WO2019044242A1 - Module de batterie - Google Patents

Module de batterie Download PDF

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Publication number
WO2019044242A1
WO2019044242A1 PCT/JP2018/027038 JP2018027038W WO2019044242A1 WO 2019044242 A1 WO2019044242 A1 WO 2019044242A1 JP 2018027038 W JP2018027038 W JP 2018027038W WO 2019044242 A1 WO2019044242 A1 WO 2019044242A1
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WIPO (PCT)
Prior art keywords
battery
battery module
recess
present
battery group
Prior art date
Application number
PCT/JP2018/027038
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English (en)
Japanese (ja)
Inventor
ソクチョル 申
将成 織田
茂樹 牧野
航 佐藤
中野　洋一
石津　竹規
Original Assignee
日立オートモティブシステムズ株式会社
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Publication of WO2019044242A1 publication Critical patent/WO2019044242A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
    • H01M10/647—Prismatic or flat cells, e.g. pouch cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/222—Inorganic material
    • H01M50/224—Metals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/227—Organic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/271—Lids or covers for the racks or secondary casings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present invention relates to a battery module.
  • Examples of the on-vehicle secondary battery include a lithium ion secondary battery, a lead storage battery, and a nickel hydrogen battery.
  • lithium ion secondary batteries generally have higher discharge potential than lead batteries and nickel hydrogen batteries, so that miniaturization and high energy density are possible, which is considered promising.
  • lithium ion secondary batteries for full-scale application.
  • it is effective, for example, to input / output a large current from the battery as well as to increase the potential.
  • the temperature difference between the cells in the battery group is small Furthermore, it is desirable that the maximum ultimate temperature of the batteries present in the battery group be low. This is because when the temperature difference between the unit cells is large and the maximum temperature reached is high, the difference in deterioration is likely to occur between the unit cells. Since the characteristics of the battery group tend to be limited by the characteristics of the most deteriorated battery among the cells included in the battery group, it is necessary to design a battery group in which a specific battery does not deteriorate.
  • Patent Document 1 a partition is provided between the unit cells to secure a space. Furthermore, the space is opened to the outside from the ventilation window provided in the case (the case for storing a plurality of batteries), and the heat dissipation is enhanced.
  • the present invention is made in view of the above-mentioned subject, and an object of the present invention is to provide a battery module which combines heat dissipation and waterproofness.
  • a battery module includes a first battery group in which a plurality of battery cells are stacked, a second battery group in which a plurality of battery cells are stacked, and the first battery
  • a battery module having a housing for storing a group and a second battery group, wherein the housing is provided with a recess, and the recess is disposed between the first battery group and the second battery group It is characterized by being.
  • a battery module having both heat dissipation and waterproof properties by providing a recess in the housing and arranging the recess between the first battery group and the second battery group. .
  • FIG. 21 is an exploded perspective view schematically showing an example of a battery module configuration of Examples 1 to 7.
  • FIG. 21 is an exploded perspective view schematically showing an example of a battery module configuration of Examples 8 to 10.
  • FIG. 7 is an exploded perspective view schematically showing an example of a battery module configuration of Comparative Example 1;
  • FIG. 6 is a graph comparing the temperature rise ratio of the battery group in Examples 1 to 3 and Comparative Example 1.
  • FIG. FIG. 16 is a graph comparing the temperature rise ratio of the battery group in Examples 4 to 7 and Comparative Example 1.
  • FIG. FIG. 16 is a graph comparing the temperature rise ratios of the battery groups in Examples 8 to 10 and Comparative Example 1.
  • the present embodiment is not limited to the following contents at all, and can be implemented with arbitrary modifications without departing from the scope of the present invention.
  • the cooling environment in the present invention is an example, and can be applied to the case of using other refrigerants other than air and water.
  • the lithium ion secondary battery was illustrated as a secondary battery in this invention, this structure is applicable also to another type of storage battery.
  • the components of the lithium ion secondary battery can be effectively used regardless of their kind. That is, in the present invention, an electrode made of an Al current collector foil and a positive electrode material having a layered structure is used as a positive electrode, and an electrode made of a Cu current collector foil and a carbon material is used as a negative electrode.
  • Al foil is used for the current collection foil of a negative electrode, it is possible to improve heat dissipation.
  • a prismatic battery is used in the present embodiment as the shape of the lithium ion battery, the effect can be obtained even if the battery is, for example, a laminate type or cylindrical type battery known as other shapes.
  • the number of battery groups 1A and 1B included in the housing 15 is such that the battery side surfaces physically and thermally contact the side surfaces of the housing 15 as in the configuration according to the present invention. Any number may be used as long as the heat radiation path from the side of 1B can be shortened, but preferably an even number is preferable to ensure the stability of the battery module.
  • the number of batteries constituting the battery groups 1A and 1B can be the configuration in the present invention, and can be any number as long as a desired voltage and capacity can be secured within the housing 15. An effect is obtained.
  • the heat radiation effect the smaller the number of stacked cells in one battery group 1A, 1B, the more effective the effect, but it is preferably 100 or less, more preferably 20 or less, and most preferably 10 or less. .
  • the battery can be made compact and have both cooling properties.
  • the effects of the present invention can be obtained even if the number of batteries of the battery groups 1A and 1B is not necessarily the same.
  • the effect of the present invention can be obtained even when the number of one battery in the battery group is one or more compared to the number of the other battery.
  • the effects of the present invention can be obtained even if, for example, an insulating sheet or a member having high thermal conductivity is disposed between the unit cells forming the battery group, and the effects of the present invention can be obtained even if they are not disposed. Further, the effects of the present invention can be obtained even if a three-dimensional structure such as projections or grooves of various shapes such as a rail shape or a dot shape is introduced to the insulating sheet or the member having high thermal conductivity.
  • a material with high thermal conductivity such as aluminum, aluminum die casting, copper, iron or the like can be used as the material of these members.
  • polypropylene, polyamide, polyetherimide, PPS, PPA, PBT or the like, or high thermal conductivity resin can be used.
  • the cell groups 1A and 1B physically restrain the cells by using a fixing jig.
  • a fixing jig As the material of the fixing jig, when the side surface of the unit cell 2 is covered with the insulating material, a material with high thermal conductivity such as aluminum, aluminum die casting, copper, iron or the like can be used.
  • a material with high thermal conductivity such as aluminum, aluminum die casting, copper, iron or the like can be used.
  • polypropylene, polyamide, polyetherimide, PPS, PPA, PBT or the like, or high thermal conductivity resin can be used.
  • the present invention is not limited to the method of restraint.
  • the effect is exhibited even when they are fixed by using two sets of fixing jigs. Further, even if at least a part of the fixing jig is the housing 15, the effect of the present invention is obtained. Furthermore, one side of the two battery groups used a common fixing jig, and the other side had an effect using separate fixing jigs.
  • each member such as the housing 15 and the battery groups 1A and 1B is not particularly limited.
  • the effect of the present invention can be exhibited even by adhesion with an adhesive or connection via a fixing device such as a bolt or a nut.
  • a fixing device such as a bolt or a nut.
  • casing 15 exemplifies the rectangular parallelepiped which has the recessed part 16 in this embodiment, the shape in particular is not limited.
  • the effect in the present invention is not limited to the current application condition and the cooling condition to the battery module.
  • Examples of the type of the housing 15 include, but are not limited to, a resin housing and a metal housing.
  • a casing 15 made of a heat conductive metal such as aluminum, aluminum die cast, copper, iron or the like is preferable.
  • a heat conductive grease or sheet may be interposed between the recess 16 and the battery group.
  • the present invention is particularly effective for miniaturizing a 48V secondary battery module which is driven at high output and without a cooling fan.
  • Example Hereinafter, the present invention will be described in more detail based on examples and comparative examples.
  • the descriptions “x direction, y direction, z direction” will be used, but the directions correspond to the directions described at the lower left of each drawing.
  • a unit cell 2 is formed by winding an electrode made of an Al current collector foil and a positive electrode material having a layered structure as a positive electrode, and an electrode made of a Cu current collector foil and a carbon material as a negative electrode.
  • Six batteries were stacked as shown in FIG. 1, and the periphery thereof was fixed using a fixing jig 13 to obtain a battery group 1A (1B).
  • the unit cell 2 includes a pair of wide surfaces, a pair of narrow surfaces, a bottom surface, and an upper surface facing the bottom surface, and a positive electrode terminal 3 and a negative electrode terminal 4 are provided on the upper surface.
  • the securing jig 13 includes a pair of securing jigs 13A for securing the unit cells 2 in the z direction and a pair of securing jigs 13B for securing the unit cells 2 in the x direction.
  • the tool 13A and the securing jig 13B are fixed by the fixing bracket 12, respectively.
  • FIG. 2 shows a battery module 10 containing the battery groups 1A and 1B shown in FIG.
  • the battery group 1A (1B) described above is housed in the housing 15.
  • the housing 15 is provided with a recess, and the recess 16 is in close contact with the side surfaces of the battery groups 1A and 1B.
  • a space 14 for arranging electrical components is provided in a space facing the space in which the battery groups 1A and 1B are stored.
  • a circuit board, a fuse, and a mechanical switch for managing charge and discharge of the unit cell 2 are provided in this space. Electrical components that ensure the safety of the battery pack 10 are disposed. After the battery groups 1A and 1B and the electrical components are stored, the opening of the housing 15 is covered by the lid 11 to constitute the battery module 10.
  • the length of the recess in the recess 16 in the depth direction (y direction) is set to 100% of the length in the y direction of the battery group.
  • a current was applied to the battery module 10 and the temperature rise was measured. Under the present circumstances, it was set as the test result in a thermostat without a flow of air.
  • the calorific value from the battery was calculated from the current value, and the current value was applied so as to be 3.37 W on average.
  • the temperature behavior at the time when the battery module is brought into a substantially steady state after the above conditions are given to the battery module is shown in FIG.
  • Example 2 the length of the recess in the recess 16 in the depth direction (y direction) is 50%.
  • a current was applied to the battery module 10 and the temperature rise was measured. Under the present circumstances, it was set as the test result in a thermostat without a flow of air.
  • the calorific value from the battery was calculated from the current value, and the current value was applied so as to be 3.37 W on average.
  • the temperature behavior at the time when the battery module is brought into a substantially steady state after the above conditions are given to the battery module is shown in FIG.
  • the third embodiment will be described.
  • the length of the recess in the recess 16 in the depth direction (y direction) is 25%.
  • a current was applied to the battery module 10 and the temperature rise was measured. Under the present circumstances, it was set as the test result in a thermostat without a flow of air.
  • the calorific value from the battery was calculated from the current value, and the current value was applied so as to be 3.37 W on average.
  • the temperature behavior at the time when the battery module is brought into a substantially steady state after the above conditions are given to the battery module is shown in FIG.
  • Example 4 the length in the depth direction (y direction) of the recess in the recess 16 is 100%, and the width (x direction) of the recess is 1.7% of the size in the x direction of the housing.
  • a current was applied to the battery module 10 and the temperature rise was measured. Under the present circumstances, it was set as the test result in a thermostat without a flow of air. The calorific value from the battery was calculated from the current value, and the current value was applied so as to be 3.37 W on average.
  • the temperature behavior at the time when the battery module is brought into a substantially steady state after the above conditions are given to the battery module is shown in FIG.
  • Example 5 the length in the depth direction (y direction) of the recess of the recess 16 is 100%, and the width (x direction) of the recess is 3.3% of the size in the x direction of the housing.
  • a current was applied to the battery module 10 and the temperature rise was measured. Under the present circumstances, it was set as the test result in a thermostat without a flow of air. The calorific value from the battery was calculated from the current value, and the current value was applied so as to be 3.37 W on average.
  • the temperature behavior at the time when the battery module is brought into a substantially steady state after the above conditions are given to the battery module is shown in FIG.
  • Example 6 the fifth embodiment will be described.
  • the length in the depth direction (y direction) of the recess in the recess 16 is 100%, and the width (x direction) of the recess is 6.7% of the size in the x direction of the housing.
  • a current was applied to the battery module 10 and the temperature rise was measured. Under the present circumstances, it was set as the test result in a thermostat without a flow of air. The calorific value from the battery was calculated from the current value, and the current value was applied so as to be 3.37 W on average.
  • the temperature behavior at the time when the battery module is brought into a substantially steady state after the above conditions are given to the battery module is shown in FIG.
  • Example 7 the fifth embodiment will be described.
  • the length in the depth direction (y direction) of the recess in the recess 16 is 100%, and the width (x direction) of the recess is 10.0% of the size in the x direction of the housing.
  • a current was applied to the battery module 10 and the temperature rise was measured. Under the present circumstances, it was set as the test result in a thermostat without a flow of air. The calorific value from the battery was calculated from the current value, and the current value was applied so as to be 3.37 W on average.
  • the temperature behavior at the time when the battery module is brought into a substantially steady state after the above conditions are given to the battery module is shown in FIG.
  • the eighth embodiment differs from the first embodiment in that a liquid cooling pipe 17 is provided around the recess 16 as shown in FIG.
  • the length of the width (y direction) of the liquid cooling pipe was 100% of the length of the battery groups 1A and 1B in the y direction.
  • a current was applied to the battery module 20. Under the present circumstances, it was set as the test result in a thermostat without a flow of air. The calorific value from the battery was calculated from the current value, and the current value was applied so as to be 3.37 W on average.
  • the present example gives the same current application conditions and surrounding cooling environment as the examples 1 to 3 to the battery of the above configuration, and the result when the battery is in a substantially steady state is shown in FIG.
  • Example 9 differs from Example 8 in that the length of the width (y direction) of the liquid-cooled pipe is 50% of the length of the battery groups 1A and 1B in the y direction.
  • a current was applied to the battery module 20. Under the present circumstances, it was set as the test result in a thermostat without a flow of air. The calorific value from the battery was calculated from the current value, and the current value was applied so as to be 3.37 W on average.
  • the present example gives the same current application conditions and surrounding cooling environment as the examples 1 to 3 to the battery of the above configuration, and the result when the battery is in a substantially steady state is shown in FIG.
  • Example 10 differs from Example 8 in that the length of the width (y direction) of the liquid-cooled pipe is 25% of the length in the y direction of the battery groups 1A and 1B.
  • a current was applied to the battery module 20. Under the present circumstances, it was set as the test result in a thermostat without a flow of air. The calorific value from the battery was calculated from the current value, and the current value was applied so as to be 3.37 W on average.
  • the present example gives the same current application conditions and surrounding cooling environment as the examples 1 to 3 to the battery of the above configuration, and the result when the battery is in a substantially steady state is shown in FIG.
  • Comparative example 1 In Comparative Example 1, an electrode made of an Al current collector foil and a positive electrode material having a layered structure as a positive electrode, and an electrode made of an Al current collector foil and a spinel oxide as a negative electrode are single electrodes formed by winding those electrodes.
  • the batteries 2 and 6 were stacked as described in FIG. 1, and the periphery was fixed using a fixing pressure jig to obtain a battery group.
  • the center block 18 is provided between the battery groups 1A and 1B and stored in the housing 15.
  • the present comparative example gives the battery of the above-described configuration the same current application conditions and surrounding cooling environment as in Examples 1 to 3, and exemplifies the results when the battery is in a substantially steady state.
  • FIG. 5 is an example to which the present invention is applied together with Comparative Example 1, in which the temperature rise rate of the unit cell is described on the vertical axis, and the cell number of the unit cell 2 is described on the horizontal axis.
  • the cell numbers are as shown in FIG. Moreover, since the behavior similar to that of the battery groups 1A and 1B is shown, the result of the battery group 1A is added.
  • Example 1 The temperature rise ratio of Example 1, 2 and 3 is shown.
  • the temperature rise ratio indicates the temperature rise of the other battery cells when the maximum temperature of the battery cells in Comparative Example 1 is 100%.
  • Temperature rise ratio (temperature of evaluation target battery cell / maximum temperature of battery cell in comparative example 1) ⁇ 100.
  • the recessed part 16 heat radiation space
  • the center block 18 was installed between two battery group 1A, 1B.
  • the length in the depth direction (y direction) of the recess of the recess is 100%, 50%, and 25% of the length in the y direction of battery group 1A (1B), respectively.
  • the width of the recess is constant at about 3.3% of the length of the housing in the x direction.
  • the temperature increase ratio of Examples 1 to 3 in which the heat dissipating concave portion is provided is lower than that of Comparative Example 1. This is because the heat generated during charge and discharge is dissipated from the recess.
  • This result indicates that providing the recess 16 in the housing 15 is very effective in the air cooling method.
  • the larger the contact area between the recess and the battery group the more effective it is for air cooling.
  • Comparative Example 1 and Examples 1 to 3 it can be seen that the temperature increase ratio of cell numbers 3 and 4 is higher than the temperature increase ratio of the other battery cells of the same battery module.
  • the cell numbers 3 and 4 are located at the centers of the respective battery groups, and the heat transfer path is long and the heat dissipation is low.
  • FIG. 6 shows the temperature increase ratio of Examples 4 to 7 which is an example to which the present invention is applied together with Comparative Example 1.
  • the length in the depth direction (y direction) of the recess of the recess is set to 100% of the length in the y direction of the battery group 1A (1B), and the width of the recess (x direction) Of 1.7%, 3.3%, 6.7%, and 10.0% of the size of the housing 15 in the x direction, respectively.
  • the temperature rise ratio of Examples 4 to 7 in which the heat dissipating concave portion is provided is lower than that of Comparative Example 1. This is because the heat generated during charge and discharge is dissipated from the recess.
  • Examples 4 to 7 have different recess widths, and the temperature rise rates are also different.
  • the width of the recess is preferably 1.7% or more, and more preferably 3.3% or more and 10% or less of the housing size in the same direction of the width. It should be noted that when the size of the case is limited, if the width of the recess is too wide, the heat transfer area of the case itself decreases, so it is considered that the temperature rise rate is higher than in Examples 1 to 3.
  • FIG. 7 shows the temperature increase ratio of Examples 8 to 10 which is an example to which the present invention is applied together with Comparative Example 1. As described above, when the cooling pipe 17 is used, the cooling efficiency is improved, and the effect is enhanced.
  • the present invention is summarized as above.
  • the battery module according to the present invention includes a first battery group (1A) in which a plurality of battery cells (2) are stacked, and a second battery group (1B) in which a plurality of battery cells (2) are stacked.
  • a housing (15) for housing the first battery group (1A) and the second battery group (1B), the housing (15) being provided with a recess (16), the recess (16) ) Are disposed between the first battery group (1A) and the second battery group (1B).
  • the cooling pipe 17 it is possible to provide a small-sized battery module with high cooling performance without increasing the size of the battery module. Furthermore, since the recess of the housing 15 is arranged to face the space where the electrical components are arranged, not only the heat dissipation is improved compared to the conventional battery module, but it is more resistant to crushing in the y direction. It becomes a structure. In addition, since the hard battery groups 1A and 1B are disposed in the x direction and the z direction, crushing is strong.
  • fins may be provided in the recess 16. With such a structure, the heat dissipation of the battery group is further improved. Further, as described above, when the cooling pipe 17 is provided in the recess 16, the heat dissipation is further improved.
  • a heat dissipation member having better heat dissipation than the housing 15 may be disposed in the recess 16.
  • the member having a good heat dissipation property referred to here is, for example, a member in which a filler is kneaded into a resin, or a metal member having a better heat dissipation property.
  • the battery module includes the securing plate for securing the plurality of battery cells, and the securing plate (13) is a first securing plate (13) corresponding to the first battery group. And a second securing plate (13) corresponding to the second battery group.
  • the adhesion of each battery group can be increased to improve the heat dissipation.
  • the width of the recess is 1.7% or more of the width of the housing (15). With such a configuration, a higher heat dissipation effect can be obtained.
  • the present invention is not limited to the above-mentioned embodiment, and various designs are possible in the range which does not deviate from the spirit of the present invention described in the claim. It is possible to make changes.
  • the above-described embodiment has been described in detail in order to explain the present invention in an easy-to-understand manner, and is not necessarily limited to one having all the described configurations.
  • part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. Furthermore, with respect to a part of the configuration of each embodiment, it is possible to add / delete / replace other configurations.

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

Abstract

La présente invention aborde le problème de fourniture de module de batterie ayant à la fois des propriétés de dissipation de chaleur et d'étanchéité à l'eau. Afin d'atteindre l'objectif décrit ci-dessus, un module de batterie selon la présente invention comprend un premier groupe de batteries dans lequel une pluralité de cellules sont stratifiées, un second groupe de batteries dans lequel une pluralité de cellules sont stratifiées, et un boîtier qui contient le premier groupe de batteries et le second groupe de batteries ; et ce module de batterie est caractérisé en ce que le boîtier comprend un évidement et cet évidement est agencé entre le premier groupe de batteries et le second groupe de batteries.
PCT/JP2018/027038 2017-08-30 2018-07-19 Module de batterie WO2019044242A1 (fr)

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CN111952505B (zh) * 2020-08-21 2023-03-31 阳光电源股份有限公司 一种堆叠式电源柜
CN111900502A (zh) * 2020-08-21 2020-11-06 阳光电源股份有限公司 储能柜

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JP2014089839A (ja) * 2012-10-29 2014-05-15 Sanyo Electric Co Ltd 電源装置及び電源装置を備える車両
US20160211086A1 (en) * 2015-01-15 2016-07-21 Ioxus, Inc. Apparatus for enclosing energy storage devices
WO2016208361A1 (fr) * 2015-06-25 2016-12-29 日立オートモティブシステムズ株式会社 Dispositif de stockage d'énergie
JP2017103109A (ja) * 2015-12-02 2017-06-08 株式会社オートネットワーク技術研究所 冷却部材及び蓄電モジュール

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JP2013168214A (ja) * 2012-02-14 2013-08-29 Hitachi Ltd 電池モジュール
JP5871067B2 (ja) * 2012-07-13 2016-03-01 日産自動車株式会社 電池構造体

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Publication number Priority date Publication date Assignee Title
JP2014089839A (ja) * 2012-10-29 2014-05-15 Sanyo Electric Co Ltd 電源装置及び電源装置を備える車両
US20160211086A1 (en) * 2015-01-15 2016-07-21 Ioxus, Inc. Apparatus for enclosing energy storage devices
WO2016208361A1 (fr) * 2015-06-25 2016-12-29 日立オートモティブシステムズ株式会社 Dispositif de stockage d'énergie
JP2017103109A (ja) * 2015-12-02 2017-06-08 株式会社オートネットワーク技術研究所 冷却部材及び蓄電モジュール

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