CN204361725U - The circuit board of power management and portable power source - Google Patents
The circuit board of power management and portable power source Download PDFInfo
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- CN204361725U CN204361725U CN201420859583.9U CN201420859583U CN204361725U CN 204361725 U CN204361725 U CN 204361725U CN 201420859583 U CN201420859583 U CN 201420859583U CN 204361725 U CN204361725 U CN 204361725U
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Abstract
The utility model provides a kind of circuit board and portable power source of power management, and circuit board comprises: charge management circuit, booster circuit, charging control circuit and protective circuit; Wherein, charge management circuit, booster circuit and charging control circuit are integrated into charging control integration chip; Charging control integration chip after integrated be provided with earth terminal, the input be connected with external power source, connect protective circuit protection end, connect the output of power consumption equipment and connect the battery-end of rechargeable battery; protective circuit is separated setting with charging control integration chip, and protective circuit is connected with charging control circuit, charge management circuit and booster circuit respectively by protection end.The utility model overcomes the deficiency that existing portable power source adopts separately Separated type circuit board and integrated form circuit board to exist separately, has the advantage of high stability, high security and low cost.
Description
Technical field
The utility model relates to the field of power supplies of electronic product, is specifically related to a kind of circuit board of power management and applies the portable power source of this circuit board.
Background technology
Along with the high speed development of electronic technology, the function of the electronic products such as various mobile phone, panel computer, digital camera, electronic reader, audio/video multimedia player from strength to strength, need the electricity of consumption also increasing, but volume does less and less simultaneously, battery also and then does less and less, and its battery capacity does not catch up with the demand of user far away.In order to provide electric energy whenever and wherever possible to the electronic product carried with, industry devises the portable power source integrating power supply and charge function.
The circuit board of the power management of existing portable power source is generally adopted in two ways: separate type and integrated form.Separate type refers to and individually designs in different chips by the protective circuit of portable power source, charge management circuit, booster circuit, charging control circuit; Integrated form refers to and protective circuit, charge management circuit, booster circuit, charging control circuit is integrated in a chip.
Adopt the portable power source of separation design owing to using multiple chip, but multiple chip disperses independence separately, when realizing, each chip all needs the arrangement carrying out power line, ground wire, makes the wiring complexity of circuit board be unfavorable for producing assembling, has the advantages that fail safe is high, cost is high.Adopt the portable power source of integrated form design by protective circuit, charge management circuit, booster circuit, charging control circuit at a core Embedded; and be provided with unified power input, earth terminal and output etc.; reduce the wiring complexity of circuit board; be conducive to producing assembling; have the advantages that cost is low; but the shortcoming of integrated form is if wherein any one circuit breaks down, and needs to change whole circuit board, causes portable power source fail safe to reduce.
Utility model content
Goal of the invention of the present utility model is the defect for prior art, a kind of circuit board and portable power source of power management are provided, overcome the deficiency that existing portable power source adopts separately Separated type circuit board and integrated form circuit board to exist separately, improve the fail safe of portable power source management, reduce costs.
The utility model provides a kind of circuit board of power management, comprising: charge management circuit, booster circuit, charging control circuit and protective circuit; Wherein, described charge management circuit, booster circuit and charging control circuit are integrated into charging control integration chip; Described charging control integration chip be provided with earth terminal, the input be connected with external power source, connect described protective circuit protection end, connect the output of power consumption equipment and connect the battery-end of rechargeable battery; Described protective circuit is separated setting with described charging control integration chip, and described protective circuit is connected with described charging control circuit, described charge management circuit and described booster circuit respectively by described protection end.
Further, described protective circuit comprises and overcharging/over-discharge protection circuit and overvoltage crowbar, described in overcharge/over-discharge protection circuit is connected with described charge management circuit with the protection end of overvoltage crowbar by described charging control integration chip.
Further, described protective circuit also comprises short-circuit protection circuit, and described short-circuit protection circuit is connected with described charging control circuit by the protection end of described charging control integration chip.
Further, described short-circuit protection circuit is provided with semistor.
Further, described protective circuit also comprises the temperature detection protective circuit for detecting described charging-cell temperature, and described temperature detection protective circuit is connected with described charging control circuit by the protection end of described charging control integration chip.
Further, described temperature detection protective circuit is provided with negative tempperature coefficient thermistor.
Further, described temperature detection protective circuit comprises ON-OFF control circuit; Described ON-OFF control circuit exports the first control signal when the temperature described rechargeable battery being detected is 60-65 DEG C to described charging control circuit; Described charging control circuit receives the charge/discharge of described first control signal time-out to described rechargeable battery; Described ON-OFF control circuit exports the second control signal when the temperature described rechargeable battery being detected is more than 65 DEG C to described charging control circuit; Described charging control circuit receives the charge/discharge of described second control signal cut-out to described rechargeable battery.
Further, described protective circuit is integrated into independent protective circuit integration module.
Further, charging control integration chip is also integrated with electric quantity display circuit, and electric quantity display circuit connects charge management circuit to show the electricity of rechargeable battery.
The utility model provides a kind of portable power source applying the circuit board of above-mentioned power management, and this portable power source also comprises: rechargeable battery; Rechargeable battery is connected with charging control circuit integrated chip and protective circuit.
Further, rechargeable battery is the rechargeable battery of cobalt acid lithium cell, nickel cobalt manganese battery core or LiFePO4 battery core.
The portable power source of the circuit board of the applied power source management that the utility model provides; charge management circuit, booster circuit and charging control circuit are integrated into charging control integration chip; and protective circuit is arranged separately; because protective circuit is the circuit being easy in each circuit break down; by protective circuit being arranged separately the independent reliability and safety of the protective circuit that can increase portable power source; improve the safety and stability of portable power source, there is the advantage of low cost.
Accompanying drawing explanation
The functional schematic block diagram of the portable power source embodiment one of the circuit board of the applied power source management that Fig. 1 provides for the utility model.
The functional schematic block diagram of the portable power source embodiment two of the circuit board of the applied power source management that Fig. 2 provides for the utility model.
Embodiment
For fully understanding the object of the utility model, feature and effect, by following concrete execution mode, the utility model is elaborated, but the utility model is not restricted to this.
Embodiment one
The functional schematic block diagram of the portable power source embodiment one of the circuit board of the applied power source management that Fig. 1 provides for the utility model, as shown in Figure 1, this portable power source comprises: the circuit board 100 of power management and rechargeable battery 200.The circuit that the circuit board 100 of power management is arranged comprises: charge management circuit 112, booster circuit 113, charging control circuit 111 and protective circuit 120.In the utility model, charge management circuit 112, booster circuit 113 and charging control circuit 111 are integrated into charging control integration chip 110.Protective circuit 120 does not integrate with foregoing circuit, but is separated setting.
Charging control integration chip 110 is as the integrated chip being packaged with some circuit; it has externally unified port, comprises: earth terminal GND, the input VDD be connected with external power source, the protection end PRO connecting protective circuit, connect the output OUT of power consumption equipment and connect the battery-end BAT of rechargeable battery 200.Wherein, protective circuit 120 connects the protection end PRO of charging control integration chip 110, and is connected with charging control circuit 111, charge management circuit 112 and booster circuit 113 by protection end PRO.Because protective circuit is connected with charging control integration chip 110, realize rechargeable battery 200 by charging control integration chip 110 and be indirectly connected with protective circuit.
Charging control circuit 111 is for controlling discharge and recharge and the power supply input of portable power source.Charge management circuit 112 manages for the charging process of the rechargeable battery 200 to portable power source.Booster circuit 113 exports for being boosted to by the output voltage of rechargeable battery 200 to the voltage such as 5V of the power consumption equipment needing charging and charges.
Protective circuit is for guaranteeing the circuit safety of portable power source of the present utility model, and protective circuit of the present utility model is integrated into protective circuit integration module.In charge or discharge process; protective circuit is used for the safe condition of testing circuit and the use safety of protection power source circuit; comprise overcharge, over-discharge can, electric current are too high, overtension; and then send a signal to charging control circuit 111; by charging control circuit 111 charge closing management circuit 112 and booster circuit 113, thus protect the safety of this portable power source and power consumption equipment.
Protective circuit in the present embodiment is integrated into independent protective circuit integration module; and be connected with the protection end PRO of charging control integration chip 110; protective circuit integration module is configured to integrated module, and is convenient to be assembled in the lump on the circuit board 100 of power management with charging control integration chip 110.In the utility model, protective circuit is integrated into modularization and arranges, make the setting of protective circuit independent of charging control integration chip 110, according to the demand of different power managements, different protective circuits can be increased and arrange.In addition, in the circuit board of power management is safeguarded, be convenient to maintenance or replace protective circuit, reducing use cost.
In order to further be convenient to ease of use and the security reliability of the portable power source of the circuit board applying power management of the present utility model; in a particular embodiment; in order to increase use safety and the reliability of portable power source, protective circuit integration module can also temperature sensing circuit.Charging control integration chip 110 is also integrated with electric quantity display circuit, and electric quantity display circuit connects charge management circuit 112 to show the electricity of rechargeable battery 200.By checking the electricity of the rechargeable battery 200 of display, user can select the need of being portable power source charging according to the user demand of oneself.Protective circuit of the present utility model is integrated into protective circuit integration module; integrated for protective circuit batch micro operations and assembling is convenient to use; and the integration module of protective circuit arranges different protective circuit functions, can increase according to different security requiremenies or select different protective circuits to arrange.
Above-mentioned rechargeable battery 200 can be the rechargeable battery of cobalt acid lithium cell, nickel cobalt manganese battery core or LiFePO4 battery core.
Embodiment two
The functional schematic block diagram of the portable power source embodiment two of the circuit board of the applied power source management that Fig. 2 provides for the utility model, as shown in Figure 2, this portable power source comprises: the circuit board 100 of power management and rechargeable battery 200.The circuit that the circuit board 100 of power management is arranged comprises: charge management circuit 112, booster circuit 113, charging control circuit 111 and protective circuit 120.In the utility model, charge management circuit 112, booster circuit 113 and charging control circuit 111 are integrated into charging control integration chip 110.Protective circuit 120 does not integrate with foregoing circuit, but is separated setting.
About the introduction of charging control integration chip 110 and circuit integrated on it, rechargeable battery 200 see the description of embodiment one, can not repeat them here.
Relevant protective circuit, comprises following circuit alternatively:
(1) overcharge/over-discharge protection circuit 121 and overvoltage crowbar 122.
Overcharge/over-discharge protection circuit 121 and overvoltage crowbar 122 be connected charge management circuit 112 by the protection end PRO of charging control integration chip 110.Overcharge/over-discharge protection circuit 121 and overvoltage crowbar 122 protect rechargeable battery 200 according to the change in voltage of rechargeable battery 200.Such as overcharge/whether over-discharge protection circuit 121 reach setting voltage according to the voltage of rechargeable battery 200 in charge/discharge process; determine whether the charge/discharge circuit cutting off rechargeable battery 200; avoid damaging rechargeable battery in charge and discharge process, realize rechargeable battery 200 and overcharge/Cross prevention.
(2) short-circuit protection circuit 123
Short-circuit protection circuit 123 is connected with charging control circuit 111 by the protection end PRO of charging control integration chip 110.
Particularly; short-circuit protection circuit 123 is provided with semistor (PositiveTemperature Coefficient; be called for short PTC thermistor), short-circuit protection circuit 123 is connected with charging control circuit 111 by the protection end PRO of charging control integration chip 110.It is lower that PTC thermistor has the resistance value when temperature is lower, and the characteristic that when temperature rises to a certain degree, resistance value sharply rises, sometimes resistance value can reach the order of magnitude of more than 3 ~ 4.Therefore bring temperature to rise by himself heating after PTC thermistor energising and cause resistance value sharply to increase, thus limiting the electric current in circuit, there is good security performance.In a particular embodiment; PTC thermistor can be connected on inside the current supply circuit of short-circuit protection circuit 123; once the big current that short-circuit protection circuit 123 is short-circuited; PTC thermistor temperature will raise under the effect of big current; so PTC thermistor will to increase sharply itself resistance value due to its PTC effect; thus play the effect of open circuit, achieve the protection to circuit.
(3) temperature detection protective circuit 124
Because the security performance of the rechargeable battery of different materials is different, the security performance of the rechargeable battery such as rechargeable battery of cobalt acid lithium cell of some material is poor, and in the process of charge/discharge, temperature can be too high, thus may cause the serious consequence of blast.Therefore, the utility model additionally provides temperature detection protective circuit 124, for the protection of the rechargeable battery that security performance is poor.Temperature detection protective circuit 124 connects charging control circuit 111 by the protection end PRO of charging control integration chip 110.
In a particular embodiment, temperature detection protective circuit 124 can be negative tempperature coefficient thermistor (Negative Temperature Coefficient is called for short: NTC thermistor) protective circuit.NTC thermistor is to have the manganese of semiconductor property, cobalt, the metal oxide such as nickel and copper for main material, when temperature is low, the number of the charge carrier (electronics and hole) of these metal oxide materials is less, so the resistance value of NTC thermistor is higher; Along with the rising of temperature, charge carrier number increases, and the resistance value of NTC thermistor also decreases.The temperature value of rechargeable battery 200 is detected at interval of a period of time.Particularly, the resistance value of the NTC thermistor in this moment is obtained by modes such as calculating, and then obtain the temperature value of the NTC thermistor in this moment according to the NTC characteristic of this NTC thermistor, and the temperature value of the rechargeable battery 200 detected using the temperature value of this NTC thermistor as this moment.So temperature detection protective circuit 124 can carry out corresponding protection act according to the temperature value of the rechargeable battery 200 detected to portable power source.The setting in the time interval detected can be determined as the case may be, is not specifically limited herein.
Generally, when the temperature value of rechargeable battery 200 is within 10-60 DEG C, rechargeable battery 200 is safer, and portable power source can keep normal work.Therefore temperature detection protective circuit 124 can be set to protect when the temperature value of the rechargeable battery 200 detected is more than 60 DEG C.Such as, the time interval of detection is set to 5 minutes, namely detects once the temperature value of rechargeable battery 200 now every 5 minutes.
Further; temperature detection protective circuit 124 comprises ON-OFF control circuit; when the temperature value of the rechargeable battery 200 detected is 60-65 DEG C; ON-OFF control circuit exports the first control signal to charging control circuit 111; charging control circuit 111 receives the charge/discharge of the first control signal time-out to rechargeable battery 200, thus avoids the temperature value of rechargeable battery 200 to continue to raise.When the temperature value of the rechargeable battery 200 detected is reduced to below 60 DEG C, ON-OFF control circuit controls the charge/discharge that charging control circuit 111 continues rechargeable battery 200.And when the temperature of the rechargeable battery 200 detected is more than 65 DEG C, ON-OFF control circuit exports the second control signal to charging control circuit 111, charging control circuit 111 receives the charge/discharge circuit of the second control signal cut-out to rechargeable battery 200, avoid rechargeable battery 200 to work in its flagrant environment of institute with this, thus enhance the fail safe of rechargeable battery 200.
In order to further be convenient to the ease of use of the portable power source of the circuit board applying power management of the present utility model, charging control integration chip 110 is also integrated with electric quantity display circuit, and electric quantity display circuit connects charge management circuit 112 to show the electricity of rechargeable battery 200.By checking the electricity of the rechargeable battery 200 of display, user can select the need of being portable power source charging according to the user demand of oneself.
Some circuit that protective circuit in embodiment two comprises are integrated into protective circuit integration module; and be connected with the protection end PRO of charging control integration chip 110; protective circuit integration module is set to integrated module, and is convenient to be assembled in the lump on the circuit board 100 of power management with charging control integration chip 110.In the utility model, protective circuit is integrated into modularization and arranges, make the setting of protective circuit independent of charging control integration chip 110, according to the demand of different power managements, different protective circuits can be increased and arrange.In addition, in the circuit board of power management is safeguarded, protective circuit is integrated into modularization and arranges, be convenient to maintenance or replace protective circuit, reducing use cost.
The portable power source of the circuit board of the applied power source management that the utility model provides; charge management circuit, booster circuit and charging control circuit are integrated into charging control integration chip; and protective circuit is separated setting; and protective circuit can be integrated into protective circuit integration module; overcome the deficiency that existing portable power source adopts separately Separated type circuit board and integrated form circuit board to exist separately, be in particular in the following aspects:
(1) control integration chip and the protective circuit of only charging in the utility model needs to carry out to encapsulate or integrated, comprise routing power and ground wire, compared with all carrying out being separated setting with each chip of existing Separated type circuit board, greatly reduce the complexity of packaging technology; Further, protective circuit is integrated into protective circuit integration module, is conducive to being assembled in the lump in same PCB with charging control integration chip, is convenient to produce assembling, is convenient to big batchization manufacture and assembles use, thus reduce manufacturing cost;
(2) compared with existing integrated form circuit board, the utility model, while realizing the integrated level to a certain degree of portable power source, has ensured the independent reliability of protective circuit.On the one hand; in the fabrication process can specifically according to the performance of rechargeable battery; different protective circuits is selected to arrange; such as; can according to the demand of different power managements, from above-described embodiment enumerate overcharge/over-discharge protection circuit and overvoltage crowbar, short-circuit protection circuit, select one or more being integrated in protective circuit temperature detection protective circuit.On the other hand; if in use protective circuit goes wrong, be also convenient to carry out independent maintenance or maintenance, and be unlikely to change whole circuit board; improve the convenience of operation and maintenance, make this portable power source have the advantage of high stability, high security and low cost.
Claims (10)
1. a circuit board for power management, comprising: charge management circuit, booster circuit, charging control circuit and protective circuit;
It is characterized in that, described charge management circuit, booster circuit and charging control circuit are integrated into charging control integration chip; Described charging control integration chip be provided with earth terminal, the input be connected with external power source, connect described protective circuit protection end, connect the output of power consumption equipment and connect the battery-end of rechargeable battery; Described protective circuit is separated setting with described charging control integration chip, and described protective circuit is connected with described charging control circuit, described charge management circuit and described booster circuit respectively by described protection end.
2. circuit board according to claim 1; it is characterized in that; described protective circuit comprises and overcharging/over-discharge protection circuit and overvoltage crowbar, described in overcharge/over-discharge protection circuit is connected with described charge management circuit with the protection end of overvoltage crowbar by described charging control integration chip.
3. circuit board according to claim 1, is characterized in that, described protective circuit also comprises short-circuit protection circuit, and described short-circuit protection circuit is connected with described charging control circuit by the protection end of described charging control integration chip.
4. circuit board according to claim 3, is characterized in that, described short-circuit protection circuit is provided with semistor.
5. circuit board according to claim 1; it is characterized in that; described protective circuit also comprises the temperature detection protective circuit for detecting described charging-cell temperature, and described temperature detection protective circuit is connected with described charging control circuit by the protection end of described charging control integration chip.
6. circuit board according to claim 5, is characterized in that, described temperature detection protective circuit is provided with negative tempperature coefficient thermistor.
7. circuit board according to claim 5, is characterized in that, described temperature detection protective circuit comprises ON-OFF control circuit;
Described ON-OFF control circuit exports the first control signal when the temperature described rechargeable battery being detected is 60-65 DEG C to described charging control circuit; Described charging control circuit receives the charge/discharge of described first control signal time-out to described rechargeable battery;
Described ON-OFF control circuit exports the second control signal when the temperature described rechargeable battery being detected is more than 65 DEG C to described charging control circuit; Described charging control circuit receives the charge/discharge of described second control signal cut-out to described rechargeable battery.
8. the circuit board according to any one of claim 1-7, is characterized in that, described protective circuit is integrated into independent protective circuit integration module.
9. application rights requires a portable power source for the circuit board of the power management described in any one of 1-8, and it is characterized in that, also comprise: rechargeable battery, described rechargeable battery is connected with described charging control circuit integrated chip and protective circuit.
10. portable power source according to claim 9, is characterized in that, described rechargeable battery is the rechargeable battery of cobalt acid lithium cell, nickel cobalt manganese battery core or LiFePO4 battery core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420859583.9U CN204361725U (en) | 2014-12-30 | 2014-12-30 | The circuit board of power management and portable power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420859583.9U CN204361725U (en) | 2014-12-30 | 2014-12-30 | The circuit board of power management and portable power source |
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| Publication Number | Publication Date |
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| CN204361725U true CN204361725U (en) | 2015-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420859583.9U Active CN204361725U (en) | 2014-12-30 | 2014-12-30 | The circuit board of power management and portable power source |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106026264A (en) * | 2016-06-24 | 2016-10-12 | 北京小米移动软件有限公司 | Terminal short circuit protection method and device |
-
2014
- 2014-12-30 CN CN201420859583.9U patent/CN204361725U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106026264A (en) * | 2016-06-24 | 2016-10-12 | 北京小米移动软件有限公司 | Terminal short circuit protection method and device |
| CN106026264B (en) * | 2016-06-24 | 2019-01-15 | 北京小米移动软件有限公司 | The method and device of terminal short circuit protection |
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