WO2014125806A1 - 電池ブロック - Google Patents
電池ブロック Download PDFInfo
- Publication number
- WO2014125806A1 WO2014125806A1 PCT/JP2014/000689 JP2014000689W WO2014125806A1 WO 2014125806 A1 WO2014125806 A1 WO 2014125806A1 JP 2014000689 W JP2014000689 W JP 2014000689W WO 2014125806 A1 WO2014125806 A1 WO 2014125806A1
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- WIPO (PCT)
- Prior art keywords
- current collector
- batteries
- battery
- negative electrode
- fuse
- Prior art date
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Classifications
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/317—Re-sealable arrangements
-
- 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
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/342—Non-re-sealable arrangements
-
- 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
- H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
-
- 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
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/342—Non-re-sealable arrangements
- H01M50/3425—Non-re-sealable arrangements in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/574—Devices or arrangements for the interruption of current
- H01M50/581—Devices or arrangements for the interruption of current in response to temperature
-
- 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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2200/00—Safety devices for primary or secondary batteries
- H01M2200/10—Temperature sensitive devices
- H01M2200/103—Fuse
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2200/00—Safety devices for primary or secondary batteries
- H01M2200/20—Pressure-sensitive devices
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- 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 block configured by connecting a plurality of batteries to each other.
- the battery using the electrochemical reaction is provided with a safety valve for when the internal gas pressure becomes high and a fuse for when the temperature becomes high.
- Patent Document 1 as a power supply device, a plurality of batteries having safety valves are housed in a case, a battery chamber is provided on the upper side of the case, an exhaust chamber is provided on the lower side, and the safety valve is provided at the lower end of the battery.
- a battery chamber is provided on the lower side in the case
- the exhaust chamber is provided on the upper side
- the safety valve is provided on the upper end of the battery.
- a battery block includes a plurality of batteries arranged in safety, a positive current collector for connecting and collecting positive electrodes of a plurality of batteries, and a negative electrode of a plurality of batteries.
- a negative-side current collector that connects and collects current, and of the positive-side current collector and the negative-side current collector connected to a plurality of batteries, the one on which the safety valve is provided is defined as the one-side current collector
- the fuses are arranged corresponding to the respective batteries on the other side current collector that is opposite to the one side current collector with respect to the arrangement.
- the safety valve and the fuse are separately provided on the different current collector side. If the safety valve and the fuse are installed on the same current collector side, the fuse that is blown by the discharge from the safety valve may be reconnected after the fuse is blown. Not affected by emissions. Therefore, the safety valve and the fuse can be appropriately arranged.
- FIG. 2 is a cross-sectional view taken along line AA in FIG.
- FIG. 2 is sectional drawing of the battery which comprises the battery block in an example of embodiment which concerns on this invention.
- It is an enlarged view of the part of the safety valve of the battery block in an example of the embodiment according to the present invention.
- FIG. 1 it is a figure which shows the example in which the flow guide part which guides the flow of the waste gas from a safety valve is provided.
- FIG. 7 is a cross-sectional view taken along line AA in FIG. 6.
- FIG. 1 It is an enlarged view of the part of the flow guide part of FIG. It is a perspective view of the battery block in the modification of embodiment which concerns on this invention, and is a figure which shows when a duct chamber is provided. It is sectional drawing in the AA of FIG.
- FIG. 1 is a perspective view showing the battery block 1.
- the battery block 1 is obtained by connecting a plurality of batteries in parallel to obtain a predetermined capacity.
- a duct cover 3 that covers the battery block 1 and configures the duct chamber 2 is shown.
- FIG. 2 is a cross-sectional view taken along line AA in FIG.
- the battery block 1 has a plurality of batteries 4, 5, etc., in which each positive electrode side is aligned on one side and each negative electrode side is aligned on the other side, arranged in a predetermined arrangement relationship, held in a case 7, and held on the positive electrode side on the positive electrode side
- the current collector 8 is disposed, the negative current collector 9 is disposed on the negative electrode side, and the positive current collector 8 and the negative current collector 9 are fastened with appropriate fastening members via holders 10 and 11. It is.
- the battery block 1 is formed by connecting 20 batteries in parallel. In FIG. 2, two of the batteries 4 and 5 are shown. Below, the batteries 4 and 5 are demonstrated on behalf of 20 batteries.
- Batteries 4 and 5 are rechargeable secondary batteries.
- a lithium ion battery is used as the secondary battery.
- a nickel metal hydride battery, an alkaline battery, or the like may be used.
- the batteries 4 and 5 have a cylindrical outer shape. Of the both ends of the cylindrical shape, one end is used as a positive terminal and the other end is used as a negative terminal.
- An example of the batteries 4 and 5 is a lithium ion battery having a diameter of 18 mm, a height of 65 mm, a voltage between terminals of 3.6 V, and a capacity of 2.5 Ah. This is an illustrative example, and other dimensions and characteristic values may be used.
- the batteries 4 and 5 are not limited to cylindrical batteries, but may be batteries having other external shapes.
- Batteries 4 and 5 have a safety valve 12.
- the safety valve 12 has a function of releasing as exhaust gas from the inside of the battery to the outside when the pressure of the gas generated by the electrochemical reaction performed inside the batteries 4 and 5 exceeds a predetermined threshold pressure.
- the safety valve 12 is disposed on the positive electrode side of the batteries 4 and 5.
- the safety valve 12 is provided in each of the 20 batteries. Details of the safety valve 12 will be described later with reference to FIG.
- the batteries 4 and 5 have a function of releasing the exhaust gas from the inside of the battery to the outside as the exhaust gas when the pressure of the gas generated by the electrochemical reaction performed inside the batteries 4 and 5 exceeds a predetermined threshold pressure. You may prepare for.
- the case 7 is a holding container that holds the batteries 4 and 5 in a predetermined arrangement relationship.
- the case 7 is a frame body having the same height as the batteries 4 and 5 and provided with 20 battery storage portions that are opened at both ends in the height direction. It is stored and arranged in one of the parts.
- the arrangement of the battery storage units is a staggered arrangement that minimizes the gap between adjacent batteries.
- a material made of aluminum and having a predetermined shape by extrusion molding or die casting can be used.
- the H direction, the L direction, and the W direction are shown as three axis directions orthogonal to each other.
- the H direction is the longitudinal direction of the batteries 4 and 5.
- the L direction and the W direction indicate the arrangement direction of the two-dimensional arrangement of the batteries 4 and 5.
- the larger dimension is the L direction and the smaller dimension is the W direction.
- 20 electrode portions corresponding to the 20 batteries 4 and 5 are shown in the positive-side current collector 8, but three battery rows are arranged in the W direction. In the battery row, seven, six, and seven batteries are arranged along the L direction.
- the positive electrode current collector 8 is a connecting member that is arranged so as to close the opening on one side of the case 7 and electrically connects the positive electrodes of the batteries 4 and 5 that are aligned. As shown in FIG. 2, the positive electrode side current collector 8 includes a positive electrode side insulating plate 13, a positive electrode current collector 14, and a positive electrode plate 15.
- the positive-side insulating plate 13 is a plate material that is disposed between the case 7, the positive-electrode current collector 14, and the positive-electrode plate 15 and electrically insulates them.
- the positive-side insulating plate 13 is provided with 20 openings for protruding the positive electrodes of the batteries 4 and 5.
- the positive electrode current collector 14 is a thin plate having 20 electrode contact portions disposed in a positional relationship in which the positive electrode side electrodes of the batteries 4 and 5 are individually elastically contacted.
- a metal thin plate having electrical conductivity formed with an electrode contact portion having a predetermined shape by etching or pressing can be used.
- the positive electrode plate 15 is an electrode plate that is electrically connected to the positive electrode current collector 14 and interconnects the 20 electrode contact portions to form one positive electrode side output terminal.
- the positive electrode plate 15 is provided with 20 openings so that each electrode contact portion of the positive electrode current collector 14 can be elastically deformed.
- a metal thin plate having electrical conductivity and having an appropriate thickness and strength and having an electrode contact portion having a predetermined shape formed by etching or pressing can be used.
- the negative electrode side current collector 9 is a connecting member that is disposed in the opening on the other side of the case 7 and electrically connects the negative electrodes of the batteries 4 and 5 that are aligned. As shown in FIG. 2, the negative electrode side current collector 9 includes a negative electrode side insulating plate 16, a negative electrode current collector 17, and a negative electrode plate 18.
- the negative electrode side insulating plate 16 is a plate material that is disposed between the case 7, the negative electrode current collector 17, and the negative electrode plate 18, and electrically insulates them.
- the negative electrode-side insulating plate 16 is provided with 20 openings that expose the negative electrodes of the batteries 4 and 5.
- a plastic molded product or a plastic sheet having predetermined heat resistance and electrical insulation and processed into a predetermined shape is used as the negative electrode side insulating plate 16.
- the negative electrode current collector 17 is a thin plate having 20 electrode contact portions arranged in a positional relationship in which the negative electrode side electrodes of the batteries 4 and 5 are individually elastically contacted.
- a thin metal plate having electrical conductivity formed with an electrode contact portion having a predetermined shape by etching or pressing can be used.
- a fuse 19 is provided on the negative electrode current collector 17.
- the fuse 19 is a temperature safety device that blows when the temperature of the batteries 4 and 5 exceeds a predetermined threshold temperature, and electrically disconnects the electrode contact portion and the negative electrode plate 18.
- the fuse 19 is provided corresponding to each of the 20 electrode contact portions. The structure of the fuse 19 will be described later with reference to FIG.
- the battery block 1 maintains an electrical connection even if some of the fuses 19 of the 20 batteries 4 and 5 connected in parallel are blown. Can do.
- the wiring can be simplified and the space of the battery block 1 can be saved.
- the negative electrode plate 18 is an electrode plate that is electrically connected to the negative electrode current collector 17 and interconnects each of the 20 electrode contact portions through the fuse 19 to form one negative electrode side output terminal.
- the negative electrode plate 18 is provided with 20 openings so that each electrode contact portion of the negative electrode current collector 17 can be elastically deformed.
- a metal thin plate having electrical conductivity and having an appropriate thickness and strength and having an electrode contact portion having a predetermined shape formed by etching or pressing can be used.
- the holders 10 and 11 fasten the positive electrode side current collector 8 disposed on one side of the case 7 and the negative electrode side current collector 9 disposed on the other side using a fastening member that is not illustrated, This is a member for integrating the case 7, the positive current collector 8 and the negative current collector 9 as a whole.
- the holders 10 and 11 are arranged so as to be directed to the opposing sides of the outer shape of the case 7. In FIG. 1, a holder 10 is disposed at one end of both ends of the case 7 in the L direction, and a holder 11 is disposed at the other end. As the holders 10 and 11, those obtained by processing an insulating plate into a predetermined shape can be used. Note that the holders 10 and 11 may not be configured separately.
- a side portion that covers the side surface of the case 7 and an upper portion that covers the positive electrode side of the batteries 4 and 5 may be configured integrally. 7 and the lower part covering the negative electrode side of the batteries 4 and 5 may be integrally configured.
- fastening the positive current collector 8 and the negative current collector 9 to the holders 10 and 11 the following method can be used.
- the holders 10 and 11 are respectively provided with female thread portions at the positive electrode side end and the negative electrode side end along the H direction.
- bolt through holes are provided in the positive current collector 8 and the negative current collector 9.
- the female threaded portion at the end of the positive electrode side of the holder 10, 11 and the bolt through hole of the positive current collector 8 are aligned, and the bolt is passed through the bolt through hole of the positive current collector 8. Screw into the female thread at the end of the positive electrode.
- the female screw portion at the negative electrode side end of the holder 10, 11 and the bolt through hole of the negative electrode current collector 9 are aligned, and the bolt is passed through the bolt through hole of the negative electrode current collector 9. 11 is screwed into the female thread at the end on the negative electrode side.
- the duct cover 3 covers the positive electrode side end of the battery block 1 and is airtightly joined to the side surface of the case 7 extending in the L direction. It is a part that forms a duct chamber 2 through which a gas can flow. Since the batteries 4 and 5 constituting the battery block 1 have the safety valve 12 on the positive electrode side, by using the duct chamber 2, the exhaust gas discharged from the safety valve 12 can be passed through the duct chamber 2 without leaking to the other. It can be discharged to the outside from a predetermined exhaust port. In FIG. 1, the exhaust gas flow 20 is indicated by white arrows. As this duct cover 3, what was processed into the predetermined shape using the material which has predetermined heat resistance and intensity
- FIG. 3 is a cross-sectional view of the battery 4.
- the battery 4 includes a metal outer can 22 having an upper opening, an electrode group 23 and an electrolyte 24 accommodated therein, and a lid 25 that closes the upper opening.
- the safety valve 12 is disposed on the lid portion 25.
- the electrode group 23 is wound with a positive electrode body 26, a negative electrode body 27, and a separator 28 interposed therebetween.
- the positive electrode body 26 includes a lithium-containing composite oxide.
- the negative electrode body 27 includes, for example, graphite that reversibly occludes and releases lithium ions.
- An insulating plate 29 is disposed on the bottom side of the electrode group 23, and an insulating plate 30 is disposed on the upper side.
- the negative electrode lead 31 is pulled out from the negative electrode body 27 of the electrode group 23, is routed to the bottom of the insulating plate 29, and is welded to the outer can 22. As a result, the metal outer can 22 becomes the negative electrode 32.
- the positive electrode lead 33 is pulled out from the positive electrode body 26 of the electrode group 23, is routed to the upper side of the insulating plate 30, and is welded to the lower sealing body 34 of the lid portion 25.
- the lid portion 25 is formed by stacking the lower sealing body 34, the upper sealing body 35, the safety valve 12, and the positive electrode 37, and integrating the outer can 22 with flexible fixing members 36 and 38.
- the safety valve 12 is a metal sheet that breaks when the pressure of a gas generated by an electrochemical reaction performed inside the battery 4 exceeds a predetermined threshold pressure, and discharges it from the inside of the battery 4 to the outside as an exhaust gas.
- a predetermined threshold pressure a gas generated by an electrochemical reaction performed inside the battery 4
- the gas leaks upward from the gap between the insulating plate 30 and the outer can 22, and passes through the first opening 39 and the second opening 40 to the safety valve 12. Gas pressure is applied. When this gas pressure exceeds the threshold pressure, the safety valve 12, which is a metal sheet, is broken, and the gas is released to the outside of the battery 4 through the third opening 41.
- FIG. 4 is a diagram showing the positive electrode side of the battery 4, FIG. 4 (a) is a cross-sectional view, and FIG. 4 (b) is a top view of FIG. 4 (a).
- the safety valve 12 is a threshold pressure P 0 the gas pressure at the time of break, when the internal pressure P of the battery 4 is equal to or less than the threshold pressure P 0, the safety valve 12 will not break, while metal sheets, gas battery Stay inside 4.
- the safety valve 12 is broken, whereby the high-pressure gas inside the battery 4 flows out of the battery 4 through the third opening 41.
- the third opening 41 corresponds to an exhaust gas outlet. In this manner, by using the safety valve 12 prevents abnormal conditions remains inside of the battery 4 has exceeded a threshold pressure P 0.
- a fourth opening 43 is formed around the electrode contact portion 42 of the positive electrode current collector 14 so that the electrode contact portion 42 has a plate spring shape with one end as a fixed end. It is provided in an annular shape.
- the electrode contact portion 42 comes into contact with the protruding portion of the positive electrode 37 of the battery 4 by appropriately bending and shaping the leaf spring shape. As a result, the positive electrode 37 of the battery 4 and the positive current collector 8 are electrically connected.
- the fourth opening 43 has a function of forming the electrode contact portion 42 in a plate spring shape with one of the fixed ends, and the first opening 39 when the internal pressure P of the battery 4 exceeds the threshold pressure P 0.
- the gas flowing out of the battery 4 through the second opening 40, the third opening 41, and the fourth opening 43 is discharged into the duct chamber 2 as exhaust gas.
- the safety valve 12 releases the exhaust gas as an exhaust gas from the inside of the battery 4 when the pressure of the gas generated by the electrochemical reaction performed inside the battery 4 exceeds a predetermined threshold pressure P 0 .
- the safety valve 12 is a metal sheet, but instead, a safety valve spring that closes the second opening 40 and presses the valve body with an appropriate pressing force can be used as the safety valve 12.
- the pressing force of the safety valve spring is set so as to correspond to the threshold pressure P 0 .
- any valve that can define the threshold pressure P 0 can be used as the safety valve 12.
- FIG. 5A is a cross-sectional view of the battery 4 on the negative electrode side, in which the negative electrode 32 is shown.
- FIG. 5B is a bottom view of FIG. 5A, and particularly shows a plan view of the negative electrode current collector 17.
- the negative electrode current collector 17 is obtained by forming a predetermined conductor pattern 45 on a flexible thin film insulating film 44.
- the conductor pattern 45 is formed by connecting the electrode contact portion 46 on the negative electrode side, the fuse 19, and the current collector plate main body connection portion 47.
- a polyimide film is formed as a flexible thin film insulating film 44, and a copper wiring pattern or a gold wiring pattern having a predetermined thickness is formed thereon as a conductor pattern 45 in a predetermined pattern shape. Can be used.
- the thin film insulating film 44 is provided with a U-shaped fifth opening 48 around the electrode contact portion 46 so as to have a leaf spring shape with one end being a fixed end.
- the electrode contact portion 46 is in contact with the negative electrode 32 of the battery 4 by appropriately bending and shaping the leaf spring shape.
- the fuse 19 is a current interruption element, and is made of a material that may be reconnected after being interrupted.
- the fuse 19 is blown when the current of the battery 4 becomes an overcurrent and the temperature of the fuse 19 exceeds a predetermined threshold temperature T 0 .
- the fuse 19 is set to a thin and long wiring pattern so as to have a predetermined high resistance value.
- the fuse 19 has one end connected to the electrode contact portion 46 and the other end connected to the current collector plate body connecting portion 47.
- the current collector plate main body connecting portion 47 is electrically connected to the negative electrode plate 18 which is a current collector plate main body.
- the fuse 19 is provided between the electrode contact portion 46 and the negative electrode plate 18, and is blown when the temperature of the fuse 19 exceeds a predetermined threshold temperature T 0 . Electrically interrupts the gap.
- the fuse 19 is used as the fuse 19 and the threshold temperature T 0 is defined corresponding to the threshold current at which the resistance blows.
- the fuse 19 may be made of a material whose melting point of the resistor can define the threshold temperature T 0 .
- a fuse 19 made of a material having a predetermined threshold melting point is connected between the electrode contact portion 46 and the current collector plate connecting portion 47.
- any one that can define the threshold temperature T 0 can be used as the fuse 19.
- the safety valve 12 is provided on the positive side of the batteries 4 and 5 and the fuse 19 is provided on the negative side, the function of the fuse is not affected by the discharge from the safety valve. If the safety valve 12 and the fuse 19 are collected on the positive electrode side or the negative electrode side of the battery, there is a possibility that the fuse blown by the discharge from the safety valve 12 is reconnected after the fuse 19 is blown. For example, when the exhaust gas from the exhaust gas is a conductive material, the fuse 19 once blown may be reconnected, or the adjacent fuses 19 that are not blown may be short-circuited by the conductive material.
- the safety valve 12 is provided on the negative side of the batteries 4 and 5 and the fuse 19 is provided on the positive side.
- the one provided with the safety valve 12 is the one current collector, which is the opposite side of the one current collector.
- a fuse 19 that melts in response to the temperature may be disposed in the other side current collector corresponding to each of the batteries 4 and 5.
- the exhaust gas from the safety valve 12 passes through the fourth opening 43 of the positive electrode current collector 14 and is jetted into the duct chamber 2 formed by the duct cover 3.
- This ejection direction is not the same as the exhaust gas flow 20 indicated by the white arrow in FIG. 1, but rather is a direction perpendicular to the exhaust gas flow 20. If the direction ejected to the duct chamber 2 through the fourth opening 43 can be guided to the flow direction 20 of the exhaust gas in the duct chamber 2, the exhaust gas can be discharged to the outside more quickly.
- FIGS. 6 corresponds to FIG. 1
- FIG. 7 corresponds to FIG. 2
- FIGS. 8 (a) and 8 (b) correspond to FIGS. 4 (a) and 4 (b), respectively.
- the horizontal direction of the paper surface is the W direction
- the horizontal direction of the paper surface is the L direction, that is, the flow of exhaust gas in the duct chamber 2.
- the direction is parallel to the direction 20.
- the battery block 51 has the same configuration as that of the battery block 1 in FIG. 1 except that the positive electrode plate 52 has a flow guide portion 53. Therefore, hereinafter, the flow guide portion 53 will be mainly described.
- the flow guide portion 53 is provided corresponding to each of the 20 batteries as shown in FIG. As shown in FIG. 7, the flow guide portion 53 has a ceiling portion 54 lifted from the positive electrode plate 52 and both sides of the ceiling portion 54 when viewed from the L direction, that is, the exhaust gas flow direction 20 in the duct chamber 2. It is a spout surrounded by the left and right wall portions 55 and 56 connected to. As shown in FIG. 8, the flow guide portion 53 is provided so as to cover a substantially half region of the fourth opening portion 43 provided in the positive electrode current collector 14.
- the ceiling part 54 of the flow guide part 53 has an inclination angle with respect to the positive electrode current collector 14 as shown in FIG. The inclination angle is acute and is preferably about 30 to 45 degrees.
- the duct chamber 2 When the safety valve 12 is provided on the negative electrode side of the batteries 4 and 5, the duct chamber 2 must also be provided on the negative electrode side of the batteries 4 and 5. In this case, the flow guide portion 53 is provided on the negative electrode plate 18 corresponding to each of the fifth openings 48. Thereby, the exhaust gas ejected from the safety valve 12 on the negative electrode side of the batteries 4 and 5 can be discharged to the outside of the duct chamber 2 more quickly and smoothly without stagnation.
- FIG. 9 is a perspective view of a battery block in a modification of the embodiment according to the present invention, and shows a state where a duct chamber is provided.
- 10 is a cross-sectional view taken along line AA in FIG.
- the description will be made assuming the batteries 4 and 5 having a function of releasing the exhaust gas from the negative electrode side, and different portions from the embodiment will be described.
- one side is an upper side of the paper surface along the H direction toward the duct chamber 2, and the other side is a lower side of the paper surface along the H direction opposite to the side toward the duct chamber 2. On the side.
- the battery block 1 has a plurality of batteries 4, 5, etc., in which the negative electrode sides are aligned on one side, the positive electrode sides are aligned on the other side, arranged in a predetermined arrangement relationship, held in a case 7, and held on the positive electrode side.
- the current collector 8 is disposed, the negative current collector 9 is disposed on the negative electrode side, and the positive current collector 8 and the negative current collector 9 are fastened with appropriate fastening members via holders 10 and 11. is there.
- the case 7 is a frame that is shorter than the height of the batteries 4 and 5 and is provided with 20 battery storage portions that are open at both ends in the height direction. Each of the batteries 4 and 5 is one of the battery storage portions. It is stored and arranged. A space is formed in a part of the side surfaces of the batteries 4 and 5 that are not covered by the case 7. By making the case 7 shorter than the height of the batteries 4 and 5, the material cost of the case 7 can be reduced. In addition, natural wind can be introduced into the side surfaces of the batteries 4 and 5 that are not covered with the case 7 using the formed space.
- the case 7 may be disposed so that a part of the batteries 4 and 5 are in contact with each other in the height direction, in the vicinity of the positive electrode side surface, in the vicinity of the negative electrode side surface, or from the positive electrode side surface and the negative electrode side surface. You may arrange in. Further, the case 7 is disposed in the vicinity of the negative electrode side surface of the batteries 4 and 5, and the case 7, the negative electrode current collector 9, and the negative electrode current collector 17 are integrated without using the negative electrode side insulating plate 16. It may be. By integrating the case 7, the negative electrode side current collector 9, and the negative electrode current collector 17, the case 7 can be used as a current collector and the loading members of the battery block 1 can be reduced. .
Abstract
Description
Claims (4)
- 安全弁を有し、整列配置された複数の電池と、
前記複数の電池の正極側をそれぞれ接続して集電する正極側集電部と、
前記複数の電池の負極側をそれぞれ接続して集電する負極側集電部と、
を備え、
前記複数の電池に接続される前記正極側集電部または前記負極側集電部のうち、前記安全弁が設けられる方を一方側集電部として、前記整列配置について前記一方側集電部とは反対側となる他方側集電部に、ヒューズが前記電池のそれぞれに対応して配置される、電池ブロック。 - 請求項1に記載の電池ブロックにおいて、
前記一方側集電部は、
前記電池のそれぞれの安全弁の排ガス噴出穴に対応して設けられる複数の開口部と、
前記開口部に設けられ、前記排ガス噴出穴から噴出される排ガスの流れを予め定めた排気方向となるように導く流れガイド部と、
を有する、電池ブロック。 - 請求項1に記載の電池ブロックにおいて、
前記他方側集電部は、
導電性を有する集電板本体と、
前記電池の電極にそれぞれ接触する位置関係で配置される複数の電極接触部と、
を有し、
前記ヒューズは、一端部が前記電極接触部に接続され、他端部が前記集電板本体に接続されて配置される、電池ブロック。 - 請求項3に記載の電池ブロックにおいて、
前記電極接触部、前記ヒューズ、及び前記ヒューズの前記他端部に設けられる集電板本体接続部が可撓性フィルムの上に形成される、電池ブロック。
Priority Applications (3)
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CN201480008671.0A CN104995762A (zh) | 2013-02-14 | 2014-02-10 | 电池块 |
JP2015500140A JP6121516B2 (ja) | 2013-02-14 | 2014-02-10 | 電池ブロック |
US14/766,780 US10396326B2 (en) | 2013-02-14 | 2014-02-10 | Battery block |
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JP2013027092 | 2013-02-14 | ||
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WO2014125806A1 true WO2014125806A1 (ja) | 2014-08-21 |
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PCT/JP2014/000689 WO2014125806A1 (ja) | 2013-02-14 | 2014-02-10 | 電池ブロック |
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US (1) | US10396326B2 (ja) |
JP (1) | JP6121516B2 (ja) |
CN (1) | CN104995762A (ja) |
WO (1) | WO2014125806A1 (ja) |
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WO2018100983A1 (ja) * | 2016-11-30 | 2018-06-07 | パナソニックIpマネジメント株式会社 | 電池モジュール |
WO2018123574A1 (ja) * | 2016-12-27 | 2018-07-05 | パナソニックIpマネジメント株式会社 | 電池モジュール |
WO2019044582A1 (ja) * | 2017-08-31 | 2019-03-07 | パナソニックIpマネジメント株式会社 | 電池ブロック及びそれを備えた電池モジュール |
WO2019044724A1 (ja) * | 2017-09-04 | 2019-03-07 | パナソニックIpマネジメント株式会社 | 電池モジュール |
JP7461722B2 (ja) | 2019-07-30 | 2024-04-04 | パナソニックエナジー株式会社 | 電源装置 |
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JP6938493B2 (ja) * | 2016-06-30 | 2021-09-22 | 三洋電機株式会社 | 電池ブロック |
JP6670272B2 (ja) * | 2017-06-28 | 2020-03-18 | 本田技研工業株式会社 | バッテリモジュール |
CN111403657B (zh) * | 2020-03-31 | 2022-04-01 | 重庆长安新能源汽车科技有限公司 | 一种电池热失控气体排放装置、电池模组及汽车 |
CN112373304B (zh) * | 2020-09-07 | 2022-05-13 | 万向一二三股份公司 | 一种降低电池包热失控扩散风险的电池箱及控制系统 |
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JP7165897B2 (ja) | 2017-08-31 | 2022-11-07 | パナソニックIpマネジメント株式会社 | 電池ブロック及びそれを備えた電池モジュール |
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JPWO2019044724A1 (ja) * | 2017-09-04 | 2020-09-24 | パナソニックIpマネジメント株式会社 | 電池モジュール |
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Also Published As
Publication number | Publication date |
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JPWO2014125806A1 (ja) | 2017-02-02 |
CN104995762A (zh) | 2015-10-21 |
US10396326B2 (en) | 2019-08-27 |
JP6121516B2 (ja) | 2017-04-26 |
US20150380700A1 (en) | 2015-12-31 |
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