CN113541256B

CN113541256B - Discharge method and discharge system

Info

Publication number: CN113541256B
Application number: CN202110823310.3A
Authority: CN
Inventors: 李雷妮; 付师福; 刘恩锋
Original assignee: Yanxiang Smart Iot Technology Co ltd
Current assignee: Yanxiang Smart Iot Technology Co ltd
Priority date: 2021-07-21
Filing date: 2021-07-21
Publication date: 2024-11-22
Anticipated expiration: 2041-07-21
Also published as: CN113541256A

Abstract

The present invention provides a discharge method and a discharge system, the discharge method comprising: detecting the state of a discharge module; obtaining discharge information according to the state of the discharge module, the discharge information comprising: the connection state between the discharge module and the battery pack; determining a discharge battery pack for discharge in at least one battery pack according to the discharge information, and opening the switching switch submodule corresponding to the discharge battery pack to discharge the discharge battery pack; judging whether the discharge battery pack needs to be replaced to continue the discharge, and if so, replacing the discharge battery pack to continue the discharge until there is no discharge battery pack in the at least one battery pack, or until the discharge is completed, and stopping the discharge device from discharging. The present invention can improve the efficiency of charging electrical equipment.

Description

Discharge method and discharge system

Technical Field

The present invention relates to the field of power management technologies, and in particular, to a discharging method and a discharging system.

Background

With the rapid development of science and technology, the living standard of people is greatly improved. The electric equipment is an indispensable thing in people's daily life.

Although some discharging devices can charge electric equipment by providing a plurality of battery packs in daily life, in order to ensure the safety of charging the electric equipment, the discharging states of the plurality of battery packs need to be manually controlled so as to ensure that the plurality of battery packs can charge the electric equipment stably and continuously. Therefore, the user needs to pay attention to the discharging state of the discharging device in real time so as to manually adjust the discharging state of the corresponding battery pack, thereby seriously reducing the charging efficiency of the discharging device to the electric equipment and reducing the satisfaction degree of the user to the discharging device.

Disclosure of Invention

In order to solve the above problems, the discharging method and the discharging system provided by the invention can automatically control the battery packs in the discharging device to orderly discharge by controlling the replacement of the discharging battery packs.

In a first aspect, the present invention provides a discharge method applied to a discharge device including: the device comprises a control module, a discharge interface and at least two discharge modules;

The discharge interface is electrically connected with at least one discharge module;

each discharging module is used for being electrically connected with one battery pack, so that the battery pack charges electric equipment through the corresponding discharging module;

the control module is used for controlling the discharging module when the discharging interface is connected with the electric equipment so as to charge the electric equipment by the battery pack;

The discharge module includes: the switching device comprises a control module, a battery pack, a switch sub-module and a battery pack, wherein one end of the control module is electrically connected with the battery pack;

the discharging method comprises the following steps:

detecting the state of a discharge module;

according to the state of the discharge module, obtaining discharge information, wherein the discharge information comprises: the connection state of the discharging module and the battery pack;

Determining a discharging battery pack for discharging in at least one battery pack according to the discharging information, and opening a change-over switch sub-module corresponding to the discharging battery pack so as to enable the discharging battery pack to discharge;

and judging whether the discharging battery pack needs to be replaced to continue discharging, if so, replacing the discharging battery pack to continue discharging until the discharging battery pack does not exist in the at least one battery pack, or stopping discharging of the discharging device until the discharging is completed.

Optionally, the discharging module further comprises: a charge-discharge electronic module;

the charge-discharge electronic module is electrically connected with the other end of the corresponding change-over switch sub-module;

the charging and discharging submodule is used for being electrically connected with one battery pack and providing a charging and discharging circuit for the corresponding battery pack so as to charge or discharge the corresponding battery pack;

The discharging method further comprises the following steps:

Judging whether the discharging device is in a charging state;

the determining a discharging battery pack for discharging in at least one battery pack according to the discharging information comprises the following steps:

And determining a discharging battery pack for discharging in at least one battery pack according to the discharging information when the discharging device is not in a charging state.

Optionally, the determining whether the discharging device is in a charging state includes:

judging whether the discharge interface has an input voltage or not;

When the input voltage exists in the discharge interface, judging whether an OTG mode of the discharge device is started, and if so, not keeping the discharge device in a charging state.

Optionally, the discharging method further comprises:

determining the number of discharge modules electrically connected with the battery pack according to the discharge information, and recording as R, wherein R is a natural number;

And when the discharging device is not in a charging state, determining a discharging battery pack for charging in at least one battery pack, and starting the discharging battery pack to discharge, wherein the discharging battery pack comprises the following components:

when an OTG mode of the discharging device is started or no input voltage exists in the discharging interface, n=1 is caused, and whether the working voltage of a battery pack n is larger than or equal to a fourth threshold voltage is judged, wherein the battery pack n is a discharging battery pack for discharging the nth battery pack in the at least one battery pack;

when the working voltage of the battery pack n is greater than or equal to the fourth threshold voltage, starting a switch sub-module corresponding to the battery pack n, and closing other switch sub-modules;

judging whether the working current of the battery pack n is smaller than or equal to a threshold current;

When the working current of the battery pack n is larger than a threshold current, judging whether the working voltage of the battery pack n is larger than or equal to a fifth threshold voltage, wherein the fifth threshold voltage comprises a fourth threshold voltage;

When the working voltage of the battery pack n is smaller than the fifth threshold voltage, adding 1 to n to update n;

judging whether the updated n is smaller than or equal to R, if so, executing the step of judging whether the working voltage of the battery pack n is larger than or equal to a fifth threshold voltage;

closing the discharging device when the updated n is greater than R or when the working current of the battery pack n is less than or equal to a threshold current;

When the working voltage of the battery pack n is greater than or equal to a fifth threshold voltage, judging whether a switch sub-module corresponding to the battery pack n is started, if so, executing the step of judging whether the working current of the battery pack n is less than or equal to the threshold current, if not, executing the step of starting the switch sub-module corresponding to the battery pack n and closing other switch sub-modules;

And when the working voltage of the battery pack n is smaller than the fourth threshold voltage, executing the step of adding 1 to the n to update the n.

Optionally, each discharge module is provided with a unique identification character;

the step of obtaining the discharge information according to the state of the discharge module comprises the following steps:

judging whether a discharging module electrically connected with the battery pack exists or not;

when a discharging module electrically connected with the battery pack exists, storing identification characters corresponding to the discharging module electrically connected with the battery pack in a control list;

determining a discharging module electrically connected with the battery pack according to the identification characters stored in the control list;

The determining the number of the discharging modules electrically connected with the battery pack according to the discharging information comprises the following steps:

And determining the number of discharge modules electrically connected with the battery pack according to the number of the identification characters stored in the control list.

In a second aspect, the present invention provides a discharge system, the system being applied to a discharge device, the discharge device comprising: the device comprises a control module, a discharge interface and at least two discharge modules;

The discharge interface is electrically connected with at least two discharge modules;

The discharge system includes:

a discharge detection module configured to detect a state of the discharge module;

The discharge acquisition module is configured to acquire discharge information according to the state of the discharge module, and the discharge information comprises: the connection state of the discharging module and the battery pack;

The discharging determining module is configured to determine a discharging battery pack for discharging from at least one battery pack according to the discharging information, and open a change-over switch sub-module corresponding to the discharging battery pack so as to enable the discharging battery pack to discharge;

A first discharge judgment module configured to judge whether the discharge battery pack needs to be replaced to continue discharging;

And the discharging replacement module is configured to replace the discharging battery pack to continue discharging when the discharging battery pack needs to be replaced to continue discharging until the discharging battery pack does not exist in the at least one battery pack or until the discharging is completed, and stopping the discharging of the discharging device.

The system further comprises:

a second discharge judgment module configured to judge whether the discharge device is in a charged state;

the discharge determining module is further configured to determine a discharge battery pack for discharging from at least one battery pack according to the discharge information when the discharging device is not in a charged state.

Optionally, the second discharge judgment module includes:

A first discharge judgment sub-module configured to judge whether an input voltage exists at the discharge interface;

and the second discharge judging submodule is configured to judge whether the OTG mode of the discharge device is started or not when the input voltage exists in the discharge interface, and if yes, the discharge device is not in a charging state.

Optionally, the discharge system further comprises:

The discharging recording module is configured to determine the number of the discharging modules electrically connected with the battery pack according to the discharging information, and record the number as R, wherein R is a natural number;

The discharge confirmation module includes:

the third discharging judging submodule is configured to judge whether the working voltage of the battery pack n is greater than or equal to a fourth threshold voltage when the OTG mode of the discharging device is started or when the discharging interface does not have input voltage, and the battery pack n is a discharging battery pack for discharging the nth battery pack in the at least one battery pack;

A first discharge execution submodule configured to execute a discharge switch control submodule when the operating voltage of the battery pack n is greater than or equal to a fourth threshold voltage

The discharging switch control submodule is configured to turn on the change-over switch submodule corresponding to the battery pack n and turn off other change-over switch submodules;

A fourth discharge judgment sub-module configured to judge whether the operating current of the battery pack n is less than or equal to a threshold current;

a second discharge execution sub-module configured to execute a fifth discharge judgment sub-module when the operating current of the battery pack n is greater than a threshold current;

the fifth discharge judgment sub-module is configured to judge whether the working voltage of the battery pack n is greater than or equal to a fifth threshold voltage, wherein the fifth threshold voltage comprises a fourth threshold voltage;

a third discharging execution sub-module configured to add 1 to n to update n when an operating voltage of the battery pack n is less than a fifth threshold voltage;

a discharge update sub-module configured to add 1 to n to update n;

A sixth discharge judgment sub-module configured to judge whether the updated n is less than or equal to R;

A fourth discharge execution sub-module configured to execute the fifth discharge judgment sub-module when the updated n is less than or equal to R;

a discharge shutdown sub-module configured to shut down the discharge device when the updated n is greater than R, or when the operating current of the battery pack n is less than or equal to a threshold current;

A seventh discharging judgment sub-module configured to judge whether the switch sub-module corresponding to the battery pack n is turned on or not when the operating voltage of the battery pack n is greater than or equal to a fifth threshold voltage;

a fifth discharging execution sub-module configured to execute the fourth discharging judgment sub-module when the change-over switch sub-module corresponding to the battery pack n is turned on;

A sixth discharging execution sub-module configured to execute the discharging switch control sub-module when the switch sub-module corresponding to the battery pack n is not turned on;

A seventh discharge execution sub-module configured to execute the discharge update sub-module when the operating voltage of the battery pack n is less than a fourth threshold voltage.

the discharge acquisition module includes:

an eighth discharge judgment sub-module configured to judge whether there is a discharge module electrically connected to the battery pack;

A discharge storage sub-module configured to store, when there is a discharge module electrically connected to the battery pack, an identification character corresponding to the discharge module electrically connected to the battery pack in the control list;

a discharge determination sub-module configured to determine a discharge module electrically connected to the battery pack according to the identification characters stored in the control list;

the discharging record module is further configured to determine the number of discharging modules electrically connected with the battery pack according to the number of identification characters stored in the control list.

According to the discharging method and the discharging system provided by the embodiment of the invention, the discharging modules which are electrically connected with the battery pack in the plurality of discharging modules can be rapidly identified by determining the states of the discharging modules, so that the battery pack can conveniently and rapidly charge electric equipment through the corresponding discharging modules; and through confirming the battery package that discharges, can be convenient for with the battery package electricity be connected the automatic electric equipment that charges of quick stable orderly of module, so not only further improved the efficiency that charges to the electric equipment, avoided the battery package to cross the emergence of putting the phenomenon simultaneously to discharge the security of device has been improved.

Drawings

Fig. 1 is a schematic structural view of a multi-battery pack charge-discharge device according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of a multi-battery pack charge-discharge device according to an embodiment of the present application, which shows an internal connection relationship and a charge-discharge flow chart of the multi-battery pack charge-discharge device;

FIG. 3 is a circuit diagram of a charge-discharge module according to an embodiment of the application;

FIG. 4 is a schematic flow chart of a charging method according to an embodiment of the application;

FIG. 5 is a schematic flow chart of a charging method according to an embodiment of the application;

fig. 6 is a schematic structural view of a charging system according to an embodiment of the present application;

FIG. 7 is a schematic flow chart of a discharging method according to an embodiment of the application;

FIG. 8 is a schematic flow chart of a discharging method according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of a discharging method according to an embodiment of the present application.

Reference numerals

1. A control module; 11. a buck circuit sub-module; 12. a micro control sub-module; 2. a discharge switch; 3. a charge-discharge interface; 4. an electric quantity display module; 5. a charge-discharge module; 51. a switch sub-module; 511. a switch chip is switched; d1, a first diode; d2, a second diode; q1, a first control switch; q2, a second control switch; r1, a first fixed resistor; 52. a charge-discharge electronic module; 521. a charge-discharge chip; q3, a third control switch; q4, a fourth control switch; q5, a fifth control switch; q6, a sixth control switch; l1, inductance; r2, a second fixed resistor; r3, a third fixed resistor; r4, a fourth fixed resistor; r5, a fifth fixed resistor; 6. and a control body.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It is noted that in the present invention, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

In a first aspect, referring to fig. 1 and 2, the present embodiment provides a multi-battery pack charging and discharging device, including: a control body 6, at least one battery pack and at least one charge-discharge module 5. The control main body 6 includes: the device comprises a control module 1, a discharging switch 2, a charging and discharging interface 3 and an electric quantity display module 4. Wherein the number of the battery packs is smaller than or equal to the number of the charge and discharge modules 5. In an alternative embodiment, the multi-battery pack charge-discharge device includes: a control body 6, at least one battery pack and at least two charge and discharge modules 5.

In this embodiment, the multi-battery pack charging and discharging device is compatible with a common input adapter and a high-voltage USB PD input adapter to charge a battery; the number of the control module 1, the discharge switch 2, the charge-discharge interface 3 and the electric quantity display module 4 is one. The number of the battery packs and the number of the charging and discharging modules 5 are four, and each battery pack is detachably and fixedly connected with one and only charging and discharging module 5. Each charging module 5 is detachably and fixedly connected with the control main body 6. The discharging switch 2 is electrically connected with the control module 1, the charging and discharging interface 3 is electrically connected with the charging and discharging module 5, and each battery pack is electrically connected with the control module 1 through one charging and discharging module 5.

The manner of detachable fixed connection between the battery pack and the charge/discharge module 5 and the manner of detachable fixed connection between the charge/discharge module 5 and the control main body 6 may include: the existing magnetic attraction, clamping hook and clamping groove are matched in a clamping way, and the storage bin is matched with the movable baffle in a limiting way. Taking the clamping fit of the clamping hook and the clamping groove as an example, the clamping hook is fixedly connected with the charge-discharge module 5, and the clamping groove matched with the clamping hook is formed in the surface of the battery pack. When the battery pack is mechanically connected with the charge-discharge module 5, the detachable fixed connection of the battery pack and the charge-discharge module 5 can be realized by clamping one end of the clamping hook into the clamping groove.

Further, the control module 1 is configured to identify a charge-discharge module 5 electrically connected to the battery pack in the at least one charge-discharge module 5, and is configured to control the charge-discharge module 5 when the charge-discharge interface 3 is connected to an external power supply, so that the external power supply charges the corresponding battery pack; the discharging switch 2 is used for controlling a charging and discharging module 5 electrically connected with the battery pack through the control module 1 so as to enable the corresponding battery pack to discharge through the charging and discharging interface 3.

Specifically, the manner in which the control module 1 identifies the charge-discharge module 5 electrically connected to the battery pack in the at least one charge-discharge module 5 includes: the control module 1 determines whether the charge and discharge module 5 is electrically connected with the battery pack by detecting the end potential and the pressure received in the charge and discharge module 5 for connection with the battery pack.

According to the multi-battery pack charging and discharging device, the charging and discharging module 5 is detachably connected with the battery pack, so that the weight of the multi-battery pack charging and discharging device can be conveniently adjusted, and the multi-battery pack charging and discharging device is convenient to carry; the charge and discharge modules 5 are detachably connected with the control main body 6, so that a user can select a proper number of charge and discharge modules 5 according to actual use conditions; meanwhile, the corresponding charge and discharge modules 5 are identified and controlled by the control module 1, so that the multi-battery pack charge and discharge device can still be enabled to perform charge and discharge normally under the condition that the number of battery packs is changed.

Meanwhile, the multi-battery pack charging and discharging device can generate better technical effects according to different application scenes. For example, when the multi-battery pack charging and discharging device is used as a charging device for charging mobile phones, smart watches and notebook computers, the number of battery packs can be configured according to the actual outgoing time or the object to be charged. Specifically, if the mobile phone and the intelligent watch only need to be charged by the charger when going out, one or two battery packs in the multi-battery pack charging and discharging device can be reserved to be electrically connected with the corresponding charging and discharging module 5; if the charger is required to charge the notebook computer, three or four battery packs in the multi-battery pack charging and discharging device are reserved to be electrically connected with the corresponding charging and discharging modules 5. So many battery package charge-discharge device can select the battery package of suitable quantity to dispose according to practical application's scene, the effectual weight that lightens many battery package charge-discharge device has avoided carrying of unnecessary battery package to bring inconvenience for going out.

When the multi-battery pack charging and discharging device is used as a power supply device of large-scale electric equipment, such as an electric automobile, when the electric automobile is used for driving in urban short mileage, two battery packs can be configured on the multi-battery pack charging and discharging device so as to supply power for the electric automobile; when the electric vehicle is used for long-range driving, four batteries can be arranged on the multi-battery discharging device to supply power for the electric vehicle. Under the condition of not influencing the driving of the automobile with long mileage, the electric automobile can carry fewer batteries in a short mileage, so that the weight of the electric automobile is reduced, and the mileage of the electric automobile which can be driven under the unit electric quantity can be effectively prolonged.

Further, each of the charge and discharge modules 5 includes: a switch sub-module 51 and a charge-discharge sub-module 52.

The switch sub-module 51 is electrically connected with the control module 1, the charge/discharge sub-module 52 is electrically connected with the switch sub-module 51, and the battery pack is electrically connected with the corresponding charge/discharge sub-module 52. The switch sub-module 51 is used for controlling the on-off of the charge-discharge sub-module 52 and the charge-discharge interface 3; the charge-discharge electronic module 52 is configured to provide a charge-discharge circuit for the corresponding battery pack to charge or discharge the corresponding battery pack.

Referring to fig. 3, the diverter switch sub-module 51 includes: a first diode D1, a switching switch chip 511, a first control switch Q1, and a second control switch Q2. The first control switch Q1 includes: a first control terminal, a first positive terminal, and a first negative terminal. The second control switch Q2 includes: a second control terminal, a second positive terminal, and a second negative terminal.

The first control end is used for controlling the first positive end and the first negative end to be conducted when the potential of the first control end reaches a first threshold potential; the second control end is used for controlling the second positive end and the second negative end to be conducted when the potential of the second control end reaches a first threshold potential. The switching chip 511 is configured to supply a potential not less than the first threshold potential to the first control terminal and the second control terminal upon receiving a first control signal.

The anode of the first diode D1 is electrically connected with the charge-discharge interface 3; the cathode of the first diode D1 is electrically connected to the switch chip 511; the first control end and the second control end are electrically connected with the change-over switch chip 511 through a first fixed resistor R1; the first negative terminal is electrically connected with the charge-discharge interface 3; the second negative terminal is electrically connected to the charge-discharge submodule 52; the first positive end is electrically connected with the second positive end; the switch chip 511 is electrically connected to the control module 1.

The charge and discharge submodule 52 includes: the third control switch Q3, the fourth control switch Q4, the fifth control switch Q5, the sixth control switch Q6, the charge-discharge chip 521, and the inductor L1. The third control switch Q3 includes: a third control terminal, a third positive terminal, and a third negative terminal; and the third control end is used for controlling the third positive end and the third negative end to be conducted when the potential of the third control end reaches a second threshold potential. The fourth control switch Q4 includes: a fourth control terminal, a fourth positive terminal, and a fourth negative terminal; the fourth control end is used for controlling the fourth positive end and the fourth negative end to be conducted when the potential of the fourth control end reaches a second threshold potential. The fifth control switch Q5 includes: a fifth control terminal, a fifth positive terminal, and a fifth negative terminal. The fifth control terminal is used for controlling the fifth positive terminal and the fifth negative terminal to be conducted when the potential of the fifth control terminal reaches a second threshold potential. The sixth control switch Q6 includes: a sixth control terminal, a sixth positive terminal, and a sixth negative terminal. The sixth control terminal is used for controlling the conduction of the sixth positive terminal and the sixth negative terminal when the potential of the sixth control terminal reaches a second threshold potential. The charge/discharge chip 521 is configured to provide, when receiving a second control signal, a potential not less than the second threshold potential to the third control terminal, the fourth control terminal, the fifth control terminal, and the sixth control terminal, so as to charge or discharge the corresponding battery pack.

One end of the inductor L1 is electrically connected to the third positive terminal and the fifth negative terminal, the other end of the inductor L1 is electrically connected to the fourth positive terminal and the sixth negative terminal, the third control terminal is electrically connected to the charge-discharge chip 521 through a fifth fixed resistor R5, the fourth control terminal is electrically connected to the charge-discharge chip 521 through a second fixed resistor R2, the fifth control terminal is electrically connected to the charge-discharge chip 521 through a fourth fixed resistor R4, the sixth control terminal is electrically connected to the charge-discharge chip 521 through a third fixed resistor R3, the third negative terminal is electrically connected to the corresponding switch module 51, the fourth negative terminal is electrically connected to the corresponding battery pack, the fifth positive terminal and the sixth positive terminal are both grounded, and the charge-discharge chip 521 is electrically connected to the control module 1. The fourth control switch Q4 is electrically connected to the charge/discharge chip 521 through a second fixed resistor R2. The charge-discharge electronic module 52 formed by the third control switch Q3, the fourth control switch Q4, the fifth control switch Q5, the sixth control switch Q6, the charge-discharge chip 521 and the inductor L1 forms a Buck-Boost loop, so as to realize the charge function of the multi-battery pack charge-discharge device on the battery pack through the charge-discharge interface 3 and the discharge function of the device to be charged through the charge-discharge interface 3.

The first control switch Q1, the second control switch Q2, the third control switch Q3, the fourth control switch Q4, the fifth control switch Q5, and the sixth control switch Q6 are all identical in specification and may be a field effect transistor, a triode, or the like. The first potential and the second potential are not limited in this embodiment, and the potential of the corresponding field effect transistor in the circuit can be broken down.

In this embodiment, the first control switch Q1, the second control switch Q2, the third control switch Q3, the fourth control switch Q4, the fifth control switch Q5 and the sixth control switch Q6 are all N-type mos transistors with the same specification. The first control end, the second control end, the third control end, the fourth control end, the fifth control end and the sixth control end are all grid electrodes; the first positive end, the second positive end, the third positive end, the fourth positive end, the fifth positive end and the sixth positive end are all source electrodes; the first negative terminal, the second negative terminal, the third negative terminal, the fourth negative terminal, the fifth negative terminal and the sixth negative terminal are drain electrodes.

Further, the control module 1 includes: a buck circuit sub-module 11 and a micro control sub-module 12. The output end of the buck circuit sub-module 11 is electrically connected with the micro control sub-module 12 and the charge-discharge chip 521, and the input end of the buck circuit sub-module 11 is electrically connected with the charge-discharge interface 3; the operating voltage of the micro-control sub-module 12 is 3.3V. Electrically connecting the charge-discharge chip 521 with the buck-loop sub-module 11 can enable certain signals of the charge-discharge chip 521 to be pulled up to 3.3V externally, such as I2C pins in the charge-discharge chip 521 to be pulled up to 3.3V externally, to communicate with the micro-control sub-module 12.

The electric quantity display module 4 is electrically connected with the micro-control submodule 12; the electric quantity display module 4 is used for displaying the residual electric quantity of the battery pack and the state of the battery pack, which are electrically connected with the charge-discharge module 5; the state of the battery pack includes: a charged state, a discharged state, and a stationary state. Wherein, the standing state W is a state of the battery pack in a non-working state. In this embodiment, the micro control sub-module 12 is an MCU (Microcontroller Unit, micro control unit); the charge-discharge chip 521 is a Buck-Boost charge-discharge chip 521.

The step-down circuit sub-module 11 is used for adjusting the voltage provided by the charge-discharge interface 3 when the battery pack is charged; the charge-discharge interface 3 is configured to provide the working voltage of the micro control sub-module 12 to the micro control sub-module 12 through the buck circuit sub-module 11.

In addition, the input of the buck circuit sub-module 11 is electrically connected to the at least one battery pack via a diode. Wherein the anode of the diode is electrically connected with the battery pack, and the cathode of the diode is electrically connected with the buck circuit sub-module 11. The step-down circuit sub-module 11 is used for adjusting the voltage provided by the battery pack when the battery pack is electrically connected for discharging. The at least one battery pack is configured to provide the micro-control submodule 12 with an operating voltage of the micro-control submodule 12 via the buck circuit submodule 11. The micro-control sub-module 12 is configured to send a first control signal and a second control signal to the charge/discharge module 5, so as to charge or discharge the corresponding battery pack.

Specifically, taking a circuit of the charge-discharge module 5 as an example, when the multi-battery pack charge-discharge device is in a charged state, the control module 1 controls the switch chip 511 to supply power to the battery pack through VIN to the first diode D1, and outputs an en_s1 signal, i.e. a first control signal, to the switch chip 511 through the control module 1, so that the first control switch Q1 and the second control switch Q2 are turned on by the gate voltage provided by the switch chip 511 through the first fixed resistor R1, so that the first control switch Q1 is turned on by the second control switch Q2. Then, when the Buck-Boost charge-discharge chip 521 detects that the potential greater than zero exists at vin_1, a Buck-Boost loop is formed by the third control switch Q3, the fourth control switch Q4, the fifth control switch Q5, the sixth control switch Q6, the charge-discharge chip 521 and the inductor L1, and the voltage input to the Buck-Boost loop finally charges the battery pack through the fourth negative terminal. Wherein VIN is one end of the circuit of the switch sub-module 51 electrically connected to the charge/discharge interface 3, and vin—1 is one end of the circuit of the switch sub-module 51 electrically connected to the charge/discharge sub-module 52.

When the input adapter is not in the state of charge, that is, when the batteries in the multi-battery pack charging and discharging device are not in the state of charge, the MCU detects a switch signal triggered by the discharging switch 2 by pressing the discharging switch 2, and at this time, the MCU selects a battery corresponding to the charging and discharging module 5 for discharging according to the charging and discharging information stored in the multi-battery pack charging and discharging device. Specifically, the MCU sends an en_otg1 signal, that is, a second control signal, to the Buck-Boost charge-discharge chip 521, so as to turn on the discharge function of the Buck-Boost charge-discharge chip 521, so that the battery pack generates a preset output voltage on the third negative terminal through the Buck-Boost loop, and sends an en_s1 signal to turn on the switch chip 511 through the MCU, at this time, the switch chip 511 turns on the first control switch Q1 and the second control switch Q2 through the preset output voltage provided from the third negative terminal to the second diode D2, so that the first control switch Q1 and the second control switch Q2 are turned on mutually, and a corresponding output voltage is generated at the first negative terminal, so as to realize charging the device to be charged through the charge-discharge interface 3. Meanwhile, in this process, the control module 1 controls the switch sub-modules 51 in the other charge-discharge modules 5 to be in the off state, i.e. controls the switch sub-modules in the other charge-discharge modules 5 to disconnect the corresponding charge-discharge sub-modules 52 from the charge-discharge interface 3, so that the battery packs being discharged can be prevented from charging other battery packs, and the discharging effect of the multi-battery pack charge-discharge device is affected.

In an alternative embodiment, the multi-battery pack charge-discharge device further includes: and a storage module. The storage module is electrically connected with the charge-discharge module 5 and the control module 1; the storage module is used for storing charge and discharge information. The control module 1 is further configured to control the corresponding charge/discharge module 5 according to the charge/discharge information, so as to charge or discharge the corresponding battery pack;

wherein the charge and discharge information includes: the connection state of the charge and discharge module 5 and the battery pack; or the charge and discharge information includes: the connection state of the charge and discharge module 5 and the battery pack, and the remaining capacity of the battery pack electrically connected to the charge and discharge module 5.

The storage module is arranged to enable the control module 1 to quickly identify all the charge and discharge modules 5 electrically connected with the battery pack in the charge and discharge modules 5, so that the control module 1 can accurately control the corresponding change-over switch sub-module 51 to conduct or break.

Further, each charge-discharge module 5 is provided with a unique identification character; the storage module provides a control list. The control list includes: a first memory column. The first storage column is used for storing identification characters respectively corresponding to the at least one charge and discharge module 5 and sequencing the stored identification characters; or, the device is used for storing the identification characters corresponding to the charge and discharge modules 5 electrically connected with the battery pack and sequencing the stored identification characters.

The control module 1 is further configured to sequentially control the corresponding battery packs to charge or discharge according to the order of the identification characters arranged in the first storage column.

In the case that the first storage column is used for storing the identification characters corresponding to the charge and discharge module 5 electrically connected with the battery pack and sorting the stored identification characters, the arrangement mode of the identification characters is as follows:

For example, the multi-battery pack charging and discharging device includes four charging and discharging modules 5, and the identification characters corresponding to each charging and discharging module are respectively: a. b, c, d.

List one

a

c

d

If the information stored in the first storage column is shown in table one, it indicates that the charge and discharge module 5 corresponding to the identification character b is not electrically connected with the battery pack. While the corresponding battery packs are operated in the order of a→c→d during the charge and discharge, the embodiment is not limited thereto.

When the first storage column stores the identification characters respectively corresponding to the at least one charge and discharge module 5, the control list further includes: a second memory column; the second storage column is used for storing the connection state of the at least one charge and discharge module 5 and the battery pack. Wherein, the connection state of each charge-discharge module 5 and the battery pack corresponds to the corresponding identification character. The arrangement of the identification characters at this time is as follows, but not limited thereto:

Watch II

b	a	d	c
				1	1	0	1

In table two, the first row of table is the first storage column, the second row of table is the second storage column, 1 indicates that the corresponding charge and discharge module 5 is electrically connected with the battery pack, and 0 indicates that the corresponding charge and discharge module 5 is not electrically connected with the battery pack. Thus, the corresponding battery packs are operated in the order of b→a→c during the charge and discharge, but the embodiment is not limited thereto.

In this alternative embodiment, the control list includes: the first storage column is used for storing identification characters corresponding to the charge and discharge module 5 electrically connected with the battery pack; the charge and discharge information includes: the connection state of the charge and discharge module 5 and the battery pack, and the remaining capacity of the battery pack electrically connected to the charge and discharge module 5.

And when the second storage column is used for storing the residual electric quantity of the battery pack and the connection state of the at least one charge-discharge module 5 and the battery pack, the second storage column stores charge-discharge information by providing a plurality of word bits. Taking the second storage column as an example, by providing 5 word bits, one word bit is used for storing the connection state of the charge and discharge module 5 corresponding to the identification character and the battery pack, and the other word bits are used for storing the residual electric quantity of the corresponding battery pack. Such as: 11000, wherein the charging and discharging module 5 corresponding to the identification character is electrically connected with a battery pack, and the electric quantity of the corresponding battery pack is less than 30%;10100, the charge and discharge module 5 corresponding to the identification character is electrically connected with a battery pack, and the electric quantity of the corresponding battery pack is more than 30% and less than 70%;10010, namely, the charge and discharge module 5 corresponding to the identification character is electrically connected with a battery pack, and the electric quantity of the corresponding battery pack is more than 70% and less than 100%;10001, the charge and discharge module 5 corresponding to the identification character is electrically connected with a battery pack, and the electric quantity of the corresponding battery pack is full; 00000 indicates that the charge/discharge module 5 corresponding to the identification character is not electrically connected with the battery pack.

Through setting up the storage list, can make many battery package charge-discharge device carry out the order of discharging to the battery package voluntarily, so can make the user demolish the battery package at will, and need not demolish according to a certain fixed order to make the dismantlement of battery package more nimble.

The working principle of the multi-battery pack charging and discharging device provided by the embodiment is as follows:

charging principle: after an external power supply is inserted into the charge-discharge interface 3 through an adapter, the voltage-reducing loop works and supplies power to the MCU; after the MCU works, the MCU starts to identify the charge/discharge module 5 electrically connected to the battery pack in the at least one charge/discharge module 5, after the identification is completed, detects the remaining capacity of each battery pack and opens all the switch sub-modules 51 electrically connected to the battery pack by sending a first control instruction, so that the voltage starts to work when the voltage is detected to the Buck-Boost charge/discharge chip 521 through the switch sub-modules 51 and receives the second control signal sent by the MCU, and charges the battery pack with the corresponding battery pack, and during the charging process, the MCU monitors the remaining capacity of each battery pack in real time and controls the battery pack to work in the corresponding charging mode through the Buck-Boost charge/discharge chip 521, and meanwhile, the charge display module 4 displays the charging state and the remaining capacity corresponding to each battery pack in real time.

Principle of discharge: when the charging/discharging interface 3 is not connected with an external power supply, the discharging switch 2 is pressed down, and at this time, the battery pack supplies power to the step-down loop, so that the MCU starts to identify the charging/discharging module 5 electrically connected with the battery pack in the at least one charging/discharging module 5, after identification is completed, the number of the battery packs is detected, and when the MCU detects a switching signal triggered by the discharging switch 2, the MCU sends an en_otg1 signal, namely a second control signal, to the corresponding Buck-Boost charging/discharging chip 521 according to a discharging sequence, and sends an en_s1 signal, namely a first control signal, to the corresponding switch chip 511, so that the corresponding Buck-Boost charging/discharging chip 521 discharges to the charging/discharging interface 3 through the battery pack 1, thereby realizing the charging/discharging same interface function. At the same time, the MCU controls the other switch sub-modules 51 to be in the off state, so as to prevent the discharged battery pack from charging other battery packs. When the MCU monitors that the voltage of the battery pack 1 is lower than a certain value, the MCU sends the en_s1 signal to the switch chip 511 which is discharging again, and sends the en_otg1 signal to the charge-discharge electronic module 52 which is discharging, so as to stop the battery pack 1 from continuing to discharge, and at the same time, the other switch sub-module 51 is turned on by sending the en_s2 signal, and the Buck-Boost charge-discharge chip 521 is turned on by sending the en_otg2 signal to enable the battery pack 2 to continue to discharge, so that the state of the other charge-discharge modules 5 is consistent with that before, and the battery pack is in a turned-off state. And the like until all the configured battery packs are discharged to stop, the electric quantity display module 4 displays the end of the discharge and displays the residual electric quantity of all the battery packs, thereby realizing the function of alternately discharging multiple batteries.

In a second aspect, the present embodiment provides a charging method, where the charging method is applied to any multi-battery charging device having a charging function, and in the present embodiment, the multi-battery charging device is a multi-battery pack charging and discharging device in the first aspect. The charging interface in the charging device of the multiple batteries is the charging and discharging interface 3 in the charging and discharging device of the multiple battery packs; the charging module in the multi-battery charging device is the charging and discharging module 5 in the multi-battery pack charging and discharging device; the device to be charged is a battery pack in the multi-battery pack charging and discharging device; the charging information is the charging and discharging information in the multipoint battery charging and discharging device; the charging method is controlled and implemented by the micro-control sub-module 12.

Referring to fig. 4, the charging method includes steps S101 to S106:

step S101: and judging whether the input voltage of the external power supply is within a preset voltage range.

In an alternative embodiment, the charging module further comprises: and a charge-discharge submodule 52. The charge-discharge submodule 52 is electrically connected with the other end of the corresponding change-over switch submodule 51; the charging and discharging electronic module 52 is configured to electrically connect to a device to be charged, and provide a charging and discharging circuit for the corresponding device to be charged, so as to charge or discharge the corresponding device to be charged.

Before the step of judging whether the input voltage of the external power supply is within the preset voltage range, the charging method further comprises the following steps: and judging whether the device to be charged is in a discharging state. When The device to be charged is in a discharging state, the OTG (On The Go) mode of The charging device is turned off to end The discharging of The charging device, and step S101 is performed after The discharging of The charging device is ended.

The judging whether the input voltage of the external power supply is within a preset voltage range comprises the following steps: when the device to be charged is not in a discharging state, judging whether the input voltage of the external power supply is in a preset voltage range.

Step S102: and detecting the state of the charging module when the input voltage of the external power supply is within the preset voltage range.

The preset voltage range is a voltage range that the charging device is allowed to input, and the embodiment does not limit the voltage range that the charging device is allowed to input.

In an alternative embodiment, when the input voltage of the external power supply is not within the preset voltage range, the charging device is ended to charge the device to be charged, and the user is informed to check whether the external power supply and the charging device are abnormal. Therefore, accidents caused by the charging device in an abnormal state can be avoided.

Step S103: and acquiring charging information according to the state of the charging module.

In an optional embodiment, the acquiring the charging information according to the state of the charging module includes: judging whether the connection state of the charging module and the device to be charged is changed or not according to the detected connection state of the charging module and the device to be charged, if so, adjusting the information stored in the second storage column to store the connection state of the corresponding charging module and the device to be charged in the second storage column, and then acquiring the connection state of the charging module and the device to be charged from the second storage column; if the connection state does not exist, the connection state of the charging module and the device to be charged is directly obtained from the second storage column.

Step S104: judging whether the switch sub-module 51 is turned on according to the charging information, and when the switch sub-module 51 electrically connected with the device to be charged is not turned on, turning on the switch sub-module 51 electrically connected with the device to be charged so as to enable the charging interface to be conducted with the corresponding device to be charged.

In an alternative embodiment, when the switch sub-module 51 electrically connected to the device to be charged is not turned on, the switch sub-module 51 electrically connected to the device to be charged is turned on, so that the charging interface is turned on with the corresponding device to be charged, including: determining a change-over switch sub-module 51 electrically connected with the device to be charged according to the connection state of the charging module and the device to be charged; the change-over switch sub-module 51 electrically connected with the device to be charged is turned on to conduct the charging interface with the corresponding device to be charged.

Through the connection state of the charging module and the device to be charged, the corresponding change-over switch sub-module 51 is controlled to be opened and closed, so that the external power supply can be prevented from supplying power to the charging module which is not electrically connected with the device to be charged, the effect of the inside of the charging module on electric energy is caused, the electric energy waste can be saved, and the energy-saving effect of the charging device is realized.

In an alternative embodiment, the charging information further includes: and the residual electric quantity of the device to be charged is electrically connected with the charging module.

When the switch sub-module 51 electrically connected to the device to be charged is not turned on, the switch sub-module 51 electrically connected to the device to be charged is turned on to enable the charging interface to be conducted with the corresponding device to be charged, and the method further includes: determining a device to be charged, which needs to be charged, in the devices to be charged electrically connected with the charging module according to the residual electric quantity of the devices to be charged electrically connected with the charging module; the switch sub-module 51 corresponding to the device to be charged is turned on, so that the charging interface is conducted with the corresponding device to be charged.

According to the residual electric quantity of the device to be charged electrically connected with the charging module, the corresponding change-over switch sub-module 51 is controlled to be turned on and off, so that overcharging of the battery pack can be further avoided, and the service life of the battery pack is prolonged.

Step S105: and detecting the working voltage of the device to be charged, which is conducted with the charging interface.

Step S106: and controlling the device to be charged to enter different charging modes for charging according to the working voltage of the device to be charged.

Wherein the charging information includes: the connection state of the charging module and the device to be charged; the charging mode includes: at least two of a precharge mode (pre-charge mode), a constant current charge mode (CC mode), and a constant voltage charge mode (CV mode).

According to the charging method, whether the preset voltage is within the preset voltage range or not is judged, so that the good electrical connection state of the external power supply and the charging device can be ensured, the external power supply can provide stable charging voltage for the charging device, the charging safety can be ensured, the abnormal operation of the charging device is prevented, and further, the safety guarantee is provided for the subsequent charging process; by judging whether the change-over switch sub-module 51 is started or not according to the charging information, the external power supply can be rapidly controlled to charge the device to be charged through the corresponding charging module, other charging modules which are not electrically connected with the device to be charged, including the charging module which is not electrically connected with the device to be charged due to false pulling, are avoided, electric energy is consumed, and therefore the energy saving effect of the charging device is achieved; and finally, according to the working voltage of the device to be charged, the device to be charged is controlled to enter different charging modes for charging, so that the charging safety can be improved, the charging efficiency can be further improved, and the overcharging of the battery pack can be avoided.

In an optional embodiment, after detecting the state of the charging module when the input voltage of the external power supply is within the preset voltage range, the method further includes:

storing identification characters corresponding to a charging module electrically connected with a device to be charged in a first storage column, and sequencing the identification characters in the first storage column;

determining the arrangement sequence of the devices to be charged according to the arrangement sequence of the identification characters in the first storage column;

According to the working voltage of the device to be charged, the device to be charged is controlled to enter different charging modes for charging, and the method comprises the following steps: according to the arrangement sequence of the devices to be charged, the working voltage of the devices to be charged is sequentially detected, and according to the working voltage of the devices to be charged, the devices to be charged are sequentially controlled to enter different charging modes for charging.

In an alternative embodiment, the controlling the device to be charged to enter different charging modes for charging according to the operating voltage of the device to be charged includes:

determining the number of charging modules conducted with a charging interface, and recording as N, wherein N is a natural number;

Acquiring Vn when n=1, wherein the Vn is the working voltage of an nth device to be charged in the devices to be charged electrically connected with the charging module;

judging whether Vn is smaller than a first threshold voltage;

When Vn is smaller than a first threshold voltage, controlling a device to be charged corresponding to Vn to enter a precharge mode for charging;

Adding 1 to n to update n;

Judging whether the updated N is smaller than or equal to N;

Executing the step of judging whether the Vn is smaller than a first threshold voltage or not when the updated N is smaller than or equal to N;

When the updated N is greater than N, executing the step of judging whether the input voltage of the external power supply is within a preset voltage range, or executing the step of acquiring charging information according to the state of the charging module, or executing the step of judging whether the switch sub-module 51 is turned on according to the charging information, or executing the step of acquiring Vn when n=1;

when the Vn is not smaller than the first threshold voltage, judging whether the Vn is smaller than or equal to a second threshold voltage, wherein the second threshold voltage is larger than the first threshold voltage;

When the Vn is smaller than or equal to the second threshold voltage, controlling a device to be charged corresponding to the Vn to enter a constant current charging mode for charging, and executing the step of adding 1 to n to update the n;

when Vn is larger than a second threshold voltage, judging whether Vn is smaller than a third threshold voltage or not, wherein the third threshold voltage is larger than the second threshold voltage;

When Vn is smaller than a third threshold voltage, controlling a device to be charged corresponding to the Vn to enter a constant voltage charging mode for charging, and executing the step of adding 1 to n to update n;

When Vn is not less than the third threshold voltage, the switch sub-module 51 electrically connected to the device to be charged corresponding to Vn is disconnected, and the step of adding 1 to n is performed to update n.

The specific values of the first threshold voltage, the second threshold voltage and the third threshold voltage are determined by the specification of the device to be charged, which is not limited in this embodiment.

The number of the charging modules conducted with the charging interface is recorded, and Vn is used as the working voltage of the nth device to be charged in the devices to be charged electrically connected with the charging modules, so that the working voltages of all the devices to be charged can be efficiently and orderly monitored; meanwhile, each battery pack can independently enter a corresponding charging mode to charge according to the self condition, so that each battery pack can be charged stably and rapidly.

In addition, through the judgment of the N and the N, the charging system 200 corresponding to the charging method can continuously monitor the working voltages of all the devices to be charged, so that the battery pack can be effectively controlled to enter a corresponding charging mode for charging according to the change of the working voltage in the charging process, and the service life of the battery pack is further prolonged.

Further, when the updated N is greater than N, the step of determining whether the input voltage of the external power supply is within the preset voltage range is performed, so that the charging system 200 corresponding to the charging method can continuously monitor the working voltages of all the devices to be charged, and can monitor the input voltage of the charging device in the charging process, so as to prevent the charging device from being abnormally charged in the charging process, and the charging device and the devices to be charged from being damaged.

When the updated N is greater than N, the step of acquiring the charging information according to the state of the charging module or the step of judging whether the switch sub-module 51 is turned on or not according to the charging information is performed, so that the device to be charged which needs to be charged can be updated, and the external power supply can be quickly stopped to supply power to the charging module corresponding to the device to be charged, the working voltage of which is not less than the third threshold voltage.

And when the updated N is greater than N, performing the step of obtaining Vn when n=1; the charging system 200 corresponding to the charging method can rapidly detect the working voltage of the 1 st device to be charged again, so that the efficiency of cycle detection is improved.

In an alternative embodiment, each charging module corresponds to a unique identification character. The charging method further includes: acquiring an identification character corresponding to a charging module electrically connected with a device to be charged; storing identification characters corresponding to a charging module electrically connected with a device to be charged in a first storage column, and sequencing the identification characters in the first storage column; and determining the arrangement sequence of the devices to be charged according to the arrangement sequence of the identification characters in the first storage column.

Through setting up the first memory column of setting for identification character and being used for storing the identification character that the charging module that is connected with waiting to charge the device electricity corresponds, can make waiting to charge the device and fast, orderly get into corresponding charging mode and charge to can further avoid charging device to appear unusual in the charging process.

In an alternative embodiment, each charging module corresponds to a unique identification character. The charging method further includes: acquiring an identification character of each charging module; respectively storing the identification characters of each charging module in a first storage column, and sequencing the identification characters in the first storage column; the connection state of each charge and discharge module 5 and the battery pack is stored in the second storage column. Wherein, the connection state of each charge-discharge module 5 and the battery pack corresponds to the corresponding identification character.

According to the working voltage of the device to be charged, the device to be charged is controlled to enter different charging modes for charging, and the method comprises the following steps: according to the information stored in the first storage column and the second storage column, the working voltages of the corresponding devices to be charged are sequentially detected, and according to the working voltages of the devices to be charged, the devices to be charged are sequentially controlled to enter different charging modes to be charged.

Through setting up the first memory column that sets up the sign character, be used for storing the sign character and be used for storing every charge and discharge module 5 and battery package's connected state's second memory column, can charging device be stable, orderly control corresponding wait to charge the device and get into corresponding charge mode and charge to can further avoid charging device to appear unusual in the charging process.

In an alternative embodiment, the charging method further comprises: judging whether the connection state of the charging module and the device to be charged is changed or not according to the detected connection state of the charging module and the device to be charged, and if so, adjusting the information stored in the first storage column or/and the information stored in the second storage column.

Specifically, when the updated N is greater than N, there is a change in a connection state between the charging module and the device to be charged, including: the device to be charged is pulled out, or the device to be charged fails and cannot be electrically connected with the charging module. When the first storage column is used for storing the identification character corresponding to the charging module electrically connected with the device to be charged, the adjusting the information stored in the first storage column includes: and clearing the identification characters stored in the first storage column and corresponding to the device to be charged, which is electrically connected with the device to be charged.

When the first storage column is used for storing the identification character corresponding to each charging module, the adjusting the information stored in the first storage column includes: adjusting the information stored in the second storage column to distinguish the charging module corresponding to the pulled-out device to be charged from other charging modules electrically connected with the device to be charged; or clearing the identification characters stored in the first storage column and corresponding to the device to be charged and electrically connected with the device to be charged, and clearing the information stored in the second storage column and corresponding to the identification characters. So can prevent at the charging process that the device that waits to charge can not normally be connected with corresponding charging module electricity, and external power supply continuously supplies power to corresponding charging module, and charging device continues to carry out the phenomenon emergence that monitors to corresponding charging module and the device that waits to charge to not only can further improve the security of charging, but also can further reduce unnecessary consumption simultaneously, further improve charging device's energy-conserving efficiency.

In a third aspect, in combination with fig. 5, the present embodiment provides a charging method applied to the multi-battery pack charging and discharging device in the first aspect, based on the content of the second aspect. In this embodiment, the multi-battery pack charging and discharging device is a charger containing a plurality of battery packs.

The charging method comprises the following steps:

Firstly, after a charger is inserted into a charger, the MCU judges whether a battery pack in the current charger is in an OTG discharging state, namely judges whether an OTG mode of the battery pack in the current charger is started; if so, closing the OTG mode to finish the discharge of the charge pal, and entering the next step after finishing the discharge of the charge pal; if not, directly entering the next step.

Then, the MCU judges whether the input voltage of the charging device is within the range of Vin 1-Vin 2, if not, the charging method is directly ended, the charging device is controlled to enter an input protection state, and charging is ended. If so, go to the next step. Wherein Vin1 and Vin2 are the protection points of the input low voltage and the income high voltage preset by the charging device respectively.

Then, the MCU detects the total number of the battery packs, marks the battery packs in place, sorts the battery packs in place at the same time, and opens all charge-discharge switches Sn corresponding to the battery packs in place, i.e., the switch sub-module 51, and proceeds to the next step.

The in-place battery pack is a battery pack electrically connected with the corresponding charging module. Ordering the in-place battery packs includes: and storing the identification characters corresponding to the charging modules electrically connected with the in-place battery packs in a first storage column and sequencing. The charging method further includes: determining the arrangement sequence of the in-place battery packs according to the arrangement sequence of the identification characters in the first storage column, for example: battery pack 1, battery packs 2, … …, and battery pack n, n being a positive integer.

Then, the MCU starts to detect from the working voltage of the battery pack 1 to control the battery pack to enter a corresponding charging mode for charging according to the working voltage of the battery pack 1. Specifically, whether the working voltage of the battery pack 1 is smaller than the first threshold voltage V1 is judged, if so, the battery pack 1 enters a precharge mode, and the next step is to judge the working voltage of the battery pack 2; if not, continuously judging whether the working voltage of the battery pack 1 is greater than or equal to the first threshold voltage V1 and less than or equal to the second threshold voltage V2, if so, the battery pack 1 enters a constant current charging mode, and then the working voltage of the battery pack 2 is judged. If not, continuing to judge whether the working voltage of the battery pack 1 is larger than the second threshold voltage and smaller than the third threshold voltage V3, if so, entering a constant voltage charging mode by the battery pack 1, and then judging the working voltage of the battery pack 2. If not, continuing to judge whether the working voltage of the battery pack 1 is greater than the third threshold voltage V3, if so, determining that the battery pack 1 is in a full-charge state, ending the charging of the battery pack 1, and entering the next step of judging the working voltage of the battery pack 2.

And finally, judging the working voltages of all the in-place battery packs according to the sequence of the last step, circularly judging the voltage of each in-place battery pack after entering a corresponding charging mode, and when N is less than or equal to N and is not less than N, finishing one round of judgment and charging mode setting of all the in-place battery packs, and then entering a new round of judgment from the battery pack 1, so that the cycle is repeated until all the in-place batteries are charged.

In a fourth aspect, in connection with fig. 6, the present invention provides a charging system 200, where the charging system 200 is applied to any multi-battery charging device with a charging function, and in this embodiment, the multi-battery charging device is a multi-battery pack charging and discharging device in the first aspect. The charging interface in the charging device of the multiple batteries is the charging and discharging interface 3 in the charging and discharging device of the multiple battery packs; the charging module in the multi-battery charging device is the charging and discharging module 5 in the multi-battery pack charging and discharging device; the device to be charged is a battery pack in the multi-battery pack charging and discharging device; the charging system 200 is controlled by the micro-control sub-module 12.

The charging system 200 includes:

A first judging module 201 configured to judge whether an input voltage of the external power supply is within a preset voltage range;

a first detection module 202 configured to detect a state of the charging module when an input voltage of the external power supply is within the preset voltage range;

an obtaining module 203 configured to obtain charging information according to a state of the charging module;

the second judging module 204 is configured to judge whether the switch sub-module 51 is turned on according to the charging information, and when the switch sub-module 51 electrically connected with the device to be charged is not turned on, turn on the switch sub-module 51 electrically connected with the device to be charged, so as to enable the charging interface to be conducted with the corresponding device to be charged;

in an alternative embodiment, the second determining module 204 includes:

The first charging determination submodule is configured to determine a change-over switch submodule electrically connected with the device to be charged according to the connection state of the charging module and the device to be charged;

the first charging opening sub-module is configured to open a change-over switch sub-module electrically connected with the device to be charged so as to enable the charging interface to be conducted with the corresponding device to be charged.

A second detection module 205 configured to detect an operating voltage of the device to be charged, which is in conduction with the charging interface;

the charging control module 206 is configured to control the device to be charged to enter different charging modes for charging according to the working voltage of the device to be charged;

the charging information includes: the connection state of the charging module and the device to be charged;

the charging mode includes: at least two of a precharge mode, a constant current charging mode, and a constant voltage charging mode.

In an alternative embodiment, the charging module further comprises: a charge-discharge submodule 52;

The charge-discharge submodule 52 is electrically connected with the other end of the corresponding change-over switch submodule 51;

The charging and discharging electronic module 52 is configured to electrically connect with a device to be charged, and provide a charging and discharging circuit for the corresponding device to be charged, so as to charge or discharge the corresponding device to be charged;

The charging system 200 further includes:

The third judging module is configured to judge whether the device to be charged is in a discharging state before judging whether the input voltage of the external power supply is within a preset voltage range;

The first determining module 201 is further configured to determine whether the input voltage of the external power supply is within a preset voltage range when no device to be charged is in a discharge state.

In an alternative embodiment, the second determining module 204 includes:

A first determining sub-module configured to determine a change-over switch sub-module 51 electrically connected to the device to be charged according to a connection state of the charging module to the device to be charged;

The first opening sub-module is configured to open the switch sub-module 51 electrically connected to the device to be charged, so as to enable the charging interface to be conducted with the corresponding device to be charged.

In an alternative embodiment, the charging information further includes: the residual electric quantity of the device to be charged is electrically connected with the charging module;

The second judging module 204 further includes:

The second determining submodule is configured to determine a device to be charged, which needs to be charged, in the devices to be charged, which are electrically connected with the charging module, according to the residual electric quantity of the devices to be charged, which are electrically connected with the charging module;

the second opening sub-module is configured to open the switch sub-module 51 corresponding to the device to be charged, so as to enable the charging interface to be conducted with the corresponding device to be charged.

In an alternative embodiment, the charge control module 206 includes:

The third determining submodule is configured to determine the number of the charging modules conducted with the charging interface and record N as a natural number;

The acquisition submodule is configured to acquire Vn when n=1, wherein the Vn is the working voltage of an nth device to be charged in the devices to be charged electrically connected with the charging module;

A first determination submodule configured to determine whether Vn is less than a first threshold voltage;

the first control submodule is configured to control a device to be charged corresponding to the Vn to enter a precharge mode for charging when the Vn is smaller than a first threshold voltage;

an update sub-module configured to add 1 to n to update n;

a second judging sub-module configured to judge whether the updated N is less than or equal to N;

The first execution sub-module is configured to execute the first judgment sub-module when the updated N is smaller than or equal to N;

A second execution sub-module configured to execute the first determination module 201, or execute the acquisition module 203, or execute the second determination module 204, or execute the acquisition sub-module when the updated N is greater than N;

a third determination sub-module configured to determine whether Vn is less than or equal to a second threshold voltage, which is greater than the first threshold voltage, when Vn is not less than the first threshold voltage;

the second control submodule is configured to control the device to be charged corresponding to the Vn to enter a constant-current charging mode for charging when the Vn is smaller than or equal to a second threshold voltage, and execute the updating submodule;

A fourth determination sub-module configured to determine whether Vn is less than a third threshold voltage, the third threshold voltage being greater than the second threshold voltage, when Vn is greater than the second threshold voltage;

The third control sub-module is configured to control the device to be charged corresponding to the Vn to enter a constant voltage charging mode for charging when the Vn is smaller than a third threshold voltage, and execute the updating sub-module;

and a disconnection sub-module configured to disconnect the change-over switch sub-module 51 electrically connected to the device to be charged corresponding to Vn and to perform the update sub-module when Vn is not less than the third threshold voltage.

In an alternative embodiment, each charging module corresponds to a unique identification character. The charging system 200 further includes:

A second obtaining module 203 configured to obtain an identification character corresponding to a charging module electrically connected to the device to be charged;

the first storage module is configured to store identification characters corresponding to the charging module electrically connected with the device to be charged in a first storage column, and order the identification characters in the first storage column;

the determining module is configured to determine the arrangement sequence of the devices to be charged according to the arrangement sequence of the identification characters in the first storage column;

the charging control module 206 is further configured to sequentially detect the operating voltages of the devices to be charged according to the arrangement sequence of the devices to be charged, and sequentially control the devices to be charged to enter different charging modes according to the operating voltages of the devices to be charged to perform charging.

In an alternative embodiment, each charging module corresponds to a unique identification character;

The system further comprises:

a third obtaining module 203 configured to obtain an identification character of each charging module;

The second storage module is configured to store the identification characters of each charging module in the first storage column respectively and sort the identification characters in the first storage column;

A third storage module configured to store a connection state of each of the charge and discharge modules 5 and the battery pack in a second storage column;

wherein, the connection state of each charge-discharge module 5 and the battery pack corresponds to the corresponding identification character;

the charging control module 206 is configured to sequentially detect the working voltages of the corresponding devices to be charged according to the information stored in the first storage column and the second storage column, and sequentially control the devices to be charged to enter different charging modes according to the working voltages of the devices to be charged to perform charging.

In an alternative embodiment, the charging system 200 further includes:

The fourth judging module is configured to judge whether the connection state of the charging module and the device to be charged is changed according to the detected connection state of the charging module and the device to be charged when the updated N is larger than N;

and the adjusting module is configured to adjust the information stored in the first storage column or/and the information stored in the second storage column when the connection state of the charging module and the device to be charged is changed.

In a fifth aspect, in connection with fig. 7, the present embodiment provides a discharging method, where the discharging method is applied to any multi-battery discharging device having a discharging function, and in the present embodiment, the multi-battery discharging device is a multi-battery pack charging and discharging device in the first aspect. The discharging interface in the discharging device of the multi-battery is a charging and discharging interface 3 in the charging and discharging device of the multi-battery pack; the discharging module in the discharging device of the multi-battery is the charging and discharging module 5 in the charging and discharging device of the multi-battery pack; the discharging information is the charging and discharging information in the multi-point battery charging and discharging device; the discharging method is controlled and realized by the micro-control sub-module 12.

The discharging method includes steps S301 to S304:

step S301: the state of the discharge module is detected.

Step S302: according to the state of the discharge module, obtaining discharge information, wherein the discharge information comprises: and the connection state of the discharging module and the battery pack.

Step S303: and determining a discharging battery pack for discharging in at least one battery pack according to the discharging information, and opening a change-over switch sub-module 51 corresponding to the discharging battery pack so as to discharge the discharging battery pack.

Wherein said determining a discharge battery pack for discharging from at least one battery pack based on said discharge information comprises: determining a discharging module electrically connected with the battery pack according to the discharging information; according to the working voltage of the battery pack electrically connected with the discharging module and the power supply requirement of the electric equipment, a discharging battery pack meeting the power supply requirement of the electric equipment is selected from the battery packs electrically connected with the discharging module. The power supply requirement of the electric equipment is determined by the specification of the electric equipment, and is not limited in this embodiment.

In an alternative embodiment, before said determining a discharge battery pack for discharging in at least one battery pack according to said discharge information, said discharging method further comprises: and judging whether the discharging device is in a charging state.

The determining a discharging battery pack for discharging in at least one battery pack according to the discharging information comprises the following steps: and determining a discharging battery pack for discharging in at least one battery pack according to the discharging information when the discharging device is not in a charging state.

By judging whether the discharging device is in the charging state or not, the phenomenon that the electric equipment is discharged when the battery pack in the discharging device is in the charging state can be avoided, and therefore the service life of the battery pack can be prolonged.

In an alternative embodiment, the determining whether the discharging device is in a charging state includes: judging whether the discharge interface has an input voltage or not; when the input voltage exists in the discharge interface, judging whether an OTG mode of the discharge device is started, and if so, not keeping the discharge device in a charging state.

Step S304: and judging whether the discharging battery pack needs to be replaced to continue discharging, if so, replacing the discharging battery pack to continue discharging until the discharging battery pack does not exist in the at least one battery pack, or stopping discharging of the discharging device until the discharging is completed.

According to the discharging method, the state of the discharging module is determined, so that the discharging module which is electrically connected with the battery pack in the plurality of discharging modules can be rapidly identified, and the battery pack can conveniently and rapidly charge electric equipment through the corresponding discharging module; and through confirming the battery package that discharges, can be convenient for with the battery package electricity be connected the automatic electric equipment that charges of quick stable orderly of module, so not only further improved the efficiency that charges to the electric equipment, avoided the battery package to cross the emergence of putting the phenomenon simultaneously to discharge the security of device has been improved.

In an alternative embodiment, the discharging method further comprises:

when the working voltage of the battery pack n is greater than or equal to the fourth threshold voltage, turning on the switch sub-module 51 corresponding to the battery pack n, and turning off other switch sub-modules 51;

When the working voltage of the battery pack n is greater than or equal to the fifth threshold voltage, judging whether the switch sub-module 51 corresponding to the battery pack n is turned on, if so, executing the step of judging whether the working current of the battery pack n is less than or equal to the threshold current, if not, executing the step of turning on the switch sub-module 51 corresponding to the battery pack n and turning off other switch sub-modules 51;

Wherein the magnitudes of the threshold current, the fourth threshold voltage, and the fifth threshold voltage are determined by the specifications of the battery pack. In this embodiment, the fifth threshold voltage is the fourth threshold voltage, and the magnitudes of the threshold current and the fourth threshold are not limited in this embodiment.

By comparing the working current of the battery pack n with the threshold current, it can be determined whether the output of the discharging device has a load, that is, when the discharging current of the battery pack n is smaller than the threshold current, the control module 1 determines that the output of the discharging device has no load, thereby closing the output of the discharging device to reduce the loss of the battery pack.

Through comparing the working voltage of the battery pack n with the fifth threshold voltage, the phenomenon of overdischarge of the battery pack n can be prevented, so that the service life of the battery pack can be ensured, the occurrence of safety accidents is prevented, and the safety of the discharging device is further improved.

In addition, when the updated n is less than or equal to R, the step of determining whether the operating voltage of the battery pack n is greater than or equal to the fifth threshold voltage is performed, so that the operating voltage of the replaced discharge battery pack can be determined after the discharge battery pack is replaced, and when the requirements are not met, the replacement of other discharge battery packs can be quickly continued without performing the step of opening the switch sub-module 51 corresponding to the replaced battery pack and determining whether the operating current of the replaced discharge battery pack is less than or equal to the threshold current, thereby not only saving the power consumption of the discharge device, but also improving the discharge efficiency of the discharge device.

In an alternative embodiment, each discharge module is provided with a unique identification character. The step of obtaining the discharge information according to the state of the discharge module comprises the following steps: judging whether a discharging module electrically connected with the battery pack exists or not; when a discharging module electrically connected with the battery pack exists, storing identification characters corresponding to the discharging module electrically connected with the battery pack in a control list; and determining a discharging module electrically connected with the battery pack according to the identification characters stored in the control list.

The determining the number of the discharging modules electrically connected with the battery pack according to the discharging information comprises the following steps: and determining the number of discharge modules electrically connected with the battery pack according to the number of the identification characters stored in the control list.

Through storing the identification character that corresponds with the discharge module that the battery package electricity is connected in control list, not only be convenient for discharge device discern the battery package that different discharge modules are electric to be connected, can also be simultaneously discharge device stable orderly control discharge battery package and discharge, not only further improved the efficiency that charges to the consumer, still avoided the emergence of battery package overdischarge phenomenon simultaneously to discharge device's security has been improved.

In a sixth aspect, in combination with fig. 8, the present embodiment provides, based on the content of the fifth aspect, a discharging method applied to the multi-battery pack charge-discharge device in the first aspect. In this embodiment, the multi-battery pack charging and discharging device is a charger containing a plurality of battery packs.

The discharging method comprises the following steps:

First, the discharge device is prepared to enter a discharge state by receiving a discharge trigger signal transmitted by pressing the discharge switch 2.

And then judging whether the input of the discharging device has voltage, if so, continuously judging whether all the discharging modules are in an OTG mode, if not, proving that the input voltage of the discharging device exists, and the discharging device is in a charging state, so that the discharging device can not discharge in the OTG mode, and ending the discharging. If the OTG mode is adopted, the current discharging device is in a discharging state, and the discharging method proceeds to the next step to judge the working voltage of the battery pack. If the input of the discharging device has no voltage, the next step is to judge the voltage of the battery pack. Before judging the voltage of the battery packs, the number of the battery packs electrically connected with the discharging module needs to be determined, and the battery packs electrically connected with the discharging module are ordered so as to control the orderly discharging of the battery packs electrically connected with the discharging module.

Then, judging whether the working voltage V of the battery pack 1 is greater than a fourth threshold voltage V0, if so, controlling the battery pack 1 to discharge, specifically, opening the corresponding switch sub-module 51S1 of the battery pack 1 and closing other switch sub-modules 51; if not, it is determined whether the operating voltage V of the battery pack 2 is greater than the fourth threshold voltage V0, and if so, the battery pack 2 is controlled to discharge, specifically, the switch sub-module 51S2 corresponding to the battery pack 2 is turned on, and other switches are turned off.

And finally, judging whether the working current I of the battery pack n is smaller than or equal to the threshold current I1, if not, entering the next step to continuously judge the working voltage of the battery pack n+1, and ending discharging after the last battery pack is discharged according to the flow of the step of coating. If the working current I of the battery pack n is less than or equal to the threshold current I1, the control module 1 confirms that the output of the discharging device is not loaded, and controls the output of the discharging device to be closed so as to reduce the loss of the battery pack.

Wherein sequencing the battery packs comprises: and storing the identification characters corresponding to the charging modules electrically connected with the battery packs in a first storage column and sequencing. The discharging method further comprises the following steps: determining the arrangement sequence of the battery packs according to the arrangement sequence of the identification characters in the first storage column, for example: battery pack 1, battery packs 2, … …, and battery pack n, n being a positive integer.

In a seventh aspect, in conjunction with fig. 9, the present embodiment provides a discharging system 400, where the system is applied to any multi-battery charging device with a discharging function, and in the present embodiment, the multi-battery charging device is a multi-battery pack charging and discharging device in the first aspect. The discharging interface in the discharging device of the multi-battery is a charging and discharging interface 3 in the charging and discharging device of the multi-battery pack; the discharging module in the discharging device of the multi-battery is the charging and discharging module 5 in the charging and discharging device of the multi-battery pack; the discharging information is the charging and discharging information in the multi-point battery charging and discharging device; the discharging method is controlled and realized by the micro-control sub-module 12.

The discharge system 400 includes:

a discharge detection module 401 configured to detect a state of the discharge module;

The discharge acquisition module 402 is configured to acquire discharge information according to a state of the discharge module, where the discharge information includes: the connection state of the discharging module and the battery pack;

a discharging determining module 403, configured to determine a discharging battery pack for discharging from at least one battery pack according to the discharging information, and open a switch sub-module 51 corresponding to the discharging battery pack, so as to make the discharging battery pack discharge;

a first discharge judgment module 404 configured to judge whether the discharge battery pack needs to be replaced to continue discharging;

And a discharging replacing module 405 configured to replace the discharging battery pack to continue discharging until the discharging battery pack does not exist in the at least one battery pack or until the discharging is completed, and stopping the discharging of the discharging device when the discharging battery pack needs to be replaced to continue discharging.

The discharge determination module 403 includes: a discharge information determination sub-module configured to determine a discharge module electrically connected to the battery pack according to the discharge information; the selecting sub-module is configured to select a discharging battery pack meeting the power supply requirement of the electric equipment from the battery packs electrically connected with the discharging module according to the working voltage of the battery packs electrically connected with the discharging module and the power supply requirement of the electric equipment.

In an alternative embodiment, the discharge system 400 further includes:

the discharging determining module 403 is further configured to determine a discharging battery pack for discharging from among at least one battery pack according to the discharging information when the discharging device is not in a charged state.

In an alternative embodiment, the second discharge judgment module includes:

In an alternative embodiment, the discharge system 400 further includes:

The discharge confirmation module includes:

The discharging switch control sub-module is configured to turn on the switch sub-module 51 corresponding to the battery pack n and turn off the other switch sub-modules 51;

a discharge update sub-module configured to add 1 to n to update n;

a seventh discharging judgment sub-module configured to judge whether the switch sub-module 51 corresponding to the battery pack n is turned on or not when the operating voltage of the battery pack n is greater than or equal to a fifth threshold voltage;

a fifth discharge execution sub-module configured to execute the fourth discharge judgment sub-module when the change-over switch sub-module 51 corresponding to the battery pack n is turned on;

A sixth discharging execution sub-module configured to execute the discharging switch control sub-module when the change-over switch sub-module 51 corresponding to the battery pack n is not turned on;

In an alternative embodiment, each discharge module is provided with a unique identification character.

The discharge acquisition module 402 includes:

The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present invention should be included in the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A discharge method, wherein the discharge method is applied to a discharge device, the discharge device comprising: the device comprises a control module, a discharge interface and at least one discharge module;

the discharging method comprises the following steps:

detecting the state of a discharge module;

The determining a discharging battery pack for discharging in at least one battery pack according to the discharging information, and opening a change-over switch sub-module corresponding to the discharging battery pack, comprises: when the discharging device is not in a charging state, determining a discharging battery pack for discharging in at least one battery pack according to the discharging information, and opening a change-over switch sub-module corresponding to the discharging battery pack so as to enable the discharging battery pack to discharge;

When the discharging device is not in a charging state, determining a discharging battery pack for discharging in at least one battery pack according to the discharging information, and opening a change-over switch sub-module corresponding to the discharging battery pack to enable the discharging battery pack to discharge, wherein the method comprises the following steps: when an OTG mode of the discharging device is started or no input voltage exists in the discharging interface, n=1 is caused, and whether the working voltage of a battery pack n is larger than or equal to a fourth threshold voltage is judged, wherein the battery pack n is a discharging battery pack for discharging the nth battery pack in the at least one battery pack; when the working voltage of the battery pack n is greater than or equal to the fourth threshold voltage, starting a switch sub-module corresponding to the battery pack n, and closing other switch sub-modules; judging whether the working current of the battery pack n is smaller than or equal to a threshold current; when the working current of the battery pack n is larger than a threshold current, judging whether the working voltage of the battery pack n is larger than or equal to a fifth threshold voltage, wherein the fifth threshold voltage comprises a fourth threshold voltage; when the working voltage of the battery pack n is smaller than the fifth threshold voltage, adding 1 to n to update n; judging whether the updated n is smaller than or equal to R, if so, executing the step of judging whether the working voltage of the battery pack n is larger than or equal to a fifth threshold voltage; when the updated n is larger than R, or when the working current of the battery pack n is smaller than or equal to the threshold current, the discharging device is turned off; when the working voltage of the battery pack n is greater than or equal to a fifth threshold voltage, judging whether a switch sub-module corresponding to the battery pack n is started, if so, executing the step of judging whether the working current of the battery pack n is less than or equal to the threshold current, if not, executing the step of starting the switch sub-module corresponding to the battery pack n and closing other switch sub-modules; executing the step of adding 1 to n when the operating voltage of the battery pack n is smaller than a fourth threshold voltage;

2. The discharge method of claim 1, wherein the discharge module further comprises: a charge-discharge electronic module;

The discharging method further comprises the following steps:

and judging whether the discharging device is in a charging state.

3. The discharge method according to claim 2, wherein the determining whether the discharge device is in a charged state includes:

judging whether the discharge interface has an input voltage or not;

4. The discharge method of claim 1, wherein each discharge module is provided with a unique identification character;

5. A discharge system, wherein the discharge system is applied to a discharge device, the discharge device comprising: the device comprises a control module, a discharge interface and at least one discharge module;

The discharge system includes:

the discharge determination module includes:

A first discharge execution sub-module configured to execute a discharge switch control sub-module when an operating voltage of the battery pack n is greater than or equal to a fourth threshold voltage;

a seventh discharge execution sub-module configured to execute the operation of adding 1 to n in the third discharge execution sub-module and execute the sixth discharge judgment sub-module when the operating voltage of the battery pack n is less than a fourth threshold voltage;

6. The discharge system of claim 5, wherein the discharge module further comprises: a charge-discharge electronic module;

The discharge system further includes:

And a second discharge judgment module configured to judge whether the discharge device is in a charged state.

7. The discharge system of claim 6, wherein the second discharge determination module comprises:

8. The discharge system of claim 5, wherein each discharge module is provided with a unique identification character;

the discharge acquisition module includes: