CN112087016A - Adapter - Google Patents
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- CN112087016A CN112087016A CN201911047624.8A CN201911047624A CN112087016A CN 112087016 A CN112087016 A CN 112087016A CN 201911047624 A CN201911047624 A CN 201911047624A CN 112087016 A CN112087016 A CN 112087016A
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- Prior art keywords
- interface
- battery pack
- power supply
- adapter
- direct current
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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
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
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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
Abstract
The invention discloses an adapter, comprising: the adaptive interface is used for connecting a battery pack which can be detachably connected with the electric tool; the first direct current interface is arranged to be electrically connected with an external power supply device; the first voltage conversion circuit is connected between the first direct current interface and the adapting interface in series and is used for converting the electric energy of the external power supply device into the electric energy of the adapting battery pack to be output; the control module is connected between the first direct current interface and the adaptive interface and is connected with the first voltage conversion circuit, and the control module is configured to be capable of controlling the current direction and the output voltage of the voltage conversion circuit according to the signal states of the first direct current interface and the adaptive interface. The adapter is simple in structure, low in cost and convenient to carry, expands the use scenes of the battery pack of the electric tool and is convenient for users to use.
Description
Technical Field
The invention relates to an adapter, in particular to an adapter applied to the field of electric tools.
Background
With the development of power tools, portable power tools have been increasingly used in various fields, such as industry, construction industry, garden machinery industry, and the like. There is an increasing demand for portable power tools.
At present, a battery pack is mostly adopted to supply power for the electric tool. The battery pack can only be adapted to an electric tool, and cannot supply power to external electronic equipment, so that the use scene of the battery pack is limited.
In addition, the existing electric tool needs to be provided with a special charger to charge the battery pack, and the existing charger is complex in structure, high in manufacturing cost, large in size and inconvenient to carry. Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide the adapter which is low in cost, convenient to carry and capable of expanding the use scene of the battery pack of the electric tool.
In order to achieve the above object, the present invention adopts the following technical solutions:
an adapter, comprising: the adaptive interface is used for connecting a battery pack which can be detachably connected with the electric tool; the first direct current interface is arranged to be electrically connected with an external power supply device, and the input power of the direct current interface is more than 10W; the input voltage range of the first direct current interface is 5-20V; the first voltage conversion circuit is connected between the first direct current interface and the adapting interface in series and is used for converting the electric energy of the external power supply device into the electric energy which is adapted to the battery pack and outputting the electric energy; the control module is connected between the first direct current interface and the adaptation interface and is connected with the first voltage conversion circuit, and the control module is configured to control the current direction and the output voltage of the voltage conversion circuit according to the signal states of the first direct current interface and the adaptation interface; when the first direct current interface is connected to an external power supply device and the second direct current interface is connected to an external power utilization device, the external power supply device can charge the battery pack through the first direct current interface, and the external power supply device can charge the external power utilization device through the second direct current interface.
Preferably, the battery pack includes: a guide slot for slidable connection with the second adapter; the adaptation interface comprises: the electric connecting terminal is electrically connected with the battery pack terminal; a guide rail for cooperating with the guide groove to slidably couple the battery pack to the adapter.
Preferably, the nominal voltage range of the battery pack is: 10V to 120V.
Preferably, the first dc interface has at least two signal states, a charging state and a discharging state.
Preferably, the first dc interface includes: the detection terminal is used for detecting the signal state of the first direct current interface; when the first direct current interface is connected to the external power supply device, the detection terminal sends a charging control signal to the control module when detecting that the first direct current interface is in a charging state, so that the control module controls the current direction of the voltage conversion circuit to enable the external power supply device to charge the battery pack.
Preferably, the first dc interface includes: the detection terminal is used for detecting the signal state of the first direct current interface; when the first direct current interface is connected to an external electric device, the detection terminal sends a discharge control signal to the control module when detecting that the first direct current interface is in a discharge state, so that the control module controls the current direction of the voltage conversion circuit and the battery pack charges the external electric device.
Preferably, the adapter further comprises a communication module configured to receive the charging control signal from the detection terminal and transmit the charging control signal to the control module; the control module comprises a main controller which is set to be capable of receiving communication signals of the battery pack information from the battery pack and transmitting the communication signals of the battery pack information to the communication module; the communication module is configured to receive a communication signal of information related to the battery pack and adjust a voltage, a current, and a power of the direct current to charge the battery pack.
Preferably, the control module further comprises: a bidirectional power supply controller; the main controller is also arranged to be capable of receiving the charging control signal and outputting a control signal to the bidirectional power supply controller; the bidirectional power supply controller is arranged to be capable of outputting a power supply control signal to the voltage conversion circuit according to a control signal from the controller so as to control the current direction of the voltage conversion circuit and control the voltage conversion circuit to adjust the voltage value, so that the external power supply device charges the battery pack.
Preferably, the first dc interface is determined to be in a charging state when the detection terminal detects a high level.
Preferably, the first dc interface is determined to be in a discharge state when the detection terminal detects a low level.
Preferably, the adapter further comprises: and the second voltage conversion circuit is arranged to be connected in series between the second direct current interface and the adaptation interface and is used for converting the electric energy of the battery pack or the external power supply device into the electric energy adapted to the external power utilization device and outputting the electric energy.
The adapter is simple in structure, low in cost and convenient to carry, expands the use scenes of the battery pack of the electric tool and is convenient for users to use.
Drawings
Fig. 1 is a schematic structural view of a combination of a battery pack and an adapter as one example;
FIG. 2 is a schematic diagram of the construction of a battery pack in the battery pack and adapter combination shown in FIG. 1;
FIG. 3 is a schematic diagram of the structure of an adapter in the battery pack and adapter combination shown in FIG. 1;
FIG. 4 is a schematic view of the battery pack of FIG. 2 in use in combination with a power tool;
FIG. 5 is a powered system having the combination battery pack and adapter of FIG. 1;
FIG. 6 is a circuit block diagram of one of the embodiments of the adapter shown in FIG. 3;
FIG. 7 is a circuit block diagram of a second embodiment of the adapter shown in FIG. 3;
FIG. 8 is a block circuit diagram of a third embodiment of the adapter shown in FIG. 3;
FIG. 9 is a block circuit diagram of the fourth embodiment of the adapter shown in FIG. 3;
FIG. 10 is a block circuit diagram of five of the embodiments of the adapter shown in FIG. 3;
FIG. 11 is a block circuit diagram of the sixth embodiment of the adapter shown in FIG. 3;
fig. 12 is a circuit block diagram of a seventh embodiment of the adapter shown in fig. 3.
Detailed Description
The invention is described in detail below with reference to the figures and the embodiments.
As shown in fig. 1-4, a battery pack and adapter combination 10 includes a battery pack 11 and an adapter 12. Wherein the battery pack 11 is used for supplying power to the power tool 20 (as shown in fig. 4), the adapter 12 can make the battery pack 11 output power. In some embodiments, the nominal voltage range of the battery pack 11 is: 10V-60V. The electric quantity of the battery pack 20 is equal to or greater than 100Wh and equal to or less than 2000 Wh. It will be appreciated that in some embodiments, the nominal voltage range of the battery pack 11 may also be: 18V-24V, 24V-40V, 40V-60V or 60V-120V.
Referring to fig. 2, the battery pack 11 includes: a battery 111 for storing electrical energy and a first housing 114 containing the battery, a battery pack terminal including a positive terminal 112 of the battery pack and a negative terminal 113 of the battery pack. The battery pack 11 outputs electric power through a positive terminal 112 of the battery pack and a negative terminal 113 of the battery pack. A first coupling portion 115 is formed on the first housing. The first coupling portion 115 is detachably connectable to a coupling portion of the power tool 20 so that the battery pack 11 can supply power to the power tool. The first coupling portion 115 also enables the battery pack 11 to be electrically connected to the adapter 12 when the battery pack 11 is coupled to the adapter 12.
Referring to fig. 3, the adapter 12 includes: a second housing 122 and an interface 124. The second housing 122 is formed with a fitting interface 121, and the fitting interface 121 includes an electrical connection terminal 121 and a second coupling portion 123. The second coupling portion 123 may be coupled to the first coupling portion 115 of the battery pack, and when the first coupling portion 115 of the battery pack is coupled to the second coupling portion 123, the positive terminal 112, the negative terminal 113, and the electrical connection terminal 121 of the power source are connected to receive or output electrical energy. In some embodiments, the second coupling portion 123 forms a slot in which the electrical connection terminal 121 is disposed, and in other embodiments, the first coupling portion forms a guide groove, and the second coupling portion is provided with a guide rail to be coupled to the adapter in cooperation with the guide groove such that the battery pack can be slidably coupled along the slide rail. An interface 124 that can be charged and discharged is also provided on the second housing. The interface 124 connects an external power-using device or an external power-supplying device.
Referring to fig. 5, a power utilization system 30 is shown, the power utilization system 30 comprising: a battery pack 31, a first adapter 301, a second adapter 32, and an external power consumption device 302.
The battery pack 31 is used at least for supplying power to the power tool; the battery pack comprises a battery pack interface which can be detachably connected with the electric tool;
the first adaptor 301 comprises a power plug, an ac input interface, an ac-dc conversion circuit and a dc output interface.
Wherein, the power plug is used for inserting alternating current, and in some embodiments, the alternating current plug is plugged into an alternating current socket to insert alternating current commercial power. The value range of the alternating current accessed by the plug is 110V-130V or 210V-230V. The alternating current input interface is electrically connected with the plug to access alternating current; the alternating current-direct current conversion circuit is electrically connected with the alternating current input interface so as to convert alternating current into direct current; the direct current output interface is electrically connected with the alternating current-direct current conversion circuit to output direct current. In this embodiment, the first adapter 301 can directly supply power to an electronic terminal such as a notebook computer, a mobile phone, or a mobile power supply.
The second adapter 32 can be electrically connected to the battery pack 31, and can charge the battery pack 31 with a charging power greater than 10W. The second adapter comprises an adapter interface and a first direct current interface 321, the adapter interface is detachably connected with the battery pack 31 interface, and the first direct current interface 321 is electrically connected with the direct current output interface, wherein the value range of the input and output voltage of the first direct current interface 321 is 5V-20V, and the value range of the input and output power of the first direct current interface 321 is greater than 10W.
In some embodiments, the second adapter further comprises a second dc interface 322, and the second dc interface 322 is connected to the external power consumer 302 to provide dc power from the first adapter or power from the battery pack to the external power consumer simultaneously. In some embodiments, the output power of the second dc interface has a value range greater than 10W; the value range of the discharge voltage of the second direct current interface is as follows: 5V to 20V. In some embodiments, the external powered device 302 is a mobile phone, a tablet computer, wearable equipment, or the like.
The adapter 32 is configured with a first dc interface 321 and a second dc interface 322, when the electric quantity of the mobile phone is insufficient, the first dc interface 321 is connected with the adapter of the notebook computer, the second interface is connected with the notebook computer, and the notebook computer and the battery pack are charged by the ac power connected with the adapter of the notebook computer.
Referring to fig. 6, a block diagram of an adapter as an embodiment is shown. The adapter 40 includes a first dc interface 42, an adapter interface 41, and a circuit board 44.
The adapter interface 41 is used for electrically connecting the battery pack.
The first dc interface 42 is used to connect the external power consumption device 401 or the external power supply device 402. The first dc interface has two signal states, a charging state and a discharging state, and receives the power from the external power supply device 402 to charge the battery pack when the first dc interface is in the charging state, and provides the power of the battery pack to the external power consumption device 401 when the first dc interface 42 is in the discharging state. The first dc interface 42 includes a positive terminal 421, a negative terminal 422, and a detection terminal 423. The positive terminal 421 and the negative terminal 422 are used for inputting or outputting electric energy, the detection terminal 423 is used for detecting a signal state of the dc interface, and the first dc interface 42 has a charging state, a discharging state, and an idle state. When the first dc interface 42 is connected to the external power supply device 402, the detection terminal 423 detects that the dc interface 42 is in a charging state, and sends a charging control signal to the circuit board, so that the external power supply device charges the battery pack. When the first dc interface 42 is connected to the external power consumption device 401, the detection terminal 423 detects that the dc interface 42 is in a discharge state, and sends a discharge control signal to the circuit board 44, so that the battery pack charges the external power consumption device 401.
The circuit board 44 is connected in series between the adapter interface 41 and the first dc interface 42. As one of specific embodiments, the circuit board 44 is provided with a controller 441, a first communication module 442, a bidirectional power supply controller 443, and a voltage conversion circuit 444.
When the first dc interface 42 is connected to the external power supply device, the detection terminal 423 detects that the first dc interface 42 is in the charging state and sends the charging control signal to the voltage conversion circuit 444, and specifically, the detection terminal 423 detects that the first dc interface 42 is in the charging state and sends the charging control signal to the first communication module 442.
The first communication module 442 receives the charge control signal from the detection terminal 423 and transmits the charge control signal to the controller 441. The controller 441 receives a battery pack communication signal from the battery pack related information and passes the battery pack communication signal to the first communication module 442. The first communication module 442 receives a communication signal of information about the battery pack from the controller and adjusts the voltage, current, and power of the external power supply 402.
The controller 441 also receives the charging control signal from the first communication module 442 and outputs a control signal to the bidirectional power supply controller 443; the bidirectional power supply controller 443 receives the control signal from the controller 441 to output a power supply control signal to the voltage conversion circuit to control the current direction of the voltage conversion circuit 444 and control the voltage conversion circuit 444 to adjust the power of the external power supply device 401 to form a power output adapted to the battery pack, so that the external power supply device 401 charges the battery pack. In some embodiments, the bi-directional power controller 443 receives the control signal from the controller 441 and outputs the reference voltage to the voltage conversion circuit 444, so as to control the current direction of the voltage conversion circuit 444. For example, when the external power supply device 402 is connected to the first dc interface 42, the pin CS of the bidirectional power supply controller outputs a positive voltage to the voltage conversion circuit, so that the external power supply device 402 charges the battery pack. When the external power device 401 is connected to the first dc interface, the CS pin of the bidirectional power supply controller outputs a negative voltage to the voltage conversion circuit, so that the battery pack charges the external power device 401.
And a voltage conversion circuit 444 for adapting the voltage of the first dc interface 42 to the battery pack voltage.
In some embodiments, the test terminal 423 of the first dc interface 42 includes pins CC1 and CC2, and pins CC1 and CC2 are control pins that generate the same communication signal. The positive terminal 421 is a VBUS pin, which is a power supply pin, and the negative terminal 422 is a GND pin, which is a ground pin. The pins CC1 and CC2 are used for judging whether the equipment connected to the first direct current interface is an external power supply device or an external power utilization device, and the change of the states of the pins CC1 and CC2 is detected by the first communication module. When the pin CC1 is in the idle state and the pin CC2 is in the idle state, no device is connected. When the external power supply device 402 is connected to the first interface 42, the CC1 and the CC2 pins detect a high level, the external power supply device 402 is equivalent to a pull-up resistor, it is determined that the first interface 42 is a power supply side, the battery pack is equivalent to a pull-down resistor, it is determined that the battery pack is a power receiving side, the controller 441 obtains current charging information of the battery pack, the current charging information is transmitted to the first communication module 442 through the SDA pin and the SCL pin of the controller 441, the first communication module 442 adjusts the voltage, the current and the power of the external power supply device, and the external power supply device charges the battery pack by matching the voltage of the battery pack through the voltage conversion module 444. The standard voltage range of the first dc interface 42 is 5V to 20V, and a voltage of 5V to 20V can be continuously adjusted and any maximum source output power of 10W to 100W can be supported.
When the external electric device 401 is connected to the first dc interface 42, the CC1 and the CC2 pins detect a low level, the external electric device 401 corresponds to a pull-down resistor, the first dc interface 42 is determined as a power receiving side, the battery pack corresponds to a pull-up resistor and is determined as a power supplying side, the first communication module 442 detects a change in the state of the CC1 and the CC2 pins, transmits a signal to the controller 441 through the SCL pin and the SDA pin, the controller 441 outputs a control signal to the bidirectional power supply controller 443, the bidirectional power supply controller receives the control signal to control the current direction of the voltage conversion circuit 444, and the voltage conversion circuit 444 matches the discharge voltage of the battery pack with the charge voltage required by the external electric device 401 to charge the external electric device 401.
In this way, an adapter as shown in fig. 1 is provided, which can discharge through the first direct current interface to charge the external device. For example, the adapter may be used to output power stored in a battery pack for charging an external device such as a smartphone or a laptop computer. The practical scene of the battery pack is expanded. The battery pack can also be charged through the first direct current interface, so that the use by a user is facilitated. Meanwhile, the adapter uses a bidirectional power supply controller, and the charging and discharging control is realized through the same controller, so that the introduction of other operational amplifier circuits is reduced, the circuit structure is simplified, and the adapter can realize the charging and discharging with the high power of more than 10W.
In some embodiments, the controller 441, the first communication module 442, and the bidirectional power supply controller 443 may be integrated into one System On Chip (SOC).
An adapter 50 is shown in fig. 7 as one embodiment. In contrast to the embodiment shown in fig. 6, the adapter 50 comprises a first dc interface 52 and a second dc interface 53. The adapter 50 further comprises: a discharge circuit 55 and a charge circuit 56.
The first dc interface 52 is an interface capable of realizing charging and discharging with a large power greater than 10W, and is the same as the first dc interface 42 of the adapter 40 in the embodiment shown in fig. 6.
The second dc interface 53 is used to connect the external power consumption device 501 to supply electric power to the external power consumption device 501. The second dc interface 53 is an interface supplying power to an external device, and has an operating power of 5V/2A.
The discharging circuit 55 is used for converting the electric energy output by the adapting interface 51 into a voltage output matched with the second interface 53; the discharge circuit 55 is disposed on the circuit board 54 in series between the adapter interface 51 and the second dc interface 53. The discharging circuit 55 includes a second communication module 551 and a second voltage converting circuit 552.
The charging circuit 56 is configured to convert the power of the external power supply device 502 connected to the first interface 52 to charge the battery pack through the external power supply device 502, and the charging circuit 56 is connected in series between the adapter interface 51 and the first dc interface 52.
In some embodiments, a second detection terminal 58 is disposed within the second dc interface 53. The second detection terminal 58 is used to detect the interface state of the second dc interface 53. The interface states of the second dc interface 53 include a vacant state and a discharge state. When the external power consumption device is connected to the second dc interface, the second detection terminal 58 detects the discharge state and transmits a communication signal to the second communication module 551.
The second communication module 551 receives a communication signal of the state information from the second dc interface 53, and transfers the communication signal to the second voltage conversion circuit 552.
The second voltage conversion circuit 552 receives the status signal from the second dc interface of the second communication module 551, and converts the battery pack voltage into a voltage suitable for the external power consumption device 501.
The first charging circuit 56 includes a first communication module 561, a controller 562, a bidirectional power supply controller 563, and a first voltage conversion circuit 564.
The first voltage conversion circuit 56 is connected in series between the first dc interface 52 and the adapter interface 51, and is used for converting the power of the external power supply device 502 into the power output of the adapter battery pack. The first voltage conversion circuit 564 converts the voltage of the first dc interface 52 to be adapted to the battery pack voltage.
When the first dc interface 52 is connected to the external power supply device 502, the detection terminal 57 detects a high level, determines that the first dc interface is in a charging state, and sends a charging control signal to the first communication module 561.
The first communication module 561 receives the charging control signal from the detection terminal 57 and transfers the charging control signal to the main controller 562. The main controller 562 is configured to be able to receive a communication signal regarding the battery pack-related information from the battery pack and transfer the communication signal of the battery pack information to the first communication module 561. The first communication module 561 receives a communication signal of information about the battery pack from the main controller 562 and adjusts the voltage, current, and power of the external power supply device 502.
The main controller 562 is further configured to receive the charging control signal from the first communication module 561 and output a control signal to the bidirectional power supply controller 563; the bidirectional power supply controller 563 is capable of outputting a power supply control signal to the first voltage conversion circuit 564 according to a control signal from the main controller 562 to control a current direction of the first voltage conversion circuit 564 and control the voltage conversion circuit 564 to adjust the power of the external power supply device 502 to adapt to the power output of the battery pack so that the external power supply device 502 charges the battery pack. In some embodiments, the bidirectional power supply controller 563 receives a control signal from the main controller 562, and outputs a reference voltage to the first voltage converting circuit 564 to control the current direction of the first voltage converting circuit 564. For example, when the external power supply device 502 is connected to the first interface 52, the CS pin of the bidirectional power supply controller 563 outputs a positive voltage to the voltage conversion circuit, so that the external power supply device 502 charges the battery pack.
In some embodiments, a first detection terminal 57 is disposed in the first dc interface 52 for detecting a signal state of the first dc interface 52, and a second detection terminal 58 is disposed in the second dc interface 53 for detecting an interface state of the second dc interface. When the external power consumption device 501 is inserted into the second dc interface 53 and the external power supply device 502 is inserted into the first dc interface 52, the second detection terminal 58 detects that the power consumption device is inserted, the first detection terminal 523 detects a high level, and it is determined that the first dc interface 52 is in the charging state, and the first dc interface 52 is determined as the power supply side. The controller 562 obtains the current charging information of the battery pack and transmits the current charging information to the first communication module 561 through the SDA pin and the SCL pin of the controller 562, the first communication module 561 adjusts the voltage, the current and the power of the external power supply device 502, and the external power supply device 502 matches the voltage of the battery pack and/or the external electric device 501 through the first voltage conversion circuit 564 to charge the battery pack and/or the external electric device 501. For example, the external power supply provides 40W of charging power to the battery pack at 20V/3A, while providing 20W of charging power to the first consumer device.
In this way, when the first dc interface is connected to the external power supply device, and the second dc interface is connected to the external power consumption device, the external power supply device charges the battery pack through the first dc interface, and meanwhile, the external power supply device also charges the external power consumption device through the second dc interface. Thus, the external power consumption device and the battery pack can be charged at the same time through the adapter. The charging circuit and the discharging circuit are divided into 2 sets of circuits, interference between the circuits can be reduced, and each interface can work independently.
As shown in the adaptor 60 of fig. 8, in some embodiments, when the first electrical device 601 is plugged into the second dc interface 63 and the first dc interface 62 is also plugged into the second electrical device 602, the first detection terminal 67 determines that the first dc interface 62 is in a discharging state, the main controller 662 obtains the current charging information of the first dc interface 62 through the first communication module 661, the battery pack matches the voltages of the first electrical device 601 and the second electrical device 602 through the second voltage converting circuit 652 and the first voltage converting circuit 664, and the battery pack outputs power to the first electrical device 601 and the second electrical device 602 at the same time.
Specifically, when the second electrical device is plugged into the first interface 62 and the detection terminal 67 detects a low level to determine that the first dc interface 62 is in a discharging state, the discharging control signal is sent to the first communication module 661.
The first communicating module 661 is configured to receive the discharge control signal from the detecting terminal 67 and transmit the discharge control signal to the main controller 662; the first communication module 661 is further configured to receive a communication signal of the charging information from the external electric device 602 and transmit the communication signal of the charging information to the main controller 662.
The main controller 662 is configured to receive a discharge control signal and a communication signal of the charging information and output a control signal to the bidirectional power supply controller 663;
the bidirectional power supply controller 663 is configured to output a power supply control signal to the first voltage converting circuit 664 according to a control signal received from the main controller 662 to control the current direction of the first voltage converting circuit 664 and control the first voltage converting circuit 664 to adjust the voltage value so that the battery pack charges the external power consumption device 602.
As one of the possible embodiments, the controller 662, the first communication module 661, the bidirectional power supply controller 663 may be integrated into one System On Chip (SOC); the main controller 662 and the bidirectional power supply controller 663 may also be integrated into one control module.
In this way, when the first direct current interface is connected to the external power consumption device and the second direct current interface is connected to the external power consumption device, the battery pack can simultaneously charge different external power consumption devices through the adapter, the use scene of the battery pack is expanded, and the battery pack is convenient for users to use. Meanwhile, the discharge circuits of the two interfaces are divided into 2 sets of circuits, interference between the circuits can be reduced, and each interface can work independently.
As shown in fig. 9, the difference from fig. 7 is that the adapter 70 is configured with a first dc interface 72, a second dc interface 73, and a third dc interface 74 in the embodiment shown in fig. 9. The third dc interface 74 is the same type of interface as the first dc interface 72.
The adapter further comprises: a first discharge circuit 76, a first charge circuit 77 and a second charge circuit 78.
The first dc interface 72 and the third dc interface 74 are interfaces that can realize high power (greater than 10W) charging and discharging.
The second dc interface 73 is used to connect the first external electric device 701 so as to supply the electric power of the battery pack to the first external electric device 701. The second dc interface 73 is an interface for supplying power to an external device, and has an operating power of 5V/2A.
A first discharging circuit 76 for converting the power of the battery pack or the external power supply device into a power output matched with the second dc interface 73. In some embodiments, a first discharge circuit 76 is disposed on the circuit board 75 in series between the adapter interface 71 and the second dc interface 73.
The first charging circuit 77 is connected in series between the adapter interface 71 and the first dc interface 72, and is configured to convert power of the first external power supply 702 accessed by the first dc interface 72 to charge the battery pack and the first external power consumption device 701 through the first external power supply 702.
The second charging circuit 78 is configured to convert the power of the second external power supply 703 connected to the third dc interface 74 to charge the battery pack and the first external power consumption device 701 through the external power supply 703, and the second charging circuit is connected in series between the adaptor interface 71 and the third dc interface 73.
The first discharge circuit 76 includes a second communication module 761 and a second voltage conversion circuit 762. The second communication module 761 is connected to a second voltage conversion circuit 762, the second voltage conversion circuit 762 is connected to the adapter interface 71, and the second voltage conversion circuit 762 converts the voltage inputted to the second voltage conversion circuit into a voltage matching the first external electric device 701 to charge the first external electric device.
The first charging circuit 77 includes a first communication module 771, a main controller 772, a first bidirectional power controller 773, and a first voltage converting circuit 774.
When the first dc interface 72 is connected to the first external power supply device 702, the detection terminal 721 detects the high level, determines that the first dc interface 72 is in the charging state, and sends the charging control signal to the first communication module 771. The first communication module 7712 receives the charge control signal from the detection terminal 721 and outputs the charge control signal to the main controller 772. The main controller 772 is provided to be able to receive a communication signal regarding the battery pack information from the battery pack and transfer the communication signal of the battery pack information to the first communication module 771. The first communication module 771 receives a communication signal of information about the battery pack from the main controller 772 and adjusts the voltage, current and power of the first external power supply 702.
The main controller 772 is further configured to receive the charging control signal from the first communication module 771 and output a control signal to the bi-directional power supply controller 773; the first bidirectional power supply controller 773 is configured to output a power supply control signal to the first voltage conversion circuit 774 according to a control signal from the main controller 772 to control a current direction of the first voltage conversion circuit 774 and control the first voltage conversion circuit 774 to adjust an electric energy of the first external power supply device 702 to adapt to an electric energy output of the battery pack so that the external power supply device 702 charges the battery pack. In some embodiments, the bidirectional power supply controller 773 receives a control signal from the main controller 772, and outputs a reference voltage to the first voltage converting circuit 774 to control the current direction of the first voltage converting circuit 774. For example, when the external power supply device 702 is connected to the first dc interface 72, the pin CS of the bidirectional power supply controller outputs a positive voltage to the voltage conversion circuit, so that the external power supply device 702 charges the battery pack. When the external power device is connected to the first dc interface 42, the CS pin of the bidirectional power supply controller outputs a negative voltage to the voltage conversion circuit, so that the battery pack charges the external power device.
The second charging circuit 78 includes a third communication module 781, a second bidirectional power supply controller 782, and a third voltage conversion circuit 783. The second charging circuit and the first charging circuit share the main controller 772, so that the controller 772 controls the third voltage conversion circuit 783 to adjust the electric energy of the second external power supply device 703 to adapt to the electric energy output of the battery pack, and the second external power supply device 703 charges the battery pack.
In this way, a plurality of external power supply devices can charge the battery pack at the same time, and the charging efficiency is higher and the charging speed is higher. It is particularly suitable for nominal voltage ranges of: 40V-120V battery pack.
In some embodiments, the second dc interface 73 or the third dc interface 74 or the second dc interface 73 and the third dc interface 74 may be plugged into an external power device, and the battery pack may charge the connected power device.
As shown in fig. 10, an adapter 80 as one of the embodiments is different from that shown in fig. 9 in that the third dc interface 84 of the adapter 80 in the embodiment shown in fig. 10 shares the bidirectional power supply controller 873 and the first voltage conversion circuit 874 with the first dc interface 82. And the positive terminal 821 of the first dc interface 82 and the positive terminal 841 of the third dc interface are connected in series to the first voltage conversion circuit 874, and the negative terminal 822 of the first dc interface 82 and the negative terminal 842 of the third dc interface are connected in series to the second voltage conversion circuit 874. The first communication module 871 is connected to the main controller 872, and the controller 872 acquires the current signal state of the first dc interface 82 through the first communication module 871. The third communication module 881 is also connected to the controller 872, the third communication module 881 obtains the signal status of the third dc interface 84, transmits the signal to the controller 872, the controller 872 obtains the charging information of the current battery pack, and transmits the control signal to the bidirectional power supply controller 873, and the first voltage conversion circuit 874 is controlled to convert the voltages of the first dc interface and the third dc interface to match the voltage of the battery pack and/or the voltage of the first external power device, so that the first external power device 801 and the second external power device 802 can supply power to the battery pack and/or the first external power device 801.
In some embodiments, the first dc interface 82 and the third dc interface 84 can also be connected to an external power device, and the battery pack supplies power to the first dc interface 82, the second dc interface 83 and the third dc interface 84 at the same time. It should be noted that the first dc interface 82 and the third dc interface 84 can only operate in the charging or discharging mode simultaneously.
As shown in fig. 11, an adapter 90 as one of the embodiments is different from the embodiment shown in fig. 9 in that a positive terminal 931 of a second dc interface 93 and a positive terminal 921 of a first dc interface 92 are connected in series to a first voltage conversion circuit 974, and a negative terminal 932 of the second dc interface 93 and a negative terminal 922 of the first dc interface 92 are connected in series to the first voltage conversion circuit 974. Therefore, when the first dc interface 92 operates in the discharging mode, the operating power of the first dc interface 92 and the operating power of the second dc interface 93 are the same as 5V/2A. When the first dc interface 92 operates in the charging mode, the second dc interface 93 cannot operate. Since the third dc interface 94 has an independent control circuit, the third dc interface 94 can operate independently, and can be connected to an external power supply device for charging or an external power consumption device for discharging.
As shown in fig. 12, an adapter 90' as one of the embodiments is different from the embodiment shown in fig. 11 in that a bidirectional power supply controller 973' and a first voltage conversion circuit 974' are shared by a third dc interface 94' and a first dc interface 92 '. The positive terminals of the first, second and third dc interfaces 92', 93' and 94 'are connected in series and connected to the first voltage conversion circuit 974', and the negative terminals of the first, second and third dc interfaces 92', 93' and 94 'are also connected in series and connected to the first voltage conversion circuit 974'. Therefore, the first dc interface 92', the second dc interface 93' and the third dc interface 94' can be operated in the discharging mode at the same time, and the operation power is 5V/2A. When the first dc interface 92' and the third dc interface 94' operate in the charging mode, the first dc interface 92' cannot operate.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by using equivalent alternatives or equivalent variations fall within the scope of the present invention.
Claims (10)
1. An adapter, comprising:
the adaptive interface is used for connecting a battery pack which can be detachably connected with the electric tool;
the first direct current interface can be electrically connected with an external power supply device, and the input power of the direct current interface is more than 10W; the input voltage range of the first direct current interface is 5-20V;
the first voltage conversion circuit is connected between the first direct current interface and the adapting interface in series and is used for converting the electric energy of the external power supply device into the electric energy which is adapted to the battery pack and outputting the electric energy;
the control module is connected between the first direct current interface and the adaptive interface and is connected with the first voltage conversion circuit, and the control module can control the current direction and the output voltage of the voltage conversion circuit according to the signal states of the first direct current interface and the adaptive interface;
when the first direct current interface is connected to an external power supply device and the second direct current interface is connected to an external power utilization device, the external power supply device can charge the battery pack through the first direct current interface, and the external power supply device can charge the external power utilization device through the second direct current interface.
2. The adapter of claim 1,
the battery pack includes: a guide slot for slidable connection with the second adapter;
the adaptation interface comprises:
the electric connecting terminal is electrically connected with the battery pack terminal;
a guide rail for cooperating with the guide groove to slidably couple the battery pack to the adapter.
3. The adapter of claim 1,
the nominal voltage range of the battery pack is as follows: 10V to 120V.
4. The adapter of claim 1,
the first direct current interface has at least two signal states of a charging state and a discharging state.
5. The adapter according to claim 1 or 4,
the first dc interface includes: the detection terminal is used for detecting the signal state of the first direct current interface;
when the first direct current interface is connected to the external power supply device, the detection terminal sends a charging control signal to the control module when detecting that the first direct current interface is in a charging state, so that the control module controls the current direction of the voltage conversion circuit to enable the external power supply device to charge the battery pack;
when the first direct current interface is connected to an external electric device, the detection terminal sends a discharge control signal to the control module when detecting that the first direct current interface is in a discharge state, so that the control module controls the current direction of the voltage conversion circuit and the battery pack discharges the external electric device.
6. The adapter of claim 5,
the adapter further comprises a communication module, wherein the communication module is set to be capable of receiving the charging control signal from the detection terminal and transmitting the charging control signal to the control module;
the control module comprises a main controller, and the main controller can receive a communication signal related to battery pack information from the battery pack and transmit the communication signal related to the battery pack information to the communication module;
the communication module is configured to receive a communication signal of information related to the battery pack and adjust a voltage, a current, and a power of the external power supply device to charge the battery pack.
7. The adapter of claim 6,
the control module further comprises:
a bidirectional power supply controller;
the main controller is also arranged to be capable of receiving the charging control signal and outputting a control signal to the bidirectional power supply controller;
the bidirectional power supply controller can output a power supply control signal to the voltage conversion circuit according to a control signal from the controller so as to control the current direction of the voltage conversion circuit and control the voltage conversion circuit to adjust the voltage value, so that the external power supply device charges the battery pack.
8. The adapter of claim 5,
and when the detection terminal detects a high level, judging that the first direct current interface is in a charging state.
9. The adapter of claim 5,
and when the detection terminal detects a low level, judging that the first direct current interface is in a discharging state.
10. The adapter of claim 1,
the adapter further comprises:
and the second voltage conversion circuit is connected between the second direct current interface and the adaptation interface in series and is used for converting the electric energy of the battery pack or the external power supply device into the electric energy adapted to the external power utilization device and outputting the electric energy.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2019105180431 | 2019-06-14 | ||
| CN201910518043 | 2019-06-14 |
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| CN112087016A true CN112087016A (en) | 2020-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921846186.7U Active CN211405512U (en) | 2019-06-14 | 2019-10-30 | Adapter |
| CN201921847415.7U Active CN211405513U (en) | 2019-06-14 | 2019-10-30 | Electric energy system |
| CN201911047542.3A Active CN112087015B (en) | 2019-06-14 | 2019-10-30 | Combination of battery pack and adapter |
| CN201911047624.8A Pending CN112087016A (en) | 2019-06-14 | 2019-10-30 | Adapter |
| CN201911045908.3A Active CN112087014B (en) | 2019-06-14 | 2019-10-30 | Combination of battery pack and adapter |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921846186.7U Active CN211405512U (en) | 2019-06-14 | 2019-10-30 | Adapter |
| CN201921847415.7U Active CN211405513U (en) | 2019-06-14 | 2019-10-30 | Electric energy system |
| CN201911047542.3A Active CN112087015B (en) | 2019-06-14 | 2019-10-30 | Combination of battery pack and adapter |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911045908.3A Active CN112087014B (en) | 2019-06-14 | 2019-10-30 | Combination of battery pack and adapter |
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| CN (5) | CN211405512U (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114649858A (en) * | 2020-12-18 | 2022-06-21 | 南京泉峰科技有限公司 | Charging system and charger |
| CN114649838A (en) * | 2020-12-18 | 2022-06-21 | 南京泉峰科技有限公司 | Charging system and electric tool system |
| CN115528757A (en) * | 2021-06-24 | 2022-12-27 | 南京泉峰科技有限公司 | Electric tool |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20040145348A1 (en) * | 2000-09-21 | 2004-07-29 | Constantin Bucur | Power management topologies |
| US7545120B2 (en) * | 2003-07-29 | 2009-06-09 | Dell Products L.P. | AC-DC adapter and battery charger integration for portable information handling systems |
| CN200983511Y (en) * | 2006-09-18 | 2007-11-28 | 曾灿辉 | A portable AC power device |
| JP5461221B2 (en) * | 2010-02-12 | 2014-04-02 | 株式会社マキタ | Electric tool powered by multiple battery packs |
| CN105529802B (en) * | 2014-09-29 | 2019-01-04 | 南京德朔实业有限公司 | A kind of charging system |
| CN204597589U (en) * | 2015-04-16 | 2015-08-26 | 安克科技有限公司 | Charger and AC-DC thereof change module and DC-to-DC conversion module |
| CN106253286A (en) * | 2015-06-11 | 2016-12-21 | 苏州宝时得电动工具有限公司 | Power transfer and control method, electric power system |
| CN205123370U (en) * | 2015-11-06 | 2016-03-30 | 联想(北京)有限公司 | Adapter of quick charge |
| WO2017167210A1 (en) * | 2016-03-30 | 2017-10-05 | 南京德朔实业有限公司 | Charging system for automobile battery, conversion device, and charging method |
| CN107394833A (en) * | 2016-05-16 | 2017-11-24 | 南京德朔实业有限公司 | Adapter, supply unit and the guard method put excessively |
| CN108233441B (en) * | 2016-12-14 | 2020-01-10 | 常州格力博有限公司 | Power adapter and tool driven by alternating current and direct current power supply |
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2019
- 2019-10-30 CN CN201921846186.7U patent/CN211405512U/en active Active
- 2019-10-30 CN CN201921847415.7U patent/CN211405513U/en active Active
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- 2019-10-30 CN CN201911047624.8A patent/CN112087016A/en active Pending
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| CN112087015B (en) | 2023-04-14 |
| CN112087014B (en) | 2023-09-12 |
| CN211405513U (en) | 2020-09-01 |
| CN112087014A (en) | 2020-12-15 |
| CN211405512U (en) | 2020-09-01 |
| CN112087015A (en) | 2020-12-15 |
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