CN210246348U - Double-battery circuit suitable for computer equipment - Google Patents
Double-battery circuit suitable for computer equipment Download PDFInfo
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- CN210246348U CN210246348U CN201921079470.6U CN201921079470U CN210246348U CN 210246348 U CN210246348 U CN 210246348U CN 201921079470 U CN201921079470 U CN 201921079470U CN 210246348 U CN210246348 U CN 210246348U
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Abstract
The utility model provides a double cell circuit suitable for computer equipment belongs to the power supply circuit field. The utility model discloses a first charging circuit, first discharge circuit, second charging circuit, second discharge circuit, the clamp circuit who links to each other with first discharge circuit and second discharge circuit input respectively, the clamp circuit output is the power supply of computer equipment system, still includes the external power supply of first switch tube module, second switch tube module, the break-make of controlling first switch tube module and second switch tube module, wherein, the break-make of first charging circuit of first switch tube module control and first discharge circuit, the break-make of second charging circuit and second discharge circuit of second switch tube module control. The utility model discloses need not special MCU or dedicated double cell balanced chip, mainly adopt conventional power diode, field effect transistor realizes, has with low costs, and the design complexity is low, verifies the lower advantage of gimmick requirement.
Description
Technical Field
The utility model relates to a power supply circuit especially relates to a double cell circuit suitable for computer equipment.
Background
The most critical double-battery charging and discharging scheme of the computers with double-battery design in the market at present is mostly realized by adopting special MCU control or expensive special double-battery equalizing chips. Whichever of the above schemes increases design complexity and design verification period, as well as material cost and procurement difficulty.
SUMMERY OF THE UTILITY MODEL
For solving the problem among the prior art, the utility model provides a double cell circuit suitable for computer equipment.
The utility model discloses a first charging circuit and the first discharge circuit that the first battery discharged for first battery charging that links to each other with first battery respectively, the second charging circuit and the second discharge circuit that the second battery charges that link to each other with the second battery respectively, the clamper circuit that links to each other with first discharge circuit and second discharge circuit input respectively, the clamper circuit output is the power supply of computer equipment system, still includes the external power supply of first switch tube module, second switch tube module, the first switch tube module of control and second switch tube module break-make, wherein, the break-make of first charging circuit of first switch tube module control and first discharge circuit, the break-make of second charging circuit and second discharge circuit of second switch tube module control.
The utility model discloses do further improvement, first switch tube module includes field effect transistor Q20, wherein, field effect transistor Q20 'S G utmost point links to each other with resistance BATR 10' S one end and adapter power input end respectively through resistance BATR9, resistance BATR10 'S other end ground connection, field effect transistor Q20' S S utmost point and D utmost point set up at second battery output, and wherein, field effect transistor Q20 'S S utmost point links to each other with second battery output, and field effect transistor Q20' S D utmost point links to each other with second battery discharge circuit respectively.
The utility model discloses make further improvement, the second switch module includes switch tube Q8262 and field effect transistor Q8259, wherein, switch tube Q8262 ' S G utmost point links to each other with resistance BATR29 and resistance R10363 ' S one end respectively, resistance R10363 ' S another termination adapter power input, resistance BATR29 ' S the other end and switch tube Q8262 ' S S utmost point ground connection, switch tube Q8262 ' S D utmost point links to each other with field effect transistor Q8259 ' S G utmost point and resistance BATR30 ' S one end respectively through resistance BATR31, resistance BATR30 ' S the other end and field effect transistor Q8259 ' S S utmost point link to each other with first charging circuit output, field effect transistor Q8259 ' S D utmost point links to each other with first battery input.
The utility model discloses make further improvement, the clamp circuit is including setting up the first zener diode at first discharge circuit output and setting up the second zener diode at the second discharge circuit output.
The utility model discloses make further improvement, first zener diode includes parallelly connected zener diode CR9547 and zener diode CR9544, the second zener diode includes parallelly connected zener diode CR9545 and zener diode CR 9546.
The utility model discloses do further improvement, when system power supply circuit includes that external adapter power charges, the first switch unit of disconnection clamp circuit power supply, wherein, first switch unit includes field effect transistor Q2502, field effect transistor Q2502 ' S the G utmost point links to each other with the chip EU2500 control pin that charges of the first module of charging, field effect transistor Q2502 ' S the D utmost point links to each other with the clamp circuit output, field effect transistor Q2502 ' S the S utmost point passes through resistance R2515 and links to each other with power output + VBATA.
The utility model discloses make further improvement, when second charging circuit still included the second battery to charge, the second switch unit of disconnection second battery output, the second switch unit includes field effect transistor Q11, field effect transistor Q11 'S the G utmost point links to each other with the charging chip U11 control pin of second charging module, field effect transistor Q11' S the D utmost point and the S utmost point connect second battery output.
Compared with the prior art, the beneficial effects of the utility model are that: and the double-battery design supports the hot plug of the battery. Under the condition that the electric quantity of the battery is enough, any battery can be replaced without shutting down the computer, so that the battery endurance time of the whole machine is prolonged. No specific requirement is required for double batteries, and only a single battery can meet the power requirement of the whole machine; the method does not need a special MCU or a special double-battery balancing chip, is mainly realized by a conventional power diode and a field effect transistor, and has the advantages of low design complexity, clear logic, lower requirement on verification methods and certain cost.
Drawings
FIG. 1 is a block diagram of the present invention;
FIG. 2 is a schematic circuit diagram of a first discharge circuit, a second discharge circuit, a clamp circuit, a first switch tube module and a second switch tube module;
FIG. 3 is a schematic diagram of a first charging circuit and a first switching unit;
fig. 4 is a schematic diagram of a second charging circuit.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
As shown in fig. 1, the utility model discloses a first charging circuit and the first discharge circuit that the first battery discharged for first battery charging that links to each other with first battery respectively, the second charging circuit and the second discharge circuit that the second battery discharged for second battery charging that link to each other with the second battery respectively, the clamp circuit that links to each other with first discharge circuit and second discharge circuit input respectively, the clamp circuit output is the power supply of computer equipment system, still includes the external power supply of first switch tube module, second switch tube module, the first switch tube module of control and second switch tube module break-make, wherein, the break-make of first charging circuit of first switch tube module control and first discharge circuit, the break-make of second switch tube module control second charging circuit and second discharge circuit.
The utility model discloses a design focus lies in the charge-discharge control of two batteries, and two parts are in the juxtaposition in equipment power supply design, have connected adapter input and equipment secondary power input simultaneously, and control unit need not special MCU or dedicated double cell balanced chip, mainly adopts conventional power diode, and the field effect transistor realizes that the design complexity is low, and the logic is clear, and it is lower to verify the gimmick requirement, also has certain advantage in the cost. The following main functions can be realized:
(1) and the double-battery design supports the hot plug of the battery. Under the condition that the electric quantity of the battery is enough, any one battery can be replaced without turning off the computer, so that the battery endurance time of the whole machine is prolonged;
(2) no specific requirement is required for double batteries, and only a single battery can meet the power requirement of the whole machine;
(3) and simultaneously charging and discharging. And when the external adapter is connected, the two batteries are charged simultaneously without mutual influence. The adapter is pulled out, the two batteries discharge with higher priority voltage until the voltages of the two batteries are approximately the same, and the two batteries discharge alternately;
(4) only any one battery is used, and the whole machine can still be normally used.
As shown in fig. 2, as an embodiment of the present invention, the first switch tube module of this embodiment includes a field effect transistor Q20, wherein, the G pole of the field effect transistor Q20 is connected to one end of a resistor bat 10 and the power input end of the adapter through a resistor bat 9, the other end of the resistor bat 10 is grounded, the S pole and the D pole of the field effect transistor Q20 are disposed at the second battery output end, wherein, the S pole of the field effect transistor Q20 is connected to the second battery output end, and the D pole of the field effect transistor Q20 is connected to the second battery discharge circuit.
The second switch module of this example includes a switch Q8262 and a field-effect transistor Q8259, wherein a G pole of the switch Q8262 is connected to one ends of a resistor bat 29 and a resistor R10363, respectively, the other end of the resistor R10363 is connected to a power input end of an adapter, the other end of the resistor bat 29 and an S pole of the switch Q8262 are grounded, a D pole of the switch Q8262 is connected to the G pole of the field-effect transistor Q8259 and one end of the resistor bat 30 through a resistor bat 31, the other end of the resistor bat 30 and the S pole of the field-effect transistor Q8259 are connected to an output end of the first charging circuit, and the D pole of the field-effect transistor Q8259 is connected to an input end of the first battery.
The clamping circuit of this example includes a first zener diode disposed at the output of the first discharge circuit and a second zener diode disposed at the output of the second discharge circuit.
The number of zener diodes provided in the first zener diode and the second zener diode may be specifically set according to actual conditions, and the greater the number of zener diodes connected in parallel, the greater the power, the lower the loss through the circuit, and preferably, the first zener diode of this example includes zener diode CR9547 and zener diode CR9544 connected in parallel, and the second zener diode includes zener diode CR9545 and zener diode CR9546 connected in parallel.
The + VCHG _ PWR and VCC _ AC _ Charge are the input ends of the adapter power supply, VCC _ BAT1 is the output end of the first battery power supply, VCC _ BAT2 is the output end of the second battery power supply, and + VBATTERY is the input end of the charging power supply of the first battery and the front end power supply of the system power supply.
As shown in fig. 3, the system power supply circuit of this embodiment includes a first switch unit for disconnecting the power supply of the clamp circuit when the external adapter power supply is charged, wherein the first switch unit includes a field effect transistor Q2502, a G pole of the field effect transistor Q2502 is connected to a control pin of a charging chip EU2500 of the first charging module, a D pole of the field effect transistor Q2502 is connected to an output terminal of the clamp circuit, and an S pole of the field effect transistor Q2502 is connected to the power output terminal + VBATA through a resistor R2515.
As shown in fig. 4, the second charging circuit of this embodiment further includes a second switch unit for disconnecting the output terminal of the second battery when the second battery is charged, the second switch unit includes a fet Q11, the G-pole of the fet Q11 is connected to the control pin of the charging chip U11 of the second charging module, and the D-pole and S-pole of the fet Q11 are connected to the output terminal of the second battery.
The first charging circuit and the second charging circuit that this example adopted are common charging circuit on the market, both can be general, and this example is under the condition of external adapter power, and the adapter power can be simultaneously for first battery and second battery charging, and at this moment, the equipment system power is supplied power by adapter power directly, in order to further increase the security and the rationality of this example, sets up first switch unit and second switch unit and passes through charging chip direct control, during the charging, cuts off the output of first battery and second battery, thereby makes the utility model discloses a circuit is more reliable.
The working principle of the embodiment is as follows:
when the power supply of the external adapter is connected, the switching tube Q8262 is opened, the path of the + VBATTERY and the VCC _ BAT1 is opened, and the first battery charging loop is opened; the fet Q20 turns off, the path of + VBATTERY and VCC _ BAT2 turns off, and the second battery discharge circuit is open. The path between the first battery and the second battery is in an off state, and the first battery and the second battery start to be charged simultaneously but cannot be charged mutually.
When the adapter is pulled out, the switching tube Q8262 is closed, the paths of + VBATTERY and VCC _ BAT1 are closed, and the one-way conduction loop from VCC _ BAT1 to + VBATTERY is opened; the fet Q20 is turned on and the unidirectional return path from VCC _ BAT2 to + vbattry is opened. The first battery and the second battery start to discharge to + VBATTERY simultaneously, the battery with higher voltage discharges to the system according to the voltage clamping principle of the power diode in the clamping circuit, and when the voltages of the two batteries are close, the two batteries start to discharge alternately.
The utility model relates to a complexity is lower, and material cost is lower, does not have the purchase degree of difficulty almost, has more obvious advantage.
The above-mentioned embodiments are the preferred embodiments of the present invention, and the scope of the present invention is not limited to the above-mentioned embodiments, and the scope of the present invention includes and is not limited to the above-mentioned embodiments, and all equivalent changes made according to the present invention are within the protection scope of the present invention.
Claims (7)
1. A dual battery circuit adapted for use with a computer device, comprising: the computer equipment system comprises a first charging circuit and a first discharging circuit, wherein the first charging circuit and the first discharging circuit are respectively connected with a first battery and used for charging the first battery, the second charging circuit and the second discharging circuit are respectively connected with a second battery and used for charging the second battery, a clamping circuit is respectively connected with the input ends of the first discharging circuit and the second discharging circuit, the output end of the clamping circuit supplies power to the computer equipment system, the computer equipment system further comprises a first switching tube module, a second switching tube module and an external power supply used for controlling the on-off of the first switching tube module and the second switching tube module, the first switching tube module controls the on-off of the first charging circuit and the first discharging circuit, and the second switching tube module controls the on-off of the second charging circuit and the second discharging circuit.
2. The dual battery circuit suitable for use in a computer device of claim 1, wherein: the first switch tube module comprises a field-effect tube Q20, wherein a G pole of the field-effect tube Q20 is connected with one end of a resistor BATR10 and an adapter power supply input end through a resistor BATR9 respectively, the other end of the resistor BATR10 is grounded, an S pole and a D pole of the field-effect tube Q20 are arranged at the output end of the second battery, an S pole of the field-effect tube Q20 is connected with the output end of the second battery, and a D pole of the field-effect tube Q20 is connected with a second battery discharge circuit respectively.
3. The dual battery circuit suitable for use in a computer device of claim 1, wherein: the second switch tube module comprises a switch tube Q8262 and a field effect tube Q8259, wherein the G pole of the switch tube Q8262 is connected with one ends of a resistor BATR29 and a resistor R10363 respectively, the other end of the resistor R10363 is connected with the power input end of an adapter, the other end of the resistor BATR29 and the S pole of the switch tube Q8262 are grounded, the D pole of the switch tube Q8262 is connected with the G pole of the field effect tube Q8259 and one end of the resistor BATR30 respectively through a resistor BATR31, the other end of the resistor BATR30 and the S pole of the field effect tube Q8259 are connected with the output end of the first charging circuit, and the D pole of the field effect tube Q8259 is connected with the input end of the first battery.
4. A dual battery circuit suitable for use in a computer device according to any of claims 1-3, wherein: the clamping circuit comprises a first voltage stabilizing diode arranged at the output end of the first discharging circuit and a second voltage stabilizing diode arranged at the output end of the second discharging circuit.
5. The dual battery circuit adapted for use in a computer device of claim 4, wherein: the first zener diode comprises zener diode CR9547 and zener diode CR9544 in parallel, and the second zener diode comprises zener diode CR9545 and zener diode CR9546 in parallel.
6. A dual battery circuit suitable for use in a computer device according to any of claims 1-3, wherein: the first charging circuit comprises a first switch unit which is used for disconnecting power supply of the clamping circuit when an external adapter power supply is charged, wherein the first switch unit comprises a field effect transistor Q2502, a G pole of the field effect transistor Q2502 is connected with a charging chip EU2500 control pin of a first charging module, a D pole of the field effect transistor Q2502 is connected with an output end of the clamping circuit, and an S pole of the field effect transistor Q2502 is connected with a power output end + VBATA (voltage source output) through a resistor R2515.
7. The dual battery circuit adapted for use in a computer device of claim 6, wherein: the second charging circuit further comprises a second switch unit for disconnecting the output end of the second battery when the second battery is charged, the second switch unit comprises a field-effect tube Q11, the G pole of the field-effect tube Q11 is connected with the control pin of a charging chip U11 of the second charging module, and the D pole and the S pole of the field-effect tube Q11 are connected with the output end of the second battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921079470.6U CN210246348U (en) | 2019-07-11 | 2019-07-11 | Double-battery circuit suitable for computer equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921079470.6U CN210246348U (en) | 2019-07-11 | 2019-07-11 | Double-battery circuit suitable for computer equipment |
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| Publication Number | Publication Date |
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| CN210246348U true CN210246348U (en) | 2020-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921079470.6U Active CN210246348U (en) | 2019-07-11 | 2019-07-11 | Double-battery circuit suitable for computer equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110311441A (en) * | 2019-07-11 | 2019-10-08 | 深圳市亿道信息股份有限公司 | A kind of double cell circuit suitable for computer equipment |
| CN115133629A (en) * | 2022-09-02 | 2022-09-30 | 深圳市单源半导体有限公司 | Charging control circuit, control method and lithium battery high-side driving circuit |
-
2019
- 2019-07-11 CN CN201921079470.6U patent/CN210246348U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110311441A (en) * | 2019-07-11 | 2019-10-08 | 深圳市亿道信息股份有限公司 | A kind of double cell circuit suitable for computer equipment |
| CN110311441B (en) * | 2019-07-11 | 2024-05-03 | 深圳市亿道信息股份有限公司 | Dual-battery circuit suitable for computer equipment |
| CN115133629A (en) * | 2022-09-02 | 2022-09-30 | 深圳市单源半导体有限公司 | Charging control circuit, control method and lithium battery high-side driving circuit |
| CN115133629B (en) * | 2022-09-02 | 2022-11-25 | 深圳市单源半导体有限公司 | Charging control circuit, control method and lithium battery high-side driving circuit |
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