CN207225102U - Series-connected cell distribution type active nondissipative equalization circuit, battery pack and automobile - Google Patents
Series-connected cell distribution type active nondissipative equalization circuit, battery pack and automobile Download PDFInfo
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- CN207225102U CN207225102U CN201720574751.3U CN201720574751U CN207225102U CN 207225102 U CN207225102 U CN 207225102U CN 201720574751 U CN201720574751 U CN 201720574751U CN 207225102 U CN207225102 U CN 207225102U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
The utility model discloses series-connected cell distribution type active nondissipative equalization circuit, battery pack and automobile.By setting at least two distributions from plate, master control borad, current sensor and storage battery；Each distribution corresponds to a series battery from plate and is electrically connected by power supply circuit with storage battery, for carrying out charge and discharge balancing to the single battery of series battery by storage battery；Current sensor is arranged at power supply circuit and is electrically connected with master control borad；The electric current exported for gathering series battery in power supply circuit；Master control borad is connected with distribution from plate and storage battery, electric current for being gathered according to current sensor obtains the SOC parameter of each single battery in series battery, and carries out charge and discharge balancing to the single battery of series battery from plate according to SOC parameter control is distributed.Battery balanced Distributed Design is realized, simplifies circuit structure and layout designs, Distributed Design has split current collection process at the same time so that operating accuracy is more accurate.
Description
Technical field
It the utility model is related to battery technology field, more particularly to series-connected cell distribution type active nondissipative equalization electricity
Road, battery pack and automobile.
Background technology
General non-dissipative type active equalization all shares track from plate scheme using Centralized layout, one energy of design
Come to positive energy exchange between monomer or multiple monomers, which is connected respectively to battery pack BUS+ and BUS-, one piece from plate collection and
Balanced battery strings number is larger；When battery string formation number, which is more than, designs string number from plate, increased using modular mode from plate quantity；
All electric currents of battery pack are converted to low pressure 12 or 24V progress by battery pack always just always negative interface output, then by vehicle-mounted DCDC
Vehicle mounted electrical apparatus powers and charges a battery.Deficiency existing for this ripe pattern has：
1st, Centralized layout string number is more, and voltage sample line is longer, and length is different so that and voltage acquisition precision is slightly worse,
Space is also taken up, weight is big.
2nd, its energy used shares track and is connected respectively to battery pack BUS+ and BUS-, bidirectional DC/DC buck amplitude
Greatly.
3rd, when battery pack only gives vehicle-mounted low-power electric power supply, current acquisition precision is poor.
Utility model content
The utility model provides series-connected cell distribution type active nondissipative equalization circuit, battery pack and automobile, solution
Determine the defects of centralized battery balanced scheme integral layout in the prior art is complicated and operating accuracy is not high.
To realize above-mentioned design, the utility model uses following technical scheme：
First aspect uses a kind of series-connected cell distribution type active nondissipative equalization circuit, including at least two distributions
Formula is from plate, master control borad, current sensor and storage battery；
Each distribution corresponds to a series battery from plate and is electrically connected by power supply circuit with the storage battery,
For carrying out charge and discharge balancing to the single battery of the series battery by the storage battery；
The current sensor is arranged at power supply circuit and is electrically connected with the master control borad；Exist for gathering series battery
The electric current of the power supply circuit output；
The master control borad is connected with the distribution from plate and storage battery, for what is gathered according to the current sensor
Electric current obtains the SOC parameter of each single battery in the series battery, and the distribution according to the SOC state modulators
Formula carries out charge and discharge balancing from plate to the single battery of the series battery.
Wherein, the distribution is opened from plate including micro-control unit MCU, isolated DC converter and multiple relays
Close；
The first connecting node is provided between the both ends of the series battery and two neighboring single battery；It is described after
Electric switch includes first switch group, second switch, the 3rd switch, the 4th switch, the 5th switch and the 6th switch；
The first end of relay switch in the first switch group connects one to one with first tie point, and will
Relay switch in the first switch group is numbered by the cathode and anode directions of the series battery；Numbering is odd number
The second end of relay switch is connected with the second tie point, and numbering is the second end and the 3rd tie point of the relay switch of even number
It is connected；
The first end of the second switch and the 4th switch is connected with second tie point；3rd switch and the
The first end of five switches is connected with the 3rd tie point；The second switch and the 3rd switch second end with it is described every
Anode from the first end of formula direct current transducer is connected；It is described 4th switch and the 5th switch second end with it is described isolated
The cathode of the first end of direct current transducer is connected；
It is described 6th switch first end be connected with the anode of the series battery, it is described 6th switch second end and
3rd tie point is connected；
The second end of the isolated DC converter is connected with the storage battery, the controlled end of the relay switch with
The control terminal of the MCU is connected, and the MCU is connected with the storage battery.
Wherein, the isolated DC converter includes bidirectional, dc converter control chip and transformer.
Wherein, the master control borad is connected with the distribution from plate by CAN bus.
Wherein, the CAN bus includes ISO11898 protocol bus and/or SAE J1939 protocol bus.
Wherein, the storage battery is 12V or 24V A-batteries.
Wherein, the power supply circuit is harness or PCB circuits.
Wherein, the MCU is 16 control chips.
Second aspect uses a kind of battery pack, including the actively non-dissipation of foregoing any one of them series-connected cell distribution type
Type equalizing circuit.
The third aspect uses a kind of automobile, including previously described battery pack.
The beneficial effects of the utility model are：By set at least two it is distributed from plate, master control borad, current sensor and
Storage battery；Each distribution corresponds to a series battery from plate and is electrically connected by power supply circuit with the storage battery,
For carrying out charge and discharge balancing to the single battery of the series battery by the storage battery；The current sensor is set
It is electrically connected in power supply circuit and with the master control borad；The electric current exported for gathering series battery in the power supply circuit；Institute
State master control borad with the distribution from plate and storage battery to be connected, the electric current for being gathered according to the current sensor obtains institute
The SOC parameter of each single battery in series battery is stated, and controls the distribution from plate to described according to the SOC parameter
The single battery of series battery carries out charge and discharge balancing.Battery balanced Distributed Design is realized, simplifies circuit structure
And layout designs, Distributed Design have split current collection process at the same time so that operating accuracy is more accurate.
Brief description of the drawings
, below will be to the utility model embodiment in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing is briefly described needed in description, it should be apparent that, drawings in the following description are only that this practicality is new
Some embodiments of type, for those of ordinary skill in the art, without creative efforts, can be with root
Other attached drawings are obtained according to the content of the utility model embodiment and these attached drawings.
Fig. 1 is opening up for the series-connected cell distribution type active nondissipative equalization circuit that is provided in the utility model embodiment
Flutter figure；
Fig. 2 is divided in the series-connected cell distribution type active nondissipative equalization circuit provided in the utility model embodiment
Structure diagram of the cloth from plate；
Fig. 3 is that the series-connected cell distribution type active nondissipative equalization circuit provided in the utility model embodiment is overall
Structure diagram.
Embodiment
Further to illustrate that the utility model is to reach the technological means and effect that predetermined purpose of utility model taken,
Below in conjunction with attached drawing and preferred embodiment, to according to the utility model proposes series-connected cell distribution type active non-dissipative type it is equal
Embodiment, feature and its effect of weighing apparatus circuit, battery pack and automobile, describe in detail as after.
Please refer to Fig.1 to Fig. 3, it is that the series-connected cell distribution type provided in the utility model embodiment is actively non-respectively
Structure of the distribution from plate in the topological diagram of dissipative equalization circuit, series-connected cell distribution type active nondissipative equalization circuit
Schematic diagram and series-connected cell distribution type active nondissipative equalization circuit overall structure diagram.
Referring first to Fig. 1, it is distributed from plate 10, master control borad 20, current sensor which includes at least two
60 and storage battery 30；
Each distribution corresponds to a series battery from plate 10 and passes through power supply circuit 40 and the storage battery 30
It is electrically connected, for carrying out charge and discharge balancing to the single battery of the series battery by the storage battery 30；
The current sensor 60 is arranged at power supply circuit 40 and is electrically connected with the master control borad 20；For gathering series electrical
The electric current that pond group is exported in the power supply circuit 40；
The master control borad 20 is connected with the distribution from plate 10 and storage battery 30, for according to the current sensor
The electric current of 60 collections obtains the SOC parameter of each single battery in the series battery, and controls institute according to the SOC parameter
State the distributed single battery progress charge and discharge balancing from plate 10 to the series battery.
In the present solution, by distribution from the power supply of plate 10, i.e., storage battery 30 is used as energy share medium, so that
Energy progress equilibrium can be shared by this low voltage rail by obtaining the module of different carrying capacities, and realization can be with the vehicle-mounted storage of quick calling
The electricity of battery 30 carrys out the less monomer of carrying capacity between balancing battery, and parallel balancing speed is fast, the balanced flow of reduction.
Based on above-mentioned design, realize non-dissipation active equalization and realize distributed arrangement, can be embedding from plate by distribution
Enter to be installed in battery modules, enormously simplify voltage sample harness, harness of only powering and communicate in Pack, reduces space and account for
With with it is important, reduce the workload of production.Generally speaking, battery balanced Distributed Design is realized, simplifies circuit structure
And layout designs, Distributed Design have split current collection process at the same time so that operating accuracy is more accurate.
In concrete implementation scheme, please refer to Fig.2 and Fig. 3, the distribution include micro-control unit MCU from plate 10
14th, isolated DC converter 13 and multiple relay switches 12；
The first connecting node is provided between the both ends of the series battery and two neighboring single battery 11；It is described
Relay switch 12 includes first switch group, second switch, the 3rd switch, the 4th switch, the 5th switch and the 6th switch；
The first end of relay switch 12 in the first switch group connects one to one with first tie point, and
Relay switch 12 in the first switch group is numbered by the cathode and anode directions of the series battery；Numbering is strange
The second end of several relay switches 12 is connected with the second tie point, and numbering is the second end and the of the relay switch 12 of even number
Three tie points are connected；
The first end of the second switch and the 4th switch is connected with second tie point；3rd switch and the
The first end of five switches is connected with the 3rd tie point；The second switch and the 3rd switch second end with it is described every
Anode from the first end of formula direct current transducer 13 is connected；The second end of 4th switch and the 5th switch is isolated with described
The cathode of the first end of formula direct current transducer 13 is connected；
It is described 6th switch first end be connected with the anode of the series battery, it is described 6th switch second end and
3rd tie point is connected；
The second end of the isolated DC converter 13 is connected with the storage battery 30, the relay switch 12 by
Control end is connected with the control terminal of the MCU 14, and the MCU 14 is connected with the storage battery 30.
In figs. 2 and 3 by taking 6 single batteries 11 are connected as an example, by single battery 11 from left to right number consecutively be a,
B ... (numberings of inwhole labeled monomer batteries in Fig. 2 and Fig. 3), obtains the numbering of a single battery 11 successively；Switch basis
The difference of connecting object is broadly divided into first switch group, second switch, the 3rd switch, the 4th switch, the 5th switch and the 6th and opens
Close, wherein first switch group is connected with single battery 11, according to the cathode and anode directions of battery pack, number consecutively be 1., 2.,
3. ... (in Fig. 2 and Fig. 3 all the numberings of mark first switch groups), convenient for subsequent descriptions, second switch, the 3rd open
Close, respectively 4., 5., 6., 7. numbering is for the 4th switch and the 5th switch.Set and tied according to the connection of above-mentioned relay switch 12
Fig. 2 is closed, it has been confirmed that a series battery being made of n single battery 11 is, it is necessary to which n+1 relay switch 12 forms
There is a switch at first switch group, 11 both ends of single battery respectively, and the right end of last single battery 11 has two switches, separately
5 relay switches 12 are added outside, need n+6 switch altogether, the relay switch 12 of odd and even number is connected respectively to two
A track (i.e. the second tie point and the 3rd tie point), two tracks are connected with two relay switches 12 respectively again (specifically please
With reference to the connection relation in figure 2 4., 5., 6., 7.), two tracks are all connected to by isolated DC by relay switch 12
The first end of converter 13, i.e. isolated DC converter 13 a input/output port, isolated DC converter 13
Another input/output port of second end, i.e. isolated DC converter 13 is connected with power supply circuit 40, by power supply circuit 40
Equilibrium, which is carried out, as energy-transmission channel changes electricity, multiple distributions are communicated from plate 10 and master control borad 20 by CAN bus 50,
Receive balance dispatching.Wherein the 6th switch can switch 1. to coordinate and connect whole battery modules at the same time with the switch of the leftmost side
Enter circuit to discharge, peak power output is realized with this.
For distribution after the order that plate 10 receives master control borad 20, start to process needs balanced single battery 11.When need
When charging to the single battery 11 of too low SOC, it is assumed that, MCU 14 controls opening for 11 both ends of single battery for single battery 1.
1., 2., 5. and 6. pass closes so that 1. positive and negative anodes are correctly accessing the first end of isolated DC converter 13 just to single battery
Anode, then control isolated DC converter 13 to run, by the electric charge transfer of storage battery 30 to single battery 1., improve monomer electricity
The SOC of pond 1., reaches the standard of equilibrium, is then turned off switch 1., 2., 5. and 6.；1. processing completes single battery after, with
Same method handles the single battery 11 of too low SOC one by one.
When needing excessive SOC monomers to discharge, it is assumed that, MCU 14 controls opening for the monomer both ends for single battery 2.
Pass 2., 3., 4. and 7. close so that single battery 2. positive and negative anodes correctly access isolated DC converter 13 one end it is positive and negative
Pole, then control output control order isolated DC converter 13 to run, by the electric charge transfer of single battery 2. to storage battery 30,
The SOC of single battery 2. is reduced, reaches the standard of equilibrium, is then turned off switch 2., 3., 4. and 7.；Processing is completed single
Body battery 2. after, handle the single battery 11 of excessive SOC one by one in the same way.
When storage battery 30 needs to charge or power to low-voltage electrical apparatus, multiple distributed lives from plate 10 according to master control borad 20
Order, export suitable electric current in each single battery 11, power to low-voltage electrical apparatus and storage battery 30, while can complete module and
The equilibrium of monomer, energy share the current sensor 60 of track, such as Hall current sensor 60 acquires battery pack in track
The electric current of output, for estimating the parameters such as SOC.
Relay switch 12 in this programme can be switch mosfet or optical relay switch, and overall requirement is to receive
Corresponding signal (electric signal or optical signal) driving can be produced after to corresponding control instruction to be turned on or off.
Wherein, the isolated DC converter 13 includes bidirectional, dc converter control chip and transformer.
Wherein, the master control borad 20 is connected with the distribution from plate 10 by CAN bus 50.
Wherein, the CAN bus 50 includes ISO11898 protocol bus and/or SAE J1939 protocol bus.
Wherein, the storage battery 30 is 12V or 24V A-batteries.
Wherein, the power supply circuit 40 is harness or PCB circuits.
Wherein, the MCU 14 is 16 control chips.
The utility model embodiment uses a kind of battery pack, including the series battery distribution described in foregoing any embodiment
Formula active nondissipative equalization circuit.
The utility model embodiment also uses a kind of automobile, including previously described battery pack.
After battery pack and automobile use above-mentioned series-connected cell distribution type active nondissipative equalization circuit, correspondence possesses
Identical technique effect, is not described further herein.
The above descriptions are merely preferred embodiments of the present invention, and not the utility model is made in any form
Limitation, although the utility model has been disclosed with preferred embodiment as above, but be not limited to the utility model, it is any ripe
Professional and technical personnel is known, is not being departed from the range of technical solutions of the utility model, when in the technology using the disclosure above
Hold the equivalent embodiment made a little change or be modified to equivalent variations, as long as being without departing from technical solutions of the utility model
Hold, any simple modification, equivalent change and modification made according to the technical essence of the utility model to above example, still
Belong in the range of technical solutions of the utility model.
Claims (10)
1. a kind of series-connected cell distribution type active nondissipative equalization circuit, it is characterised in that distributed including at least two
From plate, master control borad, current sensor and storage battery；
Each distribution corresponds to a series battery from plate and is electrically connected by power supply circuit with the storage battery, is used for
Charge and discharge balancing is carried out to the single battery of the series battery by the storage battery；
The current sensor is arranged at power supply circuit and is electrically connected with the master control borad；For gathering series battery described
The electric current of power supply circuit output；
The master control borad is connected with the distribution from plate and storage battery, for the electric current gathered according to the current sensor
The SOC parameter of each single battery in the series battery is obtained, and it is described distributed from plate according to SOC parameter control
Charge and discharge balancing is carried out to the single battery of the series battery.
2. series-connected cell distribution type active nondissipative equalization circuit according to claim 1, it is characterised in that described
Distribution includes micro-control unit MCU, isolated DC converter and multiple relay switches from plate；
The first connecting node is provided between the both ends of the series battery and two neighboring single battery；The relay
Switch includes first switch group, second switch, the 3rd switch, the 4th switch, the 5th switch and the 6th switch；
The first end of relay switch in the first switch group connects one to one with first tie point, and by described in
Relay switch in first switch group is numbered by the cathode and anode directions of the series battery；Numbering is the relay of odd number
The second end of device switch is connected with the second tie point, and numbering is the second end and the 3rd tie point phase of the relay switch of even number
Even；
The first end of the second switch and the 4th switch is connected with second tie point；3rd switch and the 5th is opened
The first end of pass is connected with the 3rd tie point；The second switch and the 3rd switch second end with it is described isolated
The anode of the first end of direct current transducer is connected；It is described 4th switch and the 5th switch second end with the isolated DC
The cathode of the first end of converter is connected；
It is described 6th switch first end be connected with the anode of the series battery, it is described 6th switch second end with it is described
3rd tie point is connected；
The second end of the isolated DC converter is connected with the storage battery, the controlled end of the relay switch with it is described
The control terminal of MCU is connected, and the MCU is connected with the storage battery.
3. series-connected cell distribution type active nondissipative equalization circuit according to claim 2, it is characterised in that described
Isolated DC converter includes bidirectional, dc converter control chip and transformer.
4. series-connected cell distribution type active nondissipative equalization circuit according to claim 1, it is characterised in that described
Master control borad is connected with the distribution from plate by CAN bus.
5. series-connected cell distribution type active nondissipative equalization circuit according to claim 4, it is characterised in that described
CAN bus includes ISO11898 protocol bus and/or SAE J1939 protocol bus.
6. series-connected cell distribution type active nondissipative equalization circuit according to claim 1, it is characterised in that described
Storage battery is 12V or 24V A-batteries.
7. according to claim 1-6 any one of them series-connected cell distribution type active nondissipative equalization circuits, its feature
It is, the power supply circuit is harness or PCB circuits.
8. according to claim 2-3 any one of them series-connected cell distribution type active nondissipative equalization circuits, its feature
It is, the MCU is 16 control chips.
9. a kind of battery pack, it is characterised in that actively non-including claim 1-8 any one of them series-connected cells distribution type
Dissipative equalization circuit.
10. a kind of automobile, it is characterised in that including the battery pack described in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720574751.3U CN207225102U (en) | 2017-05-22 | 2017-05-22 | Series-connected cell distribution type active nondissipative equalization circuit, battery pack and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720574751.3U CN207225102U (en) | 2017-05-22 | 2017-05-22 | Series-connected cell distribution type active nondissipative equalization circuit, battery pack and automobile |
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| Publication Number | Publication Date |
|---|---|
| CN207225102U true CN207225102U (en) | 2018-04-13 |
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ID=61838330
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720574751.3U Active CN207225102U (en) | 2017-05-22 | 2017-05-22 | Series-connected cell distribution type active nondissipative equalization circuit, battery pack and automobile |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107215221A (en) * | 2017-05-22 | 2017-09-29 | 惠州亿纬锂能股份有限公司 | Series-connected cell distribution type active nondissipative equalization circuit, battery pack and automobile |
| CN110911768A (en) * | 2019-12-09 | 2020-03-24 | 荣盛盟固利新能源科技有限公司 | Novel battery management system |
-
2017
- 2017-05-22 CN CN201720574751.3U patent/CN207225102U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107215221A (en) * | 2017-05-22 | 2017-09-29 | 惠州亿纬锂能股份有限公司 | Series-connected cell distribution type active nondissipative equalization circuit, battery pack and automobile |
| CN107215221B (en) * | 2017-05-22 | 2023-09-05 | 惠州亿纬锂能股份有限公司 | Series battery distributed active non-dissipative equalization circuit, battery and automobile |
| CN110911768A (en) * | 2019-12-09 | 2020-03-24 | 荣盛盟固利新能源科技有限公司 | Novel battery management system |
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