CN107240946A - Active equalization device for battery pack - Google Patents
Active equalization device for battery pack Download PDFInfo
- Publication number
- CN107240946A CN107240946A CN201710548860.2A CN201710548860A CN107240946A CN 107240946 A CN107240946 A CN 107240946A CN 201710548860 A CN201710548860 A CN 201710548860A CN 107240946 A CN107240946 A CN 107240946A
- Authority
- CN
- China
- Prior art keywords
- voltage
- battery
- battery unit
- gate
- active equalization
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0016—Circuits for equalisation of charge between batteries using shunting, discharge or bypass circuits
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/46—Accumulators structurally combined with charging apparatus
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The present invention relates to lithium cell charging field, a kind of active equalization device for battery pack is disclosed, the active equalization device includes：Temperature sensor, the temperature for detecting the device；Siren；Voltage sensor, the voltage for detecting battery unit；Two gate-controlled switches, are connected with two battery cells in series；Between energy-storage travelling wave tube, the node between the node being connected between two battery units and two gate-controlled switches；Controller, is used for：Receive temperature and judged whether to start siren according to the temperature；Receive the voltage at battery unit two ends；Judge whether the voltage of a battery unit is more than the voltage of another battery unit；In the case where the voltage for judging a battery unit is more than the voltage of another battery unit, corresponding first gate-controlled switch of the gate-controlled switch is closed so that a battery unit charges to energy-storage travelling wave tube；After charging terminates, the first gate-controlled switch is disconnected, the second gate-controlled switch is closed, another battery unit is charged.
Description
Technical field
The present invention relates to lithium cell charging field, and in particular to a kind of active equalization device for battery pack.
Background technology
In power domain, lithium battery is increasingly becoming electric automobile, storage with advantages such as its energy density height, small volume, environmental protection
The main flow power resources of energy and communication back-up source.
In actual use, lithium battery uses the form of battery pack.But lithium battery is in production due to environment, manufacturing machine
Small performance difference, can inevitably occur in the reason in terms of device, can which results in each lithium battery in lithium battery group
The different situation of the magnitude of voltage of every batteries can occur.After a number of uses, the voltage difference of these batteries can gradually increase, if
Equilibrium treatment is carried out not in time, and these inconsistencies constantly increased can cause the life-span of lithium battery group to exhaust in advance.
Balanced way common at present is to use passive equalizing circuit, and the passive equalizing circuit is mainly by every batteries
Monomer two ends one power resistor of parallel connection and switch, when certain economize on electricity cell voltage is higher, adhesive switch consumes part electricity, directly
To reaching equilibrium state.
Although such equalizing circuit can carry out equilibrium treatment to battery to a certain extent.But, due to equalized
Journey is to convert electrical energy into heat energy, and its radiation processes must just configure corresponding cooling device, and this is allowed in industrial production
Cost, which greatly increases and converts electrical energy into heat energy, can cause meaningless power wastage；In addition, if radiating is unreasonable,
Whole battery combination balance module temperature can be caused too high, the consequence for causing battery to accelerate decay and balance module to burn.And
And, due to when the bulk temperature of equalizing circuit is too high, the early warning mechanism not responded to, it is easy to cause battery because high temperature and
Damage and even explode, so that the life security to staff threatens.
The content of the invention
It is an object of the invention to provide a kind of active equalization device for battery pack, the active equalization device can be by lithium
Electricity in battery pack in the high lithium battery of voltage is transformed into the low lithium battery of voltage, be instead of and is converted electrical energy into heat energy
Balanced flow, has saved the energy, while also reduce battery causes the life-span to exhaust too fast risk because of radiating improper.And
And, the device can also when the temperature of itself is too high signal an alert, so as to avoid battery because temperature is too high and damages
Bad the problem of.
To achieve these goals, embodiment of the present invention provides a kind of active equalization device for battery pack, battery
Group is made up of at least two battery units connected, and the active equalization device can include：Temperature sensor, for detecting actively
The temperature of balancer；Siren, for starting to notify staff；Voltage sensor, for detecting two battery units
In each battery unit two ends voltage；Two gate-controlled switches, two gate-controlled switches and two battery cells in series connect
Connect；Between energy-storage travelling wave tube, the node between the node being connected between two battery units and two gate-controlled switches；Controller,
For：Receive the temperature of the active equalization device and judged whether to start alarm device according to the temperature；Receiving voltage sensor
Detect the voltage at each battery unit two ends；Judge battery unit two ends in two battery units detecting
Whether voltage is more than the voltage at the two ends of another battery unit in two battery units；Two batteries detected in judgement
The voltage at a battery unit two ends in unit is more than the voltage at the two ends of another battery unit in two battery units
In the case of, close corresponding first gate-controlled switch of a battery unit so that a battery unit fills to energy-storage travelling wave tube
Electricity；After terminating to energy-storage travelling wave tube charging, the second gate-controlled switch in the first gate-controlled switch, two gate-controlled switches of closure is disconnected,
So that energy-storage travelling wave tube charges to another battery unit, with the voltage at balanced two battery two ends.
Alternatively, the controller can be used for：Judge whether the difference of the voltage at two battery unit two ends is more than to preset
Value；In the case where judging that the difference of voltage at two battery unit two ends is more than preset value, the first gate-controlled switch is closed, so that
The first battery unit is obtained to charge to energy-storage travelling wave tube.
Alternatively, the voltage at a battery unit two ends in two battery units for judging to detect is more than two electricity
In the case of the voltage at another battery unit two ends in pool unit, with a battery unit pair in two gate-controlled switches of closure
The first gate-controlled switch answered a so that battery unit can include to energy-storage travelling wave tube charging：If two battery unit two ends
The difference of voltage be reduced to the half of initial difference, then first gate-controlled switch is disconnected, to stop to the energy-storage travelling wave tube
Charging.Wherein, the initial difference is the difference of the voltage at described two battery unit two ends when starting to charge to the energy-storage travelling wave tube
Value.
Alternatively, controller can be also used for：The voltage at two battery unit two ends in battery pack is detected is all small
In the case of predetermined voltage, two battery units are not carried out balanced.
Alternatively, the gate-controlled switch can be electromagnetic relay.
Alternatively, the voltage sensor can be Hall voltage sensor.
Alternatively, the controller can be battery management system (Battery Management System, BMS).
By above-mentioned technical proposal, the active equalization device that the present invention is provided can be by the high lithium electricity of voltage in lithium battery group
Electricity in pond is transformed into the low lithium battery of voltage by capacitor shield coil, instead of the balanced stream for converting electrical energy into heat energy
Journey, has saved the energy, while also reduce battery causes the life-span to exhaust too fast risk because of radiating improper.Also, the dress
Put by setting the form of temperature sensor to monitor the temperature of itself.When own temperature is too high, police is sent to staff
Report, so as to avoid battery because temperature is too high and the problem of damage, has ensured the life security of staff.
Other features and advantages of the present invention will be described in detail in subsequent embodiment part.
Brief description of the drawings
Accompanying drawing is, for providing a further understanding of the present invention, and to constitute a part for specification, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the structured flowchart of the active equalization device for battery pack according to an embodiment of the present invention；
Fig. 2 is the structural representation of the active equalization device for battery pack according to an embodiment of the present invention；
Fig. 3 is the flow chart of the active equalization method for battery pack according to an embodiment of the present invention；
Fig. 4 is the flow chart of the active equalization method for battery pack according to an embodiment of the present invention；
Fig. 5 is the flow chart of the active equalization method for battery pack according to an embodiment of the present invention；
And
Fig. 6 is the flow chart of the active equalization method for battery pack according to an embodiment of the present invention.
Description of reference numerals
1st, controller 2, voltage sensor
3rd, temperature sensor 4, siren
B1, the first battery unit B2, the second battery unit
S1, the first gate-controlled switch S2, the second gate-controlled switch
5th, energy-storage travelling wave tube
Embodiment
The embodiment of the present invention is described in detail below in conjunction with accompanying drawing.It should be appreciated that this place is retouched
The embodiment stated is merely to illustrate and explain the present invention, and is not intended to limit the invention.
Fig. 1 is the structured flowchart of the active equalization device for battery pack according to an embodiment of the present invention.The electricity
Pond group can include two battery units (B1, B2) of series connection.In Fig. 1, the active equalization device can include：
Temperature sensor 3, the temperature for detecting active equalization device.The temperature sensor 3 can be condenser type temperature
Sensor, but it will be appreciated by those skilled in the art that be also applicable for other temperature sensors.
Siren 4, for starting to notify staff.The siren 4 can be LED signal lamp, but art technology
It is also applicable that personnel, which can be understood as the sirens such as buzzer,.
Voltage sensor 2, the voltage for detecting each battery unit two ends in two battery units.In fig. 2,
Two battery units are respectively the first battery unit B1 and the second battery unit B2.The voltage sensor 2 can be, for example, Hall
Voltage sensor, those skilled in the art are it also will be understood that other voltage sensors are also applicable.
Two gate-controlled switch (S1、S2), (in fig. 2, two gate-controlled switch S are first controllable to open for two gate-controlled switches
Close S1With the second gate-controlled switch S2) be connected in series with two battery units (the first battery unit B1 and the second battery unit B2).
Energy-storage travelling wave tube 5, the energy-storage travelling wave tube 5 is connected between the node between two battery units and two gate-controlled switch S
Node between.The energy-storage travelling wave tube 5 is at least one of inductor, capacitor.
Controller 1, can be used for the temperature for receiving the active equalization device detected, and judge whether according to the temperature
Start siren 4.In the present embodiment, for example, when the active equalization device temperature be higher than predetermined temperature when, controller
1 startup siren 4 notifies staff, thus avoid battery because temperature is too high and the problem of damage.
Fig. 2 is the structural representation of the active equalization device for battery pack according to an embodiment of the present invention.
In Fig. 2, two battery units can be the first battery unit B1 and the second battery unit B2.Two gate-controlled switch S can be the
One gate-controlled switch S1With the second gate-controlled switch S2。
The controller 1 can be also used for performing at least one in the active equalization method for battery pack as shown in Figure 2
Part steps.In figure 3, this method can include：
In step s 11, voltage sensor 2 detects the voltage at each battery unit two ends in two battery units.
In step s 12, the voltage at each battery unit two ends that the receiving voltage sensor of controller 1 is detected, sentences
It is another in two battery units whether the voltage at a battery unit two ends in disconnected two battery units detected is more than
The voltage at individual battery unit two ends.
In step s 13, the voltage at a battery unit two ends in two battery units for judging to detect is more than
In the case of the voltage at another battery unit two ends in two battery units, closure two gate-controlled switches in it is one
Battery unit is (in the present embodiment, it is assumed that the voltage at the first battery unit B1 two ends is more than the two of the second battery unit B2
The voltage at end) corresponding first gate-controlled switch S1So that a battery unit charges to energy-storage travelling wave tube 5.
In step S14, after terminating to the charging of energy-storage travelling wave tube 5, the first gate-controlled switch S is disconnected1, closure two is controllable to be opened
The second gate-controlled switch S in the Central Shanxi Plain2So that 5 couple of second battery unit B2 of energy-storage travelling wave tube charges, with balanced two battery units
The voltage at two ends.
In an embodiment of the invention, the controller 1 can be used for performing the as shown in Figure 4 battery pack that is used for
At least a portion step in active equalization method.The places different from the method shown in Fig. 3 are, the method shown in Fig. 3
In step S12, S13 be replaced by following steps：
In step S22, judge whether the difference of the voltage at two battery unit two ends is more than preset value；
In step S23, in the case where judging that the difference of voltage at two battery unit two ends is more than preset value, closure
First gate-controlled switch S1, to cause the first battery unit B1 to charge energy-storage travelling wave tube 5.
In one embodiment of the present invention, controller 1, which can be configured to perform, as shown in Figure 5 is used for battery pack
Active equalization method at least a portion step.It is that the method shown in Fig. 5 exists with the method difference shown in Fig. 4
Increase following steps between step S23 and step S24：
In step S34, if the difference of the voltage at two battery unit two ends is reduced to the half of initial difference, break
Open the first gate-controlled switch S1, to stop charging to energy-storage travelling wave tube 5, initial difference can be two when starting to charge to energy-storage travelling wave tube 5
The difference of the voltage at individual battery unit two ends.
In one embodiment of the present invention, controller 1, which can be configured to perform, as shown in Figure 6 is used for battery pack
Active equalization method at least a portion step.From unlike the method shown in Fig. 5, this method is in step S31 and step
Following steps are added between rapid S32：
In step S42, judge whether the voltage at the two ends of two battery units is both less than predetermined voltage.Predetermined voltage can
To be the magnitude of voltage of such as battery unit when battery unit is in low battery, the so brownout in two battery supplies
When (being less than predetermined voltage), operated without above-mentioned active equalization.
In the above embodiment, if the voltage at two battery unit two ends has reached equilibrium, storage can be disconnected
It can be associated between element 5 and two battery units and (for example disconnect gate-controlled switch S1And S2)。
In the above embodiment, the first gate-controlled switch S1With the second gate-controlled switch S2Electromagnetic relay can be selected,
But it will be appreciated by those skilled in the art that gate-controlled switch can also be triode, metal-oxide-semiconductor etc..
The voltage at the first battery unit B1 and the second battery unit B2 two ends can be detected by voltage sensor 2, and inspection
The magnitude of voltage measured can be sent to controller 1.Such as voltage sensor 2 detects the first electricity in battery pack respectively when in use
Pool unit B1 and the voltage at the second battery unit B2 two ends, and the voltage detected is sent to controller 1 (such as BMS).Such as
The voltage at the first battery unit B1 two ends that fruit detects is more than the second battery unit B2 both end voltages (for example, the first battery list
Voltage difference between first B1 and the second battery unit B2 is more than preset value), controller 1 controls the first gate-controlled switch S1Closure,
Second gate-controlled switch S2Disconnect, the first battery unit B1 starts to charge to energy-storage travelling wave tube 5.When giving the charging process of energy-storage travelling wave tube 5
In the first battery unit B1 voltage drop to some value, such as electricity between the first battery unit B1 and the second battery unit B2
Pressure difference is the half for initial difference, and controller 1 controls the first gate-controlled switch S1Disconnect and control the second gate-controlled switch S simultaneously2Close
Close, energy-storage travelling wave tube 5 charges to the second battery unit B2.When the first battery unit B1 and the second battery unit B2 voltage are equal or
Close to it is equal when, controller 1 can control the second gate-controlled switch S2Disconnect.Second battery unit B2 voltage is more than the first battery
The situation of the voltage of unit B 1 is similar to the above case, repeats no more.
By above technical scheme, the battery pack active equalization device that embodiments of the present invention are provided can be by voltage
Electricity in high battery is transformed into the low battery of voltage, instead of the equilibrium electricity that the electric energy being higher by is converted into heat energy at present
Road, has saved the energy, while also reduce battery causes the life-span to exhaust too fast risk because of radiating improper.Further, since
Temperature sensor is provided with the active equalization device, when active equalization device because breaking down causes unit temp too high
When, controller can also start siren and notify staff, so as to avoid battery because temperature is too high and the problem of damage, protects
The life security of staff is hindered.
The preferred embodiment of the present invention is described in detail above in association with accompanying drawing, still, the present invention is not limited to above-mentioned reality
The detail in mode is applied, in the range of the technology design of the present invention, a variety of letters can be carried out to technical scheme
Monotropic type, these simple variants belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should equally be considered as content disclosed in this invention.
Claims (7)
1. a kind of active equalization device for battery pack, battery pack includes two battery units of series connection, it is characterised in that institute
Stating active equalization device includes：
Temperature sensor, the temperature for detecting the active equalization device；
Siren；
Voltage sensor, the voltage for detecting each battery unit two ends in described two battery units；
Two gate-controlled switches, described two gate-controlled switches are connected with described two battery cells in series；
Energy-storage travelling wave tube, node between the node being connected between described two battery units and described two gate-controlled switches it
Between；
Controller, is used for：
Receive the temperature of the active equalization device and judged whether to start the siren according to the temperature；
The voltage sensor senses are received to the voltage at each battery unit two ends；
Judge whether the voltage at a battery unit two ends in the described two battery units detected is more than described two electricity
The voltage at another battery unit two ends in pool unit；
The voltage at a battery unit two ends in the described two battery units for judging to detect is more than described two batteries
In the case of the voltage at another battery unit two ends in unit, with one battery in the described two gate-controlled switches of closure
Corresponding first gate-controlled switch of unit so that one battery unit charges to the energy-storage travelling wave tube；
After terminating to energy-storage travelling wave tube charging, first gate-controlled switch is disconnected, second in described two gate-controlled switches is closed
Gate-controlled switch so that energy-storage travelling wave tube charges to another described battery unit, with the electricity at balanced described two battery two ends
Pressure.
2. active equalization device according to claim 1, it is characterised in that the controller is used for：
Judge whether the difference of the voltage at described two battery unit two ends is more than preset value；
In the case where judging that the difference of voltage at described two battery unit two ends is more than the preset value, closure described first
Gate-controlled switch, to cause one battery unit to charge the energy-storage travelling wave tube.
3. active equalization device according to claim 1, it is characterised in that the described two electricity detected in judgement
The voltage at a battery unit two ends in pool unit is more than another battery unit two ends in described two battery units
In the case of voltage, the first gate-controlled switch corresponding with one battery unit in described two gate-controlled switches is closed so that
One battery unit includes to energy-storage travelling wave tube charging：
If the difference of the voltage at described two battery unit two ends is reduced to the half of initial difference, disconnecting described first can
Control switch, to stop charging to the energy-storage travelling wave tube, the initial difference is two described in when starting to charge to the energy-storage travelling wave tube
The difference of the voltage at individual battery unit two ends.
4. active equalization device according to claim 1, it is characterised in that the controller is additionally operable to：
In the case where the voltage at two battery unit two ends in detecting the battery pack is both less than predetermined voltage, not to two
Individual battery unit carries out balanced.
5. active equalization device according to claim 1, it is characterised in that the gate-controlled switch is electromagnetic relay.
6. active equalization device according to claim 1, it is characterised in that the voltage sensor senses for Hall voltage
Device.
7. active equalization device according to claim 1, it is characterised in that the controller is battery management system BMS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710548860.2A CN107240946A (en) | 2017-07-07 | 2017-07-07 | Active equalization device for battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710548860.2A CN107240946A (en) | 2017-07-07 | 2017-07-07 | Active equalization device for battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107240946A true CN107240946A (en) | 2017-10-10 |
Family
ID=59991850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710548860.2A Pending CN107240946A (en) | 2017-07-07 | 2017-07-07 | Active equalization device for battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107240946A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109950647A (en) * | 2019-03-27 | 2019-06-28 | 联想(北京)有限公司 | A kind of battery system and processing method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102231550A (en) * | 2011-07-05 | 2011-11-02 | 张化锴 | Active charge/discharge balancing system of power battery and implementation method thereof |
| CN202503346U (en) * | 2012-03-30 | 2012-10-24 | 青岛艾迪森科技有限公司 | Intelligent automatic charging and repairing device for storage battery |
| CN103430420A (en) * | 2011-03-08 | 2013-12-04 | Ｅｖｔｄ株式会社 | Balance correction device and electricity storage system |
| CN104935057A (en) * | 2015-07-14 | 2015-09-23 | 国家电网公司 | Equalization method and equalization system for lithium ion battery pack |
| CN206908352U (en) * | 2017-07-07 | 2018-01-19 | 东莞中汽宏远汽车有限公司 | Active equalization device for battery pack |
-
2017
- 2017-07-07 CN CN201710548860.2A patent/CN107240946A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103430420A (en) * | 2011-03-08 | 2013-12-04 | Ｅｖｔｄ株式会社 | Balance correction device and electricity storage system |
| CN102231550A (en) * | 2011-07-05 | 2011-11-02 | 张化锴 | Active charge/discharge balancing system of power battery and implementation method thereof |
| CN202503346U (en) * | 2012-03-30 | 2012-10-24 | 青岛艾迪森科技有限公司 | Intelligent automatic charging and repairing device for storage battery |
| CN104935057A (en) * | 2015-07-14 | 2015-09-23 | 国家电网公司 | Equalization method and equalization system for lithium ion battery pack |
| CN206908352U (en) * | 2017-07-07 | 2018-01-19 | 东莞中汽宏远汽车有限公司 | Active equalization device for battery pack |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109950647A (en) * | 2019-03-27 | 2019-06-28 | 联想(北京)有限公司 | A kind of battery system and processing method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8144024B2 (en) | Apparatus and method for sensing leakage current of battery | |
| KR101913460B1 (en) | System and method for detecting battery cell swelling | |
| KR102204983B1 (en) | Apparatus for managing battery, battery pack including the same and vehicle including the same | |
| JP5929526B2 (en) | Power supply device and power supply switching method | |
| US9520621B2 (en) | Method for detecting a triggering of a security device | |
| US9153990B2 (en) | Steady state detection of an exceptional charge event in a series connected battery element | |
| CN104709091A (en) | Power-on method and power-off method of full electric vehicle | |
| CN106785155B (en) | A kind of cell safety detection device, battery modules and electric vehicle | |
| WO2015142145A1 (en) | Pre-charging and voltage supply system for a dc-ac inverter | |
| CN103414224A (en) | High-capacity high-voltage integrated battery pack system and control method thereof | |
| US9529048B2 (en) | Transient detection of an exceptional charge event in a series connected battery element | |
| CN107195994A (en) | Active equalization device for battery pack | |
| US10355498B2 (en) | Response to detection of an overdischarge event in a series connected battery element | |
| CN104488133A (en) | Apparatus and method for detecting battery swelling | |
| WO2013057821A1 (en) | Electricity storage device control system | |
| CN107258028A (en) | Battery cell, battery and motor vehicle for automotive battery | |
| CN206908352U (en) | Active equalization device for battery pack | |
| CN107240946A (en) | Active equalization device for battery pack | |
| CN106655307A (en) | Battery pack equalization circuit | |
| CN112083342A (en) | Method and apparatus for monitoring battery | |
| CN107294164A (en) | Active equalization device for battery pack | |
| US9343911B2 (en) | Response to detection of an overcharge event in a series connected battery element | |
| CN107276168A (en) | Active equalization method and computer-readable medium for battery pack | |
| CN103825254A (en) | Charge and discharge protection device and method for large-scale power lithium battery | |
| CN207134824U (en) | Active equalization device for battery pack |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171010 |
|
| RJ01 | Rejection of invention patent application after publication |