CN202042919U - High-capacity lithium battery pack - Google Patents
High-capacity lithium battery pack Download PDFInfo
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- CN202042919U CN202042919U CN2011201304932U CN201120130493U CN202042919U CN 202042919 U CN202042919 U CN 202042919U CN 2011201304932 U CN2011201304932 U CN 2011201304932U CN 201120130493 U CN201120130493 U CN 201120130493U CN 202042919 U CN202042919 U CN 202042919U
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- lithium battery
- capacity lithium
- voltage
- battery bag
- discharge
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Abstract
The utility model relates to a high-capacity lithium battery pack, which is provided with a lithium battery unit (1), a charging interface, a discharging interface, a battery protective plate (2), an electric quantity displaying light (5), a charging fuse (6), a temperature control charging switch (7) and a discharging fuse (8), wherein the lithium battery unit (1) is formed by serially connecting a plurality of single battery cells, the charging interface and the discharging interface are composed of female plugs (3a and 3b) and male plugs (4a and 4b), and the battery protective plate (2) is used for performing overcharge, overdischarge and overcurrent protection and balancing voltage of the battery cells for the battery unit (1). The high-capacity lithium battery pack with the high-capacity lithium battery unit has the advantages of small volume, light weight, portability, high capacity, high energy density, high efficiency, high bearing ability, long cycle life, low self-discharge rate, freeness of memory effect and pollution, excellent constant-voltage source and the like, and by the aid of the battery protective plate, adverse cases such as overcharge, overdischarge, overcurrent, over-high voltage of the single battery cells are effectively prevented, so that the quality of the lithium battery pack is remarkably improved, and the lithium battery pack has the advantages of stability in performance and long service life.
Description
Technical field
The utility model relates to the compact power technology, more specifically, relates to a kind of high-capacity lithium battery bag.
Background technology
Power brick (Battery Pack) is a kind of compact power, but has advantage such as the big repeated charge of capacity, can wait the external power supply of occasion as various electric equipments out of doors.Existing power brick mainly is divided into two kinds of lead-acid battery bag and lithium battery bags.Lead-acid battery containing amount is big, but that shortcoming is a weight is big, cycle life short, and pollution is arranged.Now the lithium battery bag is more common on the market, and lithium battery has advantages such as efficient height, life-span are long, pollution-free, memory-less effect.But existing lithium battery bag is the following shortcoming of ubiquity also: at first be that capacity is little, single is subjected to the restriction of lithium battery capacity service time, when electric equipment compares power consumption, need charge waste user's time to the lithium battery bag repeatedly; Secondly, because the own characteristic of lithium battery material, it is subjected to the user easily and overcharges, crosses and put or the influence of bad use such as overcurrent; In case be subjected to user's abuse, the lithium battery performance can sharply descend, and influences the lithium battery life-span.More than the shortcoming of two aspects, seriously restricted the contract for fixed output quotas quality of product of existing lithium battery, become the bottleneck of lithium battery packet technology development.
The utility model content
Above-mentioned defective at existing lithium battery bag; the utility model provides a kind of improved high-capacity lithium battery bag; adopt many group lithium batteries that thereby larger capacity is provided; and can put for the lithium battery group provides, overcharge, effective protection of aspect such as overcurrent and electric voltage equalization, prolonged the Acceptable life of lithium battery.
The high-capacity lithium battery bag that the utility model provides; has the lithium battery group that is in series by several monomer electricity cores; by female plug and the male plug charging inlet of forming and the interface that discharges; it is characterized in that; also have battery protecting plate, be used for to the lithium battery group overcharge, cross put, overcurrent protection and electric core electric voltage equalization.
Preferably, described battery protecting plate comprises electric core voltage checking chip, and the lithium battery group that is used for sampling respectively saves the voltage of monomer electricity core, and according to the voltage starting over-charge protective of arbitrary electric core wherein or cross and put protection.
Further preferably, described battery protecting plate comprises charge controller and discharge controller, is used for opening or turn-offing under the control of described electric core voltage checking chip charge circuit and discharge loop, puts protection to overcharge and to cross.
Preferably, described battery protecting plate comprises the current detecting chip, is used to obtain discharging current, and starts overcurrent protection when described discharging current overcurrent surpasses special time length.
Further preferably, discharge loop is opened or turn-offed to described current detecting chip controls discharge controller, to carry out putting protection or overcurrent protection.
Wherein, described charge controller and discharge controller all have the switch mosfet pipe.
Preferably, described battery protecting plate comprises balanced control chip, and when the voltage of arbitrary monomer electricity core surpassed balanced starting resistor, described balanced control chip was opened corresponding equalization channel to this electricity core discharge.
Further preferably, described balanced control chip has voltage checking chip and switch mosfet pipe.
Preferably, described high-capacity lithium battery bag also comprises charging fuse, temperature control charge switch and discharge fuse.
Preferably, described high-capacity lithium battery bag also comprises the electric weight display lamp.
Lithium battery bag of the present utility model adopts the high-capacity lithium battery group; thereby have little, in light weight, the light portable of volume, Gao Rongdian, high-energy-density, high efficiency, high bearing capacity, have extended cycle life, advantages such as self-discharge rate is low, memory-less effect, pollution-free and excellent constant pressure source performance; pass through battery protecting plate; effectively prevented to overcharge, cross put, the generation of unfavorable conditions such as overcurrent, monomer electricity core overtension; significantly improve lithium battery bag quality, had stable performance, long advantage of life-span.
Description of drawings
Fig. 1 is the combining structure schematic diagram of the high-capacity lithium battery bag of the utility model embodiment;
Fig. 2 is the circuit diagram of the high-capacity lithium battery bag of the utility model embodiment;
Fig. 3 is the battery protecting plate schematic diagram of the high-capacity lithium battery bag of the utility model embodiment.
Embodiment
By describing technology contents of the present utility model, structural feature in detail, realized purpose and effect, give explanation below in conjunction with embodiment and conjunction with figs. are detailed.
Fig. 1 is the combining structure schematic diagram of the high-capacity lithium battery bag of the utility model embodiment.As shown in Figure 1, described high-capacity lithium battery bag has separable power brick loam cake A and power brick lower cover B, and the two forms the shell of lithium battery bag.The circuit structure of the enclosure shown in Fig. 1 comprises: the monomer electricity core by several lithium batteries is connected in series lithium battery group 1, battery protecting plate 2, female plug 3a, 3b and male plug 4a, the 4b that forms, and the electric weight display lamp 5 that is used to show power brick dump energy state.
Fig. 2 is the circuit diagram of the high-capacity lithium battery bag of the utility model embodiment.Wherein, lithium battery group 1 is in series by ten joint lithium battery electric cores, thereby has increased the whole volume of lithium battery bag, has prolonged its service time.
Battery protecting plate 2 is connected to the electrode (being negative pole) of lithium battery group 1 by input 201 in Fig. 2, and is connected respectively to female plug 3a and 3b by charging end 202 and discharge end 203.Battery protecting plate 2 connects lithium battery group 1 central each by electric core sample port 204 and saves independent electric core, and the voltage of the core that respectively economizes on electricity in the middle of the sampling lithium battery group 1, when the overtension of any economize on electricity core wherein, start over-charge protective, cut off the charge circuit of lithium battery bag, perhaps when the brownout of any economize on electricity core, started and put protection, cut off the discharge loop of lithium battery bag; And described battery protecting plate 2 also has equalization function, starts equalization function when the voltage of any one electric core surpasses balanced starting resistor, and the electric core high to voltage discharges, thereby the voltage that guarantees all electric cores keeps basically identical; Described battery protecting plate 2 also has overcurrent protection function, surpasses certain limit when discharging current overcurrent and overcurrent time, then starts overcurrent protection, turn-offs discharge loop, to prevent the influence of heavy-current discharge to battery performance.
Female plug 3a and male plug 4a constitute the charging inlet of lithium battery bag, are used to connect external charger, and lithium battery group 1 is charged.Female plug 3b and male plug 4b constitute the discharge interface, connect external equipment, and provide electric energy for external equipment.
Electric weight display lamp 5 is used to show power brick dump energy state.
Charge circuit has charging fuse 6, and its rated current is 5A, melts 86 ± 5 degrees centigrade of disconnected temperature; Also has temperature control charge switch 7, rated current 5A, 70 ± 5 degrees centigrade of control temperature.Discharge loop has discharge fuse 8, its rated current 40A.These safety components prevent that the charge and discharge electric current is excessive or temperature is too high, the safety of protection lithium battery bag.
As indicated above, battery protecting plate 2 has: (1) over-charge protective function; (2) put defencive function excessively; (3) overcurrent protection function; (4) equalization function.Describe the 26S Proteasome Structure and Function of battery protecting plate in detail below in conjunction with Fig. 3.
Among Fig. 3, constitute lithium battery group 1, and a utmost point of lithium battery group 1 output (being negative pole output among Fig. 3) is connected to the input 201 of battery protecting plate 2 by the independent lithium battery electric core series connection of ten joints.Battery protecting plate 2 is by the independent electric core of each joint in the middle of one group of electricity core sample port, the 204 connection lithium battery groups 1; and, be used to guarantee that the voltage of each monomer electricity core is in normal range (NR) by the magnitude of voltage that respectively saves monomer electricity core in the middle of the electric core voltage checking chip 205 sample detecting lithium battery groups 1.The voltage that detects any joint monomer electricity core in the core of finding respectively to economize on electricity when electric core voltage checking chip 205 is higher than the overcharged voltage threshold value and (cuts off charge controller 206 4.25 ± 0.025V) time immediately; thereby the charge circuit between the charging end 202 of cut-out input 201 and battery protecting plate 2; stop charging this moment, be lower than until the voltage of all monomers electricity cores and charge normal threshold value (4.15 ± 0.050V) electric core voltage checking chip 205 are just controlled charge controller 206 and reopened lithium battery group 1.Under the state that overcharges, discharge loop still can regular picture.Similar, when electric core voltage checking chip 205 finds that the voltage of any economize on electricity core in the core that respectively economizes on electricity of series connection is lower than overdischarge and presses threshold value (to control the discharge loop that discharge controller 207 disconnects between inputs 201 and the discharge end 203 2.8 ± 0.080V) time immediately, stop the discharge of lithium battery group 1, all be higher than the regular picture threshold value until the voltage of all monomers electricity cores and (open discharge controller 207 3.0 ± 0.100V) time more again.Crossing under the state of putting, charge circuit then still can charge.Battery protecting plate 2 also comprises current detecting chip 208; it obtains discharging current from discharge loop; and when discharging current surpasses discharge overcurrent threshold value (22+4A-22-2A); and the overcurrent time surpasses special time length (2S); then start overcurrent protection; stop discharge thereby turn-off discharge controller 207, prevent that heavy-current discharge from exerting an influence to the performance of lithium battery group 1.Here, described charge controller 206 and discharge controller 207 all have the switch mosfet pipe, thereby open/turn-off charging and discharge loop.
Described battery protecting plate 2 further has equalization function.The balanced control chip 209a-209g of serial connection between any two monomer electricity cores that are one another in series of lithium battery group 1, described balanced control chip 209a-209g has voltage checking chip and switch mosfet pipe, constitutes the equalization channel between the described monomer electricity core.The voltage of any one monomer electricity core surpasses balanced starting resistor (4.18 ± 0.025V) time in detecting lithium battery group 1, correspondingly voltage checking chip is opened the switch mosfet pipe, thereby open equalization channel, the electric core high to voltage discharges, and so just can guarantee that the voltage of all electric cores keeps basically identical.Here, balanced starting resistor is higher than and describedly charges normal threshold value and be lower than the overcharged voltage threshold value, thereby to each electric core voltage of balance, avoid monomer electricity core overtension to play positive role.
Lithium battery bag of the present utility model adopts the high-capacity lithium battery group; thereby have little, in light weight, the light portable of volume, Gao Rongdian, high-energy-density, high efficiency, high bearing capacity, have extended cycle life, advantages such as self-discharge rate is low, memory-less effect, pollution-free and excellent constant pressure source performance; pass through battery protecting plate; effectively prevented to overcharge, cross put, the generation of unfavorable conditions such as overcurrent, monomer electricity core overtension; significantly improve lithium battery bag quality, had stable performance, long advantage of life-span.
The above only is embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to be done; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.
Claims (10)
1. high-capacity lithium battery bag; has the lithium battery group (1) that is in series by several monomer electricity cores; by female plug (3a; 3b) and male plug (4a; 4b) charging inlet of Zu Chenging and discharge interface; it is characterized in that also having battery protecting plate (2), be used for to lithium battery group (1) overcharge, cross put, overcurrent protection and electric core electric voltage equalization.
2. high-capacity lithium battery bag according to claim 1; it is characterized in that; described battery protecting plate (2) comprises electric core voltage checking chip (205); the lithium battery group (1) that is used for sampling respectively saves the voltage of monomer electricity core, and according to the voltage starting over-charge protective of arbitrary electric core wherein or cross and put protection.
3. high-capacity lithium battery bag according to claim 2; it is characterized in that: described battery protecting plate (2) comprises charge controller (206) and discharge controller (207); be used under the control of described electric core voltage checking chip (205), opening or turn-off charge circuit and discharge loop, put protection to overcharge and to cross.
4. high-capacity lithium battery bag according to claim 1 is characterized in that, described battery protecting plate (2) comprises current detecting chip (208), is used to obtain discharging current, and starts overcurrent protection when described discharging current overcurrent surpasses special time length.
5. high-capacity lithium battery bag according to claim 4 is characterized in that, discharge loop is opened or turn-offed to described current detecting chip (208) control discharge controller (207), to carry out putting protection or overcurrent protection.
6. according to claim 3 or 5 described high-capacity lithium battery bags, it is characterized in that described charge controller (206) and discharge controller (207) all have the switch mosfet pipe.
7. high-capacity lithium battery bag according to claim 1; it is characterized in that; described battery protecting plate (2) also comprises balanced control chip (209a-209g); when the voltage of arbitrary monomer electricity core surpassed balanced starting resistor, described balanced control chip (209a-209g) was opened corresponding equalization channel to this electricity core discharge.
8. high-capacity lithium battery bag according to claim 7 is characterized in that, described balanced control chip (209a-209g) has voltage checking chip and switch mosfet pipe.
9. high-capacity lithium battery bag according to claim 1 is characterized in that, described high-capacity lithium battery bag also comprises charging fuse (6), temperature control charge switch (7) and discharge fuse (8).
10. high-capacity lithium battery bag according to claim 1 is characterized in that, described high-capacity lithium battery bag also comprises electric weight display lamp (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201304932U CN202042919U (en) | 2011-04-28 | 2011-04-28 | High-capacity lithium battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201304932U CN202042919U (en) | 2011-04-28 | 2011-04-28 | High-capacity lithium battery pack |
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| Publication Number | Publication Date |
|---|---|
| CN202042919U true CN202042919U (en) | 2011-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011201304932U Expired - Lifetime CN202042919U (en) | 2011-04-28 | 2011-04-28 | High-capacity lithium battery pack |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103178566A (en) * | 2011-12-26 | 2013-06-26 | 广州丰江电池新技术股份有限公司 | Uncharged state maintenance method and maintenance instrument of lithium battery pack unbalance |
| CN103294151A (en) * | 2013-06-26 | 2013-09-11 | 庄景阳 | Laptop power supply intelligent manager |
| CN108845265A (en) * | 2018-06-22 | 2018-11-20 | 广州极飞科技有限公司 | Battery modules and voltage detection method, electrical equipment based on it |
| CN112098862A (en) * | 2020-08-04 | 2020-12-18 | 中汽研汽车检验中心（天津）有限公司 | Method for testing and evaluating overdischarge tolerance of lithium ion battery monomer |
-
2011
- 2011-04-28 CN CN2011201304932U patent/CN202042919U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103178566A (en) * | 2011-12-26 | 2013-06-26 | 广州丰江电池新技术股份有限公司 | Uncharged state maintenance method and maintenance instrument of lithium battery pack unbalance |
| CN103294151A (en) * | 2013-06-26 | 2013-09-11 | 庄景阳 | Laptop power supply intelligent manager |
| CN103294151B (en) * | 2013-06-26 | 2015-06-24 | 庄景阳 | Laptop power supply intelligent manager |
| CN108845265A (en) * | 2018-06-22 | 2018-11-20 | 广州极飞科技有限公司 | Battery modules and voltage detection method, electrical equipment based on it |
| CN112098862A (en) * | 2020-08-04 | 2020-12-18 | 中汽研汽车检验中心（天津）有限公司 | Method for testing and evaluating overdischarge tolerance of lithium ion battery monomer |
| CN112098862B (en) * | 2020-08-04 | 2023-03-28 | 中汽研汽车检验中心（天津）有限公司 | Method for testing and evaluating overdischarge tolerance of lithium ion battery monomer |
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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 |
Owner name: CHANGZHOU GLOBE CO., LTD. Free format text: FORMER NAME: CHANGZHOU GLOBE TOOLS CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 213023 Jiangsu province Changzhou Xingang Tower Road Economic Development Zone No. 65 Patentee after: Changsha Globe Tools Co., Ltd. Address before: 213000 Jiangsu province Changzhou City Star Clock Tower Development Zone, Road No. 65-3 Patentee before: Changzhou Globe Tools Co., Ltd. |
|
| CP03 | Change of name, title or address |
Address after: No.65-1 Xinggang Road, Zhonglou Economic Development Zone, Changzhou City, Jiangsu Province Patentee after: Gelibo (Jiangsu) Co., Ltd Address before: 213023 Jiangsu province Changzhou Xingang Tower Road Economic Development Zone No. 65 Patentee before: CHANGZHOU GLOBE Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111116 |
|
| CX01 | Expiry of patent term |