CN115800456A - Intelligent protection control system for preventing reverse connection of charging and discharging of lithium ion battery module - Google Patents
Intelligent protection control system for preventing reverse connection of charging and discharging of lithium ion battery module Download PDFInfo
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- CN115800456A CN115800456A CN202211557035.6A CN202211557035A CN115800456A CN 115800456 A CN115800456 A CN 115800456A CN 202211557035 A CN202211557035 A CN 202211557035A CN 115800456 A CN115800456 A CN 115800456A
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- 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
Abstract
The invention provides an intelligent protection control system for preventing reverse connection of charging and discharging of a lithium ion battery module. The intelligent charging and discharging anti-reverse connection protection control system for the lithium ion battery module comprises a power supply end reverse connection control module, the lithium ion battery module and a load end reverse connection control module; the signal input end of the power supply end reverse connection control module is respectively connected with the positive and negative electrode ports of the power supply equipment; the signal acquisition end of the power supply end reverse connection control module is connected with the negative electrode end of the lithium ion battery module; the load end is reversely connected with the signal input end of the control module and is respectively connected with the positive and negative electrode ports of the load equipment; and the signal acquisition end of the load end is reversely connected with the control module and is connected with the negative end of the lithium ion battery module.
Description
Technical Field
The invention provides an anti-reverse connection intelligent protection control system for charging and discharging of a lithium ion battery module, and belongs to the technical field of lithium batteries.
Background
The lithium ion battery is a chargeable and dischargeable battery with limited charging and discharging times, and in the charging and discharging process of the existing lithium ion battery, if the lithium ion battery is reversely connected, a large amount of heat can be generated, and dangers such as combustion, explosion and the like can be easily generated. In addition, when the lithium ion battery is reversely connected to discharge, there is also a risk of ignition, explosion, and the like. Therefore, the conventional lithium ion battery needs a protection circuit to protect the lithium ion battery in the charging or discharging process so as to prevent accidents.
Disclosure of Invention
The invention provides a charging and discharging reverse connection prevention intelligent protection control system of a lithium ion battery module, which is used for solving the problems that the charging time of a lithium ion battery is longer and the charging efficiency is lower when the charging and discharging of the lithium ion battery are carried out simultaneously by the lithium ion battery reverse connection protection control system in the prior art:
a charging and discharging reverse connection prevention intelligent protection control system for a lithium ion battery module comprises a power end reverse connection control module, the lithium ion battery module and a load end reverse connection control module; the signal input end of the power supply end reverse connection control module is respectively connected with the positive and negative electrode ports of the power supply equipment; the signal acquisition end of the power supply end reverse connection control module is connected with the negative electrode end of the lithium ion battery module; the load end is reversely connected with the signal input end of the control module and is respectively connected with the positive and negative electrode ports of the load equipment; and the load end is reversely connected with the signal acquisition end of the control module and the negative electrode end of the lithium ion battery module.
Further, the power supply end reverse connection control module comprises a first switch circuit and a first reverse connection intelligent control module; the first switch circuit is arranged on a connecting circuit of the power supply equipment and the negative end of the lithium ion battery module; and the switch control signal output end of the first reverse connection intelligent control module is connected with the control signal input end of the first switch circuit.
Furthermore, the signal input end of the first reverse connection intelligent control module is respectively connected with the positive and negative electrode ports of the power supply equipment.
Further, the load end reverse connection control module comprises a second switch circuit and a second reverse connection intelligent control module; the second switch circuit is arranged on a connecting circuit of the load equipment and the negative end of the lithium ion battery module; and the switch control signal output end of the second reverse connection intelligent control module is connected with the control signal input end of the second switch circuit.
Furthermore, the signal input end of the second reverse connection intelligent control module is respectively connected with the positive and negative electrode ports of the load equipment.
Furthermore, the first reverse connection intelligent control module and the second reverse connection intelligent control module both adopt a control circuit module with a single chip microcomputer as a core.
Further, the reverse connection control method of the power supply end reverse connection control module comprises the following steps:
step 1, when power supply equipment is accessed, acquiring polarity attributes of two ends of the connected power supply equipment through a first reverse connection intelligent control module;
step 2, judging whether signal ports of the power supply equipment connected with the positive and negative input ends of the first reverse connection intelligent control module are corresponding positive and negative attributes according to the acquired polarity attributes of the two ends connected with the power supply equipment, and acquiring a judgment result;
and 3, if the judgment result shows that the signal ports of the power supply equipment connected with the positive and negative input ends of the first reverse connection intelligent control module are not corresponding to positive and negative attributes, the first reverse connection intelligent control module controls the first switch circuit to be disconnected, so that the charging circuit between the power supply equipment and the lithium ion battery module is in an open circuit state.
Further, the reverse connection control method of the load end reverse connection control module comprises the following steps:
step 1, when a load device is accessed, the polarity attributes of two ends connected with the load device are obtained through a second reverse connection intelligent control module;
step 2, judging whether the signal ports of the load equipment connected with the positive and negative input ends of the second reverse connection intelligent control module are corresponding positive and negative attributes according to the acquired polarity attributes of the two ends connected with the load equipment, and acquiring a judgment result;
and 3, if the judgment result shows that the signal ports of the load equipment connected with the positive and negative input ends of the second reverse connection intelligent control module are not the corresponding positive and negative attributes, the second reverse connection intelligent control module controls the second switch circuit to be disconnected, so that the discharge circuit between the load equipment and the lithium ion battery module is in an open circuit state.
Further, the lithium ion battery module comprises a lithium ion battery circuit, a charging control circuit module and a discharging control circuit module; the charging control signal end of the charging control circuit module is connected with the charging control signal input end of the lithium ion battery circuit; the discharging control signal end of the charging control circuit module is connected with the discharging control signal input end of the lithium ion battery circuit; the signal input end of the charging control circuit module is connected with the power supply signal output end of the power supply device; the signal input end of the discharge control circuit module is connected with the interface end of the load equipment; and the data transmission end of the discharge control circuit is connected with the data transmission end of the charge control circuit.
Further, the charge and discharge control method of the lithium ion battery module comprises the following steps:
step 1, charging a lithium ion battery through a charging control circuit according to a preset first charging power under the condition that the connection of a positive electrode and a negative electrode of a power supply device is correct; wherein, the first charging power is 92% of the charging rated power of the lithium ion battery;
step 2, monitoring whether a discharge circuit between the load equipment and the lithium ion battery module is in a path state or not in real time through a discharge control circuit, and when the discharge circuit between the load equipment and the lithium ion battery module is judged to be in the path state, acquiring rated charging power of the load equipment during charging and sending the rated charging power to a charge control circuit module; the rated charging power corresponds to the discharging power of the lithium ion battery when the lithium ion battery discharges the load equipment;
step 3, the charging control circuit module adjusts and sets the charging power and the discharging power of the lithium ion battery according to the specific numerical value of the rated charging power to obtain a second charging power and an adjusted discharging power, and sends the numerical value information corresponding to the adjusted discharging power to the discharging control circuit; the second charging power is a charging rated power of the lithium ion battery, and the adjusted discharging power is obtained through the following formula:
wherein P represents the adjusted discharge power; p is 1 Representing a first charging power; p e The rated charging power represents the rated charging power when the load equipment is charged; p is 2 Representing a second charging power;
and 4, the charging control circuit module controls the lithium ion battery to charge according to the second charging power, and meanwhile, the discharging control circuit controls the lithium ion battery to discharge the load according to the adjusted discharging power.
The invention has the beneficial effects that:
the embodiment of the invention provides an intelligent protection control system for preventing reverse connection of charge and discharge of a lithium ion battery module, which can perform reverse connection prevention detection in the charging process of the lithium ion battery and the discharging process of lithium ions on load equipment by respectively and correspondingly arranging a power end reverse connection control module and a load end reverse connection control module between power supply equipment and the lithium ion battery and between the lithium ion battery and the load equipment, thereby effectively preventing the damage probability of the lithium ion battery and the load equipment. Simultaneously, the setting of first charging power can carry out the mode of carrying out the next full charge under the condition that does not influence the charge efficiency that lithium ion battery charges alone and effectively improve lithium ion battery's life, can prevent simultaneously that the problem that the ageing of the anti-control module group of connecting of heavy current increase power end in the full charge process reduces life from taking place. On the other hand, the method for adjusting the second charging power and the discharging power can effectively improve the matching performance of the charging and discharging power of the lithium ion battery under the condition that the charging and the discharging are carried out simultaneously, improve the charging efficiency of the lithium ion battery under the condition that the charging efficiency of a load is not influenced and reduced, and prevent the problems that the charging efficiency of the lithium ion battery is reduced in the process that the charging and the discharging are carried out simultaneously due to overhigh discharging efficiency, and the performance of the lithium ion battery is reduced due to the fact that the lithium ion battery cannot reach a full-charge state for a long time.
Drawings
Fig. 1 is a system block diagram of a charging and discharging reverse connection prevention intelligent protection control system of a lithium ion battery module according to the invention;
FIG. 2 is a schematic structural diagram of a lithium ion battery module according to the present invention;
fig. 3 is a flowchart of a reverse connection control method of the power supply terminal reverse connection control module according to the present invention;
fig. 4 is a method for controlling charging and discharging of a lithium ion battery module according to the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it should be understood that they are presented herein only to illustrate and explain the present invention and not to limit the present invention.
The embodiment of the invention provides a charging and discharging reverse connection prevention intelligent protection control system of a lithium ion battery module, which comprises a power supply end reverse connection control module, the lithium ion battery module and a load end reverse connection control module, wherein as shown in figure 1, the charging and discharging reverse connection prevention intelligent protection control system of the lithium ion battery module comprises a power supply end reverse connection control module, a lithium ion battery module and a load end reverse connection control module; the signal input end of the power supply end reverse connection control module is respectively connected with the positive and negative electrode ports of the power supply equipment; the signal acquisition end of the power supply end reverse connection control module is connected with the negative electrode end of the lithium ion battery module; the load end is reversely connected with the signal input end of the control module and is respectively connected with the positive and negative electrode ports of the load equipment; and the signal acquisition end of the load end is reversely connected with the control module and is connected with the negative end of the lithium ion battery module.
The power supply end reverse connection control module comprises a first switch circuit and a first reverse connection intelligent control module; the first switch circuit is arranged on a connecting circuit of the power supply equipment and the negative electrode end of the lithium ion battery module; and the switch control signal output end of the first reverse connection intelligent control module is connected with the control signal input end of the first switch circuit. And the signal input end of the first reverse connection intelligent control module is respectively connected with the positive and negative electrode ports of the power supply equipment.
The load end reverse connection control module comprises a second switch circuit and a second reverse connection intelligent control module; the second switch circuit is arranged on a connecting line of the load equipment and the negative end of the lithium ion battery module; and the switch control signal output end of the second reverse connection intelligent control module is connected with the control signal input end of the second switch circuit. And the signal input end of the second reverse connection intelligent control module is respectively connected with the positive and negative electrode ports of the load equipment. And the first reverse connection intelligent control module and the second reverse connection intelligent control module both adopt control circuit modules with a single chip microcomputer as a core.
The reverse connection control method of the power supply end reverse connection control module comprises the following steps:
step 1, when power supply equipment is accessed, acquiring polarity attributes of two ends of the connected power supply equipment through a first reverse connection intelligent control module;
step 2, judging whether signal ports of the power supply equipment connected with the positive and negative input ends of the first reverse connection intelligent control module are corresponding positive and negative attributes according to the acquired polarity attributes of the two ends connected with the power supply equipment, and acquiring a judgment result;
and 3, if the judgment result shows that the signal ports of the power supply equipment connected with the positive and negative input ends of the first reverse connection intelligent control module are not corresponding to positive and negative attributes, the first reverse connection intelligent control module controls the first switch circuit to be disconnected, so that the charging circuit between the power supply equipment and the lithium ion battery module is in an open circuit state.
The reverse connection control method of the load end reverse connection control module comprises the following steps:
step 1, when a load device is accessed, the polarity attributes of two ends connected with the load device are obtained through a second reverse connection intelligent control module;
step 2, judging whether the signal ports of the load equipment connected with the positive and negative input ends of the second reverse connection intelligent control module are corresponding positive and negative attributes according to the acquired polarity attributes of the two ends connected with the load equipment, and acquiring a judgment result;
and 3, if the judgment result shows that the signal ports of the load equipment connected with the positive and negative input ends of the second reverse connection intelligent control module are not corresponding to the positive and negative attributes, the second reverse connection intelligent control module controls the second switch circuit to be disconnected, so that a discharge circuit between the load equipment and the lithium ion battery module is in an open circuit state.
The working principle and the effect of the technical scheme are as follows: the embodiment of the invention provides an intelligent protection control system for preventing reverse connection of charging and discharging of a lithium ion battery module, which can perform reverse connection prevention detection in the charging process of the lithium ion battery and the discharging process of lithium ions on load equipment by respectively and correspondingly arranging a power supply end reverse connection control module and a load end reverse connection control module between the power supply equipment and the lithium ion battery and between the lithium ion battery and the load equipment, so that the damage probability of the lithium ion battery and the load equipment is effectively prevented.
In one embodiment of the invention, the lithium ion battery module comprises a lithium ion battery circuit, a charging control circuit module and a discharging control circuit module; the charging control signal end of the charging control circuit module is connected with the charging control signal input end of the lithium ion battery circuit; the discharging control signal end of the charging control circuit module is connected with the discharging control signal input end of the lithium ion battery circuit; the signal input end of the charging control circuit module is connected with the power supply signal output end of the power supply device; the signal input end of the discharge control circuit module is connected with the interface end of the load equipment; and the data transmission end of the discharge control circuit is connected with the data transmission end of the charge control circuit.
The charge and discharge control method of the lithium ion battery module comprises the following steps:
step 1, charging a lithium ion battery through a charging control circuit according to a preset first charging power under the condition that the connection of a positive electrode and a negative electrode of a power supply device is correct; wherein, the first charging power is 92% of the charging rated power of the lithium ion battery;
step 2, monitoring whether a discharging circuit between the load equipment and the lithium ion battery module is in a path state or not in real time through a discharging control circuit, and collecting rated charging power when the load equipment is charged and sending the rated charging power to a charging control circuit module when the discharging circuit between the load equipment and the lithium ion battery module is judged to be in the path state; the rated charging power corresponds to the discharging power of the lithium ion battery when the lithium ion battery discharges the load equipment;
step 3, the charging control circuit module adjusts and sets the charging power and the discharging power of the lithium ion battery according to the specific numerical value of the rated charging power to obtain a second charging power and an adjusted discharging power, and sends the numerical value information corresponding to the adjusted discharging power to the discharging control circuit; the second charging power is the charging rated power of the lithium ion battery, and the adjusted discharging power is obtained through the following formula:
wherein P represents the adjusted discharge power; p 1 Representing a first charging power; p e Represents a rated charging power at which the load device is charged; p is 2 Representing a second charging power;
and 4, the charging control circuit module controls the lithium ion battery to charge according to the second charging power, and meanwhile, the discharging control circuit controls the lithium ion battery to discharge the load according to the adjusted discharging power.
The working principle and the effect of the technical scheme are as follows: the setting through first charging power can carry out the mode that the volume was charged to the next time under the charge efficiency's that does not influence lithium ion battery charging alone and effectively improve lithium ion battery's life, can prevent simultaneously that the problem that the ageing of the anti-control module group of connecting of heavy current increase power end in the full charge process reduces life from taking place. On the other hand, the method for adjusting the second charging power and the discharging power can effectively improve the matching performance of the charging and discharging power of the lithium ion battery under the condition that the charging and the discharging are carried out simultaneously, improve the charging efficiency of the lithium ion battery under the condition that the charging efficiency of a load is not influenced and reduced, and prevent the problems that the charging efficiency of the lithium ion battery is reduced in the process that the charging and the discharging are carried out simultaneously due to overhigh discharging efficiency, and the performance of the lithium ion battery is reduced due to the fact that the lithium ion battery cannot reach a full-charge state for a long time.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. The intelligent protection control system for preventing the reverse connection of the charge and the discharge of the lithium ion battery module is characterized by comprising a power supply end reverse connection control module, the lithium ion battery module and a load end reverse connection control module; the signal input ends of the power supply end reverse connection control module are respectively connected with positive and negative electrode ports of power supply equipment; the signal acquisition end of the power supply end reverse connection control module is connected with the negative electrode end of the lithium ion battery module; the load end is reversely connected with the signal input end of the control module and is respectively connected with the positive and negative electrode ports of the load equipment; and the load end is reversely connected with the signal acquisition end of the control module and the negative electrode end of the lithium ion battery module.
2. The lithium ion battery module charge-discharge reverse connection prevention intelligent protection control system according to claim 1, wherein the power supply end reverse connection control module comprises a first switch circuit and a first reverse connection intelligent control module; the first switch circuit is arranged on a connecting circuit of the power supply equipment and the negative electrode end of the lithium ion battery module; and the switch control signal output end of the first reverse connection intelligent control module is connected with the control signal input end of the first switch circuit.
3. The lithium ion battery module charge-discharge reverse connection prevention intelligent protection control system according to claim 2, wherein a signal input end of the first reverse connection intelligent control module is respectively connected with a positive electrode port and a negative electrode port of a power supply device.
4. The charging and discharging reverse connection prevention intelligent protection control system for the lithium ion battery module according to claim 1, wherein the load end reverse connection control module comprises a second switch circuit and a second reverse connection intelligent control module; the second switch circuit is arranged on a connecting circuit of the load equipment and the negative end of the lithium ion battery module; and the switch control signal output end of the second reverse connection intelligent control module is connected with the control signal input end of the second switch circuit.
5. The lithium ion battery module charge-discharge reverse connection prevention intelligent protection control system according to claim 2, wherein a signal input end of the second reverse connection intelligent control module is respectively connected with a positive electrode port and a negative electrode port of a load device.
6. The lithium ion battery module charge-discharge reverse connection prevention intelligent protection control system according to claim 2 or 4, characterized in that the first reverse connection intelligent control module and the second reverse connection intelligent control module both adopt control circuit modules with a single chip microcomputer as a core.
7. The intelligent charging and discharging reverse connection prevention protection control system for the lithium ion battery module according to claim 1, wherein the reverse connection control method for the power supply end reverse connection control module comprises the following steps:
step 1, when power supply equipment is accessed, acquiring polarity attributes of two ends of the connected power supply equipment through a first reverse connection intelligent control module;
step 2, judging whether signal ports of the power supply equipment connected with the positive and negative input ends of the first reverse connection intelligent control module are corresponding positive and negative attributes according to the acquired polarity attributes of the two ends connected with the power supply equipment, and acquiring a judgment result;
and 3, if the judgment result shows that the signal ports of the power supply equipment connected with the positive and negative input ends of the first reverse intelligent control module are not the corresponding positive and negative attributes, the first reverse intelligent control module controls the first switch circuit to be disconnected, so that the charging circuit between the power supply equipment and the lithium ion battery module is in an open circuit state.
8. The lithium ion battery module charging and discharging reverse connection prevention intelligent protection control system according to claim 1, wherein the reverse connection control method of the load end reverse connection control module comprises the following steps:
step 1, when a load device is accessed, the polarity attributes of two ends connected with the load device are obtained through a second reverse connection intelligent control module;
step 2, judging whether the signal ports of the load equipment connected with the positive and negative input ends of the second reverse connection intelligent control module are corresponding positive and negative attributes according to the acquired polarity attributes of the two ends connected with the load equipment, and acquiring a judgment result;
and 3, if the judgment result shows that the signal ports of the load equipment connected with the positive and negative input ends of the second reverse connection intelligent control module are not the corresponding positive and negative attributes, the second reverse connection intelligent control module controls the second switch circuit to be disconnected, so that the discharge circuit between the load equipment and the lithium ion battery module is in an open circuit state.
9. The charging and discharging reverse connection prevention intelligent protection control system of the lithium ion battery module according to claim 1, wherein the lithium ion battery module comprises a lithium ion battery circuit, a charging control circuit module and a discharging control circuit module; the charging control signal end of the charging control circuit module is connected with the charging control signal input end of the lithium ion battery circuit; the discharging control signal end of the charging control circuit module is connected with the discharging control signal input end of the lithium ion battery circuit; the signal input end of the charging control circuit module is connected with the power supply signal output end of the power supply device; the signal input end of the discharge control circuit module is connected with the interface end of the load equipment; and the data transmission end of the discharge control circuit is connected with the data transmission end of the charge control circuit.
10. The intelligent protection control system for preventing reverse connection of charging and discharging of the lithium ion battery module according to claim 9, wherein the charging and discharging control method of the lithium ion battery module comprises the following steps:
step 1, charging a lithium ion battery through a charging control circuit according to a preset first charging power under the condition that the connection of a positive electrode and a negative electrode of a power supply device is correct; wherein the first charging power is 92% of the charging rated power of the lithium ion battery;
step 2, monitoring whether a discharge circuit between the load equipment and the lithium ion battery module is in a path state or not in real time through a discharge control circuit, and when the discharge circuit between the load equipment and the lithium ion battery module is judged to be in the path state, acquiring rated charging power of the load equipment during charging and sending the rated charging power to a charge control circuit module; the rated charging power corresponds to the discharging power of the lithium ion battery when the lithium ion battery discharges the load equipment;
step 3, the charging control circuit module adjusts and sets the charging power and the discharging power of the lithium ion battery according to the specific numerical value of the rated charging power to obtain a second charging power and an adjusted discharging power, and sends the numerical value information corresponding to the adjusted discharging power to the discharging control circuit; the second charging power is a charging rated power of the lithium ion battery, and the adjusted discharging power is obtained through the following formula:
wherein P represents the adjusted discharge power; p is 1 Representing a first charging power; p is e The rated charging power represents the rated charging power when the load equipment is charged; p 2 Representing a second charging power;
and 4, the charging control circuit module controls the lithium ion battery to charge according to the second charging power, and meanwhile, the discharging control circuit controls the lithium ion battery to discharge the load according to the adjusted discharging power.
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