JPWO2011149076A1 - Battery module - Google Patents

Abstract

Provided is an assembled battery module capable of uniforming internal temperature. The assembled battery module 100 of the present invention includes plate-like spacers 101a and 101b, heat dissipating members 103a and 103b, an interelectrode wiring tool, and a plurality of batteries 104. The spacers 101a and 101b are used for inserting and holding the batteries 104. A plurality of battery insertion holes 101c and 101d are included, the battery insertion holes are spaced from each other, and the battery 104 is inserted and held in the battery insertion holes 101c and 101d. Electrically connected by the inter-electrode wiring tool, and the heat dissipating member 103a is insulated and fixed to one electrode side of the battery 104, and the heat dissipating member 103b is insulated and fixed to the other electrode side of the battery 104. It is attached.

Description

  The present invention relates to an assembled battery module.

  In recent years, as a usage form of a primary battery and a secondary battery, there is an assembled battery module in which a plurality of single cells are combined and housed in a dedicated container such as a battery holder or a battery case. Recently, in order to meet the demand for large electric power (large capacity) in electric vehicles, construction machines, industrial machines, and the like, battery pack modules are used in a state of being connected in series and in parallel.

  In assembled battery modules, for example, heating may be required for quick output under low temperature conditions such as winter, and heat generation during discharging is required in general temperature environments other than winter. There are some cases. Patent Document 1 discloses a technique for cooling an assembled battery module by allowing a refrigerant to pass through a chamber duct provided on a side surface of the assembled battery module. Patent Document 2 discloses a technique for cooling a battery by supplying air using a blower blower (fan).

JP 2009-099490 A JP 2009-056940 A

  On the other hand, the assembled battery module has a local high temperature problem that heat is accumulated near the center of the assembled battery module due to the heat generated by the battery during discharge, and only the battery near the center is deteriorated. is there. When only the battery in the central part has deteriorated, the entire assembled battery module cannot be used due to the deteriorated battery in the central part, even though the battery in the peripheral part still has a lifetime. However, in the techniques of Patent Documents 1 and 2, it is difficult to solve the problem of local heat generation in the assembled battery module and make the temperature inside the assembled battery module uniform.

  Then, an object of this invention is to provide the assembled battery module which can make internal temperature uniform.

In order to achieve the above object, an assembled battery module of the present invention includes:
An assembled battery module,
Including a plate-like spacer, two heat dissipating members, an inter-electrode wiring device and a plurality of batteries,
The spacer includes a plurality of battery insertion holes for inserting and holding the battery,
The battery insertion holes are spaced from each other,
The battery is inserted and held in the battery insertion hole,
The electrodes of the plurality of batteries are electrically connected by the interelectrode wiring tool,
One of the two heat dissipating members is fixedly insulated and attached to one electrode side of the battery,
The other of the two heat radiating members is fixedly insulated and attached to the other electrode side of the battery.
It is characterized by that.

  According to the present invention, the spacer for holding the battery is plate-shaped, and the plurality of battery insertion holes of the plate-shaped spacer are arranged at intervals from each other, so that Since there is a gap, air can freely flow in the assembled battery module. As a result, the temperature in the assembled battery module can be made uniform.

FIG. 1 is an exploded perspective view showing a configuration of an example (Embodiment 1) of an assembled battery module of the present invention. FIG. 2A is an external perspective view showing the configuration of the assembled battery module of Embodiment 1. FIG. FIG.2 (b) is sectional drawing seen in the II direction of the assembled battery module shown to Fig.2 (a). FIG.2 (c) is sectional drawing seen in the II-II direction of the assembled battery module shown to Fig.2 (a). FIG. 3 is an exploded perspective view illustrating a configuration of another example of the assembled battery module according to the first embodiment. FIG. 4A is an exploded perspective view showing the configuration of another example (Embodiment 2) of the assembled battery module of the present invention. FIG. 4B (a) is a plan view of the assembled battery module according to Embodiment 2 as viewed from one plate-like heat radiating member side. 4B (b) is a cross-sectional view of the assembled battery module shown in FIG. 4B (a) when viewed in the III-III direction. FIG. 5 is a schematic diagram showing another example of a hollow tubular long-axis heat conductive member in the assembled battery module of the second embodiment. FIG. 6 is a perspective view illustrating a configuration of another example of the assembled battery module according to the second embodiment. Fig.7 (a) is a perspective view which shows the structure of the further another example (Embodiment 3) of the assembled battery module of this invention. FIG.7 (b) is sectional drawing seen in the IV-IV direction of the assembled battery module shown to Fig.7 (a).

  The assembled battery module of the present invention further includes a long shaft member, and the spacer includes a long shaft member insertion hole for inserting and holding the long shaft member, and the long shaft member insertion hole. It is preferable that the long shaft-shaped member is inserted and held, and at least one end of the long shaft-shaped member is in direct contact with at least one of the two heat radiating members. In this case, in the battery module of the present invention, in the plate-like spacer, the long shaft member insertion hole is disposed between the two battery insertion holes, and is disposed between the two battery insertion holes. It is preferable that the long axis member is inserted and held in the long axis member insertion hole. Moreover, the assembled battery module of this invention may be the form that the said long axis-shaped member is a hollow tubular shape and the fluid can pass the pipe | tube of the said long-axis-shaped member, for example. In the assembled battery module of the present invention, at least one of the two heat dissipating members includes a long-axis member insertion hole for inserting an end of the long-axis member, and the end of the long-axis member However, it is preferable to be inserted into the long-axis member insertion hole. The long shaft member preferably has thermal conductivity.

  The assembled battery module of the present invention further includes a heat conductive sheet having electrical insulation, and at least one electrode of the battery is in contact with at least one of the two heat radiating members via the heat conductive sheet. Preferably it is. In this case, in the assembled battery module of the present invention, the heat conductive sheet includes a long shaft-shaped member insertion hole for inserting an end of the long shaft-shaped member, and the end of the long shaft-shaped member is It is preferable that the heat dissipation member is in contact with the long shaft member insertion hole.

  It is preferable that the assembled battery module of the present invention further includes a connecting member, and the two heat radiating members are tightened by the connecting member.

  In the assembled battery module of the present invention, the long shaft-shaped member is a hollow tubular member, the connecting member is a bolt and a nut, the bolt is inserted into the hollow tubular long shaft-shaped member, and the nut is inserted into the nut. It is preferable that the two heat dissipating members are tightened by screwing. Examples of the hollow tubular long axis member include an aluminum pipe.

  In the assembled battery module of the present invention, it is preferable that the battery is a cylindrical battery, and the shape of the battery insertion hole is a shape along the circumference of the cylindrical battery. In the assembled battery module of the present invention, the battery is particularly preferably a secondary battery.

  The assembled battery module of the present invention further includes a voltage monitoring terminal, and the voltage monitoring terminal is preferably connected to the interelectrode wiring tool.

  In the assembled battery module of the present invention, the shortest distance from the peripheral edge of one battery insertion hole to the peripheral edge of another adjacent battery insertion hole in the plurality of battery insertion holes is in the range of about 2 to about 10 mm. It is preferably in the range of about 3 to about 6 mm, more preferably in the range of about 4 to about 5 mm.

  Hereinafter, the assembled battery module of the present invention will be described in detail by way of examples. However, the present invention is not limited to the following examples. In addition, in the following FIGS. 1-7, the same code | symbol is attached | subjected to the same part.

Embodiment 1
1 and 2 show the configuration of the assembled battery module of the present embodiment. FIG. 1 is an exploded perspective view showing the configuration of the assembled battery module of the present embodiment. Fig.2 (a) is an external appearance perspective view of the assembled battery module of this embodiment. FIG.2 (b) is sectional drawing seen in the II direction of the assembled battery module shown to Fig.2 (a). FIG.2 (c) is sectional drawing seen in the II-II direction of the assembled battery module shown to Fig.2 (a). As shown in FIG. 1 and FIG. 2, the assembled battery module 100 of this embodiment includes two plate-like spacers 101a and 101b, and a rod-like long shaft member (long shaft heat conductive member) having thermal conductivity. 102a, a hollow tubular long-axis member (long-axis heat conductive member) 102b having thermal conductivity, two plate-like heat radiation members (plate-like heat radiation members) 103a and 103b, and a plurality of cylindrical single members The battery 104, two heat conductive sheets 105a and 105b, a connecting member (fixing bolt 106 and fixing nut 107), and an interelectrode wiring tool are included. In FIG. 1, a plate-shaped heat radiation member 103a, a heat conductive sheet 105a, a part of a rod-like long-axis heat conductive member 102a, a part of a hollow tubular long-axis heat-conductive member 102b, and a cylindrical unit cell 104 A part is shown with a dashed-two dotted line. In FIG. 1 and FIG. 2, illustration of the said interelectrode wiring tool is abbreviate | omitted for convenience of explanation. Hereinafter, the “cylindrical unit cell” may be referred to as a “unit cell”.

  The plate-like spacers 101a and 101b have the same shape and are rectangular flat plates. The plate-shaped spacers 101a and 101b are circular along the circumference of the unit cell 104, and are formed at a substantially constant distance from each other, and the battery insertion hole 101c and the battery insertion hole 101d (each 28 places). Have The battery insertion holes 101c and the battery insertion holes 101d in FIG. 1 are formed so as to form rows in the vertical direction in FIG. 1, and four rows and three rows are alternately formed. The plate-like spacers 101a and 101b are formed with a plurality of long-axis heat conductive member insertion holes 101e and 101f between two adjacent battery insertion holes 101c and 101d in the vicinity of the center in the surface direction. Long-axis heat conductive member insertion holes 101g and 101h are also formed near the four corners. In the plurality of battery insertion holes 101c and 101d, the shortest distance from the peripheral part of one battery insertion hole to the peripheral part of another adjacent battery insertion hole is, for example, as described above.

  The material for forming the plate-like spacers 101a and 101b is preferably a material having excellent thermal conductivity from the viewpoint of heat dissipation. In view of the fact that the heat is high during use, the forming material is preferably a material that is not easily thermally deformed. Examples of the forming material include organic materials such as resins, inorganic materials such as ceramics, and metal materials. Examples of the resin include a thermoplastic resin or a thermosetting resin. Examples of the thermoplastic resin include polybutylene terephthalate (PBT), polypropylene (PP), nylon, polyphenylene sulfide (PPS), acrylonitrile-butadiene-styrene (ABS), modified polyphenylene ether (PPE), polyacetal (POM), Examples include polyetheretherketone (PEEK). Among these, the PBT is particularly preferable because it is excellent in rigidity, heat resistance, moldability, and the like. The “rigidity” means a property that does not distort with respect to forces such as bending and twisting. Examples of the thermosetting resin include phenol resin, urea resin, and epoxy resin. Examples of the metal material include copper, aluminum, copper alloy, and aluminum alloy.

  Examples of the unit cell 104 include a primary battery and a secondary battery. Among these, a secondary battery is preferable. Examples of the secondary battery include a lithium ion battery, a nickel cadmium storage battery, and a nickel hydrogen battery. Among these, a lithium ion battery is particularly preferable. In addition, in the assembled battery module of this embodiment, the battery which comprises an assembled battery module is a cylindrical cell, However, This invention is not limited to this example. The single battery constituting the assembled battery module of the present invention may be, for example, a single battery having a shape other than a cylindrical shape.

  The plate-like heat radiating members 103a and 103b are rectangular flat plates having the same shape and excellent thermal conductivity. The plate-like heat radiating members 103a and 103b are usually metal plates, and an insulating film is usually stuck to the surface located on the electrode side of the battery. Long-axis heat conductive member insertion holes 103c and 103d are formed in the vicinity of the four corners of the plate-like heat radiation members 103a and 103b. Examples of the metal forming the plate-like heat radiation members 103a and 103b include aluminum, copper, various stainless steels (SUS), and iron. Among these, aluminum is particularly preferable from the viewpoint of cost and versatility.

  In the first embodiment, the heat conductive sheets 105a and 105b are rectangular sheets having the same shape and having heat conductivity and electrical insulation. In addition, if the said heat conductive sheet has electrical insulation, since it is also possible to abbreviate | omit the said insulating film, for example, it is preferable. The heat conductive sheets 105a and 105b are sheets formed from a material having high heat conductivity, for example. The heat conductive sheets 105a and 105b are respectively formed with long-axis heat conductive member insertion holes 105e and 105f near the center in the surface direction, and long-axis heat conductivity near the four corners. Member insertion holes 105c and 105d are formed. Examples of the material for forming the heat conductive sheets 105a and 105b include polyimide, epoxy, silicone, and silicone ceramics. The thermal conductivity of the thermal conductive sheets 105a and 105b is, for example, in the range of about 1 to about 15 W / m · K, preferably in the range of about 3 to about 12 W / m · K, as thermal conductivity. More preferably, it is in the range of about 5 to about 8 W / m · K.

  There are two types of long-axis heat conductive members: a rod-shaped long-axis heat conductive member 102a and a hollow tubular long-axis heat conductive member 102b. The hollow tubular long-axis heat conductive member 102b allows a bolt as a connecting member to pass therethrough, and is near the four corners of the plate-like spacers 101a and 101b and the plate-like heat radiation members 103a and 103b. Be placed. Further, the rod-like long-axis heat conductive member 102a has higher heat conductivity than that of the hollow tube, and in the vicinity of the center in the surface direction of the plate spacers 101a and 101b and the plate heat dissipating members 103a and 103b, Located between the batteries.

  Examples of the material for forming the rod-shaped long-axis heat conductive member 102a and the hollow tubular long-axis heat conductive member 102b include metal materials, resin materials, inorganic materials, and the like. Examples of the metal material include aluminum, copper, silver, various stainless steels (SUS), iron alloys, copper alloys, and the like. Examples of the resin material include a resin filled with a carbon filler, a resin filled with a metal filler, polyphenylene sulfide (PPS), polyether ether ketone (PEEK), and the like. Examples of the inorganic material include carbon materials; ceramics such as alumina, kaolin, or combinations thereof. Among these, aluminum is particularly preferable from the viewpoint of cost and versatility.

  As shown in FIGS. 1 and 2, the plate-like spacers 101a and 101b are arranged at a substantially constant distance from each other, and in this state, the single cells 104 are inserted into the battery insertion holes 101c and 101d, Is retained. Thus, by holding each unit cell 104 in the battery insertion holes 101c and 101d, in the assembled battery module of this embodiment, each unit cell 104 is fixed to the both plate-like spacers. Each single cell 104 is inserted and disposed in the battery insertion holes 101c and 101d so that the direction of the electrode is different for each vertical column in FIG. Although not shown in FIG. 1, the interelectrode wiring tool is connected to the electrodes of each unit cell 104 by, for example, resistance welding, and the electrodes of two adjacent unit cells 104 are electrically connected by the interelectrode wiring unit. Connected. In the assembled battery module of the present embodiment, the single cells 104 are connected in series (series connection). In addition, when the unit cells are arranged in the vertical row, for example, so that the direction of the electrodes of the adjacent unit cells is different, the unit cells are connected in parallel. (Parallel connection) is also possible. Further, in the plate-like spacers 101a and 101b, rod-like long-axis heat conductive members 102a are inserted and held in the long-axis heat conductive member insertion holes 101e and 101f near the center. A hollow tubular long-axis heat conductive member 102b is inserted and held in the long-axis heat conductive member insertion holes 101g and 101h near the four corners. For this reason, both the long-axis-shaped conductive members are fixed to the both plate-like spacers. In this state, the heat conductive sheets 105a and 105b and the plate-like heat radiating members 103a and 103b are arranged on both electrode sides of the unit cell 104 so that the heat conductive sheets 105a and 105b are located inside. In this case, both electrodes of each unit cell 104 are in contact with the heat conductive sheets 105a and 105b, and both ends of the rod-like long-axis heat conductive member 102a are long-axis heat conduction of the heat conductive sheets 105a and 105b. The plate-like heat radiating members 103a and 103b are in direct contact through the conductive member insertion holes 105e and 105f, and both ends of the hollow tubular long-axis heat conductive member 102b are connected to the long-axis heat conductivity of the heat conductive sheets 105a and 105b. The plate-like heat radiation members 103a and 103b are in direct contact with each other through the member insertion holes 105c and 105d and the long-axis heat conductive member insertion holes 103c and 103d of the plate-like heat radiation members 103a and 103b. Then, a bolt 106 is inserted from one end of the hollow tubular long-axis heat conductive member 102b and is screwed to the nut 107 at the other end, whereby two plate-like heat radiating members 103a are arranged in the direction indicated by the arrows in FIG. And 103b are tightened, and each unit cell 104 is held by two plate-like heat radiation members 103a and 103b from both electrode sides of the unit cell 104. In the assembled battery module of this embodiment, since the heat radiating member has a flat plate shape, the surface of the plate-side heat radiating members 103a and 103b on the electrode side of the unit cell 104 is smooth. For example, the unit cells 104 are arranged side by side. it can. In this case, both electrodes of the unit cell 104 are in close contact with the heat conductive sheets 105a and 105b, and the heat conductive sheets 105a and 105b are in close contact with the plate-like heat radiation members 103a and 103b. However, heat can be conducted with high efficiency through the unit cell 104, the heat conductive sheets 105a and 105b, and the plate-like heat radiation members 103a and 103b. Further, since both ends of the rod-like long-axis heat conductive member 102a and the hollow tubular long-axis heat conductive member 102b are in direct contact with the plate-like heat radiation members 103a and 103b, the inside and outside of the assembled battery module However, it is possible to conduct heat with high efficiency through the two types of long axis heat conductive members 102a and 102b and the plate-like heat radiation members 103a and 103b.

  In the assembled battery module of this embodiment, as described above, the spacers 101a and 101b are flat plates, and the plurality of battery insertion holes 101c and 101d are formed at a substantially constant distance from each other. A gap is formed between the inserted single cells 104. For this reason, in the assembled battery module of this embodiment, air can flow freely and the internal temperature can be made uniform. As a result, for example, deterioration of the battery capacity (performance deterioration) of the unit cell 104 in the central portion of the assembled battery module of the present embodiment or quality deterioration such as life reduction (for example, promotion of battery capacity reduction due to repeated charging, etc.) is prevented. It is possible to improve product stability and reliability as an assembled battery module.

  In the assembled battery module of the present embodiment, for example, vibration resistance can be improved by tightening with the bolt 106 and the nut 107, and the portion electrically connected to the electrode (positive electrode or negative electrode) of each unit cell 104 Can be protected from vibration, for example. As a result, for example, defects in electrical connection between the single cells 104 can be reduced, and product stability and reliability as an assembled battery module can be improved. Further, in the assembled battery module of the present embodiment, each single cell 104 is fixed to the both plate-like spacers by being inserted and held in the both battery insertion holes. As a result, for example, each single cell 104 can be further protected from vibration. Moreover, in the assembled battery module of this embodiment, both the electrodes of each unit cell 104 and the part electrically connected to the electrodes are in close contact with the heat conductive sheets 105a and 105b, for example, further vibration resistance. Excellent. Further, even if the bolt 106 and the nut 107 are tightened, the long axis heat conductive members 102a and 102b do not apply excessive pressure to both electrodes of each unit cell 104 and a portion electrically connected to the electrodes. Therefore, for example, a short circuit can be avoided.

  The entire assembled battery module and the size of each constituent member of the present invention are appropriately determined depending on, for example, the size or shape of the battery used (for example, a cylindrical shape), capacity, voltage, quantity, or use of the assembled battery module. The

  In the manufacturing method of the assembled battery module of the present invention, the battery and the long-axis heat conductive member may be inserted into the plate-like spacers manually, for example, by automation (robotization). Thus, the assembled battery module can be efficiently manufactured.

  In the assembled battery module of this embodiment, the battery insertion holes are formed at a substantially constant distance from each other, but the present invention is not limited to this. The battery insertion holes only need to be formed at intervals from each other so that a gap can be formed between the unit cells.

  In the assembled battery module of the present embodiment, the number of the plate-like spacers is two, but the present invention is not limited to this, and the number of the plate-like spacers may be one or three, for example. It may be the above.

  In the assembled battery module of the present embodiment, the arrangement of the battery insertion holes is not limited to that shown in FIG. 1, and may be formed in a straight line as shown in the exploded perspective view of FIG. 3, for example. As shown in FIG. 3, the battery insertion holes 101c and 101d in this assembled battery module are formed in five straight lines in the short direction of the plate spacers 101a and 101b, respectively, and in six straight lines in the same longitudinal direction. It is formed (30 places in total). Thus, the arrangement and number of battery insertion holes formed in the plate-like spacer can be appropriately set according to the required performance of the assembled battery module, for example. In addition to resistance welding, for example, laser welding, arc welding, soldering, or adhesion with a conductive adhesive can be used as the electrical connection between the inter-battery wiring tool and each unit cell.

  In the assembled battery module of the present embodiment shown in FIG. 1, the rod-shaped long-axis heat conductive member has a long-axis columnar shape, but the present invention is not limited to this, for example, a columnar shape In addition, a prismatic shape (polygonal prism) such as a triangular prism, a quadrangular prism, a pentagonal prism, and a hexagonal prism can be used. From the viewpoint of heat dissipation, the rod-shaped long-axis heat conductive member and the hollow tubular long-axis heat conductive member preferably have heat conductivity, but the heat conductivity is not always necessary. Absent.

  In the assembled battery module of the present embodiment, both ends of the rod-shaped long-axis heat conductive member are in direct contact with the two plate-like heat radiating members, but the present invention is not limited to this. . For example, like the assembled battery module of this embodiment, the heat conductive sheet is disposed between the electrode of the unit cell and the plate-shaped heat radiation member, so that the plate-shaped heat radiation member and the unit cell are arranged. It is only necessary to maintain electrical insulation between the electrodes. Moreover, the state which is contacting the said plate-shaped heat radiating member via the said heat conductive sheet may be sufficient as the edge part of the said rod-shaped long-axis-shaped heat conductive member, for example. However, from the viewpoint of thermal conductivity, it is preferable that the plate-like heat radiating member is in direct contact with the assembled battery module of the present embodiment.

  In the assembled battery module of the present embodiment, the heat conductive sheet is disposed on the surface of the unit cell side of the two plate-like heat radiating members, but the present invention is not limited to this. For example, the heat conductive sheet may be disposed on either one of the two plate-like heat radiating members, or may not be disposed on any of the two plate-like heat radiating members. Moreover, in the assembled battery module of this embodiment, although the said heat radiating member is flat form, this invention is not limited to this. The surface on the electrode side of the unit cell in the heat radiating member is preferably smooth (a flat plate) as in the assembled battery module of the present embodiment, from the viewpoint of battery arrangement. On the other hand, the surface on the opposite side may be, for example, a pleat shape, an external projection such as a fin may be formed, or a curved surface. If the opposite surface of the heat dissipating member has these shapes, the area of the outer surface can be expanded, and for example, heat inside the assembled battery module can be released more efficiently.

  The assembled battery module of the present embodiment may further include, for example, a voltage monitoring terminal; a temperature monitoring sensor such as a thermistor and a thermocouple. The voltage monitoring terminal is connected to the inter-electrode wiring tool, for example. The voltage monitoring terminal can be connected to a voltage monitoring measuring instrument and a voltage data processing device (not shown). The voltage monitoring is effective for preventing, for example, overcharging at the time of charging and overdischarging at the time of discharging of each unit cell constituting the assembled battery module, and keeping the voltage of each unit cell at the same level. By monitoring the voltage, the characteristics of the unit cells constituting the assembled battery module can be averaged so that a large load is not applied to some of the batteries. For this reason, for example, the assembled battery module can be stabilized and made safe, and the lifetime of each unit cell can be prevented from decreasing. The voltage monitoring terminal may be, for example, a terminal branched from the interelectrode wiring tool. For example, the interelectrode wiring tool may also serve as the voltage monitoring terminal.

[Embodiment 2]
The assembled battery module of the present embodiment is an example in which a hollow tubular member is used as the long axis heat conductive member. 4A and 4B show the configuration of the assembled battery module of the present embodiment. FIG. 4A is an exploded perspective view showing the assembled battery module of the present embodiment. FIG. 4B (a) is a plan view of the assembled battery module of the present embodiment as viewed from one plate-like heat radiating member side. 4B (b) is a cross-sectional view of the assembled battery module shown in FIG. 4B (a) when viewed in the III-III direction. As shown in FIGS. 4A and 4B, in the assembled battery module 200 of this embodiment, the hollow tubular long-axis heat conductive member 202a has a long-axis heat conductivity near the center of the plate spacers 101a and 101b. Inserted into the member insertion holes 101e and 101f, and the long-axis heat conductive member insertion holes 105e and 105f of the heat conductive sheets 105a and 105b, the long-axis heat conductive member insertion holes 103e of the plate-like heat radiation members 103a and 103b, and The plate-like heat radiation members 103a and 103b are in direct contact with each other through 103f. The other configuration is the same as that of the assembled battery module of the first embodiment.

  In the assembled battery module of this embodiment, a fluid can be passed through the tube of the hollow tubular long-axis heat conductive member 202a. For this reason, for example, a fluid is allowed to flow into the tube from one end (the left end portion in FIG. 4B (b)) of each hollow tubular long-axis heat conductive member 202a, thereby causing the hollow tubular long-axis heat conductive member to flow. It can be made to flow out from the other end of the sex member 202a (the right end in FIG. 4B (b)). Thereby, for example, the heat inside the assembled battery module can be released to the outside. Examples of the fluid include air, water, oil, LLC (cooling refrigerant: Long Life Coolant), and the like.

  In the assembled battery module of the present embodiment, the hollow tubular long-axis heat conductive member may be constituted by, for example, a single pipe as shown in FIG. The hollow tubular long-axis heat conductive member shown in FIG. 5 has heat conduction portions 202a-1, 202a-2, 202a-3 and 202a-4 connected to each other. With such a shape, for example, the inflow portion and the outflow portion of the fluid 208 can be provided one by one, and the recovered fluid can be easily collected. Further, for example, circulation type fluid supply is possible.

  The assembled battery module of the present embodiment may include, for example, a fluid supply device that supplies fluid. The configuration of an example of an assembled battery module including the fluid supply device is shown in the perspective view of FIG. As shown in the figure, this assembled battery module includes a fluid supply device 210 disposed on the plate-like heat dissipation member 103a side. In FIG. 6, the fluid supply device 210 is indicated by a two-dot chain line. The fluid supply device 210 actively supplies the fluid 208 supplied from the fluid supply port 210a through the long-axis heat conductive member insertion hole 103e of the plate-like heat radiating member 103a. Examples of the fluid supply device include a fan, a pump, a convection heat exchanger, and the like.

[Embodiment 3]
The assembled battery module of the present embodiment is an example of an assembled battery module capable of heating the inside. In FIG. 7, the structure of the assembled battery module of this embodiment is shown. Fig.7 (a) is a perspective view which shows the structure of the assembled battery module of this embodiment. FIG.7 (b) is sectional drawing seen in the IV-IV direction of the assembled battery module shown to Fig.7 (a). As shown in FIG. 7, the assembled battery module 300 of this embodiment includes an assembled battery module main body 100 and a heating device 310. The assembled battery module main body 100 is the assembled battery module of the first embodiment. The heating device 310 is disposed in contact with the plate-like heat radiating member 103a of the assembled battery module main body 100. Examples of the heating device 310 include a heat pan and a warm water heater. In Fig.7 (a), the heating apparatus 310 is shown with a dashed-two dotted line.

  In the assembled battery module of the present embodiment, the inside and outside of the assembled battery module can conduct heat via the plate-like heat radiation member 103a, the heat conduction sheet 105a, the rod-like long-axis heat conductive member 102a, etc. Heat from the heating device 310 can be conducted to the inside of the assembled battery module body 100 to heat the inside of the assembled battery module body 100. For this reason, the capability of an assembled battery module is securable also under low temperature conditions, such as winter, for example.

  The assembled battery module of the present invention can be used as, for example, an on-vehicle standby power supply, a battery-type charger, an on-vehicle (rapid) charger, an on-vehicle photovoltaic power storage battery, and the like. In addition, as its application, for example, output performance with improved current collection efficiency is required, such as a drive power source for electric vehicles / hybrid vehicles, various electrical equipment, electric bicycles, electric motorcycles, industrial machines, robots, etc. Power to the part to be raised. However, its use is not limited and can be applied to a wide range of fields.

100, 200, 300 Battery module 101a, 101b Plate spacer 101c, 101d Battery insertion hole 101e, 101f Insertion hole (long axis member insertion hole) of rod-like long axis heat conductive member 102a formed in plate spacer )
101g, 101h Insertion hole (long axis member insertion hole) of hollow tubular long axis heat conductive member 102b formed in plate-like spacer
102a Rod-like long axis heat conductive member (long axis member)
102b, 202a A hollow tubular long-axis heat conductive member (long-axis member)
103a, 103b Plate-like heat radiating member (heat radiating member)
103c, 103d Insertion holes 103e, 103f of the hollow tubular long-axis heat conductive member 102b formed in the plate-like heat dissipation member Insertion holes of the hollow tubular long-axis heat conductive member 202a formed in the plate-like heat dissipation member 104 Cylindrical cell (battery)
105a, 105b Thermal conductive sheets 105c, 105d Insertion holes 105e, 105f of a hollow tubular long-axis heat conductive member 102b formed in the heat conductive sheet A rod-shaped long-axis heat conductive member 102a formed in the heat conductive sheet Insertion hole 106 bolt (connection member)
107 Nut (connection member)
202a-1, 202a-2, 202a-3, 202a-4 Heat conduction unit 208 Fluid 210 Fluid supply device 210a Fluid supply port 310 Heating device

Claims (15)

An assembled battery module,
Including a plate-like spacer, two heat dissipating members, an inter-electrode wiring device and a plurality of batteries,
The spacer includes a plurality of battery insertion holes for inserting and holding the battery,
The battery insertion holes are spaced from each other,
The battery is inserted and held in the battery insertion hole,
The electrodes of the plurality of batteries are electrically connected by the interelectrode wiring tool,
One of the two heat dissipating members is fixedly insulated and attached to one electrode side of the battery,
The other of the two heat radiating members is fixedly insulated and attached to the other electrode side of the battery.
An assembled battery module. In addition, a long shaft-shaped member is included,
The spacer includes a long-axis member insertion hole for inserting and holding the long-axis member,
The long shaft member is inserted and held in the long shaft member insertion hole,
At least one end of the long shaft-shaped member is in direct contact with at least one of the two heat dissipating members,
The assembled battery module according to claim 1. Furthermore, including a heat conductive sheet having electrical insulation,
At least one electrode of the battery is in contact with at least one of the two heat dissipation members via the heat conductive sheet,
The assembled battery module according to claim 1 or 2, wherein Furthermore, including a connecting member,
The two heat radiating members are tightened by the connecting member,
The assembled battery module according to any one of claims 1 to 3, wherein The long shaft member is a hollow tube,
The connecting member is a bolt and a nut;
The two heat radiating members are tightened by inserting the bolt into the hollow tubular long-axis member and screwing the bolt into the nut.
The assembled battery module according to claim 4, wherein: In the plate spacer, the long member insertion hole is disposed between the two battery insertion holes,
The long shaft member is inserted and held in the long shaft member insertion hole disposed between the two battery insertion holes,
The assembled battery module according to any one of claims 2 to 5, wherein The long shaft member is a hollow tube, and fluid can pass through the tube of the long shaft member.
The assembled battery module according to any one of claims 2 to 6, wherein The battery is a cylindrical battery;
The shape of the battery insertion hole is a shape along the circumference of the cylindrical battery,
The assembled battery module according to any one of claims 1 to 7, wherein In addition, it includes a voltage monitoring terminal,
The voltage monitoring terminal is connected to the interelectrode wiring tool,
The assembled battery module according to any one of claims 1 to 8, wherein The long shaft member has thermal conductivity;
The assembled battery module according to any one of claims 2 to 9, wherein At least one of the two heat dissipating members includes a long shaft member insertion hole for inserting an end of the long shaft member,
The end of the long shaft member is inserted into the long shaft member insertion hole,
The assembled battery module according to any one of claims 2 to 10, wherein The thermal conductive sheet includes a long-axis member insertion hole for inserting an end of the long-axis member,
The end of the long axis member is in contact with the heat dissipation member through the long axis member insertion hole,
The assembled battery module according to any one of claims 3 to 11, wherein the assembled battery module is characterized in that: The hollow tubular long-axis member is an aluminum pipe,
The assembled battery module according to any one of claims 5 to 12, wherein The battery is a secondary battery;
The assembled battery module according to any one of claims 1 to 13, wherein the assembled battery module is characterized in that: The shortest distance from the peripheral edge of one battery insertion hole to the peripheral edge of another adjacent battery insertion hole in the plurality of battery insertion holes is in the range of 2 to 10 mm.
The assembled battery module according to any one of claims 1 to 14, wherein

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