CN112865206A - Charging circuit and electronic device - Google Patents
Charging circuit and electronic device Download PDFInfo
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- CN112865206A CN112865206A CN201911171885.0A CN201911171885A CN112865206A CN 112865206 A CN112865206 A CN 112865206A CN 201911171885 A CN201911171885 A CN 201911171885A CN 112865206 A CN112865206 A CN 112865206A
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- battery
- charging
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- 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
- H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
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- 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
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
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- 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
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The present disclosure relates to a charging circuit and an electronic device. The charging circuit includes: the interface module is used for being connected with an external charging end; the charging device comprises a plurality of batteries and a plurality of charging sub-circuits, wherein the charging sub-circuits are connected to the interface module in parallel, each charging sub-circuit is connected with one or more batteries in series, and each charging sub-circuit comprises a charging module, a switch assembly and a preset resistor connected with the switch assembly in parallel; the battery management chip is connected with the plurality of charging sub-circuits and is used for controlling the on-off state of the switch assembly so as to adjust the charging current on the charging sub-circuits.
Description
Technical Field
The present disclosure relates to the field of terminal technologies, and in particular, to a charging circuit and an electronic device.
Background
At present, along with the function of the intelligent terminal is gradually powerful, the power consumption of the intelligent terminal is correspondingly increased. Therefore, in order to satisfy the power consumption of the intelligent terminal and extend the endurance time of the intelligent terminal, a plurality of batteries have been configured on some intelligent terminals to increase the battery capacity. However, increasing the number of batteries in turn poses new challenges for the manner of charging the batteries and the efficiency of the charging.
Disclosure of Invention
The present disclosure provides a charging circuit and an electronic device to solve the disadvantages of the related art.
According to a first aspect of the embodiments of the present disclosure, there is provided a charging circuit, including:
the interface module is used for being connected with an external charging end;
the charging device comprises a plurality of batteries and a plurality of charging sub-circuits, wherein the charging sub-circuits are connected to the interface module in parallel, each charging sub-circuit is connected with one or more batteries in series, and each charging sub-circuit comprises a charging module, a switch assembly and a preset resistor connected with the switch assembly in parallel;
the battery management chip is connected with the plurality of charging sub-circuits and is used for controlling the on-off state of the switch assembly so as to adjust the charging current on the charging sub-circuits.
Optionally, the battery management chip is configured to control an on-off state of the switch assembly according to the remaining power of the plurality of batteries.
Optionally, the plurality of batteries includes a first battery and a second battery, the plurality of charging sub-circuits includes a first charging sub-circuit connected to the first battery and a second charging sub-circuit connected to the second battery, and the first charging sub-circuit and the second charging sub-circuit are connected to the interface module in parallel;
the first charging sub-circuit comprises a first charging module, a first switch connected with the first charging module and a first preset resistor connected with the first switch in parallel;
the second charging sub-circuit comprises a second charging module, a second switch connected with the second charging module and a second preset resistor connected with the second switch in parallel.
Optionally, when the remaining power of the first battery and the remaining power of the second battery are both lower than a first preset value, the battery management chip controls the first switch to be switched to the closed state and the second switch to be switched to the open state, so that the charging current input to the first battery is greater than the charging current input to the second battery;
when the electric quantity of the first battery reaches a first preset percentage of the total capacity of the first battery, the battery management chip controls the first switch to be switched to the open state and the second switch to be switched to the closed state, so that the charging current input into the first battery is smaller than the charging current input into the second battery.
Optionally, when the remaining power of the first battery and the remaining power of the second battery are both lower than a first preset value, the battery management chip controls the first switch to be switched to the closed state and the second switch to be switched to the open state, so that the charging current input to the first battery is greater than the charging current input to the second battery;
when the voltage of the first battery reaches a first preset voltage, the battery management chip controls the first switch to be switched to an open state and the second switch to be switched to a closed state, so that the charging current input into the first battery is smaller than the charging current input into the second battery.
Optionally, when the electric quantities of the first battery and the second battery both reach a second preset percentage corresponding to the battery capacity, or the voltages of the first battery and the second battery both reach a second preset voltage, the battery management chip controls the first switch and the second switch to be switched to the closed state.
Optionally, when the remaining power of the first battery and the remaining power of the second battery are both higher than a second preset value, the battery management chip controls the first switch and the second switch to be switched to a closed state.
Optionally, when one of the first battery and the second battery is in a power supply state, the battery management chip controls the switch component corresponding to the power supply battery to switch to a closed state, and the switch component corresponding to the other battery switches to an open state.
Optionally, the resistance value of the first preset resistor and the resistance value of the second preset resistor are related to the internal resistance of the first battery, the internal resistance of the second battery, the maximum charging rate of the first battery, and the maximum charging rate of the second battery.
According to a second aspect of the embodiments of the present disclosure, there is provided an electronic device including the charging circuit according to any one of the embodiments described above.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
according to the embodiment, the multiple parallel charging electronic circuits are provided in the disclosure, the batteries connected in series with the charging electronic circuits are charged through each charging electronic circuit, the charging current on each charging electronic circuit can be adjusted through the battery management chip, large-current charging is favorably carried out on one or more batteries in a targeted manner, and small-current charging is favorably carried out on other batteries, so that the charging process is more consistent with the charging characteristic curve of the batteries, the charging efficiency is favorably improved, and the charging time is shortened.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a schematic diagram illustrating a charging circuit according to an exemplary embodiment.
Fig. 2 is a schematic diagram illustrating another charging circuit configuration according to an example embodiment.
Fig. 3 is a state diagram of a charging circuit shown in accordance with an exemplary embodiment.
Fig. 4 is a schematic diagram illustrating another state of a charging circuit in accordance with an exemplary embodiment.
Fig. 5 is a schematic diagram illustrating yet another state of a charging circuit in accordance with an exemplary embodiment.
Fig. 6 is a schematic structural diagram of an electronic device according to an exemplary embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
Fig. 1 is a schematic diagram illustrating a charging circuit 100 according to an exemplary embodiment. As shown in fig. 1, the charging circuit 100 may include an interface module 1, a plurality of charging sub-circuits 2, a plurality of batteries 3, and a battery management chip 4. The interface module 1 is configured to be connected to an external charging terminal, and the interface module 1 may include a microsusb interface, a TypeC interface, or a Lighting interface, which is not limited in this disclosure. The plurality of charging sub-circuits are connected in parallel to the interface module 1, and each charging sub-circuit is connected in series with one or more batteries, so that the electrical signal output by the interface module 1 can be multiplexed to each charging sub-circuit, thereby charging the batteries connected in series with each charging sub-circuit.
For example, as shown in fig. 1, the plurality of batteries 3 may include a first battery 31 and a second battery 32, the plurality of charging sub-circuits 2 may include a first charging sub-circuit 21 and a second charging sub-circuit 22, the first charging sub-circuit 21 and the second charging sub-circuit 22 are connected to the interface module 1 in parallel, and the first charging sub-circuit 21 is connected in series with the first battery 31 and the second charging sub-circuit 22 is connected in series with the second battery 32. Or, in another case, as shown in fig. 2, the plurality of batteries 3 may further include a third battery 33, the first charging sub-circuit 21 is connected in series with the first battery 31 and the second battery 32, and the second charging sub-circuit 22 is connected in series with the third battery 33. Of course, only the first charging sub-circuit 21 and the second charging sub-circuit 22 are taken as an example for illustration, in other embodiments, three or more charging sub-circuits may be included, and each charging sub-circuit may be connected in series with one or more batteries, which is not limited in this disclosure.
Further, each charging sub-circuit may further include a charging module, a switch component and a preset resistor connected in parallel with the switch component, the battery management chip 4 is connected to the plurality of charging sub-circuits, and the battery management chip 4 may be configured to control the switch state of the switch component, so as to adjust the charging current on the charging sub-circuits, that is, adjust the charging current input to the batteries connected in series with each charging sub-circuit. For example, still referring to fig. 1 and fig. 2, the first charging sub-circuit 21 may include a first charging module 211, a first switch 212, and a first preset resistor 213, and the second charging sub-circuit 22 may include a second charging module 221, a second switch 222, and a second preset resistor 223, where each charging sub-circuit includes only one preset resistor for illustration, and in other embodiments, each charging sub-circuit may also include a plurality of preset resistors, which is not limited by the disclosure.
According to the embodiment, the plurality of parallel charging electronic circuits are provided in the disclosure, the batteries connected with the charging electronic circuits in series are charged through each charging electronic circuit, and the charging current on each charging electronic circuit can be adjusted through the battery management chip 4, so that the large-current charging and the small-current charging of other batteries can be favorably carried out on one or more batteries in a targeted manner, the charging process is more consistent with the charging characteristic curve of the batteries, the charging efficiency is favorably improved, and the charging time is shortened.
In each of the above embodiments, the battery management chip 4 may control the on-off state of the switch assembly according to the remaining capacity of the plurality of batteries, thereby facilitating the charging of the battery with low remaining energy by a large current and the charging of the battery with high remaining capacity by a small current, and sufficiently utilizing the charging power of the external charging terminal to improve the charging efficiency. Specifically, the first charging sub-circuit 1, the second sub-circuit 22, the first battery 31, and the second battery 32 included in fig. 1 are taken as an example for explanation:
in an embodiment, when the remaining power of the first battery 31 and the second battery 32 is lower than the first preset value, the battery management chip 4 may control the first switch 212 to switch to the closed state and the second switch 222 to switch to the open state, that is, the charging circuit 100 switches to the state shown in fig. 3, at this time, the external charging terminal may maintain the maximum charging power to be input to the interface module 11, and the charging current input to the first battery 31 is greater than the charging current input to the second battery 32; when the electric quantity of the first battery 31 reaches the first preset percentage of the capacity of the first battery 31, the battery management chip 4 may control the first switch 212 to switch to the open state and the second switch 222 to switch to the closed state, that is, the charging circuit 100 switches to the state shown in fig. 4, at this time, the external charging terminal may still maintain the maximum charging power to be input to the interface module 11, and the charging current input to the second battery 32 is greater than the charging current input to the first battery 31. Therefore, the time length of the maximum output power of the external charging end can be prolonged, and the charging time length is favorably shortened.
For example, the first preset value may be a percentage value of the total electric quantity of the battery, for example, when the remaining electric quantities of the first battery 31 and the second battery 32 are both lower than 30% of the respective battery capacities, it may be considered that the first battery 31 and the second battery 32 can be charged by large current in a segmented manner, so as to improve the charging efficiency. In this embodiment, the first battery 31 is charged with a large current and then the second battery 32 is charged with a large current, but in other embodiments, the second battery 32 may be charged with a large current and then the first battery 31 may be charged with a large current, and the present disclosure is not limited thereto.
In another embodiment, still referring to fig. 3 and 4, when the remaining power of the first battery 31 and the second battery 32 are both lower than the first preset value, the battery management chip 4 may control the first switch 212 to switch to the closed state and the second switch 222 to switch to the open state, that is, the charging circuit 100 switches to the state shown in fig. 3, at this time, the external charging terminal may maintain the maximum charging power to be input to the interface module 11, and the charging current input to the first battery 31 is greater than the charging current input to the second battery 32; when the voltage of the first battery 31 reaches the first preset voltage, the battery management chip 4 may control the first switch 212 to switch to the open state and the second switch 222 to switch to the closed state, that is, the charging circuit 100 switches to the state shown in fig. 4, at this time, the external charging terminal may still maintain the maximum charging power to be input to the interface module 11, and the charging current input to the second battery 32 is greater than the charging current input to the first battery 31.
According to the charging characteristic curve of the battery, in the charging process, when the electric quantity of the battery reaches a certain degree, the charging state can be switched to a constant-voltage charging state, the output power of the external charger is adjustable at the moment, and the charging current input to the battery is gradually reduced. Therefore, based on the embodiment shown in fig. 3 and 4, when the charge of the first battery 31 and the second battery 32 reach the second preset percentage of the corresponding battery capacity, or the voltage of the first battery 31 and the second battery 32 reach the second preset voltage, the battery management chip 4 may control the first switch 212 and the second switch 222 to switch to the closed state, that is, the charging circuit 100 switches to the state shown in fig. 5, when the charging power of the charger changes according to the requirement of the battery, and the first battery 31 and the second battery 32 are in the constant voltage charging stage or close to the constant voltage charging stage.
In a further embodiment, when the charger is turned on with the interface module 1 and it is determined that the remaining capacities of the first battery 31 and the second battery 32 are higher than the second preset value, the battery management chip 4 may control the first switch 212 and the second switch 222 to switch to the closed state, at this time, the charging power of the charger may be changed according to the needs of the batteries, and the first battery 31 and the second battery 32 may both be in the constant voltage charging phase or close to the constant voltage charging phase. The second preset value may be a percentage of the battery capacity corresponding to each battery, for example, when the remaining power of the first battery 31 and the remaining power of the second battery 32 are both higher than 80% of the battery capacity, the charging circuit 100 may be switched to the state shown in fig. 5 when the charger is turned on with the interface module 1.
In another embodiment, if the user charges in the power-on state, that is, when any one of the first battery 31 and the second battery 32 is in the power supply state, especially under the condition of large power consumption, the battery management chip 4 may control the switch component corresponding to the power supply battery to be switched to the on state, and the switch component of the other battery to be switched to the off state, so as to charge the power supply battery with a large current; further, when the electric quantity of the power supply battery is larger than a third preset percentage of the capacity of the power supply battery, the state of the switch assembly can be switched to, and the power supply battery is charged with low current and another battery is charged with high current. Of course, if the charge of the other battery is higher, the battery management chip 4 may control the first switch 212 and the second switch 222 to switch to the closed state, so as to charge the first battery 31 and the second battery 32 with smaller currents.
In the above embodiments, the resistance values of the first preset resistor 213 and the second preset resistor 214 are related to the internal resistance of the first battery 31, the internal resistance of the second battery 32, the maximum charge rate of the first battery 31, and the maximum charge rate of the second battery, and it should be satisfied that the resistance values of the first preset resistor 213 and the second preset resistor 214 are configured to enable the maximum charge current input to the first battery 31 and the second battery 32 to be smaller than the corresponding maximum charge rate, so as to avoid burning the batteries.
Based on the disclosed technical solution, as shown in fig. 6, the present disclosure further provides an electronic device 200, where the electronic device 200 may include the charging circuit 100 according to any one of the embodiments. The electronic device 200 may include a mobile phone terminal as shown in fig. 6, or the electronic device 200 may further include a tablet terminal, an e-reader, and the like, which is not limited by the present disclosure.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (10)
1. A charging circuit, comprising:
the interface module is used for being connected with an external charging end;
the charging device comprises a plurality of batteries and a plurality of charging sub-circuits, wherein the charging sub-circuits are connected to the interface module in parallel, each charging sub-circuit is connected with one or more batteries in series, and each charging sub-circuit comprises a charging module, a switch assembly and a preset resistor connected with the switch assembly in parallel;
the battery management chip is connected with the plurality of charging sub-circuits and is used for controlling the on-off state of the switch assembly so as to adjust the charging current on the charging sub-circuits.
2. The charging circuit of claim 1, wherein the battery management chip is configured to control a switching state of the switch assembly according to a remaining capacity of the plurality of batteries.
3. The charging circuit of claim 1, wherein the plurality of batteries comprises a first battery and a second battery, the plurality of charging sub-circuits comprises a first charging sub-circuit connected to the first battery, and a second charging sub-circuit connected to the second battery, the first charging sub-circuit and the second charging sub-circuit connected in parallel to the interface module connection;
the first charging sub-circuit comprises a first charging module, a first switch connected with the first charging module and a first preset resistor connected with the first switch in parallel;
the second charging sub-circuit comprises a second charging module, a second switch connected with the second charging module and a second preset resistor connected with the second switch in parallel.
4. The charging circuit according to claim 3, wherein when the remaining capacities of the first battery and the second battery are lower than a first preset value, the battery management chip controls the first switch to be switched to a closed state and the second switch to be switched to an open state, so that the charging current input to the first battery is greater than the charging current input to the second battery;
when the electric quantity of the first battery reaches a first preset percentage of the total capacity of the first battery, the battery management chip controls the first switch to be switched to the open state and the second switch to be switched to the closed state, so that the charging current input into the first battery is smaller than the charging current input into the second battery.
5. The charging circuit according to claim 4, wherein when the remaining capacities of the first battery and the second battery are lower than a first preset value, the battery management chip controls the first switch to be switched to a closed state and the second switch to be switched to an open state, so that the charging current input to the first battery is greater than the charging current input to the second battery;
when the voltage of the first battery reaches a first preset voltage, the battery management chip controls the first switch to be switched to an open state and the second switch to be switched to a closed state, so that the charging current input into the first battery is smaller than the charging current input into the second battery.
6. The charging circuit according to claim 4 or 5, wherein when the electric quantities of the first battery and the second battery reach a second preset percentage of the corresponding battery capacities, or the voltages of the first battery and the second battery reach a second preset voltage, the battery management chip controls the first switch and the second switch to be switched to the closed state.
7. The charging circuit according to claim 3, wherein the battery management chip controls the first switch and the second switch to a closed state when the remaining power of the first battery and the second battery are higher than a second preset value.
8. The charging circuit according to claim 3, wherein when one of the first battery and the second battery is in a power supply state, the battery management chip controls the switch component corresponding to the power supply battery to switch to a closed state, and the switch component corresponding to the other battery to switch to an open state.
9. The charging circuit of claim 3, wherein the resistance values of the first and second preset resistors are related to the internal resistance of the first battery, the internal resistance of the second battery, the maximum charge rate of the first battery, and the maximum charge rate of the second battery.
10. An electronic device, characterized in that it comprises a charging circuit according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911171885.0A CN112865206A (en) | 2019-11-26 | 2019-11-26 | Charging circuit and electronic device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911171885.0A CN112865206A (en) | 2019-11-26 | 2019-11-26 | Charging circuit and electronic device |
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| CN112865206A true CN112865206A (en) | 2021-05-28 |
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| CN201911171885.0A Pending CN112865206A (en) | 2019-11-26 | 2019-11-26 | Charging circuit and electronic device |
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Cited By (1)
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| CN114498803A (en) * | 2021-07-21 | 2022-05-13 | 荣耀终端有限公司 | Charging and discharging circuit and electronic equipment |
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