CN117559588A - Charging device and charging method - Google Patents

Charging device and charging method Download PDF

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Publication number
CN117559588A
CN117559588A CN202311477120.6A CN202311477120A CN117559588A CN 117559588 A CN117559588 A CN 117559588A CN 202311477120 A CN202311477120 A CN 202311477120A CN 117559588 A CN117559588 A CN 117559588A
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CN
China
Prior art keywords
module
electric energy
switch
unit
switch unit
Prior art date
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Pending
Application number
CN202311477120.6A
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Chinese (zh)
Inventor
黄秋瑜
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Vivo Mobile Communication Co Ltd
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Vivo Mobile Communication Co Ltd
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Filing date
Publication date
Application filed by Vivo Mobile Communication Co Ltd filed Critical Vivo Mobile Communication Co Ltd
Priority to CN202311477120.6A priority Critical patent/CN117559588A/en
Publication of CN117559588A publication Critical patent/CN117559588A/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
    • H02J7/007184—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage in response to battery voltage gradient
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling

Abstract

The application discloses charging equipment and a charging method, and belongs to the technical field of batteries. The charging device includes: the device comprises an electric energy supply module, a leakage inductance energy absorption module, an electric energy output module and a switch module, wherein the first end of the electric energy supply module is respectively connected with the first end of the leakage inductance energy absorption module and the first end of the electric energy output module; the second end of the electric energy supply module, the second end of the leakage inductance energy absorption module and the second end of the switch module are grounded; the third end of the leakage inductance energy absorbing module is respectively connected with the second end of the electric energy output module and the first end of the switch module; the third end of the electric energy output module and the fourth end of the electric energy output module are respectively connected with two ends of the battery.

Description

Charging device and charging method
Technical Field
The application belongs to the technical field of batteries, and particularly relates to charging equipment and a charging method.
Background
A charging device is a device capable of providing electrical energy to a battery. When the charging device charges the battery, leakage inductance can be generated due to the fact that the primary coil and the secondary coil of the transformer in the charging device are not 100% coupled. The presence of leakage inductance may damage the switching tube in the charging device, thereby damaging the charging device.
In the related art, a resistor-capacitor-diode (RCD) absorption circuit is generally used to absorb leakage inductance energy. RCD absorption Circuit As shown in FIG. 1, the RCD absorption circuit absorbs leakage inductance energy I of the transformer T through the diode D when absorbing leakage inductance energy k Stored on the capacitor C, and dissipated leakage inductance energy I through the resistor R k And the damage of the switching tube Q is avoided. However, byThe leakage inductance energy is consumed by the resistor and is not utilized, so that the charging efficiency is lower.
Disclosure of Invention
An object of the embodiment of the application is to provide a charging device and a charging method, which can solve the problem of low charging efficiency.
In a first aspect, an embodiment of the present application provides a charging device, including: the device comprises an electric energy supply module, a leakage inductance energy absorption module, an electric energy output module and a switch module, wherein,
the first end of the electric energy supply module is respectively connected with the first end of the leakage inductance energy absorption module and the first end of the electric energy output module;
the second end of the electric energy supply module, the second end of the leakage inductance energy absorption module and the second end of the switch module are grounded;
the third end of the leakage inductance energy absorbing module is respectively connected with the second end of the electric energy output module and the first end of the switch module;
the third end of the electric energy output module and the fourth end of the electric energy output module are respectively connected with two ends of the battery.
In a second aspect, an embodiment of the present application provides a charging method, which is applied to the charging device provided in the first aspect of the embodiment of the present application, where the charging method includes:
in the first stage, the charging control module controls the switch module to be turned on, the first switch unit and the second switch unit to be turned off, and the electric energy provided by the electric energy providing module charges the battery through the electric energy output module;
in the second stage, the charging control module controls the switch module and the first switch unit to be turned off, the second switch unit to be turned on, and the capacitor unit absorbs leakage inductance electric energy of the electric energy output module;
in the third stage, the charging control module controls the switch module and the first switch unit to be conducted, the second switch unit to be turned off, and leakage inductance electric energy provided by the capacitor unit and electric energy provided by the electric energy providing module charge the battery through the electric energy output module.
In the embodiment of the application, the charging equipment comprises an electric energy providing module, a leakage inductance energy absorbing module, an electric energy output module and a switch module, wherein the first end of the electric energy providing module is respectively connected with the first end of the leakage inductance energy absorbing module and the first end of the electric energy output module; the second end of the electric energy supply module, the second end of the leakage inductance energy absorption module and the second end of the switch module are grounded; the third end of the leakage inductance energy absorbing module is respectively connected with the second end of the electric energy output module and the first end of the switch module; the third end of the electric energy output module and the fourth end of the electric energy output module are respectively connected with two ends of the battery. Thus, the leakage inductance energy absorbing module can absorb and store the leakage inductance energy of the electric energy output module and reuse the leakage inductance energy to charge the battery, the leakage inductance energy is not lost, and the charging efficiency can be provided.
Drawings
FIG. 1 is a schematic diagram of an RCD absorber circuit provided in the related art;
fig. 2 is a schematic diagram of a first structure of a charging device according to an embodiment of the present application;
fig. 3 is a schematic diagram of a second structure of the charging device according to the embodiment of the present application;
fig. 4 is a schematic view of a third structure of the charging device provided in the embodiment of the present application;
fig. 5 is a schematic view of a fourth configuration of a charging device provided in an embodiment of the present application;
fig. 6 is a schematic flow chart of a charging method according to an embodiment of the present application.
Detailed Description
Technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application are within the scope of the protection of the present application.
The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or otherwise described herein, and that the objects identified by "first," "second," etc. are generally of a type and do not limit the number of objects, for example, the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.
The charging device, the charging method and the charging device provided by the embodiment of the application are described in detail below by means of specific embodiments and application scenes thereof with reference to the accompanying drawings.
Fig. 2 is a schematic diagram of a first configuration of a charging device according to an embodiment of the present application. The charging device 10 may include: an electric power supply module 101, a leakage inductance energy absorbing module 102, an electric power output module 103, and a switching module 104.
The first end of the power supply module 101 is connected to the first end of the leakage inductance energy absorbing module 102 and the first end of the power output module 103, respectively.
A second terminal of the power supply module 101, a second terminal of the leakage inductance energy absorbing module 102, and a second terminal of the switching module 104 are grounded.
The third terminal of the leakage inductance energy absorbing module 102 is connected to the second terminal of the electric energy output module 103 and the first terminal of the switching module 104, respectively.
The third terminal of the power output module 103 and the fourth terminal of the power output module 104 are connected to two ends of the battery, respectively.
The leakage inductance energy absorbing module 102 is used for absorbing and storing leakage inductance energy of the electric energy output module 103 and charging the battery with the leakage inductance energy.
In some possible implementations of embodiments of the present application, the power supply module 101 may include a capacitor that may continuously receive power from an external power grid while the battery is being charged.
In this application embodiment, leakage inductance energy absorption module can absorb, store the leakage inductance electric energy of electric energy output module and reuse it to charge the battery, and leakage inductance electric energy is not by the loss, can provide charging efficiency.
In some possible implementations of embodiments of the present application, the leakage inductance energy absorbing module may include a first switching unit, a second switching unit, and a capacitive unit. As shown in fig. 3, fig. 3 is a schematic diagram of a second structure of the charging device according to the embodiment of the present application.
In fig. 3, the leakage inductance energy absorbing module 102 includes a first switching unit Q1, a second switching unit Q2, and a capacitance unit C.
A first terminal of the first switching unit Q1 is connected to a second terminal of the power supply module 101; the second end of the first switch unit Q1 is connected with the first end of the second switch unit Q2 and the first end of the capacitor unit C respectively;
a second end of the second switching unit Q2 is connected to a second end of the power output module 103;
the second terminal of the capacitor unit C is connected to the first terminal of the power output module 103.
In this application embodiment, the electric capacity unit in the leakage inductance energy absorbing module can absorb, store the leakage inductance electric energy of electric energy output module and reuse it to charge the battery, and the leakage inductance electric energy is not by the loss, can provide charging efficiency.
In some possible implementations of embodiments of the present application, the charging device 10 may further include: and a charging control module. As shown in fig. 4, fig. 4 is a schematic view of a third structure of the charging device provided in the embodiment of the present application.
In fig. 4, the charging control module 105 is connected to the control terminal of the switch module 104, the control terminal of the first switch unit Q1, and the control terminal of the second switch unit Q2, respectively, and is used for controlling the on and off of the switch module 104, the first switch unit Q1, and the second switch unit Q2.
In some possible implementations of embodiments of the present application, the charge control module 104 may control the on and off of the switching module 104, the first switching unit Q1, and the second switching unit Q2 through pulse width modulation (Pulse width modulation, PWM) signals.
In some possible implementations of the embodiments of the present application, in a first stage, the charging control module outputs a first level PWM signal to the switching module, outputs a second level PWM signal to the first switching unit and the second switching unit, the first level PWM signal is used for on control, and the second level PWM signal is used for off control; in the second stage, the charging control module outputs a second level PWM signal to the switching module and the first switching unit, and outputs a first level PWM signal to the second switching unit; in the third stage, the charging control module outputs a first level PWM signal to the switching module and the first switching unit, and outputs a second level PWM signal to the second switching unit.
In some possible implementations of embodiments of the present application, the switching module 104, the first switching unit Q1, and the second switching unit Q2 may be Metal-Oxide-semiconductor field effect transistors (MOSFETs).
When the switch module 104, the first switch unit Q1 and the second switch unit Q2 are N-type MOSFETs (MOS transistors for short), the first level PWM signal is a high level PWM signal, and the second level PWM signal is a low level PWM signal; when the switch module 104, the first switch unit Q1 and the second switch unit Q2 are P-type MOS transistors, the first level PWM signal is a low level PWM signal, and the second level PWM signal is a high level PWM signal.
In some possible implementations of embodiments of the present application, the power output module 103 may include a transformer. As shown in fig. 5, fig. 5 is a schematic view of a fourth structure of the charging device provided in the embodiment of the present application.
In fig. 5, one end of the primary winding of the transformer T is connected to a first end of the leakage inductance energy absorbing module 102; the other end of the primary winding of the transformer T is connected with the third end of the leakage inductance energy absorbing module 102; both ends of the secondary winding of the transformer 1032 are connected to both ends of the battery, respectively.
In fig. 5, the switching module 104 includes a third switching unit Q3. One end of the third switching unit Q3 is connected to the other end of the primary winding of the transformer T, and the other end of the third switching unit Q3 is grounded.
In some possible implementations of embodiments of the present application, the switching module, the first switching unit, and the second switching unit in embodiments of the present application may include switching tubes. Among them, switching transistors include, but are not limited to: MOS transistors, insulated Gate Bipolar Transistors (IGBT), etc.
When the charging equipment provided by the embodiment of the application is used for charging the battery, firstly, the switch module is turned on, the first switch unit and the second switch unit are turned off, the current output by the electric energy supply module passes through the primary winding of the transformer, and the battery connected with the secondary winding is charged through the coupling of the primary winding and the secondary winding of the transformer. When the switching module and the first switching unit are turned off and the second switching unit is turned on, leakage inductance energy that is not coupled is stored in the capacitor unit through the second switching unit. When the switching module and the first switching unit are turned on, the second switching unit is turned off, leakage inductance energy stored in the capacitor unit is input to a primary winding of the transformer through the first switching unit together with electric energy provided by the electric energy providing module, and a battery connected with the secondary winding is charged through coupling of the primary winding and the secondary winding of the transformer.
Fig. 6 is a schematic flow chart of a charging method according to an embodiment of the present application. The charging method provided by the embodiment of the application is applied to the charging equipment provided by the embodiment of the application. The charging method comprises the following steps:
step 601: in the first stage, the charging control module controls the switch module to be turned on, the first switch unit and the second switch unit to be turned off, and the electric energy provided by the electric energy providing module charges the battery through the electric energy output module;
step 602: in the second stage, the charging control module controls the switch module and the first switch unit to be turned off, the second switch unit to be turned on, and the capacitor unit absorbs leakage inductance electric energy of the electric energy output module;
step 603: in the third stage, the charging control module controls the switch module and the first switch unit to be conducted, the second switch unit to be turned off, and leakage inductance electric energy provided by the capacitor unit and electric energy provided by the electric energy providing module charge the battery through the electric energy output module.
In the first stage, the switch module is turned on, the first switch unit and the second switch unit are turned off, and the current output by the electric energy supply module passes through the primary winding of the transformer and charges a battery connected with the secondary winding through the coupling of the primary winding and the secondary winding of the transformer.
In the second phase, the switching module and the first switching unit are turned off, the second switching unit is turned on, and the non-coupled leakage inductance energy is stored in the capacitor unit through the second switching unit.
In the second stage, the switching module and the first switching unit are turned on, the second switching unit is turned off, leakage inductance energy stored in the capacitor unit is input to a primary winding of the transformer together with electric energy supplied from the electric energy supply module through the first switching unit, and a battery connected with the secondary winding is charged through coupling of the primary winding and the secondary winding of the transformer.
In this application embodiment, electric capacity unit can absorb, the electric energy output module's of storage electric energy leakage inductance electric energy among the leakage inductance energy absorption module and reuse it to charge the battery, and leakage inductance electric energy is not by the loss, can provide charging efficiency.
In some possible implementations of embodiments of the present application, step 601 may include:
the charging control module outputs a first level pulse width modulation signal to the switch module, and outputs a second level pulse width modulation signal to the first switch unit and the second switch unit, wherein the first level pulse width modulation signal is used for conducting control, and the second level pulse width modulation signal is used for switching off control.
In some possible implementations of embodiments of the present application, step 602 may include:
the charging control module outputs a second level pulse width modulation signal to the switch module and the first switch unit, and outputs a first level pulse width modulation signal to the second switch unit.
In some possible implementations of embodiments of the present application, step 603 may include:
the charging control module outputs a first level pulse width modulation signal to the switch module and the first switch unit, and outputs a second level pulse width modulation signal to the second switch unit.
When the switch module, the first switch unit and the second switch unit are N-type MOS transistors, the first level PWM signal is a high level PWM signal, and the second level PWM signal is a low level PWM signal; when the switch module, the first switch unit and the second switch unit are P-type MOS transistors, the first level PWM signal is a low level PWM signal, and the second level PWM signal is a high level PWM signal.
It should be noted that, in this document, 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. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solutions of the present application may be embodied essentially or in a part contributing to the prior art in the form of a computer software product stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk), comprising several instructions for causing a terminal (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the methods described in the embodiments of the present application.
The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.

Claims (11)

1. A charging device, characterized in that the charging device comprises: the device comprises an electric energy supply module, a leakage inductance energy absorption module, an electric energy output module and a switch module, wherein,
the first end of the electric energy supply module is respectively connected with the first end of the leakage inductance energy absorption module and the first end of the electric energy output module;
a second end of the electric energy supply module, a second end of the leakage inductance energy absorption module and a second end of the switch module are grounded;
the third end of the leakage inductance energy absorbing module is respectively connected with the second end of the electric energy output module and the first end of the switch module;
and the third end of the electric energy output module and the fourth end of the electric energy output module are respectively connected with two ends of the battery.
2. The charging apparatus of claim 1, wherein the leakage inductance energy absorbing module comprises a first switching unit, a second switching unit, and a capacitance unit, wherein,
the first end of the first switch unit is connected with the second end of the electric energy supply module;
the second end of the first switch unit is connected with the first end of the second switch unit and the first end of the capacitor unit respectively;
the second end of the second switch unit is connected with the second end of the electric energy output module;
the second end of the capacitor unit is connected with the first end of the electric energy output module.
3. The charging apparatus according to claim 2, characterized in that the charging apparatus further comprises: a charge control module;
the charging control module is respectively connected with the control end of the switch module, the control end of the first switch unit and the control end of the second switch unit and used for controlling the on and off of the switch module, the first switch unit and the second switch unit.
4. The charging device according to claim 3, wherein the charging control module controls on and off of the switching module, the first switching unit, and the second switching unit by a pulse width modulation signal.
5. The charging apparatus according to claim 4, wherein,
in a first stage, the charging control module outputs a first level pulse width modulation signal to the switch module, outputs a second level pulse width modulation signal to the first switch unit and the second switch unit, wherein the first level pulse width modulation signal is used for conducting control, and the second level pulse width modulation signal is used for switching off control;
in a second stage, the charging control module outputs the second level pulse width modulation signal to the switch module and the first switch unit, and outputs the first level pulse width modulation signal to the second switch unit;
in a third stage, the charging control module outputs the first level pulse width modulation signal to the switching module and the first switching unit, and outputs the second level pulse width modulation signal to the second switching unit.
6. The charging device of claim 2, wherein the switching module, the first switching unit, and the second switching unit are metal-oxide semiconductor field effect transistors.
7. The charging apparatus of claim 1, wherein the power output module comprises a transformer;
one end of a primary winding of the transformer is connected with a first end of the leakage inductance energy absorbing module;
the other end of the primary winding of the transformer is connected with the third end of the leakage inductance energy absorbing module;
and two ends of a secondary winding of the transformer are respectively connected with two ends of the battery.
8. A charging method, characterized in that the method is applied to the charging apparatus of claim 3, the method comprising:
in a first stage, the charging control module controls the switch module to be turned on, the first switch unit and the second switch unit to be turned off, and the electric energy provided by the electric energy providing module charges the battery through the electric energy output module;
in the second stage, the charging control module controls the switch module and the first switch unit to be turned off, and the second switch unit to be turned on, and the capacitor unit absorbs leakage inductance electric energy of the electric energy output module;
in the third stage, the charging control module controls the switch module and the first switch unit to be turned on, and the second switch unit to be turned off, and the leakage inductance electric energy provided by the capacitor unit and the electric energy provided by the electric energy providing module charge the battery through the electric energy output module.
9. The method of claim 8, wherein the charge control module controlling the switching module to be on, the first switching unit and the second switching unit to be off comprises:
the charging control module outputs a first level pulse width modulation signal to the switch module, and outputs a second level pulse width modulation signal to the first switch unit and the second switch unit, wherein the first level pulse width modulation signal is used for conducting control, and the second level pulse width modulation signal is used for switching off control.
10. The method of claim 9, wherein the charge control module controlling the switching module and the first switching unit to be off and the second switching unit to be on comprises:
the charging control module outputs the second level pulse width modulation signal to the switch module and the first switch unit, and outputs the first level pulse width modulation signal to the second switch unit.
11. The method of claim 9, wherein the charge control module controlling the switching module and the first switching unit to be on and the second switching unit to be off comprises:
the charging control module outputs the first level pulse width modulation signal to the switch module and the first switch unit, and outputs the second level pulse width modulation signal to the second switch unit.
CN202311477120.6A 2023-11-07 2023-11-07 Charging device and charging method Pending CN117559588A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311477120.6A CN117559588A (en) 2023-11-07 2023-11-07 Charging device and charging method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311477120.6A CN117559588A (en) 2023-11-07 2023-11-07 Charging device and charging method

Publications (1)

Publication Number Publication Date
CN117559588A true CN117559588A (en) 2024-02-13

Family

ID=89822477

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311477120.6A Pending CN117559588A (en) 2023-11-07 2023-11-07 Charging device and charging method

Country Status (1)

Country Link
CN (1) CN117559588A (en)

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