CN206559063U - A kind of power battery pack balancer and electrokinetic cell system and vehicle - Google Patents
A kind of power battery pack balancer and electrokinetic cell system and vehicle Download PDFInfo
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- CN206559063U CN206559063U CN201621410383.0U CN201621410383U CN206559063U CN 206559063 U CN206559063 U CN 206559063U CN 201621410383 U CN201621410383 U CN 201621410383U CN 206559063 U CN206559063 U CN 206559063U
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- 238000001514 detection method Methods 0.000 claims description 11
- 230000005611 electricity Effects 0.000 claims description 9
- 239000000178 monomer Substances 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 230000021715 photosynthesis, light harvesting Effects 0.000 abstract description 3
- 238000007689 inspection Methods 0.000 description 4
- 230000001360 synchronised effect Effects 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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- 229910052710 silicon Inorganic materials 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model provides a kind of power battery pack balancer and electrokinetic cell system and vehicle.The power battery pack balancer includes：Electric capacity (C) and capacitance connection on-off circuit, the capacitance connection on-off circuit are used to any one at least two battery modules of power battery pack connecting into charging and discharging circuit with the electric capacity (C).Power battery pack balancer of the present utility model utilizes each module formation charge-discharge circuit in electric capacity and capacitance connection on-off circuit and at least two battery modules, and then can realize the energy balance between battery modules, and avoids energy dissipation.
Description
Technical field
The utility model is related to electrokinetic cell field, more particularly to a kind of power battery pack balancer and electrokinetic cell system
System and vehicle.
Background technology
Electrokinetic cell equilibrium refers to the balancing energy for causing each battery cell in same battery bag.It can divide by balancing principle
For two major classes：Active equilibrium is balanced with passive type.
Circuit structure and control strategy are relatively simple in a balanced way for passive type.As shown in figure 1, in same battery modules
Each cell B1-Bn series connection corresponding resistance R1-Rn and controlling switch K1-K2.By the conducting of controlling switch by energy
An energy release part for the higher cell of amount, to reach the balance uniformity of electrokinetic cell.
Another is active equilibrium, also known as Energy Transfer, and it passes through energy is high from battery modules inner capacities
Cell is transferred on the low cell of battery modules inner capacities, so as to reach each group cell energy in battery modules
Equilibrium it is consistent.
In the prior art, either active balanced or passive type is balanced, all only to battery cell in battery modules or
Carried out between battery cell battery core balanced.So as to, it is impossible to realize the balancing energy between battery modules.
Utility model content
The purpose of this utility model is to provide a kind of power battery pack balancer, and it is first realized between battery modules
Equilibrium, then the equilibrium in battery modules between cell is carried out, so as to solve the above-mentioned problems in the prior art.
To achieve the above object, the utility model provides a kind of power battery pack balancer, and the power battery pack is equal
Weighing apparatus device includes：
Electric capacity and capacitance connection on-off circuit, the capacitance connection on-off circuit are used at least two of power battery pack
Any one in battery modules is with the capacitance connection into charging and discharging circuit.That is, when needing, in turn or by
One ground by the battery modules of power battery pack and the capacitance connection into charging and discharging circuit so that between realizing each battery modules
Balancing energy.
Preferably, the power battery pack balancer further comprises centralized transformer, the centralized transformer
Including a primary coil and multiple secondary coils,
Wherein, the primary coil is connected into a discharge and recharge by a primary coil switch with the power battery pack
Loop；
Each secondary coil switchs monomer electricity corresponding to one of the power battery pack by a respective secondary
Pond is connected into a charging and discharging circuit.
Preferably, all secondary coils corresponding with the cell in each battery modules switch is linkage.
Preferably, the capacitance connection on-off circuit includes：
S1 and diode D1 is switched, switch S1 and diode D1 is serially connected in the hot end and battery modules of electric capacity in parallel
Between 1 positive pole, diode D1 positive poles are connected to the hot end of electric capacity, and negative pole connects the positive pole of battery modules 1；
Diode D2 and D3, diode D2 and D3 difference tandem tap S2 and S3 and reverse parallel connection, D2 positive pole connection electricity
The hot end of appearance, D2 negative pole is connected between battery modules 1 and battery modules 2 by switching S7；
Diode D4 and D5, diode D4 and D5 difference tandem tap S4 and S5 and reverse parallel connection, D4 positive pole connection electricity
The cold end of appearance, diode D4 negative pole is connected between battery modules 2 and battery modules 3 by switching S9,
Switch S6 and diode D6 is serially connected between the negative pole of the cold end of electric capacity and battery modules 3 in parallel, two poles
Pipe D6 positive pole is connected to the negative pole of battery modules 3, and negative pole connects the cold end of electric capacity,
Switch S8, switch S8 one end connection diode D2 negative pole, other end connection diode D4 negative pole.
Preferably, high potential of the positive pole and negative pole of each battery modules each via a controlling switch respectively with electric capacity
End and cold end connection.
Preferably, the controlling switch is Sofe Switch.
Preferably, the power battery pack balancer also includes detection unit and control unit, the detection unit inspection
The voltage of each battery modules and/or cell is surveyed, described control unit is electrically connected with the detection unit, with based on the inspection
Survey the testing result of unit and control capacitance connection on-off circuit.
The utility model also provides a kind of electrokinetic cell system, and the electrokinetic cell system is including power battery pack and as above
Described power battery pack balancer.
The utility model also provides a kind of vehicle, and the vehicle includes power battery pack balancer as described above, or
Including electrokinetic cell system as described above.
Power battery pack balancer of the present utility model utilizes electric capacity and capacitance connection on-off circuit and at least two electricity
Each module formation charge-discharge circuit in the module of pond, and then the energy balance between battery modules can be realized, and avoid
Energy dissipation.
Brief description of the drawings
Fig. 1 shows electrokinetic cell passive type schematic circuit in a balanced way in the prior art.
Fig. 2 shows the schematic circuit according to an embodiment of the present utility model.
Fig. 3 shows the schematic circuit according to another embodiment of the present utility model.
Reference：
| 301 | Primary coil | K10 | Primary coil is switched |
| 302 | Secondary coil | K20 | Secondary coil is switched |
| C | Electric capacity |
Embodiment
In the accompanying drawings, same or similar element is represented or with same or like function using same or similar label
Element.Embodiment of the present utility model is described in detail below in conjunction with the accompanying drawings.
Fig. 2 shows the schematic circuit according to an embodiment of the present utility model.Fig. 3 shows new according to this practicality
The schematic circuit of another embodiment of type.
The power battery pack balancer of diagram includes：Electric capacity C and capacitance connection on-off circuit, the capacitance connection switch
Circuit is used to any one at least two battery modules of power battery pack connecting into charging and discharging circuit with the electric capacity C.
That is, when needing, in turn in other words one by one by the battery modules of power battery pack and the capacitance connection
Into charging and discharging circuit, so as to realize the balancing energy between each battery modules.It is understood that can be using control phase manually
The mode of inductive switch closure, it would however also be possible to employ the mode for automatically controlling respective switch closure is returned to sequentially form above-mentioned discharge and recharge
Road.
Power battery pack balancer of the present utility model utilizes electric capacity and capacitance connection on-off circuit and at least two electricity
Each module formation charge-discharge circuit in the module of pond, and then the energy balance between battery modules can be realized, and avoid
Energy dissipation.As shown in Fig. 2 the electrokinetic cell includes multiple battery modules being connected in series with each other.Each battery modules bag
Include multiple cells being serially connected.
Electric capacity C capacity, shape, structure or construction etc. can be set according to specific needs.
Capacitance connection on-off circuit includes connecting line and multiple controlling switches.The form of controlling switch can be known
What is switched.Advantageously use electric-controlled switch, so as to automatically, easily control it is described switch come select a module with
The electric capacity series connection, charges, or from the electric capacity C power takings, finally realize the equilibrium between each module to the electric capacity C.
Advantageously, the controlling switch is Sofe Switch.That is, controlling switch electric current in turn off process is first
Zero is dropped to, both end voltage difference slowly rises to off-state value again, so turn-off power loss is approximately zero.Because electric current has declined before shut-off
To zero, perceptual shut-off is solved the problems, such as.The controlling switch is when opening, and both end voltage difference first drops to zero, on electric current is slow again
On-state value is raised to, so turn-on consumption is approximately zero, capacitive is solved and opens problem.
As shown in Fig. 2 the capacitance connection on-off circuit can also be made up of connecting line, controlling switch and diode.Two
Pole pipe is used for control electric current direction, prevents short circuit.
Referring to Fig. 2, the power battery pack balancer further comprises centralized transformer, the centralized transformer
Including a primary coil 301 and multiple secondary coils 302.The centralized transformer is used to realize the energy between cell
Amount is balanced.
The primary coil 301 switchs K10 by a primary coil and the power battery pack is connected into a charge and discharge
Electrical circuit.It is corresponding to one of the power battery pack single that each secondary coil 302 switchs K20 by a respective secondary
Body battery is connected into a charging and discharging circuit.Specifically, the secondary coil 302 is mutually the same, the level coil switch
K20 is also mutually the same.
For example, when having detected low-voltage cell, primary coil switch K10 conductings, whole power battery pack pair
Primary coil 301 (primary side winding) is charged, and energy stores are in primary coil 301.Then, primary coil switch is disconnected
K10 so that the corresponding respective secondary switch K20 conductings of low-voltage cell, enters to corresponding low-voltage cell
Row charging.Optionally, primary coil switch K10 and secondary coil switch K20 is also Sofe Switch.Preferably, with each battery
The corresponding all secondary coils switch K20 of cell in module is linkage.That is, with each battery modules
The corresponding all secondary coils switch K20 of cell be linked switch, synchronous open turns off with synchronous.Specifically,
It can use and physically link into an integrated entity, it would however also be possible to employ control module, to cause separate switch synchronously to open
Open and turn off.So, can be quickly to being charged between the cell in same battery modules.
Preferably, the quantity of the battery modules is three.
In the embodiment shown in Figure 2, power battery pack illustratively includes six cell B1-B6, illustratively two
Battery constitutes a battery modules.The capacitance connection on-off circuit includes：
S1 and diode D1 is switched, switch S1 and diode D1 is serially connected in electric capacity C hot end and battery mould in parallel
Between the positive pole of group 1, diode D1 positive poles are connected to electric capacity C hot end, and negative pole connects the positive pole of battery modules 1；
Diode D2 and D3, diode D2 and D3 difference tandem tap S2 and S3 and reverse parallel connection, D2 positive pole connection electricity
Hold C hot end, D2 negative pole is connected between battery modules 1 and battery modules 2 by switching S7；
Diode D4 and D5, diode D4 and D5 difference tandem tap S4 and S5 and reverse parallel connection, D4 positive pole connection electricity
Hold C cold end, diode D4 negative pole is connected between battery modules 2 and battery modules 3 by switching S9,
Switch S6 and diode D6 is serially connected between the negative pole of electric capacity C cold end and battery modules 3 in parallel, two poles
Pipe D6 positive pole is connected to the negative pole of battery modules 3, and negative pole connects electric capacity C cold end,
Switch S8, switch S8 one end connection diode D2 negative pole, other end connection diode D4 negative pole.
In the embodiment shown in fig. 3 preferably, the positive pole and negative pole of each battery modules are opened each via a control
Pass is connected with electric capacity C hot end and cold end respectively.So as to which circuit structure is simple and reliable.In figure 3, battery modules
Quantity be three, but the utility model not limited to this.
Specifically, in figure 3, power battery pack illustratively includes three battery modules being serially connected, each battery mould
Group illustratively includes two cells being serially connected.Will by six controlling switches K11, K12, K21, K22, K31, K32
The positive pole and negative pole of each battery modules are each together in series with electric capacity C.Advantageously, the controlling switch K11, K12, K21,
K22, K31, K32 are Sofe Switch.Commercially available appropriate model, the Sofe Switch of specification can be selected as needed.For example from appropriate
Silicon-controlled device as Sofe Switch, realize Sofe Switch in the way of adjusting thyristor operating angle.
It is understood that the circuit in Fig. 3 can also be set including centralized transformer and corresponding switch, the collection
Chinese style transformer includes a primary coil 301 and multiple secondary coils 302.But, for the sake of simple and be clear, eliminate
Related circuit.
Preferably, the power battery pack balancer also includes detection unit and control unit, the detection unit inspection
The voltage of each battery modules and/or cell is surveyed, described control unit is electrically connected with the detection unit, with based on the inspection
Survey the testing result of unit and control capacitance connection on-off circuit.The detection unit and control unit can use prior art
In any existing device, as long as relevant voltage can be detected, and the conducting of respective switch is controlled with cutting based on the voltage
Only.It is understood that described control unit can be also used for control primary coil switch K10 and secondary coil switch
K20。
In one alternate embodiment, described control unit is integrated in the battery management unit of electrokinetic cell.
The utility model also provides a kind of electrokinetic cell system, and the electrokinetic cell system is including power battery pack and as above
Described power battery pack balancer.
It is last it is to be noted that：Above example is only limited to illustrate the technical solution of the utility model, rather than to it
System.It will be understood by those within the art that：Technical scheme described in foregoing embodiments can be modified, or
Person carries out equivalent substitution to which part technical characteristic；These modifications are replaced, and take off the essence of appropriate technical solution
From the spirit and scope of each embodiment technical scheme of the utility model.
Claims (10)
1. a kind of power battery pack balancer, it is characterised in that including：
Electric capacity (C) and capacitance connection on-off circuit, the capacitance connection on-off circuit are used at least two of power battery pack
Any one in battery modules connects into charging and discharging circuit with the electric capacity (C).
2. power battery pack balancer as claimed in claim 1, it is characterised in that the power battery pack balancer enters
One step includes centralized transformer, and the centralized transformer includes a primary coil (301) and multiple secondary coils
(302),
Wherein, the primary coil (301) switchs (K10) by a primary coil and the power battery pack is connected into one
Charging and discharging circuit；
It is corresponding to one of the power battery pack that each secondary coil (302) switchs (K20) by a respective secondary
Cell is connected into a charging and discharging circuit.
3. power battery pack balancer as claimed in claim 2, it is characterised in that with the monomer electricity in each battery modules
The corresponding all secondary coils switch (K20) in pond is linkage.
4. the power battery pack balancer as any one of claim 1-3, it is characterised in that the battery modules
Quantity is three.
5. power battery pack balancer as claimed in claim 4, it is characterised in that the capacitance connection on-off circuit bag
Include：
S1 and diode D1 is switched, switch S1 and diode D1 is serially connected in the hot end and battery modules 1 of electric capacity (C) in parallel
Positive pole between, diode D1 positive poles are connected to electric capacity (C) hot end, and negative pole connects the positive pole of battery modules 1；
Diode D2 and D3, diode D2 and D3 difference tandem tap S2 and S3 and reverse parallel connection, diode D2 positive pole connection
The hot end of electric capacity (C), diode D2 negative pole is connected between battery modules 1 and battery modules 2 by switching S7；
Diode D4 and D5, diode D4 and D5 difference tandem tap S4 and S5 and reverse parallel connection, diode D4 positive pole connection
The cold end of electric capacity (C), diode D4 negative pole is connected between battery modules 2 and battery modules 3 by switching S9,
Switch S6 and diode D6 is serially connected between the cold end of electric capacity (C) and the negative pole of battery modules 3 in parallel, diode
D6 positive pole is connected to the negative pole of battery modules 3, and negative pole connects the cold end of electric capacity (C),
Switch S8, switch S8 one end connection diode D2 negative pole, other end connection diode D4 negative pole.
6. the power battery pack balancer as any one of claim 1-3, it is characterised in that each battery modules
Positive pole and negative pole are connected with the hot end and cold end of electric capacity (C) respectively each via a controlling switch.
7. power battery pack balancer as claimed in claim 6, it is characterised in that the controlling switch is Sofe Switch.
8. the power battery pack balancer as any one of claim 1-3, it is characterised in that the power battery pack
Balancer also includes detection unit and control unit, and the detection unit detects the electricity of each battery modules and/or cell
Pressure, described control unit is electrically connected with the detection unit, controls electric capacity to connect with the testing result based on the detection unit
Connect on-off circuit.
9. a kind of electrokinetic cell system, it is characterised in that including power battery pack and as any one of claim 1-8
Power battery pack balancer.
10. a kind of vehicle, it is characterised in that including the power battery pack balancer as any one of claim 1-8,
Or including electrokinetic cell system as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621410383.0U CN206559063U (en) | 2016-12-21 | 2016-12-21 | A kind of power battery pack balancer and electrokinetic cell system and vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621410383.0U CN206559063U (en) | 2016-12-21 | 2016-12-21 | A kind of power battery pack balancer and electrokinetic cell system and vehicle |
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| CN206559063U true CN206559063U (en) | 2017-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621410383.0U Active CN206559063U (en) | 2016-12-21 | 2016-12-21 | A kind of power battery pack balancer and electrokinetic cell system and vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114156981A (en) * | 2021-12-03 | 2022-03-08 | 傲普(上海)新能源有限公司 | Battery module equalization control circuit and method based on transformer |
-
2016
- 2016-12-21 CN CN201621410383.0U patent/CN206559063U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114156981A (en) * | 2021-12-03 | 2022-03-08 | 傲普(上海)新能源有限公司 | Battery module equalization control circuit and method based on transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: The utility model relates to a power battery pack balancing device, a power battery system and a vehicle Effective date of registration: 20211213 Granted publication date: 20171013 Pledgee: BEIJING AUTOMOTIVE GROUP Co.,Ltd. Pledgor: Borgward Automotive (China) Co., Ltd. Registration number: Y2021990001167 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20231201 Granted publication date: 20171013 Pledgee: BEIJING AUTOMOTIVE GROUP Co.,Ltd. Pledgor: Beijing baowo Automobile Co.,Ltd.|Borgward Automotive (China) Co., Ltd. Registration number: Y2021990001167 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |