CN112564208A - Dynamic high-efficiency charging and discharging method between batteries - Google Patents
Dynamic high-efficiency charging and discharging method between batteries Download PDFInfo
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- CN112564208A CN112564208A CN202011330156.8A CN202011330156A CN112564208A CN 112564208 A CN112564208 A CN 112564208A CN 202011330156 A CN202011330156 A CN 202011330156A CN 112564208 A CN112564208 A CN 112564208A
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- voltage
- battery
- charged
- battery compartment
- output voltage
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
Abstract
The invention provides a method for dynamically and efficiently charging and discharging batteries, which comprises the following steps: the battery cabin power supply management chip sends a voltage carrier through an output power line to inquire the battery voltage of the charged equipment; the method comprises the steps that a charged device decodes a voltage carrier signal after receiving a voltage carrier, and then the current on a power line is adjusted to return a current carrier to a battery compartment power management chip, wherein the current carrier comprises information of the battery voltage of the charged device; the battery compartment power supply management chip receives a current carrier wave transmitted by the charged device by detecting the current, and reduces or increases the output voltage of the battery compartment power supply management chip according to the current carrier wave, so that the difference of the output voltage minus the battery voltage of the charged device is in a preset range.
Description
Technical Field
The invention relates to the field of batteries, in particular to a dynamic high-efficiency charging and discharging method between batteries.
Background
At present, a battery compartment is commonly used for charging a battery of a portable device on the market, a linear charging chip with 5V input is commonly used for the device, the charging efficiency is very low and ranges from 40% to 84%, the battery compartment is boosted to 5V, the efficiency is lost, the capacity of the battery compartment is limited, and the low-efficiency system greatly influences the endurance of the device.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method for dynamically and efficiently charging and discharging batteries aiming at the defects in the prior art.
According to the present invention, there is provided a method for dynamic high efficiency charging and discharging between batteries, comprising: the battery cabin power supply management chip sends a voltage carrier through an output power line to inquire the battery voltage of the charged equipment; the method comprises the steps that a charged device decodes a voltage carrier signal after receiving a voltage carrier, and then the current on a power line is adjusted to return a current carrier to a battery compartment power management chip, wherein the current carrier comprises information of the battery voltage of the charged device; the battery compartment power supply management chip receives a current carrier wave transmitted by the charged device by detecting the current, and reduces or increases the output voltage of the battery compartment power supply management chip according to the current carrier wave, so that the difference of the output voltage minus the battery voltage of the charged device is in a preset range.
Preferably, the method for dynamically and efficiently charging and discharging between batteries further comprises: the charged device actively sends current carrier to the battery bin power management chip through the current carrier according to the relation between the battery voltage and the charging voltage.
Preferably, the difference between the output voltage minus the battery voltage of the charged device is not less than the minimum voltage difference that maintains proper operation of the device and does not exceed a predetermined difference threshold.
Preferably, the current carrier wave represents a magnitude relationship between the input voltage of the charged device and the battery voltage of the charged device itself.
Preferably, the current carrier wave represents the magnitude of the battery voltage of the charged device itself.
Preferably, when the battery voltage of the charged device is lower than the battery output voltage of the battery compartment and the voltage difference between the battery voltage and the battery output voltage is less than the predetermined threshold value, the battery compartment power management chip enables the battery compartment to close the switch power mode and enter the through mode.
Preferably, the battery compartment power management chip raises the output voltage of the battery compartment when determining that the output voltage of the battery compartment is higher than the battery voltage of the charged device and lower than a preset voltage according to the current carrier transmitted by the charged device.
Preferably, the battery compartment power management chip reduces the output voltage of the battery compartment when determining that the output voltage of the battery compartment is higher than the battery voltage of the charged device by more than a preset voltage according to the current carrier transmitted by the charged device.
The invention keeps the charging voltage of the charged device and the battery voltage at a small voltage difference by dynamically adjusting the output voltage of the battery cabin power management chip instead of fixedly outputting 5V, thereby keeping the linear charging chip of the device in a high-efficiency interval all the time.
Drawings
A more complete understanding of the present invention, and the attendant advantages and features thereof, will be more readily understood by reference to the following detailed description when considered in conjunction with the accompanying drawings wherein:
fig. 1 schematically shows a principle view of a dynamic high-efficiency charge and discharge method between batteries according to a preferred embodiment of the present invention.
Fig. 2 schematically shows a schematic diagram of battery compartment initiated communication in a method of dynamic high efficiency charging and discharging between batteries according to a preferred embodiment of the present invention.
Fig. 3 is a schematic diagram schematically illustrating a charged device initiating communication in a dynamic high-efficiency charge and discharge method between batteries according to a preferred embodiment of the present invention.
Fig. 4 is a schematic diagram schematically illustrating a device power terminal sampling scheme in a dynamic high-efficiency charge and discharge method between batteries according to a preferred embodiment of the invention.
Fig. 5 is a schematic diagram illustrating a device ground sampling scheme in a dynamic high-efficiency charge and discharge method between batteries according to a preferred embodiment of the present invention.
Fig. 6 is a schematic diagram illustrating an output voltage when a battery voltage of a battery compartment is lower than a device battery voltage in a dynamic high efficiency charge and discharge method between batteries according to a preferred embodiment of the present invention.
Fig. 7 schematically shows a schematic diagram of the output voltage when the voltage of the battery compartment battery is significantly higher than the voltage of the device battery in a dynamic high-efficiency charge and discharge method between batteries according to a preferred embodiment of the present invention.
Fig. 8 is a schematic diagram illustrating an output voltage when a battery voltage of a battery compartment is slightly higher than a device battery voltage in a dynamic high-efficiency charge and discharge method between batteries according to a preferred embodiment of the present invention.
It is to be noted, however, that the appended drawings illustrate rather than limit the invention. It is noted that the drawings representing structures may not be drawn to scale. Also, in the drawings, the same or similar elements are denoted by the same or similar reference numerals.
Detailed Description
In order that the present disclosure may be more clearly and readily understood, reference will now be made in detail to the present disclosure as illustrated in the accompanying drawings.
The linear charging chip efficiency of the device is proportional to the value of the battery voltage divided by the input voltage. Maintaining the efficiency of the linear charging chip requires maintaining the input voltage and the battery voltage at a small voltage difference (too small a voltage difference may cause the device to malfunction, and the minimum voltage difference for maintaining the device to function properly is determined by the allowable operating range of the linear charging chip of the device to be charged).
Fig. 1 schematically shows a principle view of a dynamic high-efficiency charge and discharge method between batteries according to a preferred embodiment of the present invention. As shown in fig. 1, the battery compartment power management chip sends a voltage carrier through the output power line to inquire about the condition of the charged device (specifically, the battery voltage of the charged device); the charged device decodes the voltage carrier signal after receiving the voltage carrier, and then adjusts the current on the power line to return the current carrier to the battery compartment power management chip. Alternatively or additionally, the charged device actively sends the current carrier to the battery bin power management chip through the current carrier according to the relation between the battery voltage and the charging voltage of the device.
That is, the current carrier contains information of the magnitude of the battery voltage of the charged device. Specifically, for example, the current carrier wave represents a magnitude relationship between the battery compartment output voltage (i.e., the input voltage of the charged device) and the battery voltage of the charged device itself. Alternatively, the current carrier wave indicates the magnitude of the battery voltage of the charged device itself.
The battery compartment power management chip receives a current carrier transmitted by the charged device by detecting the current, and reduces or increases the output voltage of the battery compartment power management chip according to the current carrier, so that the difference between the output voltage and the battery voltage of the charged device is within a predetermined range, for example, the difference between the output voltage and the battery voltage of the charged device can be always maintained to keep the device working normally, but not too much, for example, the difference does not exceed a predetermined difference threshold.
Specifically, for example, the battery compartment power management chip raises the output voltage of the battery compartment when determining that the output voltage of the battery compartment is higher than the battery voltage of the device to be charged and lower than a preset voltage according to the current carrier transmitted by the device to be charged. For another example, the battery compartment power management chip reduces the output voltage of the battery compartment when determining that the output voltage of the battery compartment is higher than the battery voltage of the charged device by more than a preset voltage according to the current carrier transmitted by the charged device.
Further, when the battery voltage of the charged device is lower than the battery output voltage of the battery bin and the voltage difference between the battery voltage and the battery output voltage is small, the battery bin power management chip enables the battery bin to close the switch power mode and enter the direct-connection mode so as to directly output the battery output voltage to the charged device, and therefore efficiency is further improved.
< communication example >
Fig. 2 schematically shows a schematic diagram of battery compartment initiated communication in a method of dynamic high efficiency charging and discharging between batteries according to a preferred embodiment of the present invention. As shown in fig. 2, the battery compartment is queried by adjusting the output voltage to send a voltage carrier, the device decodes the voltage carrier, then compares the magnitude relationship between the input voltage and the battery voltage, and then returns a command for decreasing or increasing the voltage through a current signal, or directly returns the state of the battery voltage, and the battery compartment determines and adjusts the required output voltage after decoding the current carrier, so that the output voltage and the device battery voltage keep a voltage difference.
The first way of the method shown in fig. 2: the battery compartment (output voltage 5V at this moment) sends inquiry voltage carrier waves, the equipment (battery voltage is assumed to be 3.8V) returns to inform that the output voltage is reduced, the battery compartment reduces the first-gear output voltage to 4.9V, the output voltage is reduced from 5V to 4V (battery voltage +0.2V after multiple inquiries and adjustments, the minimum voltage difference allowed by the equipment is assumed to be 0.1V, and the charging voltage difference is designed to be 0.2V for ensuring high efficiency and adjusting output without touching the minimum voltage difference. After waiting for a period of time, when the voltage of the battery of the equipment is charged to 3.85V, the power generation flow carrier informs the battery cabin of increasing the voltage, and the battery cabin increases the output voltage by one gear until the voltage of the battery is 4.05V (the voltage of the battery is plus 0.2V).
Second mode of the method shown in fig. 2: the battery compartment (output voltage 5V at this moment) sends query voltage carrier, the device (assuming that the battery voltage is 3.8V) returns to inform that the battery voltage is 3.8V, and the battery compartment directly reduces the output voltage from 5V to 4V (battery voltage +0.2V) after decoding. After waiting for a period of time, when the device battery voltage is charged up to 3.85V, the battery compartment looks up the new battery voltage and increases the output voltage to 4.05V (battery voltage + 0.2V).
Fig. 3 is a schematic diagram schematically illustrating a charged device initiating communication in a dynamic high-efficiency charge and discharge method between batteries according to a preferred embodiment of the present invention. As shown in fig. 3, for example, the battery compartment does not actively send a voltage carrier query, the device detects that the input voltage is higher or lower than the device battery by a minimum voltage difference, and after the input, the device returns a command to decrease or increase the voltage through the current signal, or directly returns the state of the battery voltage, and after the battery compartment decodes the current carrier, the battery compartment determines and adjusts the required output voltage, so that the output voltage and the device battery voltage maintain a voltage difference.
The first way of the method shown in fig. 3: the device (assuming that the battery voltage is 3.8V) detects that the input voltage (5V) is too high, informs the battery compartment that the output voltage needs to be reduced through the current carrier, the battery compartment reduces the first-gear output voltage to 4.9V, and the device detects that the current carrier is too high and then requires to reduce the voltage, and the input voltage of the device is reduced to 4V (the battery voltage +0.2V) after being adjusted for several times. After waiting for a period of time, the device battery voltage is charged up to 3.85V, and the power generation flow carrier informs the battery compartment to increase the output voltage by one gear to 4.05V (battery voltage + 0.2V).
Second mode of the method shown in fig. 3: the device (assuming a battery voltage of 3.8V) communicates back that the battery voltage is 3.8V, and the battery bin decodes to directly reduce the output voltage from 5V to 4V (battery voltage + 0.2V). After waiting for a period of time, at this time the battery voltage of the device is charged up to 3.85V, the device detects that the input voltage is too low and informs the battery compartment of the battery voltage through the current carrier again, and the battery compartment adjusts the output voltage up to 4.05V according to the battery voltage +0.2V calculation.
< architecture example >
Fig. 4 is a schematic diagram schematically illustrating a device power terminal sampling scheme in a dynamic high-efficiency charge and discharge method between batteries according to a preferred embodiment of the present invention, and fig. 5 is a schematic diagram schematically illustrating a device ground terminal sampling scheme in a dynamic high-efficiency charge and discharge method between batteries according to a preferred embodiment of the present invention. In fig. 4, the device adjusts the current change to send a current carrier, and the battery compartment obtains the current carrier code by sampling the current change at the power supply terminal, and then adjusts the output voltage after decoding. In fig. 5, the device adjusts the current change to send a current carrier, and the battery compartment obtains a current carrier code by sampling the current change at the ground terminal, and then adjusts the output voltage after decoding.
< output Voltage adjustment example >
Fig. 6 is a schematic diagram illustrating an output voltage when a battery voltage of a battery compartment is lower than a device battery voltage in a dynamic high efficiency charge and discharge method between batteries according to a preferred embodiment of the present invention. Where the battery voltage of the battery compartment is lower than the device battery voltage (i.e., the voltage received by the charging device receiving terminal VIN), the battery compartment enters the boost DCDC mode. The output voltage is boosted to the device battery voltage plus a voltage difference by the switching of the first transistor Q1 and the second transistor Q2.
Fig. 7 schematically shows a schematic diagram of the output voltage when the voltage of the battery compartment battery is significantly higher than the voltage of the device battery in a dynamic high-efficiency charge and discharge method between batteries according to a preferred embodiment of the present invention. When the battery voltage of the battery cabin is obviously higher than the battery voltage of the equipment, the battery cabin enters a voltage reduction DCDC mode. The output voltage is reduced to the device battery voltage plus a voltage difference by the switching of the third transistor Q3 and the fourth transistor Q4.
< pass-through mode example >
Fig. 8 is a schematic diagram illustrating an output voltage when a battery voltage of a battery compartment is slightly higher than a device battery voltage in a dynamic high-efficiency charge and discharge method between batteries according to a preferred embodiment of the present invention. The efficiency loss in the DCDC mode itself is not the best efficiency mode if the battery compartment continues to use the step-down DCDC mode when the battery compartment cell voltage is slightly higher than the device cell voltage. At this time, the efficiency loss of the battery compartment does not exist by adopting the direct mode, and the battery voltage is directly output to the output voltage.
In the invention, the batteries are communicated with each other through a voltage carrier and a current carrier, and the charging efficiency of the charged equipment is improved by adjusting the output voltage of the battery bin; and through increasing the through mode, improve the conversion efficiency of battery compartment output voltage. After adopting this scheme, the current fixed 5V voltage charging scheme of contrast has greatly promoted charge efficiency, is showing the duration that has promoted battery compartment and equipment battery.
It should be noted that the terms "first", "second", "third", and the like in the description are used for distinguishing various components, elements, steps, and the like in the description, and are not used for indicating a logical relationship or a sequential relationship between the various components, elements, steps, and the like, unless otherwise specified.
It is to be understood that while the present invention has been described in conjunction with the preferred embodiments thereof, it is not intended to limit the invention to those embodiments. It will be apparent to those skilled in the art from this disclosure that many changes and modifications can be made, or equivalents modified, in the embodiments of the invention without departing from the scope of the invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.
Claims (8)
1. A method for dynamically and efficiently charging and discharging batteries is characterized by comprising the following steps: the battery cabin power supply management chip sends a voltage carrier through an output power line to inquire the battery voltage of the charged equipment; the method comprises the steps that a charged device decodes a voltage carrier signal after receiving a voltage carrier, and then the current on a power line is adjusted to return a current carrier to a battery compartment power management chip, wherein the current carrier comprises information of the battery voltage of the charged device; the battery compartment power supply management chip receives a current carrier wave transmitted by the charged device by detecting the current, and reduces or increases the output voltage of the battery compartment power supply management chip according to the current carrier wave, so that the difference of the output voltage minus the battery voltage of the charged device is in a preset range.
2. The method of claim 1 for dynamic high efficiency charging and discharging between batteries, further comprising: the charged device actively sends current carrier to the battery bin power management chip through the current carrier according to the relation between the battery voltage and the charging voltage.
3. The method according to claim 1 or 2, wherein the difference between the output voltage minus the battery voltage of the charged device is not less than the minimum voltage difference for keeping the device operating normally and does not exceed a predetermined difference threshold.
4. The method according to claim 1 or 2, wherein the current carrier wave represents a magnitude relationship between an input voltage of the charged device and a battery voltage of the charged device itself.
5. The method according to claim 1 or 2, wherein the current carrier represents the magnitude of the battery voltage of the charged device.
6. The method according to claim 1 or 2, wherein when the battery voltage of the charged device is lower than the battery output voltage of the battery compartment and the voltage difference between the battery output voltage and the battery output voltage is less than a predetermined threshold, the battery compartment power management chip causes the battery compartment to turn off the switching power mode and enter the pass-through mode.
7. The method according to claim 1 or 2, wherein the battery compartment power management chip increases the output voltage of the battery compartment when determining that the output voltage of the battery compartment is higher than the battery voltage of the device to be charged and lower than a predetermined voltage according to the current carrier transmitted from the device to be charged.
8. The method according to claim 1 or 2, wherein the battery compartment power management chip reduces the output voltage of the battery compartment when determining that the output voltage of the battery compartment is higher than the battery voltage of the device to be charged by more than a predetermined voltage according to the current carrier transmitted from the device to be charged.
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| CN202011330156.8A CN112564208A (en) | 2020-11-24 | 2020-11-24 | Dynamic high-efficiency charging and discharging method between batteries |
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| CN202011330156.8A CN112564208A (en) | 2020-11-24 | 2020-11-24 | Dynamic high-efficiency charging and discharging method between batteries |
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| CN107732343A (en) * | 2017-09-12 | 2018-02-23 | 海日升电器制品(深圳)有限公司 | Charging method and charger |
| CN210201532U (en) * | 2019-08-29 | 2020-03-27 | 上海来远电子科技有限公司 | Bluetooth headset developments charging device |
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2020
- 2020-11-24 CN CN202011330156.8A patent/CN112564208A/en active Pending
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| US6320354B1 (en) * | 2000-07-21 | 2001-11-20 | Motorola, Inc. | Method and apparatus for battery charging |
| CN105471033A (en) * | 2015-12-21 | 2016-04-06 | 南京信息职业技术学院 | Intelligent charging method and intelligent charging system based on charging curve |
| CN107732343A (en) * | 2017-09-12 | 2018-02-23 | 海日升电器制品(深圳)有限公司 | Charging method and charger |
| CN210201532U (en) * | 2019-08-29 | 2020-03-27 | 上海来远电子科技有限公司 | Bluetooth headset developments charging device |
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Application publication date: 20210326 |
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