CN116231800A

CN116231800A - Charging control module, method, intelligent terminal and charging system

Info

Publication number: CN116231800A
Application number: CN202310165545.7A
Authority: CN
Inventors: 赵耀彬; 张建志
Original assignee: Shanghai Chuanying Information Technology Co Ltd
Current assignee: Shanghai Chuanying Information Technology Co Ltd
Priority date: 2023-02-24
Filing date: 2023-02-24
Publication date: 2023-06-06

Abstract

The application provides a charging control module, a charging control method, an intelligent terminal and a charging system, wherein the charging control module comprises a charging unit, at least two batteries, at least two switching tubes and a control unit; the charging unit is connected with the anodes of at least two batteries, the cathodes of the batteries are respectively connected with the first ends of the switching tubes, the second ends of the at least two switching tubes are connected with each other and grounded, and the control unit is connected with the control end of each switching tube; during the charging of each battery by the charging unit and/or during the discharging of each battery, the control unit controls the voltage difference between the two batteries through the switching tube. According to the technical scheme, the voltage difference between at least two batteries can be controlled, voltage balance during charging and discharging is guaranteed, and charging efficiency is improved.

Description

Charging control module, method, intelligent terminal and charging system

Technical Field

The application relates to the technical field of charging, in particular to a charging control module, a charging control method, an intelligent terminal and a charging system.

Background

As the functions of the intelligent terminal are continuously increased, the battery capacity of the intelligent terminal is also increasingly demanded. Currently, a multi-cell parallel connection mode is generally adopted to improve the battery capacity of the battery.

In the process of designing and implementing the present application, the inventors found that at least the following problems exist: when the parallel batteries are charged, a voltage difference is generated between adjacent batteries due to the capacity or impedance of the battery cells, so that the charging between the parallel battery cells is unbalanced, and the capacity of the battery is wasted.

The foregoing description is provided for general background information and does not necessarily constitute prior art.

Disclosure of Invention

Aiming at the technical problems, the application provides a charging control module, a charging control method, an intelligent terminal and a charging system, which can control the voltage difference between at least two batteries, ensure the voltage balance during charging and discharging and improve the charging efficiency.

The application provides a charging control module, which comprises a charging unit, at least two batteries, at least two switching tubes and a control unit; the charging unit is connected with the anodes of at least two batteries, the cathodes of the batteries are respectively connected with the first ends of the switching tubes, the second ends of the at least two switching tubes are connected with each other and grounded, and the control unit is connected with the control end of each switching tube; during the charging of each battery by the charging unit and/or during the discharging of each battery, the control unit controls the voltage difference between the two batteries through the switching tube.

Optionally, in the charging process of each battery, if the voltage difference between the two batteries is greater than or equal to a first threshold value, the control unit controls a switching tube connected with a battery with a larger voltage in the two batteries to be disconnected so as to control the voltage difference to be smaller than the first threshold value.

Optionally, during discharging of each battery, if the voltage difference between the two batteries is greater than or equal to the second threshold, the control unit controls the switching tube connected with the battery with smaller voltage in the two batteries to be disconnected so as to control the voltage difference to be smaller than the second threshold.

Optionally, the battery further comprises at least one current limiting module, wherein the current limiting module is connected between the cathodes of the two batteries, and the control unit is connected with the control end of the current limiting module.

Optionally, in the charging process of each battery, if the voltage difference between the two batteries is greater than or equal to the first threshold, the control unit controls the current limiting module between the two batteries to work, and connects the cathodes of the two batteries, so that the battery with the larger voltage in the two batteries charges the battery with the smaller voltage.

Optionally, in the discharging process of each battery, if the voltage difference between the two batteries is greater than or equal to the second threshold, the control unit controls the current limiting module between the two batteries to work, and connects the cathodes of the two batteries, so that the battery with the larger voltage in the two batteries charges the battery with the smaller voltage.

Optionally, the switch tube is a protection MOS tube or a switch MOS tube on the battery protection chip.

Optionally, the current limiting module includes a current limiting resistor and a control switch tube, a first end of the current limiting resistor is connected with a negative electrode of one of the two batteries, a second end of the current limiting resistor is connected with a first end of the control switch tube, a second end of the control switch tube is connected with a negative electrode of the other of the two batteries, and a control end of the control switch tube is connected with the control unit.

Optionally, the system further comprises a sampling unit, wherein the sampling unit is connected with each battery and the control unit, and is used for collecting the voltage of the battery and sending the voltage of the battery to the control unit.

Optionally, the control unit is configured to calculate a voltage difference between the two batteries according to a voltage of each battery, and control a switching tube connected to a battery with a larger voltage of the two batteries to be disconnected when the voltage difference between the two batteries is greater than or equal to a first threshold value, so as to control the voltage difference between the two batteries to be less than the first threshold value.

Optionally, the sampling unit is configured to collect the negative voltage of the larger-voltage battery and the voltage of the smaller-voltage battery of the two batteries when the switching tube connected to the larger-voltage battery of the two batteries is disconnected.

Optionally, the sampling unit is configured to collect the negative voltage of the smaller voltage battery and the voltage of the larger voltage battery of the two batteries when the switching tube connected to the smaller voltage battery of the two batteries is disconnected.

Optionally, the control unit is further configured to control the switching tubes connected to the two batteries to be turned on when the voltage difference between the two batteries is smaller than the first threshold value and/or the second threshold value, so that the charging unit charges the two batteries until the batteries reach a full-charge state.

Optionally, the control unit is further configured to control the switching tubes connected to the batteries in the two batteries in a full-charge state to be disconnected, and control the switching tubes connected to the two batteries to be turned on after the two batteries in the full-charge state are disconnected by the current limiting module.

The application also provides a charging control method, which comprises the following steps: step S10, in the battery charging process, if the voltage difference between two batteries is greater than or equal to a first threshold value, a switching tube connected with a battery with larger voltage in the two batteries is controlled to be disconnected; and/or the number of the groups of groups,

and step S40, in the discharging process of the batteries, if the voltage difference between the two batteries is larger than or equal to a second threshold value, controlling a switching tube connected with the battery with smaller voltage in the two batteries to be disconnected.

Optionally, the charging control method is applied to a charging control module, and the charging control module comprises a charging unit, at least two batteries, at least two switching tubes and a control unit.

Alternatively, the charge control method may be applied to any of the charge control modules described above.

Optionally, the charging unit is connected with the positive electrode of each battery, the negative electrode of each battery is connected with the first end of a switching tube, and the second end of each switching tube is connected with each other and grounded.

Optionally, the method further comprises: and step S20, if the voltage difference between the two batteries is greater than or equal to a first threshold value and/or a second threshold value, connecting the cathodes of the two batteries so as to charge the battery with the larger voltage in the two batteries to charge the battery with the smaller voltage, and controlling the voltage difference between the two batteries to be smaller than the first threshold value and/or the second threshold value.

Optionally, the method further comprises: and step S30, when the voltage difference of the two batteries is smaller than the first threshold value and/or the second threshold value, controlling the switching tubes connected with the two batteries to be conducted so as to charge the two batteries by the charging unit until the batteries reach a full-charge state.

The application also provides an intelligent terminal, including: the charging control module is used for controlling the charging control module; and/or a memory and a processor, wherein the memory stores a charging control program, and the charging control program realizes the steps of the charging control method when being executed by the processor.

The present application also provides a storage medium storing a computer program which, when executed by a processor, implements the steps of the charge control method as described above.

As described above, the charge control module of the present application includes: the battery charging device comprises a charging unit, at least two batteries, at least two switching tubes and a control unit, wherein the charging unit is connected with the positive electrode of each battery, the negative electrode of each battery is connected with the first end of one switching tube, the second ends of each switching tube are connected with each other and grounded, and the control unit is connected with the control end of each switching tube. During the charging of each battery by the charging unit and/or during the discharging of each battery, the control unit controls the voltage difference between the two batteries through the switching tube. According to the scheme, the voltage difference between at least two batteries can be controlled, voltage balance during charging and discharging is guaranteed, and charging efficiency is improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application. In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.

Fig. 1 is a schematic hardware structure diagram of an intelligent terminal implementing various embodiments of the present application;

fig. 2 is a schematic diagram of a communication network system according to an embodiment of the present application;

fig. 3 is a schematic structural view of a charge control module according to the first embodiment;

fig. 4 is a schematic structural view of a charge control module according to the first embodiment;

fig. 5 is a schematic structural view of a charge control module according to the first embodiment;

fig. 6 is a schematic structural view of a charge control module according to a second embodiment;

fig. 7 is a schematic structural view of a charge control module according to a second embodiment;

fig. 8 is a flow chart of a charge control method according to the third embodiment;

Fig. 9 is a flow chart of a charge control method according to the third embodiment;

fig. 10 is a flow chart of a charge control method according to the third embodiment;

fig. 11 is a flow chart of a charge control method according to the third embodiment;

fig. 12 is a flowchart of a charge control method according to a third embodiment;

fig. 13 is a schematic structural view of a charging system according to a fourth embodiment.

The realization, functional characteristics and advantages of the present application will be further described with reference to the embodiments, referring to the attached drawings. Specific embodiments thereof have been shown by way of example in the drawings and will herein be described in more detail. These drawings and the written description are not intended to limit the scope of the inventive concepts in any way, but to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present application. Rather, they are merely examples of modules and methods consistent with aspects of the present application as detailed in the accompanying claims.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or module that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or module. Without further limitation, the element defined by the phrase "comprising one … …" does not exclude the presence of additional identical elements in a process, method, article, or module comprising such element, and alternatively, elements having the same name in different embodiments of the present application may have the same meaning or may have different meanings, the particular meaning of which is to be determined by its interpretation in this particular embodiment or further in connection with the context of this particular embodiment.

It should be understood that although the terms first, second, third, etc. may be used herein to describe various information, these information should not be limited by these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope herein. The word "if" as used herein may be interpreted as "at … …" or "at … …" or "responsive to a determination", depending on the context. Furthermore, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context indicates otherwise. It will be further understood that the terms "comprises," "comprising," "includes," and/or "including" specify the presence of stated features, steps, operations, elements, components, items, categories, and/or groups, but do not preclude the presence, presence or addition of one or more other features, steps, operations, elements, components, items, categories, and/or groups. The terms "or," "and/or," "including at least one of," and the like, as used herein, may be construed as inclusive, or meaning any one or any combination. For example, "including at least one of: A. b, C "means" any one of the following: a, A is as follows; b, a step of preparing a composite material; c, performing operation; a and B; a and C; b and C; a and B and C ", again as examples," A, B or C "or" A, B and/or C "means" any of the following: a, A is as follows; b, a step of preparing a composite material; c, performing operation; a and B; a and C; b and C; a and B and C). An exception to this definition will occur only when a combination of elements, functions, steps or operations are in some way inherently mutually exclusive.

It should be understood that, although the steps in the flowcharts in the embodiments of the present application are shown in order as indicated by the arrows, these steps are not necessarily performed in order as indicated by the arrows. The steps are not strictly limited in order and may be performed in other orders, unless explicitly stated herein. Moreover, at least some of the steps in the figures may include multiple sub-steps or stages that are not necessarily performed at the same time, but may be performed at different times, the order of their execution not necessarily occurring in sequence, but may be performed alternately or alternately with other steps or at least a portion of the other steps or stages.

The words "if", as used herein, may be interpreted as "at … …" or "at … …" or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrase "if determined" or "if detected (stated condition or event)" may be interpreted as "when determined" or "in response to determination" or "when detected (stated condition or event)" or "in response to detection (stated condition or event), depending on the context.

It should be noted that, in this document, step numbers such as S10 and S20 are adopted, and the purpose of the present invention is to more clearly and briefly describe the corresponding content, and not to constitute a substantial limitation on the sequence, and those skilled in the art may execute S20 first and then execute S10 when implementing the present invention, which is within the scope of protection of the present application.

It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

In the following description, suffixes such as "module", "component", or "unit" for representing elements are used only for facilitating the description of the present application, and are not of specific significance per se. Thus, "module," "component," or "unit" may be used in combination.

The intelligent terminal may be implemented in various forms. For example, the smart terminals described in the present application may include smart terminals such as cell phones, tablet computers, notebook computers, palm computers, personal digital assistants (Personal Digital Assistant, PDA), portable media players (Portable Media Player, PMP), navigation modules, wearable devices, smart bracelets, pedometers, and stationary terminals such as digital TVs, desktop computers, and the like.

The following description will be given taking a mobile terminal as an example, and those skilled in the art will understand that the configuration according to the embodiment of the present application can be applied to a fixed type terminal in addition to elements particularly used for a moving purpose.

Referring to fig. 1, which is a schematic hardware structure of a mobile terminal implementing various embodiments of the present application, the mobile terminal 100 may include: an RF (Radio Frequency) unit 101, a WiFi module 102, an audio output unit 103, an a/V (audio/video) input unit 104, a sensor 105, a display unit 106, a user input unit 107, an interface unit 108, a memory 109, a processor 110, and a power supply 111. Those skilled in the art will appreciate that the mobile terminal structure shown in fig. 1 is not limiting of the mobile terminal and that the mobile terminal may include more or fewer components than shown, or may combine certain components, or a different arrangement of components.

The following describes the components of the mobile terminal in detail with reference to fig. 1:

the radio frequency unit 101 may be used for receiving and transmitting signals during the information receiving or communication process, specifically, after receiving downlink information of the base station, processing the downlink information by the processor 110; and, the uplink data is transmitted to the base station. Typically, the radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 101 may also communicate with networks and other devices via wireless communications. The wireless communication may use any communication standard or protocol including, but not limited to, GSM (Global System of Mobile communication, global system for mobile communications), GPRS (General Packet Radio Service ), CDMA2000 (Code Division Multiple Access, 2000, CDMA 2000), WCDMA (Wideband Code Division Multiple Access ), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access, time Division synchronous code Division multiple access), FDD-LTE (Frequency Division Duplexing-Long Term Evolution, frequency Division duplex long term evolution), TDD-LTE (Time Division Duplexing-Long Term Evolution, time Division duplex long term evolution), and 5G, among others.

WiFi belongs to a short-distance wireless transmission technology, and a mobile terminal can help a user to send and receive e-mails, browse web pages, access streaming media and the like through the WiFi module 102, so that wireless broadband Internet access is provided for the user. Although fig. 1 shows a WiFi module 102, it is understood that it does not belong to the necessary constitution of a mobile terminal, and can be omitted entirely as required within a range that does not change the essence of the invention.

The audio output unit 103 may convert audio data received by the radio frequency unit 101 or the WiFi module 102 or stored in the memory 109 into an audio signal and output as sound when the mobile terminal 100 is in a call signal reception mode, a talk mode, a recording mode, a voice recognition mode, a broadcast reception mode, or the like. Also, the audio output unit 103 may also provide audio output (e.g., a call signal reception sound, a message reception sound, etc.) related to a specific function performed by the mobile terminal 100. The audio output unit 103 may include a speaker, a buzzer, and the like.

The a/V input unit 104 is used to receive an audio or video signal. The a/V input unit 104 may include a graphics processor (Graphics Processing Unit, GPU) 1041 and a microphone 1042, the graphics processor 1041 processing image data of still pictures or video obtained by an image capturing module (e.g., a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 106. The image frames processed by the graphics processor 1041 may be stored in the memory 109 (or other storage medium) or transmitted via the radio frequency unit 101 or the WiFi module 102. The microphone 1042 can receive sound (audio data) via the microphone 1042 in a phone call mode, a recording mode, a voice recognition mode, and the like, and can process such sound into audio data. The processed audio (voice) data may be converted into a format output that can be transmitted to the mobile communication base station via the radio frequency unit 101 in the case of a telephone call mode. The microphone 1042 may implement various types of noise cancellation (or suppression) algorithms to cancel (or suppress) noise or interference generated in the course of receiving and transmitting the audio signal.

The mobile terminal 100 also includes at least one sensor 105, such as a light sensor, a motion sensor, and other sensors. Optionally, the light sensor includes an ambient light sensor and a proximity sensor, optionally, the ambient light sensor may adjust the brightness of the display panel 1061 according to the brightness of ambient light, and the proximity sensor may turn off the display panel 1061 and/or the backlight when the mobile terminal 100 moves to the ear. As one of the motion sensors, the accelerometer sensor can detect the acceleration in all directions (generally three axes), and can detect the gravity and direction when stationary, and can be used for applications of recognizing the gesture of a mobile phone (such as horizontal and vertical screen switching, related games, magnetometer gesture calibration), vibration recognition related functions (such as pedometer and knocking), and the like; as for other sensors such as fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc. that may also be configured in the mobile phone, the detailed description thereof will be omitted.

The display unit 106 is used to display information input by a user or information provided to the user. The display unit 106 may include a display panel 1061, and the display panel 1061 may be configured in the form of a liquid crystal display (Liquid Crystal Display, LCD), an Organic Light-Emitting Diode (OLED), or the like.

The user input unit 107 may be used to receive input numeric or character information and to generate key signal inputs related to user settings and function control of the mobile terminal. Alternatively, the user input unit 107 may include a touch panel 1071 and other input devices 1072. The touch panel 1071, also referred to as a touch screen, may collect touch operations thereon or thereabout by a user (e.g., operations of the user on the touch panel 1071 or thereabout by using any suitable object or accessory such as a finger, a stylus, etc.), and drive the corresponding connection module according to a predetermined program. The touch panel 1071 may include two parts of a touch detection module and a touch controller. Optionally, the touch detection module detects the touch azimuth of the user, detects a signal brought by touch operation, and transmits the signal to the touch controller; the touch controller receives touch information from the touch detection module, converts it into touch point coordinates, and sends the touch point coordinates to the processor 110, and can receive and execute commands sent from the processor 110. Further, the touch panel 1071 may be implemented in various types such as resistive, capacitive, infrared, and surface acoustic wave. The user input unit 107 may include other input devices 1072 in addition to the touch panel 1071. Alternatively, other input devices 1072 may include, but are not limited to, one or more of a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, mouse, joystick, etc., as specifically not limited herein.

Alternatively, the touch panel 1071 may overlay the display panel 1061, and when the touch panel 1071 detects a touch operation thereon or thereabout, the touch panel 1071 is transferred to the processor 110 to determine the type of touch event, and the processor 110 then provides a corresponding visual output on the display panel 1061 according to the type of touch event. Although in fig. 1, the touch panel 1071 and the display panel 1061 are two independent components for implementing the input and output functions of the mobile terminal, in some embodiments, the touch panel 1071 may be integrated with the display panel 1061 to implement the input and output functions of the mobile terminal, which is not limited herein.

The interface unit 108 serves as an interface through which at least one external module can be connected with the mobile terminal 100. For example, the external module may include a wired or wireless headset port, an external power (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a module having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 108 may be used to receive input (e.g., data information, power, etc.) from an external module and transmit the received input to one or more elements within the mobile terminal 100 or may be used to transmit data between the mobile terminal 100 and an external module.

Memory 109 may be used to store software programs as well as various data. The memory 109 may mainly include a storage program area and a storage data area, and alternatively, the storage program area may store an operating system, an application program required for at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, phonebook, etc.) created according to the use of the handset, etc. In addition, memory 109 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device.

The processor 110 is a control center of the mobile terminal, connects various parts of the entire mobile terminal using various interfaces and lines, and performs various functions of the mobile terminal and processes data by running or executing software programs and/or modules stored in the memory 109 and calling data stored in the memory 109, thereby performing overall monitoring of the mobile terminal. Processor 110 may include one or more processing units; preferably, the processor 110 may integrate an application processor and a modem processor, the application processor optionally handling mainly an operating system, a user interface, an application program, etc., the modem processor handling mainly wireless communication. It will be appreciated that the modem processor described above may not be integrated into the processor 110.

The mobile terminal 100 may further include a power source 111 (e.g., a battery) for supplying power to the respective components, and preferably, the power source 111 may be logically connected to the processor 110 through a power management system, so as to perform functions of managing charging, discharging, and power consumption management through the power management system.

Although not shown in fig. 1, the mobile terminal 100 may further include a bluetooth module or the like, which is not described herein.

In order to facilitate understanding of the embodiments of the present application, a communication network system on which the mobile terminal of the present application is based will be described below.

Referring to fig. 2, fig. 2 is a schematic diagram of a communication network system provided in the embodiment of the present application, where the communication network system is an LTE system of a general mobile communication technology, and the LTE system includes a UE (User Equipment) 201, an e-UTRAN (Evolved UMTS Terrestrial Radio Access Network ) 202, an epc (Evolved Packet Core, evolved packet core) 203, and an IP service 204 of an operator that are sequentially connected in communication.

Alternatively, the UE201 may be the terminal 100 described above, which is not described here again.

The E-UTRAN202 includes eNodeB2021 and other eNodeB2022, etc. Alternatively, the eNodeB2021 may connect with other enodebs 2022 over a backhaul (e.g., X2 interface), the eNodeB2021 is connected to the EPC203, and the eNodeB2021 may provide access for the UE201 to the EPC 203.

EPC203 may include MME (Mobility Management Entity ) 2031, hss (Home Subscriber Server, home subscriber server) 2032, other MMEs 2033, SGW (Serving Gate Way) 2034, pgw (PDN Gate Way) 2035 and PCRF (Policy and Charging Rules Function, policy and tariff function entity) 2036, and so on. Optionally, MME2031 is a control node that handles signaling between UE201 and EPC203, providing bearer and connection management. HSS2032 is used to provide registers to manage functions such as home location registers (not shown) and to hold user specific information about service characteristics, data rates, etc. All user data may be sent through SGW2034 and PGW2035 may provide IP address allocation and other functions for UE201, PCRF2036 is a policy and charging control policy decision point for traffic data flows and IP bearer resources, which selects and provides available policy and charging control decisions for a policy and charging enforcement function (not shown).

IP services 204 may include the internet, intranets, IMS (IP Multimedia Subsystem ), or other IP services, etc.

Although the LTE system is described above as an example, it should be understood by those skilled in the art that the present application is not limited to LTE systems, but may be applied to other wireless communication systems, such as GSM, CDMA2000, WCDMA, TD-SCDMA, 5G, and future new network systems (e.g., 6G), etc.

Based on the above-mentioned mobile terminal hardware structure and communication network system, various embodiments of the present application are presented.

First embodiment

Referring to fig. 3, fig. 3 is a schematic structural diagram of a charge control module according to a first embodiment, where the charge control module according to the embodiment of the present application includes:

a charging unit 101, at least two batteries, at least two switches and a control unit 102;

the charging unit 101 is connected with the positive electrode of each battery, the negative electrode of each battery is connected with the first end of one switching tube, the second end of each switching tube is connected with each other and grounded, and the control unit 102 is connected with the control end of each switching tube;

the charging unit 101 is used for charging each battery; the control unit 102 is configured to control a switching tube connected to a larger one of the two batteries to be turned off when the voltage difference between the two batteries is greater than or equal to the first threshold during the charging process of the charging unit 101 for each battery, so as to control the voltage difference between the two batteries to be smaller than the first threshold.

Optionally, since there is a metal trace between each battery and the charging unit, there is an FPC (Flexible Printed Circuit board ) impedance between each battery and the charging unit. And the FPC impedance between each battery and the charging unit is different due to the difference in distance between each battery and the charging unit. Optionally, when the distance between a certain battery and the charging unit is far, the FPC between the battery and the charging unit is large; when the distance between a certain battery and the charging unit is relatively short, the FPC between the battery and the charging unit is relatively small. When the FPC impedance between the battery and the charging unit is larger, the smaller the charging current flowing into the battery is, so that the lower the voltage of the battery is; when the FPC impedance between the battery and the charging unit is small, the larger the charging current flowing into the battery, the higher the voltage of the battery.

Optionally, the ground wire of each battery is a metal wire, when the ground wire is longer, the impedance of the FPC on the ground wire is larger, and when the ground wire is shorter, the impedance of the FPC on the ground wire is smaller. The lower the voltage of the battery is when the FPC impedance on the ground line is large, and the higher the voltage of the battery is when the FPC impedance on the ground line is small. The ground wire can be a wire between the negative electrode of the battery and the ground port, and a longer ground wire can be understood as a longer wire between the negative electrode of the battery and the ground port, and a shorter ground wire can be understood as a shorter wire between the negative electrode of the battery and the ground port.

Optionally, after the charging unit continuously charges all the batteries for a period of time, the FPC impedance between each battery and the charging unit is different, and the FPC impedance on the ground line of each battery is different, so that the charging current flowing into each battery is different, and the electric quantity charged by the parallel batteries in the same unit time in the charging process is different. Alternatively, since the capacities of the different batteries are also different when they are connected in parallel, the amounts of electricity charged by the parallel batteries in the same unit time are also different. When the voltage difference between the two batteries is larger than or equal to a first threshold value, a switching tube connected with a battery with larger voltage in the two batteries is controlled to be disconnected, so that the charging unit stops charging the battery with larger voltage, the voltage difference between the two batteries is reduced, the voltage difference between the two batteries is controlled to be smaller than the first threshold value, at least two batteries can be guaranteed to reach a full charge state, waste of battery capacity is reduced, and the endurance time of the batteries is prolonged.

Alternatively, the voltage of the battery is a voltage difference between the positive electrode and the negative electrode of the battery, and the voltage difference between the two batteries may be a difference between the voltage of the battery with a larger voltage and the voltage of the battery with a smaller voltage, or may be an absolute value of the difference between the voltage with a smaller voltage and the battery with a larger voltage. Alternatively, the voltage difference may be positive, and the first threshold and the second threshold may be determined according to the battery performance, or may be specific values or may be a range, which is not limited herein. Alternatively, the first threshold may be the same or different.

Alternatively, the charging unit may be a distribution box for converting an externally supplied voltage into a voltage required by the terminal load and a voltage required by the battery, for supplying power to the terminal load and charging the battery, and may be used for converting the voltage supplied by the battery into the voltage required by the terminal load when the battery supplies power to the terminal load.

Optionally, the control unit may further control the switching tube connected to the battery with smaller voltage of the two batteries to be disconnected if the voltage difference between the two batteries is greater than or equal to the second threshold in the discharging process of each battery, so as to control the voltage difference between the two batteries to be less than the second threshold, thereby avoiding the situation that part of the batteries have electricity and part of the batteries have no electricity, and reducing the waste of resources.

Alternatively, as shown in fig. 3, the charge control module may include two batteries in parallel: first battery and second battery, and two switching tubes: a first switching tube K1 and a second switching tube K2. The positive pole of the first battery and the positive pole of the second battery are connected with each other and the charging unit 101, the negative pole of the first battery is connected with the first end of the first switch tube K1, the negative pole of the second battery is connected with the first end of the second switch tube K2, the second end of the first switch tube K1 and the second end of the second switch tube K2 are connected with each other and grounded, and the control unit 102 is connected with the control end of the first switch tube K1 and the control end of the second switch tube K2.

Optionally, in the process of charging the first battery and the second battery by the charging unit 101, the first switch tube K1 connected to the first battery and the second switch tube K2 connected to the second battery are closed, and if the voltage difference between the first battery and the second battery is greater than or equal to the first threshold value. Optionally, when the voltage of the first battery is greater than the voltage of the second battery, the control unit 102 controls the first switching tube K1 connected to the first battery to be turned off, so that the charging unit 101 stops charging the first battery, only charges the second battery, and reduces the voltage difference between the first battery and the second battery to control the voltage difference between the first battery and the second battery to be less than the first threshold. Optionally, when the voltage of the second battery is greater than the voltage of the first battery, the control unit 102 controls the second switching tube K2 connected to the second battery to be turned off, so that the charging unit 101 stops charging the second battery, only charges the first battery, and reduces the voltage difference between the first battery and the second battery to control the voltage difference between the second battery and the first battery to be less than the first threshold. Optionally, the first switching tube K1 connected to the first battery and the second switching tube K2 connected to the second battery are disconnected when the charging unit 101 starts to charge the first battery and the second battery, and the first switching tube K1 and the second switching tube K2 are in a closed state, so that the charging unit 101 can charge the first battery and the second battery.

Optionally, during discharging of the first battery and the second battery, the first switch tube K1 connected to the first battery and the second switch tube K2 connected to the second battery are closed, and if the voltage difference between the first battery and the second battery is greater than or equal to the second threshold value. Optionally, when the voltage of the first battery is greater than the voltage of the second battery, the control unit 102 controls the second switching tube K2 connected to the second battery to be turned off, so that the second battery stops discharging, and reduces the voltage difference between the first battery and the second battery to control the voltage difference between the first battery and the second battery to be less than the second threshold. Optionally, when the voltage of the second battery is greater than the voltage of the first battery, the control unit 102 controls the first switching tube K1 connected to the first battery to be turned off, so that the first battery stops discharging, and reduces the voltage difference between the first battery and the second battery to control the voltage difference between the first battery and the second battery to be less than the second threshold.

Optionally, as shown in fig. 4, the charging control module may include N batteries connected in parallel, for example, a first battery, a second battery, a … battery, and an nth battery, where N is an integer greater than 2, and further includes two or more switching tubes, for example, a first switching tube K1, a second switching tube K2, …, and an nth switching tube Kn. The positive pole of first battery, the positive pole of second battery, …, the positive pole interconnect of N battery and be connected with charging unit 101, the first end of first switching tube K1 is connected to the negative pole of first battery, the first end of second switching tube K2 is connected to the negative pole of second battery, …, the first end of N switching tube Kn is connected to the negative pole of N battery, the second end of first switching tube K1, the second end of second switching tube K2, …, the second end of N switching tube Kn interconnect ground connection, the control end of first switching tube K1, the control of second switching tube K2, …, the control end of N switching tube Kn is connected to control unit 101.

Optionally, the charging unit 101 charges the first battery, the second battery, …, and the nth battery, and during the charging process, the first switching tube K1, the second switching tube K2, and the … nth switching tube Kn are in a closed state, if the voltage between the two batteries is greater than or equal to the first threshold. Optionally, when the voltage difference between the second battery and the third battery is greater than or equal to the first threshold, and the voltage of the second battery is greater than the voltage of the third battery, the control unit 102 controls the second switch tube K2 connected to the second battery to be turned off, so that the charging unit 101 stops charging the second battery, and reduces the voltage difference between the second battery and the third battery, so as to control the voltage difference between the second battery and the third battery to be less than the first threshold. Optionally, when the voltage of the third battery is greater than the voltage of the second battery, the control unit 102 controls the third switching tube K3 connected to the third battery to be turned off, so that the charging unit 101 stops charging the third battery, and reduces the voltage difference between the third battery and the second battery to control the voltage difference between the third battery and the second battery to be less than the first threshold. Optionally, when the voltage of the first battery and the voltage of the third battery are greater than or equal to the first threshold, the control unit 102 controls the first switching tube K1 connected to the first battery to be turned off, so that the charging unit 101 stops charging the first battery, reduces the voltage difference between the first battery and the third battery to control the voltage difference between the first battery and the third battery to be smaller than the first threshold, and when the voltage of the third battery is greater than the voltage of the first battery, the control unit 102 controls the third switching tube K3 connected to the third battery to be turned off, so that the charging unit 101 stops charging the third battery, reduces the voltage difference between the third battery and the first battery to control the voltage difference between the third battery and the first battery to be smaller than the first threshold.

Optionally, during the charge and discharge of the first battery, the second battery, …, and the nth battery, the first switching tube K1, the second switching tube K2, and the … nth switching tube Kn are in a closed state, and if the voltage between the two batteries is greater than or equal to the second threshold. Optionally, when the voltage difference between the second battery and the third battery is greater than or equal to the second threshold, and the voltage of the second battery is greater than the voltage of the third battery, the control unit 102 controls the third switching tube K3 connected to the third battery to be turned off, so that the third battery stops discharging, and reduces the voltage difference between the second battery and the third battery, so as to control the voltage difference between the second battery and the third battery to be less than the second threshold. Optionally, when the voltage of the third battery is greater than the voltage of the second battery, the control unit 102 controls the second switching tube K2 connected to the second battery to be turned off, so that the second battery stops discharging, and reduces the voltage difference between the third battery and the second battery to control the voltage difference between the third battery and the second battery to be less than the second threshold. Optionally, each switch tube can be a protection MOS tube on the battery protection chip, so that the protection MOS not only has the functions of overcharge prevention/overdischarge prevention/charge overcurrent/discharge overcurrent/short circuit protection, but also can control the voltage difference between batteries, ensure that at least two batteries can reach a full charge state, reduce the waste of battery capacity, and save layout area. Alternatively, the switching tube may be another separate MOS tube.

Alternatively, as shown in fig. 5, the charge control module may include a sampling unit 104, where the sampling unit 104 is connected to each battery and the control unit 102, for collecting the voltage of each battery. Alternatively, the positive electrode and the negative electrode of the battery are connected to acquire a voltage difference between the positive electrode and the negative electrode of the battery, i.e., the voltage of the battery. After the sampling unit 104 collects the voltage of each battery and sends the voltage of each battery to the control unit 102, the control unit 102 may calculate the voltage difference between each two batteries according to the voltage of each battery, and when the voltage difference between the two batteries is greater than or equal to the first threshold, control the switching tube connected to the battery with the greater voltage of the two batteries to be disconnected, so that the charging unit 101 stops charging the battery with the greater voltage, so as to control the voltage difference between the two batteries to be less than the first threshold.

Alternatively, during the battery charging process, the sampling unit 104 may collect the voltage of the battery with smaller voltage and the negative voltage of the battery with larger voltage, and send the voltages to the control unit 102. Since the voltage difference between the two batteries is large, the FPC impedance between the two batteries is small, and the value of the FPC impedance can be disregarded at this time, the positive voltage of the battery with the large voltage in the two batteries is the same as the positive voltage of the battery with the small voltage. Since the negative electrode of the battery with the smaller voltage is grounded, the negative electrode voltage is the reference voltage, so the control unit 102 can calculate the positive electrode voltage of the battery with the smaller voltage according to the voltage of the battery with the smaller voltage, further know the positive electrode voltage of the battery with the larger voltage, and calculate the voltage of the battery with the larger voltage according to the positive electrode voltage of the battery with the larger voltage and the negative electrode voltage of the battery with the larger voltage. Optionally, the control unit 102 may further calculate the voltage between the two batteries according to the voltage of the battery with the higher voltage and the voltage of the battery with the lower voltage, and when the voltage between the two batteries is less than the first threshold and/or the second threshold, control the switch tube connected to the two batteries to be closed, so that the charging unit can continue to charge the two batteries until each battery reaches a full charge state.

In this embodiment, the charging control module further includes a terminal load 105, where the terminal load 105 is connected to the charging unit 101, and the charging unit 101 may further supply power to the terminal load 105, so that the charging unit 101 may supply power to the terminal load 102 and charge each battery. The control unit 102 may control the switching tube connected to the larger one of the two batteries to be disconnected when the voltage difference between the two batteries is greater than or equal to the first threshold during the charging process of the charging unit 101 for the terminal load 102 and each battery, so as to control the voltage difference between the two batteries to be smaller than the first threshold. Alternatively, the end load may be, for example, a CPU, GPU, screen, or the like.

Alternatively, the sampling unit 104 may not be able to acquire the voltage of the smaller one of the two batteries after the switching tube connected to the smaller one is turned off. Alternatively, during the discharging process of the battery, the sampling unit 104 may collect the negative voltage of the battery with smaller voltage and the voltage of the battery with larger voltage of the two batteries, and send the voltages to the control unit 102.

Since the voltage difference between the two batteries is large, the FPC impedance between the two batteries is small, and the value of the FPC impedance can be disregarded at this time, the positive voltage of the battery with the large voltage in the two batteries is the same as the positive voltage of the battery with the small voltage. Alternatively, since the negative electrode of the battery with the larger voltage is grounded, the negative electrode voltage is the reference voltage, so the control unit 102 can calculate the positive electrode voltage of the battery with the larger voltage according to the voltage of the battery with the larger voltage, further know the positive electrode voltage of the battery with the smaller voltage, and calculate the voltage of the battery with the smaller voltage according to the positive electrode voltage of the battery with the smaller voltage and the negative electrode voltage of the battery with the smaller voltage. Optionally, the control unit 102 may also calculate the voltage between the two batteries according to the voltage of the battery with the larger voltage and the voltage of the battery with the smaller voltage, and when the voltage between the two batteries is smaller than the second threshold, control the switching tube connected to the two batteries to close, so that each battery may discharge, and optionally, power the load.

In some embodiments, in the charging or discharging process of each battery, the sampling unit may collect the voltage of each battery according to a first preset time interval, so that when the voltage between two batteries is greater than or equal to a first threshold or a second threshold, the corresponding switching tube can be turned off in time. Optionally, in the charging process, after the switching tube for controlling the connection of the battery with the larger voltage in the two batteries is disconnected, the sampling unit may collect the negative voltage of the battery with the larger voltage and the voltage of the battery with the smaller voltage in the two batteries according to a second preset time interval, so as to calculate the voltage difference between the two batteries, and the control voltage difference is smaller than the first threshold. Alternatively, the first preset time interval and the second preset time interval may be the same time interval or different time intervals. In the discharging process, after the switching tube for controlling the connection of the battery with smaller voltage in the two batteries is disconnected, the sampling unit can collect the negative voltage of the battery with smaller voltage in the two batteries and the voltage of the battery with larger voltage according to a second preset time interval so as to calculate the voltage difference between the two batteries, and the control voltage difference is smaller than a second threshold value.

Optionally, as shown in fig. 5, the charging control module may further comprise a charging interface 106, where the charging interface 106 is used to enable a wired connection of an external charging device to the charging unit 101. When the external charging device is a wired charging device, a charging connection line, such as a universal serial bus (Universal Serial Bus, USB) data line, is provided between the external charging device and the terminal device, and the charging interface may be a USB interface.

Optionally, the charging control module may further include a plurality of positive electrode switch tubes, a first end of each positive electrode switch tube is connected to a positive electrode of a battery, a second end of each positive electrode switch tube is connected to a charging unit, and a control end of each positive electrode switch tube is connected to the control unit. The control unit may also control the positive switching tube and the switching tube connected to the battery with the larger voltage in the two batteries to be disconnected when the voltage difference between the two batteries is greater than or equal to the first threshold value in the process of charging each battery by the charging unit, so as to control the voltage difference between the two batteries to be smaller than the first threshold value. It should be noted that, the positive electrode switch tube may be PMOS or NMOS, and when the positive electrode switch tube is NMOS, a boost circuit needs to be added due to the higher voltage of the positive electrode of the battery, so that the NMOS can be turned on.

Optionally, in the charging process, the control unit is further configured to control the switching tube connected to the two batteries to be turned on when the voltage difference between the two batteries is smaller than the first threshold, so that the charging unit can continue charging the two batteries until each battery reaches a full-charge state. Optionally, during discharging, the control unit may further control the switching tube connected to the two batteries to be turned off when the voltage difference between the two batteries is smaller than the second threshold value, so that each battery may supply power to the load.

Optionally, the control unit is further configured to control the switching tube connected to the battery in the full-charge state to be disconnected, and simultaneously control the current limiting module to be disconnected, and control the switching tube connected to the two batteries to be connected after the two batteries reach the full-charge state, so as to realize the first full-charge and the first-break.

The utility model provides a charge control module, when the voltage difference between two batteries is greater than or equal to first threshold value, the switching tube that voltage is great battery connection among these two batteries is disconnected for charging unit stops to charge for the great battery of voltage, reduces the voltage difference between these two batteries, with the voltage difference between these two batteries of control being less than first threshold value, can guarantee that at least two batteries all can reach full charge state, reduces the waste of battery capacity, improves the duration of battery.

Second embodiment

Referring to fig. 6, fig. 6 is a schematic structural diagram of a charge control module according to a first embodiment, where the charge control module according to the embodiment of the present application includes: a charging unit 101, at least two batteries, at least two switches, at least one current limiting module 103 and a control unit 102;

the charging unit 101 is connected with the positive electrode of each battery, the negative electrode of each battery is connected with the first end of a switching tube, the second end of each switching tube is connected with each other and grounded, each current limiting module 103 is connected between the negative electrodes of the two batteries, and the control unit 102 is connected with the control end of each switching tube;

alternatively, the charging unit 101 is used to charge each battery; the control unit 102 is configured to control, during charging of each battery by the charging unit 101, if a voltage difference between two batteries is greater than or equal to a first threshold, to disconnect a switching tube connected to a battery with a larger voltage among the two batteries, and to operate the current limiting module 103 between the two batteries, and to connect cathodes of the two batteries so that the battery with the larger voltage among the two batteries charges a battery with a smaller voltage, so as to control the voltage difference between the two batteries to be smaller than the first threshold.

Optionally, in the process of charging each battery by the charging unit, if the voltage difference between the two batteries is greater than or equal to the first threshold value, the switching tube connected with the battery with the larger voltage in the two batteries is controlled to be disconnected, so that the charging unit stops charging the battery with the larger voltage in the two batteries, and the voltage difference between the two batteries is reduced. Optionally, the current limiting module is controlled to work so as to communicate the cathodes of the two batteries, so that the battery with larger voltage in the two batteries can charge the battery with smaller voltage in the two batteries, the voltage difference between the two batteries is further reduced, the voltage difference between the two batteries is controlled to be smaller than a first threshold value, at least two batteries can reach a full-charge state, waste of battery capacity is reduced, and the endurance time of the batteries is prolonged.

Optionally, during discharging of each battery, if the voltage difference between the two batteries is greater than or equal to the second threshold, the control unit may control the switching tube connected to the battery with the smaller voltage of the two batteries to be disconnected, so that the battery with the smaller voltage stops discharging. Optionally, the current limiting module between the two batteries can be controlled to work at the same time, and the cathodes of the two batteries are communicated to enable the battery with larger voltage in the two batteries to charge the battery with smaller voltage, so that the voltage difference between the two batteries is controlled to be smaller than a second threshold value, the situation that part of the batteries have electricity and the part of the batteries have no electricity in the discharging process is avoided, and the waste of resources is reduced.

Alternatively, as shown in fig. 6, the charge control module may include two batteries in parallel: first battery and second battery, and two switching tubes: a first switching tube K1 and a second switching tube K2, and a current limiting module 103. The positive pole of first battery and the positive pole interconnect of second battery and be connected with charging unit 101, the first end of first switch tube K1 is connected to the negative pole of first battery, the first end of second switch tube K2 is connected to the negative pole of second battery, the second end interconnect ground connection of first switch tube K1 and second switch tube K2, the negative pole of first battery is connected to the first end of current limiting module 103, the negative pole of second battery is connected to the second end of current limiting module 103, the control unit 102 connects the control end of first switch tube K1 and the control end of second switch tube K2 and the control end of current limiting module 103.

In the process of charging the first battery and the second battery by the charging unit 101, if the voltage difference between the first battery and the second battery is greater than or equal to the first threshold value, when the voltage of the first battery is greater than the voltage of the second battery, the control unit 102 controls the first switch tube K1 connected with the first battery to be turned off, so that the charging unit 101 stops charging the first battery, only charges the second battery, and reduces the voltage difference between the first battery and the second battery. Optionally, the current limiting module 103 is controlled to operate simultaneously, so that the negative electrode of the first battery is communicated with the negative electrode of the second battery, thereby enabling the first battery to charge the second battery, and optionally, the voltage difference between the first battery and the second battery is reduced to control the voltage difference between the first battery and the second battery to be smaller than the first threshold. When the voltage of the second battery is greater than the voltage of the first battery, the control unit 102 controls the second switch tube K2 connected with the second battery to be disconnected, so that the charging unit 101 stops charging the second battery, only charges the first battery, the voltage difference between the first battery and the second battery is reduced, meanwhile, the current limiting module 103 is controlled to work, so that the negative electrode of the first battery is communicated with the negative electrode of the second battery, the second battery can charge the first battery, and the voltage difference between the second battery and the first battery is further reduced, so that the voltage difference between the second battery and the first battery is controlled to be smaller than a first threshold value.

Optionally, during the discharging process of the first battery and the second battery, if the voltage difference between the first battery and the second battery is greater than or equal to the second threshold value, when the voltage of the first battery is smaller than the voltage of the second battery, the control unit 102 controls the first switching tube K1 connected to the first battery to be turned off, so that the first battery stops discharging, and the voltage difference between the first battery and the second battery is reduced. Optionally, the current limiting module 103 is controlled to operate simultaneously, so that the negative electrode of the first battery is communicated with the negative electrode of the second battery, and then the second battery can charge the first battery, and the voltage difference between the first battery and the second battery is further reduced, so as to control the voltage difference between the first battery and the second battery to be smaller than the second threshold value. Optionally, when the voltage of the second battery is smaller than the voltage of the first battery, the control unit 102 controls the second switching tube K2 connected with the second battery to be turned off, so that the second battery stops discharging, reduces the voltage difference between the first battery and the second battery, and simultaneously controls the current limiting module 103 to operate, so that the negative electrode of the first battery is communicated with the negative electrode of the second battery, and further, the first battery can charge the second battery, and further, the voltage difference between the second battery and the first battery is reduced, so that the voltage difference between the second battery and the first battery is controlled to be smaller than a second threshold value.

Optionally, as shown in fig. 7, the charge control module may include N batteries connected in parallel, optionally, the first battery, the second battery, …, and the nth battery, where N is an integer greater than 2, and the charge control module further includes two or more switching tubes, for example, a first switching tube K1, a second switching tube K2, …, and an nth switching tube Kn, and the charge control module may further include N (N-1)/2 current limiting modules 103, that is, one current limiting module 103 is connected between the cathodes of each two batteries, and each current limiting module 103 is independent from each other. Alternatively, only the current limiting module between the first battery and the second battery, the current limiting module between the first battery and the nth battery, and the current limiting module between the second battery and the nth battery are shown in fig. 7.

Optionally, the charging unit 101 charges the first battery, the second battery, …, and the nth battery, and during charging, the first switching tube K1, the second switching tube K2, and the … nth switching tube Kn are in a closed state. If the voltage between the two batteries is greater than or equal to the first threshold, optionally, the voltage difference between the second battery and the third battery is greater than or equal to the first threshold, when the voltage of the second battery is greater than the voltage of the third battery, the control unit 102 controls the second switching tube K2 connected with the second battery to be disconnected, so that the charging unit 101 stops charging the second battery, reduces the voltage difference between the second battery and the third battery, and simultaneously controls the current limiting module 103 between the second battery and the third battery to operate so as to communicate the negative electrode of the second battery with the negative electrode of the third battery, so that the second battery can charge the third battery, and further reduces the voltage difference between the second battery and the third battery, so as to control the voltage difference between the second battery and the third battery to be smaller than the first threshold. Optionally, when the voltages of the first battery and the third battery are greater than or equal to the first threshold, the control unit 102 controls the first switch tube K1 connected to the first battery to be turned off, so that the charging unit 101 stops charging the first battery, reduces the voltage difference between the first battery and the third battery, and simultaneously controls the current limiting module 103 between the first battery and the third battery to operate so as to connect the negative electrode of the first battery and the negative electrode of the third battery, so that the first battery can charge the third battery, and further reduces the voltage difference between the first battery and the third battery, so as to control the voltage difference between the first battery and the third battery to be smaller than the first threshold.

Optionally, during discharging, if the voltage between the two batteries is greater than or equal to a second threshold, for example, the voltage difference between the second battery and the third battery is greater than or equal to the second threshold, and when the voltage of the second battery is less than the voltage of the third battery, the control unit 102 controls the second switching tube K2 connected to the second battery to be turned off, so that the second battery stops discharging, and reduces the voltage difference between the second battery and the third battery, and simultaneously controls the current limiting module 103 between the second battery and the third battery to operate so as to connect the negative electrode of the second battery and the negative electrode of the third battery, so that the third battery can charge the second battery, and further reduces the voltage difference between the second battery and the third battery, so as to control the voltage difference between the second battery and the third battery to be less than the second threshold.

In this example, the current limiting module may include a current limiting resistor and a control switch tube, where a first end of the current limiting resistor is connected to a negative electrode of one of the two batteries, a second end of the current limiting resistor is connected to a first end of the control switch tube, a second end of the control switch tube is connected to a negative electrode of the other of the two batteries, a control end of the control switch tube is connected to the control unit, the current limiting resistor is used to regulate a charging voltage when the battery with a larger voltage is charged by the battery with a smaller voltage, and the control switch tube is used to control whether to connect the negative electrodes of the two batteries, i.e. to control whether the current limiting module works. The control switch tube can be a MOS tube, for example.

Optionally, the charging control module may further include at least two positive electrode switching tubes, a first end of each positive electrode switching tube is connected to a positive electrode of a battery, a second end of each positive electrode switching tube is connected to a charging unit, a control end of each positive electrode switching tube is connected to the control unit, and the charging control module may further include at least two positive electrode current limiting modules connected between every two positive electrode switching tubes. The control unit may also control, in a charging process of the charging unit for each battery, the positive switching tube and the switching tube connected to the battery with the larger voltage in the two batteries to be disconnected if the voltage difference between the two batteries is greater than or equal to the first threshold value, so that the charging unit stops charging the battery with the larger voltage. Meanwhile, the control unit can also control the current limiting module between the cathodes of the two batteries and the current limiting module between the anodes of the two batteries to work so that the anodes of the two batteries are communicated, the cathodes are also communicated, the battery with larger voltage can charge the battery with smaller voltage, and the voltage difference between the two batteries is controlled to be smaller than a first threshold value. Alternatively, the positive current limiting module may have the same structure as the current limiting module, for example, including a current limiting resistor and a control transistor.

According to the charging control module, when the voltage difference between the two batteries is larger than or equal to the first threshold value, the switching tube connected with the battery with larger voltage in the two batteries is controlled to be disconnected, so that the charging unit stops charging for the battery with larger voltage, the voltage difference between the two batteries is reduced, meanwhile, the current limiting module between the two batteries is controlled to work, the battery with larger voltage in the two batteries can charge for the battery with smaller voltage, the voltage difference between the two batteries is further reduced, the voltage difference between the two batteries is controlled to be smaller than the first threshold value, the fact that the at least two batteries can all reach a full charging state can be guaranteed, waste of battery capacity is reduced, and the endurance time of the battery is prolonged.

Third embodiment

The embodiment of the application shows a charging control method, which can be applied to the charging control module in the above embodiment, and includes the following steps:

step S10: in the battery charging process, if the voltage difference between the two batteries is greater than or equal to a first threshold value, a switching tube for controlling the connection of the battery with larger voltage in the two batteries is disconnected.

Optionally, the charging unit is connected with the anodes of at least two batteries, the cathode of each battery is connected with the first end of one switching tube, and the second end of each switching tube is connected with each other and grounded. The charging unit is used for charging each battery, and in the process of charging each battery, if the voltage difference between the two batteries is larger than or equal to a first threshold value, the switching tube connected with the battery with larger voltage in the two batteries is controlled to be disconnected, so that the charging unit stops charging the battery with larger voltage in the two batteries, and the voltage difference between the two batteries is reduced, so that the voltage difference between the two batteries is controlled to be smaller than the first threshold value.

Optionally, in the process that the charging unit charges at least two batteries, the voltage of each battery can be detected, the voltage difference between every two batteries is calculated, and if the voltage difference between the two batteries is greater than or equal to a first threshold value, the switching tube connected with the voltage with the greater voltage in the two batteries is controlled to be disconnected, so that the voltage difference between the two batteries is controlled to be smaller than the first threshold value.

Optionally, as shown in fig. 8, after step S10 is performed, step S20 may be further performed, where if the voltage difference between the two batteries is greater than or equal to the first threshold, the cathodes of the two batteries are connected to charge the battery with the higher voltage among the two batteries to charge the battery with the lower voltage, so as to control the voltage difference between the two batteries to be less than the first threshold

Optionally, as shown in fig. 8, after step S10 is performed, step S20 may also be performed, where if the voltage difference between the two batteries is greater than or equal to the second threshold, the cathodes of the two batteries are connected, so that the battery with the greater voltage in the two batteries charges the battery with the smaller voltage, so as to control the voltage difference between the two batteries to be less than the second threshold.

Alternatively, the current limiting module between the cathodes of the two batteries may be controlled to operate to communicate with the cathodes of the two batteries.

Optionally, as shown in fig. 9, after step S10 is performed, step S30 may be further performed, where when the voltage difference between the two batteries is smaller than the first threshold value and/or the second threshold value, a switching tube connected to the two batteries may be further controlled to be turned on, so as to control the charging unit to charge the battery with the larger voltage in the two batteries until the battery reaches a full-charge state.

Alternatively, as shown in fig. 10, step S30 may also be performed after steps S10 and S20 are performed.

Optionally, as shown in fig. 11, after step S10 is performed, step S40 may be performed, where during discharging of each battery, if the voltage difference between the two batteries is greater than or equal to the second threshold, the switching tube connected to the battery with the smaller voltage of the two batteries is controlled to be turned off, so as to control the voltage difference between the two batteries to be less than the second threshold. Then, as shown in fig. 12, step S50 may be further performed, where if the voltage difference between the two batteries is less than the first threshold, the switching tube connected to the two batteries is controlled to be closed, so that each battery may continue to discharge, and optionally, power the load. Alternatively, step S40 may be performed after steps S10, S20, and S30 are performed.

Alternatively, the execution subject of the charge control method in the present embodiment may be the control unit in the above-described embodiment.

The embodiment of the application also provides an intelligent terminal, which comprises the charging control module, and/or a memory and a processor, wherein the memory stores a charging control program, and the charging control program is executed by the processor to realize the steps of the charging control method in any embodiment.

The embodiment of the application further provides a charging system, as shown in fig. 13, including the above-mentioned intelligent terminal 100 and external power supply device 200, where the external power supply device 200 is connected with the intelligent terminal 100, and is used for supplying power to the intelligent terminal 100.

The input end of the external power supply device 200 receives the mains supply, the output end is connected with the charging interface 106 of the intelligent terminal 100, and the mains supply is converted and then provided to the charging unit 101 through the charging interface 106.

The embodiment of the application further provides a storage medium, on which a charging control program is stored, and when the charging control program is executed by the processor, the steps of the charging control method in any one of the above embodiments are implemented.

The embodiments of the intelligent terminal and the storage medium provided in the present application may include all technical features of any one of the embodiments of the charging control method, and the expansion and explanation contents of the description are substantially the same as those of each embodiment of the method, which are not repeated herein.

The present embodiments also provide a computer program product comprising computer program code which, when run on a computer, causes the computer to perform the method in the various possible implementations as above.

The embodiments also provide a chip including a memory for storing a computer program and a processor for calling and running the computer program from the memory, so that a device on which the chip is mounted performs the method in the above possible embodiments.

It can be understood that the above scenario is merely an example, and does not constitute a limitation on the application scenario of the technical solution provided in the embodiments of the present application, and the technical solution of the present application may also be applied to other scenarios. For example, as one of ordinary skill in the art can know, with the evolution of the system architecture and the appearance of new service scenarios, the technical solutions provided in the embodiments of the present application are equally applicable to similar technical problems.

The foregoing embodiment numbers of the present application are merely for describing, and do not represent advantages or disadvantages of the embodiments.

The steps in the method of the embodiment of the application can be sequentially adjusted, combined and deleted according to actual needs.

The units in the device of the embodiment of the application can be combined, divided and pruned according to actual needs.

In this application, the same or similar term concept, technical solution, and/or application scenario description will generally be described in detail only when first appearing, and when repeated later, for brevity, will not generally be repeated, and when understanding the content of the technical solution of the present application, etc., reference may be made to the previous related detailed description thereof for the same or similar term concept, technical solution, and/or application scenario description, etc., which are not described in detail later.

In this application, the descriptions of the embodiments are focused on, and the details or descriptions of one embodiment may be found in the related descriptions of other embodiments.

The technical features of the technical solutions of the present application may be arbitrarily combined, and for brevity of description, all possible combinations of the technical features in the above embodiments are not described, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the present application.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) as above, including several instructions for causing a terminal device (which may be a mobile phone, a computer, a server, a controlled terminal, or a network device, etc.) to perform the method of each embodiment of the present application.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions in accordance with embodiments of the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable modules. The computer instructions may be stored in a storage medium or transmitted from one storage medium to another storage medium, for example, from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line), or wireless (e.g., infrared, wireless, microwave, etc.) means. The storage media may be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that contains an integration of one or more available media. Usable media may be magnetic media (e.g., floppy disks, storage disks, magnetic tape), optical media (e.g., DVD), or semiconductor media (e.g., solid State Disk (SSD)), among others.

The foregoing description is only of the preferred embodiments of the present application, and is not intended to limit the scope of the claims, and all equivalent structures or equivalent processes using the descriptions and drawings of the present application, or direct or indirect application in other related technical fields are included in the scope of the claims of the present application.

Claims

1. The charging control module is characterized by comprising a charging unit, at least two batteries, at least two switching tubes and a control unit;

the charging unit is connected with the positive electrode of the battery, the negative electrode of the battery is respectively connected with the first end of the switching tube, the second end of the switching tube is connected with each other and grounded, and the control unit is connected with the control end of the switching tube;

during the charging of the battery by the charging unit and/or during the discharging of the battery, the control unit controls the voltage difference between the two batteries through the switching tube.

2. The module according to claim 1, wherein the control unit controls switching tubes connected to a battery having a larger voltage among the two batteries to be turned off to control the voltage difference to be smaller than a first threshold value if the voltage difference between the two batteries is greater than or equal to the first threshold value during the battery charging; and/or the number of the groups of groups,

And in the discharging process of the batteries, if the voltage difference between the two batteries is larger than or equal to the second threshold value, the control unit controls a switching tube connected with the battery with smaller voltage in the two batteries to be disconnected so as to control the voltage difference to be smaller than the second threshold value.

3. The module according to claim 2, further comprising at least one current limiting module connected between the cathodes of two of the batteries, the control unit being connected to a control terminal of the current limiting module;

in the battery charging process, if the voltage difference between the two batteries is greater than or equal to the first threshold value, the control unit controls the current limiting module between the two batteries to work, and the cathodes of the two batteries are communicated, so that the battery with larger voltage in the two batteries charges the battery with smaller voltage; and/or the number of the groups of groups,

in the discharging process of the batteries, if the voltage difference between the two batteries is greater than or equal to the second threshold value, the control unit controls the current limiting module between the two batteries to work, and the cathodes of the two batteries are communicated, so that the battery with larger voltage in the two batteries charges the battery with smaller voltage.

4. The module according to claim 2, further comprising a sampling unit connected to the battery and the control unit for collecting the voltage of the battery and transmitting the voltage to the control unit;

the sampling unit is used for collecting the voltages of two batteries when a switching tube connected with the battery with larger voltage in the two batteries is disconnected; and/or the number of the groups of groups,

the sampling unit is used for collecting the voltages of the two batteries when a switching tube connected with the battery with smaller voltage in the two batteries is disconnected.

5. The module according to any one of claims 1 to 4, wherein the control unit is further configured to control, when a voltage difference between the two batteries is smaller than the first threshold value and/or the second threshold value, a switching tube to which the two batteries are connected to be turned on, so that the charging unit charges the two batteries until the batteries reach a full state.

6. A charging control method, characterized by comprising the steps of:

step S10, when the batteries are charged, if the voltage difference between the two batteries is larger than or equal to a first threshold value, a switching tube connected with the batteries with larger voltage is disconnected; and/or the number of the groups of groups,

And S40, when the batteries are discharged, if the voltage difference between the two batteries is larger than or equal to a second threshold value, switching off a switching tube connected with the battery with smaller voltage.

7. The method of claim 6, wherein the method further comprises:

and step S20, if the voltage difference between the two batteries is greater than or equal to a first threshold value and/or a second threshold value, connecting the cathodes of the two batteries so as to charge the battery with the larger voltage in the two batteries to charge the battery with the smaller voltage, and controlling the voltage difference between the two batteries to be smaller than the first threshold value and/or the second threshold value.

8. The method according to claim 6 or 7, characterized in that the method further comprises:

and step S30, when the voltage difference of the two batteries is smaller than the first threshold value and/or the second threshold value, controlling the switching tubes connected with the two batteries to be conducted so as to charge the two batteries by the charging unit until the batteries reach a full-charge state.

9. An intelligent terminal, characterized by comprising a charging control module according to any one of claims 1 to 5; and/or, comprising: a memory, a processor, wherein the memory has stored thereon a charge control program which, when executed by the processor, implements the steps of the charge control method according to any one of claims 6 to 8.

10. A charging system comprising the intelligent terminal of claim 9 and an external power supply device for powering the intelligent terminal.