CN111725577A - Battery formation circuit and battery formation device - Google Patents
Battery formation circuit and battery formation device Download PDFInfo
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- CN111725577A CN111725577A CN201910223396.9A CN201910223396A CN111725577A CN 111725577 A CN111725577 A CN 111725577A CN 201910223396 A CN201910223396 A CN 201910223396A CN 111725577 A CN111725577 A CN 111725577A
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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
- H01M10/446—Initial charging measures
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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
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
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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
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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
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
The invention belongs to the technical field of batteries, and mainly provides a battery formation circuit and a battery formation device, wherein the battery formation circuit comprises: the battery pack comprises a plurality of batteries to be formed, a plurality of batteries to be formed and a power supply, wherein the batteries to be formed are sequentially connected in series and are connected with the power supply to form a series circuit; the sampling module is connected with the plurality of batteries to be formed and is used for sampling the performance parameters and the working state of each battery to be formed; and the upper computer is connected with the power supply and the sampling module, the upper computer controls the current signal output by the power supply according to performance parameters, the working state and the instruction input by a user to charge or discharge a plurality of to-be-formed batteries, the to-be-formed batteries are sequentially connected in series to form a loop with the power supply, the to-be-formed battery formation process can be completed by only adopting two transmission lines, and the problems of high wire cost and high energy loss caused by more transmission lines in the traditional formation process are solved.
Description
Technical Field
The invention belongs to the technical field of batteries, and particularly relates to a battery formation circuit and a battery formation device.
Background
The power lithium battery needs to be activated through a formation process for the positive electrode and the negative electrode inside the battery after production and manufacturing are completed, the traditional formation process is to form a single battery by adopting power supply equipment, and the single battery is connected with a corresponding battery through each charging and discharging channel, wherein each battery needs to be connected with two transmission lines comprising the positive electrode and the negative electrode to form a loop, for example, if one formation equipment is provided with 24 charging and discharging channels, 48 transmission lines need to be connected, and if one formation equipment is provided with 36 charging and discharging channels, 72 transmission lines need to be connected. However, the formation transmission current of the power lithium battery is high, the requirement on a transmission line is high, the cost of the transmission line with the single length is much higher than that of a common transmission line, and in the formation process, a certain space interval is required between a power supply and the battery so as to prevent heat emitted by the power supply from influencing the formation environment of the battery, so that the length of a single transmission line is 6-10 m, and each line has energy loss.
Therefore, how to reduce the wire cost and energy loss caused by more transmission lines in the traditional formation process and reduce the comprehensive cost of the formation process become problems to be solved urgently.
Disclosure of Invention
The invention aims to provide a battery formation circuit and a battery formation device, and aims to solve the problems of high wire cost and high energy loss caused by more transmission lines in the traditional formation process.
The embodiment of the invention provides a battery formation circuit which is connected with a power supply, and the battery formation circuit comprises:
the plurality of to-be-formed batteries are sequentially connected in series and are connected with the power supply to form a series circuit;
the sampling module is connected with the batteries to be formed and is used for sampling the performance parameters and the working state of each battery to be formed; and
the upper computer is respectively connected with the power supply and the sampling module and is used for acquiring the performance parameters and the working state, and controlling the current signal output by the power supply according to the performance parameters, the working state and an instruction input by a user so as to charge or discharge a plurality of batteries to be formed.
Optionally, the battery formation circuit further includes:
the battery pack comprises a plurality of batteries to be formed, a plurality of switch switching modules and a plurality of battery management modules, wherein the plurality of switch switching modules are respectively connected with the plurality of batteries to be formed in a one-to-one correspondence mode, a first channel of each switch switching module is connected with the corresponding battery to be formed in series, and a second channel of each switch switching module is connected with the corresponding battery to be formed in parallel.
Optionally, the battery formation circuit further includes:
and the switch switching control module is connected with the switch switching modules and is used for switching and controlling the channels of the switch switching modules.
Optionally, the upper computer is further configured to output a corresponding switch switching instruction according to the performance parameters and the working states of the multiple batteries to be formed;
the switch switching control module is further configured to receive the switch switching instruction, and perform switching control on channels of the plurality of switch switching modules according to the switch switching instruction.
Optionally, the upper computer is further configured to output a corresponding switch switching instruction when the capacitance of the to-be-formed battery is greater than or equal to a preset threshold capacitance, so as to control the switch switching control module to switch the corresponding channel of the switch switching module from the first channel to the second channel.
Optionally, the switch switching module includes a relay, a first end of the relay is connected to a first end of the series circuit, a first contact of a second end of the relay is connected to a first end of the battery to be formed, and a second contact of the second end of the relay is connected to a second end of the battery to be formed.
Optionally, the power supply is a balanced charge and discharge machine.
Optionally, the performance parameters include: battery capacity, battery voltage, charge-discharge current, operating condition includes: battery temperature status, wiring status.
Optionally, each to-be-formed battery is connected with the sampling module through a current sampling line, a first voltage sampling line and a second voltage sampling line, wherein the positive electrode of the current sampling line, the positive electrode of the first voltage sampling line and the positive electrode of the to-be-formed battery are connected in common, the negative electrode of the current sampling line, the negative electrode of the first voltage sampling line and the negative electrode of the to-be-formed battery are connected in common, the positive electrode of the second voltage sampling line is connected with a positive connector end, and the negative electrode of the second voltage sampling line is connected with a negative connector end.
The application also provides a battery formation device, the battery formation device includes:
a power source; and
the battery formation circuit of any preceding claim, connected to the power source.
The invention provides a battery formation circuit and a battery formation device, wherein the battery formation circuit comprises: the system comprises a plurality of batteries to be formed, a power supply and a controller, wherein the batteries to be formed are sequentially connected in series and are connected with the power supply to form a series circuit; the sampling module is connected with the batteries to be formed and is used for sampling the performance parameters and the working state of each battery to be formed; and the host computer is respectively connected with the power supply and the sampling module, the host computer is used for controlling the current signal output by the power supply according to the performance parameters, the working state and the instruction input by a user so as to charge or discharge a plurality of batteries to be formed, and the batteries to be formed are sequentially connected in series to form a loop with the power supply, so that the forming process of the batteries to be formed can be completed only by adopting two transmission lines, and the problems of high wire cost and high energy loss caused by more transmission lines in the traditional forming process are solved.
Drawings
Fig. 1 is a schematic structural diagram of a battery formation circuit according to an embodiment of the present disclosure.
Fig. 2 is a schematic structural diagram of a battery formation circuit according to another embodiment of the present application.
Fig. 3 is a schematic structural diagram of a battery formation circuit according to another embodiment of the present application.
Fig. 4 is a schematic structural diagram of a battery formation circuit according to another embodiment of the present application.
Fig. 5 is a schematic structural diagram of a battery formation circuit according to another embodiment of the present application.
Fig. 6 is a schematic structural diagram of a battery formation circuit according to another embodiment of the present application.
Fig. 7 is a schematic diagram of the connection state between the relay switch and the battery to be formed when the battery formation circuit works normally.
Fig. 8 is a schematic diagram of the connection state of the relay switch when the battery to be formed is abnormal.
Fig. 9 is a schematic diagram of connection between a battery to be formed and a sampling module according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Fig. 1 is a schematic structural diagram of a battery formation circuit according to an embodiment of the present application, and referring to fig. 1, the battery formation circuit in the embodiment is connected to a power supply 10, and the battery formation circuit includes:
the battery B to be formed is sequentially connected in series and is connected with the power supply 10 to form a series circuit;
the sampling module 20 is connected with the plurality of batteries B to be formed and is used for sampling the performance parameters and the working state of each battery B to be formed; and
and the upper computer 30 is respectively connected with the power supply 10 and the sampling module 20, and is used for acquiring the performance parameters and the working state, and controlling the current signal output by the power supply 10 according to the performance parameters, the working state and an instruction input by a user so as to charge or discharge the plurality of batteries B to be formed.
In this embodiment, a plurality of to-be-formed batteries B are sequentially connected in series, specifically, a positive electrode of a first to-be-formed battery B is connected to a first end of the power supply 10, a positive electrode of a second to-be-formed battery B is connected to a negative electrode of the first to-be-formed battery B, a positive electrode of a third to-be-formed battery B is connected to a negative electrode of the second to-be-formed battery B, and so on, a positive electrode of an nth to-be-formed battery B is connected to a negative electrode of an N-1 th to-be-formed battery B, and a negative electrode of the nth to-be-formed battery B is connected to a second end of the power supply 10, where the nth to-be-formed battery B is a last to-be-formed battery N of the N to-be-formed batteries B connected in series, and N. Through waiting to become battery B with N and connect in proper order series connection, and form the return circuit with power 10, thereby make the user just need two transmission lines when waiting to become battery B to become the technology N, and the quantity of transmission line can not change along with waiting to become the quantity change of battery B, wherein, a transmission line is used for connecting the first positive pole of waiting to become battery B and the first end of power 10, another transmission line is used for connecting the N negative pole of waiting to become battery B and the second end of power 10, required transmission line quantity in the technology of greatly reduced battery formation, the energy loss in the technology of battery formation has also been reduced simultaneously. In this embodiment, the sampling module 20 samples the performance parameter and the working state of each to-be-formed battery B and uploads the performance parameter and the working state to the upper computer 30, and the upper computer 30 can control the output current and the working state of the power supply 10 according to the performance parameter and the working state of the to-be-formed battery B, for example, when the detection result indicates that the battery capacity of the to-be-formed battery B is full or reaches a preset battery voltage, the power supply 10 is controlled to stop charging the to-be-formed battery B.
Fig. 2 is a schematic structural diagram of a battery formation circuit according to another embodiment of the present application, and referring to fig. 2, the battery formation circuit in this embodiment further includes:
and the display module 40 is used for displaying the performance parameters and the working state.
In this embodiment, the display module 40 displays the performance parameters and the working state of the battery to be formed, and the user can judge the state of the battery formation process by observing the performance parameters or the working state displayed by the display module 40 in real time and input a control instruction to the upper computer 30 to adjust the output current of the power supply 10 according to the user requirement.
Fig. 3 is a schematic structural diagram of a battery formation circuit according to another embodiment of the present application, and referring to fig. 3, the battery formation circuit further includes:
the battery pack comprises a plurality of to-be-formed batteries B, a plurality of switch switching modules A and a plurality of to-be-formed batteries B, wherein the switch switching modules A are connected with the to-be-formed batteries B in a one-to-one correspondence mode respectively, a first channel of each switch switching module A is connected with the corresponding to-be-formed battery B in series, and a second channel of each switch switching module A is connected with the corresponding to-be-formed battery B in parallel.
In this embodiment, the sampling module 20 samples the performance parameters and the working status of each to-be-formed battery B and uploads the sampled performance parameters and the working status to the upper computer 30, and the upper computer 30 can obtain the working status and the performance parameters of each to-be-formed battery, and because each to-be-formed battery has different conditions, for example, some batteries may reach a condition that the battery is fully charged first, some batteries may be damaged in a formation process, and so on. Each switch switching module a is used for controlling a corresponding to-be-formed battery B, when a certain to-be-formed battery B is damaged, the upper computer 30 acquires the working state and the performance parameters of the to-be-formed battery B and sends out a corresponding alarm or display, and at the moment, the channel of the switch switching module a corresponding to the to-be-formed battery B can be switched from the first channel to the second channel, so that the to-be-formed battery B is separated from the series circuit, and the formation process of the remaining to-be-formed batteries cannot be influenced.
Fig. 4 is a schematic structural diagram of a battery formation circuit according to another embodiment of the present application, and referring to fig. 4, the battery formation circuit in this embodiment further includes:
and the switch switching control module 50 is connected with the plurality of switch switching modules a and is used for switching and controlling the channels of the plurality of switch switching modules a.
In this embodiment, the sampling module 20 samples the performance parameters and the working status of each battery B to be formed, and uploads the performance parameters and the working status of each battery B to be formed to the upper computer 30, because the situation of each battery B to be formed is different, after the upper computer 30 obtains the performance parameters and the working status of each battery B to be formed, it is determined whether the performance parameters and the working status of each battery B to be formed conform to the preset normalization parameters, if the performance parameters and the working status of one battery B to be formed do not conform to the preset normalization parameters, it is determined that the battery B to be formed is in an abnormal state, a user can output a corresponding control instruction through the switch switching control module 50, and control the channel of the switch switching module a corresponding to the battery B to be formed to be switched from the first channel to the second channel, so that the battery B to be formed is separated from the series circuit, thereby not influencing the formation process of the rest batteries to be formed.
In one embodiment, the upper computer 30 is further configured to output a corresponding switch switching instruction when the voltage value of the battery to be formed is greater than or equal to a first preset voltage threshold, or when the voltage value of the battery to be formed is less than or equal to a second preset voltage threshold, so as to control the switch switching control module to switch the corresponding channel of the switch switching module from the first channel to the second channel.
In one embodiment, the upper computer 30 may output the abnormal information of the battery B to be converted into the battery B through the voice playing device, wherein the information of the battery B to be converted into the battery B includes the number of the abnormal battery B to be converted into the battery B and the abnormal type.
Fig. 5 is a schematic structural diagram of a battery formation circuit according to another embodiment of the present application, and referring to fig. 5, the upper computer 30 is further configured to output a corresponding switch switching instruction according to the performance parameters and the working states of the batteries B to be formed;
the switch switching control module 50 is further configured to receive the switch switching instruction, and perform switching control on the channels of the plurality of switch switching modules a according to the switch switching instruction.
In this embodiment, the sampling module 20 samples the performance parameters and the working states of each battery B to be formed, and uploads the performance parameters and the working states to the upper computer 30, the upper computer 30 can obtain the working states and the performance parameters of each battery B to be formed, because the situation of each battery B to be formed is different, after the upper computer 30 obtains the performance parameters and the working states of each battery B to be formed, it is determined whether the performance parameters and the working states of each battery B to be formed conform to the preset normalization parameters, and generates the number of the battery B to be formed which does not conform to the preset normalization parameters, and then sends the corresponding switch switching instruction according to the number of the battery B to be formed which does not conform to the preset normalization parameters, and the switch switching control module 50 switches the corresponding channel of the switch switching module a from the first channel to the second channel after receiving the switch switching instruction, so that the battery B to be formed is separated from the series circuit, thereby not influencing the formation process of the rest batteries to be formed. Specifically, each to-be-formed battery B and the corresponding switch switching module a have different numbers, if the performance parameter and the working state of the to-be-formed battery B do not conform to the preset normalization parameters, the upper computer 30 determines that the to-be-formed battery B is in an abnormal state, and the switch switching control module 50 receives the switch switching instruction and then controls the switch switching module a with the same number to switch the channel of the to-be-formed battery B from the first channel to the second channel, so that the to-be-formed battery B is separated from the series circuit.
In one embodiment, the upper computer 30 is further configured to output a corresponding switch switching instruction to control the switch switching control module 50 to switch the channel of the corresponding switch switching module a from the first channel to the second channel when the capacitance of the to-be-formed battery B is greater than or equal to a preset threshold capacitance.
Fig. 6 is a schematic structural diagram of a battery formation circuit according to another embodiment of the present application, and referring to fig. 6, the switch switching module a includes a relay, a first end of the relay is connected to a first end of the series circuit, a first contact of a second end of the relay is connected to a corresponding first end of the battery to be formed, and a second contact of the second end of the relay is connected to a corresponding second end of the battery to be formed.
Specifically, in order to prevent the situation that a certain serial to-be-formed battery B cannot finish charging and discharging due to damage or the situation that the to-be-formed battery B is fully charged firstly when the to-be-formed battery B is charged due to inconsistency of the to-be-formed battery B, and in order to prevent the situation that the to-be-formed battery B stops supplying power to the whole serial to-be-formed battery B due to reasons such as overcharge of the to-be-formed battery B, each to-be-formed battery B is serially connected by a relay switch, fig. 7 is a schematic diagram of the connection state of the relay switch and the to-be-formed battery when the battery formation circuit normally works, the relay switch A1 is correspondingly connected with the to-be-formed battery B1, the relay switch A2 is correspondingly connected with the to-be-formed battery B2, as shown in fig. 7, one connection point of the relay switch is serially connected with the to-be-formed battery B, and the other, in normal operation, the relay switch is connected in series with the battery B to be formed. Each battery B to be formed is connected with the sampling module 20, the sampling module 20 samples the performance parameters and the working state of each battery B to be formed and uploads the performance parameters and the working state of each battery B to be formed to the upper computer 30, the upper computer 30 judges whether the performance parameters and the working state of each battery B to be formed conform to the preset normalization parameters or not after acquiring the performance parameters and the working state of each battery B to be formed, if the performance parameters and the working state of each battery B to be formed do not conform to the preset normalization parameters, the upper computer 30 judges that the battery B to be formed is in an abnormal state, if the upper computer 30 judges that the battery B to be formed is in the abnormal state according to the sampling data, the switch switching control module 50 is controlled to switch the corresponding relay switch, the abnormal battery B to be formed is cut off the series circuit through short circuit, so that the remaining batteries are not influenced to be formed continuously, fig. 8 is a schematic diagram of a connection state of the relay switch when the to-be-formed battery B1 is abnormal, and as shown in fig. 8, the upper computer 30 controls the switch switching control module 50 to switch the corresponding relay switch a1, and switches the contact of the relay a1 to a short-circuit bypass that is parallel to the to-be-formed battery B, so as to disconnect the abnormal to-be-formed battery B from the series circuit by short-circuit.
In one embodiment, the control switch switching control module 50 may be a relay switch control system.
In one embodiment, the power supply 10 is a balanced charge and discharge machine.
In one embodiment, the performance parameters include: battery capacity, battery voltage, charging current; the working state comprises: battery temperature status, wiring status. In this embodiment, the sampling module 20 samples the performance parameter and the working state of each battery B to be formed, and uploads the performance parameter and the working state of each battery B to be formed to the upper computer 30, after the upper computer 30 obtains the performance parameter and the working state of each battery B to be formed, the upper computer 30 determines whether the performance parameter and the working state of each battery B to be formed meet the preset normalization parameter, if the performance parameter and the working state of each battery B to be formed do not meet the preset normalization parameter, the upper computer 30 determines that the battery B to be formed is in an abnormal state, for example, if the battery capacity of the battery B to be formed reaches the preset full-battery capacity, the upper computer 30 determines that the battery B to be formed has completed the formation process, the switch switching module a corresponding to the battery B to be formed switches its channel from the first channel to the second channel, so as to timely disconnect the battery B from the series circuit, without affecting the continuous formation of other batteries; if the battery temperature state of the battery B to be formed shows that the temperature of the battery B to be formed is higher than the preset temperature threshold, the upper computer 30 controls the switch switching module a corresponding to the battery B to be formed to switch the channel thereof from the first channel to the second channel, so as to timely disconnect the battery B to be formed from the series circuit without affecting the continuous formation of the other batteries.
In this embodiment, the upper computer 30 may further determine whether the formation process of the battery B to be formed in the formation process is normal according to the connection state of the battery B to be formed, if the connection state does not conform to the preset connection state, the upper computer 30 sends out corresponding abnormal connection information, and the user may overhaul the corresponding battery B to be formed according to the abnormal connection information.
In an embodiment, fig. 9 is a schematic connection diagram of a to-be-formed battery and a sampling module provided in an embodiment of the present application, and referring to fig. 9, each of the to-be-formed batteries B is connected to the sampling module through a current sampling line, a first voltage sampling line and a second voltage sampling line, wherein a positive electrode (I +) of the current sampling line and a positive electrode (V) of the first voltage sampling line1(+) and the positive electrode of the battery to be formed, the negative electrode (I-) of the current sampling line and the negative electrode (I-) of the first voltage sampling lineNegative electrode (V)1-) and the negative electrode of the battery to be formed are connected together, the positive electrode (Vs +) of the second voltage sampling line is connected with the positive electrode connector end (+), and the negative electrode (Vs-) of the second voltage sampling line is connected with the negative electrode connector end (-).
In this embodiment, in order to accurately determine the abnormal condition of the to-be-formed battery B, the voltage sampling of the to-be-formed battery B adopts a six-wire dual-voltage loop form, that is, a connection mode of two current sampling wires and four voltage sampling wires, specifically, the current sampling wires are connected to current loops in front of and behind the single to-be-formed battery B, the first voltage sampling wires are respectively connected to the positive electrode end of the battery and the negative electrode end of the battery, so as to obtain the voltage parameter V1The second voltage sampling line is respectively connected with the positive electrode connector end and the negative electrode connector end of the battery to obtain a voltage parameter Vs, and the battery connector is self-provided with impedance, so the voltage parameter Vs is converted into V1Closer to the actual terminal voltage of the battery B to be formed itself, Vs closer to the circuit terminal voltage; by comparison of V1And Vs, when the battery voltage is abnormal, whether the battery performance is abnormal or the connection is abnormal can be accurately judged, and misjudgment is reduced.
The application also provides a battery formation device, the battery formation device includes:
a power source; and
the battery formation circuit of any preceding claim, connected to the power source.
In one embodiment, the power supply is a balanced charge and discharge machine.
The invention provides a battery formation circuit and a battery formation device, wherein the battery formation circuit comprises: the system comprises a plurality of batteries to be formed, a power supply and a controller, wherein the batteries to be formed are sequentially connected in series and are connected with the power supply to form a series circuit; the sampling module is connected with the batteries to be formed and is used for sampling the performance parameters and the working state of each battery to be formed; and the host computer is respectively connected with the power supply and the sampling module, the host computer is used for controlling the current signal output by the power supply according to the performance parameters, the working state and the instruction input by a user so as to charge or discharge a plurality of batteries to be formed, and the batteries to be formed are sequentially connected in series to form a loop with the power supply, so that the forming process of the batteries to be formed can be completed only by adopting two transmission lines, and the problems of high wire cost and high energy loss caused by more transmission lines in the traditional forming process are solved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A battery formation circuit connected to a power source, the battery formation circuit comprising:
the plurality of to-be-formed batteries are sequentially connected in series and are connected with the power supply to form a series circuit;
the sampling module is connected with the batteries to be formed and is used for sampling the performance parameters and the working state of each battery to be formed; and
the upper computer is respectively connected with the power supply and the sampling module and is used for acquiring the performance parameters and the working state, and controlling the current signal output by the power supply according to the performance parameters, the working state and an instruction input by a user so as to charge or discharge a plurality of batteries to be formed.
2. The battery formation circuit of claim 1, further comprising:
the battery to be formed is connected with the plurality of batteries to be formed in a one-to-one corresponding mode, the plurality of switch switching modules are connected with the plurality of batteries to be formed in a one-to-one corresponding mode respectively, each switch switching module comprises a first channel and a second channel, the first channels are connected with the corresponding batteries to be formed in series, and the second channels are connected with the corresponding batteries to be formed in parallel.
3. The battery formation circuit of claim 2, further comprising:
and the switch switching control module is connected with the switch switching modules and is used for switching and controlling the channels of the switch switching modules.
4. The battery formation circuit of claim 3, wherein the upper computer is further configured to output a corresponding switch switching instruction according to the performance parameters and the operating states of the plurality of batteries to be formed;
the switch switching control module is further configured to receive the switch switching instruction, and perform switching control on channels of the plurality of switch switching modules according to the switch switching instruction.
5. The battery formation circuit of claim 4, wherein the upper computer is further configured to output a corresponding switch switching instruction to control the switch switching control module to switch the corresponding channel of the switch switching module from the first channel to the second channel when the capacitance of the battery to be formed is greater than or equal to a preset threshold capacitance.
6. The battery formation circuit of claim 2, wherein the switch switching module comprises a relay, a first end of the relay is connected with a first end of the series circuit, a first contact of a second end of the relay is connected with a first end of the corresponding battery to be formed, and a second contact of the second end of the relay is connected with a second end of the corresponding battery to be formed.
7. The battery formation circuit of claim 2, wherein the power source is an equalizing charge-discharge machine.
8. The battery formation circuit of claim 1, wherein the performance parameters comprise: battery capacity, battery voltage, charging current, operating condition includes: battery temperature status, wiring status.
9. The battery formation circuit of claim 1, wherein each of the batteries to be formed is connected to the sampling module through a current sampling line, a first voltage sampling line, and a second voltage sampling line, wherein a positive electrode of the current sampling line, a positive electrode of the first voltage sampling line, and a positive electrode of the battery to be formed are connected in common, a negative electrode of the current sampling line, a negative electrode of the first voltage sampling line, and a negative electrode of the battery to be formed are connected in common, a positive electrode of the second voltage sampling line is connected to a positive connector, and a negative electrode of the second voltage sampling line is connected to a negative connector.
10. A battery formation apparatus, characterized in that the battery formation apparatus comprises:
a power source; and
the battery formation circuit of any of claims 1-9, connected to the power source.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910223396.9A CN111725577A (en) | 2019-03-22 | 2019-03-22 | Battery formation circuit and battery formation device |
| PCT/CN2019/092811 WO2020191931A1 (en) | 2019-03-22 | 2019-06-25 | Battery formation circuit and battery formation apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910223396.9A CN111725577A (en) | 2019-03-22 | 2019-03-22 | Battery formation circuit and battery formation device |
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| WO2020191931A1 (en) | 2020-10-01 |
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