CN201011704Y - High power electricity discharge protecting device for power lithium battery - Google Patents
High power electricity discharge protecting device for power lithium battery Download PDFInfo
- Publication number
- CN201011704Y CN201011704Y CNU2007200336446U CN200720033644U CN201011704Y CN 201011704 Y CN201011704 Y CN 201011704Y CN U2007200336446 U CNU2007200336446 U CN U2007200336446U CN 200720033644 U CN200720033644 U CN 200720033644U CN 201011704 Y CN201011704 Y CN 201011704Y
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- lithium battery
- double layer
- electric double
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Abstract
The utility model discloses a protecting device of high rate discharging of a dynamic lithium battery. The protecting device comprises a circuit board with a circuit consisting of a lithium battery, an electronic fuse, a composite electric relay, an overtime capacitor, a current limiting capacitor and electric double layer capacitors. The composite electric relay consists of a current coil, a voltage keeping coil and a frequent off touch point. The electronic fuse is connected between the anode of an accumulator and the current coil. The anode of overtime capacitor is connected with the voltage keeping coil and the cathode is connected with the anode of the electric double layer capacitors, the cathodes of which are respectively connected with the cathode of the accumulator and an electric motor. The one terminal of the current limiting capacitor is respectively connected with the current coil and the voltage keeping coil, and the other end is respectively connected with the anode of the electric double layer capacitors and a speeding adjusting device. The frequent off touch point is connected in parallel with the current limiting resistor. The utility model with simple structure not only can improve the discharging rate of the lithium battery, but also can prolong service life of the lithium battery.
Description
Technical field
The utility model relates to technical field of lithium batteries, specifically, relates to a kind of dynamic lithium battery high-multiplying power discharge protective device.
Background technology
Enhancing along with environmental consciousness; the maturation of power lithium battery pool technology; dynamic lithium battery will replace lead-acid battery; the specific capacity of dynamic lithium battery, specific energy, weight/power ratio have all substantially exceeded lead-acid battery; it is poor that unique deficiency remains the overcurrent high-rate discharge capacity being badly in need of solving; existing for this reason domestic and international technology has all adopted complex circuit, expensive circuit overcurrent protection, and failure rate is higher in using.Because big electric current produces the temperature rise heating of battery electrolyte, causes the lithium battery antioxygenic property poor, positive electrode is born the embedding of big quantity lithium ion and takes off the unfavorable factor of embedding, cause lithium ion battery normally to charge and discharge circulation and shorten greatly.
Summary of the invention
The purpose of this utility model provides a kind of simple in structure, can not only improve the discharge-rate of lithium battery, and can improve the lithium battery dynamic lithium battery high-multiplying power discharge protective device in useful life.
The technical scheme that realizes above-mentioned purpose is: a kind of dynamic lithium battery high-multiplying power discharge protective device; comprise wiring board; circuit on the wiring board is by lithium battery; electrical fuse; compound relay; delay capacitor; current-limiting resistance and electric double layer capacitance are formed; compound relay is by current coil; voltage hold-in winding and normally-closed contact are formed; electrical fuse is connected between battery positive voltage and the current coil; the positive pole of delay capacitor is connected with the voltage hold-in winding; negative pole is connected with the positive pole of electric double layer capacitance; the negative pole of electric double layer capacitance be connected with battery terminal negative and motor respectively; one end of current-limiting resistance is connected with the voltage hold-in winding with current coil respectively; the other end of current-limiting resistance is connected with the positive pole and the speed regulator of electric double layer capacitance respectively, and normally-closed contact is in parallel with current-limiting resistance.
After adopting technique scheme, electrical fuse, current mode compound relay in the dynamic lithium battery output circuit, have been connected, current-limiting resistance output in parallel with electric double layer capacitance again.Utilize compound relay to be connected in the circuit, setting the action attract current is the rated capacity 1C of dynamic lithium battery, in compound relay, be provided with the voltage hold-in winding, external delay capacitor, as long as electric current is greater than setting electric current on current coil, the voltage hold-in winding will keep adhesive and time-delay, and electric current is less than setting electric current to the current coil, and compound relay just discharges and restores electricity.Utilize current-limiting resistance, when compound relay surpassed setting electric current action adhesive, when normally-closed contact disconnected, this current-limiting resistance automatic string was connected on step-down current limliting in the output circuit.Utilize the electric double layer capacitance charging rapidly, charge and discharge circulation life reaches more than 100,000 times, and is very bigger than pulse power, has superpower charged energy storage to improve high-rate discharge capacity.Characteristics of the present utility model are double electric layer capacitor to be seen as the output (seeing storage battery as) of high-multiplying power discharge, and compound relay is the charger of double electric layer capacitor, and dynamic lithium battery is seen as the energy that charging replenishes to electric double layer capacitance.Stablize under the constant current so lithium battery always works in, and electric double layer capacitance is operated in the big current work state that satisfies in the continuous energy changing of line load, compound relay is regulated the protection dynamic lithium battery.
Description of drawings
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
Below in conjunction with drawings and Examples the utility model is described in further detail.
As shown in Figure 1; a kind of dynamic lithium battery high-multiplying power discharge protective device; comprise wiring board 1; circuit on the wiring board 1 is by lithium battery E; electrical fuse PTC; compound relay J; delay capacitor C1; current-limiting resistance R and electric double layer capacitance C2 form; compound relay J is by current coil L1; voltage hold-in winding L2 and normally-closed contact J1-1 form; electrical fuse PTC is connected between battery positive voltage and the current coil L1; the positive pole of delay capacitor C1 is connected with voltage hold-in winding L2; negative pole is connected with the positive pole of electric double layer capacitance C2; the negative pole of electric double layer capacitance C2 be connected with battery terminal negative and motor M respectively; the end of current-limiting resistance R is connected with voltage hold-in winding L2 with current coil L1 respectively; the other end of current-limiting resistance R is connected with positive pole and the speed regulator TS of electric double layer capacitance C2 respectively, and normally-closed contact J1-1 is in parallel with current-limiting resistance R.The electric current of compound relay customization normally-closed contact J1-1 is the 2C of power lithium battery tankage discharging current, the operating current of current coil L1 is the 1C of dynamic lithium battery discharging current, the voltage of voltage hold-in winding L2 is designed between 12V～18V, delay capacitor C 1 selects the electrochemical capacitor of 470uf～1000uf for use, current-limiting resistance is selected high-power cement resistor or aluminum hull resistance for use, and power and resistance are below the dynamic lithium battery discharging current 1C with the charging current of controlling electric double layer capacitance C2.The voltage of electric double layer capacitance, capacity can be chosen according to the rated voltage capacity of corresponding dynamic lithium battery, as: the dynamic lithium battery of 37V, 10Ah, can select 42V, 1.6F～2.5F for use, discharging current is between 100A～150A.
Electrical fuse PTC is a resettable fuse.The protective current of resettable fuse is set at 2 times of electric currents of dynamic lithium battery rated capacity, and ten thousand fusing of q-percentile life is not worked under the general normal condition in circuit from recovering.
In the present embodiment, the electric current of dynamic lithium battery E output is through anodal, electrical fuse PTC, and the current coil L1 among the compound relay J, normally-closed contact J1-1 are to positive pole, the negative pole of electric double layer capacitance C, and the loop is to the negative pole of dynamic lithium battery.In the circuital current loop; electric double layer capacitance C and dynamic lithium battery E equipotential; or loop current is less than compound relay J protection operating current; compound relay J is failure to actuate; not adhesive; when electric double layer capacitance charging current in the circuit is protected operating current greater than compound relay J; current coil L1-1 produces magnetic force adhesive normally-closed contact J1-1 and disconnects; by current-limiting resistance R step-down current-limiting protection; simultaneously potential winding L2 keeps adhesive and by delay capacitor C1 time-delay, has only when coil L1 current value compound relay J when setting the protection operating current just can discharge and connects normally-closed contact J1-1.
When speed regulator TS in the circuit works; power motor M startup moment elder generation is turned round for big current start by electric double layer capacitance C2; dynamic lithium battery E can replenish electric double layer capacitance C2 energy by little electric current simultaneously; when start-up time long (above 30 seconds); load is overweight; during electric double layer capacitance C2 energy shortage, dynamic lithium battery E normal power supply, only otherwise exceeding compound relay J sets protective current 1C.When exceeding setting protective current 1C; compound relay J adhesive disconnects normally-closed contact J1-1; by current-limiting resistance R protection current limliting; because current-limiting resistance R is in parallel with the normally-closed contact J1-1 among the compound relay J; also protected simultaneously normally-closed contact J1-1; prevent its meeting overcurrent or ablation, prolonged the useful life of normally-closed contact J1-1.
The electrical fuse PTC that connects in the circuit, having only just can fuse when electric current in the circuit exceeds protective current 2C holds, and has played the effect of duplicate protection in the circuit, and can self-healing recovery (ten thousand life-spans).
In practice, all assembling devices all are failure to actuate in normal range (NR) in the circuit, also do not consume energy, so life-span length, reliable operation, cheap is unusual practical and effective protective circuit.And circuit structure is simple, and is very practical.
Claims (3)
1. dynamic lithium battery high-multiplying power discharge protective device; comprise wiring board (1); it is characterized in that: the circuit on the wiring board (1) is by lithium battery (E); electrical fuse (PTC); compound relay (J); delay capacitor (C1); current-limiting resistance (R) and electric double layer capacitance (C2) are formed; compound relay (J) is by current coil (L1); voltage hold-in winding (L2) and normally-closed contact (J1-1) are formed; electrical fuse (PTC) is connected between battery positive voltage and the current coil (L1); the positive pole of delay capacitor (C1) is connected with voltage hold-in winding (L2); negative pole is connected with the positive pole of electric double layer capacitance (C2); the negative pole of electric double layer capacitance (C2) be connected with battery terminal negative and motor (M) respectively; one end of current-limiting resistance (R) is connected with voltage hold-in winding (L2) with current coil (L1) respectively; the other end of current-limiting resistance (R) is connected with the positive pole and the speed regulator (TS) of electric double layer capacitance (C2) respectively, and normally-closed contact (J1-1) is in parallel with current-limiting resistance (R).
2. dynamic lithium battery high-multiplying power discharge protective device according to claim 1 is characterized in that: described electrical fuse (PTC) is a resettable fuse.
3. dynamic lithium battery high-multiplying power discharge protective device according to claim 1 and 2 is characterized in that: described delay capacitor (C2) is an electrochemical capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200336446U CN201011704Y (en) | 2007-01-19 | 2007-01-19 | High power electricity discharge protecting device for power lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200336446U CN201011704Y (en) | 2007-01-19 | 2007-01-19 | High power electricity discharge protecting device for power lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201011704Y true CN201011704Y (en) | 2008-01-23 |
Family
ID=39046648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200336446U Expired - Lifetime CN201011704Y (en) | 2007-01-19 | 2007-01-19 | High power electricity discharge protecting device for power lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201011704Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102222883A (en) * | 2011-06-28 | 2011-10-19 | 上海广为美线电源电器有限公司 | Automatic over-current and short-circuit protecting and restoring circuit of jump start power |
| CN101643054B (en) * | 2009-08-30 | 2011-12-14 | 奇瑞汽车股份有限公司 | Management system of lithium battery for automobile power |
| CN105048416A (en) * | 2015-07-20 | 2015-11-11 | 惠州Tcl移动通信有限公司 | Self-protection circuit and method of battery |
| CN113036870A (en) * | 2021-03-23 | 2021-06-25 | 潍坊市速远动力科技有限公司 | Lithium battery protection device and method for realizing large-current discharge |
-
2007
- 2007-01-19 CN CNU2007200336446U patent/CN201011704Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101643054B (en) * | 2009-08-30 | 2011-12-14 | 奇瑞汽车股份有限公司 | Management system of lithium battery for automobile power |
| CN102222883A (en) * | 2011-06-28 | 2011-10-19 | 上海广为美线电源电器有限公司 | Automatic over-current and short-circuit protecting and restoring circuit of jump start power |
| CN105048416A (en) * | 2015-07-20 | 2015-11-11 | 惠州Tcl移动通信有限公司 | Self-protection circuit and method of battery |
| CN113036870A (en) * | 2021-03-23 | 2021-06-25 | 潍坊市速远动力科技有限公司 | Lithium battery protection device and method for realizing large-current discharge |
| CN113036870B (en) * | 2021-03-23 | 2022-12-20 | 潍坊市速远动力科技有限公司 | Lithium battery protection device and method for realizing large-current discharge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20130507 Granted publication date: 20080123 |
|
| RINS | Preservation of patent right or utility model and its discharge | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20131107 Granted publication date: 20080123 |
|
| RINS | Preservation of patent right or utility model and its discharge | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20140403 Granted publication date: 20080123 |
|
| RINS | Preservation of patent right or utility model and its discharge | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20150403 Granted publication date: 20080123 |
|
| RINS | Preservation of patent right or utility model and its discharge | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080123 |
|
| EXPY | Termination of patent right or utility model |