CN205901393U - Battery management device and battery management system - Google Patents
Battery management device and battery management system Download PDFInfo
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- CN205901393U CN205901393U CN201620887683.1U CN201620887683U CN205901393U CN 205901393 U CN205901393 U CN 205901393U CN 201620887683 U CN201620887683 U CN 201620887683U CN 205901393 U CN205901393 U CN 205901393U
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- battery
- battery management
- breaker
- parallel circuit
- management system
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Abstract
The utility model provides a battery management device and battery management system, the battery management device includes: parallel circuit, battery monomer and the control of parallelly connected power resistor formation each other more than two parallel circuit with the circuit breaker of battery monomer break -make, the first end of circuit breaker parallel circuit with the free positive pole of battery is established ties in proper order, the second of circuit breaker end with the free negative pole of battery is established ties. The utility model discloses a when satisfying the equilibrium condition, the battery monomer discharges through two above power resistors to make radiating power resistor the phenomenon of high temperature can not appear, make the battery monomer obtain passive balanced the time, makes safelyr to the free use of battery, can not influence the stable work of control panel, also can not cause the hot unstability of electric core or result in the burning of battery package inside.
Description
Technical field
The utility model is related to field of batteries, more particularly, to a kind of cell managing device and battery management system.
Background technology
At present, battery technology has the development advanced by leaps and bounds, but is also not enough to solve the conforming problem of monomer, particularly
It is applied to the battery system on new-energy automobile, when the battery of strings up to a hundred is used in series, monomer uniformity just seems particular importance.
Monomer uniformity not only affects the accurate estimation to battery status for the battery management system, and also contributes to whole battery bag
Life-span.In order to solve this problem, battery balanced scheme is essential, and equilibrium mainly has a two ways: active equalization and passive
Equilibrium.The circuit of active equalization scheme is complicated, stability is poor, high cost and industrialization process are slow；Passive type equalization scheme is just
On the contrary, it is balanced way popular at present.
But there is single high-power resistance radiating in equalizing circuit in passive equalization scheme, affect stablizing of control panel
Work, may cause the thermal run away of battery core or lead to the burning within battery bag.If solving bad, can be to actual engineering
Application brings very burden.
Therefore, it is necessary to improve defect set forth above.
Utility model content
Based on problem above, the utility model proposes a kind of cell managing device and battery management system, by when satisfaction
During equilibrium condition, battery cell is discharged by two or more power resistor, so that the power resistor of radiating is not in temperature
Too high phenomenon, while so that battery cell is passively equalized, makes to battery cell using safer, does not interfere with control
The steady operation of making sheet, also will not cause the thermal run away of battery core or lead to the burning within battery bag.
On the one hand, the utility model proposes a kind of cell managing device, comprising:
Parallel circuit that two or more power resistor parallel with one another is formed, battery cell and control described parallel circuit with
The breaker of described battery cell break-make；
The positive pole of the first end of described breaker, described parallel circuit and described battery cell is sequentially connected in series；
Connected with the negative pole of described battery cell in second end of described breaker.
Additionally, described breaker switchs for mosfet.
Additionally, power resistor described in two or more is uniformly distributed in described parallel circuit.
On the other hand, the utility model proposes a kind of battery management system, electric including two or more power parallel with one another
Parallel circuit, battery cell and the breaker controlling described parallel circuit and described battery cell break-make that resistance is formed；
The positive pole of the first end of described breaker, described parallel circuit and described battery cell is sequentially connected in series；
Connected with the negative pole of described battery cell in second end of described breaker；
Also include controlling the battery management controller of described breaker break-make.
Additionally, after described battery management controller is concatenated with load resistance, being connected with described circuit breaker electric.
Additionally, described battery management system includes two or more described cell managing device parallel with one another.
Additionally, described breaker switchs for mosfet.
Additionally, power resistor described in two or more is uniformly distributed in described parallel circuit.
By adopting technique scheme, have the advantages that
By when meeting equilibrium condition, battery cell is discharged by two or more power resistor, so that the work(of radiating
Rate resistance is not in the too high phenomenon of temperature, while so that battery cell is passively equalized, makes the use to battery cell
Safer, do not interfere with the steady operation of control panel, will not cause the thermal run away of battery core yet or lead within battery bag
Burning.
Brief description
Fig. 1 is the module map of the battery management system according to one embodiment of the utility model.
Specific embodiment
Below in conjunction with specific embodiments and accompanying drawing, the utility model is further described in detail.It is only intended in detail
Carefully illustrate specific embodiments of the present utility model, any restriction, protection of the present utility model are not produced to the utility model
Scope is defined by claims.
With reference to Fig. 1, the utility model proposes a kind of cell managing device, comprising:
Parallel circuit 10, the battery cell 20 and control electricity in parallel that two or more power resistor parallel with one another 101 is formed
Road 10 and the breaker 30 of battery cell 20 break-make；
The positive pole 201 of the first end 301, parallel circuit 10 and battery cell 20 of breaker 30 is sequentially connected in series；
Connected with the negative pole 202 of battery cell 20 in second end 302 of breaker 30.
When meeting equilibrium condition, breaker 30 is made to close, now whole cell managing device is in channel status, power
Resistance 101 consumes electric energy, and battery cell 20 is discharged by power resistor 101.Alternatively, power resistor 101 select low power
Power resistor, because power is little, so will not form localized hyperthermia's point during radiating.
When equilibrium condition is unsatisfactory for, breaker 30 is made to disconnect, now whole cell managing device is in off state, work(
Rate resistance 101 no longer consumes electric energy, and battery cell 20 stops electric discharge.
Equilibrium condition is made up of following condition, needs to meet some or all of condition in following condition, Cai Nengman
Sufficient equilibrium condition.
1) battery system fault-free；
2) the 12v power supply of battery cell is in setting range；
3) battery cell temperature is in setting range；
4) battery cell voltage is in setting range；
5) battery system is in charge or discharge pattern；
6) battery cell capacity exceedes mean value；
7) battery cell equilibrium flag set.
By when meeting equilibrium condition, battery cell 20 is discharged by two or more power resistor 101, so that radiating
Power resistor 101 be not in the too high phenomenon of temperature, while so that battery cell 20 is passively equalized, make to battery list
The use of body 20 is safer, does not interfere with the steady operation of control panel, also will not cause the thermal run away of battery core or lead to electricity
Burning within the bag of pond.
In one of which embodiment, breaker 30 switchs for mosfet.Switch adopts metal-oxide half field effect transistor
(metal-oxide-semiconductor field-effect trans istor,mosfet).By being opened using mosfet
Close so as to break-make can be controlled sensitiveer.
In one of which embodiment, two or more power resistor 101 is uniformly distributed in parallel circuit 10.By inciting somebody to action
Two or more power resistor 101 is uniformly distributed in parallel circuit 10, makes radiating average, will not form localized hyperthermia's point.Ratio is adopted
With single high-power resistance more safety and reliability.
With reference to Fig. 1, the utility model proposes a kind of battery management system, including two or more power resistor parallel with one another
The parallel circuit 10 of 101 formation, battery cell 20 and the breaker 30 controlling parallel circuit 10 and battery cell 20 break-make, also wrap
Include the battery management controller 40 controlling breaker break-make.
Battery management controller 40 controls the break-make of breaker 30, and battery management controller 40 is responsible for judging present battery system
Whether system meets equilibrium condition, or battery management controller 40 receive the judgment means transmission of outside judge whether meet all
The result of weighing apparatus condition.If judging to meet equilibrium condition, controlling breaker 30 to close, so that battery cell 20 is discharged.If judging not
Meet equilibrium condition, then control breaker 30 to disconnect, make battery cell 20 stop electric discharge.
In one of which embodiment, after battery management controller 40 is concatenated with load resistance 50, with breaker 30 electricity
Connect.Battery management controller 40 is made to be protected.
In one of which embodiment, battery management system includes two or more cell managing device parallel with one another.
The limited energy being provided due to single battery monomer 20, so powered using multiple battery cells 20, using battery management control
Device 40 can also make the electricity between different battery cells 20 differ very little, so that the electricity between different battery cells 20
Amount is also equalized.
In one of which embodiment, breaker 30 switchs for mosfet.
In one of which embodiment, two or more power resistor 101 is uniformly distributed in parallel circuit 10.
With reference to Fig. 1, an embodiment of the present utility model is described.
Battery management system includes multiple cell managing devices parallel with one another, battery management controller 40 and load resistance
50.After battery management controller 40 is concatenated with load resistance 50, electrically connect with breaker 30.
Cell managing device includes: multiple parallel circuits 10 of power resistors 101 formation parallel with one another, battery cell 20
Switch 30 with controlling parallel circuit 10 and the mosfet of battery cell 20 break-make；
The positive pole 201 of the first end 301, parallel circuit 10 and battery cell 20 of mosfet switch 30 is sequentially connected in series；
Connected with the negative pole 202 of battery cell 20 in second end 302 of mosfet switch 30；Mosfet switchs 30 the 3rd end 303 and bears
Carry resistance 50 to electrically connect.
Above-described is only principle of the present utility model and preferred embodiment.It should be pointed out that it is general for this area
For logical technical staff, on the basis of the utility model principle, some other modifications can also be made, also should be regarded as this practicality
New protection domain.
Claims (8)
1. a kind of cell managing device is it is characterised in that include:
Parallel circuit that two or more power resistor parallel with one another is formed, battery cell and control described parallel circuit with described
The breaker of battery cell break-make；
The positive pole of the first end of described breaker, described parallel circuit and described battery cell is sequentially connected in series；
Connected with the negative pole of described battery cell in second end of described breaker.
2. cell managing device according to claim 1 it is characterised in that:
Described breaker switchs for mosfet.
3. cell managing device according to claim 1 and 2 it is characterised in that:
Power resistor described in two or more is uniformly distributed in described parallel circuit.
4. a kind of battery management system, it is characterised in that including cell managing device as claimed in claim 1, also includes controlling
Make the battery management controller of described breaker break-make.
5. battery management system according to claim 4 it is characterised in that:
After described battery management controller is concatenated with load resistance, it is connected with described circuit breaker electric.
6. battery management system according to claim 4 it is characterised in that:
Described battery management system includes two or more described cell managing device parallel with one another.
7. battery management system according to claim 4 it is characterised in that:
Described breaker switchs for mosfet.
8. the battery management system according to any one of claim 4 to 7 it is characterised in that:
Power resistor described in two or more is uniformly distributed in described parallel circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620887683.1U CN205901393U (en) | 2016-08-16 | 2016-08-16 | Battery management device and battery management system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620887683.1U CN205901393U (en) | 2016-08-16 | 2016-08-16 | Battery management device and battery management system |
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| Publication Number | Publication Date |
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| CN205901393U true CN205901393U (en) | 2017-01-18 |
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| CN201620887683.1U Active CN205901393U (en) | 2016-08-16 | 2016-08-16 | Battery management device and battery management system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018196163A1 (en) * | 2017-04-25 | 2018-11-01 | 深圳市海云图新能源有限公司 | Lithium battery pack protection system |
-
2016
- 2016-08-16 CN CN201620887683.1U patent/CN205901393U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018196163A1 (en) * | 2017-04-25 | 2018-11-01 | 深圳市海云图新能源有限公司 | Lithium battery pack protection system |
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| GR01 | Patent grant |