CN108845265A - Battery modules and voltage detection method, electrical equipment based on it - Google Patents
Battery modules and voltage detection method, electrical equipment based on it Download PDFInfo
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- CN108845265A CN108845265A CN201810653846.3A CN201810653846A CN108845265A CN 108845265 A CN108845265 A CN 108845265A CN 201810653846 A CN201810653846 A CN 201810653846A CN 108845265 A CN108845265 A CN 108845265A
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Abstract
The present invention relates to powder technology field more particularly to a kind of battery modules and voltage detection method, electrical equipment based on it.The battery modules include：Battery pack comprising several batteries, the external-connected port for acquiring the voltage acquisition unit of each cell voltage in battery pack, the battery pack；It is connected between each battery in the voltage acquisition unit and battery pack by voltage acquisition conducting wire, the charge and discharge that the battery pack is connected by the external-connected port with the voltage acquisition conducting wire at corresponding battery pack both ends to realize the battery pack.Using scheme provided by the invention, the number of conductors of battery modules can be reduced and do not influence the normal work of battery modules.
Description
Technical field
The present invention relates to powder technology fields, specifically, the present invention relates to a kind of battery modules and based on its voltage
Detection method, electrical equipment.
Background technique
With the continuous development of intelligent equipment, the requirement to the battery in equipment is also higher and higher, low capacity it is single
Battery is no longer satisfied the needs of equipment, multiple batteries are connected to be formed large capacity battery have become large capacity development
Trend.
Multiple groups battery connects to form powerful battery pack, to monitor the voltage of every group of battery, needs in every group of battery
One end be all connected with a voltage detecting line, and entire battery pack needs input-output line, and the battery in battery pack is more, then needs
The quantity for the voltage detecting line wanted is more, and in the circuit of some pairs of number of conductors and weight sensitive, these conducting wires can be to entirety
Battery pack generates adverse effect, or is not available.Fig. 1 is the connection of the battery pack of the existing widely applied multiple batteries of series connection
Schematic diagram.
Now need a kind of scheme that can reduce the number of conductors of battery pack and do not influence battery pack normal work.
Summary of the invention
The purpose of the present invention aims to solve at least one of above-mentioned technological deficiency, in particular how reduces conducting wire in battery modules
Quantity is more, shared bulky problem.
The embodiment of the present invention provides firstly a kind of battery modules, including：Battery pack comprising several batteries, for adopting
The external-connected port of the voltage acquisition unit of each cell voltage in set battery group, the battery pack；The voltage acquisition unit and electricity
It is connected between each battery in the group of pond by voltage acquisition conducting wire, the battery pack passes through the external-connected port and corresponding battery
The voltage acquisition conducting wire at group both ends connects the charge and discharge to realize the battery pack.
Preferably, it is switched on the voltage acquisition conducting wire of the battery at the battery pack both ends at least provided with one.
Preferably, the interface quantity of the voltage acquisition unit is more than the number of batteries in the battery pack.
Preferably, each battery series connection in the battery pack.
Further, the voltage detection method based on battery modules described in any of the above-described technical solution, including：
Charge/discharge is carried out to the battery pack, when detection is in charge discharge state, the of each battery in battery pack
One voltage and positioned at battery pack both ends battery voltage acquisition conducting wire charge/discharge current；
Each electricity when based on the first voltage, the charge/discharge current and preset battery pack progress charge/discharge
The second voltage in pond, the tertiary voltage for stopping each battery when charge/discharge, determine the practical electricity of each battery in the battery pack
Pressure.
Preferably, the voltage detection method of the battery modules further includes：
Each battery when the second voltage and stopping charge/discharge of each battery when based on battery pack progress charge/discharge
Tertiary voltage determines the deviation voltage of each battery in battery pack.
Specifically, described to be filled based on the first voltage, the charge/discharge current and preset battery pack
The second voltage of each battery when electricity/electric discharge, the tertiary voltage for stopping each battery when charge/discharge determine each in the battery pack
The step of virtual voltage of battery, including：
In conjunction with the second voltage, tertiary voltage and the charge/discharge current, determine that the voltage at battery pack both ends is adopted
Collect the resistance of conducting wire；
In conjunction with the first voltage of each battery, the charge/discharge current and the battery pack both ends in the battery pack
The resistance of voltage acquisition conducting wire determine the virtual voltage of each battery in battery pack.
Specifically, further include：When the quantity of the battery in battery pack is more than 3, the non-both ends in battery pack
The virtual voltage of battery is the first voltage.
Further, the embodiment of the invention also provides a kind of computer readable storage medium, it is stored thereon with computer
The step of program, which realizes voltage detection method described in any of the above-described technical solution when executing.
Further, the embodiment of the invention also provides a kind of electrical equipments, are mounted with any of the above-described technical side thereon
Battery modules described in case.
Battery modules provided in an embodiment of the present invention pass through the external-connected port of battery pack and the voltage acquisition at battery pack both ends
The charge and discharge to the battery pack are realized in conducting wire connection, and the voltage acquisition conducting wire positioned at battery pack both ends can be used in detecting battery
Voltage can also act as charge/discharge of the input and output conducting wire realization to battery pack of battery pack, realize that conducting wire shares, reduce
The quantity of conducting wire in entire battery modules, and then volume and weight shared by the conducting wire are reduced, be conducive to battery modules progress
Miniaturization, the improvement in lightweight direction.
The embodiment of the present invention proposes a kind of voltage detection method based on battery modules based on above-mentioned battery modules, utilizes
The variation of cell voltage determines electricity to voltage and charge/discharge of the battery pack in preset charge discharge state afterwards for a period of time
The deviation voltage in pond is laid the groundwork for amendment cell voltage, and then is conducive to obtain the virtual voltage of each battery in battery pack.
The additional aspect of the present invention and advantage will be set forth in part in the description, these will become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect and advantage of the invention will become from the following description of the accompanying drawings of embodiments
Obviously and it is readily appreciated that, wherein：
Fig. 1 is the wire connection diagram of each cell voltage in existing detection battery pack；
Fig. 2 is the structural schematic diagram for the battery modules that an embodiment of the present invention provides；
Fig. 3 provides the structural schematic diagram of the battery modules for what an embodiment of the present invention provided；
Fig. 4 is the structural schematic diagram for the battery modules that an embodiment of the present invention provides, and emphasis shows the voltage of battery one
It acquires conducting wire and is equipped with switch；
Fig. 5 is the structural schematic diagram for the battery modules that an embodiment of the present invention provides, and emphasis shows the voltage of battery four
It acquires conducting wire and is equipped with switch；
Fig. 6 is the flow diagram for the voltage detection method that an embodiment of the present invention provides；
Fig. 7 be the battery pack that provides of an embodiment of the present invention not by charge and discharge electrical interference when normal voltage histogram；
Fig. 8 is discharge voltage histogram of the battery pack that provides of an embodiment of the present invention in discharge condition；
Fig. 9 is charging voltage histogram of the battery pack provided by one embodiment of the present invention in charged state.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not construed as limiting the claims.
Those skilled in the art of the present technique are appreciated that unless expressly stated, singular " one " used herein, " one
It is a ", " described " and "the" may also comprise plural form.It is to be further understood that being arranged used in specification of the invention
Diction " comprising " refer to that there are the feature, integer, step, operation, element and/or component, but it is not excluded that in the presence of or addition
Other one or more features, integer, step, operation, element, component and/or their group.It should be understood that when we claim member
Part is " connected " or when " coupled " to another element, it can be directly connected or coupled to other elements, or there may also be
Intermediary element.In addition, " connection " used herein or " coupling " may include being wirelessly connected or wirelessly coupling.It is used herein to arrange
Diction "and/or" includes one or more associated wholes for listing item or any cell and all combinations.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (including technology art
Language and scientific term), there is meaning identical with the general understanding of those of ordinary skill in fields of the present invention.Should also
Understand, those terms such as defined in the general dictionary, it should be understood that have in the context of the prior art
The consistent meaning of meaning, and unless idealization or meaning too formal otherwise will not be used by specific definitions as here
To explain.
The present invention provides a kind of battery modules, the battery modules have voltage detecting function, in one embodiment,
The structural schematic diagram of battery modules is as shown in Fig. 2, include：Battery pack 10 comprising several batteries, for acquiring in battery pack
The voltage acquisition unit 20 of each cell voltage, the external-connected port 30 of the battery pack 10；The voltage acquisition unit 20 and battery
It is connected between each battery in group 10 by voltage acquisition conducting wire, the battery pack passes through the external-connected port 30 and corresponding electricity
The voltage acquisition conducting wire at pond group both ends connects the charge and discharge to realize the battery pack.
As shown in Fig. 2, each battery one end is equipped with voltage acquisition wire connected battery and voltage acquisition unit in battery pack,
The voltage acquisition unit is connect by interface with voltage acquisition conducting wire, and the voltage acquisition for being located at the battery at battery pack both ends is led
Line one end is connected with battery, and the other end is connected with the external-connected port of the interface of voltage acquisition unit and the battery pack respectively, i.e.,
The input and output conducting wire of the battery pack and the voltage acquisition conducting wire at battery pack both ends share.As shown in Fig. 2, voltage acquisition unit
Interface quantity more than the number of batteries in the battery pack.
In one embodiment, the quantity of the voltage acquisition unit is consistent with number of batteries, i.e., each battery is corresponding
Connect an independent voltage acquisition unit, the voltage at one battery both ends of the corresponding measurement of each voltage acquisition unit, this kind of situation
It for the extreme case of a upper embodiment, i.e., only include a battery in battery pack, the voltage of voltage acquisition unit acquisition is the electricity
The voltage in pond.The scheme that this kind of embodiment provides can precisely be quickly detected from the voltage at each battery both ends in battery pack.
Preferably, the internal resistance of each battery reaches unanimity in battery pack, surveys in order to improve the voltage of each battery in battery pack
Accuracy of measurement.
Battery modules provided by the invention, in one embodiment, the structural schematic diagram of battery modules is as shown in figure 3, institute
It states comprising 4 batteries being together in series in battery pack, the battery is followed successively by battery one, battery two, battery three, electricity from left to right
Chi Si, the battery positioned at battery pack both ends are battery one and battery four in figure, and the voltage of battery one to battery four is adopted
Collection conducting wire is respectively 11,22,33,44,55 in figure, and the voltage acquisition conducting wire for being connected to battery both ends detects battery both ends respectively
Potential, the difference of the potential at battery both ends is the voltage of the battery.Assuming that the conducting wire 11 detects the high potential end of battery one, lead
Line 55 detects the low potential end of battery four, and the voltage acquisition conducting wire at the battery pack both ends is conducting wire 11 and conducting wire 55, passes through institute
The voltage acquisition conducting wire for stating battery pack both ends is able to detect the voltage of entire battery pack, i.e., the potential that conducting wire 11 measures subtracts conducting wire
55 potentials measured are the voltage of battery pack.In the present embodiment, one end of the conducting wire 11 and conducting wire 55 respectively with battery one,
Battery four connects, and the other end is divided into two branches, and a branch is connected with voltage acquisition unit, another branch and battery pack
External-connected port is connected, and the external-connected port is connected with external power supply or load, realizes the charge and discharge to battery pack.It on the one hand can
The voltage of battery one and battery four is detected by conducting wire 11 and conducting wire 55, battery pack can also be carried out by conducting wire 11 and conducting wire 55
Charge/discharge realizes the charge-exchange of inside battery and outside batteries, realizes that voltage acquisition conducting wire and battery pack input and output are led
Line shares.
Voltage acquisition conducting wire positioned at battery pack both ends is able to detect the voltage of the battery at the battery pack both ends, also can
The charge/discharge to battery pack is realized by this two voltage acquisition conducting wires, is realized to battery pack charge/discharge and to battery pack
In each cell voltage detection, reduce the quantity of conducting wire in entire battery modules, and then reduce volume shared by the conducting wire
And weight, be conducive to the battery modules minimized, the improvement in lightweight direction.
In a kind of embodiment, the battery is preferably lithium battery, and the battery pack is lithium battery group, is had using lithium battery
Following advantage：Energy density is high, pollution-free, charging rate is fast.
Preferably, each battery in the battery pack uses concatenated relationship, and battery is together in series can be by each battery
Capacity it is tired be summed to form the bigger battery of capacity, farthest increase the capacity of battery pack.The battery in battery pack
Quantity it is unlimited, can such as connect 4 batteries, as shown in figure 3, can also connect 8,10 batteries form required battery and hold
Amount.
In one embodiment, one end of the voltage acquisition conducting wire positioned at battery pack both ends is connected with battery, another
End connects a selection switch, and the other end of the selection switch has two branches, and a branch connects voltage acquisition unit, separately
One branch connects external-connected port.An at least voltage is adopted on the voltage acquisition conducting wire of the battery positioned at battery pack both ends
Collect conducting wire and be equipped with selection switch, the structural schematic diagrams of battery modules as shown in figure 4, the battery in the battery pack successively
For battery one, battery two, battery three, battery four, the voltage acquisition conducting wire of battery one is 11 and 22, and conducting wire 11 is used as voltage simultaneously
The input and output conducting wire for acquiring conducting wire and battery pack, separates two branches, a branch 110 and voltage in the other end of conducting wire 11
Acquisition unit connection, conducting wire 110 connect the voltage for acquiring battery one, another branch 111 and input and output with conducting wire 11
Port connection, conducting wire 111 connect the input and output conducting wire as battery pack with conducting wire 11, and the input and output conducting wire can be used for
Charge/discharge is carried out to the battery pack.Switch can also be set on conducting wire 111, as shown in figure 4, need to battery pack into
When row charge and discharge, closure switch carry out charge/discharge to battery pack, while not influencing the normal operation of voltage acquisition unit.Together
Switch can also be arranged in reason on the voltage acquisition conducting wire of battery four, and the voltage acquisition conducting wire of battery four is 44 and 55, conducting wire 55
One end connect with battery four, the other end has two branches, wherein a branch 550 is connected with voltage acquisition unit, conducting wire 55
The voltage acquisition conducting wire for being used as battery four with 550, another branch 551 are connect with external-connected port, and conducting wire 55 is connect with 551 to be used as
The input and output conducting wire of battery pack, conducting wire 55 may be used as voltage acquisition conducting wire and the input and output of battery pack of battery four simultaneously
Conducting wire.Similarly, switch can be set on conducting wire 551, as shown in figure 5, keeping when not needing to carry out charge and discharge to battery pack
State is switched on, is had an adverse effect to avoid the voltage acquisition to battery each in battery pack.It can also be simultaneously in conducting wire
111 and conducting wire 551 on be arranged switch.When selecting the access between switch conduction battery and voltage acquisition unit, realize to electricity
The detection of each cell voltage of Chi Zuzhong can be to the battery when selecting the external-connected port of switch conduction battery and battery pack
Group carries out charge/discharge.
Setting selection switch, can realize respectively to battery pack on the voltage acquisition conducting wire of battery one or/and battery four
It carries out charge/discharge or measures the simple function of cell voltage, so that battery modules is had more multi-functional selection, advantageously reduce battery
The energy dissipation of mould group.
Further, the present invention also provides a kind of voltage detecting sides of battery modules based on the above-mentioned technical proposal
Method, in one embodiment, the flow diagram of the voltage detection method is as shown in fig. 6, include：
S51 carries out charge/discharge to the battery pack, when detection is in charge discharge state, each battery in battery pack
First voltage and positioned at battery pack both ends battery voltage acquisition conducting wire charge/discharge current；
S52, when carrying out charge/discharge based on the first voltage, the charge/discharge current and preset battery pack
The second voltage of each battery, the tertiary voltage of each battery determines the reality of each battery in the battery pack when stopping charge/discharge
Voltage.
When carrying out charge/discharge using battery modules provided in an embodiment of the present invention, the external-connected port of battery pack is circumscribed with
Charge/discharge module, the charge/discharge module can be the load for battery modules electric discharge, or charge for battery modules
Power supply, either charged state or discharge condition, the charge/discharge module and battery pack constitute conductive path, described
There is electric current to flow through on the voltage acquisition conducting wire at battery pack both ends, so that generating electricity on the voltage acquisition conducting wire at the battery pack both ends
Pressure drop, each cell voltage measured at this time, the voltage and actual cell voltage of a part of battery have certain deviation, Fig. 7 to Fig. 9
Respectively normal voltage of the battery pack when not interfered by charge/discharge, discharge condition when discharge voltage, charged state when
Charging voltage schematic diagram.It can be clearly seen that by Fig. 7 to Fig. 9, no matter battery modules are charged or discharged, and can all be influenced
It is located at the voltage sample value of the battery at battery pack both ends in battery pack, therefore, voltage detection method provided in this embodiment utilizes
The variation of cell voltage determines electricity to voltage and charge/discharge of the battery pack in preset charge discharge state afterwards for a period of time
The deviation voltage in pond is laid the groundwork for amendment cell voltage, and then is conducive to obtain the virtual voltage of each battery in battery pack.
In one embodiment, charge/discharge is carried out to the battery pack in the short time, it is described within the short time
Curent change is smaller in charge/discharge process, can be considered definite value, and the short time can be second, millisecond even Microsecond grade, tool
Body is neglected greatly depending on actual conditions.The first voltage of each battery and it is located at electricity when detection is in charge discharge state, in battery pack
The charge/discharge current of the voltage acquisition conducting wire of the battery at pond group both ends.It specifically includes：It charges, leads to the battery pack
The potential at each battery both ends in the voltage acquisition unit acquisition battery pack is crossed, and then determines the detection electricity of each battery in battery pack
Pressure is first voltage.Using external current detecting unit, the battery pack is detected when being charged, the voltage of battery pack is adopted
Collect the electric current in conducting wire, in the present embodiment, when the charging current is that battery pack is charged, flows through conducting wire 11 and conducting wire 55
Electric current.Discharge process is similar, repeats no more.
When the battery in battery pack quantity is more than 3, the virtual voltage of the battery at non-both ends is in battery pack
The first voltage.
In conjunction with the structural schematic diagram of battery pack in Fig. 3, due to the voltage acquisition conducting wire of battery in battery pack one and battery four
It is shared with the input and output conducting wire of battery pack, battery pack carries out in charge/discharge process, voltage acquisition conducting wire 11 and 55 and outside
Charge/discharge load constitutes conducting circuit, has electric current process on conducting wire 11 and conducting wire 55, portion voltage is consumed on conducting wire, influence
The voltage measurement of battery one and battery four causes the DC voltage measurement error of battery one Yu battery four.But due to battery two and electricity
The voltage acquisition conducting wire in pond three does not constitute conducting circuit, and no current flows through on voltage acquisition conducting wire, will not influence battery two and
The voltage measurement of battery three does not generate deviation voltage, i.e. deviation voltage is zero, the first voltage measured at this time be battery two with
And the virtual voltage of battery three.
In one embodiment, the voltage detection method further includes：S53, the first electricity based on battery each in battery pack
Pressure and the deviation voltage, determine the virtual voltage of each battery in battery pack.
If the battery in battery pack has deviation voltage, in conjunction with the deviation voltage of the battery, the first voltage of battery and electricity
Pond status determines the virtual voltage of the battery.The battery status includes charging, electric discharge.If the charge/discharge
Electric current is scalar, and when battery is in charged state, the voltage measuring value of the battery is higher than actual value, the practical electricity of the battery
Pressure is that the measured value of battery subtracts deviation voltage；When battery is in discharge condition, the voltage measuring value of the battery is lower than practical
Value, the virtual voltage of the battery are that the measured value of battery adds deviation voltage.
In one embodiment, described to be based on the first voltage, the charge/discharge current and preset battery pack
The tertiary voltage for carrying out the second voltage of each battery when charge/discharge, stopping each battery when charge/discharge, determines the battery
In group the step of the virtual voltage of each battery, including：
Electricity is determined in conjunction with the second voltage of battery each in battery pack, tertiary voltage and the charge/discharge current
The resistance of the voltage acquisition conducting wire at pond group both ends；
In conjunction with the first voltage of each battery, the charge/discharge current and the battery pack both ends in the battery pack
The resistance of voltage acquisition conducting wire determine the virtual voltage of each battery in battery pack.
The structural schematic diagram of battery modules as shown in connection with fig. 3 presets battery pack in charged state, battery one to battery
Four voltage is to V respectively1To V4, after disconnecting charging, the voltage of battery one to battery four is V respectively11To V44, battery one to electricity
The first voltage of Chi Si measurement when carrying out charge discharge state is v1To v4, the battery pack is in charge/discharge, in circuit
Charge/discharge current be i, the electric current i be vector, in the present embodiment, it is specified that charging current direction is negative, discharge current
It is positive, i.e., charging current is negative value, and discharge current is positive value.The equivalent resistance of conducting wire 11 and conducting wire 55 is R1、R2, the battery
One to battery four virtual voltage determination process it is as follows：The resistance R of battery pack both end voltage acquisition conducting wire is determined first1And R2；
Then in conjunction with the first voltage of each battery in the battery pack battery pack that voltage acquisition unit measures in charge/discharge, described fill
The resistance of electricity/discharge current and battery pack both end voltage acquisition conducting wire determines the virtual voltage of each battery in battery pack.
Since the voltage acquisition conducting wire 11 of battery one has electric current to flow through when battery pack carries out charge/discharge, this bar conducting wire
The voltage of upper distribution is to charge and stop under two states of charging, the voltage variety of battery one and the voltage change of battery two
The difference of amount, the resistance of conducting wire 11 are the ratio between the electric current on the voltage and this bar conducting wire distributed on this bar conducting wire, the resistance of conducting wire 55
R2, calculating process and principle and R1It is similar, it repeats no more.
The virtual voltage of each battery, that is, revised voltage calculating process is as follows in the battery pack：
Vc1=v1+i*R1,Vc4=v4+i*R2,
As seen from the above analysis, battery two and battery three do not generate deviation voltage, therefore the reality of battery two and battery three
Voltage is the first voltage measured, i.e.,：Vc2=v2, Vc3=v3。
It can determine easily according to the above technical scheme and bring deviation voltage is shared by conducting wire, and then adjust the survey of voltage
Deviation is measured, there is general applicability.
Further, the present invention also provides a kind of computer readable storage medium, it is stored thereon with computer program, it should
The step of computer program realizes voltage detection method described in any of the above-described technical solution when executing.
Further, the present invention also provides a kind of electrical equipment, any of the above-described technology is mounted on the electrical equipment
Battery modules described in scheme.
In a kind of embodiment, the electrical equipment is the mobile device for being mounted with above-mentioned battery modules, the mobile device
It can be unmanned plane, unmanned vehicle, motor vehicles and other moveable mechanical equipments.
In a kind of embodiment, the mobile device is unmanned plane, the unmanned plane include but is not limited to single rotor unmanned plane,
Multi-rotor unmanned aerial vehicle and rotor wing unmanned aerial vehicle.Rotor wing unmanned aerial vehicle usually utilizes propeller around rod or axis to rotate and generates lift.The rotation
Wing unmanned plane includes such as helicopter, rolling wing machine, autogyro, gyrodyne etc..The rotor wing unmanned aerial vehicle can
To there is the rotor of multiple multiple positions for being mounted on the unmanned plane.For example, the mobile device may include that quadrotor is gone straight up to
Machine, six heligyroes, ten heligyroes etc..The mobile device can be used for but be not limited to plant protection, takes photo by plane, transports
Field.
The above is only some embodiments of the invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of battery modules, which is characterized in that including：It is battery pack comprising several batteries, each for acquiring in battery pack
The external-connected port of the voltage acquisition unit of cell voltage, the battery pack；Each electricity in the voltage acquisition unit and battery pack
It is connected between pond by voltage acquisition conducting wire, the voltage that the battery pack passes through the external-connected port and corresponding battery pack both ends
Acquisition conducting wire connects the charge and discharge to realize the battery pack.
2. battery modules according to claim 1, which is characterized in that the voltage acquisition of the battery at the battery pack both ends is led
It is switched on line at least provided with one.
3. battery modules according to claim 1, which is characterized in that the interface quantity of the voltage acquisition unit is more than institute
State the number of batteries in battery pack.
4. battery modules according to claim 1, which is characterized in that each battery series connection in the battery pack.
5. the voltage detection method based on battery modules described in any one of Claims 1-4, which is characterized in that including：
Charge/discharge is carried out to the battery pack, when detection is in charge discharge state, the first electricity of each battery in battery pack
Pressure and positioned at battery pack both ends battery voltage acquisition conducting wire charge/discharge current；
Each battery when based on the first voltage, the charge/discharge current and preset battery pack progress charge/discharge
Second voltage, the tertiary voltage for stopping each battery when charge/discharge, determine the virtual voltage of each battery in the battery pack.
6. the voltage detection method of battery modules according to claim 5, which is characterized in that further include：
The second voltage of each battery and the third of while stopping charge/discharge each battery when carrying out charge/discharge based on battery pack
Voltage determines the deviation voltage of each battery in battery pack.
7. the voltage detection method of battery modules according to claim 5, which is characterized in that described based on first electricity
Pressure, the charge/discharge current and preset battery pack carry out the second voltage of each battery when charge/discharge, stopping is charged/
The tertiary voltage of each battery when electric discharge, the step of determining the virtual voltage of each battery in the battery pack, including：
In conjunction with the second voltage, tertiary voltage and the charge/discharge current, determine that the voltage acquisition at battery pack both ends is led
The resistance of line；
In conjunction with the electricity of the first voltage of each battery, the charge/discharge current and the battery pack both ends in the battery pack
The resistance of pressure acquisition conducting wire determines the virtual voltage of each battery in battery pack.
8. the voltage detection method of battery modules according to claim 5, which is characterized in that further include：When the battery
When the quantity of battery is more than 3 in group, the virtual voltage of the battery at non-both ends is the first voltage in battery pack.
9. a kind of computer readable storage medium, which is characterized in that be stored thereon with computer program, which executes
The step of voltage detection method described in any one of Shi Shixian claim 5 to 8.
10. a kind of electrical equipment, which is characterized in that be mounted with battery mould according to any one of claims 1 to 4 thereon
Group.
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Application publication date: 20181120 |