A charger, a battery pack, a charging combination and a charging method

Abstract

The application provides a charger, a battery pack, a charging combination and a charging method. The battery pack provides the required activation voltage for the charger, and simultaneously obtains the charging power through the charger, and detects the charging parameters of the battery pack charging loop in real time. When the charging parameters are abnormal or the charging is completed, the activation voltage is disconnected, so that the output of the charger is stopped, and damage to the battery pack caused by continued charging in the case of battery pack failure or charging completion is avoided, the charging safety of the battery pack is ensured, and the service life of the battery pack is improved. In addition, the battery pack and the charger interact data in real time during the charging process, and the output power of the charger is adjusted in real time according to the charging parameters of the battery pack, so that accidents such as wire short circuit and even product overheating and explosion are avoided.

Description

Technical Field

[0001] This invention relates to the field of battery technology, and in particular to a charger, battery pack, charging assembly, and charging method. Background Technology

[0002] Garden tools are maintenance equipment for human landscaping. They are mechanized tools used to maintain lawns, hedges, and protect flowers, grasses, and trees, replacing most manual labor.

[0003] Garden tools typically use chargers to charge their battery packs. However, current charging interfaces and functions are relatively limited. Once the charger is connected to an external power source, it begins charging the battery pack. During the charging process, regardless of whether there is a fault in the charging circuit within the battery pack or whether charging is complete, it continues to output charging power to the battery pack, which can easily lead to damage to the battery pack. Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide a charger, battery pack, charging assembly, and charging method to solve the problem that the charging interface and functions in the prior art are relatively simple, which easily leads to damage to the battery pack.

[0005] To achieve the above and other related objectives, a first aspect of the present invention provides a charger, comprising:

[0006] The first Type-C interface is used to receive the activation voltage;

[0007] An on / off control module is used to control the charging of the charger according to the activation voltage;

[0008] The insert is electrically connected to the battery pack and the on / off control module, and is used to output charging voltage to the battery pack.

[0009] In one embodiment of the present invention, the on / off control module includes:

[0010] A first converter is used to step down the activation voltage and output it to a first processor;

[0011] The first processor is used to output a control signal to the second converter after receiving the bucked activation voltage;

[0012] An AC / DC converter is used to convert external alternating current (AC) into direct current (DC).

[0013] The second converter is used to step down the DC power and output it to the plug-in according to the control signal of the first processor.

[0014] In one embodiment of the present invention, it further includes:

[0015] A charging protection unit is connected in series between the second converter and the plug, and its control terminal is connected to the first processor to protect the charging circuit of the charger.

[0016] In one embodiment of the present invention, the first Type-C interface is also used for data interaction with the battery pack.

[0017] In one embodiment of the present invention, it further includes:

[0018] A first communication unit is connected in series between the first processor and the first Type-C interface to realize the communication connection between the first processor and the battery pack;

[0019] The first processor is also configured to output a control signal to the second converter based on the received data from the battery pack.

[0020] A second aspect of the present invention provides a battery pack comprising:

[0021] The second Type-C interface is used to output activation voltage to the charger;

[0022] The voltage generation module is used to generate an activation voltage to the second Type-C interface; it is also used to obtain the charging status according to the charging parameters, and to stop the generation of the activation voltage when the charging status is abnormal or complete.

[0023] A power supply terminal, electrically connected to the charger, is used to charge the battery pack;

[0024] The detection module is used to acquire the charging parameters of the battery pack in real time.

[0025] In one embodiment of the present invention, the detection module includes:

[0026] A voltage detection unit is used to obtain the voltage value of the battery pack cell assembly;

[0027] The current detection unit is used to obtain the loop current of the battery pack charging circuit;

[0028] A temperature detection unit is used to acquire the temperature of the power devices in the battery cell assembly and / or charging circuit.

[0029] In one embodiment of the present invention, the voltage generation module includes:

[0030] The second processor, electrically connected to the detection module, is used to output a control signal to the third converter according to the charging parameters.

[0031] The third converter has its input terminals connected to the power supply terminal and the battery cell assembly, its output terminal connected to the second Type-C interface, and its control terminal connected to the second processor. It is used to convert the input voltage of the charger or the battery cell assembly voltage into an activation voltage according to the control signal of the second processor and output it to the second Type-C interface.

[0032] In one embodiment of the present invention, the battery pack further includes:

[0033] An activation unit is used to activate the second processor according to an activation signal, the activation signal being obtained through the connection status of the second Type-C interface of the battery pack and / or by pressing the activation button.

[0034] In one embodiment of the present invention, the second Type-C interface is also used for data interaction with the charger.

[0035] In one embodiment of the present invention, the battery pack further includes:

[0036] A Type-C communication unit is connected in series between the second processor and the second Type-C interface to enable communication between the second processor and the charger.

[0037] A third aspect of the present invention provides a charging assembly comprising: a detachably connected charger and a battery pack;

[0038] The charger includes:

[0039] The first Type-C interface is used to receive the activation voltage;

[0040] An on / off control module is used to control the charging of the charger according to the activation voltage;

[0041] The insert is electrically connected to the battery pack and the on / off control module, and is used to output charging voltage to the battery pack.

[0042] The battery pack includes:

[0043] The second Type-C interface is used to output activation voltage to the charger;

[0044] The voltage generation module is used to generate an activation voltage to the second Type-C interface; it is also used to obtain the charging status according to the charging parameters, and to stop the generation of the activation voltage when the charging status is abnormal or complete.

[0045] A power supply terminal, electrically connected to the charger, is used to charge the battery pack;

[0046] The detection module is used to acquire the charging parameters of the battery pack in real time;

[0047] The first Type-C interface is compatible with the second Type-C interface, and the plug is compatible with the power supply terminal.

[0048] A fourth aspect of the present invention provides a charging method, the charging method comprising:

[0049] The battery pack outputs an activation voltage to the charger, which then charges the battery pack after being powered on.

[0050] During the charging process, the battery pack monitors the charging parameters of the battery pack in real time, obtains the charging status based on the charging parameters, and stops outputting the activation voltage when the charging status is abnormal or completed.

[0051] In one embodiment of the present invention, the step before the battery pack outputs an activation voltage to the charger includes:

[0052] Upon receiving an activation signal, the battery pack is activated. The activation signal is obtained through the connection status of the second Type-C interface of the battery pack and / or by pressing the activation button.

[0053] In one embodiment of the present invention, the step before the battery pack outputs the activation voltage to the charger further includes:

[0054] After activating the battery pack, the charging parameters of the battery pack are detected, and the charging status is obtained based on the charging parameters. If the charging status is normal, the activation voltage is output.

[0055] In one embodiment of the present invention, the steps before charging the battery pack after the charger is powered on further include:

[0056] The charger communicates and hands-on with the battery pack; if the handshake is successful, charging begins.

[0057] As described above, the charger, battery pack, charging assembly, and charging method of the present invention have the following beneficial effects:

[0058] The battery pack of the present invention provides the required activation voltage to the charger and, while obtaining charging power through the charger, monitors the charging parameters of the battery pack charging circuit in real time. When the charging parameters are abnormal or charging is complete, the activation voltage is disconnected, thereby stopping the output of the charger. This avoids damage to the battery pack caused by continued charging when the battery pack malfunctions or charging is complete, ensuring the charging safety of the battery pack and improving its service life. Attached Figure Description

[0059] Figure 1 The diagram shown is a structural block diagram of a charger disclosed in an embodiment of the present invention.

[0060] Figure 2 This is shown as another structural block diagram of the charger disclosed in an embodiment of the present invention.

[0061] Figure 3 The diagram shown is a structural block diagram of a battery pack disclosed in an embodiment of the present invention.

[0062] Figure 4 The diagram shown is a structural block diagram of the detection module disclosed in an embodiment of the present invention.

[0063] Figure 5 This is shown as another structural block diagram of the battery pack disclosed in an embodiment of the present invention.

[0064] Figure 6 The diagram shown is a structural block diagram of the charging assembly disclosed in an embodiment of the present invention.

[0065] Figure 7 The diagram shows the workflow of the charging method disclosed in this embodiment of the invention.

[0066] Figure 8 The diagram shown is a structural schematic of the charging assembly disclosed in an embodiment of the present invention.

[0067] Component designation explanation:

[0068] 100 - Battery pack; 110 - Activation unit; 120 - Cell assembly; 122 - Second Type-C interface;

[0069] 130 - Voltage generation module; 1301 - Third converter; 1302 - Second processor; 132 - Power supply terminal;

[0070] 170 - Detection module; 192 - Type-C communication unit;

[0071] 200 - Charger; 22 - First Type-C interface; 23 - Insert; 201 - First communication unit;

[0072] 202 - Charging protection unit; 210 - On / off control module; 2101 - First converter;

[0073] 2102 - First processor; 2103 - Second converter; 2104 - AC / DC converter. Detailed Implementation

[0074] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0075] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the figures only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0076] Please see Figure 1 An embodiment of the present invention provides a charger 200, which charges a battery pack 100 after receiving an activation voltage. During the charging process, the charger 200 turns its output on or off according to the on / off state of the externally input activation voltage. The charger 200 specifically includes: a first Type-C interface 22, a plug 23, and an on / off control module 210.

[0077] The first Type-C interface 22 is used to receive the activation voltage;

[0078] The on / off control module 210 is used to control the charging of the charger 200 according to the activation voltage;

[0079] Insert 23 is electrically connected to battery pack 100 and on / off control module 210, and is used to output charging voltage to battery pack 100.

[0080] It should be understood that in this embodiment, there is only one first Type-C interface 22 and one plug 23. In actual applications, the number of Type-C interfaces can be set to multiple as needed. By adjusting the charging power, the charging speed can be accelerated, making it more convenient for users.

[0081] The first Type-C interface 22 is a standard USB interface. It is a reversible type that can be plugged in either direction and supports the USB Power Delivery Specification (PD) fast charging protocol, enabling power transfer and data exchange. In this embodiment, the Type-C interface pins include VBUS, CC, D+, D-, and GND.

[0082] In addition, the communication protocol of the first Type-C interface is not limited to the aforementioned standardized USB PD fast charging protocol, but also supports proprietary protocols. Proprietary protocols are generally designed by each manufacturer according to their own circumstances, and this solution does not impose any restrictions on them.

[0083] Insert 23 is a commonly used connection port in garden tools, and there are various models to choose from. In this embodiment, it includes a positive terminal P+ and a negative terminal P-.

[0084] Please see Figure 2 The on / off control module 210 includes: a first converter 2101, a first processor 2102, a second converter 2103, and an AC / DC converter 2104.

[0085] The first converter 2101 is connected in series between the first Type-C interface 22 and the first processor 2102. It is used to step down the activation voltage and output it to the first processor 2102. After the activation voltage is stepped down, it should be adapted to the operating voltage range of the first processor 2102.

[0086] The first processor 2102 is used to output a control signal to the second converter 2103 after receiving the bucked activation voltage, so that the converter starts working; wherein the control signal is a PWM signal.

[0087] AC-DC converter 2104 is used to convert external AC power into DC power;

[0088] The second converter 2103 is used to step down the DC power and output it to the plug-in 23 according to the control signal of the first processor 2102.

[0089] Please see Figure 2 The charger 200 also includes a first communication unit 201.

[0090] The first communication unit 201 is connected in series between the first processor 2102 and the first Type-C interface 22 to realize the communication connection between the first processor 2102 and the battery pack 100. The first processor 2102 dynamically adjusts the output power according to the data transmitted by the battery pack 100 to match the load capacity of the battery pack 100, thereby avoiding accidents such as short circuits or even overheating and explosion of the product.

[0091] Please see Figure 2 The charger 200 also includes a charging protection unit 202.

[0092] The charging protection unit 202 is connected in series between the second converter 2103 and the plug 23, and its control terminal is connected to the first processor 2102 to protect the charging circuit of the charger 200.

[0093] It should be understood that the charging circuit of the charger 200 is the internal circuit of the charger 200, including the plug 23, the first communication unit 201 and the on / off control module 210. Any abnormality in any part of it will affect the service life of the charger 200, and the charging process should be stopped immediately.

[0094] As can be seen, in this embodiment, the charger 200 starts charging the battery pack 100 after receiving an externally input activation voltage. During the charging process, it interacts with the battery pack 100 to adjust the output power of the charger 200 in real time according to the charging parameters of the battery pack 100. When the activation voltage is disconnected, the charger 200 stops its output in time, thus avoiding damage to the battery pack 100 caused by continued charging when the battery pack 100 malfunctions or is fully charged. This ensures the charging safety of the battery pack 100 and improves its service life.

[0095] Please see Figure 3 Another embodiment of the present invention provides a battery pack 100. It should be understood that the battery pack 100 has a cell assembly 120 comprising multiple cells, which can be combined in series and parallel to form the cell assembly 120. The cell assembly 120 is used to store electrical energy and can be charged by an external charger 200. The battery pack 100 specifically includes: a second Type-C interface 122, a power supply terminal 132, a voltage generation module 130, and a detection module 170.

[0096] The detection module 170 is used to acquire the charging parameters of the battery pack 100 in real time. The charging parameters of the battery pack 100 are the technical parameters of the battery pack charging circuit, including: the single-cell voltage of the cell assembly 120, the circuit current of the charging circuit, and the temperature of the cell assembly 120 and / or the power devices in the charging circuit.

[0097] Please see Figure 4 The detection module 170 includes a voltage detection unit, a current detection unit, and a temperature detection unit.

[0098] A voltage detection unit is used to acquire the voltage value of the battery cell assembly 120;

[0099] A current detection unit is used to obtain the loop current of the charging circuit of the battery pack 100;

[0100] A temperature detection unit is used to acquire the temperature of the battery cell assembly 120 and / or the power devices in the charging circuit.

[0101] It should be understood that the charging circuit of the battery pack 100 is the internal circuit of the battery pack 100, including the power supply terminal 132, the second Type-C interface 122, the detection module 170, the voltage generation module 130 and the cell assembly 120. Any abnormality in any part of it will affect the service life of the battery pack 100, and the charging process should be stopped immediately.

[0102] The voltage generation module 130 is used to generate an activation voltage to the second Type-C interface 122; it is also used to obtain the charging status according to the charging parameters, and to stop the generation of activation voltage when the charging status is abnormal or completed.

[0103] It should be understood that during the charging process, the range of charging parameters can be preset according to the usage needs, and the charging status can be determined according to the range of parameters. The charging status in this embodiment includes: normal, abnormal and completed. In actual applications, users can further subdivide the charging status as needed.

[0104] Specifically, when the charging status exceeds the parameter range, it is considered abnormal; when it is within the parameter range, it is considered normal; when the state of charge (SOC) of the battery cell assembly 120 reaches the preset value, such as 100%, the charging status is considered complete.

[0105] The second Type-C interface 122 is used to output the activation voltage of the charger 200.

[0106] The power supply terminal 132 is electrically connected to the charger 200 and is used to charge the battery pack 100.

[0107] It should be understood that in this embodiment, there is only one second Type-C interface 122 and one power supply terminal 132. In actual applications, the number of Type-C interfaces can be set to multiple as needed. By adjusting the charging power, the charging speed can be accelerated, making it more convenient for users.

[0108] The interface definitions of the second Type-C interface 122 and the power supply terminal 132 are the same as those of the first Type-C interface 22 and the plug 23 in the above embodiment, and will not be repeated here for the sake of brevity. In addition, the power supply terminal 132 is matched with the plug 23 in the above embodiment, and they are male and female connectors; the second Type-C interface 122 is matched with the first Type-C interface 22 in the above embodiment, and they are also male and female connectors.

[0109] Please see Figure 5 The voltage generation module 130 includes: a third converter 1301 and a second processor 1302.

[0110] The second processor 1302 is electrically connected to the detection module 170 and is used to output control signals to the third converter 1301 according to the charging parameters. When the charging status is normal and the charging is not completed, the output control signal starts the operation of the third converter 1301. When the charging status is abnormal or the charging is completed, the output control signal stops the operation of the third converter 1301.

[0111] The third converter 1301 is connected in series between the power supply terminal 132 and the second Type-C interface 122, and its control terminal is connected to the second processor 1302. It is used to convert the input voltage of the charger 200 into an activation voltage according to the control signal of the second processor 1302 and output it to the second Type-C interface 122.

[0112] It should be noted that the third converter 1301 in this embodiment, as well as the first converter 2101, the second converter 2103 and the AC-DC converter 2104 in the above embodiments, are all conventional voltage conversion devices in the prior art, and there are mature products available for selection. This application does not limit their models.

[0113] Please see Figure 5 The battery pack 100 also includes an activation unit 110.

[0114] The activation unit 110 is used to activate the second processor 1302 according to the activation signal, wherein the activation signal is obtained through the second Type-C interface 122 of the battery pack 100 and / or by pressing the activation button.

[0115] It should be understood that the battery pack 100 is equipped with an activation button for controlling the on / off state of the power circuit. When the activation button is pressed, it generates an activation signal that can be pulled up or down.

[0116] With this approach, the battery pack 100 is in a dormant state when there is no activation signal, and only starts working after receiving an activation signal, thus saving energy.

[0117] Please see Figure 5 The battery pack 100 also includes a Type-C communication unit 192.

[0118] The Type-C communication unit 192 is connected in series between the second processor 1302 and the second Type-C interface 122 to establish a communication connection between the second processor 1302 and the charger 200. When the charger 200 is connected to the second Type-C interface 122, an external pull-up signal is generated. This pull-up signal is transmitted to the second processor 1302 as an activation signal through the Type-C communication unit 192. In addition, the battery pack 100 can also transmit its charging parameters to the charger 200 through the Type-C communication unit 192, so that the charger 200 can dynamically adjust its output power to match the load capacity of the battery pack 100, thereby avoiding accidents such as short circuits or even overheating and explosion.

[0119] It should be noted that the first processor 2102 in the above embodiments and the second processor 1302 in this embodiment are typically the central processing unit (CPU) of the entire microcomputer digital display sensor processor system. They can be configured with corresponding operating systems and control interfaces, etc. Specifically, they can be microcontrollers, DSPs (Digital Signal Processing), ARMs (Advanced RISC Machines), or other digital logic processors capable of automated control. They can load control instructions into memory for storage and execution at any time. At the same time, they can have built-in CPU instruction and data memory, input / output units, power supply modules, digital analog units, etc. The specific configuration can be set according to the actual use situation, and this solution does not impose any restrictions on this.

[0120] As can be seen, in this embodiment, the battery pack 100 outputs an activation voltage to the charger 200 after activation, so that the charger 200 begins to charge the battery pack 100. While charging, the battery pack 100 monitors the charging status in real time. When the charging status is abnormal or completed, it stops outputting the activation voltage, thereby stopping the charging process. This avoids damage to the battery pack 100 caused by continuing to charge when the battery pack 100 malfunctions or charging is completed, ensuring the charging safety of the battery pack 100 and improving the service life of the battery pack 100.

[0121] Please see Figure 6 and Figure 8 Another embodiment of the present invention provides a charging assembly, including: a detachably connected charger 200 and a battery pack 100;

[0122] Charger 200 includes:

[0123] The first Type-C interface 22 is used to receive the activation voltage;

[0124] The on / off control module 210 is used to control the charging of the charger 200 according to the activation voltage;

[0125] The insert 23 is electrically connected to the battery pack 100 and the on / off control module 210, and is used to output the charging voltage to the battery pack 100.

[0126] Battery pack 100 includes:

[0127] The voltage generation module 130 is used to generate the activation voltage of the charger 200 to the second Type-C interface 122; it is also used to obtain the charging status according to the charging parameters, and stop the generation of the activation voltage when the charging status is abnormal or completed.

[0128] The second Type-C interface 122 is used to output the activation voltage;

[0129] The power supply terminal 132 is electrically connected to the charger 200 and is used to charge the battery pack 100.

[0130] The detection module 170 is used to acquire the charging parameters of the battery pack 100 in real time.

[0131] The first Type-C interface 22 is matched with the second Type-C interface 122, and the plug 23 is matched with the power supply terminal 132.

[0132] As can be seen, in this embodiment of the charging assembly, the battery pack 100 provides an activation voltage to the charger 200, enabling it to begin charging the battery pack 100. Simultaneously, the battery pack 100 monitors the charging status in real time. If the charging status is abnormal or complete, it stops outputting the activation voltage, thereby halting the charging process. This prevents damage to the battery pack 100 from continued charging if it malfunctions or has completed charging, ensuring charging safety and extending its lifespan. Furthermore, the battery pack 100 and charger 200 exchange data in real time during charging, adjusting the charger 200's output power according to the battery pack 100's charging parameters to match the battery pack 100's load capacity, preventing accidents such as short circuits or even overheating and explosions.

[0133] Please see Figure 7 Another embodiment of the present invention provides a charging method, which includes: a battery pack 100 outputting an activation voltage to a charger 200, and the charger 200 charging the battery pack 100 after being powered on; during the charging process, the battery pack 100 detects the charging parameters of the battery pack charging circuit in real time, obtains the charging status according to the charging parameters, and stops outputting the activation voltage when the charging status is abnormal or completed.

[0134] Optionally, the steps prior to the battery pack 100 outputting the activation voltage to the charger 200 include:

[0135] Upon receiving an activation signal, the battery pack 100 is activated; wherein the activation signal is obtained through the second Type-C interface 122 of the battery pack 100 and / or the activation button.

[0136] Optionally, the steps prior to the battery pack 100 outputting the activation voltage to the charger 200 also include:

[0137] After activating the battery pack 100, the charging parameters of the battery pack 100 are detected, and the charging status is obtained based on the charging parameters. If the charging status is normal, the activation voltage is output.

[0138] Optionally, after the charger 200 is powered on, the steps before charging the battery pack 100 may also include:

[0139] Battery pack 100 and charger 200 communicate and handshake; if the handshake is successful, charging begins.

[0140] As can be seen, the charging method of this embodiment, applied to the charging combination of the above embodiments, provides an activation voltage to the charger 200, enabling it to begin charging the battery pack 100. Simultaneously, the battery pack 100 monitors the charging status in real time. If the charging status is abnormal or complete, it stops outputting the activation voltage, thereby halting the charging process. This prevents damage to the battery pack 100 from continued charging if it malfunctions or charging is complete, ensuring charging safety and extending its lifespan. Furthermore, the battery pack 100 and charger 200 exchange data in real time during charging, adjusting the charger 200's output power based on the battery pack 100's charging parameters to prevent accidents such as short circuits or overheating and explosions.

[0141] In summary, the charger, battery pack, charging assembly, and charging method of the present invention provide a battery pack 100 that supplies the required activation voltage to the charger 200. While obtaining charging power through the charger 200, the battery pack 100 also monitors the charging parameters of the battery pack charging circuit in real time. When the charging parameters are abnormal or charging is complete, the activation voltage is disconnected, thereby stopping the output of the charger 200. This prevents damage to the battery pack 100 from continued charging if it malfunctions or charging is complete, ensuring the charging safety of the battery pack 100 and improving its service life. Furthermore, the battery pack 100 and charger 200 exchange data in real time during charging, adjusting the output power of the charger 200 according to the charging parameters of the battery pack 100, thus preventing accidents such as short circuits or even overheating and explosion.

[0142] Therefore, this invention effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0143] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A charger, characterized in that, include: The first Type-C interface is used to receive the activation voltage; An on / off control module is used to control the charging of the charger according to the activation voltage; The insert is electrically connected to the battery pack and the on / off control module, and is used to output charging voltage to the battery pack. The on / off control module includes: A first converter is used to step down the activation voltage so that the stepped-down activation voltage is adapted to the operating voltage range of the first processor and output to the first processor; A first processor is configured to output a control signal to a second converter after receiving a stepped-down activation voltage. The first processor is powered only by the activation voltage after being stepped down by the first converter. An AC / DC converter is used to convert external alternating current (AC) into direct current (DC). The second converter is used to step down the DC power and output it to the plug-in according to the control signal of the first processor.

2. The charger according to claim 1, characterized in that, Also includes: A charging protection unit is connected in series between the second converter and the plug, and its control terminal is connected to the first processor to protect the charging circuit of the charger.

3. The charger according to claim 1, characterized in that: The first Type-C interface is also used for data interaction with the battery pack.

4. The charger according to claim 3, characterized in that, Also includes: A first communication unit is connected in series between the first processor and the first Type-C interface to realize the communication connection between the first processor and the battery pack; The first processor is also configured to output a control signal to the second converter based on the received data from the battery pack.

5. A battery pack, characterized in that, include: A second Type-C interface is used to output activation voltage to the charger as described in claim 1; A voltage generation module is used to generate an activation voltage for the second Type-C interface; It is also used to obtain the charging status based on the charging parameters, and to stop the generation of the activation voltage when the charging status is abnormal or completed; A power supply terminal, electrically connected to the charger, is used to charge the battery pack; The detection module is used to acquire the charging parameters of the battery pack in real time.

6. The battery pack according to claim 5, characterized in that, The detection module includes: A voltage detection unit is used to obtain the voltage value of the battery pack cell assembly; The current detection unit is used to obtain the loop current of the battery pack charging circuit; A temperature detection unit is used to acquire the temperature of the power devices in the battery cell assembly and / or charging circuit.

7. The battery pack according to claim 5, characterized in that, The voltage generation module includes: The second processor, electrically connected to the detection module, is used to output a control signal to the third converter according to the charging parameters. The third converter has its input terminals connected to the power supply terminal and the battery cell assembly, its output terminal connected to the second Type-C interface, and its control terminal connected to the second processor. It is used to convert the input voltage of the charger or the battery cell assembly voltage into an activation voltage according to the control signal of the second processor and output it to the second Type-C interface.

8. The battery pack according to claim 5, characterized in that, The battery pack also includes: An activation unit is used to activate the second processor according to an activation signal, which is obtained by the connection status of the second Type-C interface of the battery pack and / or by pressing the activation button.

9. The battery pack according to claim 5, characterized in that: The second Type-C interface is also used for data interaction with the charger.

10. The battery pack according to claim 9, characterized in that, The battery pack also includes: A Type-C communication unit is connected in series between the second processor and the second Type-C interface to establish a communication connection between the second processor and the charger.

11. A charging assembly, characterized in that, include: Detachable charger and battery pack; The charger includes: The first Type-C interface is used to receive the activation voltage; An on / off control module is used to control the charging of the charger according to the activation voltage; The insert is electrically connected to the battery pack and the on / off control module, and is used to output charging voltage to the battery pack. The on / off control module includes: A first converter is used to step down the activation voltage so that the stepped-down activation voltage is adapted to the operating voltage range of the first processor and output to the first processor; A first processor is configured to output a control signal to a second converter after receiving a stepped-down activation voltage. The first processor is powered only by the activation voltage after being stepped down by the first converter. An AC / DC converter is used to convert external alternating current (AC) into direct current (DC). The second converter is used to step down the DC power and output it to the plug-in according to the control signal of the first processor; The battery pack includes: The second Type-C interface is used to output activation voltage to the charger; The voltage generation module is used to generate an activation voltage to the second Type-C interface; it is also used to obtain the charging status according to the charging parameters, and to stop the generation of the activation voltage when the charging status is abnormal or complete. A power supply terminal, electrically connected to the charger, is used to charge the battery pack; The detection module is used to acquire the charging parameters of the battery pack in real time; The first Type-C interface is compatible with the second Type-C interface, and the plug is compatible with the power supply terminal.

12. A charging method, characterized in that, Applied to the charging assembly as described in claim 11, the charging method includes: The battery pack outputs an activation voltage to the charger, which then charges the battery pack after being powered on. During the charging process, the battery pack monitors the charging parameters of the battery pack in real time, obtains the charging status based on the charging parameters, and stops outputting the activation voltage when the charging status is abnormal or completed.

13. The charging method according to claim 12, characterized in that, The steps before the battery pack outputs an activation voltage to the charger include: Upon receiving an activation signal, the battery pack is activated. The activation signal is obtained through the connection status of the second Type-C interface of the battery pack and / or by pressing the activation button.

14. The charging method according to claim 13, characterized in that, The steps before the battery pack outputs activation voltage to the charger also include: After activating the battery pack, the charging parameters of the battery pack are detected, and the charging status is obtained based on the charging parameters. If the charging status is normal, the activation voltage is output.

15. The charging method according to claim 14, characterized in that, The steps before charging the battery pack after the charger is powered on also include: The charger communicates and hands-on with the battery pack; if the handshake is successful, charging begins.

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