CN115566776A - Power battery pack charging circuit, power battery pack charging method and device - Google Patents
Power battery pack charging circuit, power battery pack charging method and device Download PDFInfo
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- CN115566776A CN115566776A CN202211401480.3A CN202211401480A CN115566776A CN 115566776 A CN115566776 A CN 115566776A CN 202211401480 A CN202211401480 A CN 202211401480A CN 115566776 A CN115566776 A CN 115566776A
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- 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
- H02J7/0019—Circuits for equalisation of charge between batteries using switched or multiplexed charge circuits
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- 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
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- 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
- H01M10/44—Methods for charging or discharging
- H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
-
- 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
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
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- 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
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
- H02J7/007184—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage in response to battery voltage gradient
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- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a power battery pack charging circuit, a power battery pack charging method and a power battery pack charging device. The invention comprises the following steps: the power battery pack comprises a plurality of single batteries connected in series, the positive pole of the power battery pack is connected with the positive pole of the charging equipment, and the negative pole of the power battery pack is connected with the negative pole of the charging equipment; the actuating mechanism comprises a plurality of flow guide devices, the flow guide devices control the charging states of the single batteries through two power lines connected with two ends of the power battery pack, and the actuating mechanism is respectively connected with the positive electrode and the negative electrode of the power battery pack through the two power lines; the invention solves the technical problem that the service life of a battery is seriously influenced by the attenuation of the capacity of the battery due to the accumulation of the pressure difference in the battery because the condition for determining the charging completion of the power battery pack in the related technology is single.
Description
Technical Field
The invention relates to the field of batteries, in particular to a power battery pack charging circuit, a power battery pack charging method and a power battery pack charging device.
Background
In the related art, the rapid development of new energy industry enables the maintenance of power batteries to be continuously increased. The capacity attenuation of the early power battery product is serious, and the basic endurance mileage is difficult to guarantee. One of the main reasons for the capacity fade of power cells is the large cell pressure difference. The difference of the working conditions of the power battery can cause the pressure difference to accumulate, so that the wooden barrel effect accelerates the capacity attenuation of the battery system.
Since only one single battery reaches the charging termination voltage and satisfies the electric quantity full-charge condition, only the single battery is determined to be fully charged, the rest single batteries are still not fully charged and have unequal voltages, and the battery pack (system) is in a partially full-charge state. If not fully charged, the lower cell voltage will seriously affect the battery (system) discharge capacity during discharge. The high integration of BMS hardware and the resistance consume power and generate heat seriously, when the charging tail end is balanced, the current carrying capacity is limited (often in milliampere level), and the balancing effect is weak.
Aiming at the problem that the service life of a battery is seriously influenced by the attenuation of the capacity of the battery due to the accumulation of the differential pressure because the condition for determining the charging completion of a power battery pack in the related technology is single, an effective solution is not provided at present.
Disclosure of Invention
The invention mainly aims to provide a power battery pack charging circuit, a power battery pack charging method and a power battery pack charging device, which are used for solving the problems that the service life of a battery is seriously influenced by the attenuation of the capacity of the battery due to the accumulation of voltage difference because the condition for determining the completion of charging of a power battery pack is single in the related technology.
To achieve the above object, according to one aspect of the present invention, there is provided a charging circuit of a power battery pack. The circuit includes: the power battery pack comprises a plurality of single batteries connected in series, the positive pole of the power battery pack is connected with the positive pole of the charging equipment, and the negative pole of the power battery pack is connected with the negative pole of the charging equipment; the actuating mechanism comprises a plurality of flow guide devices, the flow guide devices control the charging states of the single batteries through two power lines connected with two ends of the power battery pack, and the actuating mechanism is respectively connected with the positive electrode and the negative electrode of the power battery pack through the two power lines; and the switch unit group comprises a first switch unit and a second switch unit, one end of the first switch unit is connected with the anode of the power battery pack, the other end of the first switch unit is connected with the first power line, one end of the second switch unit is connected with the first power line, the other end of the second switch unit is connected with the anode of the charging equipment, and the first power line is a power line connected with the anode of the power battery pack.
Further, the flow guide device is connected with the single battery through a voltage collection wire.
Further, the actuating mechanism is also connected with a battery management system.
In order to achieve the above object, according to an aspect of the present invention, there is provided a charging method of a power battery pack. The invention comprises the following steps: judging whether the power battery pack comprises a first target single battery, wherein the first target single battery is a single battery of which the current voltage is greater than or equal to the charging termination voltage; under the condition that a first target single battery is included, stopping charging the whole power battery pack, and charging a second target single battery through target current, wherein the second target single battery is the other single batteries except the first target single battery in the power battery pack; and under the conditions that a plurality of voltages corresponding to all the single batteries in the power battery pack are greater than or equal to the charging termination voltage and the maximum voltage difference between the two single batteries in the power battery pack is less than or equal to the target voltage difference, determining that the power battery pack finishes the charging process.
Further, stopping charging the power battery pack as a whole in the case where the first target unit battery is included, includes: and controlling the first switch unit to be disconnected to disconnect the power line to stop charging the whole power battery pack, and controlling the second switch unit to be in a closed state.
Further, in the case where the first target unit cell is included, charging a second target unit cell by a target current includes: determining a first target flow guide device, controlling the first target flow guide device to be disconnected, and controlling a second target flow guide device to be connected and a second switch unit to be in a closed state, wherein the first target flow guide device is a flow guide device used for controlling the first target monomer voltage to be in a charging mode, and the second target flow guide device is a flow guide device connected with the second target flow guide device; and controlling the target current to flow through the second target current guiding device to charge the second target monomer voltage.
Further, determining that the power battery pack completes a charging process when a plurality of voltages corresponding to all the single batteries in the power battery pack are greater than or equal to a charging termination voltage and a maximum voltage difference between two single batteries in the power battery pack is less than or equal to a target voltage difference, includes: acquiring a plurality of current voltages corresponding to a plurality of single batteries in a power battery pack; determining a minimum voltage value and a maximum voltage value in the multiple current voltages, calculating a difference value between the minimum voltage value and the maximum voltage value, and determining the difference value as a maximum voltage difference; and judging the magnitude relation between the maximum voltage difference and the target voltage difference, and determining that the power battery pack completes the charging process under the condition that the maximum voltage difference is less than or equal to the target voltage difference.
Further, determining that the power battery pack completes a charging process when a plurality of voltages corresponding to all the single batteries in the power battery pack are greater than or equal to a charging termination voltage and a maximum voltage difference between two single batteries in the power battery pack is less than or equal to a target voltage difference, includes: controlling a counter to increase by one when a first target single battery is added in the power battery pack, and determining a count value in real time; determining whether the counting value is larger than or equal to a target number in real time, wherein the target number is the number of single batteries contained in the power battery pack; and under the condition that the counting value is larger than or equal to the target number, acquiring the maximum voltage difference between every two single batteries in the power battery pack, and under the condition that the maximum voltage difference is smaller than or equal to the target voltage difference, determining that the power battery pack completes the charging process.
Further, when the plurality of voltages corresponding to all the single batteries in the power battery pack are greater than or equal to the charging termination voltage and the maximum voltage difference between two single batteries in the power battery pack is less than or equal to the target voltage difference, after the power battery pack completes the charging process, the method includes: the second switching unit is controlled to be turned off to end the charging process.
In order to achieve the above object, according to another aspect of the present invention, there is provided a charging device for a power battery pack. The device includes: the judging unit is used for judging whether the power battery pack contains a first target single battery, wherein the first target single battery is a single battery with the current voltage being more than or equal to the charging termination voltage; the charging unit is used for stopping charging the whole power battery pack under the condition that the first target single battery is included, and charging a second target single battery through target current, wherein the second target single battery is the other single batteries except the first target single battery in the power battery pack; and the determining unit is used for determining that the power battery pack finishes the charging process under the condition that a plurality of voltages corresponding to all the single batteries in the power battery pack are greater than or equal to the charging termination voltage and the maximum voltage difference between two single batteries in the power battery pack is less than or equal to the target voltage difference.
According to the invention, the following structure is adopted: the power battery pack comprises a plurality of single batteries connected in series, the anode of the power battery pack is connected with the anode of the charging equipment, and the cathode of the power battery pack is connected with the cathode of the charging equipment; the actuating mechanism comprises a plurality of flow guide devices, the flow guide devices control the charging states of the single batteries through two power lines connected with two ends of the power battery pack, and the actuating mechanism is respectively connected with the positive electrode and the negative electrode of the power battery pack through the two power lines; the switch unit group comprises a first switch unit and a second switch unit, one end of the first switch unit is connected with the positive electrode of the power battery pack, the other end of the first switch unit is connected with the first power line, one end of the second switch unit is connected with the first power line, the other end of the second switch unit is connected with the positive electrode of the charging device, and the first power line is a power line connected with the positive electrode of the power battery pack. And then has reached the effect that reduces after-sale maintenance cost, extension battery life.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of a charging circuit for a power battery pack provided in accordance with an embodiment of the present invention;
fig. 2 is a flowchart of a charging method for a power battery pack according to an embodiment of the invention;
FIG. 3 is a flow chart of another method of a method for charging a power battery pack according to an embodiment of the present invention;
FIG. 4 is a flow chart of yet another method of a method of charging a power battery pack provided in accordance with an embodiment of the present invention;
FIG. 5 is a flow diagram of a charging strategy provided in accordance with another embodiment of the invention;
fig. 6 is a schematic diagram of a charging device for a power battery pack according to an embodiment of the invention.
Wherein the following reference numerals are included:
01, a power battery pack; 02, an actuating mechanism; 03, a switch unit group; 031, a first switching unit; 032, a second switch unit.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
In order to make those skilled in the art better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances in order to facilitate the description of the embodiments of the invention herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
For convenience of description, some terms or expressions referred to in the embodiments of the present invention are explained below:
a single battery: a basic unit device for mutual conversion of chemical energy and electric energy;
pressure difference: the difference in voltage between the cells;
end-of-charge voltage: the maximum voltage allowed to be reached when the energy storage unit is normally charged;
BMS: a battery management system.
According to an embodiment of the invention, a charging circuit for a power battery pack is provided.
FIG. 1 is a schematic diagram of a charging circuit for a power battery pack according to an embodiment of the invention. As shown in fig. 1, the circuit includes: a power battery pack 01, an actuating mechanism 02 and a switch unit group 03.
Specifically, the power battery pack 01 comprises a plurality of single batteries connected in series, the positive electrode of the power battery pack is connected with the positive electrode of the charging equipment, and the negative electrode of the power battery pack is connected with the negative electrode of the charging equipment; the actuating mechanism 02 comprises a plurality of flow guiding devices, the flow guiding devices control the charging states of the single batteries through two power lines connected with two ends of the power battery pack, and the actuating mechanism is respectively connected with the positive electrode and the negative electrode of the power battery pack through the two power lines; the switch unit set 03 comprises a first switch unit 031 and a second switch unit 032, one end of the first switch unit is connected with the positive pole of the power battery pack, the other end of the first switch unit is connected with a first power line, one end of the second switch unit is connected with the first power line, the other end of the second switch unit is connected with the positive pole of the charging equipment, the first power line is a power line connected with the positive pole of the power battery pack, and the flow guide device is connected with the single battery through a voltage collection line.
Specifically, this application provides foretell charging circuit, in this charging circuit, installed actuating mechanism additional between battery monomer group and battery management system, actuating mechanism includes a plurality of guiding devices, and actuating mechanism can select to charge for independent battery cell, has so realized carrying out the equilibrium and calibration to each battery cell, makes the battery can not lead to battery capacity decay seriously so that greatly reduced after-sale maintenance cost prolonged battery life because of the pressure differential accumulation.
In the embodiment provided in fig. 1, the power battery pack 01 includes three single batteries connected in series, and the actuator 02 includes two air guiding devices, and the two air guiding devices are respectively connected to two power lines to respectively control the charging states of the three single batteries.
It should be noted that the present application also provides another alternative embodiment, in which a plurality of flow-guiding devices can be replaced by a plurality of Mos tubes.
Specifically, the actuator 02 is also connected to a battery management system.
According to an embodiment of the present invention, a method of charging a power battery pack is provided.
Fig. 2 is a flowchart of a charging method of a power battery pack according to an embodiment of the present invention. As shown in fig. 2, the present invention comprises the steps of:
step S201, judging whether a power battery pack contains a first target single battery, wherein the first target single battery is a single battery with the current voltage more than or equal to the charging termination voltage;
step S202, under the condition that a first target single battery is included, stopping charging the whole power battery pack, and charging a second target single battery through target current, wherein the second target single battery is the other single batteries except the first target single battery in the power battery pack;
step S203, determining that the power battery pack completes the charging process when a plurality of voltages corresponding to all the single batteries in the power battery pack are greater than or equal to the charging termination voltage and the maximum voltage difference between two single batteries in the power battery pack is less than or equal to the target voltage difference.
Specifically, when a group of power battery pack formed by connecting n single batteries in series is charged, if any single battery voltage (Vi) does not reach a charging termination Voltage (VE), the existing charging mode is executed, that is, a large-current integral charging is performed on the battery pack (system) through a power line, when the voltage (Vi = x) of a certain single battery (a first target single battery) reaches the charging termination voltage, the integral charging is stopped, a voltage acquisition wiring harness is used for performing small-current (less than 5A) charging on the single battery (a second single battery) which does not reach the charging termination voltage, until all the single batteries reach the charging termination voltage and the maximum voltage difference (Vmax-Vmin) is lower than the target voltage difference (d), the power battery pack is judged to be in a full-charge state, and the charging is finished. The implementation mode of the invention accurately charges the monomer of the battery which is not fully charged through the way of the actuating mechanism and the voltage acquisition wiring harness, hardware is not highly integrated, the current carrying capacity can adjust the hardware configuration according to the charging current of a strategy, the heat productivity is low, the timeliness is high, and the effect is obvious.
In the present application, when the first target battery cell is included in the power battery pack 01, the large-current charging of the power battery pack 01 is stopped, and as shown in fig. 1, the first switch unit 031 is controlled to be turned off to disconnect the power line to stop the charging of the power battery pack 01 as a whole, and the second switch unit 032 is controlled to be in a closed state.
It should be noted that the steps illustrated in the flowcharts of the figures may be performed in a computer system such as a set of computer-executable instructions and that, although a logical order is illustrated in the flowcharts, in some cases, the steps illustrated or described may be performed in an order different than presented herein.
Fig. 3 is a flowchart of another method of a charging method for a power battery pack according to an embodiment of the present invention, as shown in fig. 3: charging a second target cell with a target current, including, with the first target cell included: determining a first target flow guide device, controlling the first target flow guide device to be disconnected, and controlling a second target flow guide device to be connected and a second switch unit to be in a closed state, wherein the first target flow guide device is a flow guide device used for controlling the first target monomer voltage to be in a charging mode, and the second target flow guide device is a flow guide device connected with the second target flow guide device; and controlling the target current to flow through the second target current guiding device to charge the second target monomer voltage.
The application provides an actuating mechanism, the charging of corresponding battery cell is controlled through the switch-on or switch-off of guiding device in the actuating mechanism, under the condition that detects there is first target battery cell, through the disconnected charging circuit of the battery cell of guiding device control full charge, switch-on guiding device is in order to control remaining battery cell and charge.
Fig. 4 is a flowchart of another method of a charging method for a power battery pack according to an embodiment of the present invention, as shown in fig. 4: under the condition that a plurality of voltages corresponding to all single batteries in the power battery pack are greater than or equal to the charging termination voltage and the maximum voltage difference between two single batteries in the power battery pack is less than or equal to the target voltage difference, determining that the power battery pack completes the charging process, and the method comprises the following steps: acquiring a plurality of current voltages corresponding to a plurality of single batteries in a power battery pack; determining a minimum voltage value and a maximum voltage value in the plurality of current voltages, calculating a difference value between the minimum voltage value and the maximum voltage value, and determining the difference value as a maximum voltage difference; and judging the magnitude relation between the maximum voltage difference and the target voltage difference, and determining that the power battery pack completes the charging process under the condition that the maximum voltage difference is less than or equal to the target voltage difference.
In this application, all a plurality of voltages that correspond at all battery cells in the power battery group are equal to or greater than the termination voltage that charges, and under the circumstances that the maximum voltage difference between two battery cells in the power battery group is less than or equal to the target voltage difference, confirm that the power battery group accomplishes charging process, include: controlling a counter to increase by one when a first target single battery is added in the power battery pack, and determining a count value in real time; determining whether the counting value is larger than or equal to a target number in real time, wherein the target number is the number of single batteries contained in the power battery pack; and under the condition that the counting value is larger than or equal to the target number, acquiring the maximum voltage difference between every two single batteries in the power battery pack, and under the condition that the maximum voltage difference is smaller than or equal to the target voltage difference, determining that the power battery pack completes the charging process.
In the above, through counting the fully charged single batteries in the application, and determine whether the batteries in the power battery pack are all in the fully charged state through the counting mode, under the fully charged state of the single batteries, determine the maximum voltage difference, because under the general condition, the single batteries can show the condition of virtual electricity when approaching to the fully charged state, for a plurality of periods of time, the actual voltage can slightly drop and fall to the non-fully charged state, therefore, the maximum voltage difference between every two single batteries of the power battery pack needs to be determined, and under the condition that the maximum voltage difference is less than or equal to the target voltage difference, the charging of the power battery pack is determined to be completed.
In the present application, the charging process is ended by controlling the second switch unit to be turned on.
Another alternative embodiment is provided, in which the charging strategy for the power charging group is shown in fig. 5, in the flowchart, the X cell corresponds to the first target cell in the present application, and the non-X cell corresponds to the second target cell in the present application.
The charging method of the power battery pack provided by the embodiment of the invention judges whether the power battery pack comprises a first target single battery, wherein the first target single battery is a single battery of which the current voltage is more than or equal to the charging termination voltage; under the condition that a first target single battery is included, stopping charging the whole power battery pack, and charging a second target single battery through target current, wherein the second target single battery is the other single batteries except the first target single battery in the power battery pack; under the condition that a plurality of voltages corresponding to all single batteries in the power battery pack are greater than or equal to the charging termination voltage and the maximum voltage difference between two single batteries in the power battery pack is less than or equal to the target voltage difference, the power battery pack is determined to finish the charging process, and the technical problem that the service life of the battery is seriously influenced by the battery capacity attenuation caused by the accumulated voltage difference due to the single condition for determining the completion of the charging of the power battery pack in the related technology is solved. And then has reached the effect that reduces after-sale maintenance cost, extension battery life. The embodiment of the invention also provides a power battery pack charging device, and it should be noted that the power battery pack charging device provided by the embodiment of the invention can be used for executing the power battery pack charging method provided by the embodiment of the invention. The following describes a power battery pack charging apparatus provided in an embodiment of the present invention.
FIG. 6 is a schematic diagram of a power battery pack charging apparatus according to an embodiment of the present invention. As shown in fig. 6, the apparatus includes: a determining unit 601, configured to determine whether a power battery pack includes a first target single battery, where the first target single battery is a single battery whose current voltage is greater than or equal to a charge termination voltage; the charging unit 603 is configured to, in a case where a first target single battery is included, stop charging the entire power battery pack, and charge a second target single battery through a target current, where the second target single battery is a remaining single battery of the power battery pack except the first target single battery; the determining unit 605 is configured to determine that the power battery pack completes a charging process when a plurality of voltages corresponding to all the single batteries in the power battery pack are greater than or equal to a charging termination voltage, and a maximum voltage difference between two single batteries in the power battery pack is less than or equal to a target voltage difference.
In this application, the charging unit 603 includes: and the first control subunit is used for controlling the first switch unit to be disconnected so as to disconnect the power line to stop charging the whole power battery pack and controlling the second switch unit to be in a closed state.
In this application, the charging unit 603 includes: the first determining subunit is used for determining a first target flow guide device, controlling the first target flow guide device to be switched off, and controlling a second target flow guide device to be switched on and the second switch unit to be in a closed state, wherein the first target flow guide device is a flow guide device used for controlling the first target cell voltage to be in a charging mode, and the second target flow guide device is a flow guide device connected with the second target flow guide device; and the second control subunit is used for controlling the target current to flow through the second target current guide device so as to charge the second target single voltage.
In this application, the determining unit 605 includes: the first obtaining subunit is used for obtaining a plurality of current voltages corresponding to a plurality of single batteries in the power battery pack; the second determining subunit is used for determining the minimum voltage value and the maximum voltage value in the plurality of current voltages, calculating the difference value between the minimum voltage value and the maximum voltage value, and determining the difference value as the maximum voltage difference; and the third determining subunit is used for judging the magnitude relation between the maximum voltage difference and the target voltage difference and determining that the power battery pack completes the charging process under the condition that the maximum voltage difference is less than or equal to the target voltage difference.
In this application, the determining unit 605 includes: the third control subunit is used for controlling the counter to increase by one and determining the count value in real time under the condition that each time one first target single battery is added to the power battery pack; the fourth determining subunit is used for determining whether the counting value is greater than or equal to a target number in real time, wherein the target number is the number of the single batteries contained in the power battery pack; and the second acquiring subunit is used for acquiring the maximum voltage difference between every two single batteries in the power battery pack under the condition that the counting value is greater than or equal to the target number, and determining that the power battery pack completes the charging process under the condition that the maximum voltage difference is less than or equal to the target voltage difference.
In this application, when the voltages corresponding to all the single batteries in the power battery pack are all greater than or equal to the charging termination voltage, and the maximum voltage difference between two single batteries in the power battery pack is less than or equal to the target voltage difference, after determining that the power battery pack completes the charging process, the determining unit 605 includes: and the fourth control subunit is used for controlling the second switch unit to be switched off so as to finish the charging process.
The charging device for the power battery pack provided by the embodiment of the invention is used for judging whether the power battery pack comprises a first target single battery or not through the judging unit 601, wherein the first target single battery is a single battery of which the current voltage is more than or equal to the charging termination voltage; a charging unit 603, configured to, in a case where a first target single battery is included, stop charging the entire power battery pack, and charge a second target single battery through a target current, where the second target single battery is a remaining single battery in the power battery pack except the first target single battery; the determining unit 605 is configured to determine that the power battery pack completes the charging process when the voltages corresponding to all the single batteries in the power battery pack are greater than or equal to the charging termination voltage and the maximum voltage difference between two single batteries in the power battery pack is less than or equal to the target voltage difference, so as to solve the technical problem that the condition for determining that the charging of the power battery pack completes is single in the related art, so that the service life of the battery is seriously affected by the attenuation of the battery capacity due to the accumulation of the voltage difference, thereby achieving the effects of reducing the after-sale maintenance cost and prolonging the service life of the battery.
The power battery pack charging device comprises a processor and a memory, wherein the judging unit 601 and the like are stored in the memory as program units, and the processor executes the program units stored in the memory to realize corresponding functions.
The processor comprises a kernel, and the kernel calls the corresponding program unit from the memory. The kernel can be set to be one or more than one, and the technical problem that the service life of the battery is seriously influenced by the battery capacity attenuation caused by the accumulated differential pressure due to the fact that the condition for determining the charging completion of the power battery pack in the related technology is single is solved by adjusting the kernel parameters.
The memory may include volatile memory in a computer readable medium, random Access Memory (RAM) and/or nonvolatile memory such as Read Only Memory (ROM) or flash memory (flash RAM), and the memory includes at least one memory chip.
An embodiment of the present invention provides a storage medium having a program stored thereon, the program implementing the charging method of a power battery pack when executed by a processor.
The embodiment of the invention provides a processor, which is used for running a program, wherein the program executes the charging method of the power battery pack during running.
The embodiment of the invention provides equipment, which comprises a processor, a memory and a program which is stored on the memory and can run on the processor, wherein the processor executes the program and realizes the following steps: judging whether the power battery pack contains a first target single battery, wherein the first target single battery is a single battery with the current voltage being more than or equal to the charging termination voltage; under the condition that the first target single battery is included, stopping charging the whole power battery pack, and charging a second target single battery through target current, wherein the second target single battery is the other single batteries except the first target single battery in the power battery pack; and under the condition that a plurality of voltages corresponding to all the single batteries in the power battery pack are greater than or equal to the charging termination voltage and the maximum voltage difference between two single batteries in the power battery pack is less than or equal to the target voltage difference, determining that the power battery pack completes the charging process.
Further, stopping charging the power battery pack as a whole in the case where the first target unit battery is included, includes: and controlling the first switch unit to be disconnected to disconnect the power line to stop charging the whole power battery pack, and controlling the second switch unit to be in a closed state.
Further, in the case where the first target unit cell is included, charging a second target unit cell by a target current includes: determining a first target flow guide device, controlling the first target flow guide device to be disconnected, and controlling a second target flow guide device to be connected and a second switch unit to be in a closed state, wherein the first target flow guide device is a flow guide device used for controlling the first target monomer voltage to be in a charging mode, and the second target flow guide device is a flow guide device connected with the second target flow guide device; and controlling the target current to flow through the second target current guiding device to charge the second target monomer voltage.
Further, determining that the power battery pack completes a charging process when a plurality of voltages corresponding to all the single batteries in the power battery pack are greater than or equal to a charging termination voltage and a maximum voltage difference between two single batteries in the power battery pack is less than or equal to a target voltage difference, includes: acquiring a plurality of current voltages corresponding to a plurality of single batteries in a power battery pack; determining a minimum voltage value and a maximum voltage value in the plurality of current voltages, calculating a difference value between the minimum voltage value and the maximum voltage value, and determining the difference value as a maximum voltage difference; and judging the magnitude relation between the maximum voltage difference and the target voltage difference, and determining that the power battery pack completes the charging process under the condition that the maximum voltage difference is less than or equal to the target voltage difference.
Further, determining that the power battery pack completes a charging process when a plurality of voltages corresponding to all the single batteries in the power battery pack are greater than or equal to a charging termination voltage and a maximum voltage difference between two single batteries in the power battery pack is less than or equal to a target voltage difference, includes: controlling a counter to increase by one when a first target single battery is added in the power battery pack, and determining a count value in real time; determining whether the counting value is larger than or equal to a target number in real time, wherein the target number is the number of single batteries contained in the power battery pack; and under the condition that the counting value is larger than or equal to the target number, acquiring the maximum voltage difference between every two single batteries in the power battery pack, and under the condition that the maximum voltage difference is smaller than or equal to the target voltage difference, determining that the power battery pack finishes the charging process.
Further, when the plurality of voltages corresponding to all the single batteries in the power battery pack are greater than or equal to the charging termination voltage and the maximum voltage difference between two single batteries in the power battery pack is less than or equal to the target voltage difference, after the power battery pack completes the charging process, the method includes: the second switching unit is controlled to be turned off to end the charging process.
The device herein may be a server, a PC, a PAD, a mobile phone, etc.
The invention also provides a computer program product adapted to perform a program for initializing the following method steps when executed on a data processing device: judging whether the power battery pack comprises a first target single battery, wherein the first target single battery is a single battery of which the current voltage is greater than or equal to the charging termination voltage; under the condition that a first target single battery is included, stopping charging the whole power battery pack, and charging a second target single battery through target current, wherein the second target single battery is the other single batteries except the first target single battery in the power battery pack; and under the condition that a plurality of voltages corresponding to all the single batteries in the power battery pack are greater than or equal to the charging termination voltage and the maximum voltage difference between two single batteries in the power battery pack is less than or equal to the target voltage difference, determining that the power battery pack completes the charging process.
Further, stopping charging the power battery pack as a whole in the case where the first target unit battery is included, includes: and controlling the first switch unit to be disconnected to disconnect the power line to stop charging the whole power battery pack, and controlling the second switch unit to be in a closed state.
Further, in the case where the first target unit cell is included, charging a second target unit cell by a target current includes: determining a first target flow guide device, controlling the first target flow guide device to be disconnected, and controlling a second target flow guide device to be connected and a second switch unit to be in a closed state, wherein the first target flow guide device is a flow guide device used for controlling the first target monomer voltage to be in a charging mode, and the second target flow guide device is a flow guide device connected with the second target flow guide device; and controlling the target current to flow through the second target current guiding device to charge the second target monomer voltage.
Further, determining that the power battery pack completes a charging process when a plurality of voltages corresponding to all the single batteries in the power battery pack are greater than or equal to a charging termination voltage and a maximum voltage difference between two single batteries in the power battery pack is less than or equal to a target voltage difference, includes: acquiring a plurality of current voltages corresponding to a plurality of single batteries in a power battery pack; determining a minimum voltage value and a maximum voltage value in the multiple current voltages, calculating a difference value between the minimum voltage value and the maximum voltage value, and determining the difference value as a maximum voltage difference; and judging the magnitude relation between the maximum voltage difference and the target voltage difference, and determining that the power battery pack completes the charging process under the condition that the maximum voltage difference is less than or equal to the target voltage difference.
Further, determining that the power battery pack completes a charging process when a plurality of voltages corresponding to all the single batteries in the power battery pack are greater than or equal to a charging termination voltage and a maximum voltage difference between two single batteries in the power battery pack is less than or equal to a target voltage difference, includes: controlling a counter to increase by one under the condition that a first target single battery is added in the power battery pack every time, and determining a count value in real time; determining whether the counting value is larger than or equal to a target number in real time, wherein the target number is the number of single batteries contained in the power battery pack; and under the condition that the counting value is larger than or equal to the target number, acquiring the maximum voltage difference between every two single batteries in the power battery pack, and under the condition that the maximum voltage difference is smaller than or equal to the target voltage difference, determining that the power battery pack completes the charging process.
Further, when the plurality of voltages corresponding to all the single batteries in the power battery pack are greater than or equal to the charging termination voltage and the maximum voltage difference between two single batteries in the power battery pack is less than or equal to the target voltage difference, after the power battery pack completes the charging process, the method includes: the second switching unit is controlled to be turned off to end the charging process.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include forms of volatile memory in a computer readable medium, random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). The memory is an example of a computer-readable medium.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Disks (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The above description is only an example of the present invention and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (12)
1. A power battery charging circuit, comprising:
the power battery pack (01) comprises a plurality of single batteries connected in series, the positive pole of the power battery pack is connected with the positive pole of the charging equipment, and the negative pole of the power battery pack is connected with the negative pole of the charging equipment;
the actuating mechanism (02) comprises a plurality of flow guide devices, the flow guide devices control the charging states of the single batteries through two power lines connected with two ends of the power battery pack, and the actuating mechanism is respectively connected with the positive electrode and the negative electrode of the power battery pack through the two power lines;
switch unit group (03), including first switch unit (031) and second switch unit (032), the one end of first switch unit with the anodal of power battery group is connected, and the other end is connected with first power line, the one end of second switch unit with first power line is connected, the other end with battery charging outfit the anodal is connected, first power line be with the power battery group anodal be connected the power line.
2. The charging circuit of claim 1, wherein the current conducting device is connected to the cell via a voltage collection line.
3. The charging circuit according to claim 1, characterized in that the actuator (02) is also connected to a battery management system.
4. A method for charging a power battery pack, the method being applied to a charging circuit of a power battery pack according to any one of claims 1 to 3, the method comprising:
judging whether the power battery pack comprises a first target single battery or not, wherein the first target single battery is a single battery of which the current voltage is greater than or equal to the charging termination voltage;
under the condition that the first target single battery is included, stopping charging the whole power battery pack, and charging a second target single battery through target current, wherein the second target single battery is the other single batteries except the first target single battery in the power battery pack;
and under the condition that a plurality of voltages corresponding to all the single batteries in the power battery pack are greater than or equal to the charging termination voltage and the maximum voltage difference between two single batteries in the power battery pack is less than or equal to a target voltage difference, determining that the power battery pack finishes the charging process.
5. The method of claim 4, wherein stopping charging the power battery pack as a whole, including the first target cell, comprises:
and controlling the first switch unit to be disconnected to disconnect the power line to stop charging the whole power battery pack, and controlling the second switch unit to be in a closed state.
6. The method of claim 4, wherein charging a second target cell with a target current, including the first target cell, comprises:
determining a first target diversion device, controlling the first target diversion device to be disconnected, and controlling a second target diversion device to be connected and the second switch unit to be in a closed state, wherein the first target diversion device is a diversion device used for controlling the first target cell voltage to be in a charging mode, and the second target diversion device is the diversion device connected with the second target diversion device;
and controlling a target current to flow through the second target current-guiding device to charge the second target cell voltage.
7. The method according to claim 4, wherein determining that the power battery pack completes a charging process in a case that the plurality of voltages corresponding to all the single batteries in the power battery pack are greater than or equal to the charging termination voltage and the maximum voltage difference between two single batteries in the power battery pack is less than or equal to a target voltage difference comprises:
obtaining a plurality of current voltages corresponding to a plurality of single batteries in the power battery pack;
determining a minimum voltage value and a maximum voltage value in the plurality of current voltages, calculating a difference value between the minimum voltage value and the maximum voltage value, and determining the difference value as the maximum voltage difference;
and judging the magnitude relation between the maximum voltage difference and the target voltage difference, and determining that the power battery pack completes the charging process under the condition that the maximum voltage difference is less than or equal to the target voltage difference.
8. The method of claim 4, wherein determining that the power battery pack completes a charging process in a case that a maximum voltage difference between two of the single batteries in the power battery pack is less than or equal to a target voltage difference comprises:
controlling a counter to increase by one when detecting that one first target single battery is added in the power battery pack, and determining a count value in real time;
determining whether the counting value is greater than or equal to a target number in real time, wherein the target number is the number of single batteries contained in the power battery pack;
and acquiring the maximum voltage difference between every two single batteries in the power battery pack when the counting value is more than or equal to the target number, and determining that the power battery pack completes the charging process when the maximum voltage difference is less than or equal to the target voltage difference.
9. The method according to claim 4, wherein in a case that the maximum voltage difference between two single batteries in the power battery pack is less than or equal to a target voltage difference, after determining that the power battery pack completes a charging process, the method comprises:
controlling the second switching unit to be turned off to end the charging process.
10. A device for charging a power battery pack, the device being applied to a charging circuit of a power battery pack according to any one of claims 1 to 3, the device comprising:
the judging unit is used for judging whether the power battery pack comprises a first target single battery, wherein the first target single battery is a single battery with the current voltage being more than or equal to the charging termination voltage;
the charging unit is used for stopping charging the whole power battery pack under the condition that the first target single battery is included, and charging a second target single battery through target current, wherein the second target single battery is the other single batteries except the first target single battery in the power battery pack;
and the determining unit is used for determining that the power battery pack finishes the charging process under the condition that the maximum voltage difference between two single batteries in the power battery pack is less than or equal to a target voltage difference.
11. A computer-readable storage medium, comprising a stored program, wherein the program, when executed, controls an apparatus in which the computer-readable storage medium is located to perform a method for charging a power battery pack according to any one of claims 4 to 9.
12. A processor configured to run a program, wherein the program is configured to execute a method of charging a power battery pack according to any one of claims 4 to 9.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101599560A (en) * | 2009-07-06 | 2009-12-09 | 林道勇 | The charging device of lithium secondary battery and charging method |
| JP2012209994A (en) * | 2011-03-29 | 2012-10-25 | Ntt Facilities Inc | Charge control device for lithium ion battery pack, control method and lithium ion battery pack system |
| TW201608795A (en) * | 2014-08-22 | 2016-03-01 | 仁寶電腦工業股份有限公司 | Charging method and charging system using the same |
| CN109921490A (en) * | 2019-03-27 | 2019-06-21 | 西安科技大学 | A kind of lithium battery Pressure and Control system and the control method based on the system |
| CN114643899A (en) * | 2020-12-21 | 2022-06-21 | 宝能汽车集团有限公司 | Balancing method of power battery pack and battery management system |
-
2022
- 2022-11-09 CN CN202211401480.3A patent/CN115566776A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101599560A (en) * | 2009-07-06 | 2009-12-09 | 林道勇 | The charging device of lithium secondary battery and charging method |
| JP2012209994A (en) * | 2011-03-29 | 2012-10-25 | Ntt Facilities Inc | Charge control device for lithium ion battery pack, control method and lithium ion battery pack system |
| TW201608795A (en) * | 2014-08-22 | 2016-03-01 | 仁寶電腦工業股份有限公司 | Charging method and charging system using the same |
| CN109921490A (en) * | 2019-03-27 | 2019-06-21 | 西安科技大学 | A kind of lithium battery Pressure and Control system and the control method based on the system |
| CN114643899A (en) * | 2020-12-21 | 2022-06-21 | 宝能汽车集团有限公司 | Balancing method of power battery pack and battery management system |
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