CN2638254Y - Battery protector - Google Patents
Battery protector Download PDFInfo
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- CN2638254Y CN2638254Y CN 03275858 CN03275858U CN2638254Y CN 2638254 Y CN2638254 Y CN 2638254Y CN 03275858 CN03275858 CN 03275858 CN 03275858 U CN03275858 U CN 03275858U CN 2638254 Y CN2638254 Y CN 2638254Y
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
A battery protector mainly extends the lithium battery group used for high voltage through the lithium battery detection IC (battery protection IC) which is frequently used for the consumptive electronic products; a photo-coupler is utilized to solve the trouble that the voltage level are different when a plurality of groups of batteries are connected in series, and a current detection point is appropriately selected or an original IC internal circuit is utilized so as to establish a safe and stable secondary control circuit, thus avoiding the repetitious oscillation between the electronic switches, thereby achieving the purpose of prolonging the using life of the electronic switch and the battery group.
Description
Technical field
The utility model is about a kind of battery protecting apparatus, is meant a kind of battery protecting apparatus of saving cost and prolonging electronic switch and battery pack purpose in useful life that reaches especially.
Background technology
The lithium battery of the many work eyes of battery protecting circuit (IC) commonly used in portable computer (Notebook), because the restriction of IC processing procedure on proof voltage, cause existing battery protecting circuit (Seiko, Atmel ...) be defined in the use (16-20V) of four series lithium battery groups more; Yet, in the application of electric motor car, because consider the problem of energy conversion efficiency, certainly will use more battery serial connection, higher working voltage can be provided, to reduce possible switching losses and transmission loss, move but so be connected in series, will produce the transfer of voltage level and the problem of the synchronous breech lock of protective circuit; Otherwise; the then essential separate analogue logical circuit that uses complexity; reaching approaching defencive function, yet, so complicated design; often because of the accuracy of analog circuit and the reliability of logic; and directly effect is protected in influence, even, because the stability of protection breech lock; and cause the switch reciprocating vibration, cause the damage of circuit and battery.
Battery management system commonly used has mainly comprised overdischarge stream protective device, overcharged voltage protective device and single undervoltage protection; The use of mains switch and the detecting of circulating current in these application apparatus, have been comprised naturally.To explain at the disappearance of battery management system commonly used in the following description:
1. the use of mains switch: the conventional power source switch is as electronic switch commonly used usually with N-MOSFET, though this N-MOSFET has characteristics such as low conducting internal resistance, high pass efficient and low cost, yet, the higher grid potential (VGS﹠amp of the essential use of N-MOSFET; VGD＞＞Vth), the passage (Channel) that can guarantee conducting is in Low ESR, thus, it must use booster circuit (Booster Converter) that higher operating voltage is provided, but under the use of many Battery pack serial connections, then essential again use withstand voltage higher N-MOSFET (VDSS), and then lose advantage cheaply; If use mechanical relay, no doubt exempted bothering of high voltage, but the useful life and the expensive problem of making us perplexing that is still of general relay.
2. the serial connection problem of many Battery packs group: the conventional batteries protective circuit is shown eye in the employed four string battery pack of portable computer more; as for the application of other consumption electronic products or industrial quarters, can only use operational amplifier (operational amplifier) and digital circuit (Logics) to reach defencive function partly.But thus, will give up a large amount of special worker's integrated circuits (Dedicated SingleIC) of fine quality, and, make it only use the part function of original element with the mixing independent component (Discrete Parts) of large amount of complex.In addition, because original integrated circuit is only considered the use of four series lithium batteries, cause the input of original detecting voltage and the output of controlling signal, its proof voltage is all only between 16-20V, if be used for the higher voltage batteries group by force, tend to cause the problem that can not expect, or even the life problems that bothers most.And the overcurrent detecting of this adhesive integrated circuit typically uses the electric current pressure drop that a little resistance (Shunt) produced of flowing through, with the detecting mechanism as protection.But in the application of many battery pack, after the protection starting, the first cut-off current of this electronic switch meeting; it is zero that the detecting voltage drop is replied, and before real fault is got rid of, opens electronic switch once again; so, will definitely cause protective circuit to lose efficacy, and cause the damage of electronic switch or battery pack.
This shows that above-mentioned article commonly used still have many disappearances, real non-one kindhearted design, and demand urgently being improved.
The utility model content
It is a kind of when utilizing current potential to adjust circuit to solve many Battery packs serial connections that the purpose of this utility model is to provide, the battery protecting apparatus of the different problems of voltage level.
Of the present utility model time a purpose is to provide a kind of suitable selection overcurrent detecting point or utilizes original IC internal circuit, with the secondary control circuit of construction safety and stability, and then the battery protecting apparatus of avoiding contactor and lithium battery to damage.
Another purpose of the present utility model is to provide a kind of battery protecting apparatus that prolongs electronic switch and lithium battery useful life.
For achieving the above object, a kind of battery protecting apparatus that the utility model provides comprises:
The battery pack of one serial connection, this battery pack can provide power supply to load end, for the load normal operation;
One battery detecting device, it is situated between mutually with each battery and connects, and to detect the power supply consume situation of each battery, consumes when finishing if detect battery electric power, then sends the message of changing battery;
It is characterized in that:
One P type metal-oxide half field effect transistor electronic switch, this electronic switch is arranged between battery pack and load, with detecting point as overcurrent, when in case the detecting point detects abnormal voltage, this electronic switch promptly cuts off current circuit really the time, after fault was got rid of, side's meeting conducting can be charged battery pack again;
One negative pressure protective circuit, it is situated between mutually with battery pack and battery detecting device and connects, but makes the highest voltage difference in its restricting circuits, is higher than maximum proof voltage in the circuit to avoid detecting point voltage in the circuit;
One electric potential transfer circuit, it is situated between mutually with battery detecting device and electronic switch and connects, and makes its operating voltage that can adjust each service area, to solve the different problem of each service area voltage.
Described battery protecting apparatus, wherein this battery pack can be lithium battery, chargeable re-using when its power supply is exhausted, and this battery series quantity do not limit, and makes it can provide big voltage to load end.
Described battery protecting apparatus, wherein this electric potential transfer circuit can be an optical coupler.Or
A kind of battery protecting apparatus that the utility model provides comprises:
The battery pack of one serial connection, this battery pack can provide power supply to load end, for the load normal operation;
One battery detecting device, it is situated between mutually with each battery and connects, and to detect the power supply consume situation of each battery, consumes when finishing if detect battery electric power, then sends the message of changing battery;
It is characterized in that:
The electronic switch of one N type metal-oxide half field effect transistor, this electronic switch is arranged at the middle section of battery pack, but makes keeping of its protective circuit Lower Half abnormal signal, until the appearance of charging procedure or involution signal;
One negative pressure protective circuit, this negative pressure protective circuit is situated between mutually with battery pack and battery detecting device and connects, and receive the internal latch signal that electronic switch transmits, but make the highest voltage difference in its restricting circuits, be higher than maximum proof voltage to avoid the detecting point voltage in the circuit;
One electric potential transfer circuit, it is situated between mutually with battery detecting device and electronic switch and connects, and makes its operating voltage that can adjust each service area, to solve the different problem of each service area voltage.
Described battery protecting apparatus, wherein this electronic switch can use the specification of low-voltage.
Described battery protecting apparatus can be provided with an electronic switch on wherein per four serial connection batteries, makes the series quantity of this battery unrestricted.Or
A kind of battery protecting apparatus that the utility model provides comprises:
The battery pack of one serial connection, this battery pack can provide power supply to load end, for the load normal operation;
One battery detecting device, it is situated between mutually with each battery and electric potential transfer circuit and connects, and to detect the power supply consume situation of each battery, reaches transmission signal to electric potential transfer circuit;
It is characterized in that:
The electronic switch of one N type metal-oxide half field effect transistor, this electronic switch is arranged at grounded circuit, makes its service position that is in minimum voltage, causes damage to avoid the vibration of electronic switch repetitiousness;
One latch circuit, it is situated between mutually with electronic switch and connects, and makes electronic switch can receive the correct signal of closing;
One latch protection circuit, it is situated between mutually with electronic switch and latch circuit and connects, and is mainly the protection latch circuit, makes latch circuit can keep normal work;
One negative pressure protective circuit, it is situated between mutually with battery pack and battery detecting device and connects, but makes the highest voltage difference in its restricting circuits, is higher than the proof voltage problem of setting with the detecting point voltage in the solution circuit;
One electric potential transfer circuit, it is situated between mutually with battery detecting device and latch circuit and connects, and makes its operating voltage that can adjust each service area, to solve the different problem of each service area voltage.
Described battery protecting apparatus, wherein this battery can be lithium battery, chargeable re-using when making its power drain, and this battery series quantity do not limit, and makes in its product that can be applicable to big voltage.
Description of drawings
See also the detailed description and the accompanying drawing thereof of following relevant the utility model one preferred embodiment, can further understand technology contents of the present utility model and purpose effect thereof; The accompanying drawing of relevant this embodiment is:
Figure 1A is that first of the utility model battery protecting apparatus is implemented calcspar;
Figure 1B is that first of the utility model battery protecting apparatus is implemented circuit diagram;
Fig. 2 A is that second of the utility model battery protecting apparatus is implemented calcspar;
Fig. 2 B is that second of the utility model battery protecting apparatus is implemented circuit diagram;
Fig. 3 A is that second of the utility model battery protecting apparatus is implemented calcspar; And
Fig. 3 B is that second of the utility model battery protecting apparatus is implemented circuit diagram.
Embodiment
See also shown in Figure 1A, the B, implement calcspar and circuit diagram, mainly comprise for first of battery protecting apparatus provided by the utility model:
The battery pack 1 of one serial connection, this battery pack 1 can be lithium battery, makes it that charging function and can provide power supply to load end 2 is provided, and for load 2 normal operations, and the series quantity of this battery pack 1 do not limit, and makes in its product that can be applicable to big voltage:
One battery detecting device 3, it is situated between mutually with the battery of each battery pack 1 and connects, and to detect the power supply consume situation of each battery, consumes when finishing if detect battery electric power, then sends the message of changing battery;
One electronic switch 4, this electronic switch 4 is a P type metal-oxide half field effect transistor (P-MOSFET), this electronic switch 4 is arranged at 2 of battery pack 1 and loads, with detecting point as overcurrent, in case when detecting point detected abnormal voltage, this electronic switch 4 promptly cut off current circuit really the time, after the fault eliminating, side's meeting conducting can be charged battery pack 1 again;
One negative pressure protective circuit 5, this negative pressure protective circuit 5 are situated between mutually with battery pack 1 and battery detecting device 3 and connect, but make the highest voltage difference in its restricting circuits, are higher than the proof voltage problem of setting with the detecting point voltage in the solution circuit;
One electric potential transfer circuit 6, it can be an optical coupler, and this electric potential transfer circuit 6 is situated between mutually with battery detecting device 3 and electronic switch 4 to be connect, and makes its operating voltage that can adjust each service area, to solve the different problem of each service area voltage;
Hereat, with P type metal-oxide-semifield-effect electric crystal as electronic switch 4, and this electronic switch 4 is arranged at 2 of battery pack 1 and loads, but secondary control circuit with construction one safety and stability, remove and to avoid the concussion of electronic switch 4 repetitiousness, cause outside electronic switch 4 and battery pack 1 damage, and can exempt extra boost pressure circuit, add the setting of extra short circuit circuit for detecting and detecting electric voltage exception involution circuit, to reach cost-effective effect.
See also shown in Fig. 2 A, the B, implement calcspar and circuit diagram, mainly comprise for second of battery protecting apparatus provided by the utility model:
The battery pack 1 of one serial connection, this battery pack 1 can be lithium battery, makes it that charging function and can provide power supply to load end 2 is provided, and for load 2 normal operations, and this battery 1 series quantity do not limit, and makes in its product that can be applicable to big voltage;
One battery detecting device 3, it is situated between mutually with each battery 1 and connects, and to detect the power supply consume situation of each battery 1, consumes when finishing if detect battery electric power, then sends the message of changing battery;
One electronic switch 7, this electronic switch 7 is a N type metal-oxide half field effect transistor (N-MOSFET), this electronic switch 7 is arranged at the middle section of battery pack 1, makes this electronic switch 7 can use the low-voltage specification, or use cheap N-MOSFET (V of fine quality commonly used on the motherboard
DSS≤ 30V); This electronic switch 7 of being located at battery pack 1 stage casing mainly is as the keeping of the abnormal signal of protective circuit Lower Half, until the appearance of charging procedure or involution signal; And if normality only needs to use one group of electronic switch 7 get final product when using usually, but during the proof voltage of consideration electronic switch 7, an electronic switch 7 also can all be set in 1 in per four crosstalk ponds;
One negative pressure protective circuit 5, this negative pressure protective circuit 5 is situated between mutually with battery pack 1 and battery detecting device 3 and connects, and receive that electronic switch 7 transmits in close latch-up signal 71, but make the highest voltage difference in its restricting circuits, to solve the proof voltage problem that detecting point voltage in the circuit is higher than setting;
One electric potential transfer circuit 6, it can be an optical coupler, and this electric potential transfer circuit is situated between mutually with battery detecting device 3 and electronic switch 7 to be connect, and makes its operating voltage that can adjust each service area, to solve the different problem of each service area voltage;
Hereat; electronic switch 7 is arranged at the position, stage casing of battery pack, but with the secondary control circuit of construction safety and stability, to exempt the setting of extra boost pressure circuit; and can avoid the involution of detecting abnormal voltage behind the circuit protection, cause the damage of electronic switch 7 and battery 1.
See also shown in Fig. 3 A, the B, implement calcspar and circuit diagram, mainly comprise for the 3rd of battery protecting apparatus provided by the utility model:
The battery pack 1 of one serial connection, this battery pack 1 can be lithium battery, makes it that charging function and can provide power supply to load end 2 is provided, and for load 2 normal operations, and this battery 1 series quantity do not limit, and makes in its product that can be applicable to big voltage;
One battery detecting device 3, it is situated between mutually with electric potential transfer circuit 6 with each battery 1 and connects, and to detect the power supply consume situation of each battery, reaches transmission signal to electric potential transfer circuit 6;
One electronic switch 8, this electronic switch 8 is a N type metal-oxide half field effect transistor (N-MOSPET), and this electronic switch 8 is arranged at grounded circuit, makes its service position that is in minimum voltage, causes damage to avoid the vibration of electronic switch 8 repetitiousness;
One latch circuit 91, it is situated between mutually with electronic switch 8 and connects, and makes electronic switch 8 can receive the correct signal of closing;
One latch protection circuit 92, it is situated between mutually with electronic switch 8 and latch circuit and connects, and mainly is for protection latch circuit 91, makes latch circuit 91 can keep normal work;
One negative pressure protective circuit 5, this negative pressure protective circuit 5 are to be situated between mutually with battery pack 3 and battery detecting device 3 to connect, but make the highest voltage difference in its restricting circuits, are higher than the proof voltage problem of setting with the detecting point voltage in the solution circuit;
One electric potential transfer circuit 6, it can be an optical coupler, and this electric potential transfer circuit 6 is situated between mutually with battery detecting device and 3 latch circuits 91 to be connect, and makes its operating voltage that can adjust each service area, to solve the different problem of each service area voltage;
Hereat, electronic switch 8 is arranged in the grounded circuit, but, except that can avoiding the concussion of electronic switch 8 repetitiousness, and can exempts the setting of extra boost pressure circuit, to reach cost-effective purpose with the secondary control circuit of construction safety and stability.
Battery protecting apparatus provided by the utility model when comparing mutually with other common technologies, has following advantage:
1. when the utility model system utilizes current potential to adjust circuit and the many groups of withstand voltage protective circuit solution lithium battery serial connection, the voltage level difference of battery and the problem of overtension.
2. the suitable selection overcurrent detecting point of the utility model or utilize original IC internal circuit, the secondary control circuit of construction safety and stability is damaged to avoid contactor and lithium battery.
3. the utlity model has the advantage that prolongs electronic switch and lithium battery useful life.
Above-listed detailed description is specifying at a possible embodiments of the present utility model, but this embodiment is not in order to limit claim of the present utility model, allly do not break away from the equivalence that the utility model skill spirit does and implement or change, all should be contained in the claim of the present utility model.
Claims (11)
1, a kind of battery protecting apparatus comprises:
The battery pack of one serial connection;
One battery detecting device, it is situated between mutually with each battery and connects;
It is characterized in that:
One P type metal-oxide half field effect transistor electronic switch, this electronic switch is arranged between battery pack and load;
One negative pressure protective circuit, it is situated between mutually with battery pack and battery detecting device and connects;
One electric potential transfer circuit, it is situated between mutually with battery detecting device and electronic switch and connects.
2, by the described battery protecting apparatus of claim 1, it is characterized in that wherein this battery pack can be lithium battery, and this battery series quantity is not limit.
3, by the described battery protecting apparatus of claim 1, it is characterized in that wherein this electric potential transfer circuit is an optical coupler.
4, a kind of battery protecting apparatus comprises:
The battery pack of one serial connection;
One battery detecting device, it is situated between mutually with each battery and connects;
It is characterized in that:
The electronic switch of one N type metal-oxide half field effect transistor, this electronic switch is arranged at the middle section of battery pack;
One negative pressure protective circuit, this negative pressure protective circuit are situated between mutually with battery pack and battery detecting device and connect;
One electric potential transfer circuit, it is situated between mutually with battery detecting device and electronic switch and connects.
5, by the described battery protecting apparatus of claim 4, it is characterized in that wherein this battery is a lithium battery.
By the described battery protecting apparatus of claim 4, it is characterized in that 6, wherein this electronic switch uses the specification of low-voltage.
7, by the described battery protecting apparatus of claim 4, it is characterized in that, on wherein per four serial connection batteries an electronic switch can be set, make the series quantity of this battery unrestricted.
8, by the described battery protecting apparatus of claim 4, it is characterized in that wherein this electric potential transfer circuit is an optical coupler.
9, a kind of battery protecting apparatus comprises:
The battery pack of one serial connection;
One battery detecting device, it is situated between mutually with each battery and electric potential transfer circuit and connects;
It is characterized in that:
The electronic switch of one N type metal-oxide half field effect transistor, this electronic switch is arranged at grounded circuit;
One latch circuit, it is situated between mutually with electronic switch and connects;
One latch protection circuit, it is situated between mutually with electronic switch and latch circuit and connects;
One negative pressure protective circuit, it is situated between mutually with battery pack and battery detecting device and connects;
One electric potential transfer circuit, it is situated between mutually with battery detecting device and latch circuit and connects.
10, by the described battery protecting apparatus of claim 9, it is characterized in that wherein this battery is a lithium battery, and this battery series quantity is not limit.
11, by the described battery protecting apparatus of claim 9, it is characterized in that wherein this electric potential transfer circuit is an optical coupler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03275858 CN2638254Y (en) | 2003-07-28 | 2003-07-28 | Battery protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03275858 CN2638254Y (en) | 2003-07-28 | 2003-07-28 | Battery protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2638254Y true CN2638254Y (en) | 2004-09-01 |
Family
ID=34302192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03275858 Expired - Fee Related CN2638254Y (en) | 2003-07-28 | 2003-07-28 | Battery protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2638254Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101807790A (en) * | 2009-02-13 | 2010-08-18 | 精工电子有限公司 | Battery protection circuit device |
| CN103098258A (en) * | 2010-09-16 | 2013-05-08 | 索尼公司 | Battery pack and method for detecting housing status of secondary battery in battery pack |
-
2003
- 2003-07-28 CN CN 03275858 patent/CN2638254Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101807790A (en) * | 2009-02-13 | 2010-08-18 | 精工电子有限公司 | Battery protection circuit device |
| CN101807790B (en) * | 2009-02-13 | 2014-06-04 | 精工电子有限公司 | Battery protection circuit device |
| CN103098258A (en) * | 2010-09-16 | 2013-05-08 | 索尼公司 | Battery pack and method for detecting housing status of secondary battery in battery pack |
| CN103098258B (en) * | 2010-09-16 | 2015-08-19 | 索尼公司 | Battery pack and check the method for store status of secondary cell in battery pack |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: YUQUAN ENERGY TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: WEIDA ENERGY SOURCE SCIENCE AND TECHNOLOGY CO., LTD. Effective date: 20050304 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20050304 Address after: Jenai Rd. in Daan District of Taiwan city in Taipei Province three 143 Lane 8 Building No. 1 Patentee after: WIZ Energy Technology Co., Ltd. Address before: 6 floor, No. two, 69-10 Middle East Road, freshwater Town, Taipei County, Taiwan, China Patentee before: Weida Energy Source Science and Technology Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040901 Termination date: 20110728 |