WO2011052294A1 - 電力供給装置 - Google Patents
電力供給装置 Download PDFInfo
- Publication number
- WO2011052294A1 WO2011052294A1 PCT/JP2010/064999 JP2010064999W WO2011052294A1 WO 2011052294 A1 WO2011052294 A1 WO 2011052294A1 JP 2010064999 W JP2010064999 W JP 2010064999W WO 2011052294 A1 WO2011052294 A1 WO 2011052294A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- battery
- power
- batteries
- battery pack
- power supply
- Prior art date
Links
Images
Classifications
-
- 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
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0024—Parallel/serial switching of connection of batteries to charge or load circuit
-
- 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
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
-
- 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
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
Definitions
- the present invention relates to an apparatus for supplying electric power to an electric device, and more particularly to an apparatus for supplying electric power from a plurality of batteries to the electric device.
- Japanese Unexamined Patent Publication No. 2000-308268 discloses an electric tool that uses two battery packs as power sources.
- two attached battery packs can be connected in series or in parallel. Therefore, when the power tool is used for heavy work, two battery packs can be connected in series to increase the output of the power tool, and when the power tool is used for light work, Battery packs can be connected in parallel to increase the operating time of the power tool.
- a large amount of power can be supplied to electrical equipment by connecting a plurality of batteries in series.
- the electric power stored in the plurality of batteries cannot be sufficiently supplied unless the batteries are substantially in the same state.
- the amount of power remaining in each battery is not uniform.
- the same current flows through each battery, and each battery discharges substantially the same power. Accordingly, a battery with a small amount of remaining power runs out of power earlier than other batteries. If power is exhausted even with only a part of the batteries, even if energy remains in other batteries, power cannot be supplied from a plurality of batteries connected in series.
- the batteries are rechargeable (secondary batteries)
- the remaining amount of power may be made substantially the same among the plurality of batteries by fully charging each battery in advance.
- the charge capacity of the secondary battery decreases according to the use history (use cycle, use period, experience temperature, etc.) of the secondary battery. Therefore, even if each battery is fully charged in advance, if the batteries have different usage histories, there will be a difference in the amount of remaining power.
- the power supply device includes a battery attachment portion to which at least three batteries can be attached, and a connection circuit that electrically connects the at least three batteries attached to the battery attachment portion.
- the connection circuit is characterized by connecting at least two batteries in parallel and connecting at least one other battery in series to the at least two batteries connected in parallel.
- the battery referred to in this specification is not limited to a battery cell, but also includes a battery pack and a battery pack incorporating a plurality of battery cells.
- the battery is not limited to a rechargeable secondary battery, and may be a primary battery that cannot be recharged.
- At least three batteries when at least three batteries are attached to the battery attachment portion, at least two batteries are connected in parallel, and at least one other battery is connected in series to at least two batteries connected in parallel. .
- at least two batteries are connected in series, and at least one other battery is connected in parallel to one of the two batteries connected in series.
- at least two batteries are connected in series, so that it is possible to supply a large amount of electric power to an electric device, and some batteries are connected in parallel. Electric power to be discharged can be reduced.
- the amount of power remaining in each battery is not uniform.
- a battery with a small amount of remaining power can be connected in parallel with another battery, and a battery with a large amount of remaining power can be connected in series with a battery group connected in parallel.
- the discharged electric power is reduced in a battery with a small remaining electric energy, and the discharged electric power is increased in a battery with a large remaining electric energy.
- the difference in the amount of power remaining in each battery is reduced.
- a situation in which the power of only some of the batteries is exhausted at an early stage can be avoided, and more electric power stored in all of the batteries can be supplied to the electrical equipment.
- connection circuit described above can change the combination of the batteries connected in parallel without changing the position of the battery attached to the battery attachment portion. Thereby, the connection form of a battery can be changed appropriately, without removing a battery from a battery attaching part.
- the battery connection form it is preferable to change the battery connection form according to the amount of electric power remaining in each battery.
- the output voltage of the battery and the energization current of the battery change according to the amount of power remaining in the battery. Therefore, it is also preferable to change the battery connection mode according to the output voltage of the battery or the energization current of the battery.
- the amount of power remaining in the battery decreases according to the battery usage history. Therefore, it is also preferable to change the battery connection form according to the usage history (usage cycle, usage period, experience temperature, etc.) of each battery, even if the remaining power amount of each battery is unknown. .
- the internal resistance of the battery rises according to the battery usage history, it is also preferable to change the connection form of the battery according to the internal resistance of the battery. Also, the higher the internal resistance of the battery, the greater the amount of heat generated during discharge. Therefore, it is also preferable to change the battery connection mode according to the battery temperature. Furthermore, it is also preferable to change the connection form of the battery according to another index indicating the deterioration state of the battery, not limited to the internal resistance of the battery.
- the connection form of the battery is changed according to the indicators indicating the state of each battery such as the remaining electric energy, output voltage, energizing current, usage history, internal resistance, temperature, and deterioration state.
- the above-described power supply device has a detection unit that detects at least one index indicating the state of each battery mounted on the battery mounting unit, and the battery mounting unit based on the index detected by the detection unit. It is preferable to include a processing unit that performs a grouping process for grouping at least three attached batteries into at least two battery groups so that at least one battery group includes at least two batteries.
- connection circuit described above connects the batteries divided into the same battery group in parallel and connects the batteries divided into different battery groups in series. According to this power supply device, the connection form of the battery can be automatically changed according to the index indicating the state of each battery.
- the detection unit described above detects at least the amount of power remaining in each battery.
- the processing unit executes the grouping process so that a difference generated between the total electric energy for each battery group is reduced.
- the grouping process is not limited to this form, and the battery packs may be ranked based on the remaining power amount, and the grouping may be performed based on the ranking. For example, in the case of three battery packs, if the battery pack with the largest remaining power amount is allocated to one group and the two battery packs with a small amount are allocated to one group, the total for each battery group The grouping can be performed so that the difference becomes the smallest without calculating the difference generated between the amounts of power.
- the circuit breaker may be a contact relay or a contactless semiconductor switch.
- a circuit breaker it is possible to prevent the batteries from being short-circuited accidentally when the connection form of the batteries is changed.
- the above-mentioned circuit breaker is preferably located between two batteries connected in series regardless of the connection form of the battery formed by the connection circuit. Thereby, it is possible to prevent the batteries from being short-circuited by mistake, regardless of how the connection form of the batteries is changed.
- the batteries are connected in series to supply a large amount of power to the electrical device, and a plurality of batteries are connected. More electric power stored in can be supplied to electrical equipment.
- FIG. 1 schematically shows a power supply system according to an embodiment.
- FIG. 2 is a circuit diagram showing an electrical structure of the power supply system.
- 3 (a) to 3 (f) show battery pack connection modes that can be realized by the power supply system.
- FIG. 4A is a flowchart showing the operation of the power supply system together with FIG. 4B.
- X in FIG. 4A is connected to X in FIG. 4B
- Y in FIG. 4A is connected to Y in FIG. 4B.
- FIG. 4B is a flowchart showing the operation of the power supply system together with FIG. 4A.
- FIG. 5A shows an example of a connection form formed by the connection circuit for four battery packs
- FIG. 5B schematically shows the connection form of FIG.
- FIG. 6A shows another example of the connection form formed by the connection circuit for the four battery packs
- FIG. 6B schematically shows the connection form of FIG. 6A. .
- FIG. 7 is a graph showing a change with time of energization current of each battery pack.
- FIG. 8A shows an example of a connection form that the connection circuit first forms for three battery packs
- FIG. 8B schematically shows the connection form of FIG. 8A
- FIG. 8C shows an example of the changed connection form formed by the connection circuit for the three battery packs
- FIG. 8D schematically shows the connection form of FIG. 8C. Yes.
- FIG. 9A shows another example of the connection form that the connection circuit initially forms for the three battery packs
- FIG. 9B schematically shows the connection form of FIG. 9A.
- FIG. 9C shows another example of the changed connection form formed by the connection circuit for the three battery packs
- FIG. 9D schematically shows the connection form of FIG. 9C. Show.
- FIG. 10A shows another example of the connection form that the connection circuit first forms for the three battery packs
- FIG. 10B schematically shows the connection form of FIG. ing
- FIG. 10 (c) shows another example of the changed connection form formed by the connection circuit for the three battery packs
- FIG. 10 (d) schematically shows the connection form of FIG. 10 (c). Show.
- FIG. 11A is a flowchart illustrating the operation of the power supply system according to the second embodiment together with FIG. 11B.
- X in FIG. 11A is connected to X in FIG. 11B
- Y in FIG. 11A is connected to Y in FIG. 11B.
- FIG. 11B is a flowchart illustrating the operation of the power supply system according to the second embodiment together with FIG. 11A.
- FIG. 12 shows a configuration example of a connection circuit corresponding to six battery packs.
- the power supply system includes a power supply device 10 and a plurality of battery packs 100.
- the power supply device 10 is a device that is provided with a plurality of battery packs 100 and supplies power to the electric tool 200 from the plurality of battery packs 100.
- the power supply apparatus 10 is not limited to the electric power tool 200, and can also supply power to other electric devices.
- the electric power supply apparatus 10 of the present embodiment is independent from the electric tool 200, the electric power supply apparatus 10 may be integrated into an electric device that supplies electric power.
- the power supply device 10 has four battery mounting portions 12.
- the four battery mounting portions 12 are provided in the housing of the power supply device 10.
- a battery pack 100 can be attached to and detached from each battery mounting portion 12.
- Each battery pack 100 is a battery pack for a power tool, and can be used alone for various power tools.
- the output voltage of each battery pack 100 is substantially 18 volts.
- the power supply device 10 supplies power to the electric tool 200 from the battery pack 100 attached to the four battery mounting portions 12.
- the power supply device 10 supplies power to the electric tool 200 at a voltage that is approximately twice the output voltage of the battery pack 100 by connecting at least a part of the attached battery pack 100 in series. Can do. That is, if the output voltage of the battery pack 100 is 18 volts, it is possible to supply power to the electric tool 200 with a voltage of 36 volts.
- the power supply device 10 does not necessarily require the four battery packs 100, and can supply power to the electric tool 200 at a voltage of approximately 36 volts as long as at least two battery packs 100 are attached. According to the power supply device 10, by using a plurality of battery packs 100, it is possible to drive the high-power electric tool 200 that cannot be driven by one battery pack 100.
- the power supply device 10 includes an output unit 14 that outputs power from the battery pack 100.
- the output unit 14 is provided in the housing of the power supply device 10.
- the cord 202 of the electric power tool 200 can be connected.
- the power output from the power supply device 10 is supplied to the power tool 200 via the cord 202.
- the power supply device 10 includes a display unit 16.
- the display unit 16 is provided in the housing of the power supply device 10.
- the display unit 16 includes a plurality of light emitting diodes 18 and displays various types of information such as the amount of power remaining in the battery pack 100 by selectively lighting or blinking the plurality of light emitting diodes 18.
- the display unit 16 may be replaced with a plurality of light emitting diodes 18 using another display device such as a liquid crystal panel.
- FIG. 2 is a circuit diagram showing an electrical configuration of the power supply apparatus 10.
- FIG. 2 also shows four battery packs 100 attached to the power supply apparatus 10.
- the battery pack 100 includes a plurality of battery cells 110, a pair of battery output terminals 102 and 104, a temperature sensitive element 112, a battery controller 114, and a battery communication terminal 106.
- Each battery cell 110 is a secondary battery cell, and specifically a lithium ion battery cell.
- the pair of battery output terminals 102 and 104 includes a battery positive terminal 102 and a battery negative terminal 104.
- the pair of battery output terminals 102 and 104 are connected to the plurality of battery cells 110 and output power from the plurality of battery cells 110.
- the temperature sensing element 112 is disposed in the vicinity of the plurality of battery cells 110 and measures the temperature of the plurality of battery cells 110.
- the battery controller 114 is connected to the plurality of battery cells 110 and the temperature sensitive element 112.
- the battery controller 114 has an arithmetic circuit and a storage circuit, and monitors the voltage and temperature of the plurality of battery cells 110. Thereby, the battery controller 114 creates and stores use history information (including the number of times of charging and experience temperature) of the battery pack 100. Further, the battery controller 114 stores product information such as the model, rated voltage, and rated capacity of the battery pack 100.
- the battery controller 114 is connected to the battery communication terminal 106, and can perform information communication with an external device such as a charger or the power supply apparatus 10 of the present embodiment via the battery communication terminal 106.
- the power supply apparatus 10 includes a pair of output terminals 22 and 24, four pairs of battery connection terminals 52 and 54, a pair of output terminals 22 and 24, and four pairs of battery connection terminals 52 and 54. Are connected to each other.
- the pair of output terminals 22, 24 has a positive electrode output terminal 22 and a negative electrode output terminal 24.
- the pair of output terminals 22 and 24 are provided in the output unit 14 illustrated in FIG. 1 and are electrically connected to the electric power tool 200 via the cord 202.
- each battery mounting portion 12 is provided with a pair of battery connection terminals 52 and 54.
- Each pair of battery connection terminals 52 and 54 includes a positive electrode connection terminal 52 and a negative electrode connection terminal 54.
- the pair of battery connection terminals 52 and 54 are electrically connected to the pair of battery output terminals 102 and 104 of the battery pack 100 when the battery pack 100 is attached to the battery attachment portion 12. Thereby, the DC power from the battery pack 100 is supplied to the power supply device 10 via the pair of battery connection terminals 52 and 54.
- the DC power input from the battery connection terminals 52 and 54 is output from the pair of output terminals 22 and 24 via the connection circuit 60.
- each battery mounting portion 12 is further provided with one communication terminal 56.
- the communication terminal 56 is electrically connected to the battery communication terminal 106 of the battery pack 100 attached to the battery attachment portion 12. That is, when the battery pack 100 is attached to the battery attachment portion 12, the battery controller 114 is connected to the power supply apparatus 10 so as to be communicable.
- the connection circuit 60 includes a high potential connection line 67, a medium potential connection line 68, a low potential connection line 69, six relays 62, four diodes 64, and a cutoff switch 66.
- the high potential connection line 67 is connected to the positive output terminal 22, and the low potential connection line 69 is connected to the negative output terminal 24.
- the medium potential connection line 68 is provided independently from the high potential connection line 67 and the low potential connection line 69.
- the connection circuit 60 switches each relay 62 to electrically connect each positive electrode connection terminal 52 to one of the high potential connection line 67 and the medium potential connection line 68 and connect each negative electrode connection terminal 54 to the medium potential. It is electrically connected to one of the connection line 68 and the low potential connection line 69.
- the positive electrode connection terminal 52 is directly connected to the intermediate potential connection line 68 in order to reduce the number of relays 62.
- the negative electrode connection terminal 54 is directly connected to the low potential connection line 69.
- Each diode 64 is connected to the positive electrode connection terminal 52 and prevents a current from flowing back to the battery pack 100.
- the cutoff switch 66 is provided on the medium potential connection line 68.
- the cutoff switch 66 is an element that electrically disconnects the connection circuit 60 as necessary, and a field effect transistor (FET) is used in this embodiment.
- FET field effect transistor
- each of the relays 62 can also be configured using a semiconductor switch such as a field effect transistor, whereby the connection form can be changed instantaneously.
- Each relay 62 may be a contact relay or a contactless semiconductor switch.
- FIG. 3 shows a connection form of a plurality of battery packs 100 that can be formed by the connection circuit 60.
- the connection circuit 60 connects the two battery packs 100 in series.
- the connection circuit 60 connects at least two battery packs 100 in parallel and in parallel. At least one other battery pack 100 is connected to the at least two battery packs 100 in series.
- the power supply apparatus 10 is at a voltage twice as high as the output voltage of the battery pack 100 alone (36 volts in this embodiment). Electric power can be supplied to the electric tool 200.
- each battery pack 100 varies depending on the connection form.
- substantially the same current flows through one battery pack 100 located in the upper stage and one battery pack 100 located in the lower stage, and each battery pack 100 is substantially Are discharged with the same power (that is, the amount of power discharged per unit time is substantially equal).
- the remaining power amount of the battery pack 100 located in the upper stage is 100 percent (ratio to the capacity), and the remaining power amount of the battery pack 100 located in the lower stage is 50 percent.
- the battery pack 100 located in the lower stage runs out of power at an early stage, and at that time, even if 50% of the electric energy remains in the battery pack 100 located in the upper stage, the two batteries connected in series The pack 100 cannot supply power. That is, even if a total of 150% of electric power (for 1.5 fully charged battery packs 100) remains in the two prepared battery packs 100, the result is 100% of electric power (fully charged). Only one battery pack) can be supplied. As described above, when the power is supplied only by the two battery packs 100, the power stored in the battery packs 100 can be sufficiently supplied unless the remaining power amounts of the two battery packs 100 are substantially the same. Can not.
- the power discharged by each battery pack 100 (the amount of power discharged per unit time) is different between the battery pack 100 located in the upper stage and the two battery packs 100 located in the lower stage.
- the electric power discharged from each battery pack 100 located in the lower stage is substantially halved with respect to the battery pack 100 located in the upper stage.
- the remaining power amount of the battery pack 100 located in the upper stage is 100% and the remaining power amount of each battery pack 100 located in the lower stage is 50%.
- each battery pack 100 located at the lower stage discharges substantially half of the power with respect to the battery pack 100 located at the upper stage.
- the three battery packs 100 run out of power at substantially the same timing, and can discharge all the stored power. That is, it is possible to supply the electric tool 200 with all of the electric power of 200 percent remaining in the three prepared battery packs 100 (two battery packs that are fully charged).
- the addition of one battery pack 100 having a remaining power amount of 50% corresponds to one fully charged battery pack. It is possible to supply more electric power.
- the power supply apparatus 10 of the present embodiment at least three battery packs 100 can be connected in combination of parallel connection and series connection. Thereby, electric power can be supplied to the electric tool 200 at a high voltage, and even when the remaining power amount of the battery pack 100 is not uniform, more electric power stored in the battery pack 100 can be supplied. . Since the connection form is changed by the relay 62, the user does not need to change the position of the battery pack 100 attached to the battery attachment portion 12. Furthermore, in the power supply device 10 of the present embodiment, as will be described later, it is possible to detect the remaining power amount of the attached battery pack 100 and automatically form an appropriate connection form.
- connection circuit 60 has a cut-off switch 66 interposed between the battery packs 100 connected in series regardless of the connection form. Can be made. Thereby, when changing the connection mode, the short circuit of the battery pack 100 can be reliably prevented by turning off (opening) the cutoff switch 66.
- the power supply device 10 includes a tool switch detection unit 30, a backup power supply unit 70, and a main controller 40.
- the main controller 40 is configured by using a microcomputer and has an arithmetic circuit and a memory circuit. It is connected to each relay 62 of the connection circuit 60, and the six relays 62 can be selectively switched.
- the main controller 40 is connected to the connection circuit 60 via the voltage detection lines 42 and 44, and the output voltage, energization current, and remaining power of each battery pack 100 are determined based on the voltage of the voltage detection lines 42 and 44. The amount and internal resistance can be detected.
- the main controller 40 can detect the output voltage of each battery pack 100 based on the voltage of the voltage detection line 44. Then, the main controller 40 can calculate the remaining power amount of each battery pack 100 based on the detected output voltage.
- the main controller 40 can detect the energization current of the battery pack 100 based on the voltage difference between the voltage detection line 42 and the voltage detection line 44.
- a voltage difference due to the diode 64 is generated between the voltage detection line 42 and the voltage detection line 44 according to the energization current of the battery pack 100.
- the main controller 40 can calculate the internal resistance of the battery pack 100 based on the detected output voltage and energization current of the battery pack 100.
- the main controller 40 is connected to each light emitting diode 18 of the display unit 16, and can selectively turn on or blink the three light emitting diodes 18.
- the main controller 40 is connected to the cutoff switch 66 of the connection circuit 60, and can turn the cutoff switch 66 on and off.
- the main controller 40 is connected to each communication terminal 56, and is connected to be communicable with the battery controller 114 of the battery pack 100. Thereby, the main controller 40 can read the use history information and product information stored in the battery controller 114.
- the backup power supply unit 70 receives power from the battery pack 100 and supplies power to the main controller 40.
- the backup power supply unit 70 includes a power storage unit such as a capacitor and a secondary battery, and can supply power to the main controller 40 even when the battery pack 100 is not attached. If each relay 62 is switched as shown in FIG. 2 in the initial state, power supply to the backup power supply unit 70 is performed when at least one battery pack 100 is attached to any one of the battery attachment units 12. Is started. In this case, the backup power supply unit 70 does not necessarily require a power storage unit.
- the tool switch detection unit 30 includes a capacitor 32, a resistor 34, a transistor 36, and a diode 38.
- the capacitor 32, the resistor 34, and the transistor 36 are connected in series.
- the diode 38 is connected in parallel to the transistor 36 in the direction of reverse polarity.
- the tool switch detection unit 30 is connected to the pair of output terminals 22 and 24 and the main controller 40.
- the main controller 40 can detect the voltage of the capacitor 32 and control the operation of the transistor 36.
- the main controller 40 can detect that the switch of the electric tool 200 is turned on by the tool switch detection unit 30.
- the main controller 40 detects the voltage of the capacitor 32. If the capacitor 32 is not charged, the main controller 40 charges the capacitor 32 by turning on the transistor 36. At this time, the main controller 40 gives a command to the cutoff switch 66 of the connection circuit 60 and also turns on the cutoff switch 66. Charging power for the capacitor 32 is supplied from the battery pack 100. When the main controller 40 detects the completion of charging of the capacitor 32, the main controller 40 turns off the cutoff switch 66 of the connection circuit 60 and the transistor 36 of the tool switch detection unit 30.
- the switch of the electric tool 200 When the switch of the electric tool 200 is turned on, the electric power charged in the capacitor 32 is supplied to the electric tool 200 via the pair of output terminals 22 and 24. At this time, the cutoff switch 66 of the connection circuit 60 is turned off. Therefore, the voltage of the capacitor 32 decreases or the voltage across the resistor 34 changes from a positive voltage to a negative voltage.
- the main controller 40 can detect that the switch of the electric power tool 200 is turned on by detecting the change in these voltages. On the other hand, when the main controller 40 detects that no current flows through all the battery packs 100, the main controller 40 determines that the switch of the electric power tool 200 is turned off.
- step S ⁇ b> 10 the power supply device 10 stands by until the battery pack 100 is attached to the battery attachment portion 12.
- the attachment of the battery pack 100 is detected by the main controller 40.
- the main controller 40 detects that the battery pack 100 is attached by monitoring the voltage of the voltage detection line 44.
- the main controller 40 proceeds to step S12 when four battery packs 100 are attached or when a predetermined time has elapsed since the first battery pack 100 was attached.
- FIG. 5A the following description is continued assuming that four battery packs 100a to 100d are attached.
- step S12 the main controller 40 detects the remaining power amount of each battery pack 100.
- the remaining power amount of the battery pack 100 is detected based on the output voltage of the battery pack 100. That is, the main controller 40 detects the output voltage of each battery pack 100 by the voltage detection line 44, and calculates the remaining power amount of each battery pack 100 based on the detected output voltage.
- the remaining power amount of one battery pack 100a is approximately 100% and the remaining power amounts of the other three battery packs 100b to 100d are approximately 40%.
- the remaining power amount of the battery pack 100 is schematically shown by hatching.
- step S14 the main controller 40 determines whether or not there are two or more dischargeable battery packs 100 based on the remaining power amount of each battery pack 100 detected in step S12.
- the main controller 40 proceeds to the process of step S16 if there are two or more battery packs 100 with remaining power, and proceeds to the process of step S50 if not. Even when only one battery pack 100 is attached, the main controller 40 proceeds to the process of step S50 because there are no two or more battery packs 100 with remaining power.
- step S50 the main controller 40 displays on the display unit 16 that the discharge is impossible, and prompts the user to replace the battery pack 100 (end of processing).
- the main controller 40 ranks the battery packs 100 based on the remaining power amount of each battery pack 100 detected in step S12. That is, the battery pack 100 having the largest remaining power amount X1 is the first battery pack 100, the battery pack 100 having the second largest remaining power amount X2 is the second battery pack 100, and the battery pack having the third largest remaining power amount X3.
- the third battery pack 100 is the fourth battery pack 100 having the fourth largest remaining power amount X4.
- the battery pack 100a having a remaining power amount of 100% is set as the first battery pack
- the battery packs 100b to 100d having the remaining power amount of 40% are respectively the second to fourth batteries. A pack.
- the main controller 40 executes a grouping process that divides the attached four battery packs 100 into two battery groups.
- the main controller 40 performs grouping of the battery packs 100 so that the difference generated between the total power amounts calculated for each battery group is minimized. Therefore, first, in step S18, the main controller 40 determines whether or not the following formula (1) is satisfied.
- the total power amount of a battery group means the total remaining power amount of one or a plurality of battery packs 100 included in the battery group. ⁇ X1- (X2 + X3 + X4) ⁇ ⁇ (X1 + X4)-(X2 + X3) ⁇ (1)
- the left side of the above formula (1) shows a case where one battery group is composed only of the first battery pack 100a and the other one battery group is composed of the second to fourth battery packs 100b to 100d (hereinafter referred to as the first battery pack 100a).
- 1 is a formula for calculating a difference generated between the total electric energy (X1 and X2 + X3 + X4) for each battery group.
- the right side of the above formula (1) includes one battery group composed of the first and fourth battery packs 100a and 100d, and the other one battery group composed of the second and third battery packs 100b and 100c.
- this is an equation for calculating a difference generated between the total electric energy (X1 + X4 and X2 + X3) for each battery group. That is, the above equation (1) is calculated between the difference between the total electric energy for each battery group in the case of the first grouping and the total electric energy for each battery group in the case of the second grouping. It is an expression for determining the magnitude of the difference that occurs. If the formula (1) is satisfied, the main controller 40 proceeds to step S20, and if not, the main controller 40 proceeds to step S22.
- step S20 grouping of the battery packs 100a to 100d is determined.
- the main controller 40 employs the first grouping. That is, the first battery pack 100a is assigned to one battery group, and the second to fourth battery packs 100b to 100d are assigned to another one battery group.
- the main controller 40 employs the second grouping. That is, the first and fourth battery packs 100a and 100d are assigned to one battery group, and the second and third battery packs 100b and 100dc are assigned to another battery group.
- a grouping with a smaller difference between the total power amounts calculated for each battery group is selected.
- a first grouping is selected.
- step S24 the main controller 40 determines whether or not the grouping has been changed in the grouping process described above. That is, it is determined whether the same grouping is selected again or a different grouping is selected as compared to before the grouping process. If there is a change in the grouping, the main controller 40 proceeds to step S26, otherwise skips to step S30. That is, if the grouping is not changed, the connection form is not changed.
- step S26 the main controller 40 turns off the cutoff switch 66 prior to the change of the connection form. Thereby, the intermediate potential connection line 68 of the connection circuit 60 is electrically disconnected, and an unintended connection path that erroneously shorts the battery pack 100, for example, is prevented.
- step S28 the main controller 40 selectively switches each relay 62 of the connection circuit 60 based on the determined grouping. Specifically, each relay 62 is selectively switched so that the battery packs 100 divided into the same battery group are connected in parallel and the battery packs 100 divided into different battery groups are connected in series. As assumed above, if the first grouping is selected here, each relay 62 is switched as shown in FIG. As a result, as shown in FIG. 5B, the connection circuit 60 connects the second to fourth battery packs 100b to 100d divided into the same battery group in parallel, and connects the second to fourth battery packs connected in parallel. The first battery pack 100a is connected in series to the fourth battery packs 100b to 100d.
- step S30 the main controller 40 calculates the total amount of power remaining in all the battery packs 100.
- step S ⁇ b> 32 the main controller 40 displays the calculated total power amount on the display unit 16.
- the power supply apparatus 10 of the present embodiment can supply almost all of the total power remaining in all the battery packs 100 by appropriately changing the connection form of the battery packs 100. Therefore, the total amount of power displayed by the display unit 16 and the amount of power actually supplied by the power supply device 10 are exactly the same.
- step S34 the power supply apparatus 10 stands by until the power tool 200 is switched on.
- the switch-on of the electric tool 200 is detected by the tool switch detection unit 30.
- the cut-off switch 66 of the connection circuit 60 is turned off, so that no electric power is supplied from the battery pack 100 to the power tool 200 even when the switch of the power tool 200 is turned on.
- the main controller 40 proceeds to the process of step S36.
- step S36 the main controller 40 turns on the cutoff switch 66 of the connection circuit 60. Thereby, power supply from the battery pack 100 to the electric tool 200 is started.
- step S38 the main controller 40 detects the output voltage and energization current of each battery pack 100. The output voltage and energization current of each battery pack 100 are detected based on the voltage of the voltage detection lines 42 and 44.
- step S40 the main controller 40 determines whether or not the switch of the electric power tool 200 is turned off.
- the switch-off of the electric tool 200 is performed based on the energization current detected in step S36. That is, the main controller 40 determines that the switch of the electric power tool 200 is turned off when the energization current of all the battery packs 100 is zero. If the switch of the electric power tool 200 is turned off, the main controller 40 proceeds to step S42 and turns off the cutoff switch 66. Then, the process returns to step S12.
- step S12 the main controller 40 directly returns from step S40 to step S12. In this case, power supply to the power tool 200 is continued.
- step S12 the above-described grouping process of the battery pack 100 and the change of the connection form based on the grouping process are executed again. In other words, while supplying power to the electric power tool 200, the connection form of the battery packs 100 is appropriately changed according to the remaining power amount of each battery pack 100.
- the remaining electric power of each battery pack 100 decreases.
- the first battery pack 100a consumes 90% of the amount of power
- the connection configuration shown in FIGS. 5A and 5B is maintained as it is, the power of the first battery pack 100a is exhausted first, and power is left in the other battery packs 100b to 100d. It will not be possible to supply power.
- FIG. 7 shows the energization current of each of the battery packs 100a to 100d. From time zero to time t1, power is supplied in the connection form shown in FIGS. 5A and 5B. From time t1 to time t2, power is supplied in the connection form shown in FIGS. 6A and 6B. Has been done. As shown in graphs A and B, until time t1, the energization current of the first battery pack 100a is large, and the energization currents of the second to fourth battery packs 100b to 100d are small. When the connection form is changed at time t1, as shown in the graph C, the energization currents of all the battery packs 100a to 100d become substantially equal.
- a graph D in FIG. 7 shows a case where the battery packs 100a to 100d are connected in the form shown in FIGS. 6A and 6B from the beginning (time zero). In this case, since the power of the second to fourth battery packs 100 having a small remaining power amount is exhausted at an early stage, as shown in the graph D, the power supply is terminated at an earlier time than the time t1.
- FIGS. 8 to 10 show a case where three battery packs 100 are attached to the power supply apparatus 10.
- each of FIGS. 8 to 10 includes four views (a) to (d).
- (a) shows a connection form formed first by the connection circuit 60
- (b) schematically shows a connection form shown by (a), and (c). Shows a connection form formed later by the connection circuit 60
- (d) schematically shows the connection form shown in (c).
- connection circuit 60 forms an appropriate connection form according to the remaining electric energy of each battery pack 100a to 100c. Therefore, as shown in FIGS.
- connection circuit 60 can realize substantially the same connection form regardless of the mounting positions of the battery packs 100a to 100c. After that, as shown in FIGS. 8 to 10 (c) and (d), even when the connection form is changed according to the change in the remaining power amount, the connection circuit 60 realizes substantially the same connection form. become.
- Example 2 Next, the power supply system of Example 2 will be described.
- the power supply system according to the second embodiment is obtained by changing the process executed by the main controller 40 in the power supply apparatus 10 according to the first embodiment. Since the mechanical and electrical configurations are not particularly changed from the first embodiment, the same reference numerals as those in the first embodiment are used in the following description.
- step S110 the main controller 40 detects the output voltage of each battery pack 100 (step S112).
- step S114 the main controller 40 determines whether there are two or more dischargeable battery packs 100 based on the output voltage of each battery pack 100 detected in step S112.
- the main controller 40 determines that the battery pack 100 cannot be discharged when the detected output voltage is lower than a predetermined discharge end voltage. If there are two or more battery packs 100 that can be discharged, the main controller 40 proceeds to the process of step S116, otherwise proceeds to the process of step S170.
- step S170 the main controller 40 displays on the display unit 16 that the discharge is impossible, and prompts the user to replace the battery pack 100 (end of processing).
- the main controller 40 ranks the battery packs 100 based on the output voltage of each battery pack 100 detected in step S112. That is, the highest output voltage V1 is the first battery pack 100, the second highest output voltage V2 is the second battery pack 100, and the third highest output voltage V3 is the third battery pack 100.
- the fourth battery pack 100 has the fourth highest output voltage V4. Note that the output voltage of the battery pack 100 depends on the remaining power amount of the battery pack 100. Therefore, the ranking of the battery pack 100 based on the output voltage of the second embodiment and the ranking of the battery pack 100 based on the remaining power amount of the first embodiment often have the same result.
- the main controller 40 executes a grouping process that divides the attached four battery packs 100 into two battery groups.
- the main controller 40 performs grouping of the battery packs 100 so that the difference generated between the total output voltages calculated for each battery group is minimized. Therefore, first, in step S118, the main controller 40 determines whether or not the following equation (2) is satisfied. ⁇ V1- (V2 + V3 + V4) ⁇ ⁇ (V1 + V4)-(V2 + V3) ⁇ (2)
- the left side of the above equation (2) shows a case where one battery group is composed of only the first battery pack 100a and the other one battery group is composed of the second to fourth battery packs 100b to 100d (hereinafter referred to as the first battery pack 100a).
- 1 is a formula for calculating a difference generated between the total output voltages (V1 and V2 + V3 + V4) for each battery group.
- the right side of the above equation (2) includes one battery group composed of the first and fourth battery packs 100a and 100d, and the other one battery group composed of the second and third battery packs 100b and 100c. In this case (hereinafter referred to as the second grouping), the difference between the total output voltages (V1 + V4 and V2 + V3) for each battery group is calculated.
- the above equation (2) is obtained by calculating the difference between the total output voltage for each battery group in the case of the first grouping and the total output voltage for each battery group in the case of the second grouping. This is a formula for determining the magnitude of the difference between the two. If the expression (2) is satisfied, the main controller 40 proceeds to step S120, and if not, the main controller 40 proceeds to step S122.
- steps S120 and S122 grouping of the battery packs 100 is determined.
- the main controller 40 employs the first grouping.
- the main controller 40 employs the second grouping. Thereby, a grouping with a smaller difference between the total output voltages calculated for each battery group is selected from the first and second groupings.
- steps S124 to S1208 the connection form of the four battery packs 100 is changed based on the grouping determined in the grouping process.
- the processing of steps S124 to S128 is substantially the same as the processing of steps S24 to S28 of FIG. 4A described in the first embodiment.
- step S130 the main controller 40 calculates the total amount of power remaining in all the battery packs 100. The total electric energy is calculated based on the detected output voltage of each battery pack 100.
- step S132 the main controller 40 displays the calculated total power amount on the display unit 16.
- step S134 the power supply apparatus 10 stands by until the power tool 200 is turned on. When the switch of the electric power tool 200 is turned on and the process proceeds to step S136, the main controller 40 turns on the cutoff switch 66 of the connection circuit 60. Thereby, power supply from the battery pack 100 to the electric tool 200 is started.
- step S138 the main controller 40 detects the output voltage and energization current of each battery pack 100.
- the processing in steps S130 to S138 is substantially the same as the processing in steps S30 to S38 in FIGS. 4A and 4B described in the first embodiment.
- step S140 the main controller 40 determines whether or not the difference between the output voltage V1 of the first battery pack 100 having the highest voltage and the output voltage V4 of the fourth battery pack 100 having the lowest voltage is less than a predetermined determination value. Determine whether.
- the difference V1-V4 between the output voltages is less than the determination value, it can be determined that the output voltages of the four battery packs 100 are substantially the same, and the variation can be ignored. That is, it can be determined that there is no large variation in the remaining power amount among the four battery packs 100.
- the process proceeds to step S142, and a connection form change process based on the internal resistance of the battery pack 100 is executed.
- the process skips to step S156 and the current connection configuration based on the output voltage of the battery pack 100 is maintained.
- step S142 the main controller 40 detects the internal resistance of each battery pack 100.
- the internal resistance of the battery pack 100 is calculated from the output voltage and energization current of the battery pack 100 detected in step S112 and step S138. That is, for each battery pack 100, the internal resistance is calculated using the output voltage when not energized, the output voltage when energized, and the energized current.
- step S144 the main controller 40 calculates the difference between the detected maximum internal resistance R1 and the minimum internal resistance R4, and determines whether or not the internal resistance difference R1-R4 exceeds a predetermined determination value.
- the difference R1-R4 between the internal resistances is equal to or less than the determination value, it can be determined that the internal resistances of the four battery packs 100 are substantially uniform, and variations in the internal resistance can be ignored. In this case, the process skips to step S156 and the current connection configuration based on the output voltage of the battery pack 100 is maintained.
- the internal resistance difference R1-R4 exceeds the determination value, it can be determined that there is a non-negligible variation among the four battery packs 100. In this case, the process proceeds to step S146, and the connection form changing process based on the internal resistance is continued.
- step S146 the main controller 40 executes a grouping process for dividing the four battery packs 100 into two battery groups based on the internal resistance of each battery pack 100.
- this grouping process two battery packs 100 each having the largest internal resistance R1 and the second largest internal resistance R2 are allocated to one battery group, and the third largest internal resistance R3 and the fourth largest internal resistance R4 are assigned.
- the two battery packs 100 that are respectively provided are distributed to another battery group.
- the battery packs 100 having similar internal resistances are distributed to the same battery group.
- step S148 the connection form of the battery pack 100 is changed based on the determined grouping.
- step S148 the main controller 40 determines whether or not the grouping has been changed in the grouping process described above. If there is a change in the grouping, the main controller 40 proceeds to step S150, otherwise skips to step S156. That is, if the grouping is not changed, the connection form is not changed.
- step S150 the main controller 40 turns off the cutoff switch 66 prior to changing the connection mode.
- step S152 the main controller 40 selectively switches each relay 62 of the connection circuit 60 based on the determined grouping.
- each relay 62 is selectively switched so that the battery packs 100 divided into the same battery group are connected in parallel and the battery packs 100 divided into different battery groups are connected in series. That is, the connection form shown in FIG.
- step S154 the main controller 40 turns on the cutoff switch 66 again. Thereby, the power supply to the power tool 200 is resumed.
- the battery packs 100 having similar internal resistances are connected in parallel by the change in the connection form described above. Thereby, it is possible to prevent the energization current from being biased in one battery pack 100 between two battery packs 100 connected in parallel. As a result, overheating and abnormal deterioration of the battery pack 100 are suppressed.
- step S156 the main controller 40 determines whether or not the power tool 200 is switched off. If the switch of the electric power tool 200 is turned off, the main controller 40 proceeds to step S160 and turns off the cutoff switch 66. Then, the process returns to step S112. On the other hand, if the switch of the electric power tool 200 is not turned off, the process proceeds to step S158, and the main controller 40 detects the presence or absence of the battery pack 100 that cannot be discharged. Whether or not the battery pack 100 can be discharged is determined based on the output voltage of the battery pack 100 detected in step S138. If there is a battery pack 100 that cannot be discharged, the main controller 40 proceeds to step S160 and turns off the cutoff switch 66. Otherwise, the main controller 40 returns to the process of step S112.
- the connection form of the battery pack 100 can be changed based on the output voltage and energization current of the battery pack 100.
- the main controller 40 can detect the internal resistance from the output voltage and energization current of the battery pack 100, and can determine the connection form of the battery pack 100 based on the detected internal resistance. Therefore, more electric power stored in the battery pack 100 can be supplied while suppressing overheating and abnormal deterioration of the battery pack 100.
- the internal resistance of the battery pack 100 increases in accordance with the usage history (usage amount, usage period, experience temperature) of the battery pack 100.
- the usage history of the battery pack 100 may be detected, and the connection form of the battery pack 100 may be determined based on the detected usage history.
- the battery controller 114 of the battery pack 100 stores usage history information indicating the usage history of the battery pack 100. Therefore, the main controller 40 can determine the connection form based on the usage history by reading the usage history information from the battery controller 114.
- the power supply device 10 only needs to be able to attach at least three battery packs 100, and can have a structure in which more battery packs 100 can be attached.
- the configuration of the connection circuit 60 may be changed according to the number of battery packs 100 that can be attached.
- FIG. 12 shows an example of the connection circuit 60 corresponding to the six battery packs 100.
- this connection circuit 60 can connect three battery packs 100 in series, and can supply electric power to electric devices such as the electric tool 200 at a voltage that is three times the output voltage of the battery pack 100. .
- the connection circuit 60 shown in FIG. 12 has two systems of medium potential connection lines 68 a and 68 b and is configured using 22 relays 62.
- the electric power supply apparatus 10 of the present embodiment described above uses the rechargeable battery pack 100, according to the technology adopted in the electric power supply apparatus 10, a non-rechargeable battery (primary battery) is used.
- An electric power supply device can also be realized.
- a conventional electric device using a plurality of dry batteries it is recommended to replace all dry batteries at the same time, and it is prohibited to mix new dry batteries with old dry batteries. Therefore, even if the user owns a dry battery that is not new but still usable, the user needs to purchase a new number of dry batteries required by the electric equipment.
- the technology of the power supply device 10 of the present specification is employed, the user can effectively use a dry battery that is not new but can still be used.
- the power supply apparatus 10 of the present embodiment is independent of the electrical equipment, the power supply apparatus 10 may be integrated into the electrical equipment.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
Description
実施例の電力供給システムについて、図面を参照しながら説明する。図1に示すように、電力供給システムは、電力供給装置10と複数のバッテリパック100を備えている。電力供給装置10は、複数のバッテリパック100が取り付けられ、複数のバッテリパック100から電動工具200に電力を供給する装置である。ここで、電力供給装置10は、電動工具200に限られず、他の電気機器に電力を供給することもできる。また、本実施例の電力供給装置10は電動工具200から独立しているが、電力供給装置10は電力を供給する電気機器へ一体に組込んでもよい。
│X1-(X2+X3+X4)│<│(X1+X4)-(X2+X3)│ ・・(1)
次に、実施例2の電力供給システムについて説明する。実施例2の電力供給システムは、実施例1の電力供給装置10において、メインコントローラ40が実行する処理を変更したものである。機械的及び電気的な構成については、実施例1から特に変更を要さないので、以下の説明では実施例1と同一の参照番号を用いる。
│V1-(V2+V3+V4)│<│(V1+V4)-(V2+V3)│ ・・(2)
Claims (8)
- 複数のバッテリから電気機器に電力を供給する電力供給装置であり、
少なくとも三つのバッテリが取付可能なバッテリ取付部と、
バッテリ取付部に取付けられた少なくとも三つのバッテリを電気的に接続する接続回路を備え、
前記接続回路は、少なくとも二つのバッテリを並列に接続するとともに、その並列に接続した少なくとも二つのバッテリに、他の少なくとも一つのバッテリを直列に接続可能であることを特徴とする電力供給装置。 - 前記接続回路は、バッテリ取付部に取り付けられたバッテリの位置を変更することなく、並列に接続するバッテリの組み合わせを変更可能であることを特徴とする請求項1に記載の電力供給装置。
- バッテリ取付部に取付けられた各々のバッテリの状態を示す指標を少なくとも一つ検出する検出部と、
検出部が検出した指標に基づいて、バッテリ取付部に取付けられた少なくとも三つのバッテリを、少なくとも一つのバッテリグループに少なくとも二つのバッテリを含まれるように、少なくとも二つのバッテリグループに区分するグルーピング処理を実行する処理部を備え、
前記接続回路は、同一のバッテリグループに区分されたバッテリ同士を並列に接続するとともに、異なるバッテリグループに区分されたバッテリ同士を直列に接続することを特徴とする請求項1又は2に記載の電力供給装置。 - 前記検出部は、バッテリの状態を示す指標として、バッテリに残存する電力量、バッテリの電圧、バッテリの内部抵抗、バッテリの通電電流、バッテリの使用量、バッテリの劣化状態、バッテリの温度、の少なくとも一つを検出することを特徴とする請求項3に記載の電力供給装置。
- 前記検出部は、少なくとも各々のバッテリに残存する電力量を検出し、
前記処理部は、バッテリグループ毎の合計電力量の間に生じる差が小さくなるように、前記グルーピング処理を実行することを特徴とする請求項3に記載の電力供給装置。 - 前記処理部は、少なくとも2種類のグループ分けについてバッテリグループ毎の合計電力量の間に生じる差をそれぞれ計算し、計算された差が最も小さいグループ分けを選択することを特徴とする請求項5に記載の電力供給装置。
- 前記接続回路がバッテリの接続形態を変更する間、前記接続回路を電気的に切断する遮断器をさらに備えることを特徴とする請求項1から6のいずれか一項に記載の電力供給装置。
- 前記遮断器は、前記接続回路が形成するバッテリの接続形態にかかわらず、直列に接続される二つのバッテリの間に位置することを特徴とする請求項7に記載の電力供給装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2012122213/07A RU2012122213A (ru) | 2009-10-30 | 2010-09-02 | Устройство источника питания |
CN201080048806.8A CN102598463B (zh) | 2009-10-30 | 2010-09-02 | 电力供给装置 |
EP10826429.2A EP2495843B1 (en) | 2009-10-30 | 2010-09-02 | Power supply device |
US13/503,532 US9112360B2 (en) | 2009-10-30 | 2010-09-02 | Power supply device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009-250263 | 2009-10-30 | ||
JP2009250263A JP5484860B2 (ja) | 2009-10-30 | 2009-10-30 | 電力供給装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011052294A1 true WO2011052294A1 (ja) | 2011-05-05 |
Family
ID=43921724
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2010/064999 WO2011052294A1 (ja) | 2009-10-30 | 2010-09-02 | 電力供給装置 |
Country Status (6)
Country | Link |
---|---|
US (1) | US9112360B2 (ja) |
EP (1) | EP2495843B1 (ja) |
JP (1) | JP5484860B2 (ja) |
CN (1) | CN102598463B (ja) |
RU (1) | RU2012122213A (ja) |
WO (1) | WO2011052294A1 (ja) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2110921B1 (en) | 2008-04-14 | 2013-06-19 | Stanley Black & Decker, Inc. | Battery management system for a cordless tool |
JP5498414B2 (ja) * | 2011-02-28 | 2014-05-21 | 株式会社東芝 | 試験装置および電池パックの試験方法 |
JP2013046512A (ja) * | 2011-08-25 | 2013-03-04 | Makita Corp | 電源装置 |
DE212012000160U1 (de) | 2011-08-25 | 2014-04-02 | Makita Corp. | Stromversorgungsvorrichtung |
JP2014017954A (ja) * | 2012-07-07 | 2014-01-30 | Hitachi Koki Co Ltd | 電源装置 |
JP2014150678A (ja) * | 2013-02-01 | 2014-08-21 | Makita Corp | 電動機械器具、及びその本体 |
CN105531866B (zh) * | 2013-04-30 | 2018-03-20 | 英属盖曼群岛商立凯绿能移动科技股份有限公司 | 大型电动车电源架构及其电池箱轮休排序控制方法 |
WO2015061370A1 (en) | 2013-10-21 | 2015-04-30 | Milwaukee Electric Tool Corporation | Adapter for power tool devices |
GB201403971D0 (en) | 2014-03-06 | 2014-04-23 | 7Rdd Ltd | Portable power supply improvements |
MX347885B (es) * | 2014-05-16 | 2017-05-16 | Techtronic Power Tools Tech Ltd | Paquete de multi-baterias de herramientas electricas. |
CN107078533B (zh) | 2014-05-18 | 2022-05-10 | 百得有限公司 | 电动工具*** |
US9893384B2 (en) | 2014-05-18 | 2018-02-13 | Black & Decker Inc. | Transport system for convertible battery pack |
JP6381298B2 (ja) * | 2014-05-30 | 2018-08-29 | 菊水電子工業株式会社 | 二次電池内部抵抗測定装置および測定方法 |
DE102015116513A1 (de) * | 2015-09-29 | 2017-03-30 | Metabowerke Gmbh | Adapteranordnung |
WO2018119256A1 (en) | 2016-12-23 | 2018-06-28 | Black & Decker Inc. | Cordless power tool system |
DE102017100513A1 (de) * | 2017-01-12 | 2018-07-12 | Metabowerke Gmbh | Akkubetriebene Elektrowerkzeugmaschine |
JP7209250B2 (ja) * | 2018-11-27 | 2023-01-20 | パナソニックIpマネジメント株式会社 | 電池ユニット、アダプタ、電動工具システム、充電システム |
DE102019218584A1 (de) * | 2019-11-29 | 2021-06-02 | Robert Bosch Gmbh | Akkubetriebenes Gerät mit einer Akkuschnittstelle |
JP2021136854A (ja) * | 2020-02-28 | 2021-09-13 | 工機ホールディングス株式会社 | 電源装置及びシステム |
JP2021136853A (ja) * | 2020-02-28 | 2021-09-13 | 工機ホールディングス株式会社 | 電源装置 |
DE102021214995A1 (de) | 2021-12-23 | 2023-06-29 | Robert Bosch Gesellschaft mit beschränkter Haftung | Elektrisches Gerät mit einer Mehrzahl elektromechanischer Akkuschnittstellen |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08256404A (ja) * | 1995-03-16 | 1996-10-01 | Honda Motor Co Ltd | 電気自動車駆動用電源装置 |
JP2000308268A (ja) | 1999-04-15 | 2000-11-02 | Makita Corp | 充電式電動工具 |
WO2007046138A1 (ja) * | 2005-10-19 | 2007-04-26 | Limited Company Tm | キャパシタを用いた蓄電装置とその制御方法 |
JP2008067500A (ja) * | 2006-09-07 | 2008-03-21 | Nissan Motor Co Ltd | 電力供給装置 |
JP2010172062A (ja) * | 2009-01-20 | 2010-08-05 | Nissan Motor Co Ltd | 電力供給装置 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5712553A (en) * | 1996-01-11 | 1998-01-27 | Sharp Microelectronics Technology, Inc. | Battery transposition system and method |
KR20000057966A (ko) * | 1999-02-12 | 2000-09-25 | 오세광 | 충전용 배터리 관리기 및 그 관리기에 의한 충전용 배터리관리 방법 |
US6642692B2 (en) * | 2000-06-23 | 2003-11-04 | Honda Giken Kogyo Kabushiki Kaisha | Charge equalizing device for power storage unit |
AUPR269301A0 (en) * | 2001-01-24 | 2001-02-22 | Cochlear Limited | Power supply for a cochlear implant |
JP4966479B2 (ja) * | 2001-10-11 | 2012-07-04 | デノヴォ リサーチ エルエルシー | デジタル電池 |
US7075194B2 (en) | 2003-07-31 | 2006-07-11 | The Titan Corporation | Electronically reconfigurable battery |
US20060092583A1 (en) * | 2004-10-01 | 2006-05-04 | Alahmad Mahmoud A | Switch array and power management system for batteries and other energy storage elements |
CN2826797Y (zh) * | 2005-10-31 | 2006-10-11 | 龙丽梅 | 电动自行车滑行、骑行自动充电装置 |
JP4784906B2 (ja) | 2006-02-28 | 2011-10-05 | 日立工機株式会社 | コードレス電動工具及びこれに用いられるバッテリ装置 |
US7893562B2 (en) * | 2006-03-03 | 2011-02-22 | Nec Corporation | Electric power supply system |
TW201103220A (en) * | 2009-07-06 | 2011-01-16 | Shun-Hsing Wang | Apparatus and method for managing plural secondary batteries |
-
2009
- 2009-10-30 JP JP2009250263A patent/JP5484860B2/ja active Active
-
2010
- 2010-09-02 WO PCT/JP2010/064999 patent/WO2011052294A1/ja active Application Filing
- 2010-09-02 RU RU2012122213/07A patent/RU2012122213A/ru not_active Application Discontinuation
- 2010-09-02 EP EP10826429.2A patent/EP2495843B1/en not_active Not-in-force
- 2010-09-02 CN CN201080048806.8A patent/CN102598463B/zh active Active
- 2010-09-02 US US13/503,532 patent/US9112360B2/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08256404A (ja) * | 1995-03-16 | 1996-10-01 | Honda Motor Co Ltd | 電気自動車駆動用電源装置 |
JP2000308268A (ja) | 1999-04-15 | 2000-11-02 | Makita Corp | 充電式電動工具 |
WO2007046138A1 (ja) * | 2005-10-19 | 2007-04-26 | Limited Company Tm | キャパシタを用いた蓄電装置とその制御方法 |
JP2008067500A (ja) * | 2006-09-07 | 2008-03-21 | Nissan Motor Co Ltd | 電力供給装置 |
JP2010172062A (ja) * | 2009-01-20 | 2010-08-05 | Nissan Motor Co Ltd | 電力供給装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2495843A4 |
Also Published As
Publication number | Publication date |
---|---|
EP2495843A1 (en) | 2012-09-05 |
CN102598463B (zh) | 2015-07-01 |
EP2495843B1 (en) | 2015-10-14 |
US9112360B2 (en) | 2015-08-18 |
CN102598463A (zh) | 2012-07-18 |
RU2012122213A (ru) | 2013-12-10 |
EP2495843A4 (en) | 2014-05-07 |
US20120205984A1 (en) | 2012-08-16 |
JP5484860B2 (ja) | 2014-05-07 |
JP2011097766A (ja) | 2011-05-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5484860B2 (ja) | 電力供給装置 | |
US9768625B2 (en) | Battery pack, and method for controlling the same | |
US20070136984A1 (en) | Rechargeable vacuum cleaner | |
US9455578B2 (en) | Direct current (DC) microgrid charge/discharge system for secondary batteries connected in series | |
US9065280B2 (en) | System and method of using high energy battery packs | |
CN107689665B (zh) | 发动机启动用的蓄电装置及其控制方法、车辆 | |
JP4381239B2 (ja) | 車両用の電源装置 | |
US11146094B2 (en) | Electrical apparatus | |
US9465079B2 (en) | Battery pack | |
JP2014046388A (ja) | 電動工具 | |
MX2011002544A (es) | Cargador de baterías. | |
JP5892370B2 (ja) | 充電器及び電力供給システム | |
WO2014119184A1 (ja) | 電動機械器具、及びその本体 | |
WO2011034201A1 (en) | Battery pack and power tool using the same | |
WO2014103306A2 (en) | Power-supplying device | |
WO2012039418A1 (ja) | 電動工具 | |
JP6373662B2 (ja) | バッテリパック | |
JP6373661B2 (ja) | バッテリパック | |
GB2433424A (en) | Rechargeable vacuum cleaner | |
JP2018117438A (ja) | リチウムイオンキャパシタを備えた電源モジュール | |
JP6373660B2 (ja) | バッテリパック | |
WO2022201466A1 (ja) | 電源装置 | |
WO2021182308A1 (ja) | アダプタ及び直流電力利用システム | |
EP4231486A1 (en) | Current consumption control device and battery management device comprising same | |
US20240097293A1 (en) | Battery pack |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201080048806.8 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 10826429 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13503532 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2010826429 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2012122213 Country of ref document: RU |