CN201846098U - Charge and discharge protecting device and battery device - Google Patents
Charge and discharge protecting device and battery device Download PDFInfo
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- CN201846098U CN201846098U CN2010205025479U CN201020502547U CN201846098U CN 201846098 U CN201846098 U CN 201846098U CN 2010205025479 U CN2010205025479 U CN 2010205025479U CN 201020502547 U CN201020502547 U CN 201020502547U CN 201846098 U CN201846098 U CN 201846098U
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- battery
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- charging
- discharge
- protection device
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Abstract
The utility model discloses a charge and discharge protecting device for a battery pack. The battery pack comprises at least one battery unit. The charge and discharge protecting device comprises at least one protecting circuit, a first bus and a charge and discharge control circuit, wherein the at least one protecting circuit is connected to the battery unit corresponding to the at least one protecting circuit and used for detecting the battery unit for obtaining a control signal; the at least one protecting circuit transmits the control signal to the charge and discharge control circuit by the first bus; and the charge and discharge control circuit responds to the control signal and confirms whether the charge or discharge of the battery pack stops or not. The utility model also discloses a battery device with the charge and discharge protecting function. By adopting the technical scheme of the utility model, the charge and discharge protection can be effectively carried out on the battery pack or the battery device.
Description
Technical field
The utility model relates to battery technology, in particular to a kind of charging and discharging protection device and a kind of cell apparatus that possesses the charge and discharge protecting function that is used for battery pack.
Background technology
Present battery pack protection system all is to adopt a baffle to control charge and discharge protecting, and the shortcoming of this protected mode is: if 1 series connected battery is many more, be used for to the line of battery voltage sampling just manyly more, make that the layout of line is very random; 2, series connected battery is many more, and the voltage of battery pack is also just high more, so just the durable of baffle is had higher requirement; 3, series connected battery is many more, needs to adopt unified reference ground, and this required precision to voltage sample is also very high.
Therefore, a kind of new protected mode for battery set charge/discharge of demand can solve above-mentioned shortcoming, that is: 1, solve the location problem of the line that is used to detect battery; 2, the influence that can avoid using the high voltage of the battery pack of a large amount of batteries to bring; 3, can guarantee the voltage of battery is made accurate detection.
The utility model content
Technical problem to be solved in the utility model is, a kind of new protected mode for battery set charge/discharge is provided, and can solve following problem one of at least: the location problem that 1, solves the line that is used to detect battery; 2, the influence that can avoid using the high voltage of the battery pack of a large amount of batteries to bring; 3, can guarantee the voltage of battery is made accurate detection.
In view of this, the utility model discloses a kind of charging and discharging protection device that is used for battery pack, described battery pack comprises at least one battery unit, described charging and discharging protection device comprises: at least one protective circuit, be connected to and the corresponding battery unit of described at least one protective circuit, described battery unit is detected to obtain control signal; First bus, described at least one protective circuit sends to described charge-discharge control circuit by described first bus with described control signal; And described charge-discharge control circuit, in response to described control signal, determine whether to stop the charge or discharge of described battery pack.By this technical scheme, each protective circuit is monitored a battery unit, i.e. the detection of each protective circuit correspondence is less with line, and the voltage that detects is less; And by using first bus, charge-discharge control circuit can receive the control signal that each protective circuit sends effectively, so that battery pack is carried out charge and discharge protecting.
In technique scheme, preferably, described battery pack comprises a plurality of battery units that are connected in series, and the voltage of described a plurality of battery units is identical.By this technical scheme, the voltage averaged voltage of joining for less a plurality of battery units with battery pack can reduce the demand durable to the voltage of protective circuit.
In technique scheme, preferably, the battery unit in the described battery pack comprises series connection and/or a plurality of batteries that are connected in parallel.
In technique scheme, preferably, described at least one protective circuit comprises: the photoelectricity coupling module after described control signal carried out photoelectricity coupling and handle, transfers to described first bus again.By this technical scheme, needn't the control signal that produces not carried out handling commonly because of different battery units altogether, also played the effect of electrical isolation simultaneously.
In technique scheme, preferably, described photoelectricity coupling module is a TLP521 monochromatic light coupling module.
In technique scheme, preferably, described at least one protective circuit comprises: voltage detecting circuit, be connected to described battery unit, and detect the voltage of the battery of described battery unit; The signal generation unit is connected to described voltage detecting circuit, generates control signal according to described voltage.By this technical scheme, guarantee when having the electric voltage exception of battery, in time to stop the charge or discharge of described battery pack, with the protection battery pack.
In technique scheme, preferably, described voltage is higher than when being scheduled to peak, and described charge-discharge control circuit disconnects charge circuit according to described control signal, stops described batteries charging.
In technique scheme, preferably, when described battery was the 3.2V lithium battery, described predetermined peak was 3.64V; When described battery was the 3.7V lithium battery, described predetermined peak was 4.25V.
In technique scheme, preferably, when described voltage was lower than predetermined lowest value, described charge-discharge control circuit disconnected discharge loop according to described control signal, made described battery pack stop discharge.
In technique scheme, preferably, when described battery was the 3.2V lithium battery, described predetermined lowest value was 2.3V; When described battery was the 3.7V lithium battery, described predetermined lowest value was 2.7V.
In technique scheme, preferably, described at least one protective circuit comprises: temperature sensing circuit, be connected to described battery unit, and detect the temperature of the battery of described battery unit; The signal generation unit is connected to described temperature sensing circuit, generates described control signal according to described temperature.By this technical scheme, guarantee when having the temperature anomaly of battery, in time to stop the discharge of described battery pack, with the protection battery pack.
In technique scheme, preferably, when described temperature was higher than predetermined value, described charge-discharge control circuit disconnected discharge loop according to described control signal, made described battery pack stop discharge.
In technique scheme, preferably, described charge-discharge control circuit also sends power supply signal to described at least one protective circuit, to start or stop the detection of described at least one protective circuit to described battery unit.By this technical scheme, make under the situation of not using battery pack, stop to detect to save the electric energy of battery pack.
In technique scheme; preferably; described charging and discharging protection device also comprises: second bus, be connected between described at least one protective circuit and the described charge-discharge control circuit, and described power supply signal is sent to described at least one protective circuit by described second bus.
The invention also discloses a kind of cell apparatus that possesses the charge and discharge protecting function, comprising: at least one battery unit; Charging and discharging protection device in the technique scheme is connected to described battery unit.
Pass through technique scheme; can realize a kind of charging and discharging protection device and a kind of cell apparatus that possesses the charge and discharge protecting function that is used for battery pack; realize the charge and discharge protecting of battery pack or cell apparatus effectively by bus, can save the electric energy of battery pack or cell apparatus simultaneously effectively.
Description of drawings
Fig. 1 is the block diagram that is used for the charging and discharging protection device of battery pack according to of the present utility model;
Fig. 2 is the block diagram that possesses the cell apparatus of charge and discharge protecting function according to of the present utility model;
Fig. 3 is the schematic diagram according to the battery unit in the cell apparatus that possesses the charge and discharge protecting function of an embodiment of the present utility model;
Fig. 4 is the schematic diagram according to the cell apparatus that possesses the charge and discharge protecting function of an embodiment of the present utility model.
Embodiment
In order more to be expressly understood above-mentioned purpose of the present utility model, feature and advantage, the utility model is further described in detail below in conjunction with the drawings and specific embodiments.
A lot of details have been set forth in the following description so that fully understand the utility model, but, the utility model can also adopt other to be different from other modes described here and implement, and therefore, the utility model is not limited to the restriction of following public specific embodiment.
Fig. 1 is the block diagram that is used for the charging and discharging protection device of battery pack according to of the present utility model.
As shown in Figure 1, the utility model provides a kind of charging and discharging protection device 100 that is used for battery pack, described battery pack comprises at least one battery unit (not shown), described charging and discharging protection device 100 comprises: at least one protective circuit 102, be connected to the battery unit corresponding, described battery unit is detected to obtain control signal with described at least one protective circuit 102; First bus 104, described at least one protective circuit 102 sends to the described control loop 106 that discharges and recharges by described first bus 104 with described control signal; And the described control loop 106 that discharges and recharges, in response to described control signal, determine whether to stop the charge or discharge of described battery pack.By this technical scheme, each protective circuit is monitored a battery unit, i.e. the detection of each protective circuit correspondence is less with line, and the voltage that detects is less; And by using first bus, charge-discharge control circuit can receive the control signal that each protective circuit sends effectively, so that battery pack is carried out charge and discharge protecting.
In technique scheme, described battery pack comprises a plurality of battery units that are connected in series, and the voltage of described a plurality of battery units is identical.By this technical scheme, the voltage averaged voltage of joining for less a plurality of battery units with battery pack can reduce the demand durable to the voltage of protective circuit.
In technique scheme, the battery unit in the described battery pack comprises series connection and/or a plurality of batteries that are connected in parallel.
In technique scheme, described at least one protective circuit 102 comprises: the photoelectricity coupling module after described control signal carried out photoelectricity coupling and handle, transfers to described first bus 104 again.By this technical scheme, needn't the control signal that produces not carried out handling commonly because of different battery units altogether, also played the effect of electrical isolation simultaneously.
In technique scheme, described at least one protective circuit 102 comprises: voltage detecting circuit, be connected to described battery unit, and detect the voltage of the battery of described battery unit; The signal generation unit is connected to described voltage detecting circuit, generates control signal according to described voltage.By this technical scheme, guarantee when having the electric voltage exception of battery, in time to stop the charge or discharge of described battery pack, with the protection battery pack.
In technique scheme, described voltage is higher than when being scheduled to peak, and the described control loop 106 that discharges and recharges disconnects charge circuit according to described control signal, stops described batteries charging.
In technique scheme, when described battery was the 3.2V lithium battery, described predetermined peak was 3.64V; When described battery was the 3.7V lithium battery, described predetermined peak was 4.25V.
In technique scheme, when described voltage was lower than predetermined lowest value, the described control loop 106 that discharges and recharges disconnected discharge loop according to described control signal, makes described battery pack stop discharge.
In technique scheme, when described battery was the 3.2V lithium battery, described predetermined lowest value was 2.3V; When described battery was the 3.7V lithium battery, described predetermined lowest value was 2.7V.
In technique scheme, described at least one protective circuit 102 comprises: temperature sensing circuit, be connected to described battery unit, and detect the temperature of the battery of described battery unit; The signal generation unit is connected to described temperature sensing circuit, generates described control signal according to described temperature.By this technical scheme, guarantee when having the temperature anomaly of battery, in time to stop the discharge of described battery pack, with the protection battery pack.
In technique scheme, when described temperature was higher than predetermined value, the described control loop 106 that discharges and recharges disconnected discharge loop according to described control signal, makes described battery pack stop discharge.
In technique scheme, the described control loop 106 that discharges and recharges also sends power supply signal to described at least one protective circuit 102, to start or stop the detection of 102 pairs of described battery units of described at least one protective circuit.By this technical scheme, make under the situation of not using battery pack, stop to detect to save the electric energy of battery pack.
In technique scheme; described charging and discharging protection device also comprises: second bus (shown in Figure 1); be connected between described at least one protective circuit 102 and the described charge-discharge control circuit 106, described power supply signal is sent to described at least one protective circuit 102 by described second bus.
Fig. 2 is the block diagram that possesses the cell apparatus of charge and discharge protecting function according to of the present utility model.
As shown in Figure 2, the utility model also provides a kind of cell apparatus that possesses the charge and discharge protecting function, comprising: at least one battery unit 202; Charging and discharging protection device 204 in the technique scheme is connected to described battery unit.
Fig. 3 is the schematic diagram according to the battery unit in the cell apparatus that possesses the charge and discharge protecting function of an embodiment of the present utility model.
As shown in Figure 3, be the battery unit in the cell apparatus that possesses the charge and discharge protecting function 300.This battery unit 300 is made up of 4 strings 10,40 batteries also totally, and the voltage of each battery is 3V, so the voltage of this battery unit 300 is 3*4=12V.Protective circuit 302 detects the voltage of each battery in the battery unit 300, and the generation control signal is transferred to charge-discharge control circuit 304.Can adopt the photoelectricity coupling module that control signal is handled in the protective circuit 302.Can use TLP521 monochromatic light coupling module herein, when producing control signal in the protective circuit 302, the light-emitting diode conducting in the optocoupler module is luminous, triggers the transistor turns of back, with to charge-discharge control circuit 304 transfer control signal.In technique scheme, preferably, described photoelectricity coupling module is a TLP521 monochromatic light coupling module.
Charge-discharge control circuit 304 can be according to control signal, be switched on or switched off the charging and discharging circuit at cell apparatus place, for example, be higher than certain value (for the 3.2V lithium battery at the voltage that detects, this value is 3.64V, for the 3.7V lithium battery, this value is 4.25V) time, 304 of charge-discharge control circuits can disconnect charge circuit, stop to be the cell apparatus charging, be lower than certain value (for the 3.2V lithium battery at the voltage that detects, this value is for 2.3V, and for the 3.7V lithium battery, this value is 2.7V) time, 304 of charge-discharge control circuits can disconnect discharge loop, make cell apparatus stop to power for load.Simultaneously, charge-discharge control circuit 304 can send power supply signal to protective circuit 302, makes to stop protective circuit 302 and to detect when cell apparatus is not used, and can save the electric energy of cell apparatus effectively.
Equalizing circuit in parallel among Fig. 3 is used for the balanced capacity of a plurality of batteries of relation in parallel each other.
Fig. 4 is the schematic diagram according to the cell apparatus that possesses the charge and discharge protecting function of an embodiment of the present utility model.
As shown in Figure 4, be the work schematic diagram of the cell apparatus 400 that possesses the charge and discharge protecting function.The battery unit that cell apparatus 400 is 12V by four voltages is composed in series, so the voltage of cell apparatus 400 is 12*4=48V.The all corresponding protective circuit of each battery unit is to detect the cell voltage in the battery unit.Four protective circuits are sent to charge-discharge control circuit 304 by first bus 402 with control signal, and charge-discharge control circuit 304 determines to connect or disconnect the charging and discharging circuit at cell apparatus 400 places according to control signal.By using first bus; and use corresponding protective circuit to detect to each battery unit; make with respect to existing protective circuit; the quantity of the detection usefulness line of corresponding protective circuit still less; easy arrangement more; simultaneously its voltage that need bear is littler, and just 1/4th of the voltage of entire cell device 400.
Charge-discharge control circuit 304 also sends power supply signal to each protective circuit by second bus 404, can when cell apparatus 400 does not carry out work protective circuit be quit work, and battery unit is not detected, to save the electric energy of cell apparatus 400.
According to the technical solution of the utility model, can realize a kind of charging and discharging protection device and a kind of cell apparatus that possesses the charge and discharge protecting function that is used for battery pack, can carry out charge and discharge protecting to battery pack or cell apparatus effectively, and the electric energy in saving battery pack or the cell apparatus, and can solve shortcoming in the common resist technology, that is: 1, solve the location problem of the line that is used to detect battery; 2, the influence that can avoid using the high voltage of the battery pack of a large amount of batteries to bring; 3, can guarantee the voltage of battery is made accurate detection.
The above is a preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (14)
1. a charging and discharging protection device is used for battery pack, and described battery pack comprises at least one battery unit, it is characterized in that, described charging and discharging protection device comprises:
At least one protective circuit is connected to and the corresponding battery unit of described at least one protective circuit, and described battery unit is detected to obtain control signal;
First bus, described at least one protective circuit sends to described charge-discharge control circuit by described first bus with described control signal; And
Described charge-discharge control circuit in response to described control signal, determines whether to stop the charge or discharge of described battery pack.
2. charging and discharging protection device according to claim 1 is characterized in that, described battery pack comprises a plurality of battery units that are connected in series, and the voltage of described a plurality of battery units is identical.
3. charging and discharging protection device according to claim 2 is characterized in that, the battery unit in the described battery pack comprises series connection and/or a plurality of batteries that are connected in parallel.
4. according to each described charging and discharging protection device in the claim 1 to 3, it is characterized in that described at least one protective circuit comprises:
The photoelectricity coupling module after described control signal carried out photoelectricity coupling and handle, transfers to described first bus again.
5. according to each described charging and discharging protection device in the claim 1 to 3, it is characterized in that described at least one protective circuit comprises:
Voltage detecting circuit is connected to described battery unit, detects the voltage of the battery of described battery unit;
The signal generation unit is connected to described voltage detecting circuit, generates control signal according to described voltage.
6. charging and discharging protection device according to claim 5 is characterized in that, described voltage is higher than when being scheduled to peak, and described charge-discharge control circuit disconnects charge circuit according to described control signal, stops described batteries charging.
7. charging and discharging protection device according to claim 6 is characterized in that, when described battery was the 3.2V lithium battery, described predetermined peak was 3.64V;
When described battery was the 3.7V lithium battery, described predetermined peak was 4.25V.
8. charging and discharging protection device according to claim 5 is characterized in that, when described voltage was lower than predetermined lowest value, described charge-discharge control circuit disconnected discharge loop according to described control signal, makes described battery pack stop discharge.
9. charging and discharging protection device according to claim 8 is characterized in that, when described battery was the 3.2V lithium battery, described predetermined lowest value was 2.3V;
When described battery was the 3.7V lithium battery, described predetermined lowest value was 2.7V.
10. according to each described charging and discharging protection device in the claim 1 to 3, it is characterized in that described at least one protective circuit comprises:
Temperature sensing circuit is connected to described battery unit, detects the temperature of the battery of described battery unit;
The signal generation unit is connected to described temperature sensing circuit, generates described control signal according to described temperature.
11. charging and discharging protection device according to claim 10 is characterized in that, when described temperature was higher than predetermined value, described charge-discharge control circuit disconnected discharge loop according to described control signal, made described battery pack stop discharge.
12. according to each described charging and discharging protection device in the claim 1 to 3; it is characterized in that; described charge-discharge control circuit also sends power supply signal to described at least one protective circuit, to start or stop the detection of described at least one protective circuit to described battery unit.
13. charging and discharging protection device according to claim 12 is characterized in that, described charging and discharging protection device also comprises:
Second bus is connected between described at least one protective circuit and the described charge-discharge control circuit, and described power supply signal is sent to described at least one protective circuit by described second bus.
14. a cell apparatus possesses the charge and discharge protecting function, it is characterized in that, comprising:
At least one battery unit;
Each described charging and discharging protection device is connected to described battery unit in the claim 1 to 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205025479U CN201846098U (en) | 2010-08-24 | 2010-08-24 | Charge and discharge protecting device and battery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205025479U CN201846098U (en) | 2010-08-24 | 2010-08-24 | Charge and discharge protecting device and battery device |
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| Publication Number | Publication Date |
|---|---|
| CN201846098U true CN201846098U (en) | 2011-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010205025479U Expired - Lifetime CN201846098U (en) | 2010-08-24 | 2010-08-24 | Charge and discharge protecting device and battery device |
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| CN (1) | CN201846098U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101924351A (en) * | 2010-08-24 | 2010-12-22 | 倪捷 | Charging and discharging protection device and battery device |
| CN104467050A (en) * | 2013-09-23 | 2015-03-25 | 国家电网公司 | Charging and discharging control method and device for storage battery |
| CN105640510A (en) * | 2016-03-23 | 2016-06-08 | 王俊 | Electronic thermometer and body temperature measuring system |
-
2010
- 2010-08-24 CN CN2010205025479U patent/CN201846098U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101924351A (en) * | 2010-08-24 | 2010-12-22 | 倪捷 | Charging and discharging protection device and battery device |
| CN101924351B (en) * | 2010-08-24 | 2013-04-10 | 绿源电动车(山东)有限公司 | Charging and discharging protection device and battery device |
| CN104467050A (en) * | 2013-09-23 | 2015-03-25 | 国家电网公司 | Charging and discharging control method and device for storage battery |
| CN105640510A (en) * | 2016-03-23 | 2016-06-08 | 王俊 | Electronic thermometer and body temperature measuring system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110525 Effective date of abandoning: 20130410 |
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| RGAV | Abandon patent right to avoid regrant |