JP2007026894A - Arranging structure of battery structure and vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress cooling irregularity of battery modules by a cooling medium, in a battery structure composed by stacking a plurality of battery modules. <P>SOLUTION: In a battery pack, a plurality of battery modules 10 are stacked on one another at predetermined intervals. In each wire group 22, a plurality of communication wires 21 each electrically connected to a battery element 40 stored in a module case are collected by being led to the outside from openings 12b formed in the module cases. In this case, the wire groups 22 are arranged in spaces between the battery modules adjacent to each other and guide the flow of the cooling medium flowing between the stacked battery modules in response to the routes of the arranged wire groups. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an arrangement structure of a battery structure configured by stacking a plurality of battery modules, and a vehicle on which the battery structure is mounted as a driving power source.

  In recent years, electric vehicles powered by electricity and hybrid cars that run in combination with an engine and motor have attracted attention, and the development of high-power batteries with high energy density and high output density has been developed. It has been broken. As such a high output type battery, for example, there is a lithium ion battery, and in particular, a power generation element in which a flat plate-like positive electrode plate and a negative electrode plate are laminated with a separator interposed therebetween together with an electrolyte between a pair of exterior members. There is a stacked battery that is housed and sealed by joining the peripheral edge of an exterior member (see, for example, Patent Document 1).

  When this stacked battery is used as a battery for a large current such as an automobile power source, a plurality of stacked batteries are connected in parallel or in series to form a battery module, and a plurality of the battery modules are assembled to be different from each other. The output voltage is increased by configuring the battery assembly by connecting electrode terminals included in the battery module in series.

By the way, in an assembled battery in which a plurality of battery modules are stacked, each battery module generates heat due to charging / discharging. Therefore, a coolant such as cooling air is passed between the stacked battery modules to cool each battery module. (For example, refer to Patent Document 2 or Patent Document 3).
JP 2004-087260 A JP 2001-283940 A JP 2001-319697 A

  However, there is a problem that if the refrigerant is merely flowed between the stacked battery modules, a region where the refrigerant does not spread appears, there are a portion with high cooling efficiency and a portion with low cooling efficiency, and uneven cooling occurs.

  The present invention has been made in view of such circumstances, and an object thereof is to suppress uneven cooling of a battery module due to a refrigerant in a battery structure configured by an assembled battery in which a plurality of battery modules are stacked. It is in.

  In order to solve this problem, the present invention provides a wiring structure for a battery structure having an assembled battery and a wiring group. The assembled battery is formed by stacking a plurality of battery modules each containing a battery element in a housing at a predetermined interval, thereby providing a gap with a predetermined interval between adjacent battery modules in the stacking direction. A refrigerant is supplied to the gap. In the wiring group, a plurality of communication lines that are electrically connected to the battery element are led out to the outside through an opening formed in the housing and are assembled. In this case, the wiring group is routed in the gap between the adjacent battery modules, and guides the flow of the refrigerant flowing between the stacked battery modules according to the locus of the wired wiring group.

  According to the present invention, the flow of the refrigerant is guided by the wiring group, and the refrigerant flows over the entire corresponding housing surface in the gap between the battery modules. As a result, simply flowing the refrigerant between the battery modules has a disadvantage that there are parts with high cooling efficiency and parts with low cooling efficiency, resulting in uneven cooling, but such a situation occurs. This can be suppressed.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(First embodiment)
1 and 2 are explanatory diagrams of the battery structure 1 according to the first embodiment of the present invention. FIG. 1 is a perspective view of the battery structure 1 viewed from the front direction, and FIG. 2 is a perspective view of the battery structure 1 viewed from the back direction. The battery structure 1 is mounted on a vehicle as a driving power source, for example, and is laid out so that the front direction thereof faces the front side of the vehicle and the back direction faces the rear side of the vehicle. Is placed.

  The battery structure 1 is mainly composed of an assembled battery composed of a plurality of battery modules 10 and a controller 20, and each battery module 10 is a wiring group 22 that is an aggregate of a plurality of communication lines 21. Is electrically connected to the controller 20. In the present embodiment, the assembled battery is composed of twelve battery modules 10, and three battery modules 10 stacked at a predetermined interval in the thickness direction (Z-axis direction) constitute one set (hereinafter “ The module set is called “module set”, and a layout in which only four module sets are arranged in a straight line in a direction (lateral direction) perpendicular to the stacking direction of the battery modules 10 is provided. In these battery modules 10, the negative electrode terminal 13 and the positive electrode terminal 13 are respectively connected by a connecting member (for example, a bus bar) 30 in adjacent battery modules 10 in the vertical direction or the horizontal direction. Thus, they are electrically connected in series. Between the 12 battery modules 10, the electrode terminals are electrically connected in series. For example, as shown in FIG. 1, the electrode terminal 13 on the negative electrode side of the battery module 10 located on the lowermost right side and the leftmost electrode terminal 13 The electrode terminal 13 on the positive electrode side of the battery module 10 located in the lower stage functions as a pair of electrode terminals 13 of the assembled battery itself.

  In the battery pack, each battery module 10 generates heat as it is charged / discharged. Therefore, a refrigerant (for example, cooling air) is introduced from the outside, and as described above, the battery modules 10 are stacked with a predetermined interval therebetween. The battery module 10 is cooled by allowing the coolant to flow into the gap formed between the modules. On the other hand, when a foreign object contacts between various electronic components such as the controller 20 and the connection member 30, a high voltage is applied to the electronic component, which may damage the electronic component. Therefore, from the viewpoint of preventing damage to the electronic component, a module cover (not shown) is attached so as to cover the entire battery structure 1. Therefore, an opening for the refrigerant is formed at a predetermined position of the module cover so that the flow of the refrigerant introduced into the module cover is not hindered by the module cover, for example, on the leftmost side shown in FIG. The refrigerant flows through the front side of the module set positioned as the inlet and the back side of the module set positioned at the rightmost side as the outlet.

  FIG. 3 is an exploded perspective view of the battery module 10. It should be noted that, in the figure, the vertical direction is reversed in comparison with the state of each battery module 10 shown in FIG. Each battery module 10 is formed by electrically connecting a plurality of unit cells 40. Each single battery 40 constituting the battery module 10 has a rectangular shape and is stacked in the thickness direction. Each unit cell 40 is, for example, overlapped and connected in series so that the cells on the positive electrode side and the terminal on the negative electrode side are alternated between the unit cells adjacent in the stacking direction (thickness direction). In the assembly of these unit cells 40, a pair of electrode terminals 13 for taking out current from the battery module 10 are provided on one side surface on the short side, and the communication line 21 is provided for each unit cell. The connection site | part 16 for connecting with 40 is each provided in a pair of side surface by the side of a short side. These single cells 40 are housed in a module case and modularized.

  The module case is a box-shaped container (housing) having a rectangular shape, and is formed of aluminum or other metal. The module case includes a bottom cover 11 that constitutes the lower side surface of the housing, and an upper surface cover 12 that integrally forms the four lateral and upper side surfaces of the housing. Of the four lateral surfaces constituting the upper surface cover 12, a pair of lateral surfaces parallel to the arrangement direction of the module set (that is, the lateral surface on the front side and the lateral side surface on the back side) are connected to the connection part 16 Wiring openings 12b for leading out the plurality of communication lines 21 to the outside are formed in the center. Further, of the pair of lateral side surfaces, one lateral side surface (the lateral side surface on the front side in this embodiment) has a pair for exposing the electrode terminals 13 on the positive electrode side and the negative electrode side of the battery module 10 to the outside. The terminal opening 12a is formed. The assembly of the unit cells 40 housed in such a module case is fixed by using the fixing plate 14 and the fixing sleeve 15 so as not to easily move in the inside thereof.

  As the single battery 40, for example, a stacked battery can be used. A laminated battery is mainly composed of an electrode laminate as a power generation element and a battery exterior housing the electrode laminate. The electrode laminate is accommodated so as to be sandwiched in the thickness direction by a pair of metal composite films constituting the battery exterior, and is sealed together with the electrolyte by welding the peripheral portions of these metal composite films.

  The electrode laminate is configured by sequentially laminating a plurality of positive and negative electrode plates with a separator interposed therebetween, and the planar shape thereof is substantially rectangular. The positive electrode plate is obtained by applying a positive electrode active material to both surfaces (or one surface) of a sheet-like positive electrode current collector, and the negative electrode plate is formed by applying a negative electrode active material to both surfaces (or one surface) of a sheet-like negative electrode current collector. It has been applied. Each positive electrode plate is connected to a positive electrode tab as one electrode terminal via a positive electrode lead. Each negative electrode plate is connected to a negative electrode tab as the other electrode terminal through a negative electrode lead.

  The positive electrode lead and the negative electrode lead are each formed of a metal foil. Specifically, the positive electrode lead is formed from, for example, an aluminum foil, and the negative electrode lead is formed from, for example, a copper foil. And each positive electrode lead withdraw | derived from each positive electrode plate is mutually piled up, and is joined to a positive electrode tab by methods, such as welding. In addition, the respective negative electrode leads drawn from the respective negative electrode plates are stacked in layers and joined to the negative electrode tab by a technique such as welding. The positive electrode tab and the negative electrode tab are each formed of a metal plate. Specifically, the positive electrode tab is made of, for example, an aluminum plate, and the negative electrode tab is made of, for example, a nickel plate.

  The pair of metal composite films constituting the battery exterior is a sheet-like member formed into a rectangular shape slightly larger than the electrode laminate in correspondence with the shape of the electrode laminate. Of the pair of metal composite films, one metal composite film that covers the upper surface side of the electrode laminate has a cup shape in which a concave portion for accommodating the electrode laminate is provided at the center, and the electrode laminate The other metal composite film that covers the lower surface side of this has a flat shape that covers the recess. The pair of metal composite films has, for example, a metal layer made of aluminum or the like as a base material, and a polymer resin layer made of PE (polyethylene) or PP (polypropylene) or the like is coated inside the metal layer. Moreover, a protective layer made of nylon or the like is bonded to these metal composite films via an adhesive layer on the outside of the metal layer.

  The laminated battery having such a configuration can be applied as, for example, a lithium ion battery. In this case, the positive electrode active material forming the positive electrode plate of the electrode laminate is a lithium manganese composite oxide, specifically, for example, a general formula LiyMn2-zM′zO4 (provided that 0.9 ≦ y ≦ 1 .2, 0.01 ≦ z ≦ 0.5, and M ′ is at least one of Fe, Co, Ni, Cu, Zn, Al, Sn, B, Ga, Cr, V, Ti, Mg, Ca, and Sr. The compound represented by this is contained. The positive electrode active material may be, for example, a general formula LiNi1-xMxO2 (where 0.01 ≦ x ≦ 0.5, and M is Fe, Co, Mn, Cu, Zn, in addition to the lithium manganese based composite oxide. , Al, Sn, B, Ga, Cr, V, Ti, Mg, Ca, and Sr.), a lithium nickel-based composite oxide that is a compound represented by the general formula LiCo1-xMxO2 (where 0 .01 ≦ x ≦ 0.5, and M is at least one of Fe, Ni, Mn, Cu, Zn, Al, Sn, B, Ga, Cr, V, Ti, Mg, Ca, and Sr.) It is also possible to contain a lithium cobalt complex oxide or the like which is a compound represented by

  On the other hand, as the negative electrode active material forming the negative electrode plate of the electrode laminate, any material can be used as long as it is a material capable of doping and dedoping lithium in the range of lithium potential to 2.0 V or less. is there. Specifically, non-graphitizable carbon materials, artificial graphite, natural graphite, pyrolytic graphite, cokes such as pitch coke, needle coke, petroleum coke, graphite, glassy carbon, phenol resin, furan resin, etc. It is possible to use a crystalline / amorphous carbonaceous material such as a fired organic polymer compound, carbon fiber, activated carbon, carbon black, etc., which has been carbonized by firing at an appropriate temperature.

  The controller 20 has a function of managing the state of each unit cell 40 constituting the battery module 10 for each of the twelve battery modules 10, and mainly includes, for example, a CPU, a ROM, a RAM, and an input / output interface. The microcomputer comprised of can be used. The controller 20 is connected to a wiring group 22 derived from each of the battery modules 10. The controller 20 detects a voltage or the like based on a signal from each unit cell 40 transmitted from the wiring group 22 to monitor the state of the unit cell 40 or adjust the state of charge of the unit cell 40. .

  Hereinafter, the wiring structure of the wiring group 22 which is one of the features of the present embodiment will be described. 4 to 6 are explanatory views for explaining a wiring structure of the wiring group 22 in each battery module 10. FIG. 4 is a top view of the battery module 10 viewed from the upper side. 5 is a side view of the battery module 10 viewed from the front side (exposed side of the electrode terminal 13) shown in FIG. 1, and FIG. 6 is a side view of the battery module 10 viewed from the back side shown in FIG. FIG. Hereinafter, although one certain battery module 10 is demonstrated among the several battery modules 10 which comprise the battery structure 1, it is the same also about the other battery module 10. FIG.

  After the plurality of communication lines 21 connected to the individual cells 40 via the connection parts 16 are led out to the outside from the wiring openings 12b formed on the front side surface and the rear side surface of the top cover 12. Each can be bundled. A pair of wiring groups 22 output from both sides of the single battery module 10 is routed to the controller 20.

  Of the pair of wiring groups 22, the wiring group 22 led out from the wiring opening 12 b formed on the lateral side surface on the front side is along the upper surface of the module cover (upper surface cover 12) that houses the unit cells 40. It has been routed. Specifically, the wiring group 22 is arranged in a straight line from the front side surface (first side surface) to the rear side surface (second side surface) opposite to the side surface. Has been. In the present embodiment, the wiring group 22 is inclined in the refrigerant inflow direction on the diagonal line of the module case (that is, when the battery structure 1 is viewed from the front, the left side of the lateral side on the front side to the lateral side on the back side. (To the right end of). The wiring group 22 on the upper side surface of the module cover collects a plurality of communication lines 21 and winds them with a vinyl tube 23, and bundles them together with a cable tie 24, so that the communication lines 21 having a predetermined diameter (for example, 1 mm). It is an aggregate and is devised so that each communication line 21 (wiring group 22) is not scattered. The wiring group 22 routed to the lateral side surface on the back side is routed upward along the lateral side surface of the module set and connected to the controller 20. On the other hand, the wiring group 22 led out from the wiring opening 12b formed on the lateral side surface on the back side is routed upward along the lateral side surface of the module set and connected to the controller 20.

  FIG. 7 is an explanatory diagram of a refrigerant flow state by the routing structure according to the present embodiment. In FIG. 7, (a) shows the flow state of the refrigerant in a state where the routing structure of this embodiment is not applied, and (b) shows the flow of the refrigerant in a state where the routing structure of this embodiment is applied. Indicates the state. As shown in FIG. 2A, the refrigerant flowing from the inlet side first enters between the front side surface of the battery module 10 and the module cover, and then flows between the battery modules. Since there is nothing that blocks the flow between the stacked battery modules, most of the battery modules 1 flow diagonally from the inlet side to the outlet side. Therefore, when the battery structure 1 is viewed from the front side, a phenomenon occurs in which the refrigerant hardly flows on the back side of the module set located on the leftmost side or on the front side of the module set located on the rightmost side. On the other hand, in the present embodiment, as shown in FIG. 4B, the refrigerant flowing from the inlet side first enters between the side surface on the front side of the battery module 10 and the module cover, and wiring is performed. The flow is guided by the group 22, and after flowing in a distributed manner to the individual battery modules 10, it flows out to the outlet side. That is, the flow on the diagonal line in the battery structure 1 is regulated by the wiring group 22 routed along the upper side surface of the module cover.

  As described above, according to the present embodiment, the battery structure 1 includes the assembled battery and the wiring group 22. In the assembled battery, a plurality of battery modules 10 each storing a battery element (in the present embodiment, a plurality of single cells 40) in a module case are stacked at a predetermined interval and adjacent to each other in the stacking direction. A gap having a predetermined interval is provided between the modules, and the refrigerant is supplied to the gap. In the wiring group 22, a plurality of communication lines 21 electrically connected to the plurality of single cells 40 are led out to the outside from the wiring openings 12 b formed in the module case and gathered. In this case, the wiring group 22 is routed in the gap between the adjacent battery modules, and the flow of the refrigerant flowing between the stacked battery modules is guided according to the locus of the routed wiring group 22. To do. As a result, the flow of the refrigerant is guided by the wiring group 22 and flows over the entire surface of the module case that faces the refrigerant flow path. As a result, simply flowing the refrigerant between the battery modules has a disadvantage that there are portions with high cooling efficiency and portions with low cooling efficiency, resulting in uneven cooling. The occurrence of such a situation can be suppressed. Moreover, since the deterioration of the performance of the battery module can be suppressed by suppressing the uneven cooling, the life of the battery module 10 and the battery structure 1 can be extended.

  Furthermore, according to the present embodiment, a controller that is electrically connected to the other end of the wiring group 22 and manages the state of each unit cell 40 based on a signal transmitted from the wiring group 22. 20 is further included. According to this configuration, since the wiring group 22 existing as an existing configuration is used, the cooling efficiency can be improved without unnecessarily increasing the cost.

  According to the present embodiment, the wiring group 22 is individually provided for the plurality of battery modules 10, and each wiring group 22 is an upper side surface of a module case that houses the unit cell 40 to which the wiring group 22 is connected. Is routed along the gaps described above. Thereby, since the cooling efficiency of each battery module 10 can be improved, the overall cooling performance of the battery structure 1 can be improved. In addition, in this embodiment, although the wiring structure for cooling is performed targeting each battery module 10 which comprises the battery structure 1, this invention is not limited to this. That is, you may perform such a wiring structure only for the specific battery module 10 as object.

  In addition, according to the present embodiment, the assembled battery is configured by arranging a plurality of stacked battery modules 10 as one set (module set) and arranging a plurality of sets linearly in a direction orthogonal to the stacking direction. According to such a configuration, there is a problem in that the uneven cooling becomes prominent depending on the layout position of the module set. According to the present embodiment, even an assembled battery having such a configuration is provided in each battery module 10. The refrigerant flows in a dispersed manner, and cooling can be performed effectively.

  Further, according to the present embodiment, each of the battery modules 10 has a rectangular module case, and the wiring openings 12b from which the wiring group 22 is led out are arranged in the module case in the arrangement direction of the module set. Of the pair of parallel side surfaces, at least one side surface is provided on the first side surface (in this embodiment, the front side surface). The wiring group 22 extends from the first lateral side surface in which the wiring opening 12b is formed to the second lateral side surface (in this embodiment, the lateral side surface on the back side) opposite to the first lateral side surface. It is routed in a straight line. According to such a configuration, in each battery module 10, since the refrigerant flow path is formed from the front side to the back side, the refrigerant flows through the individual battery modules 10 in a distributed manner, resulting in uneven cooling. The occurrence of a situation can be suppressed.

  Further, according to this embodiment, in each of the module sets arranged in the lateral direction, the refrigerant flows diagonally from one set side located at the end to the other set side located at the end. It is desirable that According to this configuration, the above-described operation can be effectively achieved. In this case, it is preferable that the wiring group 22 is inclined in the refrigerant flow direction and the upper side surface of the module case is arranged diagonally. According to such a configuration, the flow can be smoothly dispersed without obstructing the flow of the refrigerant.

(Second Embodiment)
Hereinafter, the wiring structure of the battery structure 1 according to the second embodiment of the present invention will be described. In addition, about the structure similar to the above-mentioned 1st Embodiment, the detailed description is abbreviate | omitted by attaching | subjecting the same code | symbol.

  The wiring structure of the battery structure 1 according to the second embodiment is different from that of the first embodiment in the wiring layout of the wiring group 22 on the upper side surface of the module case. That is, in the first embodiment, the wiring group 22 is routed on the diagonal line of the module case so as to be inclined in the refrigerant inflow direction. In this regard, in the present embodiment, the wiring group 22 is routed along the lateral side surface to which the module set is adjacent, that is, along the vertical direction of the lateral side surface on the front side. Similar to the first embodiment, the wiring group 22 on the top cover 12 includes an aggregate having a predetermined diameter (for example, 1 mm) by bundling a plurality of communication lines 21 and winding them with a vinyl tube 23. Thus, each communication line 21 (wiring group 22) is devised so as not to be scattered.

  FIG. 8 is an explanatory diagram of a refrigerant flow state by the routing structure according to the present embodiment. In FIG. 8, (a) shows the refrigerant | coolant flow state in the state which does not apply the routing structure of this embodiment, (b) shows the refrigerant | coolant flow in the state which applied the routing structure of this embodiment. Indicates the state. As shown in FIG. 2A, the refrigerant flowing from the inlet side first enters between the front side surface of the battery module 10 and the module cover, and then flows between the battery modules. Since there is nothing that blocks the flow between the stacked battery modules, most of the battery modules 1 flow diagonally from the inlet side to the outlet side. Therefore, when the battery structure 1 is viewed from the front side, a phenomenon occurs in which the refrigerant hardly flows on the back side of the module set located on the leftmost side or on the front side of the module set located on the rightmost side. On the other hand, in the present embodiment, as shown in FIG. 4B, the refrigerant flowing from the inlet side first enters between the side surface on the front side of the battery module 10 and the module cover, and wiring is performed. The flow is guided by the group 22, and after flowing in a distributed manner to the individual battery modules 10, it flows out to the outlet side. That is, the flow on the diagonal line in the battery structure 1 is regulated by the wiring group 22 routed along the upper side surface of the module cover.

  Thus, according to this embodiment, the wiring group is wired in the vertical direction of the lateral side surface on the front side. Thereby, while having the effect | action and effect similar to 1st Embodiment, a variation can be given to the wiring layout of the wiring group 22 which guides the flow of a refrigerant | coolant.

  As described above, in the first or second embodiment, the embodiment of the present invention has been described. However, the present invention is not limited to the above-described embodiment, and the present invention is not limited to this embodiment. Various modifications can be made according to the design or the like as long as the technical idea does not depart from the scope. For example, although the wiring group 22 is routed along the upper side surface of the module case, the same effect can be achieved even when routed along the lower surface side. In addition, it is not necessary for all the battery modules 10 to have the same layout, and from the viewpoint of cooling efficiency, a layout in which the layout is individually changed for each battery module 10 may be used.

  Further, the communication lines 21 led out from the individual battery modules 10 are routed on the module case as a single wiring group 22. However, the communication lines 21 derived from the different battery modules 10 may be bundled with the wiring group 22 derived from the own battery module 10 and routed on the module case. For example, the wiring group 22 is configured such that the wiring density of the communication lines 21 is larger in the wiring group 22 wired downstream than the wiring group 22 wired upstream of the refrigerant. . According to this configuration, it is possible to suppress a situation in which the refrigerant flow is prevented by the upstream wiring group 22 and the refrigerant hardly flows downstream. Thereby, the whole battery structure 1 can be cooled effectively. Furthermore, the communication line 21 led out from the battery module 10 is divided into two or more wiring groups 22, and these are independently routed along the upper side surface of the module case. A plurality of flow paths may be configured. Further, in each of the above-described embodiments, the battery module 10 is configured as a module in which a plurality of unit cells are connected. However, the present invention is not limited to this, and each battery module 10 may be configured as a high-output unit cell. Good.

It is a front perspective view of the battery structure according to the first embodiment. 1 is a rear perspective view of a battery structure according to a first embodiment. It is a disassembled perspective view of a battery module. 3 is an explanatory diagram for explaining a wiring structure of a wiring group 22 in each battery module 10. FIG. 3 is an explanatory diagram for explaining a wiring structure of a wiring group 22 in each battery module 10. FIG. 3 is an explanatory diagram for explaining a wiring structure of a wiring group 22 in each battery module 10. FIG. It is explanatory drawing of the flow state of the refrigerant | coolant by the wiring structure which concerns on 1st Embodiment. It is explanatory drawing of the flow state of the refrigerant | coolant by the wiring structure which concerns on 2nd Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Battery structure 10 Battery module 11 Bottom cover 12 Top cover 12a Electrode opening 12b Wiring opening 13 Electrode terminal 14 Fixing plate 15 Fixing sleeve 16 Connection part 20 Controller 21 Communication line 22 Wiring group 23 Vinyl tube 24 Cable Thailand 30 Wiring member 40 Cell

Claims (12)

By stacking a plurality of battery modules each containing a battery element in a housing at a predetermined interval, a gap of the predetermined interval is provided between battery modules adjacent to each other in the stacking direction, and a refrigerant is provided in the gap. With assembled battery supplied,
A plurality of communication lines that are electrically connected to the battery element have a wiring group that is led out and gathered from an opening formed in the housing.
The wiring group is
A battery structure that is routed in a gap between the battery modules adjacent to each other and guides a flow of refrigerant flowing between the stacked battery modules according to a locus of the routed wiring group. Routing structure.   The controller according to claim 1, further comprising a controller that is electrically connected to the other end of the wiring group and that manages a state of the battery element based on a signal transmitted from the wiring group. Battery structure installation structure. The wiring group is individually provided for the plurality of battery modules,
Each of the said wiring group is wired in the said clearance gap by being wired along the upper surface or lower surface of the housing | casing which accommodates the battery element to which self was connected. The wiring structure of the battery structure described in 1 or 2.   4. The battery pack according to claim 1, wherein the battery pack is arranged in a straight line in a direction orthogonal to the stacking direction, with a plurality of stacked battery modules as one set. 5. A wiring structure of the described battery structure. Each of the battery modules is provided with a rectangular housing for housing the battery element,
The opening from which the wiring group is led out is provided on the first lateral side surface which is at least one lateral side surface of the pair of lateral side surfaces parallel to the arrangement direction of the battery modules in the housing. And
The wiring group is routed in a straight line from a first lateral side surface in which the opening is formed to a second lateral side surface facing the first lateral side surface. A wiring structure of the battery structure described in 4.   In each of the battery module sets arranged in the lateral direction, the refrigerant is diagonally extended from the set side of one of the battery modules located at the end to the set side of the other battery module located at the end. The battery structure wiring structure according to claim 5, wherein the battery structure is inserted into the battery structure.   The wiring structure of the battery structure according to claim 6, wherein the wiring group is inclined in a diagonal direction on an upper side surface of the housing, being inclined in a flow direction of the refrigerant.   The wiring structure of the battery structure according to claim 6, wherein the wiring group is wired in a vertical direction with respect to the first lateral surface.   7. The wiring group having a higher wiring density in the wiring group arranged downstream than the wiring group arranged upstream of the refrigerant. The wiring structure of the battery structure described in any one of 8. The battery module is configured by electrically connecting a plurality of stacked batteries,
Each stacked battery has a power generation element configured by alternately stacking positive plates and negative plates via separators,
The wiring structure of the battery structure according to any one of claims 1 to 9, wherein the wiring group includes the communication lines individually connected to the stacked batteries. The positive electrode plate is formed by applying a positive electrode active material to a sheet-like positive electrode current collector,
The negative electrode plate is formed by applying a negative electrode active material to a sheet-like negative electrode current collector,
The positive electrode active material contains a lithium manganese composite oxide,
11. The battery structure wiring structure according to claim 10, wherein the negative electrode active material is selected from a crystalline carbon material or an amorphous carbonaceous material.   A vehicle on which a battery structure including the routing structure according to claim 1 is mounted as a driving power source.

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