CN201466157U - Lithium ion battery group protection circuit capable of achieving series and parallel charging selection - Google Patents
Lithium ion battery group protection circuit capable of achieving series and parallel charging selection Download PDFInfo
- Publication number
- CN201466157U CN201466157U CN2009200986513U CN200920098651U CN201466157U CN 201466157 U CN201466157 U CN 201466157U CN 2009200986513 U CN2009200986513 U CN 2009200986513U CN 200920098651 U CN200920098651 U CN 200920098651U CN 201466157 U CN201466157 U CN 201466157U
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- China
- Prior art keywords
- circuit
- lithium ion
- protection
- battery group
- ion battery
- 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.)
- Expired - Lifetime
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 19
- 230000008878 coupling Effects 0.000 claims abstract description 11
- 238000010168 coupling process Methods 0.000 claims abstract description 11
- 238000005859 coupling reaction Methods 0.000 claims abstract description 11
- 230000005669 field effect Effects 0.000 claims abstract description 9
- 239000000178 monomer Substances 0.000 claims description 8
- 230000001681 protective effect Effects 0.000 description 10
- 239000000654 additive Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The utility model relates to a lithium ion battery group protection circuit capable of achieving series and parallel charging selection, which comprises each single battery protection equilibrium module which is correspondingly connected with a field effect transistor, and whose one end is connected with the anode of a power supply and other end is connected with the cathode of the power supply, a selection module which is communicated with a battery is simultaneously and respectively connected with each signal production module output voltage coupling circuit and a protection circuit board, and each signal production module output voltage coupling circuit and the protection circuit board are respectively connected with a mail loop field effect transistor. Since the selection module circuit and each signal production module output voltage coupling circuit are further arranged, when in application, the protection module of the battery group can simultaneously support a series-charging mode and a parallel-charging mode, and the lithium ion battery group protection circuit is suitable for charging various battery groups, and is particularly suitable for charging battery groups with big volume and electric current. The lithium ion battery group protection circuit has excellent versatility, simple structure and reliable performance, and can achieve battery group protection functions under the parallel charging mode and the series charging mode.
Description
Technical field
The utility model relates to a kind of battery pack protective circuit, particularly a kind of lithium ion battery pack protection circuit of realizing going here and there and charging and select.
Background technology
At present, the protected mode of lithium ion battery pack protection circuit plate mainly is: fill battery pack under the charging modes at string, carry out additives for overcharge protection, the over of battery pack, the over of cell in the additives for overcharge protection of cell, the battery pack in the battery pack by voltage acquisition; Carry out the overcurrent protection of battery pack by the total loop current acquisition.And fill charging modes as an important means of lithium ion battery uniformity assurance; in multi-series and parallel; generally adopt in big electric current, the large-capacity battery pack; lithium ion battery group protected mode commonly used in the industry mainly is the protection of filling charging modes for string, does not consider and fills battery pack protection under the charging modes.
Therefore, providing a kind of simple in structure, dependable performance, easy the realizing of application gone here and there and the lithium ion battery pack protection circuit that charges and select, is one of these those skilled in the art problem that should address.
The utility model content
The purpose of this utility model is to overcome above-mentioned weak point, and a kind of lithium ion battery pack protection circuit of going here and there and charging and selecting realized of simple in structure, dependable performance is provided.
The technical scheme that adopts of the utility model is for achieving the above object: a kind of lithium ion battery pack protection circuit of going here and there and charging and selecting realized, it is characterized in that: this circuit is provided with each cell protection balance module, the corresponding field-effect transistor that connects, and an end is connected with positive source, and the other end is connected with power cathode; By the selection module that is provided with, connect respectively simultaneously each monomer protection module output voltage coupling circuit and holding circuit plate; Each monomer protection module output voltage coupling circuit is connected with the total loop field-effect transistor respectively with the holding circuit plate.
The Global Macros circuit of traditional storage battery group is improved as the mode that the cell protective circuit combines with traditional storage battery group protective circuit.This batteries protection can select to use string to fill and fill charging modes.When batteries selected string to fill charging modes, the cell holding circuit can realize the function of battery charging equilibrium; When batteries is selected and fill charging modes, by each cell holding circuit battery pack is protected, each cell and charger and mold filling piece are consisted of a loop, finish and fill charging.
The beneficial effects of the utility model are: this battery pack protection mode can support simultaneously string fill charging modes and and fill charging modes, be applicable to the charging of various battery pack, especially be suitable for the batteries charging of big capacity, big electric current.This circuit versatility is good, and baffle can be realized the battery pack protection function under the series charging, charging in parallel.This protective circuit mode is carry out on existing protective circuit basis perfect, is a kind of lithium-ions battery group protective circuit of simple in structure, dependable performance.
Description of drawings
Fig. 1 is existing lithium ion battery group baffle circuit theory diagrams;
Fig. 2 is the utility model lithium ion battery pack protection circuit schematic diagram.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, details are as follows to embodiment, structure, feature that foundation the utility model provides:
As shown in Figure 2, a kind of lithium ion battery pack protection circuit of realizing going here and there and charging and select, this circuit is provided with each cell protection balance module, as representing among the figure: cell protection n-1 (balance module n-1), the corresponding field-effect transistor (MOSEFET) that connects; And an end is connected with positive source, and the other end is connected with power cathode; By the selection module that is provided with, connect respectively simultaneously each monomer protection module output voltage coupling circuit and holding circuit plate; Each monomer protection module output voltage coupling circuit is connected with total loop field-effect transistor (MOSFET) respectively with the holding circuit plate.
Described cell protection balance module group is connected with field-effect transistor, and charging inlet and string and modes selecting module are pegged graft then, and are connected on each monomer protection module output voltage coupling circuit and the holding circuit plate, thus the charging process of finishing.
Operation principle: this circuit so that batteries by selecting the batteries protected mode according to different charging modes.When adopting string to fill charging modes, battery pack is gone here and there the protection chip by special-purpose lithium ion battery in the protective circuit plate more, be S-8254 as adopting model; Monomer battery voltage is gathered, each cell of battery pack is carried out equalizing charge by the balance module that is provided with.When adopting and filling charging modes, string fills balance module circuit under the charging modes to be become and fills the independent protective circuit of each cell under the charging modes, form an independent loop with cell and charger, realize independent separately defencive function, the defencive function by each protective circuit is realized and every defencive function of protective circuit when filling; Be provided with coupling circuit at the batteries total loop, MOSFET controls to total loop, guarantees the overall security of batteries, as the protection of abnormalities such as short circuit.
Above-mentioned with reference to the detailed description that embodiment can realize going here and there to this and the lithium ion battery pack protection circuit selected of charging carries out, be illustrative rather than determinate; Therefore in the variation and the modification that do not break away under the utility model general plotting, should belong within the protection domain of the present utility model.
Claims (1)
1. the lithium ion battery pack protection circuit that can realize going here and there and charge and select, it is characterized in that: this circuit is provided with each cell protection balance module, corresponding connect field-effect transistor, and an end is connected with positive source, the other end is connected with power cathode; By the selection module that is provided with, connect respectively simultaneously each monomer protection module output voltage coupling circuit and holding circuit plate; Each monomer protection module output voltage coupling circuit is connected with the total loop field-effect transistor respectively with the holding circuit plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200986513U CN201466157U (en) | 2009-09-04 | 2009-09-04 | Lithium ion battery group protection circuit capable of achieving series and parallel charging selection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200986513U CN201466157U (en) | 2009-09-04 | 2009-09-04 | Lithium ion battery group protection circuit capable of achieving series and parallel charging selection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201466157U true CN201466157U (en) | 2010-05-12 |
Family
ID=42393505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200986513U Expired - Lifetime CN201466157U (en) | 2009-09-04 | 2009-09-04 | Lithium ion battery group protection circuit capable of achieving series and parallel charging selection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201466157U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103682486A (en) * | 2013-12-23 | 2014-03-26 | 中国科学院电工研究所 | Multi-module cascading balancing method for cells |
| TWI556545B (en) * | 2014-07-09 | 2016-11-01 | Charge control circuit, flyback power conversion system and charging control method | |
| US10944274B2 (en) | 2018-01-19 | 2021-03-09 | Microsoft Technology Licensing, Llc | Ideal diode function implemented with existing battery protection FETs |
-
2009
- 2009-09-04 CN CN2009200986513U patent/CN201466157U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103682486A (en) * | 2013-12-23 | 2014-03-26 | 中国科学院电工研究所 | Multi-module cascading balancing method for cells |
| TWI556545B (en) * | 2014-07-09 | 2016-11-01 | Charge control circuit, flyback power conversion system and charging control method | |
| US10944274B2 (en) | 2018-01-19 | 2021-03-09 | Microsoft Technology Licensing, Llc | Ideal diode function implemented with existing battery protection FETs |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100512 |