CN115603394A

CN115603394A - Battery circuit, control method and device thereof, terminal and storage medium

Info

Publication number: CN115603394A
Application number: CN202110778931.4A
Authority: CN
Inventors: 谢雪云
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2021-07-09
Filing date: 2021-07-09
Publication date: 2023-01-13

Abstract

The disclosure relates to a battery circuit, a control method and device thereof, a terminal and a storage medium. The battery circuit includes: a plurality of cells connected in parallel; and the electric meters are consistent with the electric cores in number, and each electric meter is respectively and correspondingly connected with one electric core in parallel. Through this disclosed battery circuit, can carry out the electric quantity control to each electric core in the battery to the in-process that carries out battery charging or discharge, improve the monitoring accuracy to electric core electric quantity.

Description

Battery circuit, control method and device thereof, terminal and storage medium

Technical Field

The present disclosure relates to the field of battery charging technologies, and in particular, to a battery circuit, a control method and apparatus thereof, a terminal, and a storage medium.

Background

With the update iteration of the terminal such as the mobile phone, people have higher and higher requirements on various performances of the terminal. In the related art, a mode that two battery cores are connected in parallel is usually adopted, so that the battery capacity of the terminal is improved.

In the related art, two battery cells of the same specification are generally installed at the same terminal and used in parallel, and one electricity meter is connected to one of the battery cells in parallel to obtain the electricity usage of one of the battery cells. In the related art, for the purpose of simple design, it is assumed that the electricity usage of two cells with the same specification is consistent, and the obtained electricity usage of one of the cells is used as the electricity usage of the cell that is not detected. In the related art, during the charging and discharging process of the terminal, the battery cell of which the electric quantity value is not detected has the possibility of being overcharged or overdischarged.

Disclosure of Invention

To overcome the problems in the related art, the present disclosure provides a battery circuit, a method and apparatus for controlling the same, a terminal, and a storage medium.

According to a first aspect of embodiments of the present disclosure, there is provided a battery circuit comprising:

a plurality of cells connected in parallel; and the electric meters are consistent with the electric cores in number, and each electric meter is respectively and correspondingly connected with one electric core in parallel.

In one embodiment, the battery circuit further comprises: and the battery protection circuit is connected with the plurality of electric cores in parallel connection and is used for controlling the on-off state of a passage between each electric core in the plurality of electric cores in parallel connection and the power supply loop.

In one embodiment, the plurality of parallel-connected cells includes a first cell and a second cell, the fuel gauge includes a first fuel gauge and a second fuel gauge, and the battery protection circuit includes a first battery protection circuit and a second battery protection circuit; the first electricity meter is connected in parallel with the first electric core; the second electricity meter is connected in parallel with the second electric core; the first battery protection circuit is connected in series with the first battery cell; the second battery protection circuit is connected in series with the second battery cell.

In one embodiment, the battery circuit further includes a signal output circuit and a control chip, wherein the signal output circuit is connected to the battery protection circuit, and is configured to output, to the battery protection circuit, a turn-on signal or a turn-off signal for controlling a turn-on/off state of a path between each of the plurality of parallel-connected battery cells and the power supply circuit; the control chip is connected with the signal output circuit, and is configured to control the signal output circuit to output the on-signal to a battery protection circuit connected to the plurality of parallel-connected battery cells when the plurality of parallel-connected battery cells are charged or discharged, and to control the signal output circuit matched with the battery cell in a full-power state or an empty-power state when it is determined that the battery cell in the full-power state or the empty-power state exists in the plurality of parallel-connected battery cells during the charging process of the plurality of parallel-connected battery cells, and output the off-signal to the battery protection circuit connected to the battery cell in the full-power state or the empty-power state.

In one embodiment, the plurality of cells connected in parallel have different specifications, and the specifications include one or more of an impedance value, an open-circuit voltage value, and a charge value in a full-charge state of the cells.

According to a second aspect of embodiments of the present disclosure, a terminal is provided. Wherein the terminal comprises the battery circuit described in the first aspect of the present disclosure or any implementation manner of the first aspect.

According to a third aspect of the embodiments of the present disclosure, there is provided a battery circuit control method, where the battery circuit includes a plurality of fuel meters and a plurality of cells connected in parallel to each other, the method including:

controlling the plurality of electricity meters to monitor an electricity quantity value of each of the plurality of parallel-connected electricity cores; and carrying out charge and discharge control on the plurality of parallel-connected battery cores based on the electric quantity value monitored by each of the plurality of electric meters.

In one embodiment, performing charge and discharge control on the plurality of parallel-connected battery cells includes: and controlling the on-off state between each electric core in the plurality of electric cores connected in parallel and the power supply loop.

In one embodiment, controlling the on/off state between each of the plurality of parallel-connected cells and the power supply circuit includes: and in the charging process and/or the discharging process of the plurality of parallel-connected battery cells, controlling the on-off state between each battery cell of the plurality of parallel-connected battery cells and a power supply loop.

In one embodiment, the plurality of parallel-connected cells includes a first cell and a second cell, and the battery circuit further includes a signal output circuit and a control chip; in the charging process of the plurality of parallel-connected battery cells, controlling the on-off state between each battery cell in the plurality of parallel-connected battery cells and a power supply loop respectively, including: in the process of charging the plurality of parallel-connected battery cells, if the first battery cell is in a full-charge state and the second battery cell is not in the full-charge state, the control chip controls the signal output circuit matched with the first battery cell to send a cut-off signal to the battery protection circuit connected with the first battery cell, controls the connection state between the first battery cell and the charging loop to be switched from a conducting state to a cut-off state, keeps the connection state between the second battery cell and the charging loop in a conducting state until the second battery cell is in the full-charge state, controls the signal output circuit matched with the second battery cell, and sends the cut-off signal to the battery protection circuit connected with the second battery cell, so that the connection state between the second battery cell and the charging loop is switched from the conducting state to the cut-off state.

In one embodiment, the plurality of parallel-connected cells includes a first cell and a second cell, and the battery circuit further includes a signal output circuit and a control chip; in the discharging process of the plurality of parallel-connected battery cells, controlling the on-off state between each battery cell of the plurality of parallel-connected battery cells and a power supply loop respectively, including: in the process of discharging the multiple parallel-connected battery cores, if the first battery core is in an empty state and the second battery core is not in an empty state, the control chip controls the signal output circuit matched with the first battery core to send a cut-off signal to the battery protection circuit connected with the first battery core, controls the connection state between the first battery core and the discharge loop to be switched from a conducting state to a cut-off state, keeps the connection state between the second battery core and the discharge loop in a conducting state until the second battery core is in an empty state, controls the signal output circuit matched with the second battery core, and sends a cut-off signal to the battery protection circuit connected with the second battery core, so that the connection state between the second battery core and the discharge loop is switched from a conducting state to a cut-off state.

In one embodiment, the method further comprises: determining a current comprehensive electric quantity value of the plurality of parallel-connected electric cores based on a current electric quantity value of each electric core in the plurality of parallel-connected electric cores and an electric quantity value of each electric core in the plurality of parallel-connected electric cores in a full electric state, wherein the comprehensive electric quantity value is a ratio of the current electric quantity and value of each electric core to the electric quantity and value of each electric core in the full electric state.

According to a fourth aspect of the embodiments of the present disclosure, there is provided a battery circuit control apparatus, the battery circuit including a plurality of fuel gauges and a plurality of cells connected in parallel, the apparatus including:

the monitoring unit is used for monitoring the electric quantity value of each electric core in the plurality of electric cores connected in parallel; and the control unit is used for carrying out charge and discharge control on the plurality of parallel-connected battery cores based on the electric quantity value monitored by each of the plurality of electric meters.

In one embodiment, the control unit performs charge and discharge control on the plurality of cells connected in parallel by using the following method, including: and controlling the on-off state between each electric core in the plurality of electric cores connected in parallel and the power supply loop.

In one embodiment, the control unit controls the on-off state between each of the plurality of parallel-connected cells and the power supply circuit as follows: and in the charging process and/or the discharging process of the plurality of electric cores connected in parallel, controlling the on-off state between each electric core in the plurality of electric cores connected in parallel and a power supply loop.

In one embodiment, the plurality of cells connected in parallel includes a first cell and a second cell, and the battery circuit further includes a signal output circuit and a control chip; the control unit is used for controlling the on-off state between each battery cell in the plurality of battery cells connected in parallel and a power supply loop in the charging process of the plurality of battery cells connected in parallel in the following way: in the process of charging the plurality of parallel-connected battery cells, if the first battery cell is in a full-charge state and the second battery cell is not in the full-charge state, the control chip controls the signal output circuit matched with the first battery cell to send a cut-off signal to the battery protection circuit connected with the first battery cell, controls the connection state between the first battery cell and the charging loop to be switched from a conducting state to a cut-off state, keeps the connection state between the second battery cell and the charging loop in a conducting state until the second battery cell is in the full-charge state, controls the signal output circuit matched with the second battery cell, and sends the cut-off signal to the battery protection circuit connected with the second battery cell, so that the connection state between the second battery cell and the charging loop is switched from the conducting state to the cut-off state.

In one embodiment, the plurality of parallel-connected cells includes a first cell and a second cell, and the battery circuit further includes a signal output circuit and a control chip; the control unit controls the on-off state between each electric core in the plurality of electric cores connected in parallel and the power supply loop in the discharging process of the plurality of electric cores connected in parallel in the following mode: in the process of discharging the multiple parallel-connected battery cores, if the first battery core is in an empty state and the second battery core is not in an empty state, the control chip controls the signal output circuit matched with the first battery core to send a cut-off signal to the battery protection circuit connected with the first battery core, controls the connection state between the first battery core and the discharge loop to be switched from a conducting state to a cut-off state, keeps the connection state between the second battery core and the discharge loop in a conducting state until the second battery core is in an empty state, controls the signal output circuit matched with the second battery core, and sends a cut-off signal to the battery protection circuit connected with the second battery core, so that the connection state between the second battery core and the discharge loop is switched from a conducting state to a cut-off state.

In one embodiment, the apparatus further comprises: a determining unit, configured to determine a current comprehensive electric quantity value of the multiple parallel-connected electric cores based on a current electric quantity value of each of the multiple parallel-connected electric cores and an electric quantity value of each of the multiple parallel-connected electric cores in a full electric state, where the comprehensive electric quantity value is a ratio between the current electric quantity and value of each of the multiple electric cores and the electric quantity and value of each of the multiple electric cores in the full electric state.

According to a fifth aspect of embodiments of the present disclosure, there is provided a processor;

a memory for storing processor-executable instructions; wherein the processor is configured to: the battery circuit control method described in any one of the embodiments of the first aspect or the third aspect is performed.

According to a sixth aspect of the embodiments of the present disclosure, there is provided a storage medium having instructions stored therein, wherein the instructions when executed by a processor enable the processor to execute the battery circuit control method described in the third aspect or any one of the embodiments of the third aspect.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: the battery circuit provided by the present disclosure includes a plurality of parallel-connected cells and a plurality of fuel gauges. The quantity of the electricity meters is consistent with the number of the battery cells, and each electricity meter is connected with one battery cell in parallel, so that accurate electricity monitoring is carried out on each battery cell in the battery cells connected in parallel.

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 of a battery circuit according to one of the related art.

Fig. 2 is a schematic diagram illustrating a battery circuit according to an exemplary embodiment.

Fig. 3 is a schematic diagram illustrating another battery circuit according to an example embodiment.

Fig. 4 is a schematic diagram illustrating a connection relationship between a first battery cell, a first electricity meter, and a first battery protection circuit according to an exemplary embodiment.

Fig. 5 is a schematic diagram illustrating a connection relationship between a second battery cell, a second electricity meter, and a second battery protection circuit according to an exemplary embodiment.

Fig. 6 is a schematic diagram illustrating yet another battery circuit in accordance with an exemplary embodiment.

Fig. 7 is a modular schematic diagram illustrating a battery circuit according to an exemplary embodiment.

Fig. 8 is a schematic diagram illustrating a battery circuit according to an exemplary embodiment.

Fig. 9 is a flow chart illustrating a battery circuit control method according to an exemplary embodiment.

FIG. 10 is a flow chart illustrating another battery circuit control method according to an exemplary embodiment.

FIG. 11 is a flow chart illustrating yet another battery circuit control method in accordance with an exemplary embodiment.

FIG. 12 is a schematic diagram illustrating a determination of a composite charge value in accordance with an exemplary embodiment.

Fig. 13 is a block diagram illustrating a battery circuit arrangement according to an exemplary embodiment.

Fig. 14 is a block diagram illustrating another battery circuit arrangement according to an example embodiment.

FIG. 15 is a block diagram illustrating an apparatus for battery circuit control in accordance with 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. The following description refers to the accompanying drawings in which the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below do not 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.

In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are only a subset of the embodiments of the present disclosure, and not all embodiments. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the present disclosure, and should not be construed as limiting the present disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure. Embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

In the related art, two battery cells of the same specification are generally installed at the same terminal and used in parallel, and one electricity meter is connected to one of the battery cells in parallel to obtain the electricity usage of one of the battery cells. In the related art, for the purpose of simple design, it is assumed that the electricity usage conditions of two cells with the same specification are consistent, and the obtained electricity usage condition of one of the cells is used as the electricity usage condition of the undetected cell. Because the cells with the same specification may have performance differences caused by production quality and/or cell aging, the electricity usage of the untested cells may differ from the electricity usage of the tested cells. In the related art, during the charging and discharging process of the terminal, the battery cell of which the electric quantity value is not detected has the possibility of being overcharged or overdischarged. For example, as shown in fig. 1, two battery cores (battery core a and battery core B) with the same specification are installed at the terminal of the folding screen, and the electric quantity value of the battery core B is monitored in a manner that the electric quantity meter is connected in parallel to the battery core B, so that the electric quantity use condition of the battery core B is used as the electric quantity use condition of the battery core a. Since there may be a performance difference between the cell a and the cell B due to production quality and/or cell aging. Therefore, the usage of electric power of the battery cell a is different from that of the battery cell B. In the related art, the terminal is actually charged and discharged according to the electric quantity change condition of the battery cell B, so that the battery cell a may be overcharged or overdischarged during the charging and discharging process of the terminal. For example, during terminal charging, it may happen that cell a is in a full state and cell B is in a non-full state. In this case, the terminal does not cut off the charging loop of the battery cell a, which may cause the battery cell a in a full charge state to be in an overcharged state, resulting in damage to the battery cell a.

The battery circuit provided by the embodiment of the disclosure can be applied to a terminal. The electric core of the terminal battery can be understood as an electric core in the battery circuit. When the terminal needs to supply power, the battery cell is used as a power supply device to discharge to the outside. Through the battery circuit that this disclosure provided, can carry out accurate electric quantity monitoring to every electric core in the terminal battery.

Fig. 2 is a schematic diagram of a battery circuit 1 according to an exemplary embodiment, and as shown in fig. 2, the battery circuit 1 includes a plurality of battery cells 11 connected in parallel and a plurality of electricity meters 12, where the number of the plurality of electricity meters 12 is equal to the number of the battery cells, and each electricity meter corresponds to one battery cell in parallel.

The battery circuit 1 provided by the embodiment of the present disclosure can implement relatively accurate electric quantity monitoring on each electric core of the electric cores 11 connected in parallel through the plurality of electric meters 12.

In the embodiment of the present disclosure, since the battery circuit 1 may perform electric quantity detection on each of the plurality of electric cells 11 connected in parallel, it is not necessary to detect the electric quantity usage of one electric cell in a plurality of batteries with the same specification to represent the electric quantity usage of other electric cells. Therefore, in the battery circuit 1 provided in the embodiment of the present disclosure, the specifications of the plurality of battery cells 11 connected in parallel may be the same or different. The specification of the battery may include one or more of an impedance value, an open-circuit voltage value, and a charge value in a full-charge state of the battery cell.

In one example, the battery circuit 1 may further include a battery protection circuit 13. The battery protection circuit 13 may be configured to control an on-off state of a path between each of the multiple cells 11 connected in parallel and the power supply loop.

Fig. 3 is a schematic diagram of another battery circuit 1 according to an exemplary embodiment, and as shown in fig. 3, a battery protection circuit 13 may be connected to a plurality of cells 11 connected in parallel.

In an embodiment, the battery protection circuit 13 may control the on/off state of a path between each of the plurality of cells 11 connected in parallel and the power supply loop.

In an example, the plurality of parallel-connected cells 11 may include a first cell 111 and a second cell 112, the plurality of electricity meters 12 may include a first electricity meter 121 and a second electricity meter 122, and the battery protection circuit 13 includes a first battery protection circuit 131 and a second battery protection circuit 132.

In an embodiment, the first electricity meter may be connected in parallel to the first battery cell 111, the second electricity meter may be connected in parallel to the second battery cell 112, the first battery protection circuit 131 may be connected in series to the first battery cell 111, and the second battery protection circuit 132 may be connected in series to the second battery cell 112.

Fig. 4 is a schematic diagram illustrating a connection relationship between the first battery cell 111, the first electricity meter 121, and the first battery protection circuit 131 according to an exemplary embodiment, where as shown in fig. 4, the first electricity meter may be connected in parallel to the first battery cell 111 to monitor an electricity value of the first battery cell 111. The first battery protection circuit 131 may be connected in series to the first battery cell 111, and controls an on/off state of a path between the first battery cell 111 and the power supply circuit.

Fig. 5 is a schematic diagram illustrating a connection relationship between the second battery cell 112, the second fuel gauge 122, and the second battery protection circuit 132 according to an exemplary embodiment, where as shown in fig. 5, the second fuel gauge may be connected in parallel to the second battery cell 112 to monitor a fuel value of the second battery cell 112. The second battery protection circuit 132 may be connected in series to the second battery cell 112, and controls an on/off state of a path between the second battery cell 112 and the power supply loop.

The battery circuit 1 provided by the embodiment of the present disclosure can monitor the electric quantity value of the first electric core 111 through the first electric meter, and monitor the electric quantity value of the second electric core 112 through the second electric meter, thereby realizing individual detection of each electric core electric quantity value in the plurality of electric cores 11 connected in parallel. The on-off state of the path between the first battery cell 111 and the power supply loop can be controlled by the first battery protection circuit 131, and the on-off state of the path between the second battery cell 112 and the power supply loop is controlled by the second battery protection circuit 132, so that the on-off state of the path between each battery cell of the plurality of battery cells 11 connected in parallel and the power supply loop is controlled.

In one example, the battery circuit 1 may further include a signal output circuit 14 and a control chip 15. The signal output circuit 14 may be connected to the battery protection circuit 13. The control chip 15 may be connected to the signal output circuit 14 and to the plurality of fuel gauges 12.

Fig. 6 is a schematic diagram illustrating yet another battery circuit 1 according to an exemplary embodiment, and as shown in fig. 6, a signal output circuit 14 may be connected to the battery protection circuit 13. The control chip 15 may be connected to the signal output circuit 14 and to the plurality of fuel gauges 12.

In one example, the signal output circuit 14 may output, to the battery protection circuit 13, an on signal or an off signal that controls an on/off state of a path between each of the plurality of parallel-connected battery cells 11 and the power supply circuit. For example, the signal output circuit 14 may output a conducting signal to the first battery protection circuit 131, so that the first battery protection circuit 131 controls the on/off state of the path between the first battery cell 111 and the power supply loop to be in a conducting state. For another example, the signal output circuit 14 may output a cut-off signal to the second battery protection circuit 132, so that the second battery protection circuit 132 controls the on-off state of the path between the second battery cell 112 and the power supply loop to be in a cut-off state.

In another example, the control chip 15 may control the signal output circuit 14 to output an on signal or an off signal. For example, the control chip 15 may control the signal output circuit 14 to output an on signal to the battery protection circuit 13 connected to the plurality of battery cells 11 connected in parallel when the plurality of battery cells 11 connected in parallel are charged or discharged. For another example, the control chip 15 may control the signal output circuit 14 matched to the cell in the full charge state or the empty charge state, and output the cutoff signal to the battery protection circuit 13 connected to the cell in the full charge state or the empty charge state during the charging of the plurality of parallel-connected cells 11 and in the case where it is determined that the cell in the full charge state or the empty charge state exists among the plurality of parallel-connected cells 11.

In an embodiment, the control chip 15 may determine whether a battery cell in a full-charge state or an empty-charge state exists in the plurality of battery cells 11 connected in parallel by acquiring the electric quantity values monitored by the plurality of electricity meters 12. Further, the control chip 15 may control the signal output circuit 14 matched to the cell in the full charge state or the empty charge state to output a cutoff signal to the battery protection circuit 13 connected to the cell in the full charge state or the empty charge state, in a case where it is determined that there is a cell in the full charge state or the empty charge state among the plurality of cells 11 connected in parallel.

Fig. 7 is a schematic diagram illustrating modularization of a battery circuit according to an exemplary embodiment, and as shown in fig. 7, in the embodiment of the present disclosure, an interrupt module is added to the battery circuit on the basis of an original protection module. Furthermore, the on-off state between the battery cell and the power supply loop can be switched to the off state from the on state through the protection module under the conditions that the battery cell is in charging overvoltage, discharging undervoltage, discharging overcurrent, charging overcurrent and/or short circuit, so that the battery cell is controlled to be charged and discharged under the condition that the battery cell is in abnormal charging and discharging. And the on-off state between the battery cell and the power supply loop is switched to the off state from the on state through the interruption module under the condition that the battery cell is in a full power state or an empty power state, so that the battery cell is subjected to charge and discharge control under the condition that the battery cell is not abnormally charged and discharged.

Fig. 8 is a schematic diagram illustrating a battery circuit according to an exemplary embodiment. As shown in fig. 8, the battery circuit may be a battery circuit including two battery cells (a first battery cell and a second battery cell). The first battery cell and the second battery cell are connected in parallel. The first electricity meter is connected with the first battery protection circuit in series under the condition of being connected with the first battery core in parallel, and the second electricity meter is connected with the second battery protection circuit in series under the condition of being connected with the second battery core in parallel. The first electricity meter and the second electricity meter are respectively connected to the control chip and used for sending the electric quantity value of the first electric core and the electric quantity value of the second electric core to the control chip. The control chip is connected with the first battery protection circuit through the first signal output circuit and is used for controlling the first signal output circuit to send a conducting signal or a stopping signal to the first battery protection circuit. The control chip is connected with the second battery protection circuit through the second signal output circuit and used for controlling the second signal output circuit to send a conducting signal or a stopping signal to the second battery protection circuit.

In an example, the first battery protection circuit may include a first transistor (Q1) and a first protection chip, wherein the first transistor is configured to switch an on-off state between the first battery cell and the power supply circuit from an on state to an off state when the first battery cell is in a full-charge state. The signal output circuit may include a first signal output circuit for transmitting an on signal or an off signal to the first battery protection circuit. In an embodiment, when the control chip determines that the first electric core is in the full-charge state through the electric quantity value fed back by the first electricity meter, the control chip may control the first signal output chip of the first signal output circuit to send the cut-off signal to the first protection chip. When the first protection chip receives the off signal, the first transistor is switched from the on state to the off state by transmitting a high level to the first transistor. Through the adoption of the charging method and the charging device, in the charging process, when the first battery cell is in the full-charge state, the on-off state between the first battery cell and the charging loop is controlled to be switched to be the cut-off state from the on state, so that the risk of overcharging of the first battery cell is reduced.

In another example, the first battery protection circuit may include a first protection chip and a second transistor (Q2) for switching an on/off state between the first battery cell and the power supply circuit from an on state to an off state when the first battery cell is in an empty state. In an embodiment, when the control chip determines that the first electric core is in the empty state through the electric quantity value fed back by the first electricity meter, the control chip may control the second signal output chip of the first signal output circuit to send the cutoff signal to the second protection chip. Under the condition that the second protection chip receives the cut-off signal, the second transistor is switched from the on state to the off state in a mode of sending a high level to the second transistor, and then the on-off state between the first battery cell and the power supply loop is controlled to be switched from the on state to the off state. Through the method and the device, in the discharging process, when the first battery cell is in the empty state, the on-off state between the first battery cell and the discharging loop is controlled to be switched to be the cut-off state from the on state, and the risk of over-discharging of the first battery cell is reduced.

In the embodiment of the present disclosure, the implementation process of the charge and discharge control for the second battery cell is similar to the implementation process of the charge and discharge control for the first battery cell, and is not repeated here. The risk of overcharging of the second battery cell can be reduced, and the risk of overdischarging of the second battery cell can be reduced.

The battery circuit provided by the embodiment of the disclosure can perform independent charge and discharge control on a first battery cell and a second battery cell in the process of charging and discharging the first battery cell and the second battery cell.

In an example, in the process of charging the first battery cell and the second battery cell, if the control chip determines that the first battery cell is in a full-charge state and the second battery cell is not in the full-charge state through the electric quantity values fed back by the first electricity meter and the second electricity meter, the control chip may control the first signal output chip of the first signal output circuit to send the cutoff signal to the first protection chip. When the first protection chip receives the off signal, a high level may be transmitted to the first transistor, so that the first transistor is switched from the on state to the off state. Therefore, the on-off state between the first battery cell and the charging loop is switched from the on state to the off state. At this time, the connection state between the second battery cell and the charging loop is still maintained in a conduction state. In the process of further charging the second battery cell, if the control chip determines that the second battery cell is in a full-charge state through an electric quantity value fed back by the second fuel gauge, the control chip may control a third signal output chip of the second signal output circuit to send a cutoff signal to a third protection chip. Under the condition that the third protection chip receives the cut-off signal, a high level can be sent to the third transistor (Q3), so that the third transistor is switched from the on state to the off state, the connection state between the second battery cell and the charging loop is controlled to be switched from the on state to the off state, and charging of all the battery cells is completed. Through the method and the device, the safe charging of a plurality of battery cells can be realized, and the overcharge risk of the battery cells in the charging process is reduced.

In another example, in the process of discharging the first battery cell and the second battery cell, if the control chip determines that the first battery cell is in the empty power state and the second battery cell is not in the empty power state through the electric quantity values fed back by the first electricity meter and the second electricity meter, the control chip may control the second signal output chip of the first signal output circuit to send the cutoff signal to the second protection chip. When the second protection chip receives the off signal, a high level may be transmitted to the second transistor (Q2) to switch the first transistor from an on state to an off state. Therefore, the on-off state between the first battery cell and the discharge loop is switched from the on state to the off state. At this time, the connection state between the second battery cell and the discharge circuit is still maintained in a conduction state. In the process of further discharging the second battery cell, if the control chip determines that the second battery cell is in an empty state through the electric quantity value fed back by the second fuel gauge, the control chip may control a fourth signal output chip of the second signal output circuit to send a cutoff signal to a fourth protection chip. Under the condition that the fourth protection chip receives the cut-off signal, a high level can be sent to the fourth transistor (Q4), so that the fourth transistor is switched from the on state to the off state, the connection state between the second battery cell and the discharge loop is controlled to be switched from the on state to the off state, and the discharge of all the battery cells is completed. Through the method and the device, safe discharge of a plurality of battery cells can be realized, and the over-discharge risk of the battery cells in the discharge process is reduced.

This is disclosed through the mode to each electric core electric quantity independent monitoring in a plurality of electric cores, can be at the in-process that carries out the charge-discharge to a plurality of electric cores, before each electric core overcharge or overdischarge, make the connection state between this electric core and the charge-discharge return circuit switch to the off-state by the on-state, reduced the possibility that electric core overcharge or overdischarge, can realize carrying out safe charge-discharge to the battery.

Based on the same concept, the embodiment of the disclosure provides a terminal. Wherein the terminal comprises the battery circuit of any one of the embodiments described in the above embodiments of the present disclosure. In the battery circuit, each battery cell in the plurality of battery cells is provided with an independent electric quantity meter, so that each battery cell can be subjected to relatively accurate electric quantity detection. And in the process of charging and discharging a plurality of battery cores, the on-off state between each battery core and the power supply loop can be controlled according to the actual electric quantity of each battery core, and the damage risk of the battery can be reduced.

Based on the same conception, the embodiment of the disclosure also provides a battery circuit control method. The battery circuit control method is applied to a terminal, and the terminal comprises the battery circuit in any one of the embodiments of the disclosure. The following embodiments of the present disclosure will explain the procedure of the battery circuit control method.

Fig. 9 is a flow chart illustrating a battery circuit control method according to an exemplary embodiment. The battery circuit control method is applied to a terminal, which may include the battery circuit according to the above-described embodiment, as shown in fig. 9, and includes the following steps.

In step S11, a plurality of electricity meters are controlled to monitor an electric quantity value of each of a plurality of cells connected in parallel.

In step S12, charge and discharge control is performed on the plurality of parallel-connected battery cells based on the monitored electric quantity value of each of the plurality of electric meters.

The battery circuit control method provided by the embodiment of the disclosure can realize relatively accurate electric quantity monitoring on each of a plurality of parallel-connected battery cores.

In an example, the charging and discharging of each battery cell may be controlled by controlling the on-off state between each battery cell and the power supply loop.

Fig. 10 is a flowchart illustrating another battery circuit control method according to an exemplary embodiment, and as shown in fig. 10, a method for executing step S21 in the battery circuit control method provided in the embodiment of the present disclosure is similar to the method for executing step S11 shown in fig. 9, and is not repeated herein.

In step S22, on/off states between each of the plurality of parallel-connected battery cells and the power supply circuit are controlled based on the monitored electric quantity value of each of the plurality of electric meters.

In the embodiment of the present disclosure, in the process of charging or discharging the battery cells, the charging and discharging of each battery cell may be controlled in a manner of controlling the on-off state between each battery cell and the power supply loop according to the electric quantity value of each battery cell.

Fig. 11 is a flowchart illustrating another battery circuit control method according to an exemplary embodiment, and as shown in fig. 11, the step S31 in the battery circuit control method provided in the embodiment of the present disclosure is similar to the step S11 in fig. 9, and is not repeated herein.

In step S32, in a charging process and/or a discharging process of the plurality of parallel-connected battery cells, based on the monitored electric quantity value of each of the plurality of electric meters, the on-off state between each of the plurality of parallel-connected battery cells and the power supply circuit is controlled.

According to the battery circuit control method provided by the embodiment of the disclosure, the charging and discharging control of each battery cell can be realized in a manner of controlling the on-off state between each battery cell and the power supply loop according to the electric quantity value of each battery cell in the following manner. For example, as shown in fig. 7, the signal output circuit may include a first signal output circuit and a second signal output circuit. The first signal output circuit is used for sending a turn-on signal or a turn-off signal to the first battery protection circuit, and the second signal output circuit is used for sending a turn-on signal or a turn-off signal to the second battery protection circuit.

In an embodiment, the first signal output circuit may send the cut-off signal to the first battery protection circuit through the first signal output chip of the first signal output circuit when the first battery cell is in a full-power state, and may send the cut-off signal to the first battery protection circuit through the second signal output chip of the first signal output circuit when the first battery cell is in an empty-power state. The first battery protection circuit may include a first protection chip for receiving a cutoff signal transmitted from the first signal output chip, and a second protection chip for receiving a cutoff signal transmitted from the second signal output chip. The first protection chip may send a high level to the first transistor of the first battery protection circuit to switch the first transistor from an on state to an off state when receiving the off signal. Because the first transistor and the first battery cell are connected in series to the charging loop, the method can switch the on-off state between the first battery cell and the charging loop from the on state to the off state when the first battery cell is in the full charge state. The second protection chip may transmit a high level to the second transistor of the first battery protection circuit to switch the second transistor from an on state to an off state, in case of receiving the off signal. Because the second transistor and the first battery cell are connected in series to the discharge circuit, the method can switch the on-off state between the first battery cell and the discharge circuit from the on state to the off state when the first battery cell is in the no-power state.

In another embodiment, the second signal output circuit may send the cut-off signal to the second battery protection circuit through a third signal output chip of the second signal output circuit when the second battery cell is in a full-power state, and may send the cut-off signal to the second battery protection circuit through a fourth signal output chip of the second signal output circuit when the second battery cell is in an empty-power state. The second battery protection circuit may include a third protection chip for receiving a cutoff signal transmitted from the third signal output chip, and a fourth protection chip for receiving a cutoff signal transmitted from the fourth signal output chip. The third protection chip can send a high level to the third transistor of the second battery protection circuit when receiving the cut-off signal, so that the third transistor is switched from the on state to the off state. Because the third transistor and the second battery cell are connected in series to the charging loop, the method can switch the on-off state between the second battery cell and the charging loop from the on state to the off state when the second battery cell is in the full-power state. The fourth protection chip may transmit a high level to the fourth transistor of the second battery protection circuit to switch the fourth transistor from an on state to an off state, in case of receiving the off signal. Because the fourth transistor and the second battery cell are connected in series in the discharge loop, the method can switch the on-off state between the second battery cell and the discharge loop from the on state to the off state when the second battery cell is in the no-power state.

In the embodiment of the disclosure, safe charging and discharging of a plurality of battery cells can be realized in the process of charging or discharging the plurality of battery cells connected in parallel.

In an embodiment, in the process of charging a plurality of cells connected in parallel, for each of the plurality of cells, a connection state between the cell and the charging loop may be separately controlled. For example, in the process of charging a plurality of cells connected in parallel, if a first cell is in a full charge state and a second cell is not in the full charge state, the control chip may control a signal output circuit (a first signal output circuit) matched with the first cell, send a cut-off signal to a battery protection circuit (a first battery protection circuit) connected with the first cell, control the connection state between the first cell and the charging loop to be switched from a conducting state to a cut-off state, and keep the connection state between the second cell and the charging loop as the conducting state until the second cell is in the full charge state. Further, when the second battery cell is in a full-charge state, the signal output circuit (second signal output circuit) matched with the second battery cell may be controlled to send a cut-off signal to the battery protection circuit (second battery protection circuit) connected to the second battery cell, so that the connection state between the second battery cell and the charging loop is switched from a conducting state to a cut-off state. Whether the first battery cell and the second battery cell are in a full-charge state or not may be determined by electric quantity values obtained by the first electricity meter and the second electricity meter. For example, it may be determined that the first cell is in the full charge state in a case where it is determined by the first electricity meter that the electric quantity value of the first cell is the full electric quantity value (e.g., 100%). For another example, it may be determined that the second battery cell level is not in the full charge state in a case where it is determined by the second electricity meter that the electric quantity value of the second battery cell is a non-full electric quantity value (e.g., 50%).

In another embodiment, during the process of discharging the plurality of cells connected in parallel, the connection state between the cell and the charging loop may be separately controlled for each of the plurality of cells. For example, in the process of discharging a plurality of cells connected in parallel, if a first cell is in an empty state and a second cell is not in an empty state, the control chip may control a signal output circuit (a first signal output circuit) matched with the first cell, send a cut-off signal to a battery protection circuit (a first battery protection circuit) connected with the first cell, control the connection state between the first cell and the discharge loop to be switched from a conducting state to a cut-off state, and keep the connection state between the second cell and the discharge loop as a conducting state until the second cell is in an empty state. Further, when the second battery cell is in an empty state, the signal output circuit (second signal output circuit) matched with the second battery cell may be controlled to send a cut-off signal to the battery protection circuit (second battery protection circuit) connected to the second battery cell, so that the connection state between the second battery cell and the discharge loop is switched from the on state to the off state. Whether the first battery cell and the second battery cell are in the empty state may be determined by the electric quantity values obtained by the first electricity meter and the second electricity meter. For example, it may be determined that the first cell is in the empty state in a case where it is determined by the first electricity meter that the electric quantity value of the first cell is an empty electric quantity value (e.g., 0%). For another example, it may be determined that the second battery cell is not in the empty state when it is determined by the second electricity meter that the electric quantity value of the second battery cell is a non-empty electric quantity value (e.g., 50%).

In the embodiment of the present disclosure, the current comprehensive electric quantity value of the plurality of electric cores connected in parallel may be determined through the current electric quantity value of each electric core in the plurality of electric cores connected in parallel and the electric quantity value of each electric core in the plurality of electric cores connected in parallel in a full electric state.

In one example, the ratio between the current charge and the value of each cell and the charge and the value of each cell in the full charge state may be determined as the current integrated charge value of the plurality of cells connected in parallel. For example, if the current electric quantity value of the first cell is RM1, the electric quantity value in the full electric state of the first cell is FCC1, the current electric quantity value of the second cell is RM2, and the electric quantity value in the full electric state of the second cell is FCC2, the integrated electric quantity value (SOC) of the first cell and the second cell can be determined in a mode of SOC = (RM 1+ RM 2)/(FCC 1+ FCC 2).

In one embodiment, as shown in fig. 12, the current electric quantity value of the battery cell and the electric quantity value of the battery cell in the full-charge state may be estimated by the electric meter through the open-circuit voltage, the impedance characteristic, and/or other electrical characteristics of the battery cell. And, the plurality of battery cells for determining the comprehensive electric quantity value may be battery cells with the same or different specifications.

In the embodiment of the disclosure, the determined comprehensive electric quantity value can be used as a display electric quantity value of the terminal. Because the display electric quantity value of terminal is synthesized through the electric quantity value of each electric core in a plurality of electric cores and is confirmed, compare in the mode that uses the electric quantity value of single electric core as terminal display electric quantity value, the actual electric quantity condition of a plurality of electric cores of laminating more. The accuracy of the terminal for displaying the electric quantity value can be improved through the method and the device.

In the battery circuit control method provided by the embodiment of the disclosure, the related embodiment is realized by the battery circuit provided by the embodiment of the disclosure. For the points that the description of the control method of the battery circuit in the embodiment of the present disclosure is not exhaustive, please refer to the embodiment described in the battery circuit provided in the embodiment of the present disclosure.

Based on the same conception, the embodiment of the disclosure also provides a battery circuit device.

It is understood that the battery circuit device provided by the embodiments of the present disclosure includes hardware structures and/or software modules for performing the functions. The disclosed embodiments can be implemented in hardware or a combination of hardware and computer software, in combination with the exemplary elements and algorithm steps disclosed in the disclosed embodiments. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure.

Fig. 13 is a block diagram illustrating a battery circuit arrangement according to an exemplary embodiment. Referring to fig. 13, the apparatus 100 includes a monitoring unit 101 and a control unit 102.

The monitoring unit 101 is configured to monitor an electric quantity value of each of the plurality of electric cores connected in parallel. The control unit 102 is configured to perform charge and discharge control on a plurality of parallel-connected battery cells based on an electric quantity value monitored by each of the plurality of electric meters.

In one embodiment, the control unit 102 performs charge and discharge control on a plurality of cells connected in parallel, including: and controlling the on-off state between each battery cell in the plurality of battery cells connected in parallel and the power supply loop.

In one embodiment, the control unit 102 controls the on/off state between each of the multiple cells connected in parallel and the power supply loop in the following manner: and in the charging process and/or the discharging process of the plurality of parallel-connected battery cells, controlling the on-off state between each battery cell of the plurality of parallel-connected battery cells and the power supply loop.

In one embodiment, the plurality of parallel-connected cells includes a first cell and a second cell, and the battery circuit further includes a signal output circuit and a control chip. The control unit 102 controls the on-off state between each of the multiple parallel-connected battery cells and the power supply loop in the charging process of the multiple parallel-connected battery cells in the following manner: in the process of charging a plurality of electric cores connected in parallel, if a first electric core is in a full-charge state and a second electric core is not in the full-charge state, a control chip controls a signal output circuit matched with the first electric core to send a cut-off signal to a battery protection circuit connected with the first electric core, controls the connection state between the first electric core and a charging loop to be switched to the cut-off state from a conducting state, keeps the connection state between the second electric core and the charging loop in the conducting state until the second electric core is in the full-charge state, controls the signal output circuit matched with the second electric core, and sends the cut-off signal to the battery protection circuit connected with the second electric core, so that the connection state between the second electric core and the charging loop is switched to the cut-off state from the conducting state.

In one embodiment, the plurality of parallel-connected cells includes a first cell and a second cell, and the battery circuit further includes a signal output circuit and a control chip. The control unit 102 controls the on-off state between each of the multiple parallel-connected battery cells and the power supply loop in the discharging process of the multiple parallel-connected battery cells in the following manner: in the process of discharging the multiple battery cells connected in parallel, if the first battery cell is in an empty state and the second battery cell is not in an empty state, the control chip controls the signal output circuit matched with the first battery cell to send a cut-off signal to the battery protection circuit connected with the first battery cell, controls the connection state between the first battery cell and the discharge loop to be switched to the cut-off state from the on state, and keeps the connection state between the second battery cell and the discharge loop to be the on state until the second battery cell is in the empty state, controls the signal output circuit matched with the second battery cell to send the cut-off signal to the battery protection circuit connected with the second battery cell, so that the connection state between the second battery cell and the discharge loop is switched to the cut-off state from the on state.

Fig. 14 is a block diagram illustrating another battery circuit arrangement according to an example embodiment. Referring to fig. 14, the battery circuit control apparatus further includes: the determining unit 103 is configured to determine a current comprehensive electric quantity value of the multiple parallel-connected electric cores based on a current electric quantity value of each of the multiple parallel-connected electric cores and an electric quantity value of each of the multiple parallel-connected electric cores in a full electric state, where the comprehensive electric quantity value is a ratio between the current electric quantity and value of each of the multiple parallel-connected electric cores and the electric quantity and value of each of the multiple electric cores in the full electric state.

With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.

Fig. 15 is a block diagram illustrating an apparatus 200 for battery circuit control in accordance with an exemplary embodiment. For example, the apparatus 200 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, and the like.

Referring to fig. 15, the apparatus 200 may include one or more of the following components: a processing component 202, a memory 204, a power component 206, a multimedia component 208, an audio component 210, an input/output (I/O) interface 212, a sensor component 214, and a communication component 216.

The processing component 202 generally controls overall operation of the device 200, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing components 202 may include one or more processors 220 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 202 can include one or more modules that facilitate interaction between the processing component 202 and other components. For example, the processing component 202 can include a multimedia module to facilitate interaction between the multimedia component 208 and the processing component 202.

The memory 204 is configured to store various types of data to support operations at the apparatus 200. Examples of such data include instructions for any application or method operating on device 200, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 204 may be implemented by any type or combination of volatile or non-volatile memory devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.

Power components 206 provide power to the various components of device 200. The power components 206 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the apparatus 200.

The multimedia component 208 includes a screen that provides an output interface between the device 200 and the user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 208 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the device 200 is in an operating mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

The audio component 210 is configured to output and/or input audio signals. For example, audio component 210 includes a Microphone (MIC) configured to receive external audio signals when apparatus 200 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal may further be stored in the memory 204 or transmitted via the communication component 216. In some embodiments, audio component 210 also includes a speaker for outputting audio signals.

The I/O interface 212 provides an interface between the processing component 202 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.

The sensor component 214 includes one or more sensors for providing various aspects of status assessment for the device 200. For example, the sensor assembly 214 may detect an open/closed state of the device 200, the relative positioning of components, such as a display and keypad of the device 200, the sensor assembly 214 may also detect a change in the position of the device 200 or a component of the device 200, the presence or absence of user contact with the device 200, the orientation or acceleration/deceleration of the device 200, and a change in the temperature of the device 200. The sensor assembly 214 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 214 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 214 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 216 is configured to facilitate wired or wireless communication between the apparatus 200 and other devices. The device 200 may access a wireless network based on a communication standard, such as WiFi,4G or 5G, or a combination thereof. In an exemplary embodiment, the communication component 216 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 216 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra Wideband (UWB) technology, bluetooth (BT) technology, and other technologies.

In an exemplary embodiment, the apparatus 200 may be implemented by one or more Application Specific Integrated Circuits (ASICs), digital Signal Processors (DSPs), digital Signal Processing Devices (DSPDs), programmable Logic Devices (PLDs), field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the above-described methods.

In an exemplary embodiment, a non-transitory computer readable storage medium comprising instructions, such as memory 204, that are executable by processor 220 of device 200 to perform the above-described method is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.

It is understood that "a plurality" in this disclosure means two or more, and other words are analogous. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. The singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It will be further understood that the terms "first," "second," and the like are used to describe various information and that such information should not be limited by these terms. These terms are only used to distinguish one type of information from another and do not denote a particular order or importance. Indeed, the terms "first," "second," and the like are fully interchangeable. 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.

It will be further understood that, unless otherwise specified, "connected" includes direct connections between the two without the presence of other elements, as well as indirect connections between the two with the presence of other elements.

It is further to be understood that while operations are depicted in the drawings in a particular order, this is not to be understood as requiring that such operations be performed in the particular order shown or in serial order, or that all illustrated operations be performed, to achieve desirable results. In certain environments, multitasking and parallel processing may be advantageous.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application 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 in 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 to be limited only by the scope of the appended claims.

Claims

1. A battery circuit, comprising:

a plurality of cells connected in parallel;

and the electric meters are consistent with the electric cores in number, and each electric meter is respectively and correspondingly connected with one electric core in parallel.

2. The battery circuit of claim 1, further comprising:

and the battery protection circuit is connected with the plurality of electric cores in parallel connection and is used for controlling the on-off state of a passage between each electric core in the plurality of electric cores in parallel connection and the power supply loop.

3. The battery circuit of claim 2, wherein the plurality of parallel-connected cells comprises a first cell and a second cell, wherein the fuel gauge comprises a first fuel gauge and a second fuel gauge, and wherein the battery protection circuit comprises a first battery protection circuit and a second battery protection circuit;

the first electricity meter is connected in parallel with the first electric core;

the second electricity meter is connected in parallel with the second electric core;

the first battery protection circuit is connected in series with the first battery cell;

the second battery protection circuit is connected in series with the second battery core.

4. The battery circuit according to claim 2 or 3, wherein the battery circuit further comprises a signal output circuit, and a control chip,

the signal output circuit is connected with the battery protection circuit and is used for outputting a switching-on signal or a switching-off signal for controlling the switching-on and switching-off state of a passage between each battery cell of the plurality of battery cells connected in parallel and the power supply loop to the battery protection circuit;

the control chip is connected with the signal output circuit, and is configured to control the signal output circuit to output the on-signal to a battery protection circuit connected to the plurality of parallel-connected battery cells when the plurality of parallel-connected battery cells are charged or discharged, and to control the signal output circuit matched with the battery cell in a full-power state or an empty-power state when it is determined that the battery cell in the full-power state or the empty-power state exists in the plurality of parallel-connected battery cells during the charging process of the plurality of parallel-connected battery cells, and output the off-signal to the battery protection circuit connected to the battery cell in the full-power state or the empty-power state.

5. The battery circuit of claim 4, wherein the plurality of parallel-connected cells differ in a specification, the specification comprising one or more of an impedance value, an open circuit voltage value, and a cell full charge value.

6. A terminal, characterized in that the terminal comprises a battery circuit according to any of claims 1 to 5.

7. A battery circuit control method characterized in that the battery circuit includes a plurality of fuel gauges and a plurality of cells connected in parallel connected to each other in parallel, the battery circuit control method comprising:

controlling the plurality of electricity meters to monitor the electricity quantity value of each of the plurality of parallel-connected electric cores;

and carrying out charge and discharge control on the plurality of parallel-connected battery cores based on the electric quantity value monitored by each of the plurality of electric meters.

8. The battery circuit control method according to claim 7, wherein performing charge/discharge control on the plurality of parallel-connected cells includes:

and controlling the on-off state between each electric core in the plurality of electric cores connected in parallel and the power supply loop.

9. The battery circuit control method of claim 8, wherein controlling the on-off state between each of the plurality of parallel-connected cells and the power supply loop comprises:

and in the charging process and/or the discharging process of the plurality of parallel-connected battery cells, controlling the on-off state between each battery cell of the plurality of parallel-connected battery cells and a power supply loop.

10. The battery circuit control method of claim 9, wherein the plurality of parallel-connected cells comprises a first cell and a second cell, the battery circuit further comprises a signal output circuit, and a control chip;

in the charging process of the plurality of parallel-connected battery cells, controlling the on-off state between each battery cell in the plurality of parallel-connected battery cells and a power supply loop respectively, including:

in the process of charging the plurality of parallel-connected battery cells, if the first battery cell is in a full-charge state and the second battery cell is not in the full-charge state, the control chip controls the signal output circuit matched with the first battery cell to send a cut-off signal to the battery protection circuit connected with the first battery cell, controls the connection state between the first battery cell and the charging loop to be switched from a conducting state to a cut-off state, keeps the connection state between the second battery cell and the charging loop in a conducting state until the second battery cell is in the full-charge state, controls the signal output circuit matched with the second battery cell, and sends the cut-off signal to the battery protection circuit connected with the second battery cell, so that the connection state between the second battery cell and the charging loop is switched from the conducting state to the cut-off state.

11. The battery circuit control method of claim 9, wherein the plurality of parallel-connected cells comprises a first cell and a second cell, and the battery circuit further comprises a signal output circuit and a control chip;

in a discharging process of the plurality of electric cores connected in parallel, controlling on-off states of each electric core in the plurality of electric cores connected in parallel with a power supply loop respectively, including:

in the process of discharging the multiple parallel-connected battery cores, if the first battery core is in an empty state and the second battery core is not in an empty state, the control chip controls the signal output circuit matched with the first battery core to send a cut-off signal to the battery protection circuit connected with the first battery core, controls the connection state between the first battery core and the discharge loop to be switched from a conducting state to a cut-off state, keeps the connection state between the second battery core and the discharge loop in a conducting state until the second battery core is in an empty state, controls the signal output circuit matched with the second battery core, and sends a cut-off signal to the battery protection circuit connected with the second battery core, so that the connection state between the second battery core and the discharge loop is switched from a conducting state to a cut-off state.

12. The battery circuit control method according to claim 7, characterized by further comprising:

determining a current comprehensive electric quantity value of each of the plurality of parallel-connected electric cores based on the current electric quantity value of each of the plurality of parallel-connected electric cores and the electric quantity value of each of the plurality of parallel-connected electric cores in the full electric state, where the comprehensive electric quantity value is a ratio between the current electric quantity and value of each of the plurality of parallel-connected electric cores and the electric quantity and value of each of the plurality of parallel-connected electric cores in the full electric state.

13. A battery circuit control apparatus characterized in that the battery circuit includes a plurality of fuel gauges and a plurality of cells connected in parallel to each other, the battery circuit control apparatus comprising:

the monitoring unit is used for monitoring the electric quantity value of each electric core in the plurality of electric cores connected in parallel;

and the control unit is used for carrying out charge and discharge control on the plurality of parallel-connected battery cores based on the electric quantity value monitored by each of the plurality of electric meters.

14. The battery circuit control device according to claim 13, wherein the control unit performs charge and discharge control on the plurality of cells connected in parallel in the following manner, and includes:

15. The battery circuit control apparatus of claim 14, wherein the control unit controls the on/off state between each of the plurality of parallel-connected cells and the power supply circuit as follows:

16. The battery circuit control apparatus of claim 15, wherein the plurality of parallel-connected cells comprises a first cell and a second cell, the battery circuit further comprises a signal output circuit, and a control chip;

the control unit controls the on-off state between each electric core in the plurality of electric cores connected in parallel and a power supply loop in the charging process of the plurality of electric cores connected in parallel in the following mode:

17. The battery circuit control apparatus of claim 15, wherein the plurality of parallel-connected cells comprises a first cell and a second cell, the battery circuit further comprises a signal output circuit, and a control chip;

the control unit is used for controlling the on-off state between each battery cell in the plurality of battery cells connected in parallel and a power supply loop in the discharging process of the plurality of battery cells connected in parallel in the following way:

18. The battery circuit control apparatus of claim 13, further comprising:

a determining unit, configured to determine a current comprehensive electric quantity value of the multiple parallel-connected electric cores based on a current electric quantity value of each of the multiple parallel-connected electric cores and an electric quantity value of each of the multiple parallel-connected electric cores in a full electric state, where the comprehensive electric quantity value is a ratio between the current electric quantity and value of each of the multiple electric cores and the electric quantity and value of each of the multiple electric cores in the full electric state.

19. A battery circuit apparatus, comprising:

a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to: performing the battery circuit method of any one of claims 7 to 12.

20. A storage medium having stored therein instructions which, when executed by a processor, enable the processor to carry out the battery circuit method of any one of claims 7 to 12.