CN203205847U - Low-power lithium ion storage battery protection circuit for controlling high-power circuit - Google Patents
Low-power lithium ion storage battery protection circuit for controlling high-power circuit Download PDFInfo
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- CN203205847U CN203205847U CN 201320166178 CN201320166178U CN203205847U CN 203205847 U CN203205847 U CN 203205847U CN 201320166178 CN201320166178 CN 201320166178 CN 201320166178 U CN201320166178 U CN 201320166178U CN 203205847 U CN203205847 U CN 203205847U
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- power
- circuit
- storage battery
- contactor
- relay
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 27
- 239000004065 semiconductor Substances 0.000 claims description 31
- 230000001681 protective effect Effects 0.000 claims description 25
- 238000007599 discharging Methods 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000006378 damage Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 230000001459 mortal effect Effects 0.000 description 1
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a low-power lithium ion storage battery protection circuit for controlling a high-power circuit. The low-power lithium ion storage battery protection circuit comprises a storage battery protection circuit which is connected with a storage battery and is equipped with a charging MOS tube and a discharging MOS tube; and also a control switch which is driven by the discharging MOS tube and is used for controlling on and off states of a high-power load. The storage battery protection circuit drives a DC contactor or a relay to enable the load originally applied to the MOS tubes to be transferred, and the DC contactor or the relay is driven by the MOS tubes to serve as the control switch, so that working pressure of the MOS tubes is minimized, the MOS tubes no longer bears cutoff pressure in the high-power circuit, and only slight working current is needed to drive the DC contactor or the relay. Therefore, the working environment of the MOS tubes is greatly improved, the service life of the MOS tubes is prolonged, system costs are lowered, and a lithium ion storage battery system becomes safer and more reliable.
Description
Technical field
The utility model relates to a kind of large-scale lithium-ions battery administrative skill, relates in particular to a kind of small-power lithium-ions battery protective circuit of controlling high-power circuit.
Background technology
Lithium-ions battery need to have the protective circuit of specialty to come it is controlled when work.The parameters such as the charging voltage of single of major control or whole Battery pack, discharge voltage, temperature, electric current.In case battery-operated has arrived the halt that arranges, protective circuit is cut off the work loop automatically, and purpose is protected.Usually the electronic device that serves as cut-out switch in loop in protective circuit is that the transistor of metal-oxide semiconductor (MOS) (Metal-Oxide-Semiconductor) structure is called for short MOS transistor.Two kinds of forms are arranged usually: the battery terminal negative mode of 1, being controlled by the N-type metal-oxide-semiconductor.2, by the battery positive voltage mode of P type metal-oxide-semiconductor control or by the boost battery positive voltage mode of the N-type metal-oxide-semiconductor control in the situation of circuit.Because the current capacity of metal-oxide-semiconductor is limited, the use in the high-power protection circuit often needs the realization in parallel of a plurality of metal-oxide-semiconductors.Amount of heat can be assembled in circuit metal-oxide-semiconductor surface when large current work like this, so just is easy to cause the metal-oxide-semiconductor damage or reduces useful life, in case protective circuit lost efficacy, will cause to battery system the mortal injury of unrepairable.
Use the unreliability of common baffle for fear of high-power circuit, in the situation that budget fund allows usually to adopt the large-sized battery management system.The cost of large-sized battery management system is 10 times～50 times of common baffle cost.
The utility model content
The purpose of this utility model is to provide a kind of small-power lithium-ions battery protective circuit of controlling high-power circuit; improve the operational environment of the metal-oxide-semiconductor of secondary battery protection circuit with realization; improve its useful life, reduce system cost, make the lithium-ions battery system more safe and reliable.
For achieving the above object, the utility model provides a kind of small-power lithium-ions battery protective circuit of controlling high-power circuit, comprising:
Storage battery;
With the secondary battery protection circuit that described storage battery links to each other, it has charging metal-oxide-semiconductor and discharge metal-oxide-semiconductor;
Also comprise a control switch that driven by described discharge metal-oxide-semiconductor, it is used for the break-make of control high power load.
The small-power lithium-ions battery protective circuit of control high-power circuit of the present utility model, described control switch is D.C. contactor or relay.
The small-power lithium-ions battery protective circuit of control high-power circuit of the present utility model comprises that also one is serially connected with the hand control switch on the output loop of described secondary battery protection circuit.
The small-power lithium-ions battery protective circuit of control high-power circuit of the present utility model; the two ends of described high power load respectively with the corresponding connection of positive pole, negative pole of described storage battery; link to each other with the positive pole of described storage battery behind the solenoid that the drain electrode of described discharge metal-oxide-semiconductor is connected in series described D.C. contactor or relay successively and the described hand control switch, the switch contact of described D.C. contactor or relay is serially connected with on the load circuit of described high power load place.
The small-power lithium-ions battery protective circuit of control high-power circuit of the present utility model, the operating voltage of the solenoid of described D.C. contactor or relay is 8V～90V, and its operating current is not more than 5A.
The small-power lithium-ions battery protective circuit of control high-power circuit of the present utility model, the current capacity of the contact of described D.C. contactor or relay are tens A～hundreds of A, and the break-make withstand voltage of its contact is not less than 100V.
In the small-power lithium-ions battery protective circuit of control high-power circuit of the present utility model; secondary battery protection circuit drives D.C. contactor or relay can make the load that originally is added on its metal-oxide-semiconductor shift; D.C. contactor or relay are driven by metal-oxide-semiconductor and are used as control switch; thereby reduced the operating pressure of metal-oxide-semiconductor; metal-oxide-semiconductor no longer bears cutoff pressure in high-power circuit; only need very little operating current to drive D.C. contactor or relay; thereby improved greatly the operational environment of metal-oxide-semiconductor; improved its useful life; reduced system cost, made the lithium-ions battery system more safe and reliable.
Description of drawings
Fig. 1 is the circuit theory diagrams of the small-power lithium-ions battery protective circuit of control high-power circuit of the present utility model.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described in detail:
With reference to shown in Figure 1, the small-power lithium-ions battery protective circuit of the control high-power circuit of the present embodiment comprises storage battery (being generally batteries); The secondary battery protection circuit that links to each other with storage battery, it has charging metal-oxide-semiconductor Q1 and discharge metal-oxide-semiconductor Q2; Also comprise the control switch that metal-oxide-semiconductor Q2 drives that discharged, it is used for the break-make of control high power load RL, and this control switch is preferably D.C. contactor or relay K; In addition, the small-power lithium-ions battery protective circuit of the control high-power circuit of the present embodiment comprises that also one is serially connected with the hand control switch S on the output loop of secondary battery protection circuit.Wherein, the two ends of high power load RL respectively with the corresponding connection of positive pole, negative pole of storage battery, link to each other with the positive pole of storage battery behind the solenoid that the drain electrode of discharge metal-oxide-semiconductor Q2 is connected in series D.C. contactor or relay K successively and the hand control switch S, the switch contact of D.C. contactor or relay K is serially connected with on the load circuit of high power load RL place.
Wherein, the operating voltage of the solenoid of D.C. contactor or relay K is usually at 8V～90V, and its operating current is usually below 5A.The contact current capacity of D.C. contactor or relay K can not wait to the hundreds of ampere by tens amperes, specifically selects different model according to the power of load, and its contact break-make is withstand voltage usually more than 100V.Because the storage battery stagnation pressure is not high, can satisfy the use of capacitive load yet.
Wherein, secondary battery protection circuit gathers the information such as every battery tension, temperature, manages the break-make of charging metal-oxide-semiconductor Q1 and discharge metal-oxide-semiconductor Q2 according to the information that collects.The use in the situation that storage battery need to discharge, secondary battery protection circuit gather the information such as the voltage, temperature of each storage battery to be judged, if automatically open discharge metal-oxide-semiconductor Q2 just meet discharging condition.Closed hand control switch S, the solenoid of D.C. contactor or relay K is just switched on, the turn on-switch contact, high power load RL just can use accumulator electric-quantity.When battery tension reaches minimum lower in limited time or during temperature protection; protective circuit just automatically shuts down discharge metal-oxide-semiconductor Q2; this moment, the solenoid of D.C. contactor or relay K just cut off the power supply, and switch contact also disconnects, and high power load RL place load circuit and storage battery disconnect.Thereby realized with common protective circuit control high power load.
Above embodiment is described preferred implementation of the present utility model; be not that scope of the present utility model is limited; under the prerequisite that does not break away from the utility model design spirit; various distortion and improvement that the common engineers and technicians in this area make the technical solution of the utility model all should fall in the definite protection range of claims of the present utility model.
Claims (6)
1. small-power lithium-ions battery protective circuit of controlling high-power circuit comprises:
Storage battery;
With the secondary battery protection circuit that described storage battery links to each other, it has charging metal-oxide-semiconductor (Q1) and discharge metal-oxide-semiconductor (Q2);
It is characterized in that, also comprise a control switch that driven by described discharge metal-oxide-semiconductor (Q2), it is used for the break-make of control high power load (RL).
2. the small-power lithium-ions battery protective circuit of control high-power circuit according to claim 1 is characterized in that, described control switch is D.C. contactor or relay (K).
3. the small-power lithium-ions battery protective circuit of control high-power circuit according to claim 2 is characterized in that, comprises that also one is serially connected with the hand control switch (S) on the output loop of described secondary battery protection circuit.
4. the small-power lithium-ions battery protective circuit of control high-power circuit according to claim 3; it is characterized in that; the two ends of described high power load (RL) respectively with the corresponding connection of positive pole, negative pole of described storage battery; the solenoid that the drain electrode of described discharge metal-oxide-semiconductor (Q2) is connected in series described D.C. contactor or relay (K) successively links to each other with the positive pole of described storage battery with described hand control switch (S) is rear, and the switch contact of described D.C. contactor or relay (K) is serially connected with on the load circuit of described high power load (RL) place.
5. the small-power lithium-ions battery protective circuit of control high-power circuit according to claim 4 is characterized in that, the operating voltage of the solenoid of described D.C. contactor or relay (K) is 8V～90V, and its operating current is not more than 5A.
6. the small-power lithium-ions battery protective circuit of control high-power circuit according to claim 5; it is characterized in that; the current capacity of the contact of described D.C. contactor or relay (K) is tens A～hundreds of A, and the break-make withstand voltage of its contact is not less than 100V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320166178 CN203205847U (en) | 2013-04-03 | 2013-04-03 | Low-power lithium ion storage battery protection circuit for controlling high-power circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320166178 CN203205847U (en) | 2013-04-03 | 2013-04-03 | Low-power lithium ion storage battery protection circuit for controlling high-power circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203205847U true CN203205847U (en) | 2013-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320166178 Expired - Fee Related CN203205847U (en) | 2013-04-03 | 2013-04-03 | Low-power lithium ion storage battery protection circuit for controlling high-power circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN203205847U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106026244A (en) * | 2016-06-12 | 2016-10-12 | 深圳市德朗能电子科技有限公司 | Lithium ion battery charge and discharge protective circuit and lithium ion battery system |
-
2013
- 2013-04-03 CN CN 201320166178 patent/CN203205847U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106026244A (en) * | 2016-06-12 | 2016-10-12 | 深圳市德朗能电子科技有限公司 | Lithium ion battery charge and discharge protective circuit and lithium ion battery system |
| CN106026244B (en) * | 2016-06-12 | 2019-03-12 | 深圳市德朗能电子科技有限公司 | Lithium ion battery charge-discharge protection circuit and lithium-ion battery systems |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20190729 Granted publication date: 20130918 |
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| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20230403 Granted publication date: 20130918 |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130918 |