Temperature regulation and control method and device for rechargeable battery of power transmission line and medium

Abstract

The embodiment of the invention discloses a temperature regulation and control method and device for a rechargeable battery of a power transmission line and a medium, and the method comprises the steps: obtaining a charging current value of the rechargeable battery when the power transmission line is powered by the rechargeable battery to work; if the charging current value is greater than a preset charging current value, acquiring a first temperature value of the rechargeable battery; if the first temperature value does not meet the first preset requirement, adjusting through a preset temperature adjusting program to enable the temperature value of the rechargeable battery to meet the first preset requirement; and if the charging current value is not greater than a preset charging current value, acquiring a second temperature value and a load condition of the rechargeable battery, and according to the second temperature value and the load condition, judging whether adjustment is performed through the temperature adjustment program so as to enable the temperature value of the rechargeable battery to meet a second preset requirement.

Description

Technical Field

[0001] The present specification relates to the field of computer technology, and in particular to a method, device and medium for controlling the temperature of a rechargeable battery in a power transmission line. Background Art

[0002] When the transmission line is in a harsh environment such as a wilderness, there is no mains power supply, and photovoltaic power supply systems are basically used, using batteries for energy storage. In a wilderness environment, cold or high temperature conditions often occur. In cold conditions, the chemical reaction rate of the battery will decrease, resulting in a decrease in battery capacity; while in high temperature conditions, the battery will accelerate aging and lose some capacity. In addition, the temperature conditions required for rechargeable batteries at different charging current values ​​are also different.

[0003] Therefore, in order to avoid the rechargeable battery from being too cold or too hot, which may cause the rechargeable battery to be unable to supply power to the load equipment of the transmission line normally, it is now necessary to effectively control the temperature of the rechargeable battery of the transmission line at different charging current values ​​to ensure that the load equipment of the transmission line can be reliably powered in harsh environments such as desolate mountains and wilderness. Summary of the invention

[0004] One or more embodiments of the present specification provide a method, device and medium for controlling the temperature of a rechargeable battery in a power transmission line, which are used to solve the technical problems raised by the background technology.

[0005] One or more embodiments of this specification adopt the following technical solutions:

[0006] One or more embodiments of this specification provide a method for controlling the temperature of a rechargeable battery in a power transmission line, including:

[0007] When the power transmission line is powered by a rechargeable battery, obtaining a charging current value of the rechargeable battery;

[0008] If the charging current value is greater than a preset charging current value, obtaining a first temperature value of the rechargeable battery;

[0009] If the first temperature value does not meet the first preset requirement, adjusting the temperature value of the rechargeable battery by a preset temperature adjustment program so that the temperature value of the rechargeable battery meets the first preset requirement;

[0010] If the charging current value is not greater than the preset charging current value, obtain the second temperature value and load condition of the rechargeable battery, and determine whether to adjust the temperature through the temperature adjustment program based on the second temperature value and the load condition so that the temperature value of the rechargeable battery reaches the second preset requirement.

[0011] One or more embodiments of this specification provide a temperature control device for a rechargeable battery of a power transmission line, including:

[0012] at least one processor; and,

[0013] a memory communicatively connected to the at least one processor; wherein,

[0014] The memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to enable the at least one processor to:

[0015] When the power transmission line is powered by a rechargeable battery, obtaining a charging current value of the rechargeable battery;

[0016] If the charging current value is greater than a preset charging current value, obtaining a first temperature value of the rechargeable battery;

[0017] If the first temperature value does not meet the first preset requirement, adjusting the temperature value of the rechargeable battery by a preset temperature adjustment program so that the temperature value of the rechargeable battery meets the first preset requirement;

[0018] If the charging current value is not greater than the preset charging current value, obtain the second temperature value and load condition of the rechargeable battery, and determine whether to adjust the temperature through the temperature adjustment program based on the second temperature value and the load condition so that the temperature value of the rechargeable battery reaches the second preset requirement.

[0019] One or more embodiments of this specification provide a non-volatile computer storage medium storing computer executable instructions, which can achieve the following when executed by a computer:

[0020] When the power transmission line is powered by a rechargeable battery, obtaining a charging current value of the rechargeable battery;

[0021] If the charging current value is greater than a preset charging current value, obtaining a first temperature value of the rechargeable battery;

[0022] If the first temperature value does not meet the first preset requirement, adjusting the temperature value of the rechargeable battery by a preset temperature adjustment program so that the temperature value of the rechargeable battery meets the first preset requirement;

[0023] If the charging current value is not greater than the preset charging current value, obtain the second temperature value and load condition of the rechargeable battery, and determine whether to adjust the temperature through the temperature adjustment program based on the second temperature value and the load condition so that the temperature value of the rechargeable battery reaches the second preset requirement.

[0024] At least one of the above technical solutions adopted in the embodiments of this specification can achieve the following beneficial effects:

[0025] The embodiments of this specification obtain the corresponding temperature values ​​reached by the rechargeable battery for different charging currents of the rechargeable battery, and adjust the temperature through the temperature adjustment program so that the temperature value obtained by the rechargeable battery meets the temperature requirements of the load equipment of the power transmission line, thereby avoiding the temperature of the rechargeable battery being too low or too high, resulting in the rechargeable battery being unable to supply the load equipment of the power transmission line normally, and ensuring that the load equipment of the power transmission line can be reliably powered in harsh environments such as desolate mountains and wilderness. At the same time, the embodiments of this specification can increase the service life of the rechargeable battery, improve the reliability of the system, and reduce the risk of accidents and failures. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of this specification or the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art description. Obviously, the drawings described below are only some embodiments recorded in this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. In the drawings:

[0027] Figure 1 A flow chart of a method for controlling the temperature of a rechargeable battery in a power transmission line provided in one or more embodiments of this specification

[0028] Figure 2 A schematic diagram of the overall system architecture provided for one or more embodiments of this specification;

[0029] Figure 3 A schematic diagram of the structure of a smart battery box provided for one or more embodiments of this specification;

[0030] Figure 4 A schematic diagram of a battery assembly provided for one or more embodiments of this specification;

[0031] Figure 5 A schematic diagram of a smart battery box frame provided for one or more embodiments of this specification;

[0032] Figure 6 A schematic diagram of temperature analysis of an engineering process provided for one or more embodiments of this specification;

[0033] Figure 7 A schematic diagram of weather analysis of an engineering process provided for one or more embodiments of this specification;

[0034] Figure 8 A schematic diagram of the structure of a water-cooled circulating heat dissipation device provided for one or more embodiments of this specification;

[0035] Fig. 9 A schematic diagram of an intelligent battery box frame with water cooling circulation and heat dissipation provided in one or more embodiments of this specification;

[0036] Fig.10 A schematic diagram of temperature analysis of an engineering process with water cooling circulation heat dissipation provided for one or more embodiments of this specification;

[0037] Fig.11 A schematic diagram of the structure of a temperature control device for a rechargeable battery of a power transmission line provided in one or more embodiments of this specification. DETAILED DESCRIPTION

[0038] The embodiments of this specification provide a method, device and medium for controlling the temperature of a rechargeable battery in a power transmission line.

[0039] The monitoring environment of transmission lines is in the wilderness, without mains electricity supply. Most of them use photovoltaic power supply systems and batteries for energy storage, with lithium batteries being the mainstream. Sometimes the outdoor environment is harsh, especially when working in extremely cold environments. Other components can withstand it, but the battery capacity may be greatly attenuated, or even unable to discharge, resulting in equipment disconnection. For example, the operating temperature of lithium iron phosphate batteries is generally between -10℃ and 60℃, and the capacity has decayed to 80% of the rated capacity at 0℃; in high temperature environments, if the core temperature of the battery exceeds 60℃, power-off protection is required to prevent affecting the battery life; sometimes continuous rainy weather will also cause the power supply system to run out of power, resulting in equipment disconnection.

[0040] In order to enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below in conjunction with the drawings in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments of this specification, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this specification.

[0041] Figure 1 A schematic diagram of a method for controlling the temperature of a rechargeable battery in a power transmission line according to one or more embodiments of the present specification is provided. The method can be executed by a temperature control system for a rechargeable battery. Certain input parameters or intermediate results in the method allow manual intervention and adjustment to help improve accuracy.

[0042] The method steps of the embodiment of this specification are as follows:

[0043] S102, when the power transmission line is powered by a rechargeable battery, obtaining a charging current value of the rechargeable battery.

[0044] In the embodiments of this specification, the charging current value of the rechargeable battery can be obtained by a current sensor or a measuring instrument. Obtaining the charging current value can help evaluate the charging state and workload of the rechargeable battery, so as to better understand the usage of the rechargeable battery, for example, whether it is charging, discharging, or in a dormant state.

[0045] According to the value of the charging current, the capacity and health status of the rechargeable battery can also be inferred. According to the value of the charging current, the value of the charging current and the charging time can also be adjusted to maximize the service life of the rechargeable battery. In addition, by monitoring the charging current value, abnormal conditions such as overcharging or over-discharging can be discovered in time, so that corresponding measures can be taken to protect the rechargeable battery.

[0046] In short, by obtaining the charging current value, real-time monitoring and evaluation of the status and working condition of the rechargeable battery can be provided, providing important data support for the management and maintenance of the rechargeable batteries of the transmission lines.

[0047] S104: If the charging current value is greater than a preset charging current value, obtaining a first temperature value of the rechargeable battery.

[0048] In the embodiment of the present specification, when the charging current value exceeds the preset charging current value, it means that the rechargeable battery is in a charging state with sufficient sunlight. Because the output of the solar photovoltaic power generation system is affected by the intensity of sunlight, further obtaining the current first temperature value of the rechargeable battery can be used to determine whether the temperature required for the charging state meets the preset temperature.

[0049] By comparing the current first temperature value of the rechargeable battery with the preset temperature range, it can be determined whether the temperature of the rechargeable battery is within the normal working range. If the temperature value is too high or too low, it may affect the performance and life of the rechargeable battery and even cause safety problems.

[0050] Therefore, obtaining the current first temperature value of the rechargeable battery can provide further confirmation of the charging state to ensure that the rechargeable battery operates under suitable temperature conditions. According to the result of the temperature value, corresponding control measures can be taken, such as adjusting the charging current, providing heat dissipation or heating, etc., to keep the rechargeable battery within the normal operating temperature range. In this way, the performance and stability of the rechargeable battery can be ensured and its service life can be extended.

[0051] S106: If the first temperature value does not meet the first preset requirement, adjust the temperature value of the rechargeable battery by a preset temperature adjustment program so that the temperature value of the rechargeable battery meets the first preset requirement.

[0052] In the embodiments of the present specification, if the first temperature value is lower than the first preset requirement, heating can be performed through a preset temperature adjustment program so that the temperature value of the rechargeable battery reaches the first preset requirement. The temperature adjustment program can be set according to the temperature of the rechargeable battery and the required temperature adjustment rate. A heating element (such as a heater) can be used to provide heat and placed around or inside the rechargeable battery to heat the rechargeable battery, and a cooling element (such as a refrigerator) can be used to reduce the temperature and placed around or inside the rechargeable battery to cool the rechargeable battery.

[0053] By controlling the temperature adjustment program, the temperature of the rechargeable battery can be gradually adjusted until the set first preset requirement is reached. The temperature of the rechargeable battery can be monitored in real time according to the temperature adjustment rate and the feedback from the temperature sensor, and the temperature adjustment process can be adjusted accordingly.

[0054] It should be noted that the specific temperature adjustment procedure and equipment configuration can be designed and implemented according to the actual situation. This requires comprehensive consideration of factors such as the type, capacity, and environmental conditions of the rechargeable battery, and compliance with relevant safety standards and regulations.

[0055] S108, if the charging current value is not greater than the preset charging current value, obtain the second temperature value and load condition of the rechargeable battery, and determine whether to adjust the temperature through the temperature adjustment program according to the second temperature value and the load condition so that the temperature value of the rechargeable battery reaches a second preset requirement.

[0056] In the embodiment of this specification, if the charging current value is not greater than the preset charging current value, it may indicate that the rechargeable battery is not in a charging state. This may mean that the rechargeable battery is full or has not received enough solar energy to maintain the charging state. At this time, the rechargeable battery can only supply the load for discharge.

[0057] In the embodiment of the present specification, the second temperature value and the load condition of the rechargeable battery are obtained, and according to the second temperature value and the load condition, it is determined whether to adjust through the temperature adjustment program so that the temperature value of the rechargeable battery reaches the second preset requirement. If the second temperature value is lower than the first preset temperature, it is detected whether there is a load current. The first preset temperature can be the lowest temperature at which the rechargeable battery maintains the power supply of the load. When the second temperature value is lower than the first preset temperature, the rechargeable battery cannot maintain the normal operation of the load, that is, when it is determined that there is a load current, the load can be disconnected, and the temperature adjustment program is used for heating so that the temperature value of the rechargeable battery reaches the first preset temperature, and the load is turned on in the next process. When the next process is turned on, the temperature of the rechargeable battery reaches the first preset temperature, that is, the load can be maintained in operation. The second preset requirement is that the temperature value of the rechargeable battery reaches the first preset temperature. In addition, when the next process is turned on, the size of the load current can also be detected. If the load current is detected to be too high, in order to ensure that the load can operate normally, the temperature adjustment program can continue to heat so that the load can operate better. The first preset temperature can be set according to the type of rechargeable battery. For example, if the rechargeable battery is a lithium iron phosphate battery, the first preset temperature can be set to -20°C.

[0058] Further, if it is detected that there is no load current, it can be determined whether the second temperature value is lower than the second preset temperature. The second preset temperature can be the lowest temperature at which the rechargeable battery maintains no-load power supply. When the second temperature value is lower than the second preset temperature, the rechargeable battery cannot maintain normal operation of no-load power supply. If it is determined that the second temperature value is lower than the second preset temperature, the temperature adjustment program can be used to heat the rechargeable battery so that the temperature value of the rechargeable battery reaches the second preset temperature. The second preset temperature is lower than the first preset temperature. The second preset requirement is that the temperature value of the rechargeable battery reaches the second preset temperature. The second preset temperature can be set according to the type of rechargeable battery. For example, if the rechargeable battery is a lithium iron phosphate battery, the second preset temperature can be set to -30°C.

[0059] Furthermore, in the embodiment of this specification, the second temperature value and load condition of the rechargeable battery are obtained, and according to the second temperature value and the load condition, it is determined whether to adjust the temperature through the temperature adjustment program so that the temperature value of the rechargeable battery reaches the second preset requirement. If the second temperature value is between the first preset temperature and the third preset temperature, the load current of the rechargeable battery is obtained, and the third preset temperature is greater than the first preset temperature; if the load current is less than the preset load current value, the working mode is set to low power consumption mode, and the temperature value of the rechargeable battery is maintained above the first preset temperature. The second preset requirement is that the temperature value of the rechargeable battery is maintained above the first preset temperature. The third preset temperature can be set according to the type of the rechargeable battery. For example, if the rechargeable battery is a lithium iron phosphate battery, the third preset temperature can be set to 0°C.

[0060] Furthermore, in the embodiments of this specification, after the load is turned on in the next process mentioned above, the load current of the rechargeable battery can be obtained; if the load current is less than the preset load current value, the temperature value of the rechargeable battery can be maintained above the first preset temperature; if the load current is not less than the preset load current value, the temperature value of the rechargeable battery can be maintained above the third preset temperature by heating through the temperature adjustment program.

[0061] Furthermore, if the load current is not less than the preset load current value, the working mode is set to a high power consumption mode, and a higher temperature is required for the load to operate normally, the temperature adjustment program can be used for heating to maintain the temperature value of the rechargeable battery above the third preset temperature. The second preset requirement is that the temperature value of the rechargeable battery is maintained above the third preset temperature.

[0062] Furthermore, the embodiment of this specification obtains the second temperature value and load condition of the rechargeable battery, and determines whether to adjust through the temperature adjustment program according to the second temperature value and the load condition, so that when the temperature value of the rechargeable battery reaches the second preset requirement, if the second temperature value is between the third preset temperature and the fourth preset temperature, the load is turned on, and the temperature range can support the load to operate in high power consumption mode and maintain the temperature value of the rechargeable battery above the third preset temperature. The second preset requirement is that the temperature value of the rechargeable battery is maintained above the third preset temperature, and the fourth preset temperature is greater than the third preset temperature. The fourth preset temperature can be set according to the type of rechargeable battery. For example, if the rechargeable battery is a lithium iron phosphate battery, the fourth preset temperature can be set to 60°C.

[0063] Furthermore, the embodiment of the present specification obtains the second temperature value and load condition of the rechargeable battery, and determines whether to adjust the temperature through the temperature adjustment program based on the second temperature value and the load condition so that the temperature value of the rechargeable battery reaches the second preset requirement. If the second temperature value is greater than the fourth preset temperature, it indicates that the maximum temperature of the load operation is exceeded, and it is necessary to turn off the temperature adjustment program and disconnect the load switch to maintain the temperature value of the rechargeable battery between the third preset temperature and the fourth preset temperature. The temperature can also be cooled by the refrigeration function of the temperature adjustment program to maintain the temperature value of the rechargeable battery between the third preset temperature and the fourth preset temperature. The second preset requirement is that the temperature value of the rechargeable battery is maintained between the third preset temperature and the fourth preset temperature.

[0064] Furthermore, the embodiments of this specification can also combine weather information and ambient temperature to set a corresponding working mode for the load so that the load can operate better, specifically:

[0065] Acquire weather information for a specified number of days, and determine the number of consecutive days without sunlight and the ambient temperature according to the weather information; if the number of consecutive days without sunlight is less than a preset number of days, and the ambient temperature is greater than the third preset temperature, set the working mode to the high power consumption mode; if the number of consecutive days without sunlight is not less than the preset number of days, and the ambient temperature is less than the third preset temperature, set the working mode to the low power consumption mode. The preset number of days can be set according to actual conditions, for example, the preset number of days is 1 day.

[0066] It should be noted that the embodiment of this specification proposes a method to solve the problem of abnormal operation of the photovoltaic power supply system of the transmission line monitoring equipment under various ambient temperatures, especially extremely low temperatures, and different weather environments. The entire system can work normally in the range of -40℃ to 60℃. At low temperatures, by detecting whether there is a load, the heating function can enter a low power consumption mode when there is no load to save energy. It has the functions of monitoring the battery charging and discharging voltage, charging and discharging current, battery capacity, battery temperature, overcurrent and overvoltage protection, etc. It has the function of hibernating the no-load system to save energy and resuming power supply after connecting to the load. It has different strategies according to the different core temperatures of the battery to control the subsequent working state of the battery and avoid system disconnection as much as possible. It has the optimization processing of the subsequent working state of the battery and the working mode of the load according to the ambient temperature and weather information, so that the entire system can avoid disconnection as much as possible. It has a photovoltaic panel tracking control system, which adjusts the photovoltaic panel to always face the sun according to the angle of the sun, greatly improving the charging efficiency. The system reports the information of the battery system through 4G and 5G communication technology. The operating temperature of the battery is determined according to the size of the load current, because the current that the battery can discharge at different temperatures is different. The battery operating temperature is adjusted according to the charging current. Generally, the battery needs to be charged above 0 degrees, otherwise the charging efficiency will be reduced and effective charging will not be possible.

[0067] The system structure of the embodiment of this specification specifically includes the following contents:

[0068] System architecture Figure 2 The schematic diagram of the entire system architecture shown includes solar panels, sun tracking control unit, smart battery box, camera and server.

[0069] like Figure 3 The schematic diagram of the structure of the smart battery box is shown, which includes a smart control board, a battery cell assembly, a graphene heating film, a battery cell core temperature sensor and an ambient temperature sensor.

[0070] The camera has a built-in 4G / 5G communication module, which can communicate with the backend server.

[0071] The core temperature sensor of the smart battery box is embedded in the center of the battery pack. The temperature measurement range of the sensor covers -40℃~60℃. Its function is to detect the temperature of the center of the battery pack in real time. The external environment temperature sensor is installed on the outer shell of the battery box to sense the external environment temperature.

[0072] like Figure 4 The battery assembly schematic diagram is shown, and the graphene heating film is embedded in the battery frame. The graphene heating film has the characteristics of rapid heating, which improves the heating efficiency. The graphene heating power can be adjusted steplessly by PWM driving K4 (MOS switch).

[0073] The battery is wrapped with a pearl cotton insulation layer to reduce the heat conduction of the battery to the outside.

[0074] like Figure 5 The schematic diagram of the intelligent battery box is shown, the battery charging and discharging unit charges and discharges the lithium battery, and the MOS switches K3, K4, and K5 are used to make the system work in different modes.

[0075] Connect the load: Figure 5 Just turn on switches K3 and K5.

[0076] Heating stop: Figure 5 Just turn off K4 in .

[0077] Keep the core temperature above the threshold Tcx: Figure 5 In the process, the PID algorithm is used to output a PWM waveform to control the switch K4. The difference between the target value Tcx and the core temperature acquisition value is the PID calculation variable.

[0078] Solar panel tracking control unit control: controlled via 485 communication.

[0079] The microcontroller controls the camera working mode: controlled by 485 communication.

[0080] Core temperature collection: collected through PT1000 preset in the battery core.

[0081] Ambient temperature collection: collected through the PT1000 installed on the box casing.

[0082] Battery charge detection: by integrating the current.

[0083] It should be noted that the schematic diagram of the engineering process temperature analysis of the embodiment of this specification can be found in Figure 6 , as follows:

[0084] When the system detects that the charging current is greater than Ic1 and the core board temperature is less than Tc0, the load switch is turned on to keep the battery temperature above Tc1. If the charging current is greater than Ic1, it means that the photovoltaic panel is charging the battery and has sufficient power. If the temperature is not Tc1, the temperature adjustment program is run to make the temperature reach Tc1, which helps to improve the charging efficiency. At this time, the heating energy comes from the photovoltaic panel.

[0085] If the current is greater than IC1, it means that the sunlight is sufficient and the battery needs to be charged. The battery needs to be kept above Tc1 (0 degrees Celsius for lithium iron phosphate). At this time, due to photovoltaic power supply, the battery power is basically not consumed, so the load can be powered normally.

[0086] When the system detects that the charging current is less than Ic1, it means that there is not enough charging power, and then further judgment is made:

[0087] 1) If the temperature is lower than Tc2, the load switch is turned on to detect whether there is load current. If there is, the load switch is turned off and the temperature adjustment program is started to maintain the core temperature to Tc2. When the system temperature reaches Tc2, the load will be turned on in the next process cycle. If there is no load current, it means there is no load, then it is only necessary to maintain the system temperature at Tc3.

[0088] 2) If the temperature is between Tc2 and Tc1, the subsequent control is performed according to the load conditions. If the load current is less than Idc1, the core temperature can be maintained at Tc2, which is a small load; if the current is greater than Idc1, the core temperature needs to be maintained at Tc1, and a large load is supplied; if no load is detected, the core temperature only needs to be maintained at Tc3.

[0089] 3) If the temperature is between Tc1 and Tc0, which is the range where the battery can be fully discharged, the load switch is turned on and heating is stopped. It is determined whether the temperature will drop below Tc1 within T hours. If so, the camera will enter low power mode (to save power in advance, because the ambient temperature will be low after a period of time and energy will be consumed) and maintain the core temperature at Tc2; if not, it will operate in normal mode.

[0090] 4) If the temperature is above Tc0, turn off the heating and disconnect the load switch to allow the core temperature to drop to protect the battery.

[0091] At any time, the heating film is powered to heat the battery. At this time, the heating current needs to be controlled. The principle is that the battery voltage Vb must not be lower than the safety voltage (the greater the heating power, the lower the voltage).

[0092] It should be noted that the engineering process weather analysis diagram of the embodiment of this specification can be found in Figure 7 , as follows:

[0093] First determine whether weather information can be received. If not, the camera works in medium power consumption mode.

[0094] If weather information can be received and there will be less than X cloudy days starting tomorrow, or the current ambient temperature is higher than Th1, the system can work in normal power consumption mode; if there will be X to Y cloudy days starting tomorrow, or the current ambient temperature is lower than Th1 and higher than Th2, the system will work in medium power consumption mode; if there will be more than Y cloudy days starting tomorrow, or the ambient temperature is lower than Th2, the system will work in low power consumption mode. X, Y, Th1 and Th2 can be set according to actual conditions.

[0095] This system uses multi-sensor acquisition, battery controller and video surveillance communication algorithms to solve the problem of low-temperature operation of the battery in the power transmission line monitoring system, as well as the problem of working strategies under various weather conditions, which increases the battery life, greatly improves the online rate of the camera system, and reduces the risk of loss of connection. This system can work continuously and normally at -40℃~60℃, and is suitable for power supply of power transmission line monitoring system equipment in various environments.

[0096] Regarding the parameters mentioned above, the specific values ​​are given below:

[0097] Tc0--Core temperature threshold: LiFePO4 is about 60℃; (because the operating temperature range of this type of battery is -20~60℃)

[0098] Tc1--Core temperature threshold: LiFePO4 is about 0℃; (because the charging temperature range of this type of battery is 0~60℃)

[0099] Tc2--Core temperature threshold: LiFePO4 is about -20℃; (because this type of battery can discharge about 40% at this temperature)

[0100] Tc3--Core temperature threshold: LiFePO4 is about -30℃; (because this type of battery cannot discharge at this temperature)

[0101] Ic1--Charging current threshold: 0.1*(solar panel power / solar panel rated voltage)A;

[0102] Idc1--discharge current threshold: 0.05CA, C is the battery capacity ampere-hour;

[0103] T--The temperature drops below Tc1 after this number of hours;

[0104] Th1—Ambient temperature threshold: LiFePO4 is set to -10°C;

[0105] Th2—Ambient temperature threshold: LiFePO4 is set to -20°C.

[0106] Furthermore, if the temperature is above Tc0, the heat can also be dissipated through a water cooling cycle. Figure 8 The schematic diagram of the structure of the water-cooled circulating heat dissipation device shown in the figure, the heat dissipation working parts include a liquid pump, a heat absorbing plate, a radiator and a liquid pipeline. The heat absorbing plate is wrapped in the thermal insulation cotton and heating film of the battery, and is in full contact with the battery cell part, so as to absorb the heat generated by the battery cell. The heat absorbing plate has a water inlet and a water outlet. The water inlet is connected to the output port of the liquid pump, and the water outlet is connected to the radiator outside the battery box through a pipe. Under normal circumstances, the liquid pipeline, the radiator and the heat absorbing plate are filled with coolant (pure water or professional coolant).

[0107] The following is the working process of heat dissipation through water cooling cycle

[0108] 1. When the battery heat is lower than the upper limit Tc0-5℃, the liquid pump does not work, the one-way valve is closed, and the internal heat is basically not conducted outward. Tc0-5℃ is Tc0 minus 5℃. When Tc0 is 60℃, Tc0-5℃ is 55℃.

[0109] 2. When the core temperature of the battery reaches Tc0-5℃, the system will start the liquid pump and the liquid will begin to circulate in the system.

[0110] 3. The external low-temperature liquid is pumped into the heat absorbing plate through the liquid pump. The heat absorbing plate absorbs the heat of the battery cell and takes it away with the liquid.

[0111] 4. The heated liquid reaches the external radiator through the outlet of the heat absorbing plate. The radiator quickly dissipates the heat of the high-temperature liquid to a low-temperature state.

[0112] Repeat the above steps, the heat inside the battery will be taken out and dissipated, thus achieving the purpose of cooling the battery cell.

[0113] Furthermore, when heat is dissipated through a water cooling cycle, compared to Figure 5 The smart battery box shown has a new liquid pump related part, which can be seen in Fig. 9 The schematic diagram of the intelligent battery box frame with water cooling circulation heat dissipation is shown. Figure 6 The engineering process temperature analysis diagram shown is that the core temperature is greater than Tc0-5℃. By turning off the heating and disconnecting the load switch, the core temperature can be lowered and the heat can be dissipated through the water cooling cycle. Fig.10 The diagram shows the temperature analysis of the engineering process with water cooling circulation heat dissipation.

[0114] Corresponding to the above embodiment, Fig.11 A schematic diagram of a temperature control device for a rechargeable battery of a power transmission line provided in one or more embodiments of this specification includes:

[0115] at least one processor and a bus; and,

[0116] a memory communicatively connected to the at least one processor; wherein,

[0117] The memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to enable the at least one processor to:

[0118] When the power transmission line is powered by a rechargeable battery, obtaining a charging current value of the rechargeable battery;

[0119] If the charging current value is greater than a preset charging current value, obtaining a first temperature value of the rechargeable battery;

[0120] If the first temperature value does not meet the first preset requirement, adjusting the temperature value of the rechargeable battery by a preset temperature adjustment program so that the temperature value of the rechargeable battery meets the first preset requirement;

[0121] If the charging current value is not greater than the preset charging current value, obtain the second temperature value and load condition of the rechargeable battery, and determine whether to adjust the temperature through the temperature adjustment program based on the second temperature value and the load condition so that the temperature value of the rechargeable battery reaches the second preset requirement.

[0122] One or more embodiments of this specification provide a non-volatile computer storage medium storing computer executable instructions, which can achieve the following when executed by a computer:

[0123] When the power transmission line is powered by a rechargeable battery, obtaining a charging current value of the rechargeable battery;

[0124] If the charging current value is greater than a preset charging current value, obtaining a first temperature value of the rechargeable battery;

[0125] If the first temperature value does not meet the first preset requirement, adjusting the temperature value of the rechargeable battery by a preset temperature adjustment program so that the temperature value of the rechargeable battery meets the first preset requirement;

[0126] If the charging current value is not greater than the preset charging current value, obtain the second temperature value and load condition of the rechargeable battery, and determine whether to adjust the temperature through the temperature adjustment program based on the second temperature value and the load condition so that the temperature value of the rechargeable battery reaches the second preset requirement.

[0127] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device and non-volatile computer storage medium embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiments.

[0128] The above is a description of a specific embodiment of the specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the embodiments and still achieve the desired results. In addition, the processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0129] The above description is only one or more embodiments of this specification and is not intended to limit this specification. For those skilled in the art, one or more embodiments of this specification may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of one or more embodiments of this specification shall be included in the scope of the claims of this specification.

Claims

1. A method for controlling the temperature of a rechargeable battery in a power transmission line, characterized in that: The method comprises: When the power transmission line is powered by a rechargeable battery, obtaining a charging current value of the rechargeable battery; If the charging current value is greater than a preset charging current value, obtaining a first temperature value of the rechargeable battery; If the first temperature value does not meet the first preset requirement, adjusting the temperature value of the rechargeable battery by a preset temperature adjustment program so that the temperature value of the rechargeable battery meets the first preset requirement; If the charging current value is not greater than the preset charging current value, obtain the second temperature value and load condition of the rechargeable battery, and determine whether to adjust the temperature through the temperature adjustment program based on the second temperature value and the load condition so that the temperature value of the rechargeable battery reaches the second preset requirement.

2. The method according to claim 1, characterized in that: The obtaining of the second temperature value and the load condition of the rechargeable battery, and judging whether to adjust the temperature through the temperature adjustment program according to the second temperature value and the load condition so that the temperature value of the rechargeable battery reaches a second preset requirement, includes: If the second temperature value is lower than the first preset temperature, detecting whether there is a load current; If so, disconnect the load, heat the battery through the temperature adjustment program so that the temperature of the rechargeable battery reaches the first preset temperature, and turn on the load in the next process. The second preset requirement is that the temperature of the rechargeable battery reaches the first preset temperature.

3. The method according to claim 2, characterized in that If it is detected that there is no load current, the method further includes: Determining whether the second temperature value is lower than a second preset temperature; If so, heating is performed through the temperature adjustment program so that the temperature value of the rechargeable battery reaches the second preset temperature, the second preset temperature is lower than the first preset temperature, and the second preset requirement is that the temperature value of the rechargeable battery reaches the second preset temperature.

4. The method according to claim 3, characterized in that: The obtaining of the second temperature value and the load condition of the rechargeable battery, and judging whether to adjust the temperature through the temperature adjustment program according to the second temperature value and the load condition so that the temperature value of the rechargeable battery reaches a second preset requirement, includes: If the second temperature value is between the first preset temperature and a third preset temperature, obtaining the load current of the rechargeable battery, and the third preset temperature is greater than the first preset temperature; If the load current is less than the preset load current value, the working mode is set to the low power consumption mode, and the temperature value of the rechargeable battery is maintained above the first preset temperature. The second preset requirement is that the temperature value of the rechargeable battery is maintained above the first preset temperature.

5. The method according to claim 4, characterized in that If the load current is not less than the preset load current value, setting the working mode to a high power consumption mode, the method further includes: The temperature of the rechargeable battery is maintained above the third preset temperature by heating through the temperature adjustment program, and the second preset requirement is that the temperature of the rechargeable battery is maintained above the third preset temperature.

6. The method according to claim 4, characterized in that The obtaining of the second temperature value and the load condition of the rechargeable battery, and judging whether to adjust the temperature through the temperature adjustment program according to the second temperature value and the load condition so that the temperature value of the rechargeable battery reaches a second preset requirement, includes: If the second temperature value is between the third preset temperature and the fourth preset temperature, the load is turned on and the temperature value of the rechargeable battery is maintained above the third preset temperature. The second preset requirement is that the temperature value of the rechargeable battery is maintained above the third preset temperature, and the fourth preset temperature is greater than the third preset temperature.

7. The method according to claim 6, characterized in that The obtaining of the second temperature value and the load condition of the rechargeable battery, and judging whether to adjust the temperature through the temperature adjustment program according to the second temperature value and the load condition so that the temperature value of the rechargeable battery reaches a second preset requirement, includes: If the second temperature value is greater than the fourth preset temperature, the temperature adjustment program is turned off and the load switch is disconnected to maintain the temperature value of the rechargeable battery between the third preset temperature and the fourth preset temperature. The second preset requirement is that the temperature value of the rechargeable battery is maintained between the third preset temperature and the fourth preset temperature.

8. The method according to claim 5, characterized in that The method further comprises: Obtaining weather information for a specified number of days, and determining the number of consecutive days without sunshine and the ambient temperature based on the weather information; If the number of consecutive days without sunlight is less than the preset number of days, and the ambient temperature is greater than the third preset temperature, setting the working mode to the high power consumption mode; If the number of consecutive days without sunlight is not less than the preset number of days, and the ambient temperature is less than the third preset temperature, the working mode is set to the low power consumption mode.

9. A temperature control device for a rechargeable battery of a power transmission line, characterized in that: include: at least one processor; as well as, a memory communicatively connected to the at least one processor; wherein, The memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to enable the at least one processor to: When the power transmission line is powered by a rechargeable battery, obtaining a charging current value of the rechargeable battery; If the charging current value is greater than a preset charging current value, obtaining a first temperature value of the rechargeable battery; If the first temperature value does not meet the first preset requirement, adjusting the temperature value of the rechargeable battery by a preset temperature adjustment program so that the temperature value of the rechargeable battery meets the first preset requirement; If the charging current value is not greater than the preset charging current value, obtain the second temperature value and load condition of the rechargeable battery, and determine whether to adjust the temperature through the temperature adjustment program based on the second temperature value and the load condition so that the temperature value of the rechargeable battery reaches the second preset requirement.

10. A non-volatile computer storage medium, characterized in that: Computer executable instructions are stored, and when the computer executable instructions are executed by a computer, the following can be achieved: When the power transmission line is powered by a rechargeable battery, obtaining a charging current value of the rechargeable battery; If the charging current value is greater than a preset charging current value, obtaining a first temperature value of the rechargeable battery; If the first temperature value does not meet the first preset requirement, adjusting the temperature value of the rechargeable battery by a preset temperature adjustment program so that the temperature value of the rechargeable battery meets the first preset requirement; If the charging current value is not greater than the preset charging current value, obtain the second temperature value and load condition of the rechargeable battery, and determine whether to adjust the temperature through the temperature adjustment program based on the second temperature value and the load condition so that the temperature value of the rechargeable battery reaches the second preset requirement.

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