CN112421702A - Lithium battery charging method and device - Google Patents
Lithium battery charging method and device Download PDFInfo
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- 238000007600 charging Methods 0.000 title claims abstract description 194
- 238000000034 method Methods 0.000 title claims abstract description 46
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 41
- 239000000446 fuel Substances 0.000 claims description 7
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 abstract description 13
- 229910001416 lithium ion Inorganic materials 0.000 abstract description 13
- 230000008569 process Effects 0.000 abstract description 8
- 238000007726 management method Methods 0.000 description 16
- 238000004891 communication Methods 0.000 description 10
- 238000012545 processing Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 6
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- 230000005236 sound signal Effects 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
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- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010280 constant potential charging Methods 0.000 description 1
- 238000010277 constant-current charging Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
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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 lithium battery charging method and apparatus, the lithium battery charging method includes: acquiring internal resistance of the battery and acquiring temperature of the battery; dynamically adjusting the charging current according to the internal resistance and the temperature of the battery, wherein the dynamically adjusting the charging current according to the internal resistance and the temperature of the battery comprises: when the battery temperature is greater than or equal to a preset critical temperature, reducing the charging current to a preset charging current; and when the battery temperature is lower than the preset critical temperature, adjusting the charging current according to the internal resistance of the battery. The method dynamically adjusts the charging current according to the internal resistance of the lithium ion battery, thereby effectively controlling the heat generated by the battery in the charging process and accelerating the charging speed.
Description
Technical Field
The present disclosure relates to the field of lithium ion batteries, and in particular, to a method and an apparatus for charging a lithium battery.
Background
With the development of the lithium ion battery industry, the requirements of a user on endurance and quick charging of the lithium ion battery are higher and higher, but as the current is larger, the joule heat generated inside the battery cell of the lithium ion battery is more, so that the problem of heat generation inside the battery is an important difficulty in limiting the quick charging, and the use safety of the battery is also influenced.
In the related technology, a multi-step constant current charging method is adopted to charge the lithium ion battery, and the method charges the battery at a constant current stage by stage according to the battery capacity, so that the charging speed is seriously reduced, and the requirement of a user on the charging speed is difficult to meet.
Disclosure of Invention
To overcome the problems in the related art, the present disclosure provides a method and an apparatus for charging a lithium battery.
According to a first aspect of the embodiments of the present disclosure, there is provided a lithium battery charging method, which is applied to a terminal, and includes: acquiring internal resistance of the battery and acquiring temperature of the battery; dynamically adjusting the charging current according to the internal resistance and the temperature of the battery, wherein the dynamically adjusting the charging current according to the internal resistance and the temperature of the battery comprises: when the battery temperature is greater than or equal to a preset critical temperature, reducing the charging current to a preset charging current; and when the battery temperature is lower than the preset critical temperature, adjusting the charging current according to the internal resistance of the battery.
Optionally, the acquiring the battery temperature includes: acquiring the battery temperature by a battery protection plate element, the battery protection plate element being a negative temperature coefficient thermistor, and the acquiring the battery internal resistance includes: and acquiring the internal resistance of the battery through a battery fuel gauge.
Optionally, the preset critical temperature is equal to a maximum withstand temperature of the battery minus 5 ℃, and the preset charging current is equal to half of a maximum charging current supported by the battery.
Optionally, when the battery temperature is lower than the preset critical temperature, adjusting the charging current according to the battery internal resistance includes: and determining the minimum internal resistance of the obtained internal resistances of the batteries, adjusting the charging current to the maximum charging current to charge the batteries when the obtained current internal resistance of the batteries is less than or equal to the minimum internal resistance of the batteries, and adjusting the charging current to be less than the maximum charging current to charge the batteries when the current internal resistance of the batteries is greater than the minimum internal resistance of the batteries.
Optionally, when the current internal resistance of the battery is greater than the minimum internal resistance of the battery, adjusting the charging current to be less than the maximum charging current to charge the battery includes:
when DCRmin < DCRi ≦ DCRmin +20 milliohms, I is 0.8 × Imax;
when DCRmin +20 milliohm < DCRi ≦ DCRmin +40 milliohm, I is 0.6 Imax;
when DCRmin +40 mOhm < DCRi ≦ DCRmin +60 mOhm, I is 0.4 Imax;
when DCRi > DCRmin +60 mOhm, I is 0.2 Imax,
wherein DCRmin represents the minimum internal resistance of the battery, DCRi represents the current internal resistance of the battery, I represents the charging current, and Imax represents the maximum charging current.
According to a second aspect of the embodiments of the present disclosure, there is provided a lithium battery charging device. The device comprises: an acquisition unit configured to acquire an internal resistance of the battery and acquire a temperature of the battery; an adjusting unit configured to dynamically adjust a charging current according to the internal resistance and the temperature of the battery, wherein the dynamically adjusting the charging current according to the internal resistance and the temperature of the battery comprises: and when the temperature of the battery is greater than or equal to a preset critical temperature, reducing the charging current to a preset charging current, and when the temperature of the battery is less than the preset critical temperature, adjusting the charging current according to the internal resistance of the battery.
Optionally, the acquiring the battery temperature includes: acquiring the battery temperature by a battery protection plate element, the battery protection plate element being a negative temperature coefficient thermistor, and the acquiring the battery internal resistance includes: and acquiring the internal resistance of the battery through a battery fuel gauge.
Optionally, the preset critical temperature is equal to a maximum withstand temperature of the battery minus 5 ℃, and the preset charging current is equal to half of a maximum charging current supported by the battery.
Optionally, when the battery temperature is lower than the preset critical temperature, adjusting the charging current according to the battery internal resistance includes: and determining the minimum internal resistance of the obtained internal resistances of the batteries, adjusting the charging current to the maximum charging current to charge the batteries when the obtained current internal resistance of the batteries is less than or equal to the minimum internal resistance of the batteries, and adjusting the charging current to be less than the maximum charging current to charge the batteries when the current internal resistance of the batteries is greater than the minimum internal resistance of the batteries.
Optionally, when the current internal resistance of the battery is greater than the minimum internal resistance of the battery, adjusting the charging current to be less than the maximum charging current to charge the battery includes:
when DCRmin < DCRi ≦ DCRmin +20 milliohms, I is 0.8 × Imax;
when DCRmin +20 milliohm < DCRi ≦ DCRmin +40 milliohm, I is 0.6 Imax;
when DCRmin +40 mOhm < DCRi ≦ DCRmin +60 mOhm, I is 0.4 Imax;
when DCRi > DCRmin +60 mOhm, I is 0.2 Imax,
wherein DCRmin represents the minimum internal resistance of the battery, DCRi represents the current internal resistance of the battery, I represents the charging current, and Imax represents the maximum charging current.
According to a third aspect of the embodiments of the present disclosure, there is provided a lithium battery charging device including: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to perform the lithium battery charging method according to the first aspect or any one of the first aspects.
According to a fourth aspect of embodiments of the present disclosure, there is provided a non-transitory computer-readable storage medium, wherein instructions, when executed by a processor of a mobile terminal, enable the mobile terminal to perform the method for charging a lithium battery according to the first aspect or any one of the first aspects.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: the method dynamically adjusts the charging current according to the internal resistance of the lithium ion battery, thereby effectively controlling the heat generated by the battery in the charging process and accelerating the charging speed.
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 invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a flow chart illustrating a method of charging a lithium battery according to an exemplary embodiment.
Fig. 2 is a flow chart illustrating adjusting a charging current according to an internal resistance of a battery according to an exemplary embodiment.
Fig. 3 is a block diagram illustrating a lithium battery charging apparatus according to an exemplary embodiment.
Fig. 4 is a block diagram illustrating another lithium battery charging apparatus according to an example 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 embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
The present disclosure provides a lithium battery charging method. Referring to fig. 1, fig. 1 is a flow chart illustrating a method of charging a lithium battery according to an exemplary embodiment. As shown in fig. 1, the lithium battery charging method is used in a terminal and includes the following steps S101-S102. A terminal, which may also be referred to as User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), etc., is a device that provides voice and/or data connectivity to a user, and for example, the terminal may be a handheld device, a vehicle-mounted device, etc. with a wireless connection function. Currently, some examples of terminals are: a smart phone (mobile phone), a Pocket computer (PPC), a palm top computer, a Personal Digital Assistant (PDA), a notebook computer, a tablet computer, a wearable device, or a vehicle-mounted device, etc. The terminal of the present disclosure is, for example, a mobile phone.
In step S101, the battery internal resistance is acquired and the battery temperature is acquired. According to the embodiment of the disclosure, the internal resistance and the temperature of the lithium ion battery in the mobile phone are obtained, and the information of the internal resistance and the temperature of the battery is transmitted to the power management chip in the mobile phone.
In step S102, dynamically adjusting a charging current according to the internal resistance and the temperature of the battery, where the dynamically adjusting the charging current according to the internal resistance and the temperature of the battery includes: when the battery temperature is greater than or equal to a preset critical temperature, reducing the charging current to a preset charging current; and when the battery temperature is lower than the preset critical temperature, adjusting the charging current according to the internal resistance of the battery. According to the embodiment of the disclosure, a power management chip in a mobile phone flexibly adjusts charging current for a lithium ion battery according to received information of internal resistance and temperature of the battery, and reduces the charging current to a preset charging current when the temperature of the battery received by the power management chip is greater than or equal to a preset critical temperature; and when the battery temperature received by the power management chip is lower than the preset critical temperature, adjusting the charging current according to the internal resistance of the battery received by the power management chip.
According to an embodiment of the present disclosure, the acquiring the battery temperature includes: the battery temperature is acquired by a battery protection plate member. In this embodiment, the mobile phone obtains the battery temperature through the battery protection board element, and transmits the obtained information of the battery temperature to the power management chip in the mobile phone. Further, the battery protection plate element is a negative temperature coefficient thermistor. Of course, the battery temperature may also be obtained by any other element suitable for measuring or reading the battery temperature.
According to an embodiment of the present disclosure, the obtaining of the internal resistance of the battery includes: and acquiring the internal resistance of the battery through a battery fuel gauge. In this embodiment, the mobile phone obtains the internal resistance of the battery through the battery fuel gauge, and transmits the obtained information of the internal resistance of the battery to the power management chip in the mobile phone. Of course, the internal resistance of the battery may also be obtained by any other element or method suitable for measuring or reading the internal resistance of the battery.
According to an embodiment of the present disclosure, the preset critical temperature is equal to a maximum withstand temperature of the battery minus 5 ℃, and the preset charging current is equal to half of a maximum charging current supported by the battery.
In this embodiment, when the battery temperature received by the power management chip is greater than or equal to the maximum withstanding temperature of the battery minus 5 ℃, the charging current is reduced to be equal to half of the maximum charging current supported by the battery, and when the battery temperature received by the power management chip is less than the maximum withstanding temperature of the battery minus 5 ℃, the charging current is adjusted according to the internal resistance of the battery received by the power management chip. For example, the maximum withstand temperature of a lithium ion battery of a mobile phone is generally 45 ℃ to 60 ℃, and 45 ℃ is taken as an example in the disclosure. In addition, for example, the maximum charging current supported by a lithium ion battery of a mobile phone is generally 1C to 5C (C represents a charging rate), and the present disclosure takes 3C as an example. According to the values of the maximum bearing temperature and the maximum supported charging current of the lithium ion battery of the mobile phone, the charging current can be reduced to be equal to or less than 1.5 ℃ when the battery temperature received by the power management chip is greater than or equal to 40 ℃, and in addition, when the battery temperature received by the power management chip is less than 40 ℃, the charging current is adjusted according to the internal resistance of the battery received by the power management chip.
Referring to fig. 2, fig. 2 is a flow chart illustrating adjusting a charging current according to an internal resistance of a battery according to an exemplary embodiment. As shown in fig. 2, when the battery temperature is less than the preset critical temperature, the adjusting the charging current according to the internal resistance of the battery includes: a step S1021 of determining a minimum battery internal resistance among the battery internal resistances that have been acquired; step S1022, in this step S1022, when the obtained current internal resistance of the battery is less than or equal to the minimum internal resistance of the battery, the charging current is adjusted to the maximum charging current to charge the battery, and when the current internal resistance of the battery is greater than the minimum internal resistance of the battery, the charging current is adjusted to be less than the maximum charging current to charge the battery.
In this embodiment, as described above, for example, the maximum withstand temperature is exemplified by 45 ℃ and the maximum charging current is exemplified by 3C. The method comprises the steps of firstly determining the minimum internal resistance of the acquired internal resistances of the batteries by a known method, for example, storing the internal resistance of the batteries into a register when a power management chip receives the internal resistance of the batteries, comparing the new internal resistance of the batteries with the internal resistance of the batteries in the register every time a new internal resistance of the batteries is received, if the new internal resistance of the batteries is small, replacing the internal resistance of the batteries in the register with the new internal resistance of the batteries and storing the new internal resistance of the batteries into the register, and if the new internal resistance of the batteries is large, keeping the originally stored internal resistance of the batteries in the register. And when the obtained current internal resistance of the battery is less than or equal to the minimum internal resistance of the battery, adjusting the charging current to be 3C to charge the battery, and when the current internal resistance of the battery is greater than the minimum internal resistance of the battery, adjusting the charging current to be less than 3C to charge the battery.
According to the internal resistance and the temperature of the battery, the charging current is dynamically adjusted, when the temperature of the battery is greater than or equal to the preset critical temperature, the charging current is reduced to the preset charging current, the temperature rise of the battery in the charging process is effectively reduced, and the serious influence on the charging speed caused by the fact that the charging temperature of the battery is too high and enters a small current buffer stage is prevented. In the charging process, when the temperature of the battery is lower than the preset critical temperature and the internal resistance of the battery is reduced along with the charging time, the charging is carried out by using larger charging current, and the charging speed can be improved. Meanwhile, the charging current is dynamically adjusted, the situation that the battery is charged in a high-temperature environment is prevented, and the cycle life of the high-rate rechargeable battery is prolonged.
According to an embodiment of the present disclosure, the adjusting the charging current to be smaller than the maximum charging current to charge the battery when the current internal battery resistance is larger than the minimum internal battery resistance includes:
when DCRmin < DCRi ≦ DCRmin +20 milliohms, I is 0.8 × Imax;
when DCRmin +20 milliohm < DCRi ≦ DCRmin +40 milliohm, I is 0.6 Imax;
when DCRmin +40 mOhm < DCRi ≦ DCRmin +60 mOhm, I is 0.4 Imax;
when DCRi is more than or equal to DCRmin +60 milliohms, I is 0.2 Imax,
wherein DCRmin represents the minimum internal resistance of the battery, DCRi represents the current internal resistance of the battery, I represents the charging current, and Imax represents the maximum charging current.
In this embodiment, as described above, for example, the maximum charging current (Imax) is 3C, and when DCRmin < DCRi ≦ DCRmin +20 milliohms, I ═ 2.4C; when DCRmin +20 milliohms < DCRi ≤ DCRmin +40 milliohms, I is 1.8C; when DCRmin +40 milliohm < DCRi ≦ DCRmin +60 milliohm, I is 1.2C; when DCRi is more than or equal to DCRmin +60 milliohms, I is 0.6C.
In the process of 0-100% of SOC of the lithium battery, the internal resistance of the lithium battery is a variable value, meanwhile, the aging internal resistance of the battery is increased along with the increase of the cycle times of the lithium battery, the charging current is controlled according to different internal resistance ranges, the control of charging temperature rise is facilitated, and the charging time and the charging temperature rise of the battery can be better equalized.
In addition, for example, the system operating voltage of the lithium ion battery of the mobile phone is generally 4.2V to 4.5V, and 4.4V is taken as an example in the present disclosure. In performing the method of the present disclosure, when the charging voltage reaches 4.4V, the constant voltage charging is performed until the charging current drops to a cutoff current of 0.02C.
The embodiment of the disclosure also provides a lithium battery charging device.
It is understood that, in order to implement the above functions, the lithium battery charging apparatus provided in the embodiments of the present disclosure includes a hardware structure and/or a software module for performing each function. The disclosed embodiments can be implemented in hardware or a combination of hardware and computer software, in combination with the exemplary elements and algorithm steps disclosed in the disclosed embodiments. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure.
The embodiment discloses a lithium battery charging device. The apparatus is adapted to perform the steps in the above-described method embodiments.
Referring to fig. 3, fig. 3 is a block diagram illustrating a lithium battery charging apparatus 100 according to an exemplary embodiment. As shown in fig. 3, the lithium battery charging apparatus 100 includes an acquisition unit 101 and an adjustment unit 102. The acquisition unit 101 is configured to acquire the battery internal resistance and acquire the battery temperature. The adjusting unit 102 is configured to dynamically adjust the charging current according to the internal resistance of the battery and the temperature of the battery. The dynamically adjusting the charging current according to the battery internal resistance and the battery temperature comprises: and when the temperature of the battery is greater than or equal to a preset critical temperature, reducing the charging current to a preset charging current, and when the temperature of the battery is less than the preset critical temperature, adjusting the charging current according to the internal resistance of the battery.
In another aspect, the obtaining the battery temperature includes: acquiring the battery temperature by a battery protection plate element, the battery protection plate element being a negative temperature coefficient thermistor, and the acquiring the battery internal resistance includes: and acquiring the internal resistance of the battery through a battery fuel gauge.
In yet another aspect, the preset critical temperature is equal to the maximum withstand temperature of the battery minus 5 ℃, and the preset charging current is equal to half of the maximum charging current supported by the battery.
In yet another aspect, the adjusting the charging current according to the internal resistance of the battery when the battery temperature is less than the preset threshold temperature includes:
and determining the minimum internal resistance of the obtained internal resistances of the batteries, adjusting the charging current to the maximum charging current to charge the batteries when the obtained current internal resistance of the batteries is less than or equal to the minimum internal resistance of the batteries, and adjusting the charging current to be less than the maximum charging current to charge the batteries when the current internal resistance of the batteries is greater than the minimum internal resistance of the batteries.
According to the internal resistance and the temperature of the battery, the charging current is dynamically adjusted, when the temperature of the battery is greater than or equal to the preset critical temperature, the charging current is reduced to the preset charging current, the temperature rise of the battery in the charging process is effectively reduced, and the serious influence on the charging speed caused by the fact that the charging temperature of the battery is too high and enters a small current buffer stage is prevented. In the charging process, when the temperature of the battery is lower than the preset critical temperature and the internal resistance of the battery is reduced along with the charging time, the charging is carried out by using larger charging current, and the charging speed can be improved. Meanwhile, the charging current is dynamically adjusted, the situation that the battery is charged in a high-temperature environment is prevented, and the cycle life of the high-rate rechargeable battery is prolonged.
In yet another aspect, the adjusting the charging current to be less than the maximum charging current to charge the battery when the present internal battery resistance is greater than the minimum internal battery resistance comprises:
when DCRmin < DCRi ≦ DCRmin +20 milliohms, I is 0.8 × Imax;
when DCRmin +20 milliohm < DCRi ≦ DCRmin +40 milliohm, I is 0.6 Imax;
when DCRmin +40 mOhm < DCRi ≦ DCRmin +60 mOhm, I is 0.4 Imax;
when DCRi is more than or equal to DCRmin +60 milliohms, I is 0.2 Imax,
wherein DCRmin represents the minimum internal resistance of the battery, DCRi represents the current internal resistance of the battery, I represents the charging current, and Imax represents the maximum charging current.
In the process of 0-100% of SOC of the lithium battery, the internal resistance of the lithium battery is a variable value, meanwhile, the aging internal resistance of the battery is increased along with the increase of the cycle times of the lithium battery, the charging current is controlled according to different internal resistance ranges, the control of charging temperature rise is facilitated, and the charging time and the charging temperature rise of the battery can be better equalized.
It will be appreciated that with respect to the apparatus in the above embodiments, the specific manner in which the respective units perform operations has been described in detail in relation to the embodiments of the method and will not be elaborated upon here.
An embodiment of the present disclosure also provides a lithium battery charging apparatus, and fig. 4 is a block diagram illustrating another lithium battery charging apparatus 400 according to an exemplary embodiment. For example, the apparatus 400 may be a mobile phone, a computer, a tablet device, a personal digital assistant, and the like.
Referring to fig. 4, the apparatus 400 may include one or more of the following components: processing component 402, memory 404, power component 406, multimedia component 408, audio component 410, input/output (I/O) interface 412, sensor component 414, and communication component 416.
The processing component 402 generally controls overall operation of the apparatus 400, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 402 may include one or more processors 420 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 402 can include one or more modules that facilitate interaction between the processing component 402 and other components. For example, the processing component 402 can include a multimedia module to facilitate interaction between the multimedia component 408 and the processing component 402.
The memory 404 is configured to store various types of data to support the operation of the apparatus 400. Examples of such data include instructions for any application or method operating on the device 400, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 404 may be implemented by any type or combination of volatile or non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.
The multimedia component 408 includes a screen that provides an output interface between the device 400 and the user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 408 includes a front facing camera and/or a rear facing camera. The front-facing camera and/or the rear-facing camera may receive external multimedia data when the device 400 is in an operational mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.
The audio component 410 is configured to output and/or input audio signals. For example, audio component 410 includes a Microphone (MIC) configured to receive external audio signals when apparatus 400 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in the memory 404 or transmitted via the communication component 416. In some embodiments, audio component 410 also includes a speaker for outputting audio signals.
The I/O interface 412 provides an interface between the processing component 402 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.
The sensor component 414 includes one or more sensors for providing various aspects of status assessment for the apparatus 400. For example, the sensor assembly 414 may detect an open/closed state of the apparatus 400, the relative positioning of components, such as a display and keypad of the apparatus 400, the sensor assembly 414 may also detect a change in position of the apparatus 400 or a component of the apparatus 400, the presence or absence of user contact with the apparatus 400, orientation or acceleration/deceleration of the apparatus 400, and a change in temperature of the apparatus 400. The sensor assembly 414 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 414 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 414 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
The communication component 416 is configured to facilitate wired or wireless communication between the apparatus 400 and other devices. The apparatus 400 may access a wireless network based on a communication standard, such as WiFi, 3G or 4G, or a combination thereof. In an exemplary embodiment, the communication component 416 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 416 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.
In an exemplary embodiment, the apparatus 400 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the above-described methods.
In an exemplary embodiment, a non-transitory computer-readable storage medium comprising instructions, such as the memory 404 comprising instructions, executable by the processor 420 of the apparatus 400 to perform the above-described method is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
The disclosed embodiments also provide a non-transitory computer-readable storage medium, where instructions in the storage medium, when executed by a processor of a mobile terminal, enable the mobile terminal to perform the lithium battery charging method according to the above embodiments.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the invention 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 invention is limited only by the appended claims.
Claims (12)
1. A lithium battery charging method is characterized in that the method is applied to a terminal, and the method comprises the following steps:
acquiring internal resistance of the battery and acquiring temperature of the battery;
dynamically adjusting the charging current according to the internal resistance and the temperature of the battery,
the dynamically adjusting the charging current according to the battery internal resistance and the battery temperature comprises:
when the battery temperature is greater than or equal to a preset critical temperature, reducing the charging current to a preset charging current;
and when the battery temperature is lower than the preset critical temperature, adjusting the charging current according to the internal resistance of the battery.
2. The method of claim 1, wherein the obtaining the battery temperature comprises: acquiring the battery temperature by a battery protection plate element, the battery protection plate element being a negative temperature coefficient thermistor, and the acquiring the battery internal resistance includes: and acquiring the internal resistance of the battery through a battery fuel gauge.
3. A method for charging a lithium battery as claimed in claim 1, characterized in that said preset critical temperature is equal to the maximum withstand temperature of said battery minus 5 ℃, and said preset charging current is equal to half the maximum charging current supported by said battery.
4. The method of any of claims 1-3, wherein the adjusting the charging current according to the internal resistance of the battery when the battery temperature is less than the preset critical temperature comprises:
determining the minimum battery internal resistance in the acquired battery internal resistances; and when the current internal resistance of the battery is greater than the minimum internal resistance of the battery, adjusting the charging current to be less than the maximum charging current to charge the battery.
5. The method of claim 4, wherein the adjusting the charging current to be less than the maximum charging current to charge the battery when the current internal battery resistance is greater than the minimum internal battery resistance comprises:
when DCRmin < DCRi ≦ DCRmin +20 milliohms, I is 0.8 × Imax;
when DCRmin +20 milliohm < DCRi ≦ DCRmin +40 milliohm, I is 0.6 Imax;
when DCRmin +40 mOhm < DCRi ≦ DCRmin +60 mOhm, I is 0.4 Imax;
when DCRi > DCRmin +60 mOhm, I is 0.2 Imax,
wherein DCRmin represents the minimum internal resistance of the battery, DCRi represents the current internal resistance of the battery, I represents the charging current, and Imax represents the maximum charging current.
6. A lithium battery charging device, characterized in that the device comprises:
an acquisition unit configured to acquire an internal resistance of the battery and acquire a temperature of the battery;
an adjustment unit configured to dynamically adjust a charging current according to the battery internal resistance and the battery temperature,
the dynamically adjusting the charging current according to the battery internal resistance and the battery temperature comprises:
and when the temperature of the battery is greater than or equal to a preset critical temperature, reducing the charging current to a preset charging current, and when the temperature of the battery is less than the preset critical temperature, adjusting the charging current according to the internal resistance of the battery.
7. The lithium battery charging apparatus as claimed in claim 6, wherein the obtaining of the battery temperature comprises: acquiring the battery temperature by a battery protection plate element, the battery protection plate element being a negative temperature coefficient thermistor, and the acquiring the battery internal resistance includes: and acquiring the internal resistance of the battery through a battery fuel gauge.
8. A lithium battery charging device as claimed in claim 6, characterized in that said preset critical temperature is equal to the maximum withstand temperature of said battery minus 5 ℃, said preset charging current being equal to half the maximum charging current supported by said battery.
9. The lithium battery charging apparatus according to any one of claims 6 to 8, wherein the adjusting the charging current according to the internal resistance of the battery when the battery temperature is less than the preset critical temperature comprises:
determining the minimum battery internal resistance in the acquired battery internal resistances; and when the current internal resistance of the battery is greater than the minimum internal resistance of the battery, adjusting the charging current to be less than the maximum charging current to charge the battery.
10. The lithium battery charging apparatus of claim 9, wherein the adjusting the charging current to be less than the maximum charging current to charge the battery when the present internal battery resistance is greater than the minimum internal battery resistance comprises:
when DCRmin < DCRi ≦ DCRmin +20 milliohms, I is 0.8 × Imax;
when DCRmin +20 milliohm < DCRi ≦ DCRmin +40 milliohm, I is 0.6 Imax;
when DCRmin +40 mOhm < DCRi ≦ DCRmin +60 mOhm, I is 0.4 Imax;
when DCRi > DCRmin +60 mOhm, I is 0.2 Imax,
wherein DCRmin represents the minimum internal resistance of the battery, DCRi represents the current internal resistance of the battery, I represents the charging current, and Imax represents the maximum charging current.
11. A lithium battery charging device, characterized in that the device comprises:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to: performing the lithium battery charging method of any one of claims 1 to 5.
12. A non-transitory computer-readable storage medium having instructions therein, which when executed by a processor of a mobile terminal, enable the mobile terminal to perform the lithium battery charging method of any one of claims 1 to 5.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113793998A (en) * | 2021-08-04 | 2021-12-14 | 岚图汽车科技有限公司 | Battery heat dissipation system and battery heat dissipation method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080122399A1 (en) * | 2006-11-29 | 2008-05-29 | Hajime Nishino | Charging system, charging device and battery pack |
| CN101299542A (en) * | 2008-03-05 | 2008-11-05 | 南京工业职业技术学院 | Control method for quickly charging battery |
| CN107104477A (en) * | 2017-03-27 | 2017-08-29 | 深圳市鑫彩翼科技有限公司 | A kind of battery charge intelligence control system and method |
| CN108886177A (en) * | 2016-03-31 | 2018-11-23 | 西门子移动有限公司 | Method and apparatus for charging to battery |
-
2019
- 2019-08-23 CN CN201910786040.6A patent/CN112421702B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080122399A1 (en) * | 2006-11-29 | 2008-05-29 | Hajime Nishino | Charging system, charging device and battery pack |
| CN101192757A (en) * | 2006-11-29 | 2008-06-04 | 松下电器产业株式会社 | Charging system, charging device and battery pack |
| CN101299542A (en) * | 2008-03-05 | 2008-11-05 | 南京工业职业技术学院 | Control method for quickly charging battery |
| CN108886177A (en) * | 2016-03-31 | 2018-11-23 | 西门子移动有限公司 | Method and apparatus for charging to battery |
| CN107104477A (en) * | 2017-03-27 | 2017-08-29 | 深圳市鑫彩翼科技有限公司 | A kind of battery charge intelligence control system and method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113793998A (en) * | 2021-08-04 | 2021-12-14 | 岚图汽车科技有限公司 | Battery heat dissipation system and battery heat dissipation method |
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