CN115765057A - Battery charging protection module, system and method and terminal equipment - Google Patents
Battery charging protection module, system and method and terminal equipment Download PDFInfo
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- CN115765057A CN115765057A CN202111021774.9A CN202111021774A CN115765057A CN 115765057 A CN115765057 A CN 115765057A CN 202111021774 A CN202111021774 A CN 202111021774A CN 115765057 A CN115765057 A CN 115765057A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The present disclosure relates to a battery charging protection module, a system, a method and a terminal device, wherein the battery charging protection module is used for performing charging protection on a battery of the terminal device, and includes: the terminal equipment comprises a switch unit used for connecting or disconnecting a charging path of the battery, a conversion unit electrically connected with the battery, a comparison unit electrically connected with the battery, the conversion unit and the switch unit respectively, and a control unit electrically connected with the comparison unit, the conversion unit and the switch unit respectively. According to the battery charging method and device, the comparison unit and the control unit which are directly powered by the battery of the terminal equipment are arranged, when the terminal equipment is in the shutdown state, the comparison unit and the control unit are still in the working state, so that overvoltage protection is carried out on the battery, the safety and reliability of battery charging of the terminal equipment in the shutdown state are improved, and the user experience is improved.
Description
Technical Field
The present disclosure relates to the field of electronic devices, and in particular, to a battery charging protection module, a battery charging protection system, a battery charging protection method, and a terminal device.
Background
In the field of electronic products, especially mobile devices, the quality of charging performance becomes an increasingly important index of the mobile devices, the charging speed is faster and faster, the battery capacity is larger and larger, and the charging time is shorter and shorter, so that the charging experience of users is better, but the potential risk is higher.
The charging circuit and the battery are involved in the charging process, and under some scenes, the problem of overvoltage exists in the battery charging process, so that the charging circuit needs to be optimized, and meanwhile, the battery needs to be protected optimally.
Disclosure of Invention
In order to overcome the problems in the related art, the present disclosure provides a battery charging protection module, a system, a method and a terminal device.
According to a first aspect of the embodiments of the present disclosure, a battery charging protection module is provided, which is disposed in a terminal device and used for performing charging protection on a battery of the terminal device, and the battery charging protection module includes:
a switching unit that disconnects a charging path of the battery when the switching unit is turned off;
a conversion unit electrically connected with the battery;
the comparison unit is electrically connected with the battery, the conversion unit and the switch unit respectively;
and the control unit is electrically connected with the comparison unit, the conversion unit and the switch unit respectively.
Optionally, the comparison unit comprises an amplifier and a comparator connected with each other, the amplifier is electrically connected with the battery, and the comparator is electrically connected with the control unit;
the conversion unit is electrically connected with the amplifier and the comparator respectively.
Optionally, the conversion unit comprises a rectifier or a DC-DC converter, the conversion unit being configured to supply power to the amplifier, the comparator and the control unit.
Optionally, the switching unit includes a MOS transistor.
In a second aspect of the embodiments of the present disclosure, a battery charging protection system is provided, where the battery charging protection system is disposed in a terminal device, and the battery charging protection system includes an integrated power management circuit electrically connected to a battery of the terminal device;
the battery charging protection system further comprises a battery charging protection module according to the first aspect.
Optionally, the battery charging protection module is integrated inside the integrated power management circuit; and/or the presence of a gas in the gas,
the battery charging protection module is arranged outside the integrated power management circuit.
Optionally, a charging path is provided between the integrated power management circuit and the battery, and a switch unit of the battery charging protection module is disposed on the charging path.
Optionally, the integrated power management circuit includes a charging management chip, and when the terminal device is in a shutdown state, an external charger supplies power to the charging management chip;
the charging management chip is in communication connection with an internal chip of the battery.
In a third aspect of the embodiments of the present disclosure, a terminal device is provided, where the battery charging protection system according to the second aspect is provided on the terminal device.
In a fourth aspect of the embodiments of the present disclosure, a battery charging protection method is provided, where the battery charging protection method is used for protecting a battery of a terminal device from being charged when the terminal device is in a shutdown charging state, and the battery charging protection method includes:
the comparison unit acquires charging information of a battery and determines the charging state of the battery according to the charging information;
when the charging state of the battery is in an overvoltage state, the comparison unit controls the switch unit to be disconnected, or the control unit electrically connected with the comparison unit controls the switch unit to be disconnected so as to disconnect the charging path of the battery.
Optionally, the battery charging protection method further includes:
a charging management chip of an integrated power management circuit acquires charging information of a battery and determines the charging state of the battery according to the charging information;
and when the charging state of the battery is in an overvoltage state, the integrated power supply management circuit closes a charging path between the integrated power supply management circuit and an external charger.
Optionally, the battery charging protection method further includes:
and when the charging state of the battery is in an overvoltage state, the integrated power management circuit disconnects a charging path of an internal chip of the battery.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: according to the battery charging method and device, the comparison unit and the control unit which are directly powered by the battery of the terminal equipment are arranged, when the terminal equipment is in the shutdown state, the comparison unit and the control unit are still in the working state, so that overvoltage protection is carried out on the battery, the safety and reliability of battery charging of the terminal equipment in the shutdown state are improved, and the user experience is improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a schematic diagram illustrating a structure of a battery charge protection module according to an exemplary embodiment.
Fig. 2 is a schematic diagram illustrating the structure of a battery charge protection system according to an exemplary embodiment.
Fig. 3 is a schematic diagram illustrating the structure of a battery charge protection system according to an exemplary embodiment.
Fig. 4 is a schematic diagram illustrating the structure of a battery charge protection system according to an exemplary embodiment.
Fig. 5 is a schematic diagram illustrating the structure of a battery charge protection system according to an exemplary embodiment.
Fig. 6 is a flow chart illustrating a battery charge protection method according to an exemplary embodiment.
Fig. 7 is a flowchart illustrating a battery charge protection method according to an exemplary embodiment.
Fig. 8 is a flowchart illustrating a battery charge protection method according to an exemplary embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the disclosure, as detailed in the appended claims.
In the field of electronic products, particularly mobile devices, the quality of charging performance becomes an increasingly important index of the mobile devices, the charging speed is increasingly fast, the battery capacity is increasingly large, and the charging time is increasingly short, so that the charging experience of users is better, but the potential risk is higher.
The charging circuit and the battery are involved in the charging process, and under some scenes, the problem of overvoltage exists in the battery charging process, so that the charging circuit needs to be optimized, and meanwhile, the battery needs to be protected optimally.
In the related art, for example, when the terminal device is in a shutdown state, no battery charging protection measures are involved in the shutdown state.
In order to solve the above problem, the present disclosure provides a battery charging protection module, which is arranged in a terminal device, and the battery charging protection module includes: the battery charging device comprises a switch unit for connecting or disconnecting a charging path of the battery, a conversion unit electrically connected with the battery, a comparison unit respectively electrically connected with the battery, the conversion unit and the switch unit, and a control unit respectively electrically connected with the comparison unit, the conversion unit and the switch unit. The battery charging protection module in this disclosure not only can carry out charging protection to the battery when terminal equipment is in the on state, can also provide protection in the charging process of battery when terminal equipment is in the off state. According to the battery charging method and device, the comparison unit and the control unit which are directly powered by the battery of the terminal equipment are arranged, when the terminal equipment is in the shutdown state, the comparison unit and the control unit are still in the working state, so that overvoltage protection is carried out on the battery, the safety and reliability of battery charging of the terminal equipment in the shutdown state are improved, and the user experience is improved.
According to an exemplary embodiment, as shown in fig. 1, a first aspect of the present embodiment provides a battery charging protection module 1, which is disposed in a terminal device, where the terminal device may include, for example, a smart phone, a notebook computer, a video camera, a smart watch, and the like. Taking fig. 1 as an example, the battery charging protection module 1 includes a switch unit 11, a conversion unit 12, a comparison unit 13 and a control unit 14. A switching unit 11 may be provided on the charging path of the battery 5, the switching unit 11 being configured to disconnect the charging path to protect the battery 5 based on the received disconnection instruction. It should be noted that the charging path in this embodiment does not mean a current path, and may be a device having a control function that can control the charging process to stop or control the charging path to be turned off during the charging process. When the switching unit 11 is provided on these devices having the control function, the switching unit 11 is turned off, and the devices having the control function control the battery 5 to stop charging.
The conversion unit 12 is electrically connected to the battery 5, the conversion unit 12 being arranged to convert the voltage of the battery 5 and to supply the comparison unit 13 and the control unit 14 electrically connected thereto. Electrically connected to the battery 5, the converting unit 12 and the switching unit 11, the comparing unit 13 is configured to detect charging information of the battery 5 in real time, wherein the charging information includes a voltage of the battery 5, and may further include a current, a power percentage, a battery temperature, and the like. According to batteries 5 of different models, a preset threshold value of corresponding charging information can be set for the comparison unit 13, and when the comparison unit 13 detects that the voltage of the battery 5 reaches or exceeds the preset threshold value, a protection signal can be sent out, and the switch unit 11 can be directly controlled to be switched off; or, the protection signal is transmitted to the control unit 14 electrically connected to the control unit 14, and after receiving the protection signal, the control unit 14 controls the switch unit 11 electrically connected to the control unit to be switched off, so as to disconnect the charging path and further protect the battery 5. The comparing unit 13 and the control unit 14 are both electrically connected to the battery 5, that is, when the terminal device is in a power-off state, both the comparing unit 13 and the control unit 14 can obtain electric energy from the battery 5, and keep charging information in a normal working state.
In one example, as shown in fig. 1, the switch unit 11 may be directly controlled by the comparison unit 13 electrically connected thereto, and the battery 5 is electrically connected to and supplies power to the comparison unit 13, so that the comparison unit 13 is still in an operating state when the terminal device is in a power-off state. When the voltage and/or the current detected by the comparing unit 13 exceed the preset threshold, the comparing unit 13 sends a protection signal to the switch unit 11 disposed on the charging path, and directly controls the switch unit 11 to turn off the charging path, so as to protect the battery 5, or when the electric quantity of the battery 5 reaches the preset threshold, for example, 80%,90%, and 100%, which is not limited to this, the comparing unit 13 also sends the protection signal to the switch unit 11, and controls the switch unit 11 to turn off the charging path, so as to protect the battery 5.
In another example, as shown in fig. 1, the switch unit 11 may also be controlled by a control unit 14 electrically connected thereto, the comparison unit 13 and the control unit 14 are both electrically connected to the battery 5 and in an energized state, and the comparison unit 13 detects that the charging information of the battery 5 exceeds a preset threshold, such as the voltage information or the current information exceeds a preset threshold. The comparison unit 13 sends a protection signal to the control unit 14, and the control unit 14 controls the switch unit 11 electrically connected thereto to switch to an off state to disconnect the charging path, thereby protecting the battery 5.
The two methods and circuit configurations for controlling the switch unit 11 to be turned off may be that the comparison unit 13 directly controls the switch unit 11 to be turned off, that the comparison unit 13 sends the protection signal to the control unit 14 and then the control unit 14 controls the switch unit 11 to be turned off, or that the two methods and circuit configurations coexist.
In an exemplary embodiment, as shown in fig. 1, the battery charging protection module 1 includes a switch unit 11, a conversion unit 12, a comparison unit 13 and a control unit 14, wherein the comparison unit 13 is electrically connected with the switch unit 11, the control unit 14 and the battery 5. Referring to fig. 1, the comparing unit 13 includes an amplifier 131 and a comparator 132 connected to each other, a power port of the amplifier 131 is electrically connected to the output terminal of the converting unit 12, a power port of the comparator 132 is electrically connected to the output terminal of the converting unit 12, and an input terminal of the converting unit 12 is electrically connected to the battery 5, so as to ensure that the amplifier 131 and the comparator 132 can obtain power supply from the battery 5 to be in a power-on operating state when the terminal device is in a power-off state. The amplifier 131 is configured to be electrically connected to the battery 5, an operational input terminal of the amplifier 131 is electrically connected to the battery 5, an operational output terminal of the amplifier 131 is electrically connected to an operational input terminal of the comparator 132 to collect and amplify charging information of the battery 5, and transmit the processed charging information to the comparator 132 connected thereto, the comparator 132 is configured to have an operational output terminal electrically connected to the control unit 14 and the switch unit 11, and compare the information transmitted from the amplifier 131 and transmit a signal to the control unit 14 or the switch unit 11, for example, a preset voltage threshold is stored in the comparator 132, when a voltage value transmitted from the amplifier 131 is equal to or higher than the preset voltage threshold, the comparator 132 acts to directly control the switch unit 11 electrically connected thereto to be disconnected, or transmit a signal to the control unit 14 electrically connected thereto, and the control unit 14 controls the switch unit electrically connected to the control unit 14 to disconnect a charging path of the battery 5, so that the battery 5 stops charging, thereby protecting the battery 5.
As shown in fig. 1, the conversion unit 12 is electrically connected to the amplifier 131, the comparator 132, and the control unit 14, and the conversion unit 12 converts the voltage of the battery 5 into a voltage suitable for the operation of the amplifier 131, the comparator 132, and the control unit 14 and supplies power thereto. The converting unit 12 includes a low dropout regulator (LDO) or a DC-DC (Direct Current-Direct Current) converter. The rectifier can utilize the energy storage principle of electric capacity and inductance to realize the electricity conversion, improves power supply stability. The DC-DC converter can realize voltage conversion by using the resistance change of the adjusting tube, and the power supply stability is improved. The rectifier and the DC-DC converter can convert and stabilize the voltage output from the battery 5, and both conversion of the output voltage of the battery 5 to the rated operating voltage of the amplifier 131 and the comparator 132 in the comparison unit 13 and the control unit 14 can be achieved. The rectifier has low cost, low noise and small quiescent current, and when the rectifier is applied to a battery charging protection circuit of terminal equipment, the input voltage and the output voltage are very close, the voltage drop is small, and the loss is extremely small, so that the battery 5 can work for a longer time. The DC-DC converter has the advantages of high efficiency and small quiescent current, and when applied to a charging protection circuit of a terminal device, the battery 5 can have a longer working time with extremely low power consumption.
In this embodiment, the switch unit 11 may be a Metal Oxide Semiconductor (MOS), and when the MOS is used as the switch unit, the MOS is in two states of on and off during operation, and the MOS is a voltage control element (the operation state is mainly determined by a gate voltage). Wherein, the MOS pipe can be N type MOS pipe, also can be P type MOS pipe, and the type according to the MOS pipe of selecting is different, and it can to change circuit structure. Charging information
The switch unit 11 may also be a transistor, which can be freely switched between a saturation region and a cut-off region, and can be used as a digital switch. It is understood that the switch unit 11 may be other electric elements having on/off circuit control function, such as a relay.
The present disclosure also provides a battery charging protection system, which is disposed in a terminal device, as shown in fig. 2 and fig. 3, the battery charging protection system includes an integrated power management circuit 6 electrically connected to a battery 5 of the terminal device, a charging path 7 is provided between the integrated power management circuit 6 and the battery 5, and the charging path 7 may include two segments. The integrated Power management circuit (PMIC) is used for managing Power devices in a host system, and is commonly used in mobile intelligent terminals such as mobile phones. The battery charging protection system further comprises the battery charging protection module 1, wherein the battery charging protection module 1 is electrically connected with the battery 5 of the terminal device and is in a power-on working state, even if the terminal device is in a power-off state, the charging information of the battery 5 can be collected in real time through the comparison unit 13 arranged in the terminal device, judgment is made, the control switch unit 11 is further controlled to disconnect a charging path, the battery 5 is stopped to be continuously charged, and the situations of overcharge, overvoltage and the like are avoided.
In an exemplary embodiment, as shown in fig. 2, the battery charging protection module 1 may be integrated inside the integrated power management circuit 6, and the battery charging protection module 1 is directly powered by the battery 5, that is, the battery charging protection module 1 is still in a power-on state when the terminal device is in a power-off state, and when a comparison unit 13 disposed in the battery charging protection module 1 detects that charging information of the battery 5 in a charging state reaches a preset threshold, the switch unit 11 is controlled to be turned off to disconnect a charging path, so as to protect the battery 5, where the charging information may include, for example, a battery voltage, a current, a power percentage, a temperature, and the like. When the battery charging protection module 1 is integrated inside the integrated power management circuit 6, the switch unit 11 may be a MOS transistor in the integrated power management circuit 6 for implementing a control function, and when the switch unit 11 is turned off, the integrated power management circuit 6 controls the charging process of the battery 5 to stop, or controls the charging path 7 to be turned off.
In another example, as shown in fig. 1 and 3, the battery charging protection module 1 may also be disposed outside the integrated power management circuit 6. As shown in fig. 5, the switch unit 11 is disposed on the charging path 7 between the integrated power management circuit 6 and the battery 5 of the terminal device, and the switch unit 11 may be disposed on any selected one of the charging paths 7, or the switch unit 11 may be disposed on each charging path 7. The battery charging protection module 1 may be in communication connection with the integrated power management circuit 6, may also be in communication connection with an application processor (not shown), and may also be in communication connection with an internal electric core (not shown) of the battery 5, when the comparison unit 13 in the charging protection module detects that the charging information of the battery 5 reaches a preset threshold, the integrated power management circuit 6 may be in communication connection, or the application processor, or the internal electric core, and then indirectly control the switch unit 11 or the switch circuit inside the battery 5 to be disconnected, so as to disconnect the charging path, thereby protecting the battery 5 from being damaged. The battery charging protection module 1 is arranged outside the integrated power management circuit 6, so that the situation that the structure of the integrated power management circuit 6 is complex and the production process of the battery charging protection system is complicated due to the fact that the battery charging protection module 1 is integrated into the integrated power management circuit 6 can be avoided.
Here, it should be noted that the two implementation manners related to the two embodiments may be used alone, or may be used in combination to provide multiple battery charging protection manners, and when one of the two implementation manners fails, the other implementation manner may be used to protect the charging process of the battery, so as to improve the charging safety.
In other possible embodiments, as shown in fig. 4 and fig. 5, the battery charging protection system includes a charging management chip 61, and in a charging state, an external charger can supply power to the charging management chip 61 to enable it to be in a power-on starting state, where a mcu (Micro Control Unit) (not shown) is set inside the charging management chip 61, and a detection algorithm is programmed to the mcu, so that the charging management chip 61 can detect charging information of the battery 5, and when the charging management chip 61 detects that the charging information of the battery 5 reaches a preset threshold, the switching Unit 11 on the charging path 7 set between the integrated power management circuit 6 and the battery 5 may be controlled to be turned off to disconnect the charging path, thereby protecting the battery 5 from being damaged.
As shown in fig. 5, an internal chip (not shown) of the battery 5 of the terminal device is in communication connection 8 with the charging management chip 61, a switch circuit (not shown) is arranged inside the battery 5 and electrically connected with the internal chip (not shown) of the battery 5, when the charging management chip 61 detects that the charging information reaches a preset threshold value, a protection signal is sent to the internal chip of the battery 5, and the internal chip controls the switch circuit inside the battery 5 to be turned off to disconnect the charging path, so as to protect the battery 5 from being damaged.
The two setting modes can be used independently or in combination.
The present disclosure also provides a terminal device, which may be a smart phone, a notebook computer, a camera, a smart watch, etc. The terminal equipment comprises a terminal equipment body and the battery charging protection system, and the battery charging protection system is installed inside the terminal equipment body.
By adopting the battery charging protection system, a user has more choices when charging the terminal equipment, and the battery can still be protected when the terminal equipment is charged in a shutdown state by setting the charging protection module electrically connected with the battery of the terminal equipment, or the battery when the terminal equipment in the shutdown state is charged can also be protected by setting a software algorithm on a power management chip in the integrated power management circuit. Compared with a non-processing shutdown charging mode in the related art, and when the terminal equipment is detected to be in a shutdown state and a charging state, the terminal equipment is switched to the startup state for charging.
The present disclosure further provides a battery charging protection method, which uses the battery charging protection system shown in the above embodiment to protect the charging process of the battery when the terminal device is in a power-off state.
According to an exemplary embodiment, as shown in fig. 6, the method in this embodiment includes:
step S101: the comparison unit acquires charging information of the battery and determines a charging state of the battery according to the charging information.
In this embodiment, the charging information of the battery obtained by the comparing unit is not limited to the voltage of the battery, and may also include data such as current, percentage of charge, and temperature of the battery.
Step S102: and judging whether the charging state of the battery is in an overvoltage state or not. If yes, go to step S104; if not, step S103 is executed.
Step S103: the charging path remains connected and the battery is in a normal charging state.
Step S104: the charging path remains connected and the battery is in a normal charging state. The comparison unit controls the switch unit to be disconnected, or the control unit electrically connected with the comparison unit controls the switch unit to be disconnected. Then, step S105 is performed.
Step S105: the charging path is disconnected, and the battery is in a charging stop state.
In the method, the charging information of the battery is detected by arranging the battery charging protection module 1 (hardware), the battery charging protection module 1 is directly powered by the battery of the terminal equipment, wherein a comparison unit for acquiring the charging information of the battery is arranged in the battery charging protection module 1, the comparison unit can directly control a switch unit arranged on a charging path, and can also indirectly control the switch unit arranged on the charging path through a control unit electrically connected with the comparison unit, so that the charging path can be disconnected, and the battery of the terminal equipment in a shutdown state is protected.
According to an exemplary embodiment, as shown in fig. 7, the method in the present embodiment includes:
step S201: and the charging management chip of the integrated power management circuit acquires the charging information of the battery and determines the charging state of the battery according to the charging information.
In this embodiment, the charging information of the battery acquired by the charging management chip is not limited to the voltage of the battery, and may also include data such as current, percentage of charge, and temperature of the battery.
Step S202: and judging whether the charging turntable of the battery is in an overvoltage state or not. If yes, go to step S204; if not, go to step S203.
Step S203: the charging path remains connected and the battery is in a normal charging state.
Step S204: the integrated power management circuit controls the switch unit between the external charger and the battery to be disconnected. Then step S205 is performed.
Step S205: the charging path is disconnected, and the battery is in a charging stop state.
According to an exemplary embodiment, as shown in fig. 8, the method in this embodiment comprises:
step S301: and the charging management chip of the integrated power management circuit acquires the charging information of the battery and determines the charging state of the battery according to the charging information.
In this embodiment, the charging information of the battery acquired by the charging management chip is not limited to the voltage of the battery, and may also include data such as current, percentage of charge, and temperature of the battery.
Step S302: and judging whether the charging state of the battery is in an overvoltage state or not. If yes, go to step S304; if not, go to step S303.
Step S303: the charging path remains connected and the battery is in a normal state of charge.
Step S304: the integrated power management control electrically controls the switch circuit inside the battery to be switched off. Then, step S305 is performed.
Step S305: the charging path is disconnected, and the battery is in a charging stop state.
The three battery charging protection methods can be used independently, can be combined randomly in pairs, and can exist simultaneously to provide a plurality of battery charging protection methods.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the embodiments disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice in the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (12)
1. The utility model provides a battery charging protection module sets up in terminal equipment, its characterized in that for charge protection to terminal equipment's battery, battery charging protection module includes:
a switching unit that disconnects a charging path of the battery when the switching unit is turned off;
a conversion unit electrically connected to the battery;
the comparison unit is electrically connected with the battery, the conversion unit and the switch unit respectively;
and the control unit is electrically connected with the comparison unit, the conversion unit and the switch unit respectively.
2. The battery charging protection module of claim 1, wherein the comparison unit comprises an amplifier and a comparator connected with each other, the amplifier is electrically connected with the battery, and the comparator is electrically connected with the control unit;
the conversion unit is electrically connected with the amplifier and the comparator respectively.
3. The battery charge protection module of claim 2, wherein the conversion unit comprises a rectifier or a DC-DC converter, the conversion unit being configured to power the amplifier, the comparator and the control unit.
4. The battery charging protection module of claim 1, wherein the switching unit comprises a MOS transistor.
5. A battery charging protection system is arranged on a terminal device and is characterized by comprising an integrated power management circuit electrically connected with a battery of the terminal device;
the battery charging protection system further comprises a battery charging protection module according to any one of claims 1 to 4.
6. The battery charging protection system of claim 5, wherein the battery charging protection module is integrated inside the integrated power management circuit; and/or the presence of a gas in the gas,
the battery charging protection module is arranged outside the integrated power management circuit.
7. The battery charge protection system of claim 5, wherein a charging path is provided between the integrated power management circuit and the battery, and a switch unit of the battery charge protection module is disposed on the charging path.
8. The battery charging protection system of claim 5, wherein the integrated power management circuit comprises a charging management chip, and when the terminal device is in a shutdown state, an external charger supplies power to the charging management chip;
the charging management chip is in communication connection with the internal chip of the battery.
9. A terminal device, characterized in that the terminal device is provided with a battery charging protection system according to any one of claims 5 to 8.
10. A battery charging protection method is used for charging protection of a battery of a terminal device when the terminal device is in a shutdown charging state, and is characterized by comprising the following steps:
the comparison unit acquires charging information of a battery and determines the charging state of the battery according to the charging information;
when the charging state of the battery is in an overvoltage state, the comparison unit controls the switch unit to be disconnected, or the control unit electrically connected with the comparison unit controls the switch unit to be disconnected so as to disconnect the charging path of the battery.
11. The battery charge protection method of claim 10, further comprising:
a charging management chip of the integrated power management circuit acquires charging information of a battery and determines the charging state of the battery according to the charging information;
and when the charging state of the battery is in an overvoltage state, the integrated power supply management circuit closes a charging path between the integrated power supply management circuit and an external charger.
12. The battery charge protection method of claim 11, further comprising:
and when the charging state of the battery is in an overvoltage state, the integrated power management circuit disconnects a charging path of an internal chip of the battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111021774.9A CN115765057A (en) | 2021-09-01 | 2021-09-01 | Battery charging protection module, system and method and terminal equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111021774.9A CN115765057A (en) | 2021-09-01 | 2021-09-01 | Battery charging protection module, system and method and terminal equipment |
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| Publication Number | Publication Date |
|---|---|
| CN115765057A true CN115765057A (en) | 2023-03-07 |
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|---|---|---|---|
| CN202111021774.9A Pending CN115765057A (en) | 2021-09-01 | 2021-09-01 | Battery charging protection module, system and method and terminal equipment |
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| Country | Link |
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| CN (1) | CN115765057A (en) |
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2021
- 2021-09-01 CN CN202111021774.9A patent/CN115765057A/en active Pending
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