CN105098845A - Battery management system - Google Patents
Battery management system Download PDFInfo
- Publication number
- CN105098845A CN105098845A CN201410150791.6A CN201410150791A CN105098845A CN 105098845 A CN105098845 A CN 105098845A CN 201410150791 A CN201410150791 A CN 201410150791A CN 105098845 A CN105098845 A CN 105098845A
- Authority
- CN
- China
- Prior art keywords
- battery pack
- transformer
- battery
- triode
- switches set
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a battery management system, which is used for balancing electric quantity of at least two battery packs, wherein each battery pack comprises at least two single batteries. The battery management system comprises a central control unit and battery management units corresponding to each battery pack, wherein the central control unit and each battery management unit are connected through a CAN bus, the battery management units are used for carrying out battery electric quantity equalization for the single batteries of the corresponding battery pack, and the central control unit is used for carrying out electric quantity equalization between the battery packs. Through the mode disclosed by the invention, the battery management system can realize electric quantity equalization in each battery pack and can realize electric quantity equalization between the battery packs at the same time, thereby effectively improving the electric quantity equalization effect.
Description
Technical field
The present invention relates to field of battery management, particularly relate to a kind of battery management system.
Background technology
In existing cell art, storage battery because of be a kind ofly to power conveniently, safe and reliable DC energy source and being widely used in every field.Electric energy conversion can be that chemical energy stores by storage battery, can be electric energy by converts chemical energy in use.But because storage battery is a kind of chemical reaction equipment, the chemical reaction of its inside is generally difficult to discover in time, and the defect in routine use often needs to use for a long time and frequently just can display.Moreover, the chemical characteristic of storage battery determines that the scope of its operating voltage has strict restriction, when the operating voltage of storage battery can produce security incident higher than during ceiling voltage limits value, when the operating voltage of storage battery can produce irreversible reaction lower than during minimum voltage limits value, thus easily damage storage battery.
In the conventional technology, generally on-line monitoring is adopted to the failure diagnosis of storage battery.On-line monitoring is mainly based on RS-232(universal serial bus) bus or RS-485 bus carry out electric quantity balancing to storage battery.But these methods can only adopt master-slave system structure, collect data with polling mode, not there is active negotiation ability.And electric quantity balancing weak effect, the electric quantity balancing between battery cell can only be realized, the electric quantity balancing between battery pack cannot be realized.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of battery management system, can realize the electric quantity balancing in battery pack group and between battery pack group, and cost is low, reliability is high, can effectively promote electric quantity balancing effect.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: provide a kind of battery management system, for carrying out electric quantity balancing at least two Battery pack groups, each battery pack comprises at least two battery cells, battery management system comprises central control unit and corresponds to the battery management unit of each battery pack, be connected by CAN between central control unit with each battery management unit, battery management unit is used for the interior electric quantity balancing of battery cell group in corresponding battery pack, central control unit is used for electric quantity balancing between battery pack group.
Wherein, battery management unit is for gathering the state information of each battery cell in battery pack, and determine the battery cell that need carry out electric quantity balancing according to the state information of battery cell, and control the high battery cell of the electricity battery cell group interior electric quantity balancing low to electricity.
Wherein, state information at least comprises the one in magnitude of voltage, current value and temperature value.
Wherein, central control unit is used for the total state information being obtained each battery pack by CAN from battery management unit, and determine according to total state information of battery pack the battery pack need carrying out electric quantity balancing, and control the high battery pack of electricity to electric quantity balancing between electricity low battery pack group.
Wherein, battery management unit comprises the first microcontroller, first transformer, first triode, first electric capacity, second electric capacity, 3rd electric capacity, at least two the first switches set that quantity is corresponding with the battery cell in battery pack and at least two second switch groups, first transformer comprises primary coil and secondary coil, the two ends of primary coil of the first transformer are connected with the two ends of the first electric capacity respectively, and be connected with the two poles of the earth of each battery cell by the first corresponding switches set, the two ends of the secondary coil of the first transformer are connected with the two ends of the second electric capacity respectively, and be connected with the two poles of the earth of each battery cell by corresponding second switch group, first triode is series between multiple first switches set and primary coil of the first transformer, first microcontroller connects battery pack respectively, first switches set and second switch group, and the control end connection of the first triode is connected by the 3rd electric capacity, the state information of each battery cell in battery pack is collected at the first microcontroller, and when determining to carry out the battery cell of electric quantity balancing according to the state information of battery cell, the first switches set that the battery cell that first microprocessor controls electricity is high is corresponding is connected to primary coil of the first transformer, and control the secondary coil that second switch group corresponding to the low battery cell of electricity is connected to the first transformer, and by control first triode intermittent conduction, with the battery cell making electricity high in the first triode ON stage by electrical power storage primary coil at the first transformer, and at the first triode dwell period, by the secondary coil of the first transformer be electricity low battery cell charging.
Wherein, battery management unit comprises the first feedback unit further, first feedback unit is series between the secondary coil of the first transformer and second switch group, first microcontroller connects the first feedback unit, and control the first duty ratio of the first triode according to the current information of the first feedback unit feedback, to make conducting by the first Duty ratio control first triode and closedown.
Wherein, battery management unit comprises the first diode further, and the first Diode series, between the secondary coil and second switch group of the first transformer, pours in down a chimney secondary coil to the first transformer to avoid the electric current of battery cell.
Wherein, central control unit comprises the second microcontroller, second transformer, second triode, 4th electric capacity, 5th electric capacity, 6th electric capacity, at least two the 3rd switches set that quantity is corresponding with battery pack and at least two the 4th switches set, second transformer comprises primary coil and secondary coil, the two ends of primary coil of the second transformer are connected with the two ends of the 4th electric capacity respectively, and be connected with the two poles of the earth of each battery pack by the 3rd corresponding switches set, the two ends of the secondary coil of the second transformer are connected with the two ends of the 5th electric capacity respectively, and be connected with the two poles of the earth of each battery pack by the 4th corresponding switches set, second triode is series between multiple 3rd switches set and primary coil of the second transformer, second microcontroller connects the first microcontroller respectively, 3rd switches set and the 4th switches set, and the control end connection of the second triode is connected by the 6th electric capacity, obtained total state information of each battery pack from battery management unit by CAN at central control unit, and when determining to carry out the battery pack of electric quantity balancing according to total state information of battery pack, described 3rd switches set corresponding to the battery pack that the second microprocessor controls electricity is high is connected to primary coil of the second transformer, and control the secondary coil that the 4th switches set corresponding to the low battery pack of electricity is connected to the second transformer, and by control second triode intermittent conduction, with the battery pack making electricity high in the second triode ON stage by electrical power storage primary coil at the second transformer, and at the second triode dwell period, be the batteries charging that electricity is low by the secondary coil of the second transformer.
Wherein, central control unit comprises the second feedback unit further, second feedback unit is series between the secondary coil of the second transformer and the 4th switches set, second microcontroller connects the second feedback unit, and control the second duty ratio of the second triode according to the current information of the second feedback unit feedback, to make conducting by the second Duty ratio control second triode and closedown.
Wherein, central control unit comprises the second diode further, and the second Diode series, between the secondary coil and the 4th switches set of the second transformer, pours in down a chimney secondary coil to the second transformer to avoid the electric current of battery pack.
The invention has the beneficial effects as follows: the situation being different from prior art, battery management unit of the present invention is by gathering the state information of each battery cell in battery pack, determine the battery cell that need carry out electric quantity balancing according to the state information of battery cell, and the battery cell controlling the high battery cell of electricity low to electricity charges; Simultaneously, central control unit obtains total state information of each battery pack from battery management unit by CAN, determine according to total state information of battery pack the battery pack need carrying out electric quantity balancing, and the battery pack controlling the high battery pack of electricity low to electricity is charged.By the way, battery management system of the present invention can to realize battery pack normally works in battery pack group and electric quantity balancing between group more accurately when not affecting, and cost is low, reliability is high, can effectively promote electric quantity balancing effect.
Accompanying drawing explanation
Fig. 1 is the structural representation that battery management system of the present invention is connected with battery pack;
Fig. 2 is the structural representation that the battery management unit in Fig. 1 is connected with battery pack;
Fig. 3 is the structural representation that the central control unit in Fig. 1 is connected with battery pack.
Embodiment
Consult Fig. 1, Fig. 1 is the structural representation that battery management system of the present invention is connected with battery pack.Battery management system is used for carrying out electric quantity balancing at least two Battery pack group M, and each battery pack M comprises at least two battery cell B.In the present embodiment, battery pack M preferably includes 12 battery cell B1-B12, and battery cell B is preferably storage battery, and certainly, in other embodiments, battery cell B can also can the battery of discharge and recharge for other.Battery management system comprises at least two battery management units 11 and central control unit 12.Each battery management unit 11 corresponds to each battery pack M, and battery management unit 11 connects with corresponding battery pack M, is connected between central control unit 12 with each battery management unit 11 by CAN 13.Preferably, central control unit 12 is connected with each battery management unit 11 with the second CAN 132 by the first CAN 131.Certainly, central control unit 12 can also be connected with battery management unit 11 by other buses.Wherein, battery management unit 11 is for the interior electric quantity balancing of battery cell B group in corresponding battery pack M, and central control unit 12 is for electric quantity balancing between battery pack M group.
Battery management unit 11 is for gathering the state information of each battery cell B in battery pack M, and determine the battery cell B that need carry out electric quantity balancing according to the state information of battery cell B, and control the high battery cell B of the electricity battery cell B group interior electric quantity balancing low to electricity.In the present embodiment, state information at least comprises the one in magnitude of voltage, current value and temperature value.
The structural representation that the battery management unit in Fig. 1 is connected with battery pack please also refer to Fig. 2, Fig. 2.Battery management unit 11 comprises the first microcontroller 111, first transformer 112, first feedback unit 113, first diode D1, the first triode Q1, the first electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3, quantity first switches set 114 corresponding with the battery cell B in battery pack M and second switch group 115.First transformer 112 comprises primary coil Np1 and secondary coil Ns1, and the first switches set 114 is at least 2, and second switch group 115 is at least 2.Wherein, the first switches set 114 comprises the first switch A1 and second switch A2; Second switch group 115 comprises the 3rd switch A3 and the 4th switch A4.Between the secondary coil Ns1 that first diode D1 is series at the first transformer 112 and second switch group 115, pour in down a chimney secondary coil Ns1 to the first transformer 112 to avoid the electric current of battery cell B.
First microcontroller 111 is connected with one end of the first feedback unit 113, the 3rd electric capacity C3, battery pack M, the first switches set 114 and second switch group 115 respectively.First feedback unit 113 is connected with the side of one end of the second electric capacity C2, one end of the secondary coil Ns1 of the first transformer 112 and the 4th switch A4 of second switch group 115 respectively.The other end of the second electric capacity C2 is connected with the side of the negative pole end of the first diode D1 and the 3rd switch A3 of second switch group 115 respectively.The positive terminal of the first diode D1 is connected with the other end of the secondary coil Ns1 of the first transformer 112.The opposite side of the 3rd switch A3 of second switch group 115 is connected with the positive terminal of respective battery monomers B; The opposite side of the 4th switch A4 of second switch group 115 is connected with the negative pole end of respective battery monomers B.
One end of primary coil Np1 of the first transformer 112 is connected with the side of one end of the first electric capacity C1 and the first switch A1 of the first switches set 114 respectively.The other end of primary coil Np1 of the first transformer 112 is connected with the other end of the first electric capacity C1 and first pin of the first triode Q1 respectively.Second pin of the first triode Q1 is connected with the other end of the 3rd electric capacity C3.The three-prong of the first triode Q1 is connected with the side of the second switch A2 of the first switches set 114.The opposite side of the first switch A1 of the first switches set 114 is connected with the positive terminal of respective battery monomers B.The opposite side of the second switch A2 of the first switches set 114 is connected with the negative pole end of respective battery monomers B.
In the present embodiment, the first triode Q1 is NMOS tube, and first pin of the first triode Q1 is drain electrode, and second pin of the first triode Q1 is grid, i.e. control end, and the three-prong of the first triode Q1 is source electrode.
Central control unit 12 is for obtaining total state information of each battery pack M from battery management unit 11 by CAN 13, and determine the battery pack M that need carry out electric quantity balancing according to total state information of battery pack M, and control the high battery pack M of electricity to electric quantity balancing between electricity low battery pack M group.
The structural representation that the central control unit in Fig. 1 is connected with battery pack please also refer to Fig. 3, Fig. 3.Central control unit 12 comprises the second microcontroller 121, second transformer 122, second feedback unit 123, second diode D2, the second triode Q2, the 4th electric capacity C4, the 5th electric capacity C5, the 6th electric capacity C6, quantity three switches set 124 corresponding with battery pack M and the 4th switches set 125.Second transformer 122 comprises primary coil Np2 and secondary coil Ns2, and the 3rd switches set 124 is at least 2, and the 4th switches set 125 is at least 2.Wherein, the 3rd switches set 124 comprises the 5th switch E1 and the 6th switch E2; 4th switches set 125 comprises the 7th switch E3 and the 8th switch E4.Second diode D2 is series between the secondary coil Ns2 of the second transformer 122 and the 4th switches set 125, pours in down a chimney secondary coil Ns2 to the second transformer 122 to avoid the electric current of battery pack M.
Second microcontroller 121 is connected with the first microcontroller 111 of battery management unit 11 by CAN 13.In the present embodiment, the second microcontroller 121 is connected with the first microcontroller 111 with the second CAN 132 by the first CAN 131.Certainly, in other embodiments, the second microcontroller 121 can also be connected with the first microcontroller 111 by other buses.
Second microcontroller 121 is connected with one end of the second feedback unit 123, the 6th electric capacity C6, the 3rd switches set 124 and the 4th switches set 125 respectively.Second feedback unit 123 is connected with the side of one end of the 5th electric capacity C5, one end of the secondary coil Ns2 of the second transformer 122 and the 8th switch E4 of the 4th switches set 125 respectively.The other end of the 5th electric capacity C5 is connected with the side of the negative pole end of the second diode D2 and the 7th switch E3 of the 4th switches set 125 respectively.The positive terminal of the second diode D2 is connected with the other end of the secondary coil Ns2 of the second transformer 122.The opposite side of the 7th switch E3 of the 4th switches set 125 is connected with the positive terminal of corresponding battery pack M.The opposite side of the 8th switch E4 of the 4th switches set 125 is connected with the negative pole end of corresponding battery pack M.
One end of primary coil Np2 of the second transformer 122 is connected with the side of one end of the 4th electric capacity C4 and the 5th switch E1 of the 3rd switches set 124 respectively.The other end of primary coil Np2 of the second transformer 122 is connected with the other end of the 4th electric capacity C4 and first pin of the second triode Q2 respectively.Second pin of the second triode Q2 is connected with the other end of the 6th electric capacity C6.The three-prong of the second triode Q2 is connected with the side of the 6th switch E2 of the 3rd switches set 124.The opposite side of the 5th switch E1 of the 3rd switches set 124 is connected with the positive terminal of battery pack M.The opposite side of the 6th switch E2 of the 3rd switches set 124 is connected with the negative pole end of battery pack M.
In the present embodiment, the second triode Q2 is NMOS tube, and first pin of the second triode Q2 is drain electrode, and second pin of the second triode Q2 is grid, i.e. control end, and the three-prong of the second triode Q2 is source electrode.
Be described below in conjunction with the operation principle of embodiment to battery management system.
Not carry out in group and between group during electric quantity balancing, the 7th switch E3 and the 8th switch E4 of the 5th switch E1 of the 3rd switch A3 of the first switch A1 of the first switches set 114 and second switch A2, second switch group 115 and the 4th switch A4, the 3rd switches set 124 and the 6th switch E2 and the 4th switches set 125 disconnect at battery pack M.
When battery pack M carries out organizing interior electric quantity balancing: the first microcontroller 111 gathers the state information of each battery cell B in battery pack M.First microcontroller 111 determines the battery cell B that need carry out electric quantity balancing according to the state information of battery cell B.As determined, the first battery cell B1 be the battery cell B that electricity is high, the 12 battery cell B12 is the battery cell B that electricity is low.First microcontroller 111 controls the first switch A1 of the first switches set 114 corresponding to the first battery cell B1 and second switch A2 and closes; First microcontroller 111 controls the 3rd switch A3 of second switch group 115 corresponding to the 12 battery cell B12 and the 4th switch A4 and closes.First microcontroller 111 exports the first duty ratio to the 3rd electric capacity C3 simultaneously, the first triode Q1 conducting when the first level of the first duty ratio, to make the first battery cell B1 in the first triode Q1 conducting phase by primary coil Np1 of electrical power storage at the first transformer 112; The first triode Q1 not conducting when the second electrical level of the first duty ratio, to make at the first triode Q1 dwell period, is that the 12 battery cell B12 charges by the secondary coil Ns1 of the first transformer 112.
In addition, in first feedback unit 113 Real-time Feedback group, the first transformer 112 is current information to the first microcontroller 111 that the 12 battery cell B12 charges, first microcontroller 111 controls first duty ratio of the first triode Q1 according to the current information that the first feedback unit 113 feeds back, and exporting constant current to make control first transformer 112 is that the 12 battery cell B12 charges.In the present embodiment, the first level of the first duty ratio is high level, and the second electrical level of the first duty ratio is low level.Certainly, in other embodiments, the first level can also be needed to be set to low level according to control, second electrical level is high level.
When between battery pack M group during electric quantity balancing: the second microcontroller 121 Active and Real-time obtains total state information of each battery pack M by the first CAN 131 and the second CAN 132 from the first microcontroller 111, or the first microcontroller 111 Active and Real-time sends total state information of each battery pack M to second microcontroller 121 by the first CAN 131 and the second CAN 132.Second microcontroller 121 determines the battery pack M that need carry out electric quantity balancing according to total state information of battery pack M.As determined, the first battery pack M1 be the battery pack M that electricity is high, N battery pack Mn is the battery pack M that electricity is low.Second microcontroller 121 controls the 5th switch E1 of the 3rd switches set 124 corresponding to the first battery pack M1 and the 6th switch E2 and closes; Second microcontroller 121 controls the 7th switch E3 of the 4th switches set 125 corresponding to N battery pack Mn and the 8th switch E4 and closes.Second microcontroller 121 exports the second duty ratio to the 6th electric capacity C6 simultaneously, the second triode Q2 conducting when the first level of the second duty ratio, to make the first battery pack M1 in the second triode Q2 conducting phase by primary coil Np2 of electrical power storage at the second transformer 122; The second triode Q2 not conducting when the second electrical level of the second duty ratio, to make at the second triode Q2 dwell period, is that N battery pack Mn charges by the secondary coil Ns2 of the second transformer 122.
In addition, between the second feedback unit 123 Real-time Feedback group, the second transformer 122 is current information to the second microcontroller 121 that N battery pack Mn charges, second microcontroller 121 controls second duty ratio of the second triode Q2 according to the current information that the second feedback unit 123 feeds back, and exporting constant current to make control second transformer 122 is that N battery pack Mn charges.In the present embodiment, the first level of the second duty ratio is high level, and the second electrical level of the second duty ratio is low level.Certainly, in other embodiments, the first level can also be needed to be set to low level according to control, second electrical level is high level.
In the present embodiment, based on the battery management system of CAN 13, by on line real-time monitoring battery pack M, in the group that can realize separately battery pack M electric quantity balancing and battery pack M group between electric quantity balancing, in the group that also simultaneously can realize battery pack M electric quantity balancing and battery pack M group between electric quantity balancing.The features such as CAN 13 is a kind of many host computer control local area network standards, has the procotol of physical layer and data link layer, and many host nodes, loss arbitration, high reliability and expansion performance are good.Based on CAN 13 battery management system can continuous and effective carry out big current electric quantity balancing, and the whole service life of battery cell B and battery pack M can be controlled.Battery management system simultaneously based on CAN 13 can the operating state of reliably on-line monitoring battery pack M and health status, be convenient to the maintenance of battery pack M and ensure security of operation, larger electric quantity balancing is realized when there is no thermal losses, not only solve the reliable on-line monitoring of battery pack M, also solve the electric quantity balancing problem between battery cell B and battery pack M.
In sum, battery management unit of the present invention is by gathering the state information of each battery cell in battery pack, determine the battery cell that need carry out electric quantity balancing according to the state information of battery cell, and the battery cell controlling the high battery cell of electricity low to electricity charges; Simultaneously, central control unit obtains total state information of each battery pack from battery management unit by CAN, determine according to total state information of battery pack the battery pack need carrying out electric quantity balancing, and the battery pack controlling the high battery pack of electricity low to electricity is charged.By the way, battery management system of the present invention can to realize battery pack normally works in battery pack group and electric quantity balancing between group more accurately when not affecting, and cost is low, reliability is high, can effectively promote electric quantity balancing effect.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize specification of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. a battery management system, for carrying out electric quantity balancing at least two Battery pack groups, battery pack described in each comprises at least two battery cells, it is characterized in that, described battery management system comprises central control unit and corresponds to the battery management unit of battery pack described in each, described central control unit is connected by CAN between battery management unit with described in each, described battery management unit is used for the interior electric quantity balancing of battery cell group in corresponding described battery pack, described central control unit is used for electric quantity balancing between described battery pack group.
2. battery management system according to claim 1, it is characterized in that, described battery management unit is for gathering the state information of battery cell described in each in described battery pack, and determine the described battery cell that need carry out electric quantity balancing according to the state information of described battery cell, and control the high described battery cell of the electricity described battery cell group interior electric quantity balancing low to electricity.
3. battery management system according to claim 2, is characterized in that, described state information at least comprises the one in magnitude of voltage, current value and temperature value.
4. battery management system according to claim 2, it is characterized in that, described central control unit is used for the total state information being obtained battery pack described in each by described CAN from described battery management unit, and determine according to total state information of described battery pack the described battery pack need carrying out electric quantity balancing, and control the high described battery pack of electricity to electric quantity balancing between electricity low described battery pack group.
5. battery management system according to claim 4, it is characterized in that, described battery management unit comprises the first microcontroller, first transformer, first triode, first electric capacity, second electric capacity, 3rd electric capacity, at least two the first switches set that quantity is corresponding with the battery cell in described battery pack and at least two second switch groups, described first transformer comprises primary coil and secondary coil, the two ends of primary coil of described first transformer are connected with the two ends of described first electric capacity respectively, and be connected with the two poles of the earth of battery cell described in each by corresponding described first switches set, the two ends of the secondary coil of described first transformer are connected with the two ends of described second electric capacity respectively, and be connected with the two poles of the earth of battery cell described in each by corresponding described second switch group, described first triode is series between described multiple first switches set and primary coil of described first transformer, described first microcontroller connects described battery pack respectively, described first switches set and described second switch group, and the control end connection of described first triode is connected by described 3rd electric capacity,
The state information of battery cell described in each in described battery pack is collected at described first microcontroller, and when determining to carry out the described battery cell of electric quantity balancing according to the state information of described battery cell, described first switches set that the described battery cell that described first microprocessor controls electricity is high is corresponding is connected to primary coil of described first transformer, and control the secondary coil that second switch group corresponding to the low described battery cell of electricity is connected to described first transformer, and by controlling described first triode intermittent conduction, with the described battery cell making electricity high in the described first triode ON stage by electrical power storage primary coil at described first transformer, and at described first triode dwell period, be the described battery cell charging that electricity is low by the secondary coil of described first transformer.
6. battery management system according to claim 5, it is characterized in that, described battery management unit comprises the first feedback unit further, described first feedback unit is series between the secondary coil of described first transformer and described second switch group, described first microcontroller connects described first feedback unit, and control the first duty ratio of described first triode according to the current information of described first feedback unit feedback, to make conducting by the first triode described in described first Duty ratio control and closedown.
7. battery management system according to claim 6, it is characterized in that, described battery management unit comprises the first diode further, described first Diode series, between the secondary coil and described second switch group of described first transformer, pours in down a chimney secondary coil to described first transformer to avoid the electric current of described battery cell.
8. battery management system according to claim 5, it is characterized in that, described central control unit comprises the second microcontroller, second transformer, second triode, 4th electric capacity, 5th electric capacity, 6th electric capacity, at least two the 3rd switches set that quantity is corresponding with described battery pack and at least two the 4th switches set, described second transformer comprises primary coil and secondary coil, the two ends of primary coil of described second transformer are connected with the two ends of described 4th electric capacity respectively, and be connected with the two poles of the earth of battery pack described in each by corresponding described 3rd switches set, the two ends of the secondary coil of described second transformer are connected with the two ends of described 5th electric capacity respectively, and be connected with the two poles of the earth of battery pack described in each by corresponding described 4th switches set, described second triode is series between described multiple 3rd switches set and primary coil of described second transformer, described second microcontroller connects described first microcontroller respectively, described 3rd switches set and described 4th switches set, and the control end connection of described second triode is connected by described 6th electric capacity,
Obtained total state information of battery pack described in each from described battery management unit by described CAN at described central control unit, and when determining to carry out the described battery pack of electric quantity balancing according to total state information of described battery pack, described 3rd switches set corresponding to the described battery pack that described second microprocessor controls electricity is high is connected to primary coil of described second transformer, and control the secondary coil that the 4th switches set corresponding to the low described battery pack of electricity is connected to described second transformer, and by controlling described second triode intermittent conduction, with the described battery pack making electricity high in the described second triode ON stage by electrical power storage primary coil at described second transformer, and at described second triode dwell period, be the described batteries charging that electricity is low by the secondary coil of described second transformer.
9. battery management system according to claim 8, it is characterized in that, described central control unit comprises the second feedback unit further, described second feedback unit is series between the secondary coil of described second transformer and described 4th switches set, described second microcontroller connects described second feedback unit, and control the second duty ratio of described second triode according to the current information of described second feedback unit feedback, to make conducting by the second triode described in described second Duty ratio control and closedown.
10. battery management system according to claim 9, it is characterized in that, described central control unit comprises the second diode further, described second Diode series, between the secondary coil and described 4th switches set of described second transformer, pours in down a chimney secondary coil to described second transformer to avoid the electric current of described battery pack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410150791.6A CN105098845B (en) | 2014-04-15 | 2014-04-15 | Battery management system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410150791.6A CN105098845B (en) | 2014-04-15 | 2014-04-15 | Battery management system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105098845A true CN105098845A (en) | 2015-11-25 |
| CN105098845B CN105098845B (en) | 2018-06-26 |
Family
ID=54578693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410150791.6A Active CN105098845B (en) | 2014-04-15 | 2014-04-15 | Battery management system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105098845B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105552459A (en) * | 2016-01-26 | 2016-05-04 | 宁波市北仑海伯精密机械制造有限公司 | Power battery pack structure |
| CN110323802A (en) * | 2019-06-06 | 2019-10-11 | 北京中宸泓昌科技有限公司 | A kind of charging equalization apparatus and method of energy-storage system |
| CN116365064A (en) * | 2023-03-13 | 2023-06-30 | 四川欣智造科技有限公司 | Container energy storage flexible battery management system and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030096978A (en) * | 2002-06-18 | 2003-12-31 | 오세광 | A Management System for the Rechargeable Battery |
| CN102208822A (en) * | 2010-03-29 | 2011-10-05 | 三洋电机株式会社 | Power supply device and vehicle provided with the same |
| CN102222957A (en) * | 2011-06-21 | 2011-10-19 | 清华大学深圳研究生院 | Automatic battery capacity equalization circuit and implementing method thereof |
| CN103066665A (en) * | 2013-01-18 | 2013-04-24 | 同济大学 | Active balancing circuit of power Li-ion battery module and balancing method thereof |
| CN203896002U (en) * | 2014-04-15 | 2014-10-22 | 东莞钜威新能源有限公司 | Battery management system |
-
2014
- 2014-04-15 CN CN201410150791.6A patent/CN105098845B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030096978A (en) * | 2002-06-18 | 2003-12-31 | 오세광 | A Management System for the Rechargeable Battery |
| CN102208822A (en) * | 2010-03-29 | 2011-10-05 | 三洋电机株式会社 | Power supply device and vehicle provided with the same |
| CN102222957A (en) * | 2011-06-21 | 2011-10-19 | 清华大学深圳研究生院 | Automatic battery capacity equalization circuit and implementing method thereof |
| CN103066665A (en) * | 2013-01-18 | 2013-04-24 | 同济大学 | Active balancing circuit of power Li-ion battery module and balancing method thereof |
| CN203896002U (en) * | 2014-04-15 | 2014-10-22 | 东莞钜威新能源有限公司 | Battery management system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105552459A (en) * | 2016-01-26 | 2016-05-04 | 宁波市北仑海伯精密机械制造有限公司 | Power battery pack structure |
| CN105552459B (en) * | 2016-01-26 | 2018-05-25 | 宁波海伯集团有限公司 | Power battery pack structure |
| CN110323802A (en) * | 2019-06-06 | 2019-10-11 | 北京中宸泓昌科技有限公司 | A kind of charging equalization apparatus and method of energy-storage system |
| CN116365064A (en) * | 2023-03-13 | 2023-06-30 | 四川欣智造科技有限公司 | Container energy storage flexible battery management system and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105098845B (en) | 2018-06-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9219366B2 (en) | Energy storage device and method for decreasing rush current | |
| JP6522890B2 (en) | Battery rack and method of driving the same | |
| CN104247201B (en) | Accumulating system and box | |
| CN103606943B (en) | A kind of microgrid Ni-MH battery energy storage system | |
| JP2014212691A (en) | Battery equalization device and method | |
| CN107370201B (en) | Direct-current power supply system based on storage battery series-parallel combination | |
| CN104079052A (en) | Direct-current charging system of electric automobile | |
| CN105140996A (en) | Lithium ion battery pack equalization management system and equalization control method | |
| CN203967811U (en) | Electric automobile DC charging system | |
| CN104242374B (en) | Charge-discharge control circuit and cell apparatus | |
| CN102082312A (en) | High-capacity energy storage device | |
| CN207442455U (en) | A kind of voltage balance circuit for energy-storage system battery module | |
| CN107040021A (en) | A kind of battery modules series connection management circuit | |
| Lu et al. | Droop-control-based state-of-charge balancing method for charging and discharging process in autonomous DC microgrids | |
| CN203896002U (en) | Battery management system | |
| CN105098845A (en) | Battery management system | |
| CN209709744U (en) | A kind of communication base station power supply system that retired power battery echelon utilizes | |
| CN202978379U (en) | Direct current power supply system applied to 110KV substation | |
| CN109755948A (en) | Voltage balance circuit and its voltage balancing method for energy-storage system battery module | |
| CN203086174U (en) | Multi-in-series high-voltage lithium battery pack equalizing device | |
| CN204334104U (en) | A kind of wireless sensor network node of multiple-energy-source mode power | |
| CN106602653B (en) | A kind of lithium ion battery non-dissipative equalizing circuit | |
| CN204615463U (en) | A kind of electrokinetic cell active equalization charging device | |
| CN107632269A (en) | The online charging-discharge tester system of communication storage battery | |
| CN103915875A (en) | Lithium battery charging and discharging control system for novel solar street lamp |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20160629 Address after: 523808, Guangdong District, Songshan hi tech Industrial Development Zone, Dongguan, seven industrial North Road, 1 force science and technology center, 3 floor, B District Applicant after: Dongguan Powerwise Technology Co., Ltd. Address before: 523808 productivity building, Songshan science and Technology Industrial Park, Guangdong, Dongguan Province, room 401-403 Applicant before: Dongguan PowerWise New Energy Co., Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201013 Address after: 310000 2 and 3 / F, building 3, No. 1418-50, Moganshan Road, Hangzhou, Zhejiang Province (Shangcheng science and technology industrial base) Patentee after: HANGZHONG HUASU JADA TECHNOLOGY Co.,Ltd. Address before: 523808, Guangdong District, Songshan hi tech Industrial Development Zone, Dongguan, seven industrial North Road, 1 force science and technology center, 3 floor, B District Patentee before: DONGGUAN POWERWISE TECHNOLOGY Co. |
|
| TR01 | Transfer of patent right | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 310000 2 and 3 / F, building 3, No. 1418-50, Moganshan Road, Hangzhou, Zhejiang Province (Shangcheng science and technology industrial base) Patentee after: Hangzhou HuaSu Technology Co., Ltd Address before: 310000 2 and 3 / F, building 3, No. 1418-50, Moganshan Road, Hangzhou, Zhejiang Province (Shangcheng science and technology industrial base) Patentee before: HANGZHONG HUASU JADA TECHNOLOGY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |