Standby Battery Control Method and System
By designing a backup battery control system, real-time monitoring and management of backup batteries for new energy vehicles is achieved, the problems of insufficient battery life and difficult to monitor power status are solved, and the power support capacity and energy utilization efficiency of electric vehicles in emergencies are improved.
Patent Information
- Application Number
- CN202410930712.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-11
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2044-07-11
AI Technical Summary
Traditional new energy vehicle battery systems have problems with insufficient range and long charging time, and the battery status and health status of backup batteries are difficult to effectively monitor, resulting in the inability to provide sufficient power support in an emergency.
A backup battery control system is designed, including a control center, a battery acquisition module, a battery processing module, a battery control module and a battery feedback module. Through data acquisition, health assessment and control instructions, real-time monitoring and management of backup batteries are realized.
The response speed and charging and discharging efficiency of the backup battery are improved, ensuring that the vehicle can provide timely power support in an emergency, reducing energy loss, and improving the energy utilization rate of the entire vehicle.
Smart Images

Figure CN118889603B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of new energy vehicles, and in particular to a backup battery control method and system Background Art
[0002] The rapid development of new energy vehicles has placed higher demands on the stability and reliability of vehicle energy systems. Supercapacitors are high-performance energy storage devices with fast charging and discharging, high energy density, and long life. In electric vehicles, supercapacitors can serve as backup batteries, providing short-term energy support to cope with emergencies or improve energy efficiency.
[0003] Compared with existing technologies, traditional new energy vehicle battery systems often have problems such as insufficient driving range and long charging time. Especially in emergency situations, rapid battery energy replenishment is particularly important. Moreover, since backup batteries may not be used for a long time, their charge status and health status are often difficult to effectively monitor, which may lead to insufficient power support in emergency situations. These are the problems we need to solve, for which we provide a backup battery control method and system. Summary of the Invention
[0004] The object of the present invention is to provide a backup battery control method and system.
[0005] The object of the present invention can be achieved by the following technical solution: a backup battery control system includes a control center, wherein the control center is communicatively connected to a battery acquisition module, a battery processing module, a battery management and control module, and a battery feedback module;
[0006] The battery acquisition module is used to collect data from the battery of the target vehicle to obtain corresponding battery information;
[0007] The battery processing module is used to perform a health assessment on the corresponding vehicle battery based on the collected battery information, obtain corresponding assessment results, and generate corresponding control instructions based on the assessment results;
[0008] The battery control module is used to perform battery control on the backup battery in the corresponding vehicle battery according to the generated control instructions;
[0009] The battery feedback module is used to monitor the battery control process and make feedback adjustments based on the monitoring results.
[0010] Furthermore, the battery acquisition module collects data from the battery of the target vehicle to obtain corresponding battery information, including:
[0011] The battery acquisition module is provided with several capture terminals, through which data of the vehicle battery is collected to obtain corresponding battery information; the battery information includes main battery data and backup battery data; the vehicle battery includes a main battery and a backup battery.
[0012] Furthermore, the process of the battery processing module performing health assessment on the corresponding vehicle battery based on the collected battery information includes:
[0013] Reading the collected backup battery data, wherein the backup battery data includes voltage, current, remaining power, and battery internal resistance;
[0014] A two-dimensional rectangular coordinate system is constructed with the remaining power as the horizontal axis and the voltage and current of the main battery as the vertical axis. The collected backup battery data is mapped into the constructed two-dimensional rectangular coordinate system to obtain the corresponding battery change curve, which includes a voltage-power change curve and a current-power change curve.
[0015] Setting a monitoring period, and dividing the monitoring period into a plurality of consecutive sub-periods;
[0016] Reading the data group corresponding to the corresponding sub-cycle to obtain cycle data, obtaining the cycle resistance corresponding to the corresponding backup battery in the sub-cycle based on the obtained cycle data, and obtaining the health factor of the corresponding backup battery based on the obtained cycle resistance;
[0017] Set a health threshold and compare the obtained monitoring coefficient with the corresponding monitoring threshold. If the health coefficient is not higher than the health threshold, the corresponding backup battery is in a poor state; if the health coefficient is higher than the health threshold, the corresponding backup battery is in a healthy state.
[0018] Use the same method to conduct a health assessment on the target vehicle's main battery and take appropriate measures based on the assessment results;
[0019] After the main battery health assessment is completed, the assessment results of the corresponding vehicle battery are obtained; if at least one of the main battery and the backup battery is in a poor condition, a corresponding fault warning is generated and fed back to the control center;
[0020] If both the main battery and the backup battery are in a healthy state, the main battery data corresponding to the corresponding main battery is read and corresponding control instructions are generated based on the data.
[0021] Furthermore, the process of generating corresponding control instructions based on the health assessment results includes:
[0022] Reading the remaining power in the main battery data and marking it as a first power;
[0023] A first power threshold is set, the obtained first power is compared with the first power threshold, and corresponding control instructions are generated according to the comparison result, where the control instructions include a first control instruction and a second control instruction.
[0024] Furthermore, the battery management and control module is provided with a power recovery unit and a battery management and control unit; the power recovery unit is used to recover the electricity consumed by the target vehicle during driving and record the data to obtain corresponding electric energy recovery data, and the electric energy recovery data includes the charge amount and the recovered electric energy power; the battery management and control unit is used to perform corresponding battery management on the target backup battery according to the received control instructions.
[0025] Furthermore, the process of performing corresponding battery control on the target backup battery according to the received control instruction includes:
[0026] When receiving the first control instruction, the battery control unit obtains basic information of the vehicle and obtains the vehicle demand power of the target vehicle in combination with the constructed vehicle demand model;
[0027] Setting a first power and a second power based on the obtained vehicle required power, and simultaneously connecting the corresponding backup battery to a power device of the target vehicle;
[0028] Reading the obtained regenerative charge and connecting it to the power unit of the target vehicle to obtain the corresponding regenerative power, and setting the first discharge power and the second discharge power based on the obtained regenerative power and the vehicle's required power;
[0029] Applying the obtained first discharge power and second discharge power to the main battery and backup battery in the target vehicle respectively for discharge control;
[0030] At the same time, the battery management and control unit sets a first charging power according to the obtained first discharge power and applies it to the backup battery, and at the same time performs charging management and control on the charging process of the corresponding main battery based on the first charging power;
[0031] When receiving the second control instruction, the battery control unit reads the collected backup battery data and obtains the first charging data corresponding to the corresponding backup battery based on the data;
[0032] Read the remaining power corresponding to the corresponding backup battery, mark it as backup power, compare the obtained backup power with the power standard, and judge whether the corresponding regenerative charge meets the requirements for connecting to the backup battery based on the comparison result. If it meets the requirements, charge the corresponding backup battery based on the regenerative charge; if it does not meet the requirements, connect the corresponding regenerative charge to the power unit of the target vehicle.
[0033] Furthermore, the battery feedback module monitors the battery control process and performs feedback adjustment based on the monitoring results, including:
[0034] Based on the capture end, data is collected on the backup battery in the corresponding control process to obtain corresponding real-time backup battery data, and then based on the obtained real-time backup battery data, a float charge voltage corresponding to the corresponding backup battery is obtained;
[0035] Constructing a two-dimensional rectangular coordinate system between time and float charge voltage, and mapping the real-time acquired float charge voltage into the two-dimensional rectangular coordinate system to obtain a corresponding float charge voltage change curve;
[0036] Set the float charge threshold range and map it to the float charge voltage variation curve;
[0037] If the float charge voltage change curve is within the float charge threshold range, no other operations are performed;
[0038] If the float charge voltage change curve is outside the float charge threshold range, the connection between the backup battery and the power unit and the main battery will be disconnected; at the same time, a corresponding backup battery fault warning will be generated and fed back to the control center.
[0039] Furthermore, the backup battery control method includes the following steps:
[0040] Step 1: Collect data on the battery of the target vehicle to obtain corresponding battery information;
[0041] Step 2: Perform a health assessment on the corresponding vehicle battery based on the collected battery information, obtain the corresponding assessment results, and generate corresponding control instructions based on the assessment results;
[0042] Step 3: Perform battery control on the backup battery in the corresponding vehicle battery according to the generated control command;
[0043] Step 4: Monitor the battery control process and make feedback adjustments based on the monitoring results.
[0044] Compared with the prior art, the present invention has the following beneficial effects:
[0045] 1. Using supercapacitors to build a vehicle backup battery has faster response time and higher charge and discharge efficiency. It can provide a large amount of power in a very short time, effectively ensuring the safe operation of the vehicle in an emergency.
[0046] 2. By monitoring the safety status of the backup battery, formulating corresponding control instructions based on the monitoring results, and adjusting the charge and discharge power of the backup battery, it is beneficial to maximize the energy of the supercapacitor module, reduce energy loss, and improve the energy utilization rate of the entire vehicle; at the same time, it helps to protect the vehicle battery and improve charging efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0047] Figure 1 It is the system principle diagram of the present invention;
[0048] Figure 2 Flow chart of the method of the present invention. DETAILED DESCRIPTION
[0049] like Figure 1 As shown, the backup battery control system includes a control center, which is communicatively connected to a battery acquisition module, a battery processing module, a battery management and control module, and a battery feedback module;
[0050] The battery acquisition module is used to collect data from the vehicle battery in the target vehicle to obtain corresponding battery information, wherein the battery information includes main battery data and backup battery data;
[0051] It should be further explained that, in a specific implementation process, the battery acquisition module collects data from the vehicle battery in the target vehicle, and the process of obtaining corresponding battery information includes:
[0052] The battery acquisition module is provided with a plurality of capture terminals, which are deployed in the vehicle battery of the target vehicle according to actual needs. The capture terminals are used to collect data from the vehicle battery to obtain corresponding battery information; the battery information includes main battery data and backup battery data; the vehicle battery includes a main battery and a backup battery, wherein the main battery and the backup battery are connected via an on-board transformer;
[0053] It should be further explained that, in the specific implementation process, the main battery is composed of several lithium batteries, and the backup battery is composed of several single supercapacitors. The capture end collects data from the main battery, and the data obtained is the main battery data. The data collected from the backup battery by the capture end is the backup battery data.
[0054] The battery processing module is used to determine whether the vehicle battery is in a healthy state based on the obtained battery information, and if not, to issue a fault warning; if so, to generate corresponding control instructions;
[0055] It should be further explained that, in a specific implementation process, the process in which the battery processing module determines whether the vehicle battery is in a healthy state based on the obtained battery information includes:
[0056] The present invention takes a backup battery as an example and reads the collected backup battery data, wherein the backup battery data includes voltage, current, remaining power, battery internal resistance and other relevant battery parameters;
[0057] A two-dimensional rectangular coordinate system is constructed with the remaining power as the horizontal axis and the voltage and current of the main battery as the vertical axis. The collected backup battery data is mapped into the constructed two-dimensional rectangular coordinate system to obtain the corresponding battery change curve, which includes a voltage-power change curve and a current-power change curve.
[0058] Setting a monitoring period, dividing the monitoring period into a plurality of consecutive sub-periods and numbering them, denoted as i, where i=1, 2, ..., n, where n>0 and n is an integer;
[0059] Read the data group corresponding to the corresponding sub-cycle i to obtain the cycle data, which includes the starting voltage, starting current, cut-off voltage and cut-off current. According to the obtained cycle data, the cycle resistance corresponding to the corresponding backup battery in the sub-cycle i is obtained and marked as DZ i ;
[0060] It should be further explained that, in a specific implementation, the periodic resistance is the ratio between the voltage variable and the current variable in the corresponding sub-period, the voltage variable is the difference between the starting voltage and the cut-off voltage, and the current variable is the difference between the starting current and the cut-off current;
[0061] Read the obtained periodic resistance DZ i , and combine the health assessment formula to obtain the health coefficient of the corresponding backup battery, and mark the obtained health coefficient as J. The corresponding mathematical formula is: Where, dz i represents the average value of the battery internal resistance collected in the corresponding sub-cycle i;
[0062] Set health thresholds, compare the obtained monitoring coefficients with the corresponding monitoring thresholds, and take corresponding measures based on the comparison results;
[0063] If the health factor is not higher than the health threshold, it indicates that the corresponding backup battery is in a poor state; if the health factor is higher than the health threshold, it indicates that the corresponding backup battery is in a healthy state;
[0064] Use the same method to conduct a health assessment on the target vehicle's main battery and take appropriate measures based on the assessment results;
[0065] After the main battery health assessment is completed, the assessment results of the corresponding vehicle battery are obtained; if at least one of the main battery and the backup battery is in a poor condition, a corresponding fault warning is generated and fed back to the control center;
[0066] If both the main battery and the backup battery are in a healthy state, the main battery data corresponding to the corresponding main battery is read and corresponding control instructions are generated based on the data;
[0067] It should be further explained that, in the specific implementation process, the process of generating corresponding control instructions based on the collected main battery data includes:
[0068] Reading the remaining power in the main battery data and marking it as a first power;
[0069] Setting a first power threshold, comparing the obtained first power with the first power threshold, and generating a corresponding control instruction based on the comparison result;
[0070] If the first power level is lower than the first power threshold, indicating that the current battery power of the corresponding main battery is too low, a first control instruction is generated;
[0071] If the first power level is not lower than the second power level threshold, indicating that the current battery power of the corresponding main battery is normal, a second control instruction is generated;
[0072] The battery management and control module is used to perform battery management and control on the target backup battery according to the obtained management and control instructions;
[0073] It should be further explained that, in a specific implementation process, the process in which the battery management and control module performs battery management and control on the target backup battery according to the obtained management and control instruction includes:
[0074] The battery management and control module is provided with a power recovery unit and a battery management and control unit;
[0075] The power recovery unit is used to recover the power consumed by the target vehicle during driving and record the data to obtain corresponding power recovery data, which includes the recovered charge amount, recovered power, etc.
[0076] The battery management and control unit is used to perform corresponding battery management and control on the target backup battery according to the received management and control instruction;
[0077] Upon receiving the first control instruction, the battery control unit obtains basic vehicle information and, based on the constructed vehicle demand model, obtains the target vehicle's power demand, which is recorded as the vehicle demand power P. The mathematical formula corresponding to the vehicle demand model is as follows:
[0078] ;
[0079] Where, u is the vehicle's speed; m is the vehicle's mass; f is the tire's rolling resistance coefficient; g is the acceleration of gravity; α is the road slope; C Dis the air resistance coefficient; A is the frontal area of the vehicle; δ is the correction coefficient of the rotating mass; η t The efficiency of the vehicle transmission system;
[0080] Setting a first power and a second power based on the obtained vehicle required power, and simultaneously connecting the corresponding backup battery to a power device of the target vehicle;
[0081] reading the obtained regenerative charge and connecting it to the power unit of the target vehicle to obtain the corresponding regenerative electric energy power, setting a first discharge power and a second discharge power based on the obtained regenerative electric energy power and the vehicle's required power, and the battery management and control unit applying the obtained first discharge power and second discharge power to the main battery and backup battery in the target vehicle, respectively; until the remaining power of the corresponding main battery is not less than a first power threshold or the remaining power of the backup battery is less than a first power standard;
[0082] At the same time, the battery management and control unit sets a first charging power according to the obtained first discharging power and applies it to the backup battery;
[0083] In one embodiment of the present invention, the main battery inputs electric energy to the power device of the target vehicle according to a first discharge power, and the backup battery inputs electric energy to the power device of the target vehicle according to a second discharge power; at the same time, the backup battery inputs electric energy to the main battery according to a first charging power. It should be further explained that the first discharge power and the first charging power must maintain a balanced state, that is, charge and discharge balance;
[0084] It should be further explained that, in a specific implementation, one embodiment of the present invention further includes: when the first power level is lower than the second power level standard, the battery management and control unit reads the main battery data of the main battery, and obtains second charging data corresponding to the corresponding main battery based on the main battery data, wherein the second charging data includes the maximum input voltage, maximum data current, and maximum input power allowed when charging the main battery; and then, the battery management and control unit controls the backup battery to perform emergency fast charging on the target main battery based on the second charging data until the power level of the main battery reaches twice the second power level standard or the remaining power of the backup battery is lower than the third power level standard;
[0085] When receiving the second control instruction, the battery control unit reads the collected backup battery data and obtains first charging data corresponding to the corresponding backup battery based on the data, where the first charging data includes charging voltage, charging current, charging power, etc.;
[0086] reading the remaining power of the corresponding backup battery, marking it as the backup power, comparing the obtained backup power with the fourth power standard, and if the backup power is not less than the fourth power standard, transmitting the charge recovered by the corresponding power recovery unit to the power device of the target vehicle for driving the vehicle, and at the same time appropriately adjusting the charge of the corresponding main battery;
[0087] If the reserve power is lower than the fourth power standard, it will be determined based on the obtained electric energy recovery data and the first charging data whether the recovered charge meets the charging standard for the reserve battery. If so, the corresponding reserve battery will be charged based on the recovered charge. If not, the corresponding charge will be transmitted to the power unit of the target vehicle.
[0088] The battery feedback module is used to monitor the battery control process and make feedback adjustments based on the monitoring results;
[0089] It should be further explained that, in a specific implementation process, the battery feedback module monitors the battery control process and performs feedback adjustment based on the monitoring results, including:
[0090] Based on the capture end, data of the backup battery in the corresponding control process is collected to obtain corresponding real-time backup battery data, and then based on the obtained real-time backup battery data, the float charge voltage corresponding to the corresponding backup battery is obtained and recorded as V;
[0091] in, ;
[0092] Where V1 is the real-time voltage of the backup battery; Tc is the temperature compensation coefficient; w represents the number of supercapacitor cells in the backup battery; and T represents the real-time temperature of the backup battery.
[0093] Constructing a two-dimensional rectangular coordinate system between time and float charge voltage, and mapping the real-time acquired float charge voltage into the two-dimensional rectangular coordinate system to obtain a corresponding float charge voltage change curve;
[0094] Set the float charge threshold range and map it to the float charge voltage variation curve;
[0095] If the float charge voltage change curve is within the float charge threshold range, no other operations are performed;
[0096] If the float charge voltage curve is outside the float charge threshold range, the backup battery is disconnected from the power unit and the main battery, meaning the main battery becomes the primary source of power to supply the vehicle's central isolation device. Simultaneously, a corresponding backup battery fault warning is generated and fed back to the control center.
[0097] It should be further explained that, in the specific implementation process, an embodiment of the present invention also includes: the battery feedback module reads the main battery data corresponding to the main battery in real time, and uses the same method to perform real-time health assessment on the main battery. If the monitoring and assessment results determine that the corresponding main battery is in a poor state, the corresponding control center will feedback a main battery fault warning. At the same time, based on the battery management and control unit, the connection status between the corresponding main battery and the vehicle power unit will be disconnected, and the corresponding backup battery will be used as the main power source to supply power to the target vehicle; and the fault time will be accumulated; if the accumulated fault time value does not exceed the preset time standard, no other operations will be performed; if the accumulated fault time value exceeds the preset time standard, the connection status between the corresponding supercapacitor and the vehicle power unit will be directly disconnected.
[0098] It should be further explained that the first power standard, the second power standard, the third power standard and the third power standard are all set by relevant staff based on actual needs;
[0099] like Figure 2 As shown, the control method of the backup battery includes the following steps:
[0100] Step 1: Collect data on the battery of the target vehicle to obtain corresponding battery information;
[0101] Step 2: Perform a health assessment on the corresponding vehicle battery based on the collected battery information, obtain the corresponding assessment results, and generate corresponding control instructions based on the assessment results;
[0102] Step 3: Perform battery control on the backup battery in the corresponding vehicle battery according to the generated control command;
[0103] Step 4: Monitor the battery control process and make feedback adjustments based on the monitoring results.
[0104] The above embodiments are only used to illustrate the technical method of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.
Claims
1. Backup battery control system, characterized in that, The control center includes a battery collection module, a battery processing module, a battery management and control module, and a battery feedback module. The battery acquisition module is used to collect data from the target vehicle's battery to obtain corresponding battery information. Specifically, the battery acquisition module is provided with a plurality of capture terminals, through which data from the vehicle battery is collected to obtain corresponding battery information; the battery information includes main battery data and backup battery data; the vehicle battery includes a main battery and a backup battery; The battery processing module is used to perform a health assessment on the corresponding vehicle battery based on the collected battery information, obtain a corresponding assessment result, and generate a corresponding control instruction based on the assessment result, specifically: reading the remaining power in the main battery data and marking it as a first power; Setting a first power threshold, comparing the obtained first power with the first power threshold, and generating corresponding control instructions according to the comparison result, the control instructions including a first control instruction and a second control instruction; The battery control module is used to perform battery control on the backup battery in the corresponding vehicle battery according to the generated control instruction; the battery control module is provided with a power recovery unit and a battery control unit; the power recovery unit is used to recover the power consumed by the target vehicle during driving and record the data to obtain corresponding electric energy recovery data, and the electric energy recovery data includes the charge amount and the recovered electric energy power; the battery control unit is used to perform corresponding battery control on the target backup battery according to the received control instruction, specifically: when receiving the first control instruction, the battery control unit obtains basic information of the vehicle, and obtains the vehicle demand power of the target vehicle in combination with the constructed vehicle demand model; Setting a first power and a second power based on the obtained vehicle required power, and simultaneously connecting the corresponding backup battery to a power device of the target vehicle; Reading the obtained regenerative charge and connecting it to the power unit of the target vehicle to obtain the corresponding regenerative power, and setting the first discharge power and the second discharge power based on the obtained regenerative power and the vehicle's required power; Applying the obtained first discharge power and second discharge power to the main battery and backup battery in the target vehicle respectively for discharge control; At the same time, the battery management and control unit sets a first charging power according to the obtained first discharge power and applies it to the backup battery, and at the same time performs charging management and control on the charging process of the corresponding main battery based on the first charging power; When receiving the second control instruction, the battery control unit reads the collected backup battery data and obtains the first charging data corresponding to the corresponding backup battery based on the data; Read the remaining power of the corresponding backup battery, mark it as the backup power, compare the obtained backup power with the power standard, and determine whether the corresponding regenerative charge meets the requirements for connecting to the backup battery based on the comparison result. If so, charge the corresponding backup battery based on the regenerative charge; if not, connect the corresponding regenerative charge to the power unit of the target vehicle; The battery feedback module is used to monitor the battery control process and make feedback adjustments based on the monitoring results.
2. The backup battery control system according to claim 1, characterized in that: The process of the battery processing module performing health assessment on the corresponding vehicle battery based on the collected battery information includes: Reading the collected backup battery data, wherein the backup battery data includes voltage, current, remaining power, and battery internal resistance; A two-dimensional rectangular coordinate system is constructed with the remaining power as the horizontal axis and the voltage and current of the main battery as the vertical axis. The collected backup battery data is mapped into the constructed two-dimensional rectangular coordinate system to obtain the corresponding battery change curve, which includes a voltage-power change curve and a current-power change curve. Setting a monitoring period, and dividing the monitoring period into a plurality of consecutive sub-periods; Reading the data group corresponding to the corresponding sub-cycle to obtain cycle data, obtaining the cycle resistance corresponding to the corresponding backup battery in the sub-cycle based on the obtained cycle data, and obtaining the health factor of the corresponding backup battery based on the obtained cycle resistance; A health threshold is set, and the obtained health coefficient is compared with the corresponding health threshold. If the health coefficient is not higher than the health threshold, the corresponding backup battery is in a poor state; if the health coefficient is higher than the health threshold, the corresponding backup battery is in a healthy state; Use the same method to conduct a health assessment on the target vehicle's main battery and take appropriate measures based on the assessment results; After the main battery health assessment is completed, the assessment results of the corresponding vehicle battery are obtained; if at least one of the main battery and the backup battery is in a poor condition, a corresponding fault warning is generated and fed back to the control center; If both the main battery and the backup battery are in a healthy state, the main battery data corresponding to the corresponding main battery is read and corresponding control instructions are generated based on the data.
3. The backup battery control system according to claim 2, characterized in that: The battery feedback module monitors the battery control process and performs feedback adjustment based on the monitoring results, including: Based on the capture end, data is collected on the backup battery in the corresponding control process to obtain corresponding real-time backup battery data, and then based on the obtained real-time backup battery data, a float charge voltage corresponding to the corresponding backup battery is obtained; Constructing a two-dimensional rectangular coordinate system between time and float charge voltage, and mapping the real-time float charge voltage into the two-dimensional rectangular coordinate system to obtain a corresponding float charge voltage change curve; Set the float charge threshold range and map it to the float charge voltage variation curve; If the float charge voltage change curve is within the float charge threshold range, no other operations will be performed; If the float charge voltage change curve is outside the float charge threshold range, the connection between the backup battery and the power unit and the main battery will be disconnected; at the same time, a corresponding backup battery fault warning will be generated and fed back to the control center.
4. The method of controlling a backup battery system according to any one of claims 1 to 3, characterized in that: The following steps are involved: Step 1: Collect data on the battery of the target vehicle to obtain corresponding battery information; Step 2: Perform a health assessment on the corresponding vehicle battery based on the collected battery information, obtain the corresponding assessment results, and generate corresponding control instructions based on the assessment results; Step 3: Perform battery control on the backup battery in the corresponding vehicle battery according to the generated control command; Step 4: Monitor the battery control process and make feedback adjustments based on the monitoring results.
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