WO2022163478A1 - 電源装置及びその製造方法 - Google Patents
電源装置及びその製造方法 Download PDFInfo
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- WO2022163478A1 WO2022163478A1 PCT/JP2022/001893 JP2022001893W WO2022163478A1 WO 2022163478 A1 WO2022163478 A1 WO 2022163478A1 JP 2022001893 W JP2022001893 W JP 2022001893W WO 2022163478 A1 WO2022163478 A1 WO 2022163478A1
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- Prior art keywords
- battery
- power supply
- overvoltage
- unit
- circuit
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 7
- 238000007599 discharging Methods 0.000 claims abstract description 22
- 238000001514 detection method Methods 0.000 claims description 50
- 238000010438 heat treatment Methods 0.000 claims description 26
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000000155 melt Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
- 239000013256 coordination polymer Substances 0.000 description 6
- 238000007664 blowing Methods 0.000 description 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
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- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
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- 230000005611 electricity Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052987 metal hydride Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- -1 nickel metal hydride Chemical class 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Images
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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
-
- 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
- H01M50/583—Devices or arrangements for the interruption of current in response to current, e.g. fuses
-
- 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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
-
- 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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
-
- 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
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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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/284—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with incorporated circuit boards, e.g. printed circuit boards [PCB]
-
- 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
- H01M50/298—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the wiring of battery packs
-
- 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
- H01M50/569—Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals
-
- 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
-
- 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
- H01M2200/101—Bimetal
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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
- H01M2200/00—Safety devices for primary or secondary batteries
- H01M2200/10—Temperature sensitive devices
- H01M2200/103—Fuse
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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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/509—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the type of connection, e.g. mixed connections
- H01M50/51—Connection only in series
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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 power supply device and its manufacturing method.
- a power supply with a large number of secondary battery cells connected in series and parallel can be used as a backup power supply for servers, as a power supply for stationary power storage in homes, offices, and factories, as well as for hybrid vehicles and electric vehicles. It is used as a power source for driving vehicles such as automobiles, electric carts, and electric scooters, and as a power source for driving assisted bicycles and electric tools.
- a large number of secondary battery cells are connected in series to achieve high output.
- a power supply device 600 shown in the exploded perspective view of FIG. 6 includes a battery unit 602 holding a plurality of secondary battery cells 601, a control circuit for controlling charging and discharging of the secondary battery cells 601, and an overvoltage detection fuse.
- a circuit board 604 is provided.
- FIG. 7 shows a circuit diagram of a power supply device provided with such an overvoltage detection fuse.
- the power supply device 600 connects a battery unit 602 and a circuit unit 603 .
- the battery unit 602 has a large number of secondary battery cells 601 connected in series, and is provided with a battery side ground terminal 621G and a battery side total positive terminal 621H.
- the circuit unit 603 has a connection terminal 641 for connection with the battery unit 602 and external terminals 648 and 649.
- connection terminal 641 and the external terminal 648, and the connection terminal 641 and the external terminal 649 are respectively connected. It has a conductive path.
- a fuse module 634 , a charging switching element 644 and a discharging switching element 645 are inserted in a conductive path on the positive electrode side connecting the connection terminal 640 and the external terminal 648 .
- the fuse module 634 is configured by a combination of two thermal fuses 634a, 634a connected in series and a heating resistor 634b having one end connected to the connection point thereof.
- the other end of the heating resistor 634b is connected to a ground-side conductive path that connects the connection terminal 641 and the external terminal 649 via the heating resistor switching element 650 .
- the other end of the heating resistor 634b is not necessarily connected to the ground side, and may be connected to the intermediate potential of the secondary battery cell 601 depending on the circuit configuration.
- Various switching elements such as MOSFET can be appropriately used as the heating resistance switching element.
- connection terminals 641 are each connected to the control section 646 , and the control section 646 monitors the voltage of each secondary battery cell 601 .
- the control unit 646 is also connected to the gate of the heating resistance switching element 650, and when it determines that the voltage of the secondary battery cell 601 is in an abnormal state such as an overvoltage, the heating resistance switching element 650 is turned on. When turned ON, the heating resistor 634b is heated and the thermal fuse 634a is fused.
- One of the objects of the present invention is to provide a power supply device that avoids erroneous blowing of fuses during assembly and improves workability, and a method of manufacturing the same.
- a method of manufacturing a power supply device includes connecting at least a plurality of secondary battery cells in series, and connecting the series-connected low voltage side battery side ground to , a battery-side output on the high-voltage side; and a circuit unit electrically connected to the battery unit, controlling charging and discharging, and including an overvoltage detection fuse that detects and blows out an overvoltage. wherein the plurality of series-connected secondary battery cells are provided in the battery unit in a state in which a detachable lead member that connects the overvoltage detection fuse and the battery side output is removed.
- the overvoltage detection fuse of the circuit unit can be electrically separated by removing the detachable lead member when assembling the power supply device, and the battery-side intermediate terminal of the battery unit and the circuit-side intermediate terminal of the circuit unit are connected. It is possible to avoid a situation in which the overvoltage detection fuse is erroneously blown.
- the workability of connecting the circuit unit and the battery unit can be enhanced, and the production efficiency can be improved.
- the circuit unit includes an overvoltage protection circuit that monitors overvoltage of at least one of the plurality of secondary battery cells
- the overvoltage protection circuit is configured to fuse the overvoltage detection fuse when the overvoltage of the secondary battery cell is detected.
- the power supply device at least a plurality of secondary battery cells are connected in series, and the series-connected battery-side ground on the low voltage side and the battery-side output on the high voltage side are connected. and a circuit unit connected to the battery unit, wherein the battery unit is electrically connected to an intermediate potential of at least part of the plurality of series-connected secondary battery cells.
- the circuit unit includes one or more circuit-side intermediate terminals connected to at least one of the plurality of secondary battery cells via the one or more battery-side intermediate terminals.
- an overvoltage detection fuse connected to the battery-side output for detecting overvoltage of the plurality of secondary battery cells and blowing; and a detachable type interposed between the overvoltage detection fuse and the battery-side output. and a lead member.
- the circuit unit includes an overvoltage protection circuit that monitors overvoltage of the plurality of secondary battery cells, and the overvoltage The protection circuit is configured to fuse the overvoltage detection fuse when the overvoltage of the secondary battery cell is detected.
- the lead member is configured by a metal bus bar. With the above configuration, the lead member through which a large current flows can be easily attached to and detached from the circuit unit.
- the power supply device is such that the lead member includes a lead wire with a connector or a wire clip.
- a power supply device at least a plurality of secondary battery cells are connected in series, and the series-connected battery-side ground on the low voltage side and the battery-side output on the high voltage side are connected. and a circuit unit connected to the battery unit, wherein the battery unit has an intermediate potential of at least some of the plurality of series-connected secondary battery cells and an electric One or more battery-side intermediate terminals are connected, and the circuit unit is connected to at least one of the plurality of secondary battery cells via the one or more battery-side intermediate terminals. and an overvoltage detection fuse that is connected to the battery-side output and that detects an overvoltage of the plurality of secondary battery cells and blows the overvoltage detection fuse.
- a fuse and a heating resistor having one end connected to a connection point of the thermal fuse and generating heat when energized to melt the thermal fuse, wherein the overvoltage detection fuse is detachable from the circuit unit. It is configured.
- the overvoltage detection fuse of the circuit unit can be electrically separated by removing the detachable lead member when assembling the power supply device, and the battery-side intermediate terminal of the battery unit and the circuit-side intermediate terminal of the circuit unit are connected. It is possible to avoid a situation in which the overvoltage detection fuse is erroneously blown.
- the workability of connecting the circuit unit and the battery unit can be enhanced, and the production efficiency can be improved.
- FIG. 1 is an exploded perspective view showing a power supply device according to Embodiment 1 of the present invention
- FIG. 1 is a circuit diagram showing a power supply device according to Embodiment 1 of the present invention
- FIG. 3 is a circuit diagram showing a state in which lead members are removed during assembly of the power supply device of FIG. 2
- FIG. 1 is a plan view of a power supply device according to Embodiment 1
- FIG. 7 is a circuit diagram showing a state in which a fuse unit is removed when assembling the power supply device according to the second embodiment
- FIG. 11 is an exploded perspective view showing a conventional power supply device.
- FIG. 10 is a circuit diagram showing a power supply device provided with a conventional overvoltage detection fuse;
- the power supply device of the present invention is a backup power supply for a server, a power supply mounted in an electric vehicle such as a hybrid vehicle or an electric vehicle to supply power to a running motor, and a storage of power generated by natural energy sources such as solar power generation and wind power generation. It is used for various purposes such as a power source for storing power at night, and a power source for storing late-night power.
- a power supply device used as a backup power supply for a server will be described below as an embodiment of the present invention. [Embodiment 1]
- FIG. 1 An exploded perspective view of FIG. 1 shows a power supply device 100 according to Embodiment 1 of the present invention.
- a power supply device 100 shown in this figure includes a battery unit 2 and a circuit unit 3 mounted on one surface of the battery unit 2 .
- the battery unit 2 holds a plurality of secondary battery cells 1 .
- the circuit unit 3 has a circuit board 40 . (Secondary battery cell 1)
- Each secondary battery cell 1 is a cylindrical secondary battery cell having a cylindrical exterior can. Cylindrical secondary battery cell 1 has electrode surfaces on both end faces. A plurality of secondary battery cells 1 are connected at least in series. Preferably, the secondary battery cells 1 connected in series are further connected in parallel. The output of the battery assembly composed of the secondary battery cells 1 including series connection in this way is output from the power supply device 100 .
- the secondary battery cell 1 is a cylindrical lithium ion secondary battery. However, in the power supply device of the present invention, the secondary battery cells are not specified as cylindrical batteries, nor are they specified as lithium ion secondary batteries. Battery cells can also be all rechargeable batteries, such as nickel metal hydride battery cells. (Battery holder 10)
- the battery unit 2 is a member for holding a plurality of secondary battery cells 1.
- This battery unit 2 includes a battery holder 10 forming a cylindrical battery holding portion into which a cylindrical secondary battery cell 1 can be inserted.
- the battery holding portion is arranged in two stages, and the center of the cylinder of the battery holding portion is offset between the upper and lower stages, thereby suppressing the overall thickness.
- the battery holder 10 is made of a material having excellent insulation and heat resistance, such as polycarbonate ABC resin.
- the battery holder 10 is divided into a plurality of sub-holders, and configured to sandwich the secondary battery cells 1 from both sides. An intermediate portion of the secondary battery cell 1 is exposed from the sub-holder. Further, the lead plate 20 is fixed to the side surface of the battery holder 10 while the secondary battery cell 1 is sandwiched between the sub-holders, and the secondary battery cell 1 and the lead plate 20 are welded. A lead positioning guide along the outer shape of the lead plate 20 is formed on the side surface of the battery holder 10 so as to position the lead plate 20 at a predetermined position.
- the battery holder 10 includes a plurality of lead plates 20 and battery-side ground terminals 30 .
- a plurality of lead plates 20 are provided with battery-side intermediate terminals 21 .
- Battery-side intermediate terminal 21 is electrically connected to at least one of the plurality of secondary battery cells 1 . (Lead plate 20)
- Each lead plate 20 is arranged on the side surface of the battery holder 10 and connected to the electrode surfaces of the plurality of secondary battery cells 1 .
- the lead plate 20 is used to connect a plurality of secondary battery cells 1 in series and in parallel.
- a high-capacity secondary battery cell 1 such as a lithium ion secondary battery
- the potential of each lead plate 20 is detected in order to grasp the state of each secondary battery cell 1.
- 20 and the voltage of the assembly of the secondary battery cells 1 connected in parallel can be grasped.
- a battery assembly is formed of a total of 42 secondary battery cells 1, in which six secondary battery cells 1 are connected in parallel and seven sets of these are connected in series.
- the plurality of lead plates 20 electrically connect the electrode terminals of adjacent secondary battery cells 1 to each other. Further, among the plurality of lead plates 20, the lead plate serving as the ground side of the total output of the battery connection body in which the plurality of secondary battery cells 1 are electrically connected in series is designated as a ground lead plate 20G. side ground terminal 30 is connected. Also, the lead plate on the HIGH side of the total output of the battery connection is referred to as an output lead plate 20H.
- the battery-side ground terminal 30 is connected to the ground side of the total output obtained by electrically connecting a plurality of secondary battery cells 1 in series and/or in parallel.
- the battery-side ground terminal 30 is drawn out from the battery holder 10 .
- the upper surface of the battery holder 10 is used as a mounting surface 11 on which the circuit board 40 is mounted.
- a frame for holding the circuit board may be formed on the substrate mounting surface.
- a board holder for holding the circuit board may be provided separately.
- the circuit board 40 is mounted on the mounting surface 11 .
- the circuit board 40 is equipped with electronic circuits such as a voltage detection circuit that detects the intermediate potential of the battery assembly in which the secondary battery cells 1 are connected in series or in parallel, a control circuit that controls charging and discharging, and a safety circuit. be done.
- the intermediate potential of the plurality of series-connected secondary battery cells 1 forming the battery assembly is detected from the potential of the lead plate 20 and input to the voltage detection circuit.
- FIG. 1 A circuit diagram of this power supply device 100 is shown in FIG.
- a power supply device 100 shown in this figure includes a battery unit 2 and a circuit unit 3 . (Battery unit 2)
- the battery unit 2 has a plurality of secondary battery cells 1. A plurality of secondary battery cells 1 are connected in series. Although not shown in FIG. 2 for simplification of explanation, the series-connected battery connection bodies can also be connected in parallel.
- the battery unit 2 also includes a low-voltage side battery-side ground 21G and a high-voltage side battery-side output 21H, which are connected in series.
- the battery side ground 21G is connected to the ground lead plate 20G, and the battery side output 21H is connected to the output lead plate 20H.
- the battery unit 2 includes one or more battery-side intermediate terminals 21 electrically connected to the intermediate potential of at least some of the plurality of secondary battery cells 1 connected in series.
- the negative battery side ground 21G is connected to the circuit side ground terminal 46 in the circuit unit 3, and the positive side battery side output 21H is connected to the circuit side HIGH terminal 41H.
- the battery-side intermediate terminal 21 is connected to the controller 43 via the circuit-side intermediate terminal 41 .
- the circuit-side intermediate terminal 41 is connected to the negative-side external terminal 49 via a conductive path.
- the battery-side output 21H is connected to the external discharge terminal 47 and the external charge terminal 48 on the positive electrode side via conductive paths.
- a discharge path DP of the battery unit 2 is formed between the battery-side output 21H and the external discharge terminal 47 . Discharge control via the discharge path DP is performed by the host power supply or the system side.
- the fuse module 34, the charging switching element 44, and the discharging switching element 45 are inserted in series in the charging/discharging path CP connecting the connection terminal and the external charging terminal 48. Gates of the charging switching element 44 and the discharging switching element 45 are connected to the controller 43 .
- the discharge path DP connected to the external discharge terminal 47 is provided separately from the charge/discharge path CP connected to the external charge terminal 48 for the battery side output 21H.
- the discharge path is a large current of 100A class, such as a power supply for backup of an electricity storage server
- the present invention is not limited to a configuration in which such a path dedicated to discharge is separately provided, and can also be applied to a configuration having no discharge path. That is, in the circuit example of FIG. 2, the discharge path DP may be omitted.
- the overvoltage detection fuse is arranged on the charging/discharging path CP.
- the fuse module 34 is composed of thermal fuses 34a, 34a connected in series with each other, and a heating resistor 34b having one end connected to the connection point thereof.
- the other end of the heating resistor 34 b in the fuse module 34 is connected to the controller 43 . It may also be connected to a conducting path connecting the battery-side intermediate terminal 21 and the external terminal 49 via the heating resistor switching element.
- the gate of the heating resistor switching element is connected to the controller 43, and the controller 43 controls the heating resistor switching element to regulate the operation of the heating resistor 34b.
- the circuit unit 3 includes a circuit board on which a plurality of electronic components constituting a charging/discharging circuit and an overvoltage protection circuit are mounted.
- the circuit unit 3 includes a circuit-side intermediate terminal 41, an external discharge terminal 47, an external charging terminal 48, a control section 43, a fuse module 34, a lead member 50, a charging switching element 44, and a discharging switching element. 45 and a second overvoltage protection circuit 43B.
- the circuit-side intermediate terminal 41 is connected to at least one of the plurality of secondary battery cells 1 via one or more battery-side intermediate terminals 21 .
- the control unit 43 charges and discharges the battery unit 2 by controlling the charging switching element 44 and the discharging switching element 45 .
- FETs can be suitably used for the charging switching element 44 and the discharging switching element 45 .
- a p-channel type FET may also be used.
- a charging FET is arranged on the left side
- a discharging FET is arranged on the right side
- the drain terminals of these FETs are connected to each other.
- a discharging FET may be arranged on the right side
- a charging FET may be arranged on the right side, and the source terminals of the FETs may be connected to each other.
- the charging switching element 44 and the discharging switching element 45 may be composed of a plurality of FETs. For example, by connecting a plurality of FETs in parallel, an element with a small rated current can be used.
- control unit 43 implements an overvoltage protection circuit. That is, the intermediate potential obtained by connecting a plurality of secondary battery cells 1 in series is monitored via the battery-side intermediate terminal 21 and the circuit-side intermediate terminal 41, and when it reaches a predetermined voltage, it is regarded as an overvoltage, and the fuse module 34 is operated. to cut off the current.
- this circuit unit 3 comprises a second overvoltage protection circuit 43B.
- the second overvoltage protection circuit 43B monitors the charging current during charging of the battery unit 2 to improve safety, in addition to the overvoltage protection circuit of the control unit 43 described above.
- This second overvoltage protection circuit 43B may be omitted.
- the fuse module 34 functions as an overvoltage detection fuse that detects an overvoltage of the secondary battery cell 1 and blows it.
- the fuse module 34 includes two thermal fuses 34a, 34a connected in series, and a heating resistor 34b whose one end is connected to a connection point between the thermal fuses 34a and which generates heat when energized to melt the thermal fuse 34a.
- the heating resistor 634b is controlled by the controller 43 and the second overvoltage protection circuit 43B.
- a heating resistor switching element such as a MOSFET may be connected to the heating resistor 634b to operate the heating resistor 634b.
- the other end of the heating resistor switching element may be connected to the conductive path on the ground side, or may be connected to the intermediate potential of the battery unit 2, depending on the required driving voltage, withstand voltage, etc. . (Lead member 50)
- the lead member 50 is interposed between the fuse module 34 and the battery side output 21H.
- This lead member 50 is detachable from the circuit unit 3 .
- the fuse module 34 can be electrically separated as shown in FIG.
- the overvoltage protection circuit It is possible to avoid a situation in which the overvoltage detection fuse is erroneously blown due to malfunction of the overvoltage detection fuse. Further, by realizing random connection between the battery-side intermediate terminals 21 and the circuit-side intermediate terminals 41, the workability of connecting the circuit unit 3 and the battery unit 2 can be improved, and the production efficiency can be improved.
- the fuse module 34 interposed in the charge/discharge path CP is mounted on the circuit board 40 .
- the lead member 50 connects the fuse module 34 and the discharge path DP on the circuit board 40 .
- the lead member 50 can be composed of a lead wire, a metal bus bar, or the like.
- a fuse module including the overvoltage detection fuse may be prepared as a separate member instead of being mounted on the circuit board.
- the fuse module may be configured as a unit containing an overvoltage detection fuse or the like in a case.
- the present invention can also be applied in such a case, and the circuit board 40 and the fuse module 34 are connected by the lead member 50 .
- the fuse module 34 is mounted on a board different from the circuit board, and the lead members 50 formed of bus bars are used for electrical connection between them. With such a configuration, the lead member 50 through which a large current flows can be easily attached to and detached from the circuit unit 3 .
- the lead member 50 is not limited to such a bus bar, and may be composed of a flexible member such as a lead wire with a connector or a wire clip.
- the fuse module 34 can also be mounted on a circuit board. In this case, it is effective to configure the lead member 50 with a flexible member that is easy to attach and detach.
- the detachable type is not necessarily limited to the configuration in which the lead member 50 can be completely separated physically, and it is sufficient to take a mode in which the current supply can be physically cut off temporarily.
- the lead wire or wire clip described above one end is fixed to one of the fuse module and battery side output, and the other end is used as a free end, and a clip, round terminal, connector, etc.
- the fuse module and battery side output is attached to the other of the fuse module and battery side output. It may be configured to be connected by a method such as engagement, locking, clamping, insertion/extraction, screwing, or the like. Alternatively, one end of the lead wire may be fixed and the other end may be engaged with a notch of the lead plate. Alternatively, it may be physically cut off by providing an open/close switch. [Manufacturing method of power supply device]
- the circuit unit 3 is connected to the battery unit 2 with the detachable lead member 50 removed.
- the circuit unit 3 is placed on one surface of the battery unit 2, and the battery-side intermediate terminals 21 of the battery unit 2 are connected to the circuit-side intermediate terminals 41 of the circuit unit 3, respectively.
- the lead member 50 is fixed to the circuit unit 3, and the overvoltage detection fuse and the battery side output 21H are connected.
- the circuit units 3 including the overvoltage detection fuses are randomly connected to the battery series at approximately the same time, the circuit board can be attached without erroneously blowing the overvoltage detection fuses. Further, by realizing random connection, the substrate and the cell block can be connected in a short time, and the production efficiency can be improved.
- the lead member 50 that connects the fuse module 34 and the battery side output 21H is detachable, and the fuse module itself may be detachable.
- a configuration is shown in the circuit diagram of FIG. 5 as a power supply device 200 according to the second embodiment.
- the same reference numerals are assigned to the same members as in the first embodiment described above, and detailed description thereof will be omitted.
- the fuse module is detachable from the circuit unit 3 as a unit-type fuse unit 34'. Even with this configuration, when assembling the power supply device 200, the thermal fuse 34a can be physically de-energized.
- the lead member 50 according to the first embodiment needs only two terminals, while the fuse unit 34' according to the second embodiment needs three terminals.
- the power supply device and manufacturing method thereof according to the present invention can be suitably used as a backup power supply device that can be mounted on the power supply module of a computer server.
- backup power supply for wireless base stations such as mobile phones, storage power supply for domestic use and factories, power supply for street lights, etc., power storage combined with solar cells, backup power supply for traffic lights, etc., or EV driving
- applications such as power sources for plug-in hybrid electric vehicles, hybrid electric vehicles, and electric vehicles that are capable of switching between modes and HEV running modes.
Abstract
Description
[実施形態1]
(二次電池セル1)
(電池ホルダ10)
(リード板20)
(回路基板40)
(電池ユニット2)
(回路ユニット3)
(ヒューズモジュール34)
(リード部材50)
[電源装置の製造方法]
[実施形態2]
1…二次電池セル
2…電池ユニット
3…回路ユニット
10…電池ホルダ
11…載置面
20…リード板
20H…出力リード板
20G…グランドリード板
21…電池側中間端子
21H…電池側出力
21G…電池側グランド
30…電池側グランド端子
34…ヒューズモジュール;34’…ヒューズユニット
34a…温度ヒューズ;34b…加熱抵抗
40…回路基板
41…回路側中間端子
41H…回路側HIGH端子
43…制御部
43B…第二過電圧保護回路
44…充電用スイッチング素子
45…放電用スイッチング素子
46…回路側グランド端子
47…外部放電端子
48…外部充電端子
49…外部端子
50…リード部材
600…電源装置
601…二次電池セル
602…電池ユニット
603…回路ユニット
604…回路基板
621H…電池側総プラス端子
621G…電池側グランド端子
634…ヒューズモジュール
634a…温度ヒューズ
634b…加熱抵抗
640…接続端子
641…接続端子
644…充電用スイッチング素子
645…放電用スイッチング素子
646…制御部
648…外部端子
649…外部端子
650…加熱抵抗用スイッチング素子
DP…放電経路
CP…充放電経路
Claims (7)
- 複数の二次電池セルを少なくとも直列接続し、該直列接続された低電圧側の電池側グランドと、高電圧側の電池側出力とを備える電池ユニットと、
前記電池ユニットと電気接続され、充放電を制御すると共に、過電圧を検出して溶断する過電圧検知ヒューズを備える回路ユニットと、
を備える電源装置の製造方法であって、
前記過電圧検知ヒューズと前記電池側出力とを接続する、着脱式のリード部材を外した状態で、
前記電池ユニットに設けた、前記直列接続された複数の二次電池セルの少なくとも一部の中間電位と電気接続された一以上の電池側中間端子を、
前記回路ユニットに設けた、一以上の回路側中間端子と、それぞれ接続する工程と、
前記リード部材を前記回路ユニットに固定し、前記過電圧検知ヒューズと前記電池側出力とを接続する工程と、
を含む電源装置の製造方法。 - 請求項1に記載の電源装置の製造方法であって、
前記回路ユニットは、前記複数の二次電池セルの少なくともいずれかの過電圧を監視する過電圧保護回路を備えており、
前記過電圧保護回路は、前記二次電池セルの過電圧を検出すると、前記過電圧検知ヒューズを溶断するよう構成してなる電源装置の製造方法。 - 複数の二次電池セルを少なくとも直列接続し、該直列接続された低電圧側の電池側グランドと、高電圧側の電池側出力とを備える電池ユニットと、
前記電池ユニットと接続される回路ユニットと、
を備える電源装置であって、
前記電池ユニットは、前記直列接続された複数の二次電池セルの少なくとも一部の中間電位と電気接続された一以上の電池側中間端子を備え、
前記回路ユニットは、
前記複数の二次電池セルの少なくともいずれかと、前記一以上の電池側中間端子を介して接続される一以上の回路側中間端子と、
前記電池側出力と接続されて、該複数の二次電池セルの過電圧を検出して溶断する過電圧検知ヒューズと、
前記過電圧検知ヒューズと前記電池側出力との間に介在される、着脱式のリード部材と、
を備えてなる電源装置。 - 請求項3に記載の電源装置であって、
前記回路ユニットは、前記複数の二次電池セルの過電圧を監視する過電圧保護回路を備えており、
前記過電圧保護回路は、前記二次電池セルの過電圧を検出すると、前記過電圧検知ヒューズを溶断するよう構成してなる電源装置。 - 請求項3又は4に記載の電源装置であって、
前記リード部材が、金属製のバスバーで構成されてなる電源装置。 - 請求項3又は4に記載の電源装置であって、
前記リード部材が、コネクタ付きリード線、又はワイヤークリップを備えてなる電源装置。 - 複数の二次電池セルを少なくとも直列接続し、該直列接続された低電圧側の電池側グランドと、高電圧側の電池側出力とを備える電池ユニットと、
前記電池ユニットと接続される回路ユニットと、
を備える電源装置であって、
前記電池ユニットは、前記直列接続された複数の二次電池セルの少なくとも一部の中間電位と電気接続された一以上の電池側中間端子を備え、
前記回路ユニットは、
前記複数の二次電池セルの少なくともいずれかと、前記一以上の電池側中間端子を介して接続される一以上の回路側中間端子と、
前記電池側出力と接続されて、該複数の二次電池セルの過電圧を検出して溶断する過電圧検知ヒューズと、
を備えており、
前記過電圧検知ヒューズは、
直列接続された2つの温度ヒューズと、
前記温度ヒューズの接続点に一端が接続され、通電時に発熱して前記温度ヒューズを溶断する加熱抵抗と、
を備え、
前記過電圧検知ヒューズが、前記回路ユニットに対し着脱式のユニット状に構成されてなる電源装置。
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EP22745699.3A EP4287352A1 (en) | 2021-01-29 | 2022-01-20 | Power source device and method for manufacturing same |
JP2022578296A JPWO2022163478A1 (ja) | 2021-01-29 | 2022-01-20 | |
US18/262,029 US20240079749A1 (en) | 2021-01-29 | 2022-01-20 | Power source device and method for manufacturing same |
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2001176561A (ja) * | 1999-12-14 | 2001-06-29 | Toshiba Battery Co Ltd | 二次電池装置 |
JP2007143284A (ja) * | 2005-11-17 | 2007-06-07 | Matsushita Electric Works Ltd | 電動工具用の電池パック |
JP2009097954A (ja) * | 2007-10-16 | 2009-05-07 | Sony Corp | 電池パックおよび二次電池の残容量補正方法 |
JP2014102968A (ja) | 2012-11-20 | 2014-06-05 | Sanyo Electric Co Ltd | 電池パックとその製造方法 |
JP2018082535A (ja) * | 2016-11-15 | 2018-05-24 | 株式会社ケーヒン | 回路保護装置及び電源監視装置 |
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- 2022-01-20 JP JP2022578296A patent/JPWO2022163478A1/ja active Pending
- 2022-01-20 US US18/262,029 patent/US20240079749A1/en active Pending
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- 2022-01-20 WO PCT/JP2022/001893 patent/WO2022163478A1/ja active Application Filing
Patent Citations (5)
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JP2001176561A (ja) * | 1999-12-14 | 2001-06-29 | Toshiba Battery Co Ltd | 二次電池装置 |
JP2007143284A (ja) * | 2005-11-17 | 2007-06-07 | Matsushita Electric Works Ltd | 電動工具用の電池パック |
JP2009097954A (ja) * | 2007-10-16 | 2009-05-07 | Sony Corp | 電池パックおよび二次電池の残容量補正方法 |
JP2014102968A (ja) | 2012-11-20 | 2014-06-05 | Sanyo Electric Co Ltd | 電池パックとその製造方法 |
JP2018082535A (ja) * | 2016-11-15 | 2018-05-24 | 株式会社ケーヒン | 回路保護装置及び電源監視装置 |
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