WO2017014007A1 - 電池パック - Google Patents
電池パック Download PDFInfo
- Publication number
- WO2017014007A1 WO2017014007A1 PCT/JP2016/068987 JP2016068987W WO2017014007A1 WO 2017014007 A1 WO2017014007 A1 WO 2017014007A1 JP 2016068987 W JP2016068987 W JP 2016068987W WO 2017014007 A1 WO2017014007 A1 WO 2017014007A1
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- WIPO (PCT)
- Prior art keywords
- battery
- battery pack
- information
- terminal
- signal
- Prior art date
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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
- H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/46—Accumulators structurally combined with charging apparatus
-
- 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
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
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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
- H01M50/296—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by terminals of battery packs
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
- H02J7/00036—Charger exchanging data with battery
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
- H02J7/00038—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange using passive battery identification means, e.g. resistors or capacitors
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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
- H01M10/44—Methods for charging or discharging
- H01M10/443—Methods for charging or discharging in response to temperature
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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
- H01M2010/4278—Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
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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
- H01M2220/00—Batteries for particular applications
- H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
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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
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
- H02J7/00045—Authentication, i.e. circuits for checking compatibility between one component, e.g. a battery or a battery charger, and another component, e.g. a power source
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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 pack used as a power source for electric tools, accessory devices, and the like.
- battery packs for electric tools have compatibility so that they can be used for various electric tools and accessory devices.
- the battery pack is connected to a charging device, a power tool, or the like via a predetermined connection terminal and controlled, but changing the role of the terminal impairs the compatibility described above.
- the terminal of an existing battery pack plays a role of transmitting temperature information and battery type information
- the control based on the temperature information and the battery type information cannot be performed.
- the present invention provides a temperature detecting element for monitoring the temperature of a battery, a battery type determining element for determining the type of the battery, and a first for transmitting information on the temperature detecting element to an external device.
- a battery pack having one terminal and a second terminal for transmitting information on the battery type determination element to the external device, wherein information from the temperature detection element and the battery type determination element is transmitted to the external device. It has the cutoff means which interrupts
- information in the battery pack can be transmitted or received to an external device without newly providing a dedicated terminal.
- circuit diagram which shows the state which connected the battery pack used as this invention, and the charging device which is an external apparatus. It is an example of the circuit structure for detecting temperature information in FIG. It is an example of the circuit structure for detecting battery type information in FIG. It is an example of the circuit diagram which shows the state which connected the battery pack which becomes this invention, and the information transmission / reception apparatus which is an external device. It is an example of the control flowchart of the battery pack which becomes this invention.
- FIG. 1 is a circuit diagram showing an embodiment of a state in which a battery pack and a charging device according to the present invention are connected.
- reference numeral 1 denotes a charging device for charging the battery pack 20, and the configuration thereof will be described below.
- the charging device 1 is an example of an external device.
- Reference numeral 2 denotes an AC power source serving as a power source for the charging device 1.
- Reference numeral 3 denotes a first rectifying / smoothing circuit for rectifying and smoothing the voltage of the AC power supply.
- Reference numeral 4 denotes a high-frequency transformer for converting power supplied from the AC power supply 1 to supply power to the battery pack 20.
- Reference numeral 5 denotes a switching circuit composed of switching elements such as FETs.
- Reference numeral 6 denotes a switching control circuit, which includes a switching IC and the like.
- the switching control circuit 6 controls the switching circuit 5 based on the feedback information of the voltage and current from the secondary side of the high-frequency transformer 4 so that the desired voltage and current can be supplied to the secondary circuit.
- Reference numeral 7 denotes a second rectifying / smoothing circuit for rectifying and smoothing the voltage converted in the high-frequency transformer 4.
- Reference numeral 8 denotes a display circuit, which is composed of, for example, an LED or the like, and displays a current charging state (before charging, during charging, charging end, etc.).
- Reference numeral 9 denotes an auxiliary power supply circuit, which includes a high-frequency transformer, a switching circuit, a switching control circuit, and the like, and supplies a voltage Vcc serving as a power source for a control system such as a microcomputer 14 (hereinafter referred to as a microcomputer) serving as a control unit.
- a microcomputer 14 hereinafter referred to as a microcomputer
- Reference numeral 10 denotes a battery voltage detection circuit
- reference numeral 11 denotes a charging current detection circuit, which detects the battery voltage and the charging current of the battery pack 20, respectively.
- Reference numeral 12 denotes a voltage / current control circuit, the charging voltage and the setting value of the charging current set by the voltage / current setting circuit 13, the voltage information and the current information (detection value) detected by the battery voltage detection circuit 10 and the charging current detection circuit 11. ) And a photocap for transmitting the comparison information to the switching control circuit 6 on the primary side. Based on the feedback information transmitted through the voltage / current control circuit 12, the switching control circuit 6 is controlled to supply a desired charging voltage and charging current to the secondary charging circuit (connection terminals a and b). Done.
- Reference numeral 14 denotes a microcomputer, the battery voltage detected by the battery voltage detection circuit 10, the charging current detected by the charging current detection circuit 11, the temperature information of the battery pack 20 detected by the temperature detection circuit 15, and the battery type detection circuit 16.
- the voltage / current setting circuit 13 can set the charging voltage and the charging voltage to a plurality of set values corresponding to the signal from the output port of the microcomputer 14. For example, a plurality of charging currents can be set to 2A, 3A, 5A, 8A, 10A, etc. corresponding to the setting from the output port.
- a plurality of charging voltages such as 16.8 V (corresponding to a voltage for charging a 4-cell lithium ion battery) and 21.0 V (corresponding to a voltage for charging a 5-cell lithium ion battery) can be set. . Note that these setting values are not limited to this.
- the microcomputer 14 controls the display circuit 8 in response to the output of the output port.
- the display circuit 8 is composed of LEDs
- the color development of the LEDs is controlled by outputting a predetermined signal from the output port according to the state of charge.
- the microcomputer 14 can control on / off of the switching control circuit 6 by outputting a signal through an insulating element such as a photocoupler.
- the switching control circuit 6 is turned off before charging and after the end of charging, the power supply to the battery pack 20 is stopped, and the switching control circuit 6 is turned on during charging to the battery pack 20. The power supply is started. Thereby, power consumption other than during charging can be suppressed.
- Reference numeral 17 denotes an FET (P channel) which is a switching element, and reference numeral 18 denotes a limiting resistor.
- the FET 17 is controlled to be turned on and off by the microcomputer 14 and supplies a Vcc voltage to the battery pack 20 via a predetermined connection terminal f.
- Reference numeral 20 denotes a battery pack, which will be described below.
- a battery cell 21 has a configuration in which a plurality of battery cells are connected in series. In the present embodiment, four battery cells 21 are connected in series and have a nominal voltage of 14.4V.
- a cell voltage detection circuit 22 is an IC or the like that detects the cell voltage of each battery cell 21.
- Reference numeral 23 denotes a power supply circuit using the battery cell 21 as a power supply, and supplies power to a microcomputer 24 (hereinafter referred to as a microcomputer) serving as a control unit on the battery pack 20 side.
- Reference numeral 25 denotes a battery voltage detection circuit that detects the entire voltage of the battery cell 21.
- Reference numeral 26 denotes an overcharge detection circuit.
- the cell voltage detection circuit 22 detects that even one of the plurality of battery cells 21 has reached a predetermined voltage or higher (overcharge threshold or higher), the cell voltage detection circuit 22 determines that the battery is overcharged, and a predetermined signal (abnormal signal).
- the microcomputer 24 receives the signal via the overcharge detection circuit 26 and determines that it is in an overcharge state.
- a signal (abnormal signal) output from the cell voltage detection circuit 22 during overcharge is an overcharge signal output circuit 30 and a predetermined connection terminal d connected when the battery pack 20 is connected to the charging device 1. It is transmitted to the charging device 1 side via the (first terminal).
- the charging device 1 is configured to stop charging based on this signal.
- Reference numeral 27 denotes an overdischarge detection circuit.
- the cell voltage detection circuit 22 detects that even one of the plurality of battery cells 21 has reached a predetermined voltage or less (overdischarge threshold value or less)
- the cell voltage detection circuit 22 determines that the battery is overdischarged, and a predetermined signal (abnormal signal).
- the microcomputer 24 receives the signal via the overdischarge detection circuit 27 and determines that it is in an overdischarge state.
- a signal (abnormal signal) output from the cell voltage detection circuit 22 during overdischarge is a predetermined connection terminal c of an electric device such as an electric tool (not shown) to which the overdischarge signal output circuit 29 and the battery pack 20 are connected.
- the electric device is configured to stop discharging based on this signal. Further, based on the abnormality signal received via the overcharge detection circuit 26 or the overdischarge detection circuit 27, the microcomputer 24 stores the number of receptions in the storage unit 24a such as a memory therein.
- Reference numeral 31 is a diode, and 32 is an FET as a switching element.
- the FET 17 of the charging device 1 When the battery pack 20 is connected to the charging device 1, the FET 17 of the charging device 1, the predetermined connection terminal f of each other, and the diode 31 of the battery pack 20 are connected to the gate of the FET 32 of the battery pack 20.
- the voltage Vcc is supplied and the FET 32 is turned on.
- the power supply circuit 23 operates and power is supplied to the microcomputer 24.
- the diode 31 is also connected to the output port of the microcomputer 24. After the microcomputer 24 is started, a predetermined signal is output from the output port, thereby turning on the FET 32. Can be maintained.
- the operating state of the power supply circuit 23 is maintained by outputting a signal from the output port of the microcomputer 24 even if the voltage Vcc is not supplied from the charging device 1 side.
- the operating state of the microcomputer 24 can be maintained.
- the voltage Vcc supplied to the battery pack 20 by being connected to the charging device 1 is configured to be detectable by the microcomputer 24 via the connection detection circuit 28 which is a signal detection means.
- the microcomputer 24 is configured to store the number of times the battery pack 20 is connected to the charging device 1 in the internal memory 24a.
- Reference numeral 33 denotes a thermistor serving as a temperature detecting element provided in the vicinity of the battery cell 21.
- the temperature information of the thermistor 33 is detected by the temperature detection circuit 15 of the charging device 1 via a predetermined connection terminal d, and charging control is performed based on the detected temperature detection value.
- Reference numeral 34 denotes a battery type discrimination resistor (battery type discrimination element) that discriminates, for example, a battery pack constituted by four battery cells (series connection) and a battery pack constituted by five battery cells (series connection). It is provided for.
- the battery type discrimination resistor 34 has information on the battery pack 20 (number of battery cells in series, number of parallel battery cells, etc.), and has a different resistance value for each battery pack.
- Information on the battery discrimination resistance is detected by the battery type detection circuit 16 of the charging device 1 via a predetermined connection terminal e (second terminal), and charging control is performed based on the detected information on the battery type discrimination resistance. .
- Reference numerals 35 and 36 denote FETs as switching elements, which function as blocking means as will be described later.
- the FETs 35 and 36 are controlled on and off by a predetermined output port of the microcomputer 24.
- the FETs 35 and 36 are on, the charging device 1 is in a state where temperature information and battery type discrimination information can be detected.
- determination information is demonstrated using FIG. 2, FIG.
- FIG. 2 shows an example of a temperature information detection method.
- the temperature detection circuit 15 of the charging device 1 is configured to divide the voltage Vcc with resistors R1 and R2.
- One terminal of the thermistor 33 of the battery pack 20 is connected to a connection point of the resistors R1 and R2 via a predetermined connection terminal d.
- the microcomputer 14 of the charging device 1 supplies the voltage Vcc to the combined resistance of the resistors R1 and R2 and the thermistor.
- the divided value is input.
- the microcomputer 14 determines temperature information based on this partial pressure value.
- the FET 35 when the FET 35 is in the off state, the other terminal of the thermistor 33 is not at the ground level (open state), so the microcomputer 14 cannot detect the temperature information. That is, the thermistor 33 is not connected to the microcomputer 14 on the charging device 1 side.
- FIG. 3 shows an example of a method for detecting battery type discrimination information.
- the battery type determination circuit 16 of the charging device 1 has a configuration in which the resistor R3 is pulled up with the voltage Vcc.
- One terminal of the battery type discrimination resistor 34 of the battery pack 20 is connected to the resistor R3 via a predetermined connection terminal e.
- the FET 36 is in the ON state
- the other terminal of the battery type determination resistor 34 is at the ground level, and the voltage Vcc is divided by the resistor R3 and the battery type determination resistor 34 to the microcomputer 14 of the charging apparatus 1.
- the entered value is entered.
- the microcomputer 14 determines battery type information based on this partial pressure value.
- the microcomputer 14 cannot detect the battery type discrimination information because the other terminal of the battery type discrimination resistor 34 is not at the ground level (open state). That is, the battery type discrimination resistor 34 is not connected to the microcomputer 14 on the charging device 1 side.
- An FET 37 serving as a switching element is provided for transmitting digital information as will be described later.
- the gate of the FET 37 is connected to the output port of the microcomputer 24 so that the on / off state of the FET 37 can be controlled.
- the FET 37 is controlled by the microcomputer 24 so as to be turned off.
- Reference numerals 38, 39, and 40 denote switching elements, which are P-channel, N-channel, and N-channel FETs, respectively.
- Reference numeral 41 denotes a resistor. These elements are provided for receiving digital information as will be described later.
- the gate of the FET 39 is connected to the output port of the microcomputer 24 so that the on / off of the FET 39 can be controlled. When connected to the charging device 1, the FET 39 is controlled by the microcomputer 24 so as to be turned off.
- FIG. 4 is an example of a circuit diagram showing a state in which the battery pack according to the present invention and the information transmitting / receiving apparatus (external device) are connected.
- An example for transmitting and receiving battery information stored in the storage unit 20a such as a memory in the battery pack 20 with an external device through digital communication without newly providing a connection terminal will be described with reference to FIG.
- Reference numeral 60 denotes an information transmitting / receiving apparatus which is an external device for transmitting / receiving information stored in the storage unit 24a such as a memory in the battery pack 20, and the configuration thereof will be described below. It is configured as follows. Reference numerals 50, 52, 54 and 56 denote resistors (limit resistors), 51, 53, 55 and 57 denote FETs which are switching elements, and 58 denotes a communication IC. Further, the information transmitting / receiving device 60 is configured to be able to transmit / receive to / from a personal computer (PC) 70, and can be operated from the PC 70 side.
- PC personal computer
- the battery information communication operation will be described. The operation when the battery pack 20 is connected to the information transmitting / receiving device 60 will be described below.
- the communication IC 58 operates when the user operates the corresponding software of the PC 70.
- the communication IC 58 outputs a predetermined digital signal from the TX terminal.
- a digital signal is basically a signal in which high and low signals are output in a pulsed manner (pulse signal).
- the TX terminal is connected to the gate of the FET 55 and is turned on when the pulse signal is high. When the FET 55 is turned on, the P-channel FET 53 is also turned on.
- the microcomputer 24 on the battery pack 20 side is activated as described above. As described above, once activated, the microcomputer 24 outputs a signal from the output port connected to the diode 31, and can continue the operation regardless of whether the FET 32 is on or off.
- connection detection circuit 28 can detect a signal of the voltage Vcc.
- the connection detection circuit 28 detects a predetermined pulse signal
- the battery pack 20 recognizes that it is connected to the information transmitting / receiving device 60 instead of the charging device 1 shown in FIG.
- the microcomputer 24 turns off the FETs 35 and 36 in order to perform digital communication between the battery pack 20 and the information transmission / reception device 60.
- the thermistor 33 and the battery type discrimination resistor 34 are not electrically connected by turning off the FETs 35 and 36.
- the microcomputer 24 outputs a predetermined output signal from the output port connected to the gate of the FET 39, and turns on the FET 39.
- the P-channel FET 38 is also turned on.
- the FET 57 is controlled to be turned on and off in response to the digital signal.
- the FET 57 is in the on state, and the drain of the FET 57 is at the ground potential.
- This ground potential is transmitted to the battery pack 20 via a predetermined connection terminal e.
- the FETs 38 and 40 are also in an off state, so that the voltage VD is input to the RX terminal of the microcomputer 24 of the battery pack 20 via the resistor 41.
- the FET 57 when a low signal is output from the TX terminal, the FET 57 is in an off state, and the voltage Vcc is transmitted to the battery pack 20 via the resistor 56 and the predetermined connection terminal e. Further, in the battery pack 20, the FET 38 and the FET 40 are turned on by the voltage Vcc. For this reason, a ground level voltage is input to the RX terminal of the microcomputer 24 of the battery pack 20.
- the RX terminal of the microcomputer 24 of the battery pack 20 receives the high signal, and conversely outputs a low signal from the TX terminal of the communication IC 58.
- the RX terminal of the microcomputer 24 receives a low signal.
- these signals are transmitted not by a dedicated terminal for digital signal transmission but by a terminal e for transmitting battery type discrimination information when connected to the charging device 1 described with reference to FIG. Therefore, since it is not necessary to newly provide a dedicated terminal for digital signal transmission, it is not necessary to secure an installation space for the terminal, and an increase in size can be suppressed and compatibility can be maintained.
- the FET 37 When a digital signal is output from the TX terminal of the microcomputer 24 of the battery pack 20, the FET 37 is controlled to be turned on and off in response to the digital signal. When a high signal is output from the TX terminal, the FET 37 is on and the drain of the FET 37 is at the ground potential. This ground potential is transmitted to the information transmitting / receiving device 60 via a predetermined connection terminal d. When the ground potential is present, the FET 51 is in an off state, and thus the voltage Vcc is input to the RX terminal of the communication IC 58 of the information transmitting / receiving device 60 via the resistor 50.
- the FET 37 when a low signal is output from the TX terminal of the microcomputer 24, the FET 37 is in an off state, and no potential is transmitted to the information transmitting / receiving device 60 via the predetermined connection terminal d. Further, in the information transmitting / receiving device 60, the voltage Vcc is applied to the gate of the FET 51 via the resistor 52, and the FET 51 is turned on. For this reason, a ground level voltage is input to the RX terminal of the communication IC 58 of the information transmitting / receiving apparatus 60.
- the RX terminal of the communication IC 58 of the information transmitting / receiving device 60 receives the high signal, and conversely outputs a low signal from the TX terminal of the microcomputer 24.
- the RX terminal of the communication IC 58 receives a low signal.
- these signals are transmitted not by a dedicated terminal for digital signal transmission, but by a terminal d for transmitting temperature information when connected to the charging device 1 described with reference to FIG. Therefore, it is not necessary to newly provide a dedicated terminal for digital signal transmission.
- the temperature information used when the charging device is connected and the terminal for transmitting the battery type identification information are stored in a storage unit such as a memory provided in the battery pack.
- Battery information can be transmitted to external devices. That is, a plurality of information can be transmitted using a predetermined terminal (existing terminal). Therefore, it is not necessary to secure an installation space for a new terminal, and an increase in size can be suppressed, and an existing charging function can be maintained and compatibility can be maintained.
- the information transmitting / receiving apparatus 60 is also connected to the PC 70, and information obtained by digital communication can be displayed on the PC 70.
- the information transmitting / receiving device 60 is not limited to a device that can display battery information on the PC 70.
- the information transmitting / receiving device 60 is a charging device that performs charging control based on battery information obtained by digital communication, or obtained by digital communication. It may be an electric tool or accessory device that performs discharge control based on the battery information.
- step 101 it is determined whether or not the battery pack 20 is connected to an external device (step 101).
- the voltage Vcc is supplied through a predetermined connection terminal f (step 102), and the FET 32 in the battery pack 20 is turned on by the voltage Vcc.
- the power supply circuit 23 operates and the microcomputer 24 of the battery pack 20 is activated (step 103).
- the microcomputer 24 activated in step 103 outputs a predetermined output signal from the output port, and turns on the FET 32 via the diode 31 (step 104).
- step 105 it is determined whether or not a predetermined pulse signal is detected in the connection detection circuit 28 (step 105).
- a predetermined pulse signal is detected in step 105, it is determined that the information transmitting / receiving apparatus 60 is connected (step 117). If the predetermined pulse signal cannot be detected in step 105, it is determined that the charging device 1 is connected (step 106).
- step 106 If it is determined in step 106 that the battery charger 1 is connected, the microcomputer 24 sends a predetermined signal to the output port to turn on the FETs 35 and 36 in order to activate the thermistor 33 and the battery type determination resistor 34. (Steps 107 and 108). Since the digital communication is not performed when connected to the charging device 1, the microcomputer 24 outputs a predetermined signal from the output port to turn off the FET 39 (step 109).
- the charging device 1 sets the charging voltage and the charging current by the voltage / current setting circuit 13 based on the information of the thermistor 33 and the battery type discrimination resistor 34 transmitted via the predetermined connection terminals d and e, Is started (step 110). After the start of charging, for example, charging state information such as detection information of the overcharge detection circuit 26 and detection information of the connection detection circuit 28 (number of connections to the charging device) is stored in the memory 24a of the microcomputer 24 (step 111). Thereafter, the charging device 1 determines whether or not a full charge has been reached (step 112).
- the full charge determination method is not limited to this.
- step 114 it is determined whether or not the connection detection circuit 28 is in a state where a pulse signal cannot be detected.
- the fact that the signal cannot be detected means that the supply of the voltage Vcc from the external device has been stopped, and the battery pack 20 has been removed from the external device (not connected).
- Step 115 After being disconnected from the external device, the microcomputer 24 outputs a predetermined signal from the output port (stick 116) to turn off the FET 32 via the diode D31 in order to stop the operation of the microcomputer 24, and returns to step 101.
- step 117 if it is determined in step 117 that the information transmission / reception device 60 is connected, the microcomputer 24 turns off the FETs 35 and 36 in order to electrically open the thermistor 33 and the battery type determination resistor 34. A predetermined signal is output from the output port (steps 118 and 119). Further, in order to perform digital communication between the battery pack 20 and the information transmitting / receiving device 60, the microcomputer 24 outputs a predetermined signal from the output port to turn on the FET 39 (step 120). After such a state, the microcomputer 24 of the battery pack 20 and the communication IC 58 of the information transmission / reception layer device 60 communicate information via both the RX terminal and the TX terminal via a predetermined connection terminal (step). 121).
- the connection detection circuit 28 determines whether or not a signal can be detected (step 122). If the signal cannot be detected, the battery pack 20 is removed from the information transmitting / receiving device 60. After being removed from the external device (step 115), the microcomputer 24 outputs a predetermined signal from the output port to turn off the FET 32 via the diode D31 in order to stop the operation of the microcomputer 24. (Stick 116), the process returns to step 101.
- the battery pack 20 can transmit the thermistor information and the battery type discrimination information via the predetermined connection terminals d and e when connected to the charging device 1.
- the information transmitting / receiving device 60 battery information is communicated via the existing connection terminals d and e used when connecting to the charging device 1. For this reason, there is no need to provide a new dedicated terminal for communication, so it is not necessary to secure a space for installing a new connection terminal, and digital information can be transmitted and received through the existing connection terminal while suppressing an increase in size. , Compatibility can be maintained.
- the blocking means FETs 35 and 36
- the charging device 1 when the battery pack 20 is connected to the information transmitting / receiving device 60, the blocking means (FETs 35 and 36) are blocked.
- the charging device 1 when the charging device 1 has the function (history management function) of the information transmitting / receiving device 60, the charging device 1 is configured to output a pulse signal at a predetermined timing, for example, before starting charging or after completing charging. By doing so, it is possible to charge the battery pack 20 and manage the history only by the charging device 1 without providing the information transmitting / receiving device 60 separately.
- the battery pack 20 is discharged, that is, when connected to an electric tool or accessory device, if the device is configured to output a pulse signal, history management of the discharge state is possible. In this case, if the connection terminal c is used as the pulse signal output terminal, it is not necessary to provide a new terminal.
- 1 is a charging device (external device), 2 is an AC power supply, 3 is a first rectifying / smoothing circuit, 4 is a high-frequency transformer, 5 is a switching circuit, 6 is a switching control circuit, 7 is a second rectifying / smoothing circuit, and 8 is a display circuit.
- 9 is an auxiliary power supply circuit, 10 is a battery voltage detection circuit, 11 is a charging current detection circuit, 12 is a voltage / current control circuit, 13 is a voltage / current setting circuit, 14 is a microcomputer, 15 is a temperature detection circuit, and 16 is a battery type detection.
Abstract
Description
Claims (5)
- 電池の温度を監視する温度検出素子と、
前記電池の種類を判別する電池種判別素子と、
前記温度検出素子の情報を外部機器へ伝達するための第1端子と、
前記電池種判別素子の情報を前記外部機器へ伝達するための第2端子と、
を有する電池パックであって、
前記温度検出素子及び/又は前記電池種判別素子からの情報を前記外部機器へ伝達することを遮断する遮断手段を有することを特徴とする電池パック。 - 前記外部機器からの所定の信号によって起動する制御部と、
前記所定の信号を検出するための信号検出手段と、を有し、
前記信号検出手段により前記所定の信号を検出した場合において、前記遮断手段は前記温度検出素子及び前記電池種判別素子からの情報を前記外部機器へ伝達することを遮断し、
前記制御部は、前記第1端子及び/又は前記第2端子を介して前記外部機器とデジタル信号を送信又は受信するように構成したことを特徴とする請求項1に記載の電池パック。 - 前記信号検出手段により検出される前記所定の信号がパルス信号であることを特徴とする請求項2に記載の電池パック。
- 前記電池パックの使用履歴を前記外部機器とデジタル信号によって通信可能に構成したことを特徴とする請求項2又は3に記載の電池パック。
- 前記外部機器が前記電池パックを充電するための充電装置の場合には、前記温度検出素子の情報及び前記電池種判別素子の情報を前記第1端子及び前記第2端子を介して前記充電装置に伝達し、前記外部機器が前記充電装置以外の場合には、前記遮断手段により前記情報の伝達を遮断することを特徴とする請求項1乃至4の何れか一項に記載の電池パック。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017529520A JP6521070B2 (ja) | 2015-07-17 | 2016-06-27 | 電池パック |
EP16827571.7A EP3327889A4 (en) | 2015-07-17 | 2016-06-27 | BATTERY PACK |
CN201680036458.XA CN107710546A (zh) | 2015-07-17 | 2016-06-27 | 电池组 |
US15/741,764 US20180212283A1 (en) | 2015-07-17 | 2016-06-27 | Battery pack |
Applications Claiming Priority (2)
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JP2015143078 | 2015-07-17 | ||
JP2015-143078 | 2015-07-17 |
Publications (1)
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WO2017014007A1 true WO2017014007A1 (ja) | 2017-01-26 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2016/068987 WO2017014007A1 (ja) | 2015-07-17 | 2016-06-27 | 電池パック |
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US (1) | US20180212283A1 (ja) |
EP (1) | EP3327889A4 (ja) |
JP (1) | JP6521070B2 (ja) |
CN (1) | CN107710546A (ja) |
WO (1) | WO2017014007A1 (ja) |
Cited By (1)
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JP2017216861A (ja) * | 2016-05-30 | 2017-12-07 | 日立工機株式会社 | 電池パック、充電装置、及び電動工具 |
Families Citing this family (1)
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TWM593074U (zh) * | 2019-11-11 | 2020-04-01 | 鑽全實業股份有限公司 | 電池裝置及電池裝置充電系統 |
Citations (2)
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JP2007026712A (ja) * | 2005-07-12 | 2007-02-01 | Sanyo Electric Co Ltd | パック電池、パック電池と電子機器 |
JP2014072945A (ja) * | 2012-09-28 | 2014-04-21 | Hitachi Koki Co Ltd | 充電システム、電池パック、及び充電装置 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
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US20110025255A1 (en) * | 2009-07-30 | 2011-02-03 | Hitachi Koki Co., Ltd. | Solar Power System For Charging Battery Pack |
US20130051104A1 (en) * | 2011-08-23 | 2013-02-28 | Hitachi Koki Co., Ltd. | Battery Adapter and Power Source Device Employing Same |
WO2014050152A1 (en) * | 2012-09-28 | 2014-04-03 | Hitachi Koki Co., Ltd. | Battery charger and battery pack |
JP2014236584A (ja) * | 2013-06-03 | 2014-12-15 | 三洋電機株式会社 | パック電池 |
-
2016
- 2016-06-27 EP EP16827571.7A patent/EP3327889A4/en not_active Withdrawn
- 2016-06-27 WO PCT/JP2016/068987 patent/WO2017014007A1/ja active Application Filing
- 2016-06-27 JP JP2017529520A patent/JP6521070B2/ja active Active
- 2016-06-27 CN CN201680036458.XA patent/CN107710546A/zh active Pending
- 2016-06-27 US US15/741,764 patent/US20180212283A1/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007026712A (ja) * | 2005-07-12 | 2007-02-01 | Sanyo Electric Co Ltd | パック電池、パック電池と電子機器 |
JP2014072945A (ja) * | 2012-09-28 | 2014-04-21 | Hitachi Koki Co Ltd | 充電システム、電池パック、及び充電装置 |
Non-Patent Citations (1)
Title |
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See also references of EP3327889A4 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2017216861A (ja) * | 2016-05-30 | 2017-12-07 | 日立工機株式会社 | 電池パック、充電装置、及び電動工具 |
Also Published As
Publication number | Publication date |
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EP3327889A4 (en) | 2019-03-27 |
JPWO2017014007A1 (ja) | 2018-06-07 |
EP3327889A1 (en) | 2018-05-30 |
CN107710546A (zh) | 2018-02-16 |
US20180212283A1 (en) | 2018-07-26 |
JP6521070B2 (ja) | 2019-05-29 |
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