダクト）とは一体形成された構成に限らない。例えば、各第１温調ダクト１１（電池温調用ダクト）と、第２温調ダクト１２（熱電変換素子温調用ダクト）とを別々に形成した後、第１温調ダクト１１（電池温調用ダクト）で第２温調ダクト１２（熱電変換素子温調用ダクト）を挟むように第１温調ダクト１１と第２温調ダクト１２とを接着あるいは固定してもよい。 The first temperature control duct 11 (battery temperature control duct) and the second temperature control duct 12 (thermoelectric conversion element temperature control duct) are not limited to a single structure. For example, after each first temperature control duct 11 (battery temperature control duct) and second temperature control duct 12 (thermoelectric conversion element temperature control duct) are formed separately, the first temperature control duct 11 (battery temperature control duct) is formed. ), The first temperature control duct 11 and the second temperature control duct 12 may be bonded or fixed so as to sandwich the second temperature control duct 12 (thermoelectric conversion element temperature control duct).
　蓋部１１ｂを本体１１ａにねじで固定する代わりに、接着剤で固着してもよい。しかし、蓋部１１ｂがねじで固定された構成では、蓋部１１ｂを取り外して二次電池１３の保守点検を行うことが容易になる。 Instead of fixing the lid 11b to the main body 11a with a screw, it may be fixed with an adhesive. However, in the configuration in which the lid portion 11b is fixed with a screw, it becomes easy to remove the lid portion 11b and perform maintenance and inspection of the secondary battery 13.

Claims (6)

  1. 　複数の第１温調ダクトと、
    　前記複数の第１温調ダクトを流れる熱媒体によってそれぞれ温度調整される複数の電池と、
    　前記複数の第１温調ダクトに隣接するとともに二つの前記第１温調ダクトに挟まれるように設けられた第２温調ダクトと、
    　前記第１温調ダクトの各々と前記第２温調ダクトとの境界部に設けられる熱電変換素子と、を備え、
    　同熱電変換素子は通電の極性に応じて放熱及び吸熱のうちの一方を行う第１の面及び他方を行う第２の面を有し、前記第１の面が前記第１温調ダクトに対応するとともに前記第２の面が前記第２温調ダクトに対応するように設けられる、ことを特徴とする電池モジュール。     A plurality of first temperature control ducts;
    A plurality of batteries each having a temperature adjusted by a heat medium flowing through the plurality of first temperature control ducts;
    A second temperature control duct provided adjacent to the plurality of first temperature control ducts and sandwiched between the two first temperature control ducts;
    A thermoelectric conversion element provided at a boundary portion between each of the first temperature control ducts and the second temperature control duct;
    The thermoelectric conversion element has a first surface that performs one of heat dissipation and heat absorption and a second surface that performs the other according to the polarity of energization, and the first surface corresponds to the first temperature control duct. And the second surface is provided so as to correspond to the second temperature control duct.
  2. 　前記複数の電池の各々は対応する前記第１温調ダクトに収容されている請求項１に記載の電池モジュール。 The battery module according to claim 1, wherein each of the plurality of batteries is accommodated in the corresponding first temperature control duct.
  3. 　前記熱媒体が前記複数の第１温調ダクトを循環するように前記複数の第１温調ダクト同士を接続する連通ダクトをさらに備え、
    　前記連通ダクトには熱媒体駆動部が設けられている請求項１又は請求項２に記載の電池モジュール。     A communication duct connecting the plurality of first temperature control ducts such that the heat medium circulates through the plurality of first temperature control ducts;
    The battery module according to claim 1, wherein the communication duct is provided with a heat medium driving unit.
  4. 　前記熱電変換素子はペルチェ素子である請求項１～請求項３のいずれか一項に記載の電池モジュール。 The battery module according to any one of claims 1 to 3, wherein the thermoelectric conversion element is a Peltier element.
  5. 　前記第１温調ダクトは、本体と、凸部を有する蓋部とを備え、前記複数の電池は前記凸部により支持される請求項１～請求項４のいずれか１項に記載の電池モジュール。 The battery module according to any one of claims 1 to 4, wherein the first temperature control duct includes a main body and a lid portion having a convex portion, and the plurality of batteries are supported by the convex portion. .
  6. 　前記第１温調ダクト及び前記第２温調ダクトは、断熱性を有する材質で形成されている請求項１～請求項５のいずれか１項に記載の電池モジュール。 The battery module according to any one of claims 1 to 5, wherein the first temperature control duct and the second temperature control duct are formed of a heat-insulating material.
PCT/JP2012/067975 2011-07-19 2012-07-13 Battery module WO2013011958A1 (en)

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