Intelligent charging and discharging optimization method

Abstract

The invention belongs to the technical field of battery charge and discharge control, and particularly relates to an intelligent charge and discharge optimization method, which specifically comprises the following steps: S1, monitoring the existing electric quantity of a battery in real time: establishing connection between a battery electric quantity detection module and the battery, attaching the battery electric quantity detection module to the battery electric quantity detection module, the battery electric quantity detection module is provided with a wireless transmission module, and the battery electric quantity detection module detects the residual electric quantity of the battery and transmits the residual electric quantity to the PLC in an electric signal mode through the wireless transmission module; s2, judging whether the battery meets discharge or needs to be charged or not based on a monitoring result; and S3, controlling the battery to realize charging or discharging. The battery capacity detection module monitors the remaining capacity of the battery in real time, and whether the battery needs to be charged or not, how to charge and whether the requirement of discharging to provide electric energy or not can be obtained based on detection of the remaining capacity of the battery. And the state of the battery can be accurately judged through an intelligent monitoring and judging mode of the PLC.

Description

Technical Field

[0001] The present invention relates to the technical field of battery charge and discharge control, and in particular to an intelligent charge and discharge optimization method. Background Art

[0002] Power batteries are the power source for tools, mostly referring to batteries that power electric cars, electric trains, electric bicycles, and golf carts. Power batteries are the core components of new energy vehicles and an important direction for future energy transformation.

[0003] It is mainly different from the starting battery used to start the car engine. Most of them use valve-sealed lead-acid batteries, open-type tubular lead-acid batteries and lithium iron phosphate batteries.

[0004] The power battery needs to be charged and discharged frequently during use. Discharging at low power will damage the power battery. When charging, if there is a lot of remaining power, fast charging will cause certain damage to the power battery. Summary of the invention

[0005] The purpose of the present invention is to provide an intelligent charging and discharging optimization method to solve the problem proposed in the above background technology that the power battery needs to be charged and discharged frequently during use, the discharge of low power causes damage to the power battery, and when charging, when there is a large amount of remaining power, fast charging will still cause certain damage to the power battery.

[0006] To achieve the above object, the present invention provides the following technical solutions: an intelligent charging and discharging optimization method, the intelligent charging and discharging optimization method is based on the following system composition; A battery power detection module, wherein the battery power detection module establishes a connection with the battery to be detected, and the battery power detection module monitors the battery power; A PLC controller, wherein the signal output end of the battery power detection module is connected to the PLC controller, and the PLC controller determines whether the battery meets the charging or discharging requirements based on the battery power, and charges or discharges the battery through the charging and discharging end through the PLC controller; The specific method of the intelligent charging and discharging optimization method is as follows: S1: Real-time monitoring of the current battery power: a battery power detection module is connected to the battery, the battery power detection module is attached to the battery power detection module, and the battery power detection module has a wireless transmission module. The battery power detection module detects the remaining power of the battery and transmits it to the PLC controller in the form of an electrical signal through the wireless transmission module; S2: Determine whether the battery is ready for discharge or needs to be charged based on the monitoring results: There are two situations: When the PLC controller receives a control command from the external control terminal that the battery needs to be charged, the PLC controller determines whether the battery needs to be charged based on the remaining power of the battery; When the PLC controller receives a control command from an external control terminal to discharge the battery, the PLC controller determines whether the remaining battery power meets the discharge requirement based on the remaining battery power; S3: Control the battery to charge or discharge: When the battery needs to be charged, the PLC controller controls the charging circuit, and the charging circuit charges the battery until the battery is charged to the target power requirement; When the remaining battery power meets the discharge requirements, the PLC controller controls the discharge circuit, and the battery provides power to external devices through the discharge circuit.

[0007] Preferably, the signal output end of the PLC controller is connected to the charging and discharging end and the relay switch, and the relay switch is connected to the charging and discharging end. Preferably, the charging and discharging end includes a mains connection terminal, an adjustable charging transformer, a battery connection terminal and a discharge connection terminal, the mains connection terminal is connected to the adjustable charging transformer, the adjustable charging transformer is connected to the battery connection terminal, the battery connection terminal is connected to the battery and a relay switch, and the relay switch is connected to the discharge connection terminal. Preferably, the AC power terminal, the adjustable charging transformer, and the battery connection terminal form a charging circuit, and the battery connection terminal, the relay switch, and the discharge terminal form a discharge circuit. When charging is required, the charging circuit works and the discharge circuit is in a stopped state; when discharging is required, the discharge circuit works and the charging circuit is in a stopped state. Preferably, the adjustable charging transformer is an electrically controlled transformer, and the electrically controlled transformer comprises a transformer body and an electric strip coil turns mechanism.

[0008] Preferably, the electric strip coil turns mechanism includes an electric telescopic mechanism and a sliding contact guide rod connected to the telescopic end of the electric telescopic mechanism, and the sliding contact guide rod moves on the transformer body to change the effective coil turns of the transformer body.

[0009] Preferably, when the battery is charging, when the remaining battery power is less than 85%, the power supply is carried out at the maximum power, and when the remaining battery power exceeds 85%, the power supply is charged at 25% of the maximum power; when the battery is discharging, when the remaining battery power is less than 15%, the PLC controller outputs an alarm message suggesting to stop discharging.

[0010] Preferably, when the battery is charging, when the remaining battery power reaches 100%, a relay switch is provided to cut off the charging circuit and stop charging.

[0011] Compared with the prior art, the present invention has the following beneficial effects: A battery power detection module is set up, based on which the remaining battery power is monitored in real time. Based on the detection of the remaining battery power, it can be determined whether the battery needs to be charged and how to charge it, and whether the requirement of discharging to provide electrical energy is met.

[0012] The battery status can be accurately judged through the intelligent monitoring and judgment of the PLC controller. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a system logic block diagram of the present invention; Figure 2 It is the system logic block diagram of the charging and discharging end; Figure 3 The figure is a flow chart of the optimization method of the present invention. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0015] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0016] Embodiment 1: See also Figure 1-3 ,The present invention provides a technical solution: an intelligent charging and discharging optimization method, the intelligent charging and discharging optimization method is based on the following system composition; A battery power detection module, wherein the battery power detection module establishes a connection with the battery to be detected, and the battery power detection module monitors the battery power; A PLC controller, wherein the signal output end of the battery power detection module is connected to the PLC controller, and the PLC controller determines whether the battery meets the charging or discharging requirements based on the battery power, and charges or discharges the battery through the charging and discharging end through the PLC controller; The specific method of the intelligent charging and discharging optimization method is as follows: S1: Real-time monitoring of the current battery power: a battery power detection module is connected to the battery, the battery power detection module is attached to the battery power detection module, and the battery power detection module has a wireless transmission module. The battery power detection module detects the remaining power of the battery and transmits it to the PLC controller in the form of an electrical signal through the wireless transmission module; S2: Determine whether the battery is ready for discharge or needs to be charged based on the monitoring results: There are two situations: When the PLC controller receives a control command from the external control terminal that the battery needs to be charged, the PLC controller determines whether the battery needs to be charged based on the remaining power of the battery; When the PLC controller receives a control command from an external control terminal to discharge the battery, the PLC controller determines whether the remaining battery power meets the discharge requirement based on the remaining battery power; S3: Control the battery to charge or discharge: When the battery needs to be charged, the PLC controller controls the charging circuit, and the charging circuit charges the battery until the battery is charged to the target power requirement; When the remaining battery power meets the discharge requirements, the PLC controller controls the discharge circuit, and the battery provides power to external devices through the discharge circuit.

[0017] Analysis of the above content: Taking a battery as an example, the battery has its own MSD system, and the battery power detection module is integrated in the MSD system. The battery remaining power is monitored by the battery power detection module, and the monitored battery remaining power is fed back to the PLC controller based on the MSD system.

[0018] The main function of the MSD system: In order to protect the safety of technicians who repair electric vehicles under high-voltage environments or respond to sudden events, the high-voltage circuit connection can be quickly disconnected to make maintenance and other work in a safer state, such as external short-circuit protection, and the high voltage needs to be disconnected during maintenance.

[0019] The basic principle of the MSD battery system: MSD is designed in the main circuit of the Pack, with a built-in high-voltage fuse and high-voltage interlock function. The fuse cuts off the high-voltage circuit in the event of an external short circuit; when the high voltage needs to be disconnected manually, the high-voltage interlock is disconnected first, and then the high-voltage circuit is disconnected. The design requirements of MSD should also include functional requirements such as the operating temperature range, load disconnection capability, chemical corrosion resistance, and mechanical strength reliability.

[0020] Embodiment 2: See also Figure 1-3, the present invention provides a technical solution based on the first embodiment: the signal output end of the PLC controller is connected to the charging and discharging end and the relay switch, and the relay switch is connected to the charging and discharging end. The charging and discharging end includes a mains connection terminal, an adjustable charging transformer, a battery connection terminal and a discharge connection terminal. The mains connection terminal is connected to the adjustable charging transformer, the adjustable charging transformer is connected to the battery connection terminal, the battery connection terminal is connected to the battery and the relay switch, and the relay switch is connected to the discharge connection terminal. The mains connection terminal, the adjustable charging transformer and the battery connection terminal form a charging circuit, and the battery connection terminal, the relay switch and the discharge connection terminal form a discharge circuit. When charging is required, the charging circuit works and the discharge circuit is in a stopped state; when discharging is required, the discharge circuit works and the charging circuit is in a stopped state.

[0021] Analysis of the above content: When the PLC controller receives a control instruction that requires charging, the PLC controller determines whether charging is required based on the remaining battery power obtained through monitoring. When charging is required, when the remaining battery power is less than 85%, the power supply is at the maximum power. When the remaining battery power exceeds 85%, the power supply is charged at 25% of the maximum power. When the battery is discharging, when the remaining battery power is less than 15%, the PLC controller outputs an alarm message suggesting that discharging be stopped. When the battery is charging, when the remaining battery power is 100%, a relay switch is provided to cut off the charging circuit and stop charging.

[0022] Embodiment three: See also Figure 1-3 The present invention provides a technical solution based on the second embodiment: the adjustable charging transformer is an electrically controlled transformer, and the electrically controlled transformer includes a transformer body and an electric strip coil turns mechanism. The electric strip coil turns mechanism includes an electric telescopic mechanism and a sliding contact guide rod connected to the telescopic end of the electric telescopic mechanism, and the sliding contact guide rod moves on the transformer body to change the effective coil turns of the transformer body.

[0023] Analysis of the above content: The electric control transformer here is similar to a sliding rheostat, and the sliding contact guide rod is slidably connected to the secondary coil of the transformer body. The primary coil of the transformer body is connected to the AC power, so that one end of the primary coil of the transformer body is connected to one pole of the battery connection end, and the other pole of the battery connection end is connected to the sliding contact guide rod. The sliding contact guide rod slides on the secondary coil, which can change the effective number of turns of the secondary coil, and the sliding contact guide rod is driven by an electric telescopic mechanism, which can be an electric telescopic rod or a linear motor.

[0024] A battery power detection module is set up, based on which the remaining battery power is monitored in real time. Based on the detection of the remaining battery power, it can be determined whether the battery needs to be charged and how to charge it, and whether the requirement of discharging to provide electrical energy is met.

[0025] The battery status can be accurately judged through the intelligent monitoring and judgment of the PLC controller.

[0026] Importantly, it should be noted that the construction and arrangement of the present application shown in a number of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, changes in orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete element may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to an alternative embodiment. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structure. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0027] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent charging and discharging optimization method, characterized in that: The intelligent charging and discharging optimization method is based on the following system components; A battery power detection module, wherein the battery power detection module establishes a connection with the battery to be detected, and the battery power detection module monitors the battery power; A PLC controller, wherein the signal output end of the battery power detection module is connected to the PLC controller, and the PLC controller determines whether the battery meets the charging or discharging requirements based on the battery power, and charges or discharges the battery through the charging and discharging end through the PLC controller; The specific method of the intelligent charging and discharging optimization method is as follows: S1: Real-time monitoring of the current battery power: a battery power detection module is connected to the battery, the battery power detection module is attached to the battery power detection module, and the battery power detection module has a wireless transmission module. The battery power detection module detects the remaining power of the battery and transmits it to the PLC controller in the form of an electrical signal through the wireless transmission module; S2: Determine whether the battery is ready for discharge or needs to be charged based on the monitoring results: There are two situations: When the PLC controller receives a control command from the external control terminal that the battery needs to be charged, the PLC controller determines whether the battery needs to be charged based on the remaining power of the battery; When the PLC controller receives a control command from an external control terminal to discharge the battery, the PLC controller determines whether the remaining battery power meets the discharge requirement based on the remaining battery power; S3: Control the battery to charge or discharge: When the battery needs to be charged, the PLC controller controls the charging circuit, and the charging circuit charges the battery until the battery is charged to the target power requirement; When the remaining battery power meets the discharge requirements, the PLC controller controls the discharge circuit, and the battery provides power to external devices through the discharge circuit.

2. The intelligent charging and discharging optimization method according to claim 1, characterized in that: The signal output end of the PLC controller is connected to the charging and discharging end and the relay switch, and the relay switch is connected to the charging and discharging end.

3. The intelligent charging and discharging optimization method according to claim 1, characterized in that: The charging and discharging end includes a mains connection terminal, an adjustable charging transformer, a battery connection terminal and a discharge connection terminal. The mains connection terminal is connected to the adjustable charging transformer, the adjustable charging transformer is connected to the battery connection terminal, the battery connection terminal is connected to the battery and a relay switch, and the relay switch is connected to the discharge connection terminal.

4. The intelligent charging and discharging optimization method according to claim 3, characterized in that: The AC power terminal, the adjustable charging transformer, and the battery connection terminal form a charging circuit, and the battery connection terminal, the relay switch, and the discharge terminal form a discharge circuit. When charging is required, the charging circuit works and the discharge circuit is in a stopped state; when discharging is required, the discharge circuit works and the charging circuit is in a stopped state.

5. An intelligent charging and discharging optimization method according to claim 3 or 4, characterized in that: The adjustable charging transformer is an electrically controlled transformer, which includes a transformer body and an electric strip coil turns mechanism.

6. The intelligent charging and discharging optimization method according to claim 5, characterized in that: The electric strip line coil turns mechanism comprises an electric telescopic mechanism and a sliding contact guide rod connected to the telescopic end of the electric telescopic mechanism. The sliding contact guide rod moves on the transformer body to change the effective coil turns of the transformer body.

7. The intelligent charging and discharging optimization method according to claim 1, characterized in that: When the battery is charging, when the remaining battery power is less than 85%, the power supply is carried out at the maximum power. When the remaining battery power is less than or equal to 85%, the power supply is charged at 25% of the maximum power. When the battery is discharging, when the remaining battery power is less than 15%, the PLC controller outputs an alarm message suggesting to stop discharging.

8. The intelligent charging and discharging optimization method according to claim 2, characterized in that: When the battery is charging, when the remaining battery power reaches 100%, a relay switch is provided to cut off the charging circuit and stop charging.

Images