CN203691022U - Overvoltage impact preventing battery management system protection device - Google Patents
Overvoltage impact preventing battery management system protection device Download PDFInfo
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- CN203691022U CN203691022U CN201420048350.0U CN201420048350U CN203691022U CN 203691022 U CN203691022 U CN 203691022U CN 201420048350 U CN201420048350 U CN 201420048350U CN 203691022 U CN203691022 U CN 203691022U
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- oxide
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- battery management
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- 239000004065 semiconductor Substances 0.000 claims abstract description 49
- 230000001052 transient effect Effects 0.000 claims abstract description 18
- 230000001629 suppression Effects 0.000 claims description 15
- 239000003381 stabilizer Substances 0.000 claims description 13
- 230000001681 protective effect Effects 0.000 claims description 12
- 238000007599 discharging Methods 0.000 abstract 6
- 229910044991 metal oxide Inorganic materials 0.000 abstract 1
- 150000004706 metal oxides Chemical class 0.000 abstract 1
- 238000001514 detection method Methods 0.000 description 3
- 239000002800 charge carrier Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Abstract
The utility model discloses an overvoltage impact preventing battery management system protection device. A battery management system comprises a charge driving module and a discharge driving module. The characteristics are that the protection device comprises a charging MOS (metal oxide semiconductor) transistor, a discharging MOS transistor and a plurality of transient voltage suppressors; the charge driving module and the discharge driving module are connected with the charging MOS transistor and the discharging MOS transistor respectively; and the plurality of transient voltage suppressors are connected between a drain electrode and a source electrode of the discharging MOS transistor in parallel. The overvoltage impact preventing battery management system protection device restricts voltage within a safe working range of the discharging MOS transistor through connecting the plurality of transient voltage suppressors at two ends of the source electrode and the drain electrode of the discharging MOS transistor in parallel, thereby ensuring the safety of the discharging MOS transistor, and enabling the battery management system to be more stable.
Description
Technical field
The utility model relates to battery management system technical field, the battery management system protective device that particularly a kind of anti-overvoltage is impacted.
Background technology
Along with the development of electronic industry, people are increasing to the demand of clean energy resource, and battery is as a kind of storage medium of the energy, has the features such as energy density is high, environmentally safe, and its range of application is more and more extensive.But, safe and reliable use battery, just need to monitor battery a kind of device, thereby prevent the situations such as battery overcharges, overdischarge, short circuit and the battery life that causes seriously shortens, even cause the generation of the situations such as security incident.This device is exactly battery management system.
At present, existing battery management system comprises battery detection device, multiple resistance and multiple metal-oxide-semiconductor, and battery detection device is for detection of each battery both end voltage, at cell voltage during higher than a certain threshold values, this battery and metal-oxide-semiconductor conducting in parallel, the battery being full of to other to fall electric voltage equalization.
The multi-factor structure of general high-power MOS tube shortens dramatically the channel length of each MOS element, and be the raceway groove parallel connection of all MOS elements, this certainly will make channel resistance significantly reduce, thereby makes under same rated junction temperature, and its on state current improves greatly.In addition, channel length shortens, and is that the transit time of charge carrier reduces.The parallel connection of raceway groove has allowed more charge carrier to spend more simultaneously, and shortened its switching time, although make like this MOS element can pass through larger electric current, MOS component pressure can reduce a lot.While being particularly applied in heavy-current discharge, because load may be perceptual, the moment of turn-offing MOS element can produce induced voltage, and punctures MOS element, causes battery management system unstable.
In order to overcome the problems referred to above, common way is the metal-oxide-semiconductor afterflow that adopts high Breakdown Voltage Power, but this has but improved the cost of battery management system greatly.
Utility model content
The technical problems to be solved in the utility model is: the low on-resistance metal-oxide-semiconductor in battery management system is when by larger electric current, the withstand voltage of metal-oxide-semiconductor can reduce a lot, the moment of turn-offing metal-oxide-semiconductor can produce induced voltage, thereby punctures metal-oxide-semiconductor, causes the unstable of battery management system.
The utility model solves the technical scheme that its technical problem adopts:
The battery management system protective device that anti-overvoltage is impacted, described battery management system comprises charging driver module and electric discharge driver module, it is characterized in that, described protective device comprises charging metal-oxide-semiconductor, electric discharge metal-oxide-semiconductor and some Transient Suppression Diodes; Described charging driver module is connected with described charging metal-oxide-semiconductor and described electric discharge metal-oxide-semiconductor respectively with described discharge module; Several Transient Suppression Diodes in parallel between the drain electrode of described electric discharge metal-oxide-semiconductor and source electrode.
Further, the power of described Transient Suppression Diode and quantity draw according to maximum overpressure and instantaneous large-current estimation.
Further, described charging driver module is connected with the grid of described charging metal-oxide-semiconductor.
Further, a voltage-stabiliser tube in parallel also between the source electrode of described charging metal-oxide-semiconductor and drain electrode, the positive pole of described voltage-stabiliser tube is connected with the source electrode of described charging metal-oxide-semiconductor, and its negative pole is connected with the drain electrode of described charging metal-oxide-semiconductor.
Further, described electric discharge driver module is connected with the grid of described electric discharge metal-oxide-semiconductor.
Further, a voltage-stabiliser tube in parallel also between the source electrode of described electric discharge metal-oxide-semiconductor and drain electrode, the positive pole of described voltage-stabiliser tube is connected with the source electrode of described electric discharge metal-oxide-semiconductor, and its negative pole is connected with the drain electrode of described electric discharge metal-oxide-semiconductor.
The beneficial effects of the utility model are: the utility model is by the source electrode at electric discharge metal-oxide-semiconductor and drain electrode two ends multiple Transient Suppression Diodes in parallel, thereby by limiting voltage electric discharge metal-oxide-semiconductor area of safety operaton in, the safety that has guaranteed electric discharge metal-oxide-semiconductor, makes battery management system more stable.
Accompanying drawing explanation
Fig. 1 is electrical block diagram of the present utility model.
Wherein, the 01-driver module that charges, the 02-driver module that discharges, the 03-metal-oxide-semiconductor that charges, 04 electric discharge metal-oxide-semiconductor, 05-Transient Suppression Diode, 06-voltage-stabiliser tube.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
As shown in Figure 1, the charging driver module 01 of battery management system and electric discharge driver module 02; Battery management system protective device comprises charging metal-oxide- semiconductor 03,05 and 2 voltage-stabiliser tubes 06 of electric discharge 04,5 Transient Suppression Diodes of metal-oxide-semiconductor; Charging driver module 01 is connected with the grid of charging metal-oxide-semiconductor 03, electric discharge driver module 02 is connected with the grid of electric discharge metal-oxide-semiconductor 04, and, source electrode and drain electrode two ends at charging metal-oxide-semiconductor 03 and electric discharge metal-oxide-semiconductor 04 are connected with respectively a voltage-stabiliser tube 06, its source electrode is connected with the positive pole of voltage-stabiliser tube 06, and its drain electrode is connected with the negative pole of voltage-stabiliser tube 06.
Maximum innovation of the present utility model is, electric discharge metal-oxide-semiconductor 04 source electrode and drain electrode between be also parallel with some Transient Suppression Diodes 05, in this enforcement figure, adopt 5 Transient Suppression Diodes 05 as an example, in actual applications, the power of Transient Suppression Diode 05 and quantity can according to electric discharge metal-oxide-semiconductor 04 two ends maximum overpressure and moment maximum current estimate.Concrete grammar belongs to those skilled in the art's common method, no longer describes in detail herein.
The utility model is in specific works process, when the induced voltage producing when load two ends is greater than the puncture voltage of Transient Suppression Diode 05, Transient Suppression Diode 05 can absorb overvoltage, although the puncture voltage of Transient Suppression Diode 05 is inconsistent, but multiple transient voltage suppressor parallelings can be by the limiting voltage at electric discharge metal-oxide-semiconductor 04 two ends in the working region of a safety, thereby guarantee the safety of electric discharge metal-oxide-semiconductor 04, made the work safety and stability more of battery management system.
The above-described preferred embodiment of utilizing describes the utility model in detail, and unrestricted scope of the present utility model.Those skilled in the art can, by reading after the utility model, make trickle change and adjustment, and the main idea of the present utility model of will can yet be regarded as place, does not also depart from spirit and scope of the present utility model.
Claims (6)
1. the battery management system protective device that anti-overvoltage is impacted, described battery management system comprises charging driver module and electric discharge driver module, it is characterized in that, described protective device comprises charging metal-oxide-semiconductor, electric discharge metal-oxide-semiconductor and some Transient Suppression Diodes; Described charging driver module is connected with described charging metal-oxide-semiconductor and described electric discharge metal-oxide-semiconductor respectively with described discharge module; Several Transient Suppression Diodes in parallel between the drain electrode of described electric discharge metal-oxide-semiconductor and source electrode.
2. the battery management system protective device that a kind of anti-overvoltage as claimed in claim 1 is impacted, is characterized in that, the power of described Transient Suppression Diode and quantity draw according to maximum overpressure and instantaneous large-current estimation.
3. the battery management system protective device that a kind of anti-overvoltage as claimed in claim 1 is impacted, is characterized in that, described charging driver module is connected with the grid of described charging metal-oxide-semiconductor.
4. the battery management system protective device that a kind of anti-overvoltage as claimed in claim 3 is impacted; it is characterized in that; a voltage-stabiliser tube in parallel also between the source electrode of described charging metal-oxide-semiconductor and drain electrode; the positive pole of described voltage-stabiliser tube is connected with the source electrode of described charging metal-oxide-semiconductor, and its negative pole is connected with the drain electrode of described charging metal-oxide-semiconductor.
5. the battery management system protective device that a kind of anti-overvoltage as claimed in claim 1 is impacted, is characterized in that, described electric discharge driver module is connected with the grid of described electric discharge metal-oxide-semiconductor.
6. the battery management system protective device that a kind of anti-overvoltage as claimed in claim 1 is impacted; it is characterized in that; a voltage-stabiliser tube in parallel also between the source electrode of described electric discharge metal-oxide-semiconductor and drain electrode; the positive pole of described voltage-stabiliser tube is connected with the source electrode of described electric discharge metal-oxide-semiconductor, and its negative pole is connected with the drain electrode of described electric discharge metal-oxide-semiconductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420048350.0U CN203691022U (en) | 2014-01-26 | 2014-01-26 | Overvoltage impact preventing battery management system protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420048350.0U CN203691022U (en) | 2014-01-26 | 2014-01-26 | Overvoltage impact preventing battery management system protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203691022U true CN203691022U (en) | 2014-07-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420048350.0U Expired - Lifetime CN203691022U (en) | 2014-01-26 | 2014-01-26 | Overvoltage impact preventing battery management system protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203691022U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103855765A (en) * | 2014-01-26 | 2014-06-11 | 江苏博强新能源科技有限公司 | Battery management system protecting device preventing over-voltage impact |
| CN108075457A (en) * | 2017-12-27 | 2018-05-25 | 上海传英信息技术有限公司 | A kind of anti-surge circuit, surge pipe and the electrical equipment with the surge pipe |
-
2014
- 2014-01-26 CN CN201420048350.0U patent/CN203691022U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103855765A (en) * | 2014-01-26 | 2014-06-11 | 江苏博强新能源科技有限公司 | Battery management system protecting device preventing over-voltage impact |
| CN108075457A (en) * | 2017-12-27 | 2018-05-25 | 上海传英信息技术有限公司 | A kind of anti-surge circuit, surge pipe and the electrical equipment with the surge pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: Suzhou City, Jiangsu province 215625 Zhangjiagang City Jin Fengzhen Jiangsu Yangtze River International Metallurgical Industrial Park (Yu Bridge Village 25) Jiangsu Bo new energy Polytron Technologies Inc Patentee after: JIANGSU BOQIANG NEW ENERGY TECHNOLOGY CO.,LTD. Address before: Suzhou City, Jiangsu province 215625 Zhangjiagang City Jin Fengzhen Jiangsu Yangtze River International Metallurgical Industrial Park (Yu Bridge Village 25) Jiangsu Richpower Amperex Technology Limited Patentee before: JIANGSU RICHPOWER NEW ENERGY CO.,LTD. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20140702 |
|
| CX01 | Expiry of patent term |