CN202111488U - Back-up power supply device for lithium battery set - Google Patents
Back-up power supply device for lithium battery set Download PDFInfo
- Publication number
- CN202111488U CN202111488U CN2011201589833U CN201120158983U CN202111488U CN 202111488 U CN202111488 U CN 202111488U CN 2011201589833 U CN2011201589833 U CN 2011201589833U CN 201120158983 U CN201120158983 U CN 201120158983U CN 202111488 U CN202111488 U CN 202111488U
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- control circuit
- lithium battery
- power supply
- fet
- triode
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Abstract
The utility model discloses a back-up power supply device for a lithium battery set. The back-up power supply device for a lithium battery set comprises a direct current power supply for converting commercial power to direct current, a lithium battery set composed of a plurality of lithium batteries, a power utilization load connected to the direct current power supply, a discharging control circuit, a charging control circuit, and a central processing unit. The discharging control circuit and the charging control circuit are connected in a series manner. The discharging control circuit is arranged at a contact between the direct current power supply and the power utilization load. The charging control circuit is arranged at a contact between the direct current power supply and the lithium battery set. The discharging control circuit is used for transmitting the electric energy of the lithium battery set to the power utilization load. The charging control circuit is used for transmitting the electric energy from the direct current power supply to the lithium battery set. The switching-on and switching-off of both the discharging control circuit and the charging control circuit are controlled by the central processing unit. The back-up power supply device of the utility model allows charging or discharging to be interrupted based on the health state of the lithium battery set, thereby effectively protecting the lithium battery set and enabling the batteries to be replaced in time before errors occur so as to avoid loss.
Description
Technical field
The utility model relates to electronics and power technique fields, is specifically related to a kind of back-up power apparatus that is used for the lithium battery group.
Background technology
Along with China's high ferro construction gets into a high-speed development period; To power consumption equipment in the high ferro; Especially the power management of ticket checking gate becomes the difficult point of art technology, because unexpected power failure or power failure can make the action of ticket checking imperfect, and causes the loss of passenger and railway; Secondly, often there is multiple anomaly in electrical network, for example: grid power blackout, electrical network quits work, no-voltage output; Pressure drop, line voltage are lower than nominal voltage 15%-20%, and the time possibly continue the several seconds; Surge, surging are also claimed in surge, and line voltage moment is higher than nominal voltage more than 10%, the time remaining several seconds; Continue under-voltage sustained overvoltage line and make an uproar, because of poor radio frequency or the electromagnetic interference of introducing of circuit shielding; Frequency drift, the mains frequency deviation that the generator instability causes; Switching transient is also claimed transient state, and the voltage deviation that is caused by electric equipment switch or discharge sometimes can be up to 20000 volts, but the duration is extremely short, only counts nanoseconds; Harmonic wave, in the electrical network by the electric equipment of nonlinear characteristic produce to the sine-shaped interference of alternating current.Thereby need can, this situation guarantee the completion of ticket checking transaction when taking place and stop new transaction by a kind of power supply through the communication apprizing system.This just requires, and the complete machine power supply possesses the ability of reserve, generally can be equipped with the form that battery pack is formed uninterrupted power supply.
Generally speaking, if having a power failure and during the less generation of fault battery be in the state of shelving that is full of, the temperature of battery life and environment etc. are relevant.If the power failure fault frequently takes place, battery life is relevant with usage frequency again.So the life-span of estimating battery is difficult to, and simply uses time (such as 3 years) standard to be used as overhauling and changing the foundation or the non insurance of battery pack, or can cause certain waste.In addition, this kind equipment relatively disperses in the high ferro, and frequent manual work is patrolled, and very difficulty is also uneconomical.
Summary of the invention
The utility model provides a kind of back-up power apparatus that is used for the lithium battery group; This back-up source device can interrupt charging or discharge, thereby effectively protect the lithium battery group according to the health status of lithium battery group; And can before fault takes place, in time change battery, avoided loss.
For achieving the above object, the technical scheme that the utility model adopts is:
A kind of back-up power apparatus that is used for the lithium battery group comprises: be used for civil power is converted into the DC power supply of direct current, by the lithium battery group that some lithium batteries are formed, be connected to the electric loading of using of said DC power supply; The charge/discharge control circuit of series connection and charging control circuit are between said DC power supply and contact and lithium battery group with electric loading; This charge/discharge control circuit be used for the electric energy transmitting of lithium battery group give use electric loading, this charging control circuit be used for from the electric energy transmitting of DC power supply to the lithium battery group;
The collector electrode of the 1st triode is connected to the base stage of the 2nd FET in the said charge/discharge control circuit; The grounded emitter of the 1st triode; The base stage of the 1st triode is accepted the discharge break-make control signal from CPU; The source electrode of the 2nd FET connects the positive pole of lithium battery group, and the drain electrode of the 2nd FET is connected to DC power supply and with the contact of electric loading; Said discharge break-make control signal makes the 1st triode conducting, thereby makes the 2nd FET conducting, and the lithium battery group is passed through the 2nd FET to the electricity consumption electric;
The grounded emitter of the 3rd triode in the said charging control circuit; The collector electrode of the 3rd triode is connected to the base stage of the 4th FET; The 4th FET source electrode is connected to DC power supply and with the contact of electric loading, imports from the 3rd transistor base from the charging break-make control signal of said CPU, and this charging break-make control signal is controlled the 3rd triode break-make; Thereby make the 4th FET conducting, DC power supply charges to the lithium battery group;
The break-make of the said charge/discharge control circuit of one central processing unit controls and the break-make of charging control circuit.
Related content in the technique scheme is explained as follows:
1, in the such scheme; Also comprise in the said charge/discharge control circuit: the 25th resistance is between the collector electrode of the base stage of the 2nd FET and the 1st triode; The 26th resistance is between the positive pole of the contact of the base stage of the 25th resistance and the 2nd FET and lithium battery group, and the 1st voltage stabilizing didoe is parallelly connected with said the 26th resistance.
2, in the such scheme; The positive pole of the 2nd voltage stabilizing didoe is connected to the base stage of the 4th FET in the said charging control circuit; The negative pole of the 2nd voltage stabilizing didoe is connected to the source electrode of the 4th FET; The 2nd voltage stabilizing didoe parallel connection therewith of the 30th resistance, the 28th resistance is between the collector electrode of the 2nd voltage stabilizing didoe positive pole and the 3rd triode.
Because the technique scheme utilization, the utility model compared with prior art has advantage and effect:
The utility model back-up power apparatus can interrupt charging or discharge, thereby effectively protect the lithium battery group according to the health status of lithium battery group, and can before fault takes place, in time change battery, has avoided loss; Secondly, can in time respond, thereby effectively protect the lithium battery group, make the user can use battery fully and before significant trouble takes place, in time change battery, promptly economy is avoided again losing.
Description of drawings
Accompanying drawing 1 is the utility model circuit theory diagrams;
Accompanying drawing 2 is the utility model circuit diagram.
In the above accompanying drawing: 1, DC power supply; 2, lithium battery group; 3, use electric loading; 4, charge/discharge control circuit; 5, charging control circuit; 6, CPU.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described:
Embodiment: a kind of back-up power apparatus that is used for the lithium battery group; Shown in accompanying drawing 1-2; Comprise: the DC power supply 1 that is used for civil power is converted into direct current; By the lithium battery group 2 that some lithium batteries are formed, be connected to the usefulness electric loading 3 of said DC power supply 1, the charge/discharge control circuit 4 of series connection and charging control circuit 5 are between said DC power supply 1 and contact and lithium battery group 2 with electric loading 3; This charge/discharge control circuit 4 is used for the electric energy transmitting of lithium battery group 2 is given with electric loading 3, this charging control circuit 5 be used for from the electric energy transmitting of DC power supply 1 to lithium battery group 2;
The collector electrode of the 1st triode Q1 is connected to the base stage of the 2nd FET Q2 in the said charge/discharge control circuit 4; The grounded emitter of the 1st triode Q1; The base stage of the 1st triode Q1 is accepted the discharge break-make control signal PS from CPU 6; The source electrode of the 2nd FET Q2 connects the positive pole of lithium battery group 2, and the drain electrode of the 2nd FET Q2 is connected to DC power supply 1 and with the contact of electric loading 3; Said discharge break-make control signal PS makes the 1st triode Q1 conducting, thereby makes the 2nd FET Q2 conducting, and lithium battery group 2 is passed through the 2nd FET Q2 to supplying power with electric loading 3;
The grounded emitter of the 3rd triode Q3 in the said charging control circuit 5; The collector electrode of the 3rd triode Q3 is connected to the base stage of the 4th FET Q4; The 4th FET Q4 source electrode is connected to DC power supply 1 and with the contact of electric loading 3, imports from the 3rd triode Q3 base stage from the charging break-make control signal CHG of said CPU 6, and this charging break-make control signal CHG controls the 3rd triode Q3 break-make; Thereby make the 4th FET Q4 conducting, DC power supply 1 is to 2 chargings of lithium battery group;
The break-make of the said charge/discharge control circuit 4 of one CPU, 6 controls and the break-make of charging control circuit 5.
Also comprise in the above-mentioned charge/discharge control circuit 4: the 25th resistance R 25 is between the collector electrode of the base stage of the 2nd FET Q2 and the 1st triode Q1; The 26th resistance R 26 is between the positive pole of the contact of the base stage of the 25th resistance R 25 and the 2nd FET Q2 and lithium battery group 2, and the 1st voltage stabilizing didoe Z1 is parallelly connected with said the 26th resistance R 26.
The positive pole of the 2nd voltage stabilizing didoe Z2 is connected to the base stage of the 4th FET Q4 in the above-mentioned charging control circuit 5; The negative pole of the 2nd voltage stabilizing didoe Z2 is connected to the source electrode of the 4th FET Q4; The 2nd voltage stabilizing didoe Z2 parallel connection therewith of the 30th resistance, the 28th resistance R 28 is between the collector electrode of the 2nd voltage stabilizing didoe Z2 positive pole and the 3rd triode.
The foregoing description only is the technical conceive and the characteristics of explanation the utility model, and its purpose is to let the personage who is familiar with this technology can understand content of the utility model and enforcement according to this, can not limit the protection range of the utility model with this.All equivalences of being done according to the utility model spirit change or modify, and all should be encompassed within the protection range of the utility model.
Claims (3)
1. back-up power apparatus that is used for the lithium battery group; Comprise: the DC power supply (1) that is used for civil power is converted into direct current; The lithium battery group of forming by some lithium batteries (2); Be connected to the usefulness electric loading (3) of said DC power supply (1); It is characterized in that: also comprise: charge/discharge control circuit of series connection (4) and charging control circuit (5) are positioned between said DC power supply (1) and the contact and lithium battery group (2) with electric loading (3); This charge/discharge control circuit (4) is used for the electric energy transmitting of lithium battery group (2) is given with electric loading (3), this charging control circuit (5) be used for from the electric energy transmitting of DC power supply (1) to lithium battery group (2);
The collector electrode of the 1st triode (Q1) is connected to the base stage of the 2nd FET (Q2) in the said charge/discharge control circuit (4); The grounded emitter of the 1st triode (Q1); The base stage of the 1st triode (Q1) is accepted the discharge break-make control signal (PS) from CPU (6); The source electrode of the 2nd FET (Q2) connects the positive pole of lithium battery group (2), and the drain electrode of the 2nd FET (Q2) is connected to DC power supply (1) and with the contact of electric loading (3); Said discharge break-make control signal (PS) makes the 1st triode (Q1) conducting, thereby makes the 2nd FET (Q2) conducting, and lithium battery group (2) is passed through the 2nd FET (Q2) to supplying power with electric loading (3);
The grounded emitter of the 3rd triode (Q3) in the said charging control circuit (5); The collector electrode of the 3rd triode (Q3) is connected to the base stage of the 4th FET (Q4); The 4th FET (Q4) source electrode is connected to DC power supply (1) and with the contact of electric loading (3); Charging break-make control signal (CHG) from said CPU (6) is imported from the 3rd triode (Q3) base stage; This charging break-make control signal (CHG) control the 3rd triode (Q3) break-make, thus make the 4th FET (Q4) conducting, and DC power supply (1) charges to lithium battery group (2);
One CPU (6) is controlled the break-make of said charge/discharge control circuit (4) and the break-make of charging control circuit (5).
2. back-up power apparatus according to claim 1; It is characterized in that: said charge/discharge control circuit also comprises in (4): the 25th resistance (R25) is positioned between the collector electrode of base stage and the 1st triode (Q1) of the 2nd FET (Q2); The 26th resistance (R26) is positioned between the positive pole of contact and lithium battery group (2) of base stage of the 25th resistance (R25) and the 2nd FET (Q2), and the 1st voltage stabilizing didoe (Z1) is parallelly connected with said the 26th resistance (R26).
3. back-up power apparatus according to claim 1; It is characterized in that: the positive pole of the 2nd voltage stabilizing didoe (Z2) is connected to the base stage of the 4th FET (Q4) in the said charging control circuit (5); The negative pole of the 2nd voltage stabilizing didoe (Z2) is connected to the source electrode of the 4th FET (Q4); The 30th resistance (R30) the 2nd voltage stabilizing didoe (Z2) parallel connection therewith, the 28th resistance (R28) are positioned between the collector electrode of the 2nd voltage stabilizing didoe (Z2) positive pole and the 3rd triode (Q3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201589833U CN202111488U (en) | 2011-05-18 | 2011-05-18 | Back-up power supply device for lithium battery set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201589833U CN202111488U (en) | 2011-05-18 | 2011-05-18 | Back-up power supply device for lithium battery set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202111488U true CN202111488U (en) | 2012-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201589833U Expired - Fee Related CN202111488U (en) | 2011-05-18 | 2011-05-18 | Back-up power supply device for lithium battery set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202111488U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102946093A (en) * | 2012-11-09 | 2013-02-27 | 谢亚平 | Short-circuit protection circuit of lithium battery |
| CN110098652A (en) * | 2019-01-18 | 2019-08-06 | 青岛海信移动通信技术股份有限公司 | A kind of mobile phone, mobile phone body device and mobile phone are continued a journey device |
-
2011
- 2011-05-18 CN CN2011201589833U patent/CN202111488U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102946093A (en) * | 2012-11-09 | 2013-02-27 | 谢亚平 | Short-circuit protection circuit of lithium battery |
| CN102946093B (en) * | 2012-11-09 | 2015-07-08 | 谢亚平 | Short-circuit protection circuit of lithium battery |
| CN110098652A (en) * | 2019-01-18 | 2019-08-06 | 青岛海信移动通信技术股份有限公司 | A kind of mobile phone, mobile phone body device and mobile phone are continued a journey device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120111 Termination date: 20140518 |