CN111048842A - Lithium ion battery treatment device and method - Google Patents
Lithium ion battery treatment device and method Download PDFInfo
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- CN111048842A CN111048842A CN201911056508.2A CN201911056508A CN111048842A CN 111048842 A CN111048842 A CN 111048842A CN 201911056508 A CN201911056508 A CN 201911056508A CN 111048842 A CN111048842 A CN 111048842A
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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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
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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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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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
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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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- 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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The utility model provides a lithium ion battery processing apparatus, includes charge and discharge machine and battery, charge and discharge machine's positive negative pole can respectively with the positive negative grade of battery is connected, the battery is placed in magnetic field, still includes battery and places part, magnetic field generation part, reversing mechanism, the battery is placed the part and is used for placing the battery, magnetic field generation part with reversing mechanism connects, reversing mechanism can drive magnetic field generation part motion for the magnetic line of force direction in magnetic field and battery position take place relative change, magnetic field generation part is the electro-magnet, the electro-magnet is U type magnet, the battery is placed in the middle part space of U type. During the formation and activation of a new lithium ion battery and the repair process of an old lithium ion battery, the action of a magnetic field is increased, the movement direction of lithium ions is changed, and the migration channel of the lithium ions is increased, so that the lithium ions are more easily migrated between a positive electrode and a negative electrode, and the reversible capacity of the lithium ion battery is improved.
Description
Technical Field
The invention belongs to the technical field of lithium battery production and repair, and relates to a lithium ion battery processing device and method.
Background
The actual capacity of the lithium ion battery has a certain difference with the theoretical capacity of the active material of the lithium ion battery, and the lithium ion battery scientific research institution, the active material production enterprises and the lithium battery production enterprises try to reduce the difference without any loss so as to improve the utilization rate of the active material and finally improve the energy density of the lithium ion battery. However, at present, such efforts have met with bottlenecks.
The exertion of the capacity of the active material of the lithium ion battery is closely related to the first formation process of the lithium ion battery, and the first formation efficiency is improved mainly by controlling factors such as formation current, voltage, external pressure, temperature and the like so as to improve the reversible capacity of the lithium ion battery at present. However, for some inactive lithium ions in the active material (which can only move within a small range in the positive electrode or the negative electrode, cannot move between the positive electrode and the negative electrode, i.e. do not participate in the actual electrochemical reaction process of the battery, and do not contribute to the capacity), the effects of these technical means are very small, and it is urgently needed to activate the inactive lithium ions by other new technical means for the battery to use, so that the capacity of the battery approaches the theoretical value of the active material as much as possible.
In addition, after a lithium ion battery is used for a certain period of time, the capacity gradually decreases. The capacity fade is mainly related to factors such as structural change of an active material, decomposition and reconstruction of a Solid Electrolyte Interface (SEI), gradual decomposition of an electrolyte solution along with an electrochemical reaction, and the like. These factors result in a reduced number of active lithium ions, which ultimately manifests as a battery capacity fade.
The conventional means only influences the migration rate and the migration distance of lithium ions, and the activation effect is limited; in the process of formation of a new battery or repair of an old battery, charging and discharging are controlled, and the migration direction of lithium ions can be changed only in the dimension of an electric field, namely the lithium ions migrate from the positive electrode to the negative electrode during charging and migrate from the negative electrode to the positive electrode during discharging. For the newly manufactured lithium ion battery, the lithium ion battery is activated and the reversible capacity of the lithium ion battery is improved by adjusting factors such as current, voltage, pressure, temperature and the like formed for the first time.
For the repair of the old lithium ion battery, the technical means with batch operability at present is to perform the formation process of the lithium ion battery again, namely to adjust factors such as current, voltage pressure and temperature.
If some technical means can activate some inactive lithium ions, some capacity can be recovered to achieve the purpose of repairing the lithium ion battery.
Disclosure of Invention
In order to increase a migration channel of lithium ions to make the lithium ions more easily migrate between a positive electrode and a negative electrode and activate some inactive lithium ions to increase the migration number of the lithium ions between the positive electrode and the negative electrode in the formation of a new battery and the repair process of an old battery, the invention provides a lithium ion battery processing device and a method.
A lithium ion battery processing device comprises a charge-discharge machine and a battery, wherein the positive electrode and the negative electrode of the charge-discharge machine are respectively connected with the positive electrode and the negative electrode of the battery, and the battery is placed in a magnetic field.
The magnetic field generator comprises a battery placing part, a magnetic field generating part and a reversing mechanism, wherein the battery placing part is used for placing a battery, the magnetic field generating part is connected with the reversing mechanism, and the reversing mechanism can drive the magnetic field generating part to move, so that the direction of magnetic lines of force of a magnetic field and the position of the battery are changed relatively.
Furthermore, the magnetic field generating component is an electromagnet, the electromagnet is a U-shaped magnet, and the battery is placed in the middle space of the U shape.
Furthermore, the coil of the electromagnet is an alternating current coil or a direct current coil and is arranged at the bottom of the U shape.
Furthermore, the reversing mechanism is a rotating mechanism, the rotating mechanism comprises a support frame and a bottom plate, one end of the support frame is fixedly connected with the bottom plate, the other end of the support frame is used for placing a battery, an inner ring fixing flange is arranged in the middle of the support frame, a rotary support used for enabling the electromagnet and the battery to rotate is arranged on the inner ring fixing flange, and the rotary support is fixedly connected with the electromagnet.
Furthermore, a battery tray is arranged at one end of the support frame, which is used for placing a battery, and a base fixing flange is arranged at the joint of the support frame and the bottom plate.
Further, the magnetic field generating component is a permanent magnet, the reversing mechanism comprises rotating mechanisms respectively arranged on two sides of the battery placing component, each rotating mechanism comprises a positioning seat and a rotating shaft movably connected with the upper portion of the positioning seat, a mounting plate is arranged on each rotating shaft, and the mounting plates are fixedly connected with the permanent magnet.
A processing method of a lithium ion battery comprises the following steps:
a. respectively communicating the positive electrode and the negative electrode of the battery with the positive electrode and the negative electrode of a charge-discharge machine, adjusting charge-discharge parameters, and performing a formation process of the battery;
b. applying magnetic field force action on lithium ions moving in the battery at two sides of the battery;
c. canceling the action of magnetic field force, keeping the battery and the charge and discharge machine connected, adjusting parameters, completing a complete charge and discharge process, and ending;
step a and step b are performed simultaneously.
Furthermore, a step b1 is added between the step b and the step c,
b 1: the electromagnet is rotated to change the direction of the magnetic field and the stress direction of the mobile lithium ions, so that a complete charging and discharging process is completed.
Further, the application of the magnetic field force is accomplished by a permanent magnet or an electromagnet that moves rotationally around the battery.
Further, the method is used for lithium ion battery formation or repair.
The lithium ion battery treatment device and the method have the advantages that:
1. during the formation and activation of a new lithium ion battery and the repair process of an old lithium ion battery, the action of a magnetic field is increased, the movement direction of lithium ions is changed, and the migration channel of the lithium ions is increased, so that the lithium ions are more easily migrated between a positive electrode and a negative electrode, and the reversible capacity of the lithium ion battery is improved;
2. activating some inactive lithium ions by the action of magnetic field force to increase the migration number of the lithium ions between the positive electrode and the negative electrode, and further improving the reversible capacity of the lithium ion battery;
3. the magnetic field generating component of the device is an electromagnet or a permanent magnet, wherein a coil of the electromagnet can be a direct current coil or an alternating current coil; the magnetic field generating component of the device can rotate around the battery, the rotating angle is self-determined, and the acting direction of the magnetic field is changed at any angle, so that the moving direction of lithium ions is changed, and the migration channel of the lithium ions is increased as much as possible;
4. the device can be used for the formation process of a new battery and the repair process of an old battery;
5. the device has the advantages that the power consumption is low when the electromagnet is used for generating the magnetic field in the using process, the power consumption is not high when the permanent magnet is used for generating the magnetic field, the service life of the lithium battery is prolonged, and the resources are saved.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment 1 of a lithium ion battery processing apparatus;
FIG. 2 is a schematic structural view of a rotating mechanism in embodiment 1;
fig. 3 is a schematic structural diagram of the lithium ion battery processing apparatus in example 2.
The device comprises a base plate 1, a battery tray 2, a battery 3, an electromagnet 4, a charging and discharging machine 5, a coil 6, an inner ring fixing flange 7, a rotary support 8, a rotating mechanism 9, a base fixing flange 10, a support frame 11, a first binding post 12, a second binding post 13, a reversing mechanism 14, a battery placing part 15, a magnetic field generating part 16, a rotating mechanism 17, a positioning seat 18, a rotating shaft 19, a mounting plate 20 and a permanent magnet 21.
Detailed Description
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 obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Example 1:
as shown in fig. 1 and 2, a lithium ion battery processing apparatus includes a charge and discharge machine and a battery, wherein positive and negative electrodes of the charge and discharge machine are respectively connected to positive and negative electrodes of the battery, and when the battery needs to be formed or repaired, the charge and discharge machine is connected to the battery, otherwise, the battery is disconnected and placed in a magnetic field. The device also comprises a battery placing part, a magnetic field generating part and a reversing mechanism, wherein the battery placing part is used for placing the battery, the magnetic field generating part is connected with the reversing mechanism, and the reversing mechanism can drive the magnetic field generating part to move so that the direction of the magnetic force line of the magnetic field and the position of the battery are changed relatively.
The magnetic field generating component is an electromagnet, the electromagnet is a U-shaped magnet, the battery is placed in the U-shaped inner space, and a coil of the electromagnet is an alternating current coil or a direct current coil and is arranged at the bottom of the U-shaped magnet. In this embodiment, the coil is a dc coil, the first terminal and the second terminal at two ends of the dc coil are electrically connected to the positive pole and the negative pole of the dc power supply, respectively, and the reversing mechanism is a rotating mechanism that rotates the electromagnet around the battery.
As shown in fig. 1, the rotating mechanism includes a support frame and a bottom plate, one end of the support frame is fixedly connected to the bottom plate, the other end of the support frame is used for placing a battery, an inner ring fixing flange is installed in the middle of the support frame, the support frame and the inner ring fixing flange can be welded into a whole and can also be fixedly connected through a fastening screw, a rotary support for enabling an electromagnet and the battery to rotate is installed on the inner ring fixing flange, the rotary support is fixedly connected to the electromagnet, the connection mode can be fastened through the screw, the electromagnet can rotate around the support frame, further, the action direction of the magnetic field force on the lithium ions can be changed in multiple dimensions, the migration direction and the migration path of the lithium ions in the charging and discharging process are changed, the lithium ions can migrate on the surface of the pole piece and inside the pole piece to the maximum extent, the migration channel of the lithium ions is increased, and the migration number of the And then becomes active and shuttles between the positive and negative electrodes), the device can be applied to the lithium battery formation process to improve the battery capacity. The device can also be applied to the repair of the old lithium ion battery, and the reversible capacity of the old lithium ion battery is improved.
In the embodiment, the rotary support is a rolling bearing, so that the rotary support is small in rotation resistance and convenient to use.
The battery tray is arranged at one end, used for placing batteries, of the support frame, the base fixing flange is arranged at the joint of the support frame and the bottom plate, the battery tray can adapt to batteries of different specifications or different quantities to be placed, and the support frame is connected with the bottom plate more firmly through the base fixing flange.
The method for forming or repairing the lithium ion battery by the device comprises the following specific steps:
a. respectively connecting the positive electrode and the negative electrode of the battery with the positive electrode and the negative electrode of a charge and discharge machine, adjusting charge and discharge parameters, wherein the parameters comprise current and voltage, and carrying out a formation process of the battery;
b. applying magnetic field force action on lithium ions moving in the battery at two sides of the battery;
c. canceling the action of magnetic field force, keeping the battery and the charge and discharge machine connected, adjusting parameters, completing a complete charge and discharge process, and ending; step a and step b are performed simultaneously.
In another embodiment, a step b1 is added between the step b and the step c,
b 1: the electromagnet is rotated to change the direction of the magnetic field and the stress direction of the mobile lithium ions, so that a complete charging and discharging process is completed. The application of the magnetic field force is completed by an electromagnet which rotates around the battery.
According to the device and the method, on one hand, the movement direction of the lithium ions is changed under the action of the magnetic field force, and the migration channel of the lithium ions is increased, so that the lithium ions are easier to migrate between the positive electrode and the negative electrode; on the other hand, some inactive lithium ions are activated by the action of the magnetic field force to increase the number of lithium ions transferred between the positive and negative electrodes. Both of the above aspects improve the reversible capacity of a lithium ion battery. The device and the method can be applied to formation of a new battery or repair of an old battery.
In another embodiment, the coil is a direct current coil, and when the direction of the magnetic field needs to be changed, the direct current coil can be realized only by reversely connecting the first binding post and the second binding post with the positive pole and the negative pole of the direct current power supply respectively. Similarly, the coil can also be an alternating current coil which is electrically connected with an alternating current power supply, and the changing of the frequency of the alternating current power supply can change the changing frequency of the direction of the magnetic field.
Example 2:
a lithium ion battery processing device comprises a charge-discharge machine and a battery, wherein the positive electrode and the negative electrode of the charge-discharge machine are respectively connected with the positive electrode and the negative electrode of the battery, when the battery needs to be formed or repaired, the charge-discharge machine is connected with the battery and is disconnected when the battery does not need to be formed or repaired, and the battery is placed in a magnetic field. The device also comprises a battery placing part, a magnetic field generating part and a reversing mechanism, wherein the battery placing part is used for placing the battery, the magnetic field generating part is connected with the reversing mechanism, and the reversing mechanism can drive the magnetic field generating part to move so that the direction of the magnetic force line of the magnetic field and the position of the battery are changed relatively.
The magnetic field generating component is a permanent magnet, in the embodiment, the permanent magnet is a U-shaped magnet, the battery is placed in the U-shaped inner space, and in the other embodiment, the permanent magnet is a bar magnet. The reversing mechanism is a rotating mechanism which enables the electromagnet to rotate around the battery.
The rotating mechanism comprises a support frame and a bottom plate, one end of the support frame is fixedly connected with the bottom plate, the other end of the support frame is used for placing a battery, an inner ring fixing flange is arranged in the middle of the support frame, the support frame and the inner ring fixing flange can be welded into a whole and can also be fixedly connected through a fastening screw, a rotary support used for enabling an electromagnet and the battery to rotate is arranged on the inner ring fixing flange, the rotary support is fixedly connected with the electromagnet, the connection mode can be fastened through the screw, the electromagnet can rotate around the support frame, further, the action direction of the magnetic field force on lithium ions can be changed in multiple dimensions, the migration direction and the path of the lithium ions in the charging and discharging process are changed, the lithium ions can migrate on the surface of a pole piece and in the inner part of the pole piece to the maximum extent, the migration channel of the lithium ions is increased, and the migration quantity of the lithium, becoming active and shuttling between positive and negative electrodes), the device can be applied to the formation process of the lithium battery so as to improve the battery capacity. The device can also be applied to the repair of the old lithium ion battery, and the reversible capacity of the old lithium ion battery is improved.
In the embodiment, the rotary support is a rolling bearing, so that the rotary support is small in rotation resistance and convenient to use.
The magnetic field direction of the permanent magnet is changed in a manual mode, the migration direction and the path of lithium ions in the charging and discharging process are changed, the lithium ions migrate on the surface of the pole piece and inside the pole piece to the maximum extent, and the reversible capacity of the lithium ion battery is increased.
Example 3:
as shown in fig. 3, a lithium ion battery processing apparatus includes a charging and discharging machine and a battery, the charging and discharging machine is connected with the battery, the battery is placed in a magnetic field, the apparatus further includes a battery placing part, a magnetic field generating part, and a reversing mechanism, the battery placing part is used for placing the battery, the magnetic field generating part is connected with the reversing mechanism, the reversing mechanism can drive the magnetic field generating part to move, so that the direction of the magnetic force line of the magnetic field and the position of the battery change relatively, the magnetic field generating part is a permanent magnet, the reversing mechanism includes rotating mechanisms symmetrically arranged on two sides of the battery placing part, the rotating mechanisms include a positioning seat and a rotating shaft movably connected with the upper part of the positioning seat, a rotating shaft hole (not shown in the figure) rotating in cooperation with the rotating shaft is arranged on the positioning seat, a mounting, the connection mode is welding, and in another embodiment, the connection mode is integrated, and the mounting plate is fixedly connected with the permanent magnet. The mounting panel is connected with permanent magnet fixed mode accessible fastening screw, and the permanent magnet is bar magnet, places the rotary mechanism of part both sides through rotating the battery, changes the magnetic line of force direction, and then changes lithium ion's direction of motion, activates some inactive lithium ions to increase the migration quantity of lithium ion between positive and negative pole, further improve the reversible capacity of lithium ion's battery, in this embodiment, the mode of rotating rotary mechanism is manual. In another embodiment, the direction of the magnetic field of the permanent magnet is changed in an automatic rotation mode, the driving motor is arranged on the rotating shaft and connected with the controller, the controller is electrically connected with the power supply, the controller controls the driving motor to rotate forwards and backwards for 180 degrees, the direction of the magnetic force line is changed, and the controller can periodically repeat the forward rotation and the backward rotation.
Example 4:
a lithium ion battery processing device comprises a charge-discharge machine and batteries, wherein the positive electrode and the negative electrode of the charge-discharge machine are respectively connected with the positive electrode and the negative electrode of the batteries, the batteries are placed in a magnetic field, the magnetic field is generated by two permanent magnets which are respectively positioned on two parallel sides of the batteries, the permanent magnets are bar magnets, and the permanent magnets are U-shaped magnets in another embodiment.
The direction of the magnetic force line is unchanged, the rotating mechanisms are arranged on the battery and the charging and discharging machine, the battery and the charging and discharging machine are rotated in the process of forming or repairing the battery, the positions of the magnetic force line and the battery are changed, and some inactive lithium ions are activated under the action of the magnetic force, so that the migration number of the lithium ions between the positive electrode and the negative electrode is increased.
Claims (10)
1. A lithium ion battery processing device comprises a charge-discharge machine and a battery, wherein the positive electrode and the negative electrode of the charge-discharge machine can be respectively connected with the positive electrode and the negative electrode of the battery, and the lithium ion battery processing device is characterized in that the battery is placed in a magnetic field.
2. The lithium ion battery processing apparatus of claim 1, wherein: the magnetic field generator comprises a battery placing part, a magnetic field generating part and a reversing mechanism, wherein the battery placing part is used for placing a battery, the magnetic field generating part is connected with the reversing mechanism, and the reversing mechanism can drive the magnetic field generating part to move so that the direction of magnetic lines of force of a magnetic field and the position of the battery change relatively.
3. The lithium ion battery processing apparatus of claim 2, wherein: the magnetic field generating component is an electromagnet which is a U-shaped magnet, and the battery is placed in the middle space of the U shape.
4. The lithium ion battery processing apparatus of claim 3, wherein: and the coil of the electromagnet is an alternating current coil or a direct current coil and is arranged at the bottom of the U shape.
5. The lithium ion battery processing apparatus of claim 2, wherein: the reversing mechanism is a rotating mechanism, the rotating mechanism comprises a support frame and a bottom plate, one end of the support frame is fixedly connected with the bottom plate, the other end of the support frame is used for placing a battery, an inner ring fixing flange is arranged in the middle of the support frame, a rotary support used for enabling the electromagnet and the battery to generate rotary motion is arranged on the inner ring fixing flange, and the rotary support is fixedly connected with the electromagnet.
6. The lithium ion battery processing apparatus of claim 5, wherein: the battery tray is arranged at one end, used for placing a battery, of the support frame, and a base fixing flange is arranged at the joint of the support frame and the bottom plate.
7. The lithium ion battery processing apparatus of claim 2, wherein: the magnetic field generating component is a permanent magnet, the reversing mechanism comprises rotating mechanisms respectively arranged on two sides of the battery placing component, each rotating mechanism comprises a positioning seat and a rotating shaft movably connected with the upper portion of the positioning seat, a mounting plate is arranged on each rotating shaft, and the mounting plates are fixedly connected with the permanent magnet.
8. A lithium ion battery processing method is characterized in that: the treatment method comprises the following steps of,
a. respectively communicating the positive electrode and the negative electrode of the battery with the positive electrode and the negative electrode of a charge-discharge machine, adjusting charge-discharge parameters, and performing a formation process of the battery;
b. applying magnetic field force action on lithium ions moving in the battery at two sides of the battery;
c. canceling the action of magnetic field force, keeping the battery and the charge and discharge machine connected, adjusting parameters, completing a complete charge and discharge process, and ending;
step a and step b are performed simultaneously.
9. The lithium ion battery processing method according to claim 8, characterized in that: b1 is added between the b step and the c step,
b 1: the electromagnet is rotated to change the direction of the magnetic field and the stress direction of the mobile lithium ions, so that a complete charging and discharging process is completed.
10. The lithium ion battery processing method according to claim 8 or 9, characterized in that: the magnetic field force is applied through a permanent magnet or an electromagnet, and the permanent magnet or the electromagnet rotates around the battery.
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| CN113097585A (en) * | 2021-04-13 | 2021-07-09 | 上海电机学院 | Lithium battery charging and discharging method |
| CN114256525A (en) * | 2021-12-03 | 2022-03-29 | 深圳市波斯曼技术有限公司 | Sodium ion energy storage battery system applied to rail transit |
| CN116598622A (en) * | 2023-05-29 | 2023-08-15 | 珠海全迪新能源科技有限公司 | Formation method for improving capacity of lithium battery |
| GB2617438A (en) * | 2023-01-27 | 2023-10-11 | Gaussion Ltd | Magnetic flux generator |
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