JP6087544B2 - Assembled battery - Google Patents

Description

  Embodiments described herein relate generally to an assembled battery.

  2. Description of the Related Art Conventionally, a battery such as an assembled battery in which a plurality of single cells having electrode portions are housed in a casing is known.

JP 7-147164 A JP 2000-251951 A JP 2005-61690 A JP 2005-285455 A JP 2007-66647 A JP 2009-9888 A JP 2009-16205 A JP 2011-29103 A

"Report No. GTL-DOT-11-VOLTBAT CHEVROLET VOLT BATTERY PACK TESTS" GENERAL TESTING LABORATORIES, INC. 2012

  In this type of battery pack, as an example, it has been desired to suppress the occurrence of sparks and short circuits at electrode portions and the like.

The assembled battery according to the embodiment includes a housing, a first wall, a plurality of single cells, a conductive member, and an insulating cover. The first wall portion is provided in the housing, and the inside of the housing is divided into a first housing portion and a second housing portion. The unit cell has an electrode part, a container having one end part provided with the electrode part and the other end part opposite to the one end part, and penetrates the first wall part, The other end portion was accommodated in the first accommodating portion, and the electrode portion was accommodated in the second accommodating portion. The conductive member is accommodated in the second accommodating portion and electrically connected to the electrode portion. The cover portion is provided in the second housing portion and covers a portion of the unit cell that includes the electrode portion and is housed in the second housing portion and the conductive member. The housing includes a first member provided with the first housing portion and a second member provided with the second housing portion and coupled to the first member.

FIG. 1 is a perspective view showing an example of an assembled battery according to the first embodiment. FIG. 2 is a side view (partially sectional view) showing an example of the internal configuration of the assembled battery according to the first embodiment. FIG. 3 is a side view showing an example of a part of the internal configuration of the assembled battery according to the first embodiment. FIG. 4 is a perspective view showing an example of a unit cell according to the first embodiment. 5 is a cross-sectional view taken along line F5-F5 of FIG. FIG. 6 is a diagram schematically illustrating an example of gas emission in the assembled battery according to the first embodiment. FIG. 7 is a diagram schematically illustrating an example of dew condensation in the assembled battery according to the first embodiment. FIG. 8 is a perspective view showing an example of an assembled battery according to the second embodiment. 9 is a cross-sectional view taken along line F9-F9 in FIG. FIG. 10 is a diagram illustrating an assembled battery according to a modification of the second embodiment, and is a cross-sectional view corresponding to FIG. 9. FIG. 11 is a view showing the assembled battery according to the third embodiment, and is a cross-sectional view corresponding to FIG. 9. FIG. 12 is a front view illustrating an example of the storage battery device according to the fourth embodiment. FIG. 13 is a front view (partially sectional view) showing an example of the internal configuration of the storage battery device according to the fourth embodiment. FIG. 14 is a block diagram illustrating an example of electrical connection of the storage battery device according to the fourth embodiment. FIG. 15 is a front view (partially sectional view) showing an example of the internal configuration of the storage battery device according to the fifth embodiment. FIG. 16 is a perspective view illustrating an example of the storage battery device according to the sixth embodiment. FIG. 17 is a perspective view illustrating an example of a part of the storage battery device according to the sixth embodiment. 18 is a cross-sectional view taken along line F18-F18 in FIG. FIG. 19 is a front view (partially sectional view) showing an example of the internal configuration of the storage battery device according to the seventh embodiment. FIG. 20 is a front view (partially sectional view) showing an example of the internal configuration of the storage battery device according to the modification of the seventh embodiment. FIG. 21 is a block diagram illustrating an example of electrical connection of the storage battery device according to the eighth embodiment. FIG. 22 is a flowchart illustrating an example of a flow of a temperature control process executed by the CPU according to the eighth embodiment. FIG. 23 is a front view (partially sectional view) showing an example of the internal configuration of the storage battery device according to the ninth embodiment. FIG. 24 is a block diagram illustrating an example of electrical connection of the storage battery device according to the ninth embodiment. FIG. 25 is a flowchart illustrating an example of a flow of a temperature control process executed by the CPU according to the ninth embodiment. FIG. 26 is a front view showing an example of the storage battery device according to the tenth embodiment. FIG. 27 is a block diagram illustrating an example of electrical connection of the storage battery device according to the tenth embodiment. FIG. 28 is a graph illustrating an example of a temperature change inside and outside the container according to the tenth embodiment. FIG. 29 is a flowchart illustrating an example of a flow of a temperature control process executed by the CPU according to the tenth embodiment.

  The following exemplary embodiments and modifications include similar components. Therefore, below, the same code | symbol is attached | subjected to the same component, and the overlapping description is abbreviate | omitted.

<First Embodiment>
The assembled battery 1 (battery, battery module, battery unit) shown in FIG. 1 includes, for example, a plurality of single cells 3 (battery, single battery unit, single cell, see FIG. 2) connected in series or in parallel. As an example, it can be configured as a secondary battery (storage battery, rechargeable battery). The assembled battery 1 is installed in various devices, machines, facilities, and the like, and can be used as a power source for these various devices, machines, and facilities. For example, the assembled battery 1 is used as a power source for a relatively large mobile device such as an automobile or a bicycle (moving body), or as a stationary power source such as a power source for a POS (point of sales) system. Is done. The assembled battery 1 is also used as a power source for relatively small devices such as mobile phones, personal computers, and portable music players. Moreover, the assembled battery 1 shown by this embodiment can be mounted in various apparatuses etc. as a set which connected two or more in series or in parallel. Moreover, the number, arrangement | positioning, etc. of the cell 3 contained in the assembled battery 1 are not limited to what is disclosed by this embodiment.

  As shown in FIGS. 1 to 3, the assembled battery 1 has a housing 2 (first housing, container). The housing 2 accommodates a plurality of unit cells 3. The housing 2 has a bottom wall 2a (wall, wall portion), a side wall 2b (wall, wall portion), and an end wall 2c (wall, wall portion). The bottom wall 2a is formed in a quadrangular (for example, rectangular) plate shape. The side wall 2b is formed in a quadrangular (for example, rectangular) plate shape. Moreover, the side wall 2b is connected to the edge part of the short direction of the bottom wall 2a, and is extended along the direction (direction orthogonal as an example in this embodiment) which crosses the bottom wall 2a. The end wall 2c is formed in a quadrangular (for example, rectangular) plate shape, and is connected to the end of the bottom wall 2a in the longitudinal direction. Further, the end wall 2c extends along a direction intersecting with the bottom wall 2a (a direction orthogonal as an example in the present embodiment). The side wall 2b is connected to the adjacent end wall 2c.

  In addition, the housing 2 is provided with a partition wall 2e (wall, wall portion, first wall portion, ceiling wall). The partition wall 2e is formed in a quadrangular (for example, rectangular) plate shape. The partition wall 2e is provided apart from the bottom wall 2a and is provided in parallel to the bottom wall 2a. The partition wall 2e is positioned between both ends of the side wall 2b (end wall 2c) in the direction of contact / separation with the wall surface (bottom surface) of the bottom wall 2a. The interior of the housing 2 is divided into two accommodating portions 25a and 25b (a chamber and a space) by the partition wall 2e. The bottom of the accommodating portion 25a (first accommodating portion) is constituted by the bottom wall 2a, and the accommodating portion 25a is surrounded by the bottom wall 2a, the side wall 2b, and the end wall 2c. The bottom of the accommodating portion 25b (second accommodating portion) is constituted by a partition wall 2e, and the accommodating portion 25b is surrounded by the partition wall 2e, the side wall 2b, and the end wall 2c.

  In the present embodiment, as an example, the housing 2 is configured by combining a plurality of members (the case 21 and the dish-like member 22 in the present embodiment). Specifically, the housing 2 includes a case 21 (first member, first housing member) and a plate-like member 22 (second member, second housing member, lid portion, lid) coupled to the case 21. , Dish, dish part).

  The case 21 includes a bottom wall 2a and end portions (one end portion) of the side wall 2b and the end wall 2c, and is configured in a bottomed tubular shape (square tubular shape). The case 21 is provided with an accommodating portion 25a. An opening 21a is provided at the end of the case 21 opposite to the bottom wall 2a side. The opening 21a is included in the accommodating portion 25a. The opening 21 a is covered with a dish-like member 22.

  The dish-like member 22 includes a partition wall 2e, and end portions (other end portions) of the side wall 2b and the end wall 2c, and is configured in a bottomed tubular shape (square tubular shape). The side wall 2b and the end wall 2c of the dish-like member 22 are provided on the peripheral edge 2j of the partition wall 2e (first wall part), and the peripheral wall 2f (first wall) surrounding the portion 3j accommodated in the second accommodating part 25b of the unit cell 3 2 walls). The dish-like member 22 is provided with an accommodating portion 25b. An opening 22a is provided at the end of the dish-like member 22 opposite to the partition wall 2e. The opening 22a is included in the accommodating portion 25b. The plurality of members 21 and 22 are coupled by a fixture (not shown) such as a screw, welding, adhesive, or the like. Note that the configuration of the members 21 and 22 constituting the casing 2 shown here is merely an example, and the casing 2 can be configured by various member shapes, combinations, and the like.

  Moreover, in this embodiment, the housing | casing 2 can be comprised with a synthetic resin material, a metal material, etc. as an example. Moreover, the housing | casing 2 is comprised with an insulating material as an example. When the housing 2 is made of a conductive material, the outer surface or the inner surface of the housing 2 can be covered with an insulating material as necessary. Further, a seal member is provided in the housing 2 as necessary. As an example, this sealing member has a function of preventing moisture permeation into the housing 2 when the housing 2 is made of a synthetic resin material.

  As an example, each of the unit cells 3 can be configured as a lithium ion secondary battery. The unit cell 3 may be another secondary battery such as a nickel metal hydride battery, a nickel cadmium battery, or a lead storage battery. A lithium ion secondary battery is a kind of non-aqueous electrolyte secondary battery, and lithium ions in the electrolyte are responsible for electrical conduction. Examples of the positive electrode material include lithium manganese composite oxide, lithium nickel composite oxide, lithium cobalt composite oxide, lithium nickel cobalt composite oxide, lithium manganese cobalt composite oxide, spinel type lithium manganese nickel composite oxide, and olivine structure. As the negative electrode material, for example, an oxide-based material such as lithium titanate (LTO), a carbonaceous material, a silicon-based material, or the like is used. Further, as an electrolyte (for example, an electrolytic solution), for example, a lithium salt such as a fluorine-based complex salt (for example, LiBF4, LiPF6) is blended, for example, ethylene carbonate, propylene carbonate, diethyl carbonate, ethyl methyl carbonate, dimethyl carbonate. These organic solvents are used alone or in combination.

  As shown in FIG. 4, for example, the unit cell 3 includes a container 3a, a positive electrode part 3b (electrode part, electrode, terminal) and a negative electrode part 3c (electrode part, electrode, terminal) protruding from the container 3a. And have. As an example, an electrode body and an electrolytic solution are accommodated in the container 3a. As an example, the electrode body is formed by winding a positive electrode sheet and a negative electrode sheet, which are power generation elements, in a spiral shape via a separator, and is housed together with an electrolytic solution in a container 3a.

  The container 3a is formed in a flat and substantially rectangular parallelepiped shape. The container 3a is comprised with metals, such as aluminum and an aluminum alloy, as an example. The container 3a may be made of, for example, a synthetic resin material. The container 3a has a bottom wall 3d (wall, wall portion), a top wall 3e (wall, wall portion), and a peripheral wall 3f (wall, wall portion, cross wall). The bottom wall 3d and the top wall 3e are provided substantially parallel to each other. The peripheral wall 3f is provided across the bottom wall 3d and the top wall 3e, and connects the bottom wall 3d and the top wall 3e. The container 3a can be composed of a plurality of members.

  The container 3a includes an end portion 3g (one end portion, a first end portion, an end portion) provided with a positive electrode portion 3b and a negative electrode portion 3c, and an end portion 3h (the other end portion) opposite to the end portion 3g. , Second end, end). The end 3g includes a top wall 3e. The end 3h includes a bottom wall 3d as an example. The positive electrode part 3b and the negative electrode part 3c are provided in the top wall 3e as an example. The positive electrode portion 3b and the negative electrode portion 3b are connected to the positive electrode and the negative electrode of the electrode body, respectively, and protrude from the outer surface (upper surface) of the top wall 3e.

  The container 3a is provided with a safety valve 3i (valve, valve part). The safety valve is provided on the top wall 3e as an example. The safety valve 3i opens the container 3a due to a pressure increase in the container 3a. Specifically, the safety valve 3i opens the container 3a when the top wall 3e is cut at the thin portion 3m (fragile portion) provided in the container 3a due to the pressure increase of the container 3a. When the gas is generated in the container 3a due to abnormality of the unit cell 3 and the internal pressure of the container 3a rises to a predetermined value or more, the safety valve 3i is opened and releases the gas in the container 3a. Reduce internal pressure. In addition, as a valve provided in the container 3a, a relief valve may be used, for example.

  In the present embodiment, as an example, as shown in FIG. 2, the plurality of single cells 3 are arranged in the housing 2 so as to overlap in the thickness direction. The plurality of single cells 3 are arranged in the housing 2 so as to overlap the end wall 2c. The plurality of single cells 3 are arranged at intervals. The unit cell 3 penetrates the partition wall 2e. Specifically, the partition wall 2e is provided with an opening 2i (opening, hole, FIG. 5) corresponding to each unit cell 3, and the container 3a of the unit cell 3 is inserted through the opening 2i. The end 3h of the unit cell 3 including the bottom wall 3d is accommodated in the accommodating part 25a, and the end 3g of the unit cell 3 provided with the positive electrode part 3b and the negative electrode part 3c is accommodated in the accommodating part 25b. Yes.

  Further, in the present embodiment, as shown in FIGS. 2 and 5, as an example, the accommodating portion 25 b includes the conductive member 4 (bus bar, connection member), the positive electrode portion 31 (FIG. 5), the negative electrode portion 32, The monitoring device 33 (electrical component, substrate device, substrate unit) is accommodated.

  The conductive member 4 is electrically connected to the positive electrode portion 3b and the negative electrode portion 3c of the plurality of single cells 3. The unit cells 3 are connected in series or in parallel via the conductive member 4. In FIG. 2 and the like, there are two conductive members 4 electrically connected to the positive electrode portions 3b of the plurality of single cells 3 and conductive members 4 electrically connected to the negative electrode portions 3c of the plurality of single cells 3. An example in which a plurality of single cells 3 are connected in parallel by one conductive member 4 is shown. As an example, the conductive member 4 is made of a conductive metal material. The conductive member 4 is coupled (bonded, connected, connected) to the positive electrode portion 3b and the negative electrode portion 3c by a fixing tool (for example, a screw or the like), welding, welding, adhesive, or the like (not shown).

  The positive electrode part 31 (electrode part) and the negative electrode part 32 (electrode part) are accommodated in the accommodating part 25b as an example. The positive electrode part 31 (electrode part) is connected to the positive electrode part 3 b (electrode part) of the single battery 3, and the negative electrode part 32 is connected to the negative electrode part 3 c of the single battery 3. In the present embodiment, as an example, the positive electrode portion 31 is connected to the positive electrode portion 3b of the unit cell 3 via one conductive member 4, and the negative electrode portion 32 is connected to the other conductive member 4 via It is connected to the negative electrode portion 3 c of the unit cell 3.

  As an example, the monitoring device 33 is electrically connected to the cell 3, monitors the voltage of the assembled battery 1, and transmits the voltage or the like (monitoring result) to a higher-level device. As an example, the monitoring device 33 is fixed to the partition wall 2e (housing 2) by a fixing unit (not shown) or the like. This fixing | fixed part contains a screw | thread, a boss | hub, etc. as an example. As an example, the monitoring device 33 is electrically connected to the positive electrode portion 3b and the negative electrode portion 3c of the unit cell 3 via a wiring (not shown), and thus the voltage of the assembled battery 1 can be monitored. ing. As an example, the monitoring device 33 includes a substrate and an electrical component mounted on the substrate. Further, the monitoring device 33 is provided with a connection unit 34 (FIG. 5), and the monitoring device 33 communicates with a host device via the connection unit 34. The connection unit 34 includes, as an example, one or a plurality of connectors, and can be connected to one or a plurality of devices.

  In the present embodiment, as an example, as shown in FIGS. 2 and 5, the housing portion 25 b is provided with an insulating cover portion 5. The cover part 5 is comprised by the insulating resin material put into the accommodating part 25b as an example. The resin material has thermoplasticity as an example. In addition, the resin material may be, for example, ultraviolet (UV) curable, curable by mixing two liquids, and moisture curable, and ultraviolet curable is particularly effective.

  For example, the cover 5 includes a portion 3j (accommodated portion) accommodated in the second accommodating portion 25b including the positive electrode portion 3b and the negative electrode portion 3c of the unit cell 3, the conductive member 4, and the monitoring device 33. And covering (covering, sealing). The part 3j of the unit cell 3 corresponds to a part of the unit cell 3 including the electrode portions (the positive electrode unit 3b and the negative electrode unit 3c) in the unit cell 3. The cover 5 also covers a wiring (not shown) that electrically connects the monitoring device 33 and the unit cell. The portion 3j of the unit cell 3, the conductive member 4, and the monitoring device 33 are buried in the cover 5 with the accommodating portion 25b. The cover 5 covers a part of the positive electrode part 31 and a part of the negative electrode part 32 in a state where the end part 31 a of the positive electrode part 31 and the end part 32 a of the negative electrode part 32 are exposed. . Thereby, a conductive member, wiring, etc. can be connected to the positive electrode part 31 and the negative electrode part 32. Further, the cover 5 covers a part of the connection part 34 in a state where the mounting part 34 a in the connection part 34 is exposed. Thereby, another connector can be attached to the attachment portion 34a.

  In the present embodiment, as an example, in a state where the unit cell 3, the conductive member 4, the monitoring device 33, and the like are assembled to the housing 2, the molten resin material is poured into the accommodating portion 25 b of the dish-shaped member 22 ( Filled). And the cover part 5 is formed when the said resin material hardens | cures in the state which covered the cell 3, the electrically-conductive member 4, and the monitoring apparatus 33 grade | etc.,. At this time, the dish-shaped member 22 functions as a receiving member (receiving tray) that receives the resin material. At this time, the resin material constituting the cover 5 preferably has a lower melting point than the resin material constituting the housing 2. Thereby, when the molten resin material which comprises the cover part 5 is poured into the accommodating part 25b, it can suppress that the housing | casing 2 fuse | melts. In the present embodiment, the melting point is higher in the order of the resin material constituting the cover 5, the resin material constituting the dish-like member 22, and the resin material constituting the case 21. Moreover, the resin material which comprises the cover part 5, the resin material which comprises the plate-shaped member 22, and the resin material which comprises the case 21 may be a mixing member. In this case, the softening point (thermal softening point, softening start temperature) is higher in the order of the resin material constituting the cover 5, the resin material constituting the dish-like member 22, and the resin material constituting the case 21. The mixing member is, for example, modified polyphenylene ether (PPE). As an example, the cover 5 can be formed by potting.

  The cover 5 may be a film that covers the surface (outer surface) of the unit cell 3, the conductive member 4, the monitoring device 33, and the like. In this case, as an example, the assembled battery 1 (FIG. 3) in a state where the cell 3, the conductive member 4, and the monitoring device 33 are exposed from the housing 2 in the molten resin material stored in the resin storage container. 3 so that the molten resin material adheres to the surfaces of the unit cell 3, the conductive member 4, and the monitoring device 33. Thereafter, the assembled battery 1 is pulled out from the resin storage container, and the resin material attached to the surfaces of the unit cell 3, the conductive member 4, and the monitoring device 33 is cooled and solidified. Thereby, the film-shaped cover part 5 is formed. At this time, as an example, the resin material is prevented from adhering to the end portion 31 a of the positive electrode portion 31, the end portion 32 a of the negative electrode portion 32, and the mounting portion 34 a of the connection portion 34.

  As an example, as shown in FIG. 6, when an external force F (impact) is applied from the outside to the assembled battery 1 having the above configuration, the safety valve 3 i (FIG. 4) opens, and the inside of the container 3 a of the unit cell 3. The electrolyte and gas may be ejected out of the container 3a. In this case, the ejected electrolyte and gas are discharged out of the assembled battery 1 through a minute gap between the cover 5 and the housing 2 as an example. Here, if the ejected electrolyte or gas enters between conductive parts (positive electrode part 3b, negative electrode part 3c, conductive member 4 and the like) separated from each other, there is a possibility that a spark or a short circuit may occur. As described above, in the present embodiment, the insulating cover 5 covers the portion 3j of the unit cell 3 including the positive electrode portion 3b and the negative electrode portion 3c and the conductive member 4, and thus, mutually. Filling between the separated conductive parts (positive electrode part 3b, negative electrode part 3c, conductive member 4 and the like) with electrolyte or gas is suppressed, and the occurrence of sparks and short circuits is suppressed. The conductive parts spaced apart from each other are, for example, the positive electrode part 3b and the negative electrode part 3c.

  As an example, as shown in FIG. 7, dew condensation 40 may occur in the assembled battery 1 due to a sudden change in the external ambient temperature. In this case, since the insulating cover 5 covers the portion 3j of the unit cell 3 including the positive electrode portion 3b and the negative electrode portion 3c and the conductive member 4, the conductive portions (positive electrode) separated from each other. Connection between the portion 3b, the negative electrode portion 3c, the conductive member 4 and the like) by the dew condensation 40 is suppressed, and the occurrence of sparks and short circuits is suppressed.

  As described above, in the present embodiment, the insulating cover 5 covers the portion 3j of the unit cell 3 including the positive electrode portion 3b and the negative electrode portion 3c, and the conductive member 4. Therefore, according to this embodiment, it is possible to suppress the occurrence of sparks and short circuits between the conductive parts (positive electrode part 3b, negative electrode part 3c, conductive member 4 and the like) separated from each other by the cover part 5. it can.

  Further, in the present embodiment, the insulating cover 5 covers the portion 3j of the unit cell 3 including the positive electrode portion 3b and the negative electrode portion 3c and the conductive member 4 accommodated in the second accommodating portion 25b. Yes. Therefore, according to the present embodiment, the cover 5 can be made smaller (less resin material) than the case where the cover covers the entire unit cell and the conductive member. Can be formed in a short time. In this embodiment, since the partition 2e is provided in the housing 2, when the cover 5 is formed, for example, the molten material constituting the cover 5 moves from the storage portion 25b to the storage portion 25a. This can be suppressed by the partition wall 2e.

  Moreover, in this embodiment, as an example, the part 3j of the single cell 3 and the conductive member 4 are embedded in the cover part 5 by the second housing part 25b. Therefore, the part 3j of the single battery 3 is covered by the cover part 5. And the conductive member 4 can be protected.

  In the present embodiment, the cover 5 covers the monitoring device 33 that is electrically connected to the unit cell 3. Therefore, according to the present embodiment, the cover 5 causes a spark in the monitoring device 33 or between the monitoring device 33 and other components (positive electrode portion 3b, negative electrode portion 3c, conductive member 4). Generation | occurrence | production of a short circuit can be suppressed.

Second Embodiment
In this embodiment, as shown in FIGS. 8 and 9, the unit cell 1 is provided in the container 3 a and the container 3 a as in the first embodiment, and the container 3 a is removed by the pressure increase in the container 3 a. And a safety valve 3i to be opened. The cover 5 covers the safety valve 3i . A concave portion 5c is provided in a portion of the cover portion 5 that overlaps the safety valve 3i. Thereby, the thickness of the first portion 5 a covering the safety valve 3 i in the cover 5 is thinner than the periphery 5 b of the first portion 5 a in the cover 5. In addition, the thickness of the 1st part 5a and the thickness of the circumference | surroundings 5b are the thickness in the direction shown by the arrow Z in FIG. 9, as an example.

  In the above configuration, as an example, when the safety valve 3i is opened and the gas in the container 3a is released to the outside of the container 3a, the first portion 5a of the cover 5 is broken by the pressure of the released gas, and this breakage occurs. Gas is released from the affected area. Therefore, the gas released from the safety valve 3i can be released to the outside of the assembled battery 1 satisfactorily.

<Modification>
In this modification, as shown in FIG. 10, an opening 5 d that exposes the safety valve 3 i is provided in the cover 5 instead of the recess 5 c. In this case, for example, a cylindrical member surrounding the safety valve 3i may be provided on the top wall 3e of the unit cell 3, and the inside of the cylindrical member may be the opening 5d.

  In the above configuration, as an example, when the safety valve 3i is opened and the gas in the container 3a is released to the outside of the container 3a, the released gas is released through the opening 5d. Therefore, the gas released from the safety valve 3i can be released out of the assembled battery 1 satisfactorily.

<Third Embodiment>
In the present embodiment, as shown in FIG. 11, the unit cell 1 is provided in the container 3 a and the container 3 a as in the first embodiment, and opens the container 3 a by increasing the pressure in the container 3 a. And a safety valve 3i. In the present embodiment, the safety valve 3i is provided on the peripheral wall 3f of the container 3a of the unit cell 3 as an example. At this time, it is preferable that the safety valve 3i is provided at a position higher than the level of the electrolytic solution in the container 3a. And the safety valve 3i is located in the accommodating part 25a. Moreover, in this embodiment, the housing | casing 2 is provided with the opening part 2k (2nd opening part) which connected the inside and outside of the accommodating part 25a. The opening 2k is provided in the side wall 2b of the housing 2 as an example.

  In the above configuration, as an example, when the safety valve 3i is opened and the gas in the container 3a is released to the outside of the container 3a, the released gas is released through the opening 2k. Therefore, the gas released from the safety valve 3i can be released out of the assembled battery 1 satisfactorily.

<Fourth embodiment>
In this embodiment, as an example, the storage battery device A (power supply device, battery pack, battery cooling structure) shown in FIG. 12 and FIG. 13 incorporates the assembled battery 1 (battery, see FIG. 13). As an example, a plurality of assembled batteries 1 are provided. The plurality of assembled batteries 1 are connected (electrically connected) in series or in parallel. In addition, in FIG. 13, the example in which the some assembled battery 1 was connected in series is shown as an example. Moreover, in FIG. 13, the assembled battery 1 is shown schematically.

  The assembled battery 1 is accommodated in a container 100 (a housing, a container, and a housing part). The container 100 is filled with an insulating liquid 200 (insulating liquid, insulating medium). That is, the container 100 stores the liquid 200. Each assembled battery 1 is immersed (immersed) in the liquid 200 in the container 100. As the liquid 200, for example, insulating oil, fluorine-based inert liquid, or the like can be used.

  The container 100 has a substantially rectangular parallelepiped appearance as an example. In the present embodiment, as an example, the container 100 has a plurality of wall portions (walls) such as a bottom wall 100a, a side wall 100b, an end wall 100c, and a top wall 100d. The bottom wall 100a (wall portion) is formed in a quadrangular (for example, rectangular) plate shape. The side wall 100b (wall portion) is formed in a quadrangular (for example, rectangular) plate shape. Further, the side wall 100b is connected to an end portion in the longitudinal direction of the bottom wall 100a, and extends along a direction crossing the bottom wall 100a (a direction orthogonal to the present embodiment as an example). The end wall 100c (wall portion) is formed in a quadrangular (for example, rectangular) plate shape, and is connected to the short-side end of the bottom wall 100a. Further, the end wall 100c extends along a direction crossing the bottom wall 100a (in the present embodiment, a direction orthogonal to the example). The side wall 100b is connected to the adjacent end wall 100c. The top wall 100d (wall portion) is formed in a quadrangular (for example, rectangular) plate shape. The top wall 100d is connected to the end portions of the side wall 100b and the end wall 100c, and extends along a direction crossing the side wall 100b and the end wall 100c (in the present embodiment, a direction orthogonal to the example). The bottom wall 100a and the top wall 100d are arranged side by side (in the present embodiment, in parallel as an example) with their inner surfaces (inner surfaces of the container 100) facing each other (facing each other). The two side walls 100b are arranged side by side (in parallel with each other as an example in the present embodiment) in a state where their inner surfaces face (oppose) each other. In addition, the two end walls 100c are arranged side by side (in the present embodiment, in parallel as an example) with their inner surfaces facing (opposed).

  The container 100 is made of a metal material, an insulating synthetic resin material, or the like. In the present embodiment, as an example, the container 100 is configured as a combination of a plurality of members (the container part 101 and the lid part 102 in the present embodiment). The container part 101 (member, container, container member, main body part) includes a bottom wall 100a, a side wall 100b, and an end wall 100c. The container portion 101 is provided with a concave (cuboid) chamber 100e (a storage chamber, a storage portion, a recess) in which the assembled battery 1 can be inserted (inserted / removed). The chamber 100e is surrounded by a bottom wall 100a, a side wall 100b, an end wall 100c, and the like. An opening 100e2 into which the assembled battery 1 can be inserted (inserted / removed) is provided on the upper surface of the chamber 100e. The container 200 (chamber 100e) contains the liquid 200. The lid 102 (member, lid, lid member) includes a top wall 100d. The lid part 102 is attached to the container part 101 and closes the opening part 100e2.

  In the present embodiment, as an example, as shown in FIG. 13, the container 100 has a projecting portion 100 f in which the peripheral portion of the top wall 100 d projects outward in a flange shape from the outer surface of the side wall 100 b. . The overhang portion 100f has an upper wall 100g (wall portion) and a lower wall 100h (wall portion). The upper wall 100g is a peripheral portion of the top wall 100d of the lid portion 102. The lower wall 100h projects from the end of the side wall 100b of the container portion 101 on the lid portion 102 side so as to face the upper wall 100g. In the lower wall 100h, an annular recess 100h1 (a space, a storage chamber, a storage portion) is formed. In the present embodiment, as an example, the seal member 120 is accommodated in the recess 100h1. The container part 101 and the cover part 102 are couple | bonded (fixed) with the fixing tool (for example, screw etc.) which is not illustrated, an adhesive agent etc. as an example. In the present embodiment, as an example, the container portion 101 and the lid portion 102 are fixed by a fixture (for example, a screw), and the lid portion 102 is detachable from the container portion 101. In the present embodiment, as an example, the upper wall 100g and the lower wall 100h of the projecting portion 100f are fixed by a fixture. And the sealing performance (airtightness, liquid tightness) between the container part 101 and the cover part 102 is maintained (secured) by the sealing member 120.

  As an example, the bottom wall 100a of the container unit 101 is provided with a discharge port 100i (opening, opening). The discharge port 100i communicates the inside and outside of the container part 101 (chamber 100e). The discharge port 100i is closed by a closing member 103 (lid portion). The closing member 103 is detachably attached to the bottom wall 100a with, for example, screws. By removing the closing member 103 from the bottom wall 100a, the discharge port 100i is opened, and the liquid 200 in the container 101 (chamber 100e) is discharged from the discharge port 100i.

  For example, the container unit 101 is provided with an inspection unit 100j. As an example, the inspection part 100j protrudes from one side wall 100b of the pair of side walls 100b. The inspection unit 100j is provided with an inspection port 100k (opening, opening) that opens upward, and the inspection port 100k communicates the inside and outside of the container unit 101 (chamber 100e). The inspection port 100k is closed by a closing member 104 (lid portion, service valve). The closing member 104 is detachably attached to the inspection unit 100j with, for example, screws. By removing the blocking member 104 from the inspection unit 100j, the inspection port 100k is opened, and the inspection of the container unit 101 (the chamber 100e) can be performed. As an example, an inspection rod (not shown) is inserted into the container 101 from the inspection port 100k and then pulled out, and the liquid 200 attached to the inspection rod is observed to check the state and amount of the liquid 200. sell. It is also possible to inject the liquid 200 into the container part 101 from the inspection port 100k. Therefore, the inspection port 100k can also be called a liquid injection port.

  As an example, the container unit 101 includes a level switch 105 (first level switch, first liquid detection sensor, first sensor, sensor, upper limit sensor) and level switch 106 (second level switch, second liquid detection). Sensor, second sensor, sensor, lower limit sensor) and pressure sensor 107 (third sensor, sensor) are provided. The level switches 105 and 106 detect the liquid 200 (presence / absence). The pressure sensor 107 detects the pressure in the container unit 101 (pressure of the liquid 200).

  For example, the level switches 105 and 106 and the pressure sensor 107 are provided on the other side wall 100b of the pair of side walls 100b. That is, the level switches 105 and 106 and the pressure sensor 107 are provided as an example on the side wall 100b on which the inspection unit 100j is not provided. The level switches 105 and 106 and the pressure sensor 107 are provided so as to penetrate the side wall 100 b, and their tip portions (sensor portion, detection portion) are located in the container portion 101. As an example, the level switch 105 is positioned at the upper end of the container unit 101, the level switch 106 is positioned below the level switch 105, and the pressure sensor 107 is positioned below the level switch 106. In the present embodiment, as an example, in a state where a specified amount (first specified amount) of liquid 200 is placed in the container portion 101, the container portion 101 has a gas 300 (gas layer, air, gas) above the liquid 200. ) Exists. In this state, the level switch 105 is exposed to the gas 300 without being immersed in the liquid 200, and the level switch 106 and the pressure sensor 107 are immersed in the liquid 200.

  The lid portion 102 is provided with an attachment portion 108 (attachment member, hanging portion, hanging member, holding portion, holding member, frame) in which the assembled battery 1 is attached to the lid portion 102. As an example, the attachment portion 108 is attached to the lid portion 102 in a suspended state. As an example, the attachment portion 108 includes a pair of arm portions 108a (first part, side portion, wall portion) and a bottom portion 108b (bottom wall portion, wall portion) in which the lower ends of the pair of arm portions 108a are connected to each other. have. As an example, a pair of overhang portions 108c (fixed portions) is provided at the upper end portion of each arm portion 108a. The pair of overhanging portions 108 c extend from the respective arm portions 108 a along the lower surface 102 a (inner surface) of the lid portion 102 in a direction away from each other. As an example, these overhang portions 108c are detachably fixed to the lid portion 102 by a fixing tool 116 (screw).

  The attachment portion 108 supports the plurality of assembled batteries 1. As an example, the plurality of assembled batteries 1 are placed on the bottom portion 108b and are coupled to the attachment portion 108 by a fixture (for example, a screw or the like), an adhesive, or the like (not shown). The assembled battery 1 is supported by the mounting portion 108 so that the top wall 2d of the housing 2 faces the end wall 100c of the container 100. The assembled battery 1 supported by the attachment portion 108 is separated from the inner surface 101 a of the container portion 101. Specifically, the assembled battery 1 is separated from the bottom surface 101b and the peripheral surface 101c constituting the inner surface 101a. The bottom surface 101b is constituted by the inner surface of the bottom wall 100a, and the peripheral surface 101c is constituted by the inner surface of the side wall 100b and the inner surface of the end wall 100c. The liquid 200 exists between the assembled battery 1 and the inner surface 101a (the bottom surface 101b, the peripheral surface 101c). For example, the attachment portion 108 is made of a metal material or an insulating material (synthetic resin or the like). The plurality of assembled batteries 1 supported by the attachment portion 108 are, as an example, entirely positioned below the liquid level 200 a of the liquid 200. Moreover, the some assembled battery 1 supported by the attaching part 108 is connected in series through the electrically-conductive member 109 (connection member) as an example. For example, the conductive member 109 is made of a conductive metal material.

  As an example, the lid portion 102 is provided with a positive electrode portion 110 (electrode portion) and a negative electrode portion 111 (electrode portion). The positive electrode portion 110 is connected to the positive electrode portion 31 of a certain assembled battery 1 among the plurality of assembled batteries 1 via the conductive member 109, and the negative electrode portion 111 is the other of the plurality of assembled batteries 1. The battery assembly 1 is connected to the negative electrode portion 32 of the assembled battery 1 via the conductive member 109. The positive electrode unit 110, the negative electrode unit 111, and the plurality of assembled batteries 1 are connected (electrically connected) via the conductive member 109, and the electric circuit 112 (first electric circuit, circuit, first circuit) is connected. It is composed. That is, the electric circuit 112 includes the assembled battery 1 and the electrode portions (the positive electrode portion 110 and the negative electrode portion 111). The electric circuit 112 is provided with a shut-off device 113 (service plug). As an example, the blocking device 113 is provided between the positive electrode portion 110 of one assembled battery 1 and the negative electrode portion 111 of the other assembled battery 1 of the adjacent assembled batteries 1. The shut-off device 113 is normally connected to the electric circuit 112, but shuts off the electric circuit 112 by receiving a predetermined operation. Thereby, the energization of the electric circuit 112 is interrupted.

  The positive electrode portion 110 and the negative electrode portion 111 are electrically connected to the assembled battery 1 and exposed from the housing body 100. The positive electrode portion 110 and the negative electrode portion 111 are provided on a closing member 114 (lid portion, lid member). The closing member 114 closes an opening 102 b (opening, insertion hole) provided in the lid 102. An annular recess 102c (space, accommodation chamber, accommodation portion) surrounding the opening 102b is formed at the peripheral edge of the opening 102b of the lid 102. In the present embodiment, as an example, the sealing member 115 is accommodated in the recess 102c. The closing member 114 is fixed to the lid 102 by a screw as an example, and the closing member 114 is detachable from the lid 102. The sealing member 115 maintains (ensures) the sealing performance (air tightness, liquid tightness) between the closing member 114 and the lid 102.

  As an example, the lid 102 is provided with a management device 117 (first electrical component, substrate device, first substrate device). The management device 117 is configured by mounting electrical components such as a CPU 51 (see FIG. 14) on a board. The management device 117 controls and manages the monitoring device 33 (second electrical component, board device, second board device, see FIG. 14) provided in each assembled battery 1. The management device 117 is coupled (fixed) to a support portion 102e provided on the upper surface 102d (outer surface) of the lid portion 102 by a fixture (for example, a screw) not shown or an adhesive. The management device 117 is electrically connected to each assembled battery 1. The management device 117 is connected to the monitoring device 33 provided in the assembled battery 1 via the wiring 118 (signal line, electric wire, cable) accommodated in the container 100. The wiring 118 is connected to the connection portion 34 (not shown in FIG. 13 but refer to FIG. 1) of the monitoring device 33. The wiring 118 is connected to the management device 117 via the connector 119. The connector 119 has a waterproof (oilproof) function. The connector 119 is inserted into an opening 102f (opening, insertion hole) provided in the lid 102 (container 100) to close the opening 102f. The connector 119 electrically connects the wiring 118 and the management device 117 and restricts the liquid 200 from passing through the opening 102f. Therefore, the connector 119 prevents the liquid 200 from leaking from the opening 102f. As an example, the monitoring device 33 provided in each assembled battery 1 is connected in series by a wiring 118. Each wiring 118 is connected to the connection unit 34 of the monitoring device 33 as an example.

  Moreover, the cover part 102 of the container 100 is provided with the relief valve 121 (valve, 1st valve) and the safety valve 122 (valve, 2nd valve) as an example. The relief valve 121 and the safety valve 122 open the container 100 due to an increase in pressure in the container 100. Specifically, the safety valve 122 opens the container 100 when the lid 102 is cut off by a thin portion 122a (fragile part) provided in the lid 102 due to an increase in pressure of the container 100. As an example, the relief valve 121 is closed when the pressure in the container 100 is equal to or lower than the first pressure, and is opened when the pressure in the container 100 exceeds the first pressure. On the other hand, the safety valve 122 is closed when the pressure in the container 100 is equal to or lower than the second pressure, and is opened when the pressure in the container 100 exceeds the second pressure. The second pressure is higher than the first pressure. With the above configuration, when the pressure of the container 100 increases and the pressure in the container 100 exceeds the first pressure, the relief valve 121 is opened, and as an example, the gas 300 goes out of the container 100. Further, as an example, when the pressure of the container 100 suddenly increases and the pressure in the container 100 momentarily exceeds the first pressure and the second pressure, the relief valve 121 is opened and the safety valve 122 is opened, As an example, the gas 300 goes out of the container 100.

  As an example, the storage battery device A includes a CPU (Central Processing Unit) 51, a ROM (Read Only Memory) 52, and a RAM (Random Access Memory) 53, as shown in FIG. The CPU 51, ROM 52, and RAM 53 are connected via a bus line 54 such as an address bus and a data bus to constitute a computer. The CPU 51, ROM 52, and RAM 53 are mounted on the board of the management apparatus 117 and constitute a part of the management apparatus 117. The CPU 51 is an example of a control unit.

  The CPU 51 controls each part of the storage battery device A by executing various computer-readable programs stored in the ROM 52. The ROM 52 stores various programs executed by the CPU 51 and various data. The RAM 53 temporarily stores various programs executed by the CPU 51 and stores various data in a rewritable manner.

  In addition, level switches 105 and 106, a pressure sensor 107, and a monitoring device 33 are connected to the CPU 51 via a bus line 54. In addition, a communication interface (I / F in the drawing) 131 and a notification unit 132 as a communication unit are connected to the CPU 51 via the bus line 54. The communication interface 131 performs communication with an external device. The notification unit 132 includes, for example, a display unit, an audio output unit, and the like, and notifies (outputs) various types of information. The display unit is, for example, a liquid crystal display or an LED (Light Emitting Diode). The audio output unit is, for example, a speaker or a buzzer. As an example, the notification unit 132 is provided on the lid 102 of the container 100 and is exposed to the outside of the container 100.

  Next, an example of the management process among various processes performed by the CPU 51 according to the program will be described. In the management process, when the level switch 105 detects the liquid 200, the CPU 51 causes the notification unit 132 to notify that the liquid 200 is detected by the level switch 105. This notification is given, for example, when the user injects the liquid 200 too much when the user injects the liquid 200 from the inspection port 100k. Further, when the level switch 106 detects the liquid 200, the CPU 51 notifies the notification unit 132 that the level 200 has detected the liquid 200. This notification is given, for example, when the amount of the liquid 200 decreases due to, for example, the liquid 200 leaking from the container 100 for some reason. In addition, when the pressure detected by the pressure sensor 107 exceeds the specified pressure, the CPU 51 causes the notification unit 132 to notify that the pressure has exceeded the specified pressure. This notification is given, for example, when the pressure in the container 100 is increased for some reason.

  As described above, in the present embodiment, the assembled battery 1 is immersed in the insulating liquid 200 in the container 100. Therefore, according to the present embodiment, as an example, heat can be more efficiently transferred between the assembled battery 1 and the container 100 by the liquid 200. That is, as an example, when the temperature of the assembled battery 1 rises due to self-heating during charging and discharging and the heat of the assembled battery 1 is transmitted to the liquid 200, the temperature of the liquid 200 in the vicinity of the assembled battery 1 rises, The density decreases with respect to the liquid 200 in the region, buoyancy occurs, and convection occurs. Then, the heated liquid 200 in the vicinity of the assembled battery 1 moves above the container 100 (in the direction of the lid 102), and the moved liquid 200 moves to the side of the container 100 (side wall 100b and end wall 100c). And the heat of the assembled battery 1 is transmitted to the wall portion or the lid portion 102 of the container 100. Therefore, since the heat of the assembled battery 1 is transmitted to the housing body 100 by the liquid 200 on a wide surface, the temperature of the housing body 100 rises and a large amount of heat can be released to the outside on a wide surface. On the other hand, the liquid 200 in another region flows into the vicinity of the assembled battery 1 where the liquid 200 has moved, and the temperature of the liquid 200 rises again due to the heat of the assembled battery 1, and the liquid 200 that has flowed in is located above the container 100 ( (In the direction of the lid 102). By repeating this, the liquid 200 continuously convects and diffuses inside the container 100, so that the heat of the assembled battery 1 is efficiently transferred to the container 100 by the liquid 200, and the heat of the assembled battery 1 is transferred from the container 100 to the outside. Can be released. That is, the assembled battery 1 can be cooled. Thereby, the favorable output characteristic of the assembled battery 1 is obtained.

  Moreover, in this embodiment, since the gas 300 exists in the container 100, the liquid 200 is easy to be stirred. That is, as an example, when the storage battery device A of the present embodiment is used for a moving body such as an automobile, the liquid 200 is swung and stirred in the container 100 due to vibration during driving of the automobile or acceleration due to decelerating speed. By this stirring, the heated liquid 200 reaches the wall portion or the lid portion 102 of the container 100 more quickly, and the heat of the assembled battery 1 is quickly transmitted to the container 100. Furthermore, since the liquid 200 having a relatively low temperature can flow into the vicinity of the assembled battery 1 more quickly by stirring, an effect of efficiently transferring the heat of the assembled battery 1 to the liquid 200 is produced.

  In this embodiment, since the assembled battery 1 is immersed in the insulating liquid 200, the assembled battery 1 is protected and insulated by the insulating liquid 200, and the assembled battery 1 is rusted or short-circuited. Can be suppressed. Further, in this embodiment, heat transfer is performed by immersing the assembled battery 1 in the insulating liquid 200, and therefore, compared with the case where the assembled battery 1 is cooled using, for example, a water cooling jacket, the flow path piping and the flow path Since a connection part can be made unnecessary, the storage battery apparatus A can be made into a simple structure. Therefore, the assembly property of the storage battery device A can be improved and the cost can be reduced, and the structural safety can be improved. Further, in this embodiment, heat transfer is performed by immersing the assembled battery 1 in the insulating liquid 200, so that the heat capacity of the liquid 200 is extremely large compared to air cooling, and the heat of the assembled battery 1 is large in comparison with air cooling. Therefore, the assembled battery 1 can be efficiently cooled. In the cooling in the case of using a conductive liquid such as water cooling, if the assembled battery 1 is directly immersed in the liquid, the assembled battery 1 is short-circuited. Therefore, it is necessary to isolate the liquid from the assembled battery 1 by a jacket or the like.

  In the present embodiment, since the plurality of assembled batteries 1 are immersed in the insulating liquid 200, the heat of the plurality of assembled batteries 1 is shortened by mutual convection, diffusion, stirring, and heat transport of the insulating liquid 200 described above. Heat can be exchanged over time, and variations in cooling and heating among the plurality of assembled batteries 1 can be suppressed. Therefore, the dispersion | variation in the lifetime between the some assembled batteries 1 can be suppressed, and the storage battery apparatus A can be made long-life compared with the past.

  In this embodiment, the container 100 includes a container part 101 and a lid part 102. The container part 101 is provided with an opening 100e2 into which the assembled battery 1 can be inserted, and the container part 101 is filled with the liquid 200. The lid part 102 is attached to the container part 101 and closes the opening part 100e2. The assembled battery 1 is attached to the lid portion 102 by the attachment portion 108. Therefore, since the assembled battery 1 is positioned in the container part 101 by attaching the lid part 102 to the container part 101, the storage battery device A can be manufactured relatively easily. At this time, the liquid 200 may be previously placed in the container portion 101 from the opening 100e2 or the inspection port 100k before attaching the lid portion 102, or after the lid portion 102 is attached, the liquid 200 is transferred from the inspection port 100k to the container portion 101. You may put it in.

  In the present embodiment, the lid portion 102 is provided with the positive electrode portion 110, the negative electrode portion 111, the cutoff device 113, the management device 117, the relief valve 121, and the like in a concentrated manner. Further, the assembled battery 1 is attached to and supported by the attachment portion 108, the attachment portion 108 is detachably fixed to the lid portion 102 via the overhanging portion 108 c, and the lid portion 102 is attached to the container portion 101. Therefore, as an example, the container part 101 in which the positive electrode part 110, the negative electrode part 111, etc. are disposed, the lid part 102 on which the assembled battery 1 is fixed via the attachment part 108 is suspended with a wire, and the liquid 200 is immersed therein. Can be placed and fixed against. Therefore, the storage battery device A can be manufactured relatively easily.

  In the present embodiment, the assembled battery 1 is separated from the inner surface 101a (the bottom surface 101b and the peripheral surface 101c) of the container part 101. Therefore, since the liquid 200 exists between the inner surface 101a and the assembled battery 1, the liquid 200 easily flows into the vicinity of the assembled battery 1 when the temperature of the assembled battery 1 rises due to the above-described self-heating during charging and discharging. Or by stirring, the heated liquid 200 tends to flow out from the vicinity of the assembled battery 1 and the relatively low temperature liquid 200 flows into the vicinity of the assembled battery 1. Heat can be efficiently transferred between the body 100 (external air).

  Moreover, in this embodiment, the relief valve 121 and the safety valve 122 which open the container 100 by the pressure rise in the container 100 are provided in the container 100. Therefore, when the pressure in the container 100 rises, an excessive pressure rise in the container 100 can be suppressed by the relief valve 121 and the safety valve 122.

<Fifth Embodiment>
In the storage battery device A of the present embodiment, as shown in FIG. 15, a plurality of containers 100A are provided. The containers 100A are stacked on each other. A liquid 200 is placed in each container 100A. A plurality of battery packs 1 are provided and placed in a plurality of containers 100A. That is, each container 100A contains the liquid 200 and the assembled battery 1. The plurality of assembled batteries 1 are connected in series or in parallel. FIG. 15 shows an example in which a plurality of assembled batteries 1 are connected in series. Moreover, in FIG. 15, the assembled battery 1 is shown schematically.

  The container 100A has a substantially rectangular parallelepiped appearance as an example, similar to the container 100 of the fourth embodiment. Moreover, in this embodiment, similarly to the container 100 of the fourth embodiment, as an example, the container 100A includes a plurality of wall portions (walls) such as a bottom wall 100a, a side wall 100b, an end wall 100c, and a top wall 100d. )have. As an example, the container 100A is configured as a combination of a plurality of members (the bottom wall 100a, the side wall 100b, the end wall 100c, and the top wall 100d). Each member (the bottom wall 100a, the side wall 100b, the end wall 100c, and the top wall 100d) is coupled (fixed) by, for example, a fixture (not shown), an adhesive, or the like (not shown). A chamber 100e is formed inside the container 100A. A liquid 200 is placed in the container 100A (the chamber 100e). Further, the container 100A has a partition wall 100p. The partition wall 100p is located between the pair of side walls 100b and connects the bottom wall 100a and the top wall 100d. The interior (chamber 100e) of the container 100A is divided into two chambers 100e2 and 100e3 by a partition wall 100p. A plurality of assembled batteries 1 and the like are accommodated in one chamber 100e2, and a conductive member 109 and the like are accommodated in the other chamber 100e3. The partition wall 100p is provided with a plurality of openings 100p1. The liquid 200 can flow between the two chambers 100e2 and 100e3 through these openings 100p1. A conductive member 109 is inserted into the opening 100p1.

  In this embodiment, as an example, the container 100A includes an overhanging portion 100f in which the peripheral portion of the top wall 100d protrudes outward in a flange shape from the outer surface of the side wall 100b, and the peripheral portion of the bottom wall 100a is the side wall 100b. And an overhanging portion 100m that projects outwardly in a flange shape from the outer surface.

  In the present embodiment, as an example, the insides of the containers 100A adjacent in the vertical direction are communicated with each other by a flow channel 100n (first flow channel). The flow path 100n allows the liquid 200 to flow between the containers 100A. The channel 100n is positioned on the lower side of the opening 100n1 provided on the bottom wall 100a of the container 100A positioned on the upper side among the containers 100A adjacent in the vertical direction and on the container 100A adjacent in the vertical direction. And an opening 100n2 provided in the top wall 100d of the container 100A. As an example, the channel 100n is provided for each of the chambers 100e2 and 100e3. A conductive member 109 constituting the electric circuit 112 is inserted through the flow path 100n.

  Moreover, in this embodiment, the discharge port 100i is provided in the bottom wall 100a of the container 100A located in the lowest position as an example. The discharge port 100i is closed by a closing member 103 (lid portion). By removing the closing member 103 from the bottom wall 100a, the discharge port 100i is opened, and the liquid 200 in each container 100A (chamber 100e) is discharged from the discharge port 100i.

  In the present embodiment, the assembled battery 1 is placed on the bottom wall 100a as the bottom of the container 100A. As an example, the assembled battery 1 is placed on the bottom wall 100a, and a buffer material 135 is provided between the adjacent assembled batteries 1 and between the assembled battery 1 and the partition wall 100p. 135, the side wall 100b, the end wall 100c, and the partition wall 100p are mutually pressed and fixed. The buffer material 135 is, for example, a plate-like rubber or sponge.

  In the present embodiment, as an example, the positive electrode part 110 (electrode part) and the negative electrode part 111 (electrode part) are provided on one side wall 100b of the container 100A positioned at the top. The positive electrode portion 110 is connected to the positive electrode portion 31 of a certain assembled battery 1 among the plurality of assembled batteries 1 via the conductive member 109, and the negative electrode portion 111 is the other of the plurality of assembled batteries 1. The battery assembly 1 is connected to the negative electrode portion 32 of the assembled battery 1 via the conductive member 109. The positive electrode unit 110, the negative electrode unit 111, and the plurality of assembled batteries 1 are connected (electrically connected) via the conductive member 109, and the electric circuit 112 (first electric circuit, circuit, first circuit) is connected. It is composed. Moreover, the interruption | blocking apparatus 113 contained in the electric circuit 112 is provided in one side wall 100b of the container 100A between the lowest and the highest as an example.

  The positive electrode part 110 and the negative electrode part 111 are exposed from the uppermost container 100A. The positive electrode portion 110 and the negative electrode portion 111 are provided on a closing member 114 (lid portion, lid member). The closing member 114 closes the opening 102b provided on the side wall 100b of the uppermost container 100A. An annular recess 102c (a space, a storage chamber, and a storage portion) surrounding the opening 102b is formed at the peripheral edge of the opening 102b. In the present embodiment, as an example, the sealing member 115 is accommodated in the recess 102c. The closing member 114 is fixed to the side wall 100b by a fixing tool (screw) as an example, and the closing member 114 is detachable from the side wall 100b. The sealing member 115 maintains (ensures) the sealing performance (air tightness, liquid tightness) between the closing member 114 and the side wall 100b.

  As an example, a management device 117 (not shown in FIG. 15 but refer to FIG. 13) is provided on the other side wall 100b. The management device 117 controls and manages the monitoring device 33 provided in each assembled battery 1 accommodated in the container 100A in which the management device 117 is provided. The management device 117 is connected to the monitoring device 33 via the wiring 118 accommodated in the container 100A. The wiring 118 is connected to the connection portion 34 (not shown in FIG. 15 but refer to FIG. 1) of the monitoring device 33. The wiring 118 is connected to the management device 117 via the connector 119. The connector 119 is inserted into the opening 102f provided on the other side wall 100b to close the opening 102f. The connector 119 electrically connects the wiring 118 and the management device 117 and restricts the liquid 200 from passing through the opening 102f. Therefore, the connector 119 prevents the liquid 200 from leaking from the opening 102f. The plurality of monitoring devices 33 are connected in series by a wiring 118 as an example. Each wiring 118 is connected to the connection unit 34 of the monitoring device 33 as an example.

  In the present embodiment, as an example, the relief valve 121 is provided on the top wall 100d of the uppermost container 100A, and the safety valve 122 is provided on one side wall 100b of the lowermost container 100A.

  As described above, in the present embodiment, the assembled battery 1 is immersed in the insulating liquid 200 in the container 100A. Therefore, according to this embodiment, the effect similar to 4th Embodiment by having assembled battery 1 immersed in the insulating liquid 200 as an example can be show | played.

<Sixth Embodiment>
In the storage battery device A of the present embodiment, as shown in FIGS. 16 and 17, a plurality of containers 100B are provided. The plurality of containers 100B have a three-dimensional (three-dimensional) arrangement (FIG. 16) in which two-dimensional (two-dimensional) arrangements (FIG. 17) are stacked. Therefore, the storage battery device A includes a plurality of containers 100B stacked on each other. A liquid 200 is placed in each container 100B. Moreover, the assembled battery 1 is provided with two or more, and is put in each container 100B. That is, the liquid 200 and the assembled battery 1 are placed in each container 100B. The plurality of assembled batteries 1 are connected in series or in parallel. 16-18, the assembled battery 1 is schematically shown.

  As an example, the container 100B has a substantially rectangular parallelepiped appearance, as shown in FIGS. In this embodiment, as an example, the container 100B has a plurality of wall portions (walls) such as a bottom wall 100a, a side wall 100b, and an end wall 100c. The container 100B is open upward. A chamber 100e is formed inside the container 100B. A liquid 200 is placed in the container 100B (chamber 100e). Moreover, the opening part 100q is provided in one side wall 100b of the container 100B, and the inside of the container 100B where the side walls 100b face each other is communicated with the opening part 100q.

  Moreover, in this embodiment, the assembled battery 1 is mounted on the bottom wall 100a as a bottom part of the container 100B. As an example, the assembled battery 1 is mounted (fixed) to the bottom wall 100a with a fixing tool (such as a screw) (not shown), an adhesive, or the like while being placed on the bottom wall 100a. In the present embodiment, as an example, the container 100B is placed on the convex portion 100a1 provided on the bottom wall 100a. Moreover, the buffer material 135 is provided between the adjacent assembled batteries 1, and between the assembled battery 1 and the side wall 100b.

  As described above, in the present embodiment, the assembled battery 1 is immersed in the insulating liquid 200 in the container 100B. Therefore, according to this embodiment, the effect similar to 4th Embodiment by having assembled battery 1 immersed in the insulating liquid 200 as an example can be show | played.

<Seventh embodiment>
In the present embodiment, as shown in FIG. 19, the storage battery device A is provided with a circulation cooling unit 500 (circulation unit, cooling unit). In addition, although the example which provided the circulating cooling part 500 in the storage battery apparatus A of 4th Embodiment is demonstrated here, it is not restricted to this, You may provide the circulating cooling part 500 in other embodiment and a modification. . Moreover, in FIG. 19, the assembled battery 1 is shown schematically.

  Circulation cooling unit 500 cools liquid 200 that has flowed out (flowed out) from container 100, and returns cooled liquid 200 to container 100. The circulation cooling unit 500 includes a heat exchanger 503 (radiator) into which the liquid 200 flows (in / out), a fan 504 that generates wind used for cooling the liquid 200 in the heat exchanger 503, and the container 100 and heat. And a pump 502 that circulates the liquid 200 to and from the exchanger 503. For example, the fan 504 blows air toward the heat exchanger 503. The fan 504 blows in a direction different from the container 100 side. The pump 502 is driven by a motor (drive source). The container 100, the pump 502, and the heat exchanger 503 are connected by a pipe 505. A circulation channel 506 is configured by the container 100, the pump 502, the heat exchanger 503, and the pipe 505. When the container 100 is used as a reference (starting point) in the circulation flow path 506, the pump 502 is positioned upstream of the heat exchanger 503 as an example. The pump 502 may be located on the downstream side of the heat exchanger 503.

  In the circulating cooling unit 500, as an example, when the pump 502 is operated, the liquid 200 flowing out from the container 100 passes through the heat exchanger 503 and is returned to the container 100 again. The liquid 200 is cooled by taking heat away from the outside air in the process of passing through the heat exchanger 503. Therefore, the cooled liquid 200 is returned to the container 100, and the assembled battery 1 can be cooled more efficiently. For example, the pump 502 and the fan 504 may be started by a predetermined operation or may be constantly operating.

  The circulation cooling unit 500 is provided with a breather valve 507 and a reservoir tank 508. The breather valve 507 is connected to the circulation flow path 506 by a pipe 505, and the reservoir tank 508 is connected to the breather valve 507 by a pipe 505. The reservoir tank 508 is connected to the container 100 by a flow path 510 (second flow path) and stores the liquid 200. The flow path 510 includes a pipe 505, a breather valve 507, and a circulation flow path 506, and the liquid 200 can flow.

  The breather valve 507 has a pressure valve and a vacuum valve and performs an intake / exhaust operation. The breather valve 507 opens and discharges the liquid 200 in the circulation channel 506 to the reservoir tank 508 when the pressure in the circulation channel 506 (container 100) exceeds a first specified value. The breather valve 507 opens to circulate the liquid 200 in the reservoir tank 508 when the pressure in the circulation flow path 506 (container 100) becomes equal to or lower than a second specified value that is lower than the first specified value. Release into the channel 506. Due to the operation of the breather valve 507, the fluctuation of the pressure in the circulation channel 506 (container 100) is suppressed. Although not shown in FIG. 19, the inspection unit 100 j and the closing member 104 (see FIG. 13) are provided in the container 100 or the circulation channel 506.

  As described above, in the present embodiment, since the liquid 200 is cooled by the circulation cooling unit 500, the assembled battery 1 can be cooled more efficiently.

  For example, when the storage battery device A is mounted on an automobile, the circulation cooling unit 500 may apply (also serve as) a cooling system for an automobile engine.

<Modification>
In the present modification, as shown in FIG. 20, the heat exchanger 503 is positioned facing the container 100, and the fan 504 blows air toward the heat exchanger 503 and the container 100. According to the above configuration, since the wind generated by the fan 504 hits the container 100 in addition to the heat exchanger 503, the container 100 can be cooled. Therefore, since the liquid 200 in the container 100 is further cooled, the assembled battery 1 can be cooled more efficiently.

<Eighth Embodiment>
Although the basic configuration of this embodiment is the same as that of the seventh embodiment, as shown in FIG. 21, the point that the temperature measurement unit 520 is provided in the storage battery device A is different from the seventh embodiment. Different.

  The temperature measurement unit 520 measures the temperature of at least one of the inside of the container 100 (see FIG. 13) and the outside of the container 100. In the present embodiment, the temperature measurement unit 520 measures the temperature inside the container 100. As an example, the temperature measurement unit 520 measures the temperature around (in the vicinity of) the unit cell 3 inside the container 100. The temperature measurement unit 520 includes a temperature sensor 521 (first temperature sensor, sensor) provided in the assembled battery 1 as an example. The temperature sensor 521 is provided corresponding to each unit cell 3. The temperature sensor 521 is provided in the housing 2 or the single battery 3 of the assembled battery 1. In the present embodiment, the unit 2 is provided on the bottom wall 2 a of the housing 2 so as to correspond to each unit cell 3. Each temperature sensor 521 measures the corresponding cell 3 or the ambient temperature of the cell 3. Each temperature sensor 521 is connected to the monitoring device 33 via wiring.

  The temperature sensor 521 is connected to the CPU 51 via the monitoring device 33. Thereby, the detection result of each temperature sensor 521 is input to the CPU 51. The CPU 51 is connected to the fan 504 described in the seventh embodiment and the motor 509 (drive source) that drives the pump 502. The CPU 51 controls the drive of the fan 502, and controls the drive of the pump 502 by controlling the drive of the motor 509.

  The CPU 51 executes the temperature control process by following the program. In the temperature control process, the CPU 51 controls the circulation cooling unit 500 (the pump 502 and the fan 504) using the measurement result of the temperature measurement unit 520. As an example, as shown in FIG. 22, the CPU 51 first acquires the temperature of the assembled battery 1 (step S1). Specifically, the detection result of each temperature sensor 521 is received. Next, CPU51 determines whether the temperature of the assembled battery 1 is more than a regulation value (step S2). As an example, the temperature of the assembled battery 1 is an average value of the detected temperatures of the plurality of temperature sensors 521. Moreover, as another example, the temperature of the assembled battery 1 is the highest temperature or the lowest temperature among the detection temperatures of the plurality of temperature sensors 521. When the temperature sensor 521 is single, the CPU 51 acquires the temperature detected by the temperature sensor 521 as the temperature of the assembled battery 1. When the CPU 51 determines that the temperature of the assembled battery 1 is equal to or higher than the specified value (Yes in Step S2), the CPU 51 starts driving the pump 502 and the fan 504 to operate the pump 502 and the fan 504 (Step S3). At this time, if the pump 502 and the fan 504 are already operating, the CPU 51 continues the operation of the pump 502 and the fan 504. On the other hand, when the CPU 51 determines that the temperature of the assembled battery 1 is not higher than the specified value and lower than the specified value (No in step S2), the driving of the pump 502 and the fan 504 is stopped and the operation of the pump 502 and the fan 504 is performed. Is stopped (step S4). At this time, when the pump 502 and the fan 504 are stopped, the CPU 51 maintains the stopped state of the pump 502 and the fan 504. The CPU 51 repeats the above processing every specified time.

  As described above, in the present embodiment, the CPU 51 controls the circulation cooling unit 500 using the measurement result of the temperature measurement unit 520. Therefore, the temperature of the liquid 200 can be controlled by the CPU 51 to control the temperature of the assembled battery 1.

  Further, in the present embodiment, when the temperature measurement unit 520 measures the temperature inside the container 100 and the measurement result of the temperature measurement unit 520 becomes a specified value or more, the CPU 51 operates the circulation cooling unit 500. Therefore, when the measurement result of the temperature measurement unit 520 becomes equal to or greater than the specified value, the liquid 200 is cooled by the circulation cooling unit 500, and the assembled battery 1 can be further cooled. As an example, the fan 504 may be constantly rotated. In this case, when the measurement result of the temperature measurement unit 520 becomes equal to or greater than the specified value, the CPU 502 starts driving the pump 502 and operates the pump 502.

  In this embodiment, the example in which the temperature sensor 521 is provided for each unit cell 3 has been described. However, the present invention is not limited to this. For example, the temperature sensor 521 may be provided for each assembled battery 1 instead of for each unit cell 3.

<Ninth Embodiment>
The basic configuration of this embodiment is the same as that of the eighth embodiment. However, as shown in FIG. 23, the temperature sensor 521 of the temperature measurement unit 520 is disposed outside the assembled battery 1 inside the container 100. The point provided is different from the eighth embodiment.

  The temperature measurement unit 520 measures the temperature inside the container 100. As an example, the temperature measurement unit 520 measures the temperature of the liquid 200 around (in the vicinity of) the assembled battery 1 inside the container 100 using the temperature sensor 521. The temperature sensor 521 is provided corresponding to each assembled battery 1. The temperature sensor 521 is fixed to the attachment portion 108 as an example. A temperature sensor 521 may be provided between the assembled batteries 1 to measure the temperature of the liquid 200 between the assembled batteries 1.

  In the present embodiment, as shown in FIG. 24, the temperature sensor 521 is connected to the CPU 51 without the monitoring device 33 as an example. Thereby, the detection result of each temperature sensor 521 is input to the CPU 51 without passing through the monitoring device 33.

  The CPU 51 executes the temperature control process by following the program. In the temperature control process, the CPU 51 controls the circulation cooling unit 500 (the pump 502 and the fan 504) using the measurement result of the temperature measurement unit 520. As an example, as shown in FIG. 25, the CPU 51 first acquires the temperature of the liquid 200 (step S1). Specifically, the detection result of each temperature sensor 521 is received. Next, the CPU 51 determines whether the temperature of the liquid 200 is equal to or higher than a specified value (step S2). The temperature of the liquid 200 is, for example, an average value of detection temperatures of the plurality of temperature sensors 521. Further, as another example, the temperature of the liquid 200 is the highest temperature or the lowest temperature among the detected temperatures of the plurality of temperature sensors 521. If the temperature sensor 521 is single, the CPU 51 acquires the temperature detected by the temperature sensor 521 as the temperature of the liquid 200. When the CPU 51 determines that the temperature of the liquid 200 is equal to or higher than the specified value (Yes in step S2), the CPU 51 starts driving the pump 502 and the fan 504 to operate the pump 502 and the fan 504 (step S3). At this time, if the pump 502 and the fan 504 are already operating, the CPU 51 continues the operation of the pump 502 and the fan 504. On the other hand, if the CPU 51 determines that the temperature of the liquid 200 is not equal to or higher than the specified value (No in step S2), the CPU 51 stops driving the pump 502 and the fan 504 and causes the pump 502 and the fan 504 to operate. Stop (step S4). At this time, when the pump 502 and the fan 504 are stopped, the CPU 51 maintains the stopped state of the pump 502 and the fan 504. The CPU 51 repeats the above processing every specified time.

  As described above, in the present embodiment, the CPU 51 controls the circulation cooling unit 500 using the measurement result of the temperature measurement unit 520. Therefore, according to this embodiment, the same effect as that of the eighth embodiment can be obtained.

<Tenth Embodiment>
The basic configuration of the present embodiment is the same as that of the ninth embodiment. However, as shown in FIGS. 26 and 27, the temperature measurement unit 520 includes a temperature sensor 521 (first temperature sensor) as well as a temperature sensor. The point which has the sensor 523 (2nd temperature sensor) differs with respect to 9th Embodiment. FIG. 26 shows an example in which the inspection unit 100j and the closing member 104 are provided in the container 100. However, the inspection unit 100j and the closing member 104 may be provided in the circulation channel 506. Good.

  As shown in FIG. 26, the temperature sensor 523 is provided outside the container 100 and measures the temperature (environment temperature) outside the container 100. As an example, the temperature sensor 523 is fixed to an arm portion 100r (support portion) that protrudes from the side wall 100b of the container 100. The temperature measurement unit 520 measures the temperature inside the container 100 and the temperature outside the container 100. The temperature inside the container 100 is measured by the temperature sensor 521, and the temperature outside the container 100 is measured by the temperature sensor 523. In the present embodiment, the temperature of the liquid 200 inside the container 100 is measured by the temperature sensor 521 as the temperature inside the container 100. Note that the temperature sensor 521 of the eighth embodiment may be used as the temperature sensor 521.

  In the present embodiment, the temperature sensor 523 is connected to the CPU 51 as shown in FIG. Thereby, the detection result of the temperature sensor 523 is input to the CPU 51.

  Here, during the execution of the temperature control process, for example, when clogging or the like occurs in the heat exchanger 503 and the circulating cooling unit 500 malfunctions, the operation of the circulating cooling unit 500 may be stopped. desirable. The temperature of the liquid 200 when the circulation cooling unit 500 malfunctions will be described with reference to FIG. FIG. 28 shows an example of how the outside air temperature T2 changes during the temperature control process and how the temperature T1 of the liquid 200 changes. A temperature T1 of the liquid 200 indicated by a broken line in FIG. 28 indicates a temperature when the circulation cooling unit 500 malfunctions. A temperature T1 of the liquid 200 indicated by a solid line in FIG. Shows the temperature when operating normally. When the circulating cooling unit 500 malfunctions, the temperature T1 of the liquid 200 rises compared to when the circulating cooling unit 500 operates normally. In this case, for example, if the CPU 51 executes the temperature control process using only the outside air temperature T2, it cannot be detected that an operation failure has occurred in the circulation cooling unit 500, and the operation of the circulation cooling unit 500 is stopped. I can't. Therefore, in the present embodiment, the temperature control process is performed using the temperature T1 of the liquid 200 (the temperature inside the container 100) and the outside air temperature T2 (the temperature outside the container 100), so that the circulating cooling unit 500. The quality of the operation can be determined. As an example, the quality of the operation of the circulation cooling unit 500 is determined based on whether or not a value β obtained by subtracting the outside air temperature T2 from the temperature T1 of the liquid 200 is equal to or greater than a specified value α. Below, the temperature control process of this embodiment is demonstrated in detail.

  In the temperature control process, as shown in FIG. 29, the CPU 51 first drives the circulation cooling unit 500 (pump 502 and fan 504) to operate the circulation cooling unit 500 (pump 502 and fan 504) (steps). S11).

  Next, the CPU 51 acquires the temperature T1 and the outside air temperature T2 of the liquid 200 (step S12). Specifically, the detection results of the temperature sensors 521 and 523 are received. Next, the CPU 51 determines whether or not the temperature T1 of the liquid 200 (the temperature inside the container 100) is higher than the specified value α with respect to the outside air temperature T2 (the temperature outside the container) (step S13). That is, the CPU 51 determines whether T1−T2 ≧ α. The temperature of the liquid 200 is, for example, an average value of detection temperatures of the plurality of temperature sensors 521. Further, as another example, the temperature of the liquid 200 is the highest temperature or the lowest temperature among the detected temperatures of the plurality of temperature sensors 521. If the temperature sensor 521 is single, the CPU 51 acquires the temperature detected by the temperature sensor 521 as the temperature of the liquid 200. When the CPU 51 determines that the temperature T1 of the liquid 200 (the temperature inside the container 100) is not higher than the specified value α with respect to the outside air temperature T2 (the temperature outside the container 100) (No in step S13), The operation of circulating cooling unit 500 (pump 502 and fan 504) is continued, and the process returns to step S12. On the other hand, when the CPU 51 determines that the temperature T1 of the liquid 200 (the temperature inside the container 100) is higher than the outside air temperature T2 (the temperature outside the container 100) by a predetermined value α or more (Yes in step S13). Then, the operation of circulation cooling unit 500 (pump 502 and fan 504) is stopped (step S14). At this time, for example, the CPU 51 causes the notification unit 132 to notify that an operation failure (error) of the circulation cooling unit 500 has occurred.

  As described above, in this embodiment, the CPU 51 uses the measured temperature T1 of the liquid 200 (temperature inside the container 100) and the outside air temperature T2 (temperature outside the container 100) to circulate and cool the cooling unit. 500 is controlled. Therefore, the malfunction of the circulating cooling unit 500 can be determined satisfactorily.

  As described above, according to each of the above-described embodiments and modifications, as an example, the spark between the conductive portions (positive electrode portion 3b, negative electrode portion 3c, conductive member 4 and the like) separated from each other by the cover 5 is provided. And occurrence of short circuits can be suppressed.

  As mentioned above, although embodiment and the modification of this invention were illustrated, the said embodiment and modification are an example to the last, Comprising: It is not intending limiting the range of invention. These embodiments and modifications can be implemented in various other forms, and various omissions, replacements, combinations, and changes can be made without departing from the spirit of the invention. These embodiments, modifications, and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof. In addition, the specifications of each component (structure, type, direction, shape, size, length, width, thickness, height, number, arrangement, position, material, etc.) should be changed as appropriate. Can do.

  Further, in each of the above-described embodiments and modified examples, the example of the assembled battery 1 has been described as the battery immersed in the liquid 200 in the housing 2, but is not limited thereto. As the battery immersed in the liquid 200 in the housing 2, for example, the single battery 3 may be used.

  DESCRIPTION OF SYMBOLS 1 ... Assembly battery (battery), 2 ... Housing | casing, 2e ... Partition wall (1st wall part), 2f ... Peripheral wall (2nd wall part), 2j ... Peripheral part, 2k ... Opening part (2nd opening part), 3 Single cell, 3a ... container, 3b ... positive electrode part (electrode part), 3c ... negative electrode part (electrode part), 3g ... end part (one end part), 3h ... end part (other end part), 3i ... safety valve (Valve), 3j ... part, 4 ... conductive member, 5 ... cover, 5a ... first part, 5b ... surrounding, 5d ... opening (first opening), 21 ... case (first member), 22 ... dish , Shaped member (second member), 25a... Housing part (first housing part), 25b... Housing part (second housing part), 33.

Claims (11)

A housing,
A first wall portion provided in the housing, the interior of the housing being divided into a first housing portion and a second housing portion;
A container having an electrode portion and one end portion provided with the electrode portion and the other end portion on the opposite side of the one end portion, penetrating the first wall portion, and the other end portion being the A plurality of single cells housed in the first housing part and the electrode part housed in the second housing part;
A conductive member housed in the second housing portion and electrically connected to the electrode portion;
An insulating cover that is provided in the second housing portion and covers the conductive member and the portion of the unit cell that includes the electrode portion and is housed in the second housing portion;
Equipped with a,
The housing includes a first member provided with the first housing portion and a second member provided with the second housing portion and coupled to the first member . A housing,
A first wall portion provided in the housing, the interior of the housing being divided into a first housing portion and a second housing portion;
A container having an electrode portion and one end portion provided with the electrode portion and the other end portion on the opposite side of the one end portion, penetrating the first wall portion, and the other end portion being the A plurality of single cells housed in the first housing part and the electrode part housed in the second housing part;
A conductive member housed in the second housing portion and electrically connected to the electrode portion;
An insulating cover that is provided in the second housing portion and covers the conductive member and the portion of the unit cell that includes the electrode portion and is housed in the second housing portion;
With
The single cell is provided in front Symbol vessel, a valve for opening the container by pressure increase in the container,
The cover covers the valve;
First portion covering the said valve has a thickness of the thin had assembled battery than around the first portion in the covering portion of the covering portion. A housing,
A first wall portion provided in the housing, the interior of the housing being divided into a first housing portion and a second housing portion;
A container having an electrode portion and one end portion provided with the electrode portion and the other end portion on the opposite side of the one end portion, penetrating the first wall portion, and the other end portion being the A plurality of single cells housed in the first housing part and the electrode part housed in the second housing part;
A conductive member housed in the second housing portion and electrically connected to the electrode portion;
An insulating cover that is provided in the second housing portion and covers the conductive member and the portion of the unit cell that includes the electrode portion and is housed in the second housing portion;
With
The single cell is provided in front Symbol vessel, a valve for opening the container by pressure increase in the container,
An assembled battery in which the cover is provided with a first opening exposing the valve. A housing,
A first wall portion provided in the housing, the interior of the housing being divided into a first housing portion and a second housing portion;
A container having an electrode portion and one end portion provided with the electrode portion and the other end portion on the opposite side of the one end portion, penetrating the first wall portion, and the other end portion being the A plurality of single cells housed in the first housing part and the electrode part housed in the second housing part;
A conductive member housed in the second housing portion and electrically connected to the electrode portion;
An insulating cover that is provided in the second housing portion and covers the conductive member and the portion of the unit cell that includes the electrode portion and is housed in the second housing portion;
With
The single cell is provided in front Symbol vessel, a valve for opening the container by pressure increase in the container,
The valve is assembled battery which is positioned in the first housing portion. Wherein the housing includes a first member to which the first housing part is provided, any of the the second member second housing portion is coupled to the first member is provided, to claims 2 had 4 The assembled battery according to claim 1. Said second member, said the first wall portion, said first wall portion assembled battery according to claim 1 or 5 and a second wall portion which surrounds the said portion is provided in the peripheral portion, having a. The assembled battery according to any one of claims 1 to 6 , wherein the portion and the conductive member are embedded in the cover portion by the second housing portion. Comprising an electrical component electrically connected to the unit cell;
The assembled battery according to any one of claims 1 to 7 , wherein the cover portion covers the electrical component. The assembled battery according to claim 4 , wherein the casing is provided with a second opening that communicates the inside and outside of the first housing portion. A housing,
A container having an electrode part and one end part provided with the electrode part and the other end part opposite to the one end part, and a plurality of single cells housed in the housing;
A conductive member electrically connected to the electrode part;
An insulating cover that covers a part of the unit cell including the electrode unit and the conductive member of the unit cell;
Equipped with a,
The unit cell is provided in the container, and has a valve that opens the container by an increase in pressure in the container,
The cover covers the valve;
The first part of the cover that covers the valve is a battery pack that is thinner than the periphery of the first part of the cover . A housing,
A container having an electrode part and one end part provided with the electrode part and the other end part opposite to the one end part, and a plurality of single cells housed in the housing;
A conductive member electrically connected to the electrode part;
An insulating cover that covers a part of the unit cell including the electrode unit and the conductive member of the unit cell;
With
The unit cell is provided in the container, and has a valve that opens the container by an increase in pressure in the container,
An assembled battery in which the cover is provided with a first opening exposing the valve.

Images