CN208820017U - Battery pack management system - Google Patents
Battery pack management system Download PDFInfo
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- CN208820017U CN208820017U CN201821414108.5U CN201821414108U CN208820017U CN 208820017 U CN208820017 U CN 208820017U CN 201821414108 U CN201821414108 U CN 201821414108U CN 208820017 U CN208820017 U CN 208820017U
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- battery
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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
- 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
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Abstract
The utility model discloses battery pack management system, comprising: power battery pack, energy-storage battery group, main controller；The power battery pack includes: multiple concatenated battery modules, and each battery modules include multiple concatenated power battery pack single batteries；The energy-storage battery group includes: the energy-storage battery group single battery of multiple parallel connections；Energy-storage battery group monomer battery voltage in the energy-storage battery group is adjustable, and each power battery pack single battery forms independent parallel circuit in the energy-storage battery group and the power battery pack, it also include a controllable switch being electrically connected respectively with the power battery pack single battery and the energy-storage battery group in each parallel circuit, the control terminal of the controllable switch and the main controller communicate to connect.The control monomer of the utility model is that power battery pack adjusts electricity by energy-storage battery group, to promote the overall performance of battery pack, service life and its safety.
Description
Technical field
The utility model relates to battery correlative technology field, especially a kind of battery pack management system.
Background technique
In recent years, as the development of new-energy automobile is gradually accelerated, pure electric automobile is as one of mainstream aspect table
It is existing especially prominent.As the core technology of electric car, the requirement to its battery management system is also increasingly being improved.But due to list
The design of the difference and system of body battery production technology influences, and newly the consistency of energy hardly results in guarantee in product practical application,
The safety of vehicle mounted dynamic battery group and the unbalanced problem of serial connection charge are the big resistances for limiting its development.In addition battery works
Also the overall performance too high or too low for temperature that will affect battery, to directly affect the course continuation mileage and driving performance of automobile.
There are two types of existing Balance route strategy is general, first is that preventing battery cell in such a way that parallel resistance consumes electricity
Overcharge, another be it is in parallel with each battery cell using several DC/DC converters etc., actively carry out electric quantity balancing, can be with
Prevent battery cell super-charge super-discharge.The utility model proposes Balance route strategy belong to active equalization, but without the use of several
A high-cost DC/DC converter, but use a low capacity energy-storage battery group and several controllable switches (for example MOSFET is opened
Close) transfer of the high electricity of Lai Jinhang single battery can alternatively even connect with simple inductor with controllable switch, into one
Step provides overcurrent protection function.
Existing temperature control system is usually that water-cooling system is in the majority.Generally, water cooling generallys use one piece of big heat exchange
Plate and heat exchanger are placed in below battery modules, are padded above heat exchanger plates there is one layer of heat exchange between mould group, heat exchanger plates lower section and battery
There is one layer of heat insulating mattress between packet supporing shell frame, by the water temperature in control heat exchanger plates, realizes the heat exchange with battery modules, from
And the bulk temperature of battery pack is controlled, but the non-uniform temperature that such mode controls, because heat exchanger plates contact directly below with mould group
The upper part heat exchange of heat exchange, mould group is insufficient, and the position temperature difference is up to 8-10 degree up and down for mould group, in addition for big battery pack,
The heat exchanger and heat exchanger plates needed is bigger, this is also resulted in, and heat exchanger plates self-temperature is also uneven, passes in and out the region temperature of saliva
It spends also larger.To promote temperature control effect, the utility model provides a kind of distributed heat exchanger and separate assembling heat exchanger plates, that is, uses
Several small heat exchangers substitute original big heat exchanger, and original big heat exchanger plates are divided into several smaller change by the arrangement of mould group
Hot plate, this smaller heat exchanger plates have the heat exchange function of vertical direction, the side of mould group can be cooled down, so that entire battery pack be made to exist
Temperature is more uniform on horizontal space and vertical space.
The method of commonly used estimation battery pack SOC has open circuit voltage method, current integration method, internal resistance method, nerve at present
Network technique etc., each method have the advantage and disadvantage and application conditions of itself.
Utility model content
Based on this, it is necessary to provide a kind of battery pack management system.
The utility model provides a kind of battery pack management system, comprising: power battery pack, energy-storage battery group, main controller；
The power battery pack includes: multiple concatenated battery modules, and each battery modules include multiple concatenated
Power battery pack single battery；
The energy-storage battery group includes: the energy-storage battery group single battery of multiple parallel connections；
Energy-storage battery group monomer battery voltage in the energy-storage battery group is adjustable, and the energy-storage battery group is moved with described
Each power battery pack single battery forms independent parallel circuit in power battery pack, also includes one point in each parallel circuit
The controllable switch not being electrically connected with the power battery pack single battery and the energy-storage battery group, the control of the controllable switch
End is communicated to connect with the main controller.
Further, the energy-storage battery group further includes adjustable transformer, the primary side of the adjustable transformer with it is described
The electrical connection of energy-storage battery group single battery, the secondary side of the adjustable transformer are electrically connected with the controllable switch.
Further, each power battery pack single battery of the power battery pack is also in parallel with inductor.
It further, further include multiple heat exchange bottom plates, water pump, heat exchanger, condenser and heater；
It is provided with bottom plate cooling passage on each heat exchange bottom plate, the bottom plate cooling passage and the water pump,
And the heat exchanger connection, the heat exchanger are also connected to the heater and the condenser respectively；
Multiple battery modules are set on each heat exchange bottom plate, and each battery modules two sides are respectively set two
Exchange heat side plate, and the heat exchange side plate is arranged on the heat exchange bottom plate, is provided with side plate cooling passage on the heat exchange side plate,
The side plate cooling passage of each heat exchange side plate and the bottom plate coolant liquid of the set heat exchange bottom plate are logical
Road connection；
The water pump, the condenser and the heater are communicated to connect with the main controller respectively.
Further, be provided with heat transfer pad between the heat exchange bottom plate and the battery modules, the heat exchange side plate with
Heat transfer pad is provided between the battery modules.
Further, water inlet and the water outlet of the bottom plate cooling passage connection are provided on the heat exchange bottom plate
Mouthful.
The control monomer of the utility model is that power battery pack adjusts electricity by energy-storage battery group, to promote battery pack
Overall performance, service life and its safety.
Detailed description of the invention
Fig. 1 is a kind of systematic schematic diagram of battery pack management system of the utility model；
Fig. 2 is the energy storage battery group operation schematic diagram of the utility model；
Fig. 3 is the battery pack heat management system schematic diagram of the utility model；
Fig. 4 is the split type heat exchange structural diagram of base plate of the utility model；
Fig. 5 is the combined type heat exchange side plate of the utility model；
Fig. 6 is the electric quantity balancing control strategy of the best embodiment of the utility model；
Fig. 7 is that the state-of-charge (state of charge, SOC) of the best embodiment of the utility model estimates strategy.
Specific embodiment
The utility model is described in more detail in the following with reference to the drawings and specific embodiments.
It is as shown in Figure 1 a kind of systematic schematic diagram of battery pack management system of the utility model, comprising: power battery pack 1,
Energy-storage battery group 2, main controller 3；
The power battery pack 1 includes: multiple concatenated battery modules 11, and each battery modules 11 include multiple strings
The power battery pack single battery 12 of connection；
The energy-storage battery group 2 includes: the energy-storage battery group single battery 21 of multiple parallel connections；
Energy-storage battery group monomer battery voltage in the energy-storage battery group 2 is adjustable, and the energy-storage battery group 2 with it is described
Each power battery pack single battery 12 forms independent parallel circuit in power battery pack 1, also includes in each parallel circuit
One controllable switch 22 being electrically connected respectively with the power battery pack single battery and the energy-storage battery group, it is described controllably to open
The control terminal and the main controller 3 for closing 22 communicate to connect.
Specifically, power battery pack provides driving power, is connected by multiple battery modules, and each mould group is gone here and there electric by m
Pond is monomer series-connected to be formed.Energy-storage battery group is formed in parallel by n battery cell, and charge capacity recommendation accounts for power battery pool-size
5%-10%.Energy-storage battery group can be electrically operated to the progress charge and discharge of power battery monomer by policy control, to prevent stopping power electricity
The super-charge super-discharge of pond monomer.
Fig. 2 is energy-storage battery group operation schematic diagram, wherein connect by route 25 with power battery pack single battery anode,
It is connect by route 26 with power battery pack single battery cathode.It is every in the adjustable energy-storage battery group 2 of voltage and power battery pack 1
A power battery pack single battery realizes parallel connection, includes also a controllable switch 22 in each parallel circuit, passes through controllable switch
22 and voltage regulation realize electricity shifted between energy-storage battery group 2 and power battery pack single battery 12, wherein controllably opening
It closes 22 often to be disconnected with state, be connected under certain condition.
The control monomer of the utility model is that power battery pack adjusts electricity by energy-storage battery group, to promote battery pack
Overall performance, service life and its safety.
As shown in Fig. 2, the energy-storage battery group further includes adjustable transformer 23, the tune in one of the embodiments,
The primary side of pressure transformer 23 is electrically connected with the energy-storage battery group single battery 21, the secondary side of the adjustable transformer 23 with
The controllable switch 22 is electrically connected.
The present embodiment adjusts the voltage of energy-storage battery group using adjustable transformer 23.
As shown in Fig. 2, each power battery pack single battery 12 of the power battery pack in one of the embodiments,
It is also in parallel with inductor 24.
Each power battery pack single battery 12 of the present embodiment inductor 24 also in parallel, is normal parallel connection, prevents
Only monomer overcurrent.
As shown in Fig. 3~Fig. 5, further include in one of the embodiments, multiple heat exchange bottom plates 4, water pump 5, heat exchanger 6,
Condenser 7 and heater 8；
Bottom plate cooling passage, the bottom plate cooling passage and the water pump are provided on each heat exchange bottom plate 4
5 and the heat exchanger 6 be connected to, the heat exchanger 6 is also connected to the heater 8 and the condenser 7 respectively；
Multiple battery modules 11 are set on each heat exchange bottom plate 4, and 11 two sides of each battery modules are set respectively
Two heat exchange side plates 9 are set, it is cold that the setting of heat exchange side plate 9 is provided with side plate on the heat exchange bottom plate 4, on the heat exchange side plate
But liquid channel, the side plate cooling passage of each heat exchange side plate and the bottom plate of the set heat exchange bottom plate
Cooling passage connection；
The water pump 5, the condenser 7 and the heater 8 are communicated to connect with the main controller respectively.
Specifically, coolant liquid is pumped out by water pump 5, is flowed through heat exchanger 8, heat exchange bottom plate 4 and heat exchange side plate 9 and is flowed back to water pump 5.
It when flowing through heat exchanger 4, can be cooled down by condenser 7, or be heated by heater 8 to reach temperature control purpose.System
Share a water pump 5 and a heater 8, heat exchanger and heat exchange bottom plate, heat exchange side plate be it is multiple, each heat exchange bottom plate is set
Set a heat exchanger and condenser and multiple heat exchange side plates.Several are distributed according to the mould group layout design of battery pack system to change
Hot bottom plate (general 2 or 3 or so).The bottom plate signal that exchanges heat such as Fig. 4, the heat exchanger plates being isolated by several pieces are constituted, whole by original one
Block heat exchanger plates are divided into several pieces of split type heat exchange bottom plates 4, and the coolant liquid in every piece of heat exchange bottom plate 4 is flowed by water inlet 41, is discharged
Mouth 42 flows out.On this basis, as shown in figure 5, increasing knockdown heat exchange side plate 9 for each battery modules 11.This heat exchange side
Plate can provide protection to battery modules 11, also can be carried out heat exchange cooling.Heat exchange side plate and heat exchange bottom plate can pass through card slot+rubber
Glue sealing ring form assembles, and the temperature change of the combination is little, and rubber seal is general to expire without being specifically designed
Foot requires, and can also directly be made of one formula.Wherein, Fig. 4 is schematic diagram, only depicts 2 small heat exchanger plates, in practical application,
According to the size and temperature control capacity requirement on monolith heat exchange floor, monolith heat exchange bottom plate can be divided into several pieces of separated small heat exchange floors.
It is provided with heat transfer pad between the heat exchange bottom plate 4 and the battery modules 11 in one of the embodiments, it is described
Heat transfer pad is provided between heat exchange side plate 9 and the battery modules 11.
The present embodiment designs one layer of heat transfer pad between all heat exchanger plates and battery modules, reaches buffer protection and well changes
The function of heat.One layer of heat insulating mattress can also be designed outside heat exchanger plates, reach buffer protection and stability contorting battery pack system space
The effect of interior temperature.This temperature control system can provide more uniform spatial temperature distribution in horizontal and upper and lower vertical direction.
The water inlet of the bottom plate cooling passage connection is provided on the heat exchange bottom plate in one of the embodiments,
41 and water outlet 42.
As shown in Figure 1, as the best embodiment of the utility model, battery pack management system mainly include power battery pack 1,
Energy-storage battery group 2, main controller 3, temperature control module 31, SOC estimation block 32, balance module 33, data acquisition module 34, communication are aobvious
Show unit 35 etc. and corresponding controllable route.Wherein energy storage electricity group 2 includes a transformer 23, it can be achieved that energy-storage battery group
The charging of single battery 21.Balance module 33 includes controllable switch 22, simple inductor 24 etc..Temperature control module 31 includes heat exchanger
6, condenser 7, split type heat exchange bottom plate 4 and combined type heat exchange side plate 9 etc..Battery pack management system schematic diagram is as shown in Figure 1.
Balance control system is made of energy-storage battery group, transformer, controllable switch, simple inductor and power battery
System.Energy-storage battery group can be electrically operated to the progress charge and discharge of power battery monomer by policy control, to prevent stopping power battery cell
Super-charge super-discharge.Inductor can prevent battery cell overcurrent to a certain extent, play overcurrent protection.Transformer realizes energy storage electricity
The variation of pond group both end voltage, for energy-storage battery group it is in parallel with power battery monomer and carry out charge and discharge realization condition is provided.Fig. 2
For energy storage battery group operation schematic diagram.Single battery in energy-storage battery group is in parallel, can reduce multiple battery strings connection bring electricity
Amount is uneven to be influenced.Energy-storage battery group is made into integrated universal module, is conveniently replaceable.In addition, integration module is placed in battery pack
System peripherals, it is natural air cooled using vehicle close to the position of vehicle air inlet grid.With reference to experience, the electricity of energy-storage battery group holds
Amount is about 5%-10% power battery pack.
Electric quantity equalizing system provides the dedicated of super-charge super-discharge and overcurrent by setting energy-storage battery group system, to power battery
Protection, can high degree raising power battery performance and service life.And energy-storage battery group itself is not necessarily to additionally be protected, it can basis
K monitoring to energy-storage battery group state, regularly replaces energy-storage battery group, in vehicle life cycle to ensure that power battery is in
In good guard mode.The control strategy of electric quantity equalizing system is as shown in Figure 6, comprising:
Step S601 first collects voltage, current information, judges the working condition of power battery pack；
When power battery pack is in charged state, executes step S602 and held when power battery pack is in discharge condition
Row step 603；
Step S602 calculates the maximum electricity q1 (t) of each single battery and maximum electricity in current time t power battery pack
Poor Δ q1 (t), system allow single battery maximum electricity be Qmax, maximum electricity difference be Δ Qmax, when Rule of judgment q1 >
When Qmax or Δ q1 > Δ Qmax meet, opens corresponding and the single battery controllable switch and become for example, by control pressure regulation
Depressor turns down energy-storage battery group voltage, so that transformer output voltage is lower than maximum electricity monomer voltage, makes the excessively high of single battery
Electricity is shifted toward energy-storage battery group.The interval of delta t time (such as 1 second) updates and calculates maximum electricity q1 (t+ Δ t) and maximum at this time
Electricity difference Δ q1 (t+ Δ t), and return to judgement.If Rule of judgment is unsatisfactory for, disconnects controllable switch or keep switch to disconnect
State, after the interval of delta t time, the maximum electricity q1 of update (t+ Δ t) and maximum electricity difference Δ q1 (t+ Δ t) returns to judgement afterwards, this
Process circulation is until charging complete terminates；
Step S603, calculates the minimum amount of power q2 (t) of each single battery in current time t power battery pack, and system allows
Single battery minimum amount of power be Qmin, when Rule of judgment q2 < Qmin meets, open and corresponding opened with the controllable of the single battery
Close and for example, by control adjustable transformer, be turned up energy-storage battery group voltage, make transformer output voltage be higher than minimum amount of power list
Bulk voltage shifts the electricity of energy-storage battery group toward single battery.The interval of delta t time (such as 1 second) updates and calculates minimum at this time
Electricity q2 (t+ Δ t), and return to judgement.If Rule of judgment is unsatisfactory for, disconnecting controllable switch or keeping switch is off-state,
After the interval of delta t time, minimum amount of power q2 (t+ Δ t), this process circulation, to keep battery last work until electric discharge knot are updated
Beam.
Battery pack heat management system includes heater, heat exchanger, water pump, heat exchanger plates.Wherein heat exchanger includes condenser, is changed
Hot plate includes split type heat exchange bottom plate and combined type heat exchange side plate.Original heat management system is usually a big heat exchanger plates, changes
Original one big heat exchanger plates are divided into several pieces by the cooling system of hot device and water pump composition, the heat management system of the utility model
It exchanges heat bottom plate (split type heat exchange bottom plate), and adds corresponding combination heat exchange side plate, adjacent two blocks of heat exchange side plates are a pair, arrangement
In the two sides of each battery modules 11.In addition every piece of heat exchange bottom plate and several side panel systems match the heat exchanger of a small flow
(distributed heat exchanger replaces original big flow heat exchanger).Water pump and heater share one, for all heat exchanger plates and change
Hot device operation.Fig. 3 is battery pack heat management system schematic diagram provided by the utility model, and Fig. 4 is split type heat exchange bottom plate, Fig. 5
For combined type heat exchange side plate.Compared to original heat management system, Tthe utility model system (split type heat exchange bottom plate in the horizontal direction
The horizontal direction temperature difference can be made smaller) and upper (combined type heat exchange side plate the keeps the vertical direction temperature difference smaller) temperature of aspect is more equal vertically
It is even.
Battery pack SOC calculation process as shown in fig. 7, comprises:
Step S701 first judges whether power battery pack is cold start, and power battery pack time of repose is t, target
Time of repose is T (recommendation 30 minutes or more) when Rule of judgment time of repose t > T meets, and is calculated with open circuit voltage method initial
The SOC at momentj(t=0) value, otherwise with task when the final SOC that recordsjIt is worth the initial value SOC as thisj(t=0).
When the use condition of existing open circuit voltage method: the state of battery is when starting electric discharge.To stand in the utility model
Time is Rule of judgment.Because the SOC estimation of open circuit voltage method is obtained under battery off working state, applicable situation is electricity
Motor-car does not use at work.And current electric vehicle usually all has energy recovery function, often there is charging and discharging state and cuts
Change, i.e., battery start electric discharge is not meant to that electric vehicle just starts and starts to work, so the present embodiment using time of repose come
Judgement is more closed practical.
Step S702 judges that current state for charge or discharge, if it is charging, thens follow the steps S703, if it is putting
Electricity thens follow the steps S704；
Step S703, enabling system charge target electricity is SOCCharge target i, i indicate power battery pack by the end of it is current accumulative
It is i times fully charged.When power battery pack is charged state, Rule of judgment SOCj<SOCCharge target iWhen meeting, charging work is used in combination
Current integration method calculates real-time SOCj+1(t+ Δ t), enables SOCj=SOCj+1It then proceedes to return to judgement.If Rule of judgment is discontented
Foot, then it represents that electricity has reached target charge volume, records currently add up fully charged number i+1 at this time, then according to aging song
Target charge volume line amendment is charged next time when: SOCCharge target i=SOCCharge target i+1And terminate to charge.
Step S704, enabling system discharge target electricity is SOCDischarge target k, k indicate power battery pack by the end of it is current accumulative
Electric discharge k times completely.When power battery pack is discharge condition, Rule of judgment SOCj>SOCDischarge target kWhen meeting, electric discharge work peace
When integration method calculate real-time SOCj+1(t+ Δ t), enables SOCj=SOCj+1It then proceedes to return to judgement.If Rule of judgment is unsatisfactory for,
It then indicates remaining capacity deficiency, records currently add up complete discharge time k+1 at this time, then next time according to aging curve amendment
Target charge volume when electric discharge: SOCDischarge target i=SOCDischarge target k+1And terminate to discharge, prompting needs to charge.
In practice, battery is with the increase of complete charge and discharge number, and the internal resistance of cell can become larger, while electricity reduces, and presents
Ageing state out.According to the aging statistical data that single battery is surveyed, target value when each charge and discharge of battery pack can be corrected,
Reach more accurate charge and discharge control.
It is with existing algorithm difference, first is that open circuit voltage method is different with the use condition of current integration method, second is that considering
Target electricity is corrected to the influence of cell degradation.The SOC calculation method of the utility model can more be bonded practical client and use feelings
Condition further increases estimation precision.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it should not be understood as limiting the scope of the patent of the utility model.It should be pointed out that for the common of this field
For technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these all belong to
In the protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (6)
1. a kind of battery pack management system characterized by comprising power battery pack, energy-storage battery group, main controller；
The power battery pack includes: multiple concatenated battery modules, and each battery modules include multiple concatenated power
Batteries monomer battery；
The energy-storage battery group includes: the energy-storage battery group single battery of multiple parallel connections；
Energy-storage battery group monomer battery voltage in the energy-storage battery group is adjustable, and the energy-storage battery group and the power electric
The each power battery pack single battery of Chi Zuzhong forms independent parallel circuit, in each parallel circuit also comprising one respectively with
The power battery pack single battery and the energy-storage battery group electrical connection controllable switch, the control terminal of the controllable switch with
The main controller communication connection.
2. battery pack management system according to claim 1, which is characterized in that the energy-storage battery group further includes that pressure regulation becomes
Depressor, the primary side of the adjustable transformer are electrically connected with the energy-storage battery group single battery, and the two of the adjustable transformer
Secondary side is electrically connected with the controllable switch.
3. battery pack management system according to claim 1, which is characterized in that each power electric of the power battery pack
Pond group single battery is also in parallel with inductor.
4. battery pack management system according to claim 1, which is characterized in that further include multiple heat exchange bottom plates, water pump, change
Hot device, condenser and heater；
Be provided with bottom plate cooling passage on each heat exchange bottom plate, the bottom plate cooling passage and the water pump and
The heat exchanger connection, the heat exchanger are also connected to the heater and the condenser respectively；
Multiple battery modules are set on each heat exchange bottom plate, and two heat exchange are respectively set in each battery modules two sides
Side plate, the heat exchange side plate are arranged on the heat exchange bottom plate, are provided with side plate cooling passage on the heat exchange side plate, each
The side plate cooling passage of the heat exchange side plate and the bottom plate cooling passage of the set heat exchange bottom plate connect
It is logical；
The water pump, the condenser and the heater are communicated to connect with the main controller respectively.
5. battery pack management system according to claim 4, which is characterized in that the heat exchange bottom plate and the battery modules
Between be provided with heat transfer pad, be provided with heat transfer pad between the heat exchange side plate and the battery modules.
6. battery pack management system according to claim 4, which is characterized in that be provided with the bottom on the heat exchange bottom plate
The inlet and outlet of plate cooling passage connection.
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| CN201821414108.5U CN208820017U (en) | 2018-08-30 | 2018-08-30 | Battery pack management system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116653703A (en) * | 2023-07-24 | 2023-08-29 | 北京集度科技有限公司 | Battery equalization method, device, battery pack, vehicle and storage medium |
| JP7438282B2 (en) | 2021-07-30 | 2024-02-26 | ファーウェイ デジタル パワー テクノロジーズ カンパニー リミテッド | Battery module and charging system |
-
2018
- 2018-08-30 CN CN201821414108.5U patent/CN208820017U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7438282B2 (en) | 2021-07-30 | 2024-02-26 | ファーウェイ デジタル パワー テクノロジーズ カンパニー リミテッド | Battery module and charging system |
| CN116653703A (en) * | 2023-07-24 | 2023-08-29 | 北京集度科技有限公司 | Battery equalization method, device, battery pack, vehicle and storage medium |
| CN116653703B (en) * | 2023-07-24 | 2023-10-20 | 北京集度科技有限公司 | Battery equalization method, device, battery pack, vehicle and storage medium |
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