CN111293754B - Charging system, method, electronic device, and computer-readable storage medium - Google Patents
Charging system, method, electronic device, and computer-readable storage medium Download PDFInfo
- Publication number
- CN111293754B CN111293754B CN202010201732.2A CN202010201732A CN111293754B CN 111293754 B CN111293754 B CN 111293754B CN 202010201732 A CN202010201732 A CN 202010201732A CN 111293754 B CN111293754 B CN 111293754B
- Authority
- CN
- China
- Prior art keywords
- charging
- current
- battery cell
- control signal
- link
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—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
- H02J7/0016—Circuits for equalisation of charge between batteries using shunting, discharge or bypass circuits
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present application provides a charging system, a method, an electronic device, and a computer-readable storage medium, the charging system including: the battery module includes: the battery charging system comprises a first battery cell and a second battery cell, wherein the first battery cell is charged in parallel and arranged on a first charging link, and the second battery cell is arranged on a second charging link; the control assembly is used for generating a first control signal and a second control signal when a first charging current corresponding to the first battery cell is larger than a first current threshold; the current limiting module is respectively connected with the control assembly and the first battery cell, is used for detecting a first charging current, and is also used for reducing the first charging current to a first current threshold value when receiving a first control signal; and the power management module is respectively connected with the control assembly and the battery module and used for adjusting second charging current corresponding to the second battery core to a second current threshold value when receiving a second control signal. This application can control battery module and charge with maximum speed, reduces charge capacity loss.
Description
Technical Field
The present application relates to rechargeable battery technology, and more particularly, to a charging system, method, electronic device, and computer-readable storage medium.
Background
With the development of mobile communication technology, mobile electronic device technology has emerged, and an electronic device includes at least one rechargeable battery cell, and in the case of a plurality of rechargeable battery cells, the plurality of battery cells may be charged in series or in parallel. Because a plurality of electric core capacities are different, the charging current that the series connection was charged is the same, can cause a plurality of electric core electric quantities unbalanced, often can adopt parallelly connected charging.
However, when a plurality of cells are charged in parallel, different charging degrees may be caused, for example, the charging current of one cell exceeds the maximum bearing capacity of the cell, so that the cell triggers the charge cut-off, and another cell is still not full, thereby causing the loss of charging capacity.
Disclosure of Invention
Embodiments of the present application provide a charging system, a charging method, an electronic device, and a computer-readable storage medium, which can reduce a loss of charging capacity.
A charging system, comprising:
a battery module, comprising: the battery charging system comprises a first battery cell arranged on a first charging link and a second battery cell arranged on a second charging link, wherein the first charging link is connected with the second charging link in parallel, and the path impedance of the first charging link is smaller than that of the second charging link;
the control assembly is used for generating a first control signal and a second control signal when a first charging current corresponding to the first battery cell is larger than a first current threshold;
the current limiting module is respectively connected with the control assembly and the first battery cell, is used for detecting the first charging current and transmitting the first charging current to the control assembly, and is further used for reducing the first charging current to the first current threshold when receiving the first control signal;
and the power supply management module is respectively connected with the control assembly and the battery module, is used for charging the first battery cell and the second battery cell, and is also used for adjusting a second charging current corresponding to the second battery cell to a second current threshold value when the second control signal is received.
An electronic device comprises the charging system.
A charging method applied to a charging system including a first cell and a second cell, wherein the first cell is connected in parallel with the second cell, the method comprising:
acquiring a first charging current corresponding to the first battery cell;
generating a first control signal and a second control signal when the first charging current is greater than a first current threshold;
when the first control signal is received, the current limiting module reduces the first charging current to the first current threshold;
when the second control signal is received, the power management module increases a second charging current corresponding to the second electric core to a second current threshold value.
An electronic device comprising a memory and a processor, the memory having stored therein a computer program that, when executed by the processor, causes the processor to perform the steps of the charging method as described.
A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method as described.
The charging system, the method, the electronic device and the computer readable storage medium, wherein the charging system and the battery module comprise: the battery charging system comprises a first battery cell arranged on a first charging link and a second battery cell arranged on a second charging link, wherein the first charging link is connected with the second charging link in parallel, and the path impedance of the first charging link is smaller than that of the second charging link; the control assembly is used for generating a first control signal and a second control signal when a first charging current corresponding to the first battery cell is larger than a first current threshold; the current limiting module is respectively connected with the control assembly and the first battery cell, is used for detecting the first charging current and transmitting the first charging current to the control assembly, and is further used for reducing the first charging current to the first current threshold when receiving the first control signal; and the power supply management module is respectively connected with the control assembly and the battery module, is used for charging the first battery cell and the second battery cell, and is also used for adjusting a second charging current corresponding to the second battery cell to a second current threshold value when the second control signal is received. In the application, charging links where at least two battery cells are located are connected in parallel, and when a first charging current corresponding to a first battery cell reaches a first current threshold of the maximum bearing capacity, the first charging current is limited so as to be reduced to the first current threshold; and simultaneously adjusting a second charging current corresponding to the second electric core to enable the second charging current to reach a second current threshold value of the maximum bearing capacity. This application can control battery module and charge with the maximum speed, furtherly, carries out the current-limiting to first electric core and reduces its electric quantity and reach the rate of saturation, slows down and ends owing to the saturation leads to the fact charging to make the second electric core also can be full of as far as possible, reduces battery module's charge capacity loss.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a diagram of a charging system environment in one embodiment;
FIG. 2 is a circuit diagram of a charging system in one embodiment;
FIG. 3 is a circuit diagram of a charging system in yet another embodiment;
FIG. 4 is a circuit diagram of a charging system in yet another embodiment;
FIG. 5 is a circuit diagram of a charging system in yet another embodiment;
FIG. 6 is a flow diagram of a charging method in one embodiment;
FIG. 7 is a diagram illustrating an internal structure of an electronic device in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
It will be understood that, as used herein, the terms "first," "second," and the like may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, a first cell may be referred to as a second cell, and similarly, a second cell may be referred to as a first cell, without departing from the scope of the present application. The first cell and the second cell are both cells, but they are not the same cell.
The embodiment of the present application provides a charging system 20, which is applied to an electronic Device 10 shown in fig. 1, and in one embodiment, the electronic Device 10 may be a Mobile communication module including a Mobile phone, a tablet computer, a notebook computer, a palmtop computer, a Mobile Internet Device (MID), a wearable Device (e.g., a smart watch, a smart bracelet, a pedometer, etc.), or other electronic communication modules including the charging system 20.
As shown in fig. 2, the charging system 20 includes: a battery module 210, a control component 240, a current limiting module 220, and a power management module 230.
The battery module 210 is used for absorbing electric energy or releasing electric energy, and the battery module 210 includes: the battery charging system comprises a first battery cell arranged on a first charging link and a second battery cell arranged on a second charging link, wherein the first charging link is connected with the second charging link in parallel, and the path impedance of the first charging link is smaller than that of the second charging link.
Specifically, the battery module 210 includes at least two rechargeable battery cells, which may be made of a lithium material, a nickel-hydrogen material, or a graphene material, and is not limited herein. The battery module 210 at least includes a first battery cell and a second battery cell, the first battery cell is located on the first charging link, the second battery cell is located on the second charging link, and the first charging link and the second charging link are connected in parallel. That is, the power management module 230 charges the first battery cell and the second battery cell in parallel. During parallel charging, the voltage drop on the first charging link is equal to the voltage drop on the second charging link. The path impedance of the first charging link is determined by the length, material, device and the like of the first charging link, the path impedance of the second charging link is determined by the length, material, device and the like of the second charging link, and the path impedance of the first charging link where the first electric core is located is smaller than the path impedance of the second charging link where the second electric core is located. That is, in the charging process, the consumption of charging the second battery cell through the second charging link is larger than that of charging the first battery cell through the first charging link. In other words, when the same amount of power is supplied to the first charging link and the second charging link, the first battery cell will first reach saturation, which triggers the charge of the battery module 210 to be cut off, and the second battery cell is still not fully charged. It should be noted that the battery module 210 may include N battery cells (N is a positive integer greater than or equal to 3), the charging links where the N battery cells are located are sequentially connected in parallel, and the power management module 230 is used to charge the N battery cells in parallel.
The control component 240 is configured to generate a first control signal and a second control signal when the first charging current corresponding to the first cell is greater than the first current threshold.
Specifically, after the current limiting module 220 detects a first charging current corresponding to the first electric core, the control component 240 obtains the first charging current from the current limiting module 220, and determines a magnitude relationship between the first charging current and a first pre-stored current threshold. When it is detected that the first charging current is greater than the first current threshold, a first control signal and a second control signal are generated, the first control signal is transmitted to the current limiting module 220, and the second control signal is transmitted to the power management module 230.
And the current limiting module 220 is connected to the control component 240 and the first battery cell, and configured to detect the first charging current and transmit the first charging current to the control component 240, and further configured to reduce the first charging current to a first current threshold when receiving the first control signal.
Specifically, the current limiting module 220 may include a current detection resistor, and may obtain a first charging current corresponding to a first battery cell on the first charging link by using the current detection resistor. The current limiting module 220 may further include a device with a current limiting function, such as a load switch, a current limiting relay, a varistor, an over-current protection chip, etc., capable of performing a current limiting operation when receiving the first control signal. When the current limiting module 220 receives the first control signal, it is identified that the first battery cell is being overcharged, and there is damage to the first battery cell from charging in this state. And after a period of time, the first battery cell saturates the electric quantity, and the first battery cell saturates to trigger the charging of the battery module 210 to be cut off, so that the second battery cell is not fully charged. At this moment, the first charging current is reduced to the first current threshold value, the first battery core can be protected, the first charging current is reduced, the charging rate of the first battery core is reduced, the first battery core and the second battery core can be charged to saturation as much as possible, and the loss of the charging capacity of the battery module 210 is reduced.
The first current threshold refers to a charging current value corresponding to the maximum bearing capacity of the first battery cell. It should be noted that the battery module 210 may include N battery cells (N is a positive integer greater than or equal to 3), and the charging links where the N battery cells are located are connected in parallel. And the path impedances are sequentially arranged into a first charging link, a second charging link, a.
And the power management module 230 is connected to the control module 240 and the battery module 210, respectively, and is configured to charge the first battery cell and the second battery cell, and further configured to adjust a second charging current corresponding to the second battery cell to a second current threshold when receiving a second control signal.
Specifically, the power management module 230 is provided with a power management chip therein, connected to the battery module 210, and configured to charge the battery module 210, and the power management module 230 can also control the battery module 210 to supply power to each functional module of the electronic device. When the second control signal is received, the first battery cell is identified to be abnormally charged, and the first battery cell is damaged by charging in the state. And after a period of time, the first battery cell saturates the electric quantity, and the first battery cell saturates to trigger the charging of the battery module 210 to be cut off, so that the second battery cell is not fully charged. At this moment, the first charging current is reduced to the first current threshold, and the second charging current corresponding to the second battery cell is adjusted to the second current threshold, so that the charging speed of the second battery cell can be increased while the charging rate of the first battery cell is reduced, the second battery cell is fully charged as soon as possible, the first battery cell and the second battery cell can be charged to saturation as far as possible, and the charging capacity loss of the battery module 210 is reduced. And the second current threshold refers to a charging current value corresponding to the maximum bearing capacity of the second battery cell.
In one embodiment, the power management module integrates a battery Temperature detection chip, and can obtain the battery Temperature, such as a Temperature sensor, a thermal imager, or a Negative Temperature Coefficient (NTC) resistor, which is not described herein again. It should be noted that the battery module 210 includes N battery cells (N is a positive integer greater than or equal to 3), and the charging links where the N battery cells are located are connected in parallel. And the path impedances are sequentially arranged into a first charging link, a second charging link, a. And adjusting the charging current of the charging links from the I +1 th charging link to the Nth charging link to a charging current value corresponding to the maximum bearing capacity of the link.
In one embodiment, the control component 240 is further configured to generate a third control signal when the charging capacity of the first cell reaches a capacity saturation value; the current limiting module 220 is further configured to disconnect the first charging link when receiving a third control signal.
Specifically, the current limiting module 220 obtains the first charging current and transmits the first charging current to the control component 240. When the control component 240 detects that the first charging current is greater than the first current threshold, the first control signal and the second control signal are generated. The first control signal identifies that the first battery cell is being overloaded for charging, reduces the first charging current to a first current threshold value, can protect the first battery cell, reduces the first charging current, and slows down the charging rate of the first battery cell. If the control component 240 detects that the charging current of the first cell is limited and the first cell still reaches the charge saturation state faster than the second cell, when the charging power of the first cell reaches the charge saturation value, a third control signal may be generated to control the first charging link to be disconnected, and the third control signal is transmitted to the current limiting module 220. The current limiting module 220 controls the disconnection of the first charging link, and the source management module 230 only charges the second battery cell alone, so that the charging capacity of the second battery cell is saturated. This embodiment can make the charge capacity of first electric core and second electric core all reach saturation to will the charge capacity loss of battery module 210 will be minimum.
In one embodiment, as shown in fig. 3, the current limiting module 220 includes a load switch, disposed on the first charging link, connected in series with the first battery cell, and configured to detect the first charging current, and reduce the first charging current to a first current threshold when receiving the first control signal; and is also configured to disconnect the first charging link when the third control signal is received.
Specifically, the current limiting module 220 is connected in series with the first battery cell and is disposed on the first charging link. The current limiting module 220 may include a load switch, and the load switch may be configured with a current detecting unit capable of obtaining the first charging current and transmitting the first charging current to the control component 240. The control component 240 can compare the first charging current with the first current threshold, generate a first control signal when the first charging current corresponding to the first battery cell exceeds the first current threshold, and transmit the first control signal to the load switch, so that the MOS transistor capable of controlling on/off and provided inside the load switch limits the current of the first charging current. When the control component 240 detects that the charging power of the first battery cell reaches the power saturation value, it generates a third control signal and transmits the third control signal to the current limiting module 220, so that the current limiting module 220 controls the first charging link to be disconnected. Make power management module 230 only charge to the second electric core alone, finally make the electric quantity of charging of first electric core and second electric core all reach the saturation.
In one embodiment, as shown in fig. 4, the load switch includes: a first current detecting resistor for detecting the first charging current and transmitting the first charging current to the control component 240; a current limit switch to reduce the first charging current to a first current threshold when receiving a first control signal; and is also configured to disconnect the first charging link when the third control signal is received.
Specifically, the load switch is integrated with a first current detection resistor and a current limiting switch, and the first current detection resistor obtains the first charging current and may further transmit the first charging current to the control component 240. And the current limiting switch can limit the current of the first charging link and can also control the connection and disconnection of the first charging link. For example, when the control component 240 detects that the first charging current corresponding to the first battery cell is greater than the first current threshold, the first control signal is generated and transmitted to the current-limiting switch, so that the current-limiting switch limits the first charging current, and the first charging current is reduced to the first current threshold. When the control component 240 detects that the charging capacity of the first battery cell reaches the capacity saturation value, it generates a third control signal, and transmits the third control signal to the current-limiting switch, so that the current-limiting switch controls the first charging link to be disconnected, so that the power management module 230 only charges the second battery cell alone, and further, the charging capacity of the second battery cell also reaches saturation.
In one embodiment, as shown in fig. 5, the current limiting module 220 is connected in parallel with the first battery cell, and the current limiting module 220 includes: the protection chip is used for disconnecting the first charging link when receiving a third control signal; and a second current detecting resistor, configured to obtain the detected first charging current, transmit the first charging current to the control component 240, and reduce the first charging current to a first current threshold when receiving the first control signal.
Specifically, the current limiting module 220 integrates the protection chip and the second current detecting resistor, the second current detecting resistor is used to obtain the first charging current and transmit the first charging current to the control component 240, the control component 240 can generate the first control signal and transmit the first control signal to the second current detecting resistor when the first charging current is greater than the first current threshold, and the second current detecting resistor has a current limiting function and can reduce the first charging current to the first current threshold. The protection chip can be connected to the control component 240 by means of I2C, etc., and when the control component 240 detects that the charging capacity of the first battery cell reaches the capacity saturation value, the control component generates a third control signal, and transmits the third control signal to the protection chip, so that the protection chip controls the first charging link to be disconnected. Thereby make power management module 230 only charge to the second electric core alone, further make the electric quantity of charging of first electric core and second electric core all reach the saturation.
In one embodiment, the power management module 230 is further configured to adjust a third charging current when receiving the second control signal, so that the second charging current is adjusted to the second current threshold, where the third charging current is a sum of the first charging current and the second charging current.
Specifically, the power management module is internally provided with a current detection chip which can acquire the sum of the first charging current and the second charging current in real time, namely, the third charging current. When the control component 240 detects that the first charging current is greater than the first current threshold, it generates a first control signal and a second control signal, which identify that the first cell is being overcharged, in which state charging has damage to the first cell. At this time, the first control signal is used for reducing the first charging current to the first current threshold, and the first battery cell can be protected. The control component 240 transmits the second control signal to the power management module 230, and the power management module 230 adjusts the second charging current to the second current threshold by adjusting the third charging current, because the first charging current is limited to the first current threshold, and the third charging current is adjusted to only change the second charging current, so that the charging speed of the second battery cell can be increased while the charging rate of the first battery cell is reduced, and the second battery cell can be fully charged as soon as possible. Make first electric core and second electric core homoenergetic saturation of charging as far as possible, reduce battery module 210's charge capacity loss.
In one embodiment, the power management module 230 includes: the current detecting chip 232 is configured to obtain the third charging current, so as to adjust the third charging current.
Specifically, the power management module 230 is provided with a power management chip therein, connected to the battery module 210, and configured to charge the battery module 210, and the power management module 230 can also control the battery module 210 to supply power to each functional module of the electronic device. The power management chip is an integrated chip and may include a voltage detection chip 231 and a current detection chip 232. The voltage detection chip 231 is configured to detect a terminal voltage of the first charging link and a terminal voltage of the second charging link, so as to monitor a charging state and a discharging state of the first battery cell and the second battery cell. And a current detection chip 232, configured to obtain a third charging current. The third charging current is the sum of the first charging current and the second charging current, and the charging states of the first battery cell and the second battery cell can also be monitored from the side.
In one embodiment, the second charging link is provided with a flexible circuit board path.
Specifically, the path impedance of the first charging link is determined by the length, material, device, etc. of the first charging link, and the path impedance of the second charging link is determined by the length, material, device, etc. of the second charging link. The second charging link is provided with a flexible circuit board path, so that the path impedance of the second charging link is larger than that of the first charging link. In one embodiment, the link length of the second charging link is greater than the link length of the first charging link.
The embodiment of the application also provides electronic equipment, and the electronic equipment comprises the charging system. The charging system includes: battery module, control assembly 240, current limiting module and power management module. Wherein, battery module includes: the battery charging system comprises a first battery cell arranged on a first charging link and a second battery cell arranged on a second charging link, wherein the first charging link is connected with the second charging link in parallel, and the path impedance of the first charging link is smaller than that of the second charging link; the control assembly 240 is configured to generate a first control signal and a second control signal when a first charging current corresponding to the first battery cell is greater than a first current threshold; the current limiting module is connected with the control component 240 and the first battery cell respectively, and is configured to detect a first charging current and transmit the first charging current to the control component 240, and further configured to reduce the first charging current to a first current threshold when receiving a first control signal; and the power management module is respectively connected with the control assembly 240 and the battery module, and is used for charging the first battery cell and the second battery cell and adjusting a second charging current corresponding to the second battery cell to a second current threshold value when receiving a second control signal.
The division of the modules in the charging system 20 is only for illustration, and in other embodiments, the charging system 20 may be divided into different modules as needed to complete all or part of the functions of the charging system 20.
For specific limitations of the charging system 20, reference may be made to the following limitations of the charging method, which are not described herein in detail. The various modules in the charging system 20 described above may be implemented in whole or in part by software, hardware, and combinations thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
An embodiment of the present application provides a charging method, which is applied to a charging system, and as shown in fig. 6, the charging method includes: step 602 to step 608.
Specifically, the battery module includes at least two rechargeable battery cells, which may be made of a lithium material and a nickel-hydrogen material or a graphene material, and the present disclosure is not limited herein. The battery module at least comprises a first battery cell and a second battery cell, the first battery cell is located on a first charging link, the second battery cell is located on a second charging link, and the first charging link and the second charging link are connected in parallel. That is, the power management module charges the first battery cell and the second battery cell in parallel. During parallel charging, the voltage drop on the first charging link is equal to the voltage drop on the second charging link. The path impedance of the first charging link is determined by the length, material, device and the like of the first charging link, the path impedance of the second charging link is determined by the length, material, device and the like of the second charging link, and the path impedance of the first charging link where the first electric core is located is smaller than the path impedance of the second charging link where the second electric core is located. That is, in the charging process, the consumption of charging the second battery cell through the second charging link is larger than that of charging the first battery cell through the first charging link. In other words, when the same amount of power is supplied to the first charging link and the second charging link, the first battery cell will first reach saturation, which triggers the charge of the battery module to be cut off, and the second battery cell is still not fully charged. It should be noted that the battery module may include N battery cells (N is a positive integer greater than or equal to 3), the charging links where the N battery cells are located are sequentially connected in parallel, and the power management module is used to charge the N battery cells in parallel. A first charging current corresponding to the first electric core may be obtained by using the current limiting module.
Specifically, after the current limiting module detects a first charging current corresponding to the first electric core, the control component obtains the first charging current from the current limiting module, and determines a magnitude relation between the first charging current and a first pre-stored current threshold. When the first charging current is detected to be larger than the first current threshold value, a first control signal and a second control signal are generated, the first control signal is transmitted to the current limiting module, and the second control signal is transmitted to the power management module.
specifically, the current limiting module may include a current detection resistor, and the current detection resistor may be used to obtain a first charging current corresponding to the first battery cell on the first charging link. The current limiting module can also comprise a device with a current limiting function, such as a load switch, a current limiting relay, a rheostat, an over-current protection chip and the like, and can perform a current limiting operation when receiving a first control signal. When the current limiting module receives the first control signal, the first battery cell is identified to be charged in an overload state, and the first battery cell is damaged by charging in the overload state. And after a period of time, first electric core will be saturated with the electric quantity, will trigger the charging of battery module after first electric core electric quantity is saturated and end, lead to the second electric core not full of yet. At this moment, the first charging current is reduced to the first current threshold value, the first battery core can be protected, the first charging current is reduced, the charging rate of the first battery core is reduced, the first battery core and the second battery core can be charged to saturation as far as possible, and the loss of the charging capacity of the battery module is reduced.
The first current threshold refers to a charging current value corresponding to the maximum bearing capacity of the first battery cell. It should be noted that the battery module may include N battery cells (N is a positive integer greater than or equal to 3), and the charging links where the N battery cells are located are connected in parallel. And the path impedances are sequentially arranged into a first charging link, a second charging link, a.
Specifically, the power management module is internally provided with a power management chip, is connected with the battery module and is used for charging the battery module, and the power management module can also control the battery module to supply power for each functional module of the electronic equipment. When the second control signal is received, the first battery cell is identified to be abnormally charged, and the first battery cell is damaged by charging in the state. And after a period of time, first electric core will be saturated with the electric quantity, will trigger the charging of battery module after first electric core electric quantity is saturated and end, lead to the second electric core not full of yet. At this moment, the first charging current is reduced to the first current threshold value, the second charging current corresponding to the second battery cell is adjusted to the second current threshold value, the charging speed of the second battery cell can be increased while the charging speed of the first battery cell is reduced, the second battery cell is fully charged as soon as possible, the first battery cell and the second battery cell can be charged to saturation as far as possible, and the charging capacity loss of the battery module is reduced. And the second current threshold refers to a charging current value corresponding to the maximum bearing capacity of the second battery cell.
In one embodiment, the power management module integrates a battery Temperature detection chip, and can obtain the battery Temperature, such as a Temperature sensor, a thermal imager, or a Negative Temperature Coefficient (NTC) resistor, which is not described herein again. It should be noted that the battery module includes N battery cells (N is a positive integer greater than or equal to 3), and the charging links where the N battery cells are located are connected in parallel. And the path impedances are sequentially arranged into a first charging link, a second charging link, a. And adjusting the charging current of the charging links from the I +1 th charging link to the Nth charging link to a charging current value corresponding to the maximum bearing capacity of the link.
It should be understood that, although the steps in the flowcharts of the figures are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a portion of the steps in fig. 6 may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, and the order of performance of the sub-steps or stages is not necessarily sequential, but may be performed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.
In one embodiment, the charging method further includes: generating a third control signal when the charging electric quantity of the first battery cell reaches an electric quantity saturation value; the third control signal is used for controlling the current limiting module to disconnect the first charging link.
Specifically, the first charging current obtained by the current limiting module is transmitted to the control component. When the control component detects that the first charging current is greater than the first current threshold, a first control signal and a second control signal are generated. The first control signal identifies that the first battery cell is being overloaded for charging, reduces the first charging current to a first current threshold value, can protect the first battery cell, reduces the first charging current, and slows down the charging rate of the first battery cell. If the control component detects that the charging current of the first battery cell is limited and the first battery cell is still in a charging saturation state faster than the second battery cell, when the charging electric quantity of the first battery cell reaches an electric quantity saturation value, a third control signal may be generated to control the first charging link to be disconnected, and the third control signal may be transmitted to the current limiting module. The current-limiting module controls the disconnection of the first charging link, and the source management module only charges the second battery cell independently, so that the charging electric quantity of the second battery cell is saturated. This embodiment can make the electric quantity of charging of first electric core and second electric core all reach the saturation to will hang down the charge capacity loss of battery module to the minimum.
In one embodiment, the charging method further includes: step when receiving second control signal, control power management module increases the second charging current that second electricity core corresponds to second electric current threshold value, includes: and when receiving the second control signal, controlling the power management module to adjust a third charging current so as to adjust the second charging current to a second current threshold, wherein the third charging current is the sum of the first charging current and the second charging current.
Specifically, the power management module is internally provided with a current detection chip which can acquire the sum of the first charging current and the second charging current in real time, namely, the third charging current. And when the control component detects that the first charging current is greater than the first current threshold, generating a first control signal and a second control signal to identify that the first battery cell is being overcharged, wherein charging in the state has damage to the first battery cell. At this time, the first control signal is used for reducing the first charging current to the first current threshold, and the first battery cell can be protected. The control assembly transmits the second control signal to the power supply management module, the power supply management module adjusts the third charging current by adjusting the third charging current, and the first charging current is limited to be the first current threshold value, so that the third charging current is adjusted to only change the second charging current, the second charging current is adjusted to the second current threshold value, the charging speed of the second battery cell is increased while the charging speed of the first battery cell is reduced, and the second battery cell is filled with the second control signal as soon as possible. Make first electric core and second electric core homoenergetic saturation of charging as far as possible, reduce the charge capacity loss of battery module.
Fig. 7 is a schematic diagram of an internal structure of an electronic device in one embodiment. As shown in fig. 7, the electronic device includes a processor and a memory connected by a system bus. Wherein, the processor is used for providing calculation and control capability and supporting the operation of the whole electronic equipment. The memory may include a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The computer program can be executed by a processor for implementing a charging method provided in the following embodiments. The internal memory provides a cached execution environment for the operating system computer programs in the non-volatile storage medium. The electronic device may be any terminal device such as a mobile phone, a tablet computer, a PDA (Personal Digital Assistant), a Point of Sales (POS), a vehicle-mounted computer, and a wearable device.
The computer program may be run on a terminal or a server. Program modules constituted by such computer programs may be stored on the memory of the electronic device. Which when executed by a processor, performs the steps of the method described in the embodiments of the present application.
An embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps as the charging method:
acquiring a first charging current corresponding to a first battery cell;
generating a first control signal and a second control signal when the first charging current is greater than a first current threshold;
when receiving a first control signal, controlling the current limiting module to reduce the first charging current to a first current threshold;
when the second control signal is received, the power management module is controlled to increase the second charging current corresponding to the second electric core to a second current threshold value.
A computer program product containing instructions which, when run on a computer, cause the computer to perform a charging method.
Any reference to memory, storage, database, or other medium used herein may include non-volatile and/or volatile memory. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM), which acts as external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms, such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), Enhanced SDRAM (ESDRAM), synchronous Link (Synchlink) DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and bus dynamic RAM (RDRAM).
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 scope of the present application. 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 (12)
1. An electrical charging system, comprising:
a battery module, comprising: the battery charging system comprises a first battery cell arranged on a first charging link and a second battery cell arranged on a second charging link, wherein the first charging link is connected with the second charging link in parallel, and the path impedance of the first charging link is smaller than that of the second charging link;
the control assembly is used for generating a first control signal and a second control signal when a first charging current corresponding to the first battery cell is larger than a first current threshold; the first current threshold refers to a charging current value corresponding to the maximum bearing capacity of the first battery cell;
the current limiting module is respectively connected with the control assembly and the first battery cell, is used for detecting the first charging current and transmitting the first charging current to the control assembly, and is further used for reducing the first charging current to the first current threshold when receiving the first control signal;
the power management module is respectively connected with the control assembly and the battery module, and is used for charging the first battery cell and the second battery cell and adjusting a second charging current corresponding to the second battery cell to a second current threshold value when the second control signal is received; the second current threshold refers to a charging current value corresponding to the maximum bearing capacity of the second battery cell.
2. The charging system according to claim 1,
the control component is further configured to generate a third control signal when the charging capacity of the first battery cell reaches a capacity saturation value;
the current limiting module is further configured to disconnect the first charging link when the third control signal is received.
3. The charging system of claim 2, wherein the current limiting module comprises:
the load switch is arranged on the first charging link, is connected with the first battery cell in series, and is used for detecting the first charging current and reducing the first charging current to the first current threshold when receiving the first control signal; and is further configured to disconnect the first charging link when the third control signal is received.
4. The charging system of claim 3, wherein the load switch comprises:
the first current detection resistor is used for detecting the first charging current and transmitting the first charging current to the control component;
a current limit switch to reduce the first charging current to the first current threshold when the first control signal is received; and is further configured to disconnect the first charging link when the third control signal is received.
5. The charging system of claim 2, wherein the current limiting module is connected in parallel with the first cell, the current limiting module comprising:
the protection chip is used for disconnecting the first charging link when the third control signal is received;
and the second current detection resistor is used for acquiring and detecting the first charging current, transmitting the first charging current to the control assembly and reducing the first charging current to the first current threshold when the first control signal is received.
6. The charging system of claim 1, wherein the power management module is further configured to adjust a third charging current when receiving the second control signal, such that the second charging current is adjusted to the second current threshold,
wherein the third charging current is a sum of the first charging current and the second charging current.
7. The charging system of claim 6, wherein the power management module comprises:
and the current detection chip is used for acquiring the third charging current so as to adjust the third charging current.
8. An electronic device, comprising: the charging system of any one of claims 1 to 7.
9. A charging method is applied to a charging system comprising a first battery cell and a second battery cell, wherein the first battery cell is connected with the second battery cell in parallel, and the path impedance of a charging link where the first battery cell is located is smaller than the path impedance of the charging link where the second battery cell is located; the method comprises the following steps:
acquiring a first charging current corresponding to the first battery cell;
generating a first control signal and a second control signal when the first charging current is greater than a first current threshold; the first current threshold refers to a charging current value corresponding to the maximum bearing capacity of the first battery cell;
when the first control signal is received, controlling a current limiting module to reduce the first charging current to the first current threshold;
when the second control signal is received, controlling a power management module to increase a second charging current corresponding to the second electric core to a second current threshold; the second current threshold refers to a charging current value corresponding to the maximum bearing capacity of the second battery cell.
10. The charging method according to claim 9, characterized in that the method further comprises:
generating a third control signal when the charging electric quantity of the first battery cell reaches an electric quantity saturation value; the third control signal is used for controlling the current limiting module to disconnect the charging link where the first battery cell is located.
11. An electronic device comprising a memory and a processor, the memory having stored therein a computer program that, when executed by the processor, causes the processor to perform the steps of the charging method according to any one of claims 9 to 10.
12. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method according to any one of claims 9 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010201732.2A CN111293754B (en) | 2020-03-20 | 2020-03-20 | Charging system, method, electronic device, and computer-readable storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010201732.2A CN111293754B (en) | 2020-03-20 | 2020-03-20 | Charging system, method, electronic device, and computer-readable storage medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111293754A CN111293754A (en) | 2020-06-16 |
| CN111293754B true CN111293754B (en) | 2021-11-09 |
Family
ID=71031048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010201732.2A Active CN111293754B (en) | 2020-03-20 | 2020-03-20 | Charging system, method, electronic device, and computer-readable storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111293754B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112234683A (en) * | 2020-11-10 | 2021-01-15 | 支付宝(杭州)信息技术有限公司 | Charging control method of electronic equipment and electronic equipment |
| CN114221403B (en) * | 2021-09-26 | 2022-12-02 | 荣耀终端有限公司 | Charging method and charging device |
| CN116937723B (en) * | 2022-04-08 | 2024-07-02 | 荣耀终端有限公司 | Battery control circuit, electronic device and charging control method |
| CN118057701A (en) * | 2022-11-21 | 2024-05-21 | 荣耀终端有限公司 | Foldable electronic device and control method |
| CN116667472B (en) * | 2022-12-06 | 2023-11-24 | 荣耀终端有限公司 | Charging method and device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103311966A (en) * | 2012-03-06 | 2013-09-18 | 北京联动天翼科技有限公司 | Battery self-adaptive control device and method for batteries connected in parallel |
| WO2014156041A1 (en) * | 2013-03-29 | 2014-10-02 | 三洋電機株式会社 | Power supply system and charging and discharging control method for power supply system |
| CN105932745A (en) * | 2016-06-17 | 2016-09-07 | 厦门科华恒盛股份有限公司 | Battery current-limiting control method for multi-module parallel charging |
| CN110571888A (en) * | 2019-09-27 | 2019-12-13 | 惠州拓邦电气技术有限公司 | battery pack control method and device and electrical equipment |
| CN210041361U (en) * | 2019-04-08 | 2020-02-07 | 辉创电子股份有限公司 | Charging and discharging switching module of parallel battery pack |
-
2020
- 2020-03-20 CN CN202010201732.2A patent/CN111293754B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103311966A (en) * | 2012-03-06 | 2013-09-18 | 北京联动天翼科技有限公司 | Battery self-adaptive control device and method for batteries connected in parallel |
| WO2014156041A1 (en) * | 2013-03-29 | 2014-10-02 | 三洋電機株式会社 | Power supply system and charging and discharging control method for power supply system |
| CN105932745A (en) * | 2016-06-17 | 2016-09-07 | 厦门科华恒盛股份有限公司 | Battery current-limiting control method for multi-module parallel charging |
| CN210041361U (en) * | 2019-04-08 | 2020-02-07 | 辉创电子股份有限公司 | Charging and discharging switching module of parallel battery pack |
| CN110571888A (en) * | 2019-09-27 | 2019-12-13 | 惠州拓邦电气技术有限公司 | battery pack control method and device and electrical equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111293754A (en) | 2020-06-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111293754B (en) | Charging system, method, electronic device, and computer-readable storage medium | |
| CN111183561B (en) | Charging control method and device, electronic equipment and computer readable storage medium | |
| EP1122853B1 (en) | Method and apparatus for protection of batteries | |
| KR101975395B1 (en) | Battery pack, and controlling method of the same | |
| CN110710081B (en) | Pre-charge resistor protection apparatus | |
| US9917451B2 (en) | Battery pack and controlling method thereof | |
| CN101465557B (en) | Portable device and battery pack for the same | |
| US9627920B2 (en) | Battery pack and charging method thereof | |
| KR20080012788A (en) | Method and device for charging a battery at elevated temperatures | |
| CN111697275B (en) | Semiconductor device and battery pack | |
| CN110323806B (en) | Charging control method and device, electronic equipment and computer readable storage medium | |
| US20170346314A1 (en) | Battery protection board, battery and mobile terminal | |
| US10355497B2 (en) | Protection of parallel connected cells in battery packs | |
| US9774062B2 (en) | Storage battery, control method of storage battery, control device, and control method | |
| CN110927590A (en) | Method and device for estimating remaining battery capacity, electronic device, and computer-readable storage medium | |
| CN112104015B (en) | Battery charging method and device, terminal equipment and storage medium | |
| CN106471700B (en) | Battery protection plate, battery and mobile terminal | |
| JP2009133676A (en) | Battery pack and charge/discharge method | |
| US11979041B2 (en) | Methods and apparatuses for ultra-portable battery system protection and energy saving | |
| CN116885828A (en) | Switching power supply detection circuit, power supply method, charging device, and storage medium | |
| CN113169385B (en) | Battery pack, circuit system for measuring battery current and equipment for measuring battery current | |
| CN112311032B (en) | Charging method, charging device, electronic device and storage medium | |
| CN116667472B (en) | Charging method and device | |
| EP3955410A1 (en) | Apparatus and method for preventing application of over-current | |
| JP6913754B2 (en) | Battery pack |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |