CN201393058Y - Charge-discharge equalizing protection module of rechargeable battery pack - Google Patents
Charge-discharge equalizing protection module of rechargeable battery pack Download PDFInfo
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- CN201393058Y CN201393058Y CN200920067724U CN200920067724U CN201393058Y CN 201393058 Y CN201393058 Y CN 201393058Y CN 200920067724 U CN200920067724 U CN 200920067724U CN 200920067724 U CN200920067724 U CN 200920067724U CN 201393058 Y CN201393058 Y CN 201393058Y
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Abstract
The utility model relates to a charge-discharge equalizing protection module of a rechargeable battery pack, which is connected in series with lithium ion or lithium iron phosphate power and suitable for 10 pieces of 36V electric vehicles to use. The charge-discharge balance protection module of the rechargeable battery pack adopts three lithium battery management protection chips S8204 B cascade, and comprises a load-bearing capacity control unit, a charge equalizing protection unit, a current consumption control unit and two groups of power field-effect transistors; the load-bearing capacity control unit is connected in series with the two groups of the power field-effect transistors; the charge equalizing protection unit is connected in parallel with the cascaded lithium battery management protection chip groups; and the two groups of the power field-effect transistors are N-channel low internal resistance field-effect transistors, and each group of the field-effect transistors is formed by the parallel connection of a single or a plurality of field-effect transistors. The charge-discharge equalizing protection module of the rechargeable battery pack has the advantages that the working efficiency of the battery pack is greatly increased as each battery can be guaranteed to achieve the full state under the charge equalizing protection control; the load-bearing capacity control mode effectively solves the problem of high current release; and the charge-discharge equalizing protection module of the rechargeable battery pack provides a simple and practical charge-discharge protection scheme for a battery pack of more than five pieces of batteries.
Description
Technical field
The utility model relates to a kind of 10 joint 36V electric vehicle cascaded lithium ion or LiFePO4 power rechargeable battery pack charge and discharge balancing protection modules that are suitable for, and belongs to the battery technology field.
Background technology
21st century is the epoch of " epoch are called environmental protection ", not only requires people to pay attention to energy savings, the more important thing is to require people to pay attention to living environment and environmental protection more, to realize the sustainable development of society.CNPC's resource is relatively poorer, and the exhaust emission of fuel oil and tail gas is again the primary pollution source of following big and medium-sized cities air pollution.Motive force of development source is undoubtedly the inexorable trend of future development for this reason, also is the demand that meets the environmental protection revolution, especially a kind of instrument of social sustainable development.The electric motor car of main flow in the market, its power source generally is made of plumbic acid or Ni-MH battery group, lead-acid battery, Ni-MH battery circulation physical life is short, volume is big, therefore all heavier, there is security hidden trouble in lead-acid battery simultaneously, the life security that lead-acid battery is blasted under strong bump easily to the consumer constitutes a threat to, contain a large amount of lead in the lead-acid battery, after its waste treatment if deal with improperly, will be to the environment structure secondary pollution, there is memory effect in Ni-MH battery, impels the practical efficient of battery to reduce greatly.Lithium ion, ferric phosphate lithium cell are that a kind of voltage height, volume are little, in light weight, memory-less effect, recycle long and free of contamination green energy resource of life-span, but if also there are potential safety hazards such as fragile, blast in (overcharge, discharge, short circuit, overcurrent) improper use in practical process for lithium ion or ferric phosphate lithium cell, and therefore the management to battery pack has proposed strict requirement.Lithium ion that general 4 joints are following or ferric phosphate lithium cell group all adopt special battery management protection chip to do protection module; 5 joints above (containing 5 joints) lithium ion or ferric phosphate lithium cell group adopt the mode of battery management protection chip series connection to form; battery pack is aging because of indivedual cells in the process of using like this; cause internal resistance to raise; impel battery pack in charging process, to reach full state in advance because of indivedual cells; batteries charging finishes; cause the battery pack utilization ratio not high; therefore need to increase the service efficiency that the charge balancing protection circuit improves battery pack; each cell all has an independently charge balancing protection system; under the situation that individual cell is full of in advance; the charge balancing protection system is opened the field effect transistor of being controlled makes charging current jump to next cell continuation charging automatically; till being full of; the shortcoming of this mode is to impel battery protection modular structure complexity, and cost of goods manufactured increases.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of low-power consumption, cascaded lithium ion or ferric phosphate lithium cell group charge and discharge balancing protection scheme that antijamming capability is strong, impel battery pack in use utilization ratio reach the highest.
The technical solution of the utility model is achieved in that a kind of rechargeable battery pack charge and discharge balancing protection module, adopts n lithium battery administrative protection chip S8204B cascade, is connected respectively by two groups of power field effect pipes to discharge and recharge control end; It also comprises load capacity control unit and charge balancing protected location; Described load capacity control unit is connected with two groups of power field effect pipes; Described charge balancing protected location is in parallel with the lithium battery administrative protection chipset of cascade; Described two groups of field effect transistor are low internal resistance field effect transistor of N raceway groove, and every group by single or multiple field effect transistor and connect and form.
Described charge balancing protected location is made up of maximum 4n single-unit lithium battery protection circuits; Each single-unit lithium battery protection circuit is made up of administrative protection chip, field effect transistor and resistance, with pairing charged lithium cells and connect.
Described load capacity control unit is made up of the high-power SMD precision resistance of one group of parallel connection.
N described in the such scheme is 3, and Chong Dian lithium battery is 10 simultaneously.
The beneficial effects of the utility model are: circuit is simpler, than being easier to realize electrical characteristic preferably, because there is not the cell number quantitative limitation in S8204B, can be the above battery pack of 5 joints a simple and practical charge and discharge protecting scheme is provided.Under charge balancing protection control, guarantee that every batteries can both reach full state, improve the operating efficiency of battery pack greatly.Adopting power field effect pipe and each parallel way of voltage monitoring precision resistance to solve big electric current discharges.
Description of drawings
Fig. 1 is a circuit block diagram of the present utility model.
Fig. 2 is a charge balancing protected location circuit diagram of the present utility model.
Fig. 3 is load capacity control unit circuit figure of the present utility model.
Fig. 4 is the field effect transistor circuit diagram that discharges and recharges of the present utility model.
Fig. 5 is a voltage detection switch circuit diagram of the present utility model.
Fig. 6 is an electrical schematic diagram of the present utility model.
Embodiment
The circuit block diagram of the utility model rechargeable battery pack charge and discharge balancing protection module as shown in Figure 1, it comprises three lithium battery administrative protection chip S8204B, is numbered IC1, IC2, IC3; Administrative protection chip filter capacitor is numbered C1, C2, C3; Discharge and recharge each one group of power field effect pipe FET, be numbered Qa, Qb and field effect transistor fin; By the load capacity control unit that precision resistance is formed, numbering RS; External capacitor is provided with overcurrent and detects control end time of delay, is numbered C4, C5, C6; Reduce the voltage detection switch circuit of the current sinking control that battery causes because of overdischarge, be numbered Mn; The charge balancing protected location is numbered Bn; Printed circuit board (PCB) and waterproof material etc.
At first three 3～4 are saved the charging of li-ion cell protection chip, discharge control FET terminal and discharge and recharge splicing ear and be cascaded, when charger during to battery pack overcharge, cause inner pressure of battery to raise for preventing that temperature from rising, need to stop charged state, activate overcharge protection by detecting cell voltage this moment, stops charging; When monitoring voltage is lower than battery over-discharge protection voltage detecting point, activate deep-discharge protection, stop discharge, and battery is kept the standby mode of low quiescent current.Battery activates excess current protective function under the situation of overcurrent and short circuit, stop discharge.Battery set charge/discharge, overcurrent, short-circuit protection function mainly are to rely on protection chip IC1, COP, the DOP of IC2, IC3, CTLC, CTLD terminal to control the switching of field effect transistor.(general electric motor car starts can produce immediate current 20～30A) when the loop big electric current occurs and discharges, if reaching requirement, the battery pack load capacity will not cause electric motor car to be difficult to start, can realize by the size of regulating precision resistance, equally also can regulate external capacitor C4, C5, C6 is provided with overcurrent and detects time of delay.
Battery pack may produce indivedual internal resistance of single cell and raise in the practical process of circulation; cause battery pack in charging process, to produce the charging imbalance; utilization ratio reduces greatly; so need in the battery set management protection module, increase charge balancing protective circuit (as Fig. 2); it increases an additives for overcharge protection circuit (B101 at every batteries two ends; Q101; R101 etc. form successively); administrative protection chip B101; B201 ... B110 (S8241) monitors the charged state of each battery; when if detection voltage is higher than overcharged voltage protection value; automatically open corresponding MOSFET (Q101; Q201 ... Q110); in the assurance battery pack all are battery balanced as one man charges, till all batteries are full of.
Load capacity control unit shown in the accompanying drawing 3 by a plurality of high-power SMD precision resistances and connect and form, by the VSS-VINI voltage detection terminal of lithium battery administrative protection chip, is regulated the load capacity that resistance is controlled battery pack.
Voltage detection switch circuit shown in the accompanying drawing 4 is made up of 6 metal-oxide-semiconductor M1, M2, M3, M4, M5, M6, links to each other with the voltage detection terminal VMP of three li-ion cell protection chips respectively; When overdischarge appears in any battery in the battery pack, thereby can guarantee that lithium battery administrative protection chip IC 1, IC2, IC3 enter the current sinking that park mode reduces the battery pack protection module.
All elements all adopt surface mount elements except that power field effect pipe (Qa, Qb); pcb board adopts epoxy resin as basic; and on lithium battery balance protection module product, spraying marine glue, Fig. 6 is the electrical schematic diagram of the utility model rechargeable battery pack charge and discharge balancing protection module.
Claims (4)
1, a kind of rechargeable battery pack charge and discharge balancing protection module, adopt 3 lithium battery administrative protection chip cascades, connected respectively by two groups of power field effect pipes and to discharge and recharge control end, it is characterized in that: it also comprises load capacity control unit and charge balancing protected location; Described load capacity control unit is connected with two groups of power field effect pipes; Described charge balancing protected location is in parallel with the lithium battery administrative protection chipset of cascade; Described two groups of field effect transistor are low internal resistance field effect transistor of N raceway groove, and every group by single or multiple field effect transistor and connect and form.
2, charge and discharge balancing protection module according to claim 1 is characterized in that: described charge balancing protected location is made up of maximum 12 single-unit lithium battery protection circuits; Each single-unit lithium battery protection circuit is made up of administrative protection chip, field effect transistor and resistance, with pairing charged lithium cells and connect.
3, charge and discharge balancing protection module according to claim 1 is characterized in that: described load capacity control unit is made up of the high-power SMD precision resistance of one group of parallel connection.
4, charge and discharge balancing protection module according to claim 2 is characterized in that: Chong Dian lithium battery is 10 simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920067724U CN201393058Y (en) | 2009-02-13 | 2009-02-13 | Charge-discharge equalizing protection module of rechargeable battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920067724U CN201393058Y (en) | 2009-02-13 | 2009-02-13 | Charge-discharge equalizing protection module of rechargeable battery pack |
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| Publication Number | Publication Date |
|---|---|
| CN201393058Y true CN201393058Y (en) | 2010-01-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200920067724U Expired - Lifetime CN201393058Y (en) | 2009-02-13 | 2009-02-13 | Charge-discharge equalizing protection module of rechargeable battery pack |
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| CN (1) | CN201393058Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101917126A (en) * | 2010-07-30 | 2010-12-15 | 浙江大学 | Voltage-equalizing and power-equalizing control method for multi-module cascade solid-state transformer |
| CN102881943A (en) * | 2012-09-25 | 2013-01-16 | 重庆永通信息工程实业有限公司 | Internal-combustion engine starting power supply |
| RU2474024C1 (en) * | 2011-11-28 | 2013-01-27 | Российская Федерация, От Имени Которой Выступает Министерство Промышленности И Торговли Российской Федерации | Device for protection of capacitance energy accumulator |
| CN103259253A (en) * | 2013-05-11 | 2013-08-21 | 无锡中星微电子有限公司 | Cascaded battery protection circuit and system thereof |
| CN103545563A (en) * | 2012-07-13 | 2014-01-29 | 中兴通讯股份有限公司 | Method and device for activating rechargeable battery |
| CN104319840A (en) * | 2014-10-27 | 2015-01-28 | 深圳市新国都技术股份有限公司 | Charging equalization circuit applied to lithium batteries |
| CN104701819A (en) * | 2013-12-10 | 2015-06-10 | 上海空间电源研究所 | Isolating protector based on high-precision high-integration lithium battery collecting system |
| CN110380470A (en) * | 2019-07-02 | 2019-10-25 | 佛山市实达科技有限公司 | Multiple batteries charge protector and cell apparatus |
-
2009
- 2009-02-13 CN CN200920067724U patent/CN201393058Y/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101917126A (en) * | 2010-07-30 | 2010-12-15 | 浙江大学 | Voltage-equalizing and power-equalizing control method for multi-module cascade solid-state transformer |
| CN101917126B (en) * | 2010-07-30 | 2012-08-15 | 浙江大学 | Voltage-equalizing and power-equalizing control method for multi-module cascade solid-state transformer |
| RU2474024C1 (en) * | 2011-11-28 | 2013-01-27 | Российская Федерация, От Имени Которой Выступает Министерство Промышленности И Торговли Российской Федерации | Device for protection of capacitance energy accumulator |
| CN103545563A (en) * | 2012-07-13 | 2014-01-29 | 中兴通讯股份有限公司 | Method and device for activating rechargeable battery |
| CN103545563B (en) * | 2012-07-13 | 2016-12-21 | 中兴通讯股份有限公司 | A kind of method and device of activating charge battery |
| CN102881943A (en) * | 2012-09-25 | 2013-01-16 | 重庆永通信息工程实业有限公司 | Internal-combustion engine starting power supply |
| CN103259253A (en) * | 2013-05-11 | 2013-08-21 | 无锡中星微电子有限公司 | Cascaded battery protection circuit and system thereof |
| CN103259253B (en) * | 2013-05-11 | 2015-12-02 | 无锡中星微电子有限公司 | The battery protecting circuit of cascade and system |
| CN104701819A (en) * | 2013-12-10 | 2015-06-10 | 上海空间电源研究所 | Isolating protector based on high-precision high-integration lithium battery collecting system |
| CN104701819B (en) * | 2013-12-10 | 2019-08-06 | 上海空间电源研究所 | A kind of isolating and protecting device based in the highly integrated lithium electricity acquisition system of high-precision |
| CN104319840A (en) * | 2014-10-27 | 2015-01-28 | 深圳市新国都技术股份有限公司 | Charging equalization circuit applied to lithium batteries |
| CN110380470A (en) * | 2019-07-02 | 2019-10-25 | 佛山市实达科技有限公司 | Multiple batteries charge protector and cell apparatus |
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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: SHANGHAI CHANGYUAN WAYON CIRCUIT PROTECTION CO., L Free format text: FORMER NAME: SHANGHAI CHANGYUAN WEIAN ELECTRONIC LINE PROTECTION CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Seven road 201202 Shanghai Shiwan No. 1001 Patentee after: Shanghai Changyuan Wayon Circuit Protection Co., Ltd. Address before: Seven road 201202 Shanghai Shiwan No. 1001 Patentee before: Shanghai Changyuan Wayon Circuit Protection Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100127 |