CN113036880A - Charging device, electronic device and charging method - Google Patents
Charging device, electronic device and charging method Download PDFInfo
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- CN113036880A CN113036880A CN202110385020.5A CN202110385020A CN113036880A CN 113036880 A CN113036880 A CN 113036880A CN 202110385020 A CN202110385020 A CN 202110385020A CN 113036880 A CN113036880 A CN 113036880A
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- battery
- charging
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0019—Circuits for equalisation of charge between batteries using switched or multiplexed charge circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0018—Circuits for equalisation of charge between batteries using separate charge circuits
Abstract
The application discloses a charging device, electronic equipment and a charging method, and belongs to the technical field of charging. The charging device comprises a charging interface, a first battery and a second battery which are connected in series, wherein the charging interface, the first battery and the second battery form a first charging loop, the charging interface and the first battery form a second charging loop, and the charging interface and the second battery form a third charging loop; the first charging loop is used for conducting under the condition that the first battery and the second battery are not fully charged so as to charge the first battery and the second battery together; the second charging loop is used for conducting under the condition that the second battery is fully charged and the first battery is not fully charged so as to charge the first battery independently; and the third charging loop is used for conducting under the condition that the first battery is fully charged and the second battery is not fully charged so as to charge the second battery independently. The technical scheme provided by the embodiment of the application can realize charge equalization under the condition that the capacity difference of two batteries which are connected in series is large.
Description
Technical Field
The present disclosure relates to charging technologies, and in particular, to a charging device, an electronic device, and a charging method.
Background
At present, electronic equipment such as smart mobile phone, panel computer have more and more commonly seen in people's daily life, and under the ordinary condition, electronic equipment power consumption is great, in order to avoid the user to frequently charge to electronic equipment, improves electronic equipment's duration, and in practical application, the industry generally adopts the framework of two batteries series each other to increase electronic equipment's whole battery capacity.
In the related art, two batteries connected in series with each other in the electronic device can be charged simultaneously through a charging interface.
However, in the charging method provided by the related art, the charging currents of the two batteries are completely consistent, so that the difference between the parameters of the two batteries, especially the battery capacities, is very small, otherwise, the problem of charge imbalance occurs, that is, a certain battery cannot be fully charged, and the complete utilization of the battery capacity cannot be realized.
Disclosure of Invention
Based on this, the embodiment of the application provides a charging device, an electronic device and a charging method, which can realize charging equalization under the condition that the capacity difference between two batteries connected in series is large.
In a first aspect, a charging device is provided, wherein the charging device includes a charging interface, and a first battery and a second battery connected in series, wherein the charging interface, the first battery and the second battery form a first charging loop, the charging interface and the first battery form a second charging loop, and the charging interface and the second battery form a third charging loop; the first charging loop is used for conducting under the condition that the first battery and the second battery are not fully charged so as to charge the first battery and the second battery together; the second charging loop is used for conducting under the condition that the second battery is fully charged and the first battery is not fully charged so as to charge the first battery independently; the third charging loop is used for conducting under the condition that the first battery is fully charged and the second battery is not fully charged so as to charge the second battery independently.
In a second aspect, an electronic device is provided, wherein the electronic device includes the charging apparatus provided in the first aspect.
In a third aspect, there is provided a charging method used in the charging device provided in the first aspect, the method including:
respectively detecting whether a first battery and a second battery in the charging device are fully charged; under the condition that the first battery and the second battery are not fully charged, controlling a first charging loop to be conducted to charge the first battery and the second battery together; when the second battery is fully charged and the first battery is not fully charged, controlling a second charging loop to be conducted to charge the first battery independently; and under the condition that the first battery is fully charged and the second battery is not fully charged, controlling the third charging loop to be conducted to charge the second battery independently.
The beneficial effects brought by the technical scheme provided by the embodiment of the application at least comprise:
the charging device comprises a charging interface, a first battery and a second battery which are connected in series, wherein the charging interface, the first battery and the second battery form a first charging loop, the charging interface and the first battery form a second charging loop, and the charging interface and the second battery form a third charging loop; a first charging circuit for conducting when the first battery and the second battery are not fully charged to charge the first battery and the second battery together, a second charging circuit for conducting when the second battery is fully charged and the first battery is not fully charged to charge the first battery alone, a third charging circuit for conducting when the first battery is fully charged and the second battery is not fully charged to charge the second battery alone, so that the charging apparatus can charge the first battery and the second battery together and can also charge the first battery and the second battery alone, when the first battery and the second battery are not fully charged, the first battery and the second battery are charged together through the first charging circuit to ensure charging efficiency, and when one battery is fully charged, the other battery is charged through the second charging circuit or the third charging circuit alone, therefore, under the condition that the capacities of the first battery and the second battery are different and even the difference is large, the charging device provided by the embodiment of the application can fully charge the two batteries based on the two charging processes of common charging and independent charging, so that the capacities of the batteries can be fully utilized, and charging balance is realized.
Drawings
FIG. 1 is a schematic diagram of a charging device;
fig. 2 is a schematic diagram of a charging device according to an embodiment of the present disclosure;
fig. 3 is a schematic diagram of a charging device according to an embodiment of the present disclosure;
fig. 4 is a schematic diagram of a charging device according to an embodiment of the present disclosure;
fig. 5 is a flowchart of a charging method according to an embodiment of the present disclosure;
fig. 6 is a flowchart of another charging method according to an embodiment of the present disclosure.
Detailed Description
To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
In the description of the embodiments of the present application, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to a number of technical features indicated. Thus, features defined as "first," "second," and "third" may explicitly or implicitly include one or more features.
In the description of the embodiments of the present application, it should be noted that the terms "connected" and "connected" should be interpreted broadly, and may be, for example, electrically connected, fixedly connected, detachably connected, or integrally connected, directly connected, indirectly connected, connected through two elements or in an interaction relationship between the two elements, unless explicitly stated or limited otherwise, and the specific meanings of the terms in the embodiments of the present application will be understood by those skilled in the art according to specific situations.
Currently, in order to ensure the cruising ability of electronic devices, many electronic devices adopt an architecture in which two batteries are connected in series to increase the overall battery capacity of the electronic devices. In practical application, two batteries connected in series can be charged simultaneously through a charging interface.
Referring to fig. 1, which shows a circuit implementation for simultaneously charging two batteries connected in series with each other through a charging interface, as shown in fig. 1, the charging interface J is connected in series with the two batteries C1 and C2, and during the charging process, the charging current flows through the battery C1 and the battery C2 in sequence, so as to simultaneously charge the battery C1 and the battery C2.
Since the charging interface J is connected in series with the two batteries C1 and C2, the charging currents flowing through the battery C1 and the battery C2 are completely the same during the charging process, and in this case, in order to fully charge the battery C1 and the battery C2 and avoid the problem of charge imbalance, it is necessary to ensure that the difference between the battery capacities of the battery C1 and the battery C2 is very small.
However, such limitations on battery capacity as described above greatly affect the flexibility of battery architecture implementation in electronic devices. In addition, the batteries are likely to age in the use process, and the aging degrees of the two batteries connected in series may be different, so that the difference between the battery capacities of the two batteries connected in series may be increased due to the different aging degrees, in this case, the battery with the slight aging degree may not be fully charged, and the full utilization of the battery capacity may not be realized.
In view of this, embodiments of the present disclosure provide a charging device, which can achieve charge equalization when the capacity difference between two batteries connected in series is large.
The following disclosure provides many different embodiments or examples for implementing different configurations of embodiments of the application. To simplify the description of the embodiments of the present application, only specific components and arrangements are described below, which are exemplary only and not intended to limit the scope of the present application.
Referring to fig. 2, which is a schematic diagram of a charging device according to an embodiment of the present disclosure, as shown in fig. 2, the charging device may include a charging interface 101 and a first battery 102 and a second battery 103 connected in series. The charging interface 101, the first battery 102 and the second battery 103 form a first charging loop D1, the charging interface 101 and the first battery 102 form a second charging loop D2, and the charging interface 101 and the second battery 103 form a third charging loop D3.
The first charging circuit D1 is configured to be turned on when neither the first battery 102 nor the second battery 103 is fully charged, so as to charge the first battery 102 and the second battery 103 together.
The second charging circuit D2 is configured to be turned on to charge the first battery 102 alone when the second battery 103 is fully charged and the first battery 102 is not fully charged.
The third charging circuit D3 is configured to be turned on to charge the second battery 103 alone when the first battery 102 is fully charged and the second battery 103 is not fully charged.
Optionally, as shown in fig. 1, in the embodiment of the present application, the charging interface 101, the first battery 102 and the second battery 103 in the first charging loop D1 are connected in series, the charging interface 101 and the first battery 102 in the second charging loop D2 are connected in series, and the charging interface 101 and the second battery 103 in the third charging loop D3 are connected in series. As shown in fig. 2, the first battery 102 and the second battery 103 may be connected in series: the cathode tab of the first cell 102 is connected with the anode tab of the second cell 103.
It should be noted that the above-mentioned "common charging" means that the first battery 102 and the second battery 103 are charged at the same time, whereas the first battery 102 alone is charged with only the first battery 102 without charging the second battery 103, and the second battery 103 alone is charged with only the second battery 103 without charging the first battery 102.
In this embodiment of the application, the charging interface 101 may be a USB interface, a Micro USB interface, a Type-C interface, a BTB (board to board connector), and the like, and the charging interface 101 may be connected to an external power source, for example, the external power source may be a power adapter, and the like, and this embodiment of the application does not limit a specific Type of the charging interface 101.
In an alternative embodiment of the present application, the capacities of the first battery 102 and the second battery 103 may be different, and, the capacity difference between the first battery 102 and the second battery 103 may be greater than a preset capacity difference threshold, for example, alternatively, the capacity difference between the first cell 102 and the second cell 103 may be about 100mAh, compared to the requirement that the capacity difference between two cells connected in series must be about 20mAh in the related art, since the charging device provided in the embodiment of the present application can charge the second battery 103 alone when the first battery 102 is fully charged and the second battery 103 is not fully charged, and can charge the first battery 102 alone, with the second battery 103 fully charged and the first battery 102 not fully charged, in such a way as to ensure that both the first battery 102 and the second battery 103 are fully charged, therefore, the capacity difference (about 100 mAh) between the first battery 102 and the second battery 103 can be greatly increased.
It should be noted that in the embodiment of the present application, the capacity of the first battery 102 may be larger than the capacity of the second battery 103, or the capacity of the first battery 102 may be smaller than the capacity of the second battery 103, and the relative capacity size of the first battery 102 and the second battery 103 is not limited in the embodiment of the present application.
It should be further noted that, in the embodiment of the present application, the first battery 102 and the second battery 103 may include a single battery cell, or may include a plurality of battery cells connected in series or in parallel, which is not specifically limited in this embodiment of the present application.
In an optional embodiment of the present application, the first battery 102 and the second battery 103 may be discharged synchronously, that is, the first battery 102 and the second battery 103 may simultaneously supply power to the external circuit based on a series relationship, and even if the remaining power of the first battery 102 is different from that of the second battery 103 after the synchronous discharge, during the charging process, the charging device may separately charge the battery fully charged later through the second charging loop D2 or the third charging loop D3, so as to ensure that the first battery 102 and the second battery 103 can both be fully charged, thereby fully utilizing the capacity of the batteries and realizing charge equalization.
For example, assuming that the fully charged battery voltage of the first battery 102 is 8V, the fully charged battery voltage of the second battery 103 is 4V, during the series discharge, the second battery 103 may be discharged to 3.4V first, the first battery 102 may be discharged to about 3.5V first, the discharge is continued, the first battery 102 may be discharged to about 3.4V, and the second battery 103 may be discharged to about 3.2V, at this time, the voltage output from the first battery 102 and the second battery 103 is about 6.6V, which does not affect the normal power supply to the electronic device, and meanwhile, although the remaining capacity of the second battery 103 is different from the remaining capacity of the first battery 102 after the first battery 102 and the second battery 103 are discharged synchronously, during the charge, the first battery 102 and the second battery 103 may be charged together through the first charge loop, and then the first battery 102 or the second battery 103 may be charged separately through the second charge loop D2 or the third charge loop D3, the first battery 102 and the second battery 103 can be fully charged, so that the capacity of the batteries can be fully utilized, and charging balance is realized.
The charging device provided by the embodiment of the present invention can realize common charging of a first battery and a second battery, and can also realize separate charging of the first battery and the second battery, under the condition that the first battery and the second battery are not fully charged, the first battery and the second battery are commonly charged through the first charging loop, so that the charging efficiency is ensured, and under the condition that a certain battery is fully charged, the other battery is independently charged through the second charging loop or the third charging loop, so as to be fully charged, in this way, under the condition that the capacities of the first battery and the second battery are different, even the difference is large, the charging device provided by the embodiment of the present application can fully charge the two batteries based on two charging processes of common charging and separate charging, thereby the capacities of the batteries can be fully utilized, and the charging balance can be realized.
Referring to fig. 2, as shown in fig. 2, the charging device provided in the embodiment of the present application may further include a first switch module 104, wherein one end of the first switch module 104 is connected to a cathode tab of the first battery 102, and the other end of the first switch module 104 is connected to an anode tab of the second battery 103. In other words, the first switch module 104 may be disposed on a short circuit of the first battery 102 and the second battery 103. The first switch module 104 can be turned off or turned on, and is used for controlling the on/off of the first charging loop D1 and the second charging loop D2.
In an alternative embodiment of the present application, the first switch module 104 may be a MOS transistor or other electronic component with turn-off and turn-on functions, and the embodiment of the present application does not limit the specific type of the first switch module 104.
With continued reference to fig. 2, as shown in fig. 2, the charging interface 101 may be connected to the anode tab of the first battery 102, and when the first switch module 104 is in the conducting state, the first charging circuit D1 is conducted to charge the first battery 102 and the second battery 103 together.
With continued reference to fig. 2, in the embodiment of the present application, the second charging loop D2 may include a first voltage-reducing module 105, wherein one end of the first voltage-reducing module 105 is connected to the charging interface 101, and the other end of the first voltage-reducing module 105 is connected to the cathode tab of the first battery 102.
As shown in fig. 2, when the first switching module 104 is in the off state and the first voltage-reducing module 105 is in the on state, the second charging circuit D2 is turned on to charge the first battery 102 alone.
In an alternative embodiment of the present application, the first buck module 105 may be a DCDC or LDO, and optionally, the power of the first buck module 105 may be about 1W.
With continued reference to fig. 2, in the embodiment of the present application, the third charging loop D3 may include a second voltage-reducing module 106, wherein one end of the second voltage-reducing module 106 is connected to the charging interface 101, and the other end of the second voltage-reducing module 106 is connected to the anode tab of the second battery 103.
As shown in fig. 2, when the second voltage-reducing module 106 is in the on state, the third charging loop D3 is turned on to charge the second battery 103 alone.
In an alternative embodiment of the present application, the second voltage-reducing module 106 may be a DCDC or LDO, and optionally, the power of the second voltage-reducing module 106 may be about 1W.
It should be noted that, in the case that the charging interface 101 charges the first battery 102 and the second battery 103 together through the first charging loop D1, the first voltage-reducing module 105 and the second voltage-reducing module 106 need to be in the off state.
In an alternative embodiment of the present application, the charging device further includes a first power detection module and a first control module (not shown in the figure), which are connected to each other, where the first power detection module may be a power meter or the like, and the first control module may be a control chip or a control circuit, which is not limited in this embodiment of the present application.
The first electric quantity detection module is configured to detect an electric quantity of the first battery 102 and an electric quantity of the second battery 103, and transmit detected electric quantity values to the control module.
The first control module is configured to control the first charging loop D1 to be turned on when the electric quantity of the first battery 102 is smaller than a first preset electric quantity threshold, and the electric quantity of the second battery 103 is smaller than a second preset electric quantity threshold, control the third charging loop D3 to be turned on when the electric quantity of the first battery 102 is larger than the first preset electric quantity threshold, and control the second charging loop D2 to be turned on when the electric quantity of the first battery 102 is smaller than the first preset electric quantity threshold, and the electric quantity of the second battery 103 is larger than the second preset electric quantity threshold.
That is, the first control module may control the second voltage decreasing module 106 to switch from the off state to the on state to turn on the third charging loop D3 when the electric quantity of the first battery 102 is greater than the first preset electric quantity threshold and the electric quantity of the second battery 103 is less than the second preset electric quantity threshold.
The first control module may further control the first voltage reduction module 105 to switch from the off state to the on state and control the first switch module 104 to switch off to turn on the second charging loop D2 when the electric quantity of the first battery 102 is smaller than the first preset electric quantity threshold and the electric quantity of the second battery 103 is larger than the second preset electric quantity threshold.
The first control module may further control the first voltage reduction module 105 and the second voltage reduction module 106 to switch to the off state and control the first switch module 104 to switch on the first charging loop D1 when the electric quantity of the first battery 102 is smaller than the first preset electric quantity threshold and the electric quantity of the second battery 103 is smaller than the second preset electric quantity threshold.
It should be noted that the first preset power threshold and the second preset power threshold may be set according to capacities of the first battery 102 and the second battery 103, and specific values thereof are not limited in detail in the embodiment of the present application, in general, when the power of the first battery 102 is greater than or equal to the first preset power threshold, it indicates that the first battery 102 is fully charged, and when the power of the second battery 103 is greater than or equal to the second preset power threshold, it indicates that the second battery 103 is fully charged, and when the power of the second battery 103 is less than the second preset power threshold, it indicates that the second battery 103 is not fully charged.
Referring to fig. 3, in an alternative embodiment of the present application, the charging apparatus may further include an equalizing circuit 107, where the equalizing circuit 107 is connected to the first battery 102 and the second battery 103, and the equalizing circuit 107 is configured to equalize the electric quantities of the first battery 102 and the second battery 103.
That is, the equalizing circuit 107 can reduce the electric quantity of the first battery 102 when the electric quantity of the first battery 102 is larger than that of the second battery 103, and can reduce the electric quantity of the second battery 103 when the electric quantity of the second battery 103 is larger than that of the first battery 102.
The equalization circuit 107 is provided as an advantageous addition to further ensure that the charging of the first battery 102 and the second battery 103 is equalized.
Specifically, referring to fig. 4, the equalizing circuit 107 may include a first resistor R1, a second switch module K1, a second resistor R2, and a third switch module K2.
One end of the first resistor R1 is connected to an anode tab of the first battery 102, the other end of the first resistor R1 is connected to a first end of the second switch module K1, a second end of the second switch module K2 is connected to a first end of the third switch module K2, a second end of the third switch module K2 is connected to a cathode tab of the second battery 103, one end of the second resistor R2 is connected to an anode tab of the second battery 103, and the other end of the second resistor R2 is connected to a first end of the third switch module K2.
It should be noted that, similarly to the first switch module 104 described above, the second switch module K1 and the third switch module K2 may be MOS transistors, and the embodiments of the present application are not limited thereto.
In an optional embodiment of the present application, the charging device may further include a second electric quantity detection module and a second control module (not shown in the drawings), where it should be noted that, in the embodiment of the present application, the second electric quantity detection module and the second control module may be the same as or different from the first electric quantity detection module and the first control module described above, and this is not specifically limited in the embodiment of the present application.
The second electric quantity detection module is configured to detect an electric quantity of the first battery 102 and an electric quantity of the second battery 103, and transmit the detected electric quantity values to the second control module.
The second control module is used for controlling the second switch module K1 to be turned on when the power of the first battery 102 is greater than the power of the second battery 103, and is also used for controlling the third switch module K2 to be turned on when the power of the first battery 102 is less than the power of the second battery 103.
In the case where the second switching module K1 is turned on, the current of the first battery 102 may be consumed by the resistor in the equalization circuit 107, thereby reducing the capacity of the first battery 102, and in the case where the third switching module K2 is turned on, the current of the second battery 103 may be consumed by the resistor in the equalization circuit 107, thereby reducing the capacity of the first battery 103.
The embodiment of the present application further provides an electronic device, where the electronic device may be a smartphone, a tablet computer, a notebook computer, a wearable device, and the like, and the electronic device may include the charging apparatus shown in any one of fig. 2 to fig. 4 above.
An embodiment of the present application further provides a charging method, which can be applied to the charging device described in the foregoing embodiments, please refer to fig. 5, and the charging method includes the following steps:
As described above, the charging device may be provided with a power detection module, which may be an electricity meter, and the charging device may detect the power of the first battery and the power of the second battery through the power detection module, and determine that the first battery is fully charged when the power of the first battery is greater than or equal to a first preset power threshold, and determine that the second battery is fully charged when the power of the second battery is greater than or equal to a second preset power threshold.
As described above, the first preset electric quantity threshold and the second preset electric quantity threshold are determined according to the capacity of the first battery and the capacity of the second battery, respectively.
And 502, under the condition that the first battery and the second battery are not fully charged, controlling the first charging loop to be conducted to charge the first battery and the second battery together.
That is, under the condition that the electric quantity of the first battery is smaller than the first preset electric quantity threshold value and the electric quantity of the second battery is smaller than the second preset electric quantity threshold value, the first charging loop is controlled to be conducted, and optionally, the mode of controlling the first charging loop to be conducted may include: and controlling the first voltage reduction module and the second voltage reduction module to be switched to a closed state, and simultaneously controlling the first switch module to be switched on.
And 503, controlling the second charging loop to be conducted to charge the first battery independently when the second battery is fully charged and the first battery is not fully charged.
That is, under the condition that the electric quantity of the first battery is less than the first preset electric quantity threshold value and the electric quantity of the second battery is greater than or equal to the second preset electric quantity threshold value, the second charging loop is controlled to be conducted, and optionally, the mode of controlling the second charging loop to be conducted may include: and controlling the first voltage reduction module to be switched from the off state to the on state, and simultaneously controlling the first switch module to be switched off.
And 504, under the condition that the first battery is fully charged and the second battery is not fully charged, controlling the third charging loop to be conducted to charge the second battery independently.
That is, when the electric quantity of the first battery is greater than or equal to the first preset electric quantity threshold and the electric quantity of the second battery is smaller than the second preset electric quantity threshold, the third charging loop is controlled to be turned on, and optionally, the mode of controlling the third charging loop to be turned on may include: and controlling the second voltage reduction module to be switched from the off state to the on state.
On the basis of the charging method shown in fig. 5, an embodiment of the present application further provides a method for equalizing the electric quantity of the first battery and the electric quantity of the second battery in the charging device, as shown in fig. 6, the method includes the following steps:
As described above, the charging device may be provided with the power detection module, which may be an electricity meter, and the charging device may detect the power of the first battery and the power of the second battery through the power detection module.
Optionally, when the electric quantity of the first battery is greater than the electric quantity of the second battery, the second switch module of the equalizing circuit in the charging device may be controlled to be turned on.
Optionally, when the electric quantity of the first battery is less than the electric quantity of the second battery, the third switching module of the equalizing circuit in the charging device may be controlled to be turned on.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (11)
1. A charging device is characterized by comprising a charging interface, a first battery and a second battery which are connected in series, wherein the charging interface, the first battery and the second battery form a first charging loop, the charging interface and the first battery form a second charging loop, and the charging interface and the second battery form a third charging loop;
the first charging loop is used for conducting under the condition that the first battery and the second battery are not fully charged so as to charge the first battery and the second battery together;
the second charging loop is used for conducting under the condition that the second battery is fully charged and the first battery is not fully charged so as to charge the first battery independently;
the third charging loop is used for conducting when the first battery is fully charged and the second battery is not fully charged so as to charge the second battery independently.
2. The charging device according to claim 1, further comprising a first switch module, wherein one end of the first switch module is connected to a cathode tab of the first battery, and the other end of the first switch module is connected to an anode tab of the second battery, and the first switch module is configured to control on/off of the first charging loop and the second charging loop.
3. The charging device of claim 2, wherein the charging interface is connected to an anode tab of the first battery, and the first charging circuit is turned on when the first switching module is in the on state.
4. The charging device of claim 2, wherein the second charging loop comprises a first voltage-reducing module, one end of the first voltage-reducing module is connected with the charging interface, and the other end of the first voltage-reducing module is connected with a cathode tab of the first battery;
and when the first switch module is in an off state and the first voltage reduction module is in an on state, the second charging loop is conducted.
5. The charging device of claim 2, wherein the third charging loop comprises a second voltage-reducing module, one end of the second voltage-reducing module is connected to the charging interface, and the other end of the second voltage-reducing module is connected to an anode tab of the second battery;
and the third charging loop is conducted under the condition that the second voltage reduction module is in an opening state.
6. The charging device of claim 1, further comprising a first charge amount detection module and a first control module connected to each other;
the first electric quantity detection module is used for detecting the electric quantity of the first battery and the electric quantity of the second battery;
the first control module is used for controlling the first charging loop to be switched on when the electric quantity of the first battery is smaller than a first preset electric quantity threshold value and controlling the first charging loop to be switched on when the electric quantity of the second battery is smaller than a second preset electric quantity threshold value, and controlling the third charging loop to be switched on when the electric quantity of the second battery is smaller than the second preset electric quantity threshold value and controlling the second charging loop to be switched on when the electric quantity of the first battery is smaller than the first preset electric quantity threshold value and controlling the second charging loop to be switched on when the electric quantity of the second battery is larger than the second preset electric quantity threshold value.
7. The charging device of claim 1, further comprising an equalization circuit coupled to the first battery and the second battery, the equalization circuit configured to equalize the charge of the first battery and the second battery.
8. The charging device of claim 7, wherein the equalization circuit comprises a first resistor, a second switching module, a second resistor, and a third switching module;
wherein, the one end of first resistance with the positive pole utmost point ear of first battery is connected, the other end of first resistance with the first end of second switch module is connected, the second end of second switch module with the first end of third switch module is connected, the second end of third switch module with the negative pole utmost point ear of second battery is connected, the one end of second resistance with the positive pole utmost point ear of second battery is connected, the other end of second resistance with the first end of third switch module is connected.
9. The charging device of claim 8, further comprising a second charge detection module and a second control module connected to each other;
the second electric quantity detection module is used for detecting the electric quantity of the first battery and the electric quantity of the second battery;
the second control module is used for controlling the second switch module to be conducted under the condition that the electric quantity of the first battery is larger than that of the second battery, and is also used for controlling the third switch module to be conducted under the condition that the electric quantity of the first battery is smaller than that of the second battery.
10. An electronic device characterized in that it comprises a charging apparatus according to any one of claims 1 to 9.
11. A charging method used in the charging device according to any one of claims 1 to 9, the method comprising:
respectively detecting whether a first battery and a second battery in the charging device are fully charged;
under the condition that the first battery and the second battery are not fully charged, controlling a first charging loop to be conducted to charge the first battery and the second battery together;
when the second battery is fully charged and the first battery is not fully charged, controlling a second charging loop to be conducted to charge the first battery independently;
and under the condition that the first battery is fully charged and the second battery is not fully charged, controlling the third charging loop to be conducted to charge the second battery independently.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110385020.5A CN113036880A (en) | 2021-04-09 | 2021-04-09 | Charging device, electronic device and charging method |
| PCT/CN2022/080094 WO2022213767A1 (en) | 2021-04-09 | 2022-03-10 | Charging apparatus, electronic device, and charging method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110385020.5A CN113036880A (en) | 2021-04-09 | 2021-04-09 | Charging device, electronic device and charging method |
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| CN202110385020.5A Pending CN113036880A (en) | 2021-04-09 | 2021-04-09 | Charging device, electronic device and charging method |
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| WO (1) | WO2022213767A1 (en) |
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| WO2022213767A1 (en) * | 2021-04-09 | 2022-10-13 | Oppo广东移动通信有限公司 | Charging apparatus, electronic device, and charging method |
| CN116667473A (en) * | 2022-12-13 | 2023-08-29 | 荣耀终端有限公司 | Control circuit, circuit control method and electronic equipment |
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| WO2022213767A1 (en) | 2022-10-13 |
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