CN205595827U - Sections two, balanced control integrated circuit that fill of lithium A series of cells - Google Patents
Sections two, balanced control integrated circuit that fill of lithium A series of cells Download PDFInfo
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- CN205595827U CN205595827U CN201620215644.7U CN201620215644U CN205595827U CN 205595827 U CN205595827 U CN 205595827U CN 201620215644 U CN201620215644 U CN 201620215644U CN 205595827 U CN205595827 U CN 205595827U
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 48
- 230000000694 effects Effects 0.000 abstract description 3
- 230000010355 oscillation Effects 0.000 abstract 6
- 238000001514 detection method Methods 0.000 abstract 3
- 230000005611 electricity Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 230000008901 benefit Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model provides a sections two, balanced control integrated circuit that fill of lithium A series of cells, belongs to the integrated circuit field, to the poor problem of the complicated relatively and balanced effect of current charge management circuit, the utility model discloses take following technical scheme: power on reset circuit and oscillation circuit link to each other, and oscillation circuit links to each other with ADC and logical operation control circuit, and ADC and logical operation control circuit predetermine detection circuitry, voltage with the electric current respectively and predetermine detection circuitry, battery voltage oscillation circuit 0, power detection circuitry, PWM oscillation circuit 2, LED and instruct oscillation circuit 2 to link to each other, and PWM oscillation circuit 2 links to each other with built -in MOS circuit, based on above circuit structure, realized supporting simultaneously to charge among two sections lithium A series of cells's the charge management blanking voltage and big electricity charging electric current adjustable function, and the lithium cell of compatible all different capacity, different grade type almost.
Description
Technical field
This utility model relates to a kind of integrated circuit, particularly relates to a kind of two joint lithium battery series connection balances and fills control integrated circuit.
Background technology
Flourish along with toy market, the flying power of toy battery is required more and more higher by people, the appearance of two joint lithium battery series-fed schemes, well solves this problem.But the Charge Management after two joint lithium battery series connection is more relative complex.The Charge Management of mesh first-half lithium battery series connection, great majority or the complicated discrete device scheme of outside MOS+ number the commutation diode of one MCU+ number of use.Additionally must also be equipped with a civil power for this scheme and turn the DC source of 8.4V-12V.The DC source price of this scheme only 8.4V-12V is the most high, and additionally this scheme also needs to the components and parts such as the MCU of a built-in ADC, more than two NMOS, more than two PMOS, more than two commutation diodes.This scheme does not have the charge cutoff voltage adjustable function of lithium battery simultaneously, does not the most have lithium battery large current charge current adjustment function, with less charge cutoff voltage and the most adjustable function of large current charge electric current.The counterbalance effect of this scheme is poor simultaneously, causes two joint lithium batteries voltage difference after charging terminates may be up to more than 60mV.
Utility model content
Technical problem to be solved in the utility model is: for the problem that Charge Management is relative complex and counterbalance effect is poor after two joint lithium battery series connection in the prior art mentioned in background technology, this utility model provides a kind of novel two joint lithium battery series connection balances to fill control integrated circuit, not only compatible different capabilities, different types of lithium battery, is simultaneously achieved two joint lithium batteries voltage difference after charging terminates in the Charge Management of two joint lithium battery series connection and controls within 30mV.
Technical solution adopted in the utility model is:
A kind of two joint lithium batteries series connection balances fill control integrated circuit, and including electrification reset circuit (POR), oscillating circuit (OSC), internal reference circuit, ADC and logical operations control circuit, electric current presets testing circuit, voltage presets testing circuit, cell voltage feedback circuit, power sense circuit, PWM drive circuit, built-in MOS circuit, LED indicate drive circuit；Electrification reset circuit is connected with oscillating circuit, oscillating circuit is connected with ADC and logical operations control circuit, ADC and logical operations control circuit preset testing circuit with electric current respectively, voltage presets testing circuit, cell voltage feedback circuit, power sense circuit, PWM drive circuit, LED instruction drive circuit is connected
PWM drive circuit is connected with built-in MOS circuit.
Further, the Charge Management of two joint lithium battery series connection uses USB power source to power.
Further, described circuit is integrated on a chip being encapsulated as SOP14.
The beneficial effects of the utility model are: the Charge Management achieving two joint lithium battery series connection can use USB power source to power, and solves the power supply incompatibility problem of the most general discrete device scheme.This utility model achieves in the Charge Management that two joint lithium batteries are connected and supports charge cutoff voltage and the function of large current charge current adjustment, the most compatible all different capabilities, different types of lithium battery simultaneously.This utility model achieves two joint lithium batteries voltage difference after charging terminates in the Charge Management that two joint lithium batteries are connected and controls within 30mV.This utility model not only achieves above-mentioned breakthrough, and achieves and be integrated on a chip being encapsulated as SOP14 by the Charge Management of two joint lithium batteries series connection, considerably reduces exploitation and the production cost of the Charge Management scheme of two joint lithium batteries series connection.
Accompanying drawing explanation
Fig. 1 is that described a kind of two joint lithium battery series connection balances fill the block diagram controlling integrated circuit.
Detailed description of the invention
Below in conjunction with the accompanying drawings detailed description of the invention of the present utility model is described in detail.
As it is shown in figure 1, this utility model includes electrification reset circuit (POR), oscillating circuit (OSC), internal reference circuit, ADC and logical operations control circuit, electric current presets testing circuit, voltage presets testing circuit, cell voltage feedback circuit, power sense circuit, PWM drive circuit, built-in MOS circuit, LED indicate drive circuit.Electrification reset circuit is connected with oscillating circuit, oscillating circuit is connected with ADC and logical operations control circuit, ADC and logical operations control circuit preset testing circuit with electric current respectively, voltage presets testing circuit, cell voltage feedback circuit, power sense circuit, PWM drive circuit, LED instruction drive circuit is connected
PWM drive circuit is connected with built-in MOS circuit, and is integrated in by foregoing circuit on a chip being encapsulated as SOP14.
The electrification reset circuit of this novel practical carries out Global reset action when powering on.Oscillating circuit provides reference clock, and reference clock is supplied to ADC and logical operations control circuit, processes the time base of various signals as ADC and logical operations control circuit.Internal reference circuit provides benchmark accurately for internal ADC and comparator.Electric current presets testing circuit and voltage is preset testing circuit and respectively to ADC and logical operations control circuit, the parameter feedback of user preset carried out calculation process.Electric current is preset testing circuit and is allowed the lithium battery large current charge electric current of user's setting in the range of 500mA to 1000mA.Voltage is preset testing circuit and is allowed the lithium battery cutoff charge voltages of user's setting in the range of 4.17V to 4.37V.Cell voltage feedback circuit saves the Voltage Feedback of lithium batteries to ADC and logical operations control circuit by two respectively.The Voltage Feedback of USB power source or other DC5V power supply is carried out calculation process to ADC and logical operations control circuit by power sense circuit.ADC and logical operations control circuit, by the large current charge parameter set according to user, lithium battery cutoff charge voltages parameter, current battery level and current power voltage, produce correct pwm control signal after carrying out logical operations process.Pwm control signal is given PWM drive circuit by ADC and logical operations control circuit, and PWM drive circuit directly drives built-in MOS circuit.Built-in MOS circuit the most correct charging current is respectively delivered to the anode of two joint lithium batteries.In charging process, large current charge electric current will not change along with cell voltage or the change of USB voltage, consistent with the large current charge parameter that user sets.At the end of charging, the magnitude of voltage of lithium battery is consistent with the cutoff charge voltages value that user sets.In charging process, system saves lithium battery voltage at Real-time Collection two, preferentially to that batteries charging that cell voltage is on the low side, it is ensured that charging after terminating, the voltage difference of two batteries is in 30mV, to achieve the purpose that balance is filled.LED instruction drive circuit coordinates external LED, tells the duty of user's charging system in real time.
Described include electrification reset circuit (POR), oscillating circuit (OSC), internal reference circuit, ADC and logical operations control circuit, electric current presets testing circuit, voltage presets testing circuit, cell voltage feedback circuit, power sense circuit, PWM drive circuit, built-in MOS circuit, LED instruction drive circuit are existing classical circuit.
USB input refers to that system can use the DC5V power supply of all USB interface to power.Two joint lithium battery series connection refer to that the anode of a joint lithium battery connects and save negative terminal with another, only reserve 3 lines a kind of connected mode for user's charging.Balance is filled and is referred to require the lithium battery of two joints series connection in charging process, and two batteries respective magnitude of voltage great disparity can not be too big, the most the smaller the better.After occurring that a batteries exceeds threshold value than another batteries voltage, just should stop that batteries charging high to cell voltage, and that batteries that batteries voltage is low is charged.
This utility model, compared with the most general discrete device scheme, the utility model has the advantages that the Charge Management achieving two joint lithium battery series connection can use USB power source to power, solves the power supply incompatibility problem of the most general discrete device scheme.This utility model achieves in the Charge Management that two joint lithium batteries are connected and supports charge cutoff voltage and the function of large current charge current adjustment, the most compatible all different capabilities, different types of lithium battery simultaneously.This utility model achieves two joint lithium batteries voltage difference after charging terminates in the Charge Management that two joint lithium batteries are connected and controls within 30mV.This utility model not only achieves above-mentioned breakthrough, and achieves and be integrated on a chip being encapsulated as SOP14 by the Charge Management of two joint lithium batteries series connection, considerably reduces exploitation and the production cost of the Charge Management scheme of two joint lithium batteries series connection.
Of the present utility model ultimate principle, principal character and of the present utility model advantage have more than been shown and described.This utility model is not restricted to the described embodiments; described in above-described embodiment and description, principle of the present utility model is simply described; on the premise of without departing from this utility model spirit and scope, this utility model also has various changes and modifications, and these changes and improvements both fall within the range of claimed this utility model.This utility model claims scope and is defined by appending claims and equivalent thereof.
Claims (3)
1. two joint lithium batteries series connection balances fill a control integrated circuit, it is characterized in that: include electrification reset circuit (POR), oscillating circuit (OSC), internal reference circuit, ADC and logical operations control circuit, electric current presets testing circuit, voltage presets testing circuit, cell voltage feedback circuit, power sense circuit, PWM drive circuit, built-in MOS circuit, LED indicate drive circuit；Electrification reset circuit is connected with oscillating circuit, oscillating circuit is connected with ADC and logical operations control circuit, ADC and logical operations control circuit preset testing circuit with electric current respectively, voltage presets testing circuit, cell voltage feedback circuit, power sense circuit, PWM drive circuit, LED instruction drive circuit is connected
PWM drive circuit is connected with built-in MOS circuit.
2. a kind of two joint lithium battery series connection balances as claimed in claim 1 fill control integrated circuit, it is characterised in that: the Charge Management of two joint lithium battery series connection uses USB power source to power.
3. a kind of two joint lithium battery series connection balances as claimed in claim 1 fill control integrated circuit, it is characterised in that: described circuit is integrated on a chip being encapsulated as SOP14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620215644.7U CN205595827U (en) | 2016-03-21 | 2016-03-21 | Sections two, balanced control integrated circuit that fill of lithium A series of cells |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620215644.7U CN205595827U (en) | 2016-03-21 | 2016-03-21 | Sections two, balanced control integrated circuit that fill of lithium A series of cells |
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| Publication Number | Publication Date |
|---|---|
| CN205595827U true CN205595827U (en) | 2016-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620215644.7U Active CN205595827U (en) | 2016-03-21 | 2016-03-21 | Sections two, balanced control integrated circuit that fill of lithium A series of cells |
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| CN (1) | CN205595827U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787031A (en) * | 2017-03-28 | 2017-05-31 | 湖南科技大学 | A kind of fast balancing charging apparatus of series battery |
-
2016
- 2016-03-21 CN CN201620215644.7U patent/CN205595827U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787031A (en) * | 2017-03-28 | 2017-05-31 | 湖南科技大学 | A kind of fast balancing charging apparatus of series battery |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231020 Address after: 518000 706, Zhonghua science and technology building, Guangxia Road, shangmeilin, Futian District, Shenzhen, Guangdong Province Patentee after: Shenzhen Zhihua Technology Co.,Ltd. Address before: Room 801, 802, 807, and 808, Building 6, Optics Valley International Headquarters, No. 62 Optics Valley Avenue, Donghu New Technology Development Zone, Wuhan City, Hubei Province, 430000 Patentee before: WUHAN ESHINE-IC TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right |