CN107171405A - A kind of battery bag with breaking protection technology - Google Patents
A kind of battery bag with breaking protection technology Download PDFInfo
- Publication number
- CN107171405A CN107171405A CN201710567155.7A CN201710567155A CN107171405A CN 107171405 A CN107171405 A CN 107171405A CN 201710567155 A CN201710567155 A CN 201710567155A CN 107171405 A CN107171405 A CN 107171405A
- Authority
- CN
- China
- Prior art keywords
- battery
- protection
- lithium battery
- protective module
- current source
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000004224 protection Effects 0.000 title claims abstract description 43
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 37
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 37
- 230000001681 protective effect Effects 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims 1
- 230000009467 reduction Effects 0.000 abstract description 3
- 239000004065 semiconductor Substances 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H02J7/0026—
Abstract
The invention provides a kind of battery bag with breaking protection technology, belong to semiconductor integrated circuit technical field.The battery bag includes：Lithium battery group and Li battery protection IC；Lithium battery group is by the lithium battery group of three section series connection into Li battery protection IC includes the first current source, the second current source, the first under-voltage protective module, the second under-voltage protective module, overvoltage protective module, logic processing module and the first NMOS power tubes；When there is broken string phenomenon to occur between lithium battery group and Li battery protection IC; due to producing the first current source and the second current source between first segment and Section of three lithium battery; it so will result in first segment or the 3rd batteries enter overvoltage protection; and second section enters under-voltage protection pattern; so as to pass through the processing of logic processing module; the first NMOS power tubes are closed, so as to reach the purpose of breaking protection.The presence of lithium battery pack interrupt line phenomenon, the risk that reduction lithium battery group is used can effectively be found.
Description
Technical field
The invention belongs to semiconductor integrated circuit technical field, and in particular to a kind of battery with breaking protection technology
Bag.
Background technology
At present in the products such as power management chip, the application of Li battery protection IC is widely.With lithium power electric
The technology in pond is constantly ripe, and lithium battery is combined into the battery pack of different voltages and capacity by connection in series-parallel, can apply completely
In high-power various loads.What application was most at present is the products such as electric bicycle, battery-operated motor cycle, ups power.
The problem of there is security due to lithium battery, so when lithium battery forms different battery packs by connection in series-parallel,
The protections such as lithium battery individually be overcharged, mistake is put must be saved to every, to improve the security of lithium battery applications.Therefore, lithium electricity
Pond, which is protected between chip and the often section lithium battery of lithium battery group, can all cabling connection.Traditional Li battery protection IC can not be right
The annexation detection of these lines, disconnected in these lines, in the case of the cell voltage that often economizes on electricity is unbalanced, also None- identified is gone forward side by side
Row protection.
The content of the invention
For solve existing Li battery protection IC can not to Li battery protection IC and the often section lithium battery of lithium battery group it
Between cabling connection whether be normally carried out judge technical problem, the invention provides a kind of electricity with breaking protection technology
Chi Bao.
A kind of battery bag with breaking protection technology, including：Lithium battery group and Li battery protection IC；Lithium battery group by
The lithium battery group of three section series connection is into Li battery protection IC includes the first current source I1, the second current source I2, the first under-voltage protection
Module, the second under-voltage protective module, overvoltage protective module, logic processing module and the first NMOS power tubes N1；First batteries
Negative terminal is GND, and first segment battery positive is VB1；Second section battery negative terminal is VB1, and second section battery positive is VB2；Section three,
Battery negative terminal is VB2, and the 3rd batteries anode is P+；First current source I1 and the first under-voltage protective module are all connected to P+ and VB2
Between；Overvoltage protective module is connected between VB2 and VB1；Second current source I2 and the second under-voltage protective module be all connected to VB1 and
Between GND；First under-voltage protective module, overvoltage protective module, the output of the second under-voltage protective module connect logic processing module；Patrol
The output for collecting processing module connects the first NMOS power tubes N1 grid；First NMOS power tubes N1 grounded drain, source electrode connects electricity
Chi Bao negative pole P-；The positive pole P+ of the positive pole of battery bag namely the 3rd batteries.
When there is broken string phenomenon to occur between lithium battery group and Li battery protection IC, due in first segment and Section of three lithium
The first current source I1 and the second current source I2 are produced between battery, then will result in first segment or the 3rd batteries enter overvoltage
Protection, and second section enters under-voltage protection pattern, so as to by the processing of logic processing module, close the first NMOS power tubes
N1, so as to reach the purpose of breaking protection.By breaking protection technology, lithium battery pack interrupt line phenomenon can be effectively found
In the presence of the risk that reduction lithium battery group is used.
Brief description of the drawings
Fig. 1 is the structural representation for the battery bag with breaking protection technology that embodiment of the present invention is provided.
Embodiment
To make the object, technical solutions and advantages of the present invention of greater clarity, with reference to embodiment and join
According to accompanying drawing, the present invention is described in more detail.It should be understood that these descriptions are merely illustrative, and it is not intended to limit this hair
Bright scope.In addition, in the following description, the description to known features and technology is eliminated, to avoid unnecessarily obscuring this
The concept of invention.
For solve existing Li battery protection IC can not to Li battery protection IC and the often section lithium battery of lithium battery group it
Between cabling connection whether be normally carried out judge technical problem, the invention provides a kind of electricity with breaking protection technology
Chi Bao.As shown in figure 1, the battery bag includes：Lithium battery group and Li battery protection IC；Lithium battery group is electric by the lithium of three section series connection
Pond is constituted, and Li battery protection IC includes the first current source I1, the second current source I2, the first under-voltage protective module 1, second is under-voltage
Protection module 3, overvoltage protective module 2, the NMOS power tubes N1 of logic processing module 4 and the first；First segment battery negative terminal is GND,
First segment battery positive is VB1；Second section battery negative terminal is VB1, and second section battery positive is VB2；3rd batteries negative terminal is
VB2, the 3rd batteries anode is P+；First current source I1 and the first under-voltage protective module 1 are all connected between P+ and VB2；Overvoltage
Protection module 2 is connected between VB2 and VB1；Second current source I2 and the second under-voltage protective module 3 are all connected between VB1 and GND；
First under-voltage protective module 1, overvoltage protective module 2, the output of the second under-voltage protective module 3 connect logic processing module 4；At logic
The output of reason module 4 connects the first NMOS power tubes N1 grid；First NMOS power tubes N1 grounded drain, source electrode connects battery bag
Negative pole P-；The positive pole P+ of the positive pole of battery bag namely the 3rd batteries.
When there is broken string phenomenon to occur between lithium battery group and Li battery protection IC, due in first segment and Section of three lithium
The first current source I1 and the second current source I2 are produced between battery, then will result in first segment or the 3rd batteries enter overvoltage
Protection, and second section enters under-voltage protection pattern, so as to by the processing of logic processing module, close the first NMOS power tubes
N1, so as to reach the purpose of breaking protection.By breaking protection technology, lithium battery pack interrupt line phenomenon can be effectively found
In the presence of the risk that reduction lithium battery group is used.
It should be appreciated that the above-mentioned embodiment of the present invention is used only for exemplary illustration or explains the present invention's
Principle, without being construed as limiting the invention.Therefore, that is done without departing from the spirit and scope of the present invention is any
Modification, equivalent substitution, improvement etc., should be included in the scope of the protection.In addition, appended claims purport of the present invention
Covering the whole changes fallen into scope and border or this scope and the equivalents on border and repairing
Change example.
Claims (1)
1. a kind of battery bag with breaking protection technology, it is characterised in that including：Lithium battery group and Li battery protection IC；
Lithium battery group includes the first current source I1, the second current source I2, the by the lithium battery group of three section series connection into, Li battery protection IC
One under-voltage protective module, the second under-voltage protective module, overvoltage protective module, logic processing module and the first NMOS power tubes N1；
First segment battery negative terminal is GND, and first segment battery positive is VB1；Second section battery negative terminal is VB1, and second section battery positive is
VB2；3rd batteries negative terminal is VB2, and the 3rd batteries anode is P+；First current source I1 and the first under-voltage protective module all connect
Between P+ and VB2；Overvoltage protective module is connected between VB2 and VB1；Second current source I2 and the second under-voltage protective module all connect
Between VB1 and GND；First under-voltage protective module, overvoltage protective module, the output of the second under-voltage protective module connect logical process
Module；The output of logic processing module connects the first NMOS power tubes N1 grid；First NMOS power tubes N1 grounded drain, source
Pole meets the negative pole P- of battery bag；The positive pole P+ of the positive pole of battery bag namely the 3rd batteries.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710567155.7A CN107171405A (en) | 2017-07-12 | 2017-07-12 | A kind of battery bag with breaking protection technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710567155.7A CN107171405A (en) | 2017-07-12 | 2017-07-12 | A kind of battery bag with breaking protection technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107171405A true CN107171405A (en) | 2017-09-15 |
Family
ID=59818328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710567155.7A Pending CN107171405A (en) | 2017-07-12 | 2017-07-12 | A kind of battery bag with breaking protection technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107171405A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110061478A (en) * | 2019-04-28 | 2019-07-26 | 南京中感微电子有限公司 | A kind of battery pack thread-breakage protecting and system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102195324A (en) * | 2011-05-18 | 2011-09-21 | 张兴发 | Battery protection chip, circuit and method |
| CN102628910A (en) * | 2011-01-11 | 2012-08-08 | 拉碧斯半导体株式会社 | Semiconductor circuit, semiconductor device and line break detection method |
| CN203261012U (en) * | 2012-11-19 | 2013-10-30 | 宁波比亚迪半导体有限公司 | Protective device and protective system for battery disconnection |
| CN103825252A (en) * | 2012-11-19 | 2014-05-28 | 比亚迪股份有限公司 | Protective device and protective system for disconnection of battery connection |
| CN103972868A (en) * | 2013-01-31 | 2014-08-06 | 三美电机株式会社 | Protection ic and method of monitoring a battery voltage |
| CN104242374A (en) * | 2013-06-07 | 2014-12-24 | 精工电子有限公司 | Charge/discharge control circuit and battery device |
-
2017
- 2017-07-12 CN CN201710567155.7A patent/CN107171405A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102628910A (en) * | 2011-01-11 | 2012-08-08 | 拉碧斯半导体株式会社 | Semiconductor circuit, semiconductor device and line break detection method |
| CN102195324A (en) * | 2011-05-18 | 2011-09-21 | 张兴发 | Battery protection chip, circuit and method |
| CN203261012U (en) * | 2012-11-19 | 2013-10-30 | 宁波比亚迪半导体有限公司 | Protective device and protective system for battery disconnection |
| CN103825252A (en) * | 2012-11-19 | 2014-05-28 | 比亚迪股份有限公司 | Protective device and protective system for disconnection of battery connection |
| CN103972868A (en) * | 2013-01-31 | 2014-08-06 | 三美电机株式会社 | Protection ic and method of monitoring a battery voltage |
| CN104242374A (en) * | 2013-06-07 | 2014-12-24 | 精工电子有限公司 | Charge/discharge control circuit and battery device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110061478A (en) * | 2019-04-28 | 2019-07-26 | 南京中感微电子有限公司 | A kind of battery pack thread-breakage protecting and system |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170915 |
|
| WD01 | Invention patent application deemed withdrawn after publication |