Multi-battery charging management method and system

Abstract

The invention relates to the technical field of battery management, and discloses a multi-battery charging management method and system, and the method comprises the steps: obtaining the battery information of a plurality of batteries; and based on the battery information of each battery, circularly determining a preferential charging battery in the plurality of batteries, charging the preferential charging battery, and after the preferential charging battery is charged, updating the preferential charging battery until the plurality of batteries are charged. Only one battery is charged each time, the batteries to be charged do not need to be frequently switched, and the safety of the charging system is improved; a plurality of batteries are charged in sequence in a mode of charging one battery each time, so that the charging cost can be effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of battery management, and in particular to a multi-battery charging management method and system. Background Art

[0002] With the development of electronic technology, the scope of battery use has gradually expanded, and rechargeable batteries have been widely used in various industries and environments. Rechargeable batteries can be recharged to replenish electricity after the power is exhausted, so as to achieve repeated use.

[0003] For charging systems that use the same charger to charge multiple rechargeable batteries, the same charging device is often used to charge multiple rechargeable batteries at the same time. However, due to the charging performance problems of each rechargeable battery during the charging process, the charging system will be repeatedly switched on and off, causing the charging relay to repeatedly close and open, affecting the battery life. Moreover, when charging multiple rechargeable batteries at the same time, there will also be problems of mutual charging and discharging between batteries, which may cause safety accidents such as battery fire and explosion in serious cases. Summary of the invention

[0004] The present invention provides a multi-battery charging management method and system, which can reduce charging costs and improve the safety of the charging system.

[0005] In order to solve the above technical problems, the present invention provides a multi-battery charging management method, comprising:

[0006] Get battery information of several batteries;

[0007] Based on the battery information of each of the batteries, a priority charging battery is determined among the plurality of batteries in a cycle, the priority charging battery is charged, and after the priority charging battery is completely charged, the priority charging battery is updated until all of the plurality of batteries are completely charged.

[0008] The present invention obtains battery information of multiple batteries, determines a priority charging battery among multiple batteries by analyzing the battery information of each battery, and charges the priority charging battery. When the priority charging battery is fully charged, the priority charging battery is reselected to achieve charging one battery at a time without frequently switching the battery to be charged, thereby improving the safety of the charging system. The present invention charges multiple batteries in sequence by charging one battery at a time, which can effectively reduce the charging cost.

[0009] Further, the determining of a priority charging battery among the plurality of batteries and charging the priority charging battery specifically comprises:

[0010] Determining a number of batteries to be charged that meet charging conditions according to the battery information of each of the batteries;

[0011] Determining a priority charging battery among the plurality of batteries to be charged;

[0012] Charging the priority charging battery, and monitoring the real-time voltage of the priority charging battery in real time during the charging process of the priority charging battery;

[0013] When the real-time voltage of the priority charging battery reaches the preset full-charge voltage, it is determined that the charging of the priority charging battery is completed.

[0014] Further, the determining of a number of batteries to be charged that meet the charging conditions according to the battery information of each of the batteries is specifically:

[0015] According to the battery information of each battery, the fault protection information, the cell voltage difference and the real-time voltage of each battery are obtained;

[0016] determining whether the fault protection function is normal according to the fault protection information;

[0017] A battery with a normal fault protection function, a cell voltage difference meeting a preset voltage difference condition, and a real-time voltage less than a preset full-charge voltage is determined as a battery to be charged.

[0018] Further, the step of determining a battery to be charged with priority among the plurality of batteries to be charged is specifically as follows:

[0019] The real-time voltages of the batteries to be charged are compared, and the battery with the highest real-time voltage is determined as the priority charging battery.

[0020] Further, charging the priority rechargeable battery is specifically:

[0021] Obtaining battery information of the priority charging battery;

[0022] Determining a charging current of the priority charging battery according to the battery information of the priority charging battery;

[0023] The priority charging battery is charged according to the charging current.

[0024] Accordingly, the present invention provides a multi-battery charging management system, comprising: a charging device, a charging control device and a plurality of batteries;

[0025] The charging control device obtains battery information of several of the batteries; based on the battery information of each of the batteries, cyclically determines a priority charging battery among the several batteries, controls the charging device to charge the priority charging battery, and after the priority charging battery is charged, updates the priority charging battery until the several batteries are fully charged.

[0026] The multi-battery charging management system of the present invention includes a charging device, a charging control device and multiple batteries. The charging control device is used to obtain battery information of multiple batteries, and determine a priority charging battery among multiple batteries by analyzing the battery information of each battery. After determining the priority charging battery, the charging device is controlled to charge the priority charging battery. When the priority charging battery is charged, the charging control device reselects the priority charging battery and charges the reselected priority charging battery, so as to charge one battery at a time without frequently switching the battery to be charged, thereby improving the safety of the charging system. The present invention charges multiple batteries in sequence by charging one battery at a time, which can effectively reduce the charging cost.

[0027] Furthermore, the charging control device comprises: a charging management module, a charging control logic module and a plurality of relay switches;

[0028] The charging management module is used to obtain battery information of a plurality of batteries; determine a plurality of batteries to be charged that meet charging conditions according to the battery information of each of the batteries; determine a priority charging battery among the plurality of batteries to be charged; generate a switch control signal according to the priority charging battery; and transmit the battery information of the priority charging battery to the charging device;

[0029] The charging control logic module is used to obtain the switch control signal; turn on the relay switch corresponding to the priority charging battery according to the switch control signal; generate a drive signal according to the switch control signal, and transmit the drive signal to the priority charging battery.

[0030] Further, the charging control logic module includes: a switch sub-control module;

[0031] The switch sub-control module is used to obtain the switch control signal; and turn on the corresponding relay switch according to the switch control signal;

[0032] If the switch control signal is to control two or more relay switches to turn on, the switch sub-control module only turns on the preset first relay switch.

[0033] Furthermore, the charging device comprises: a power supply module and a charging management module;

[0034] The charging management module is used to receive the battery information of the priority charging battery; and determine the charging current of the priority charging battery according to the battery information of the priority charging battery;

[0035] The power supply module is used to charge the priority charging battery according to the charging current.

[0036] Furthermore, the battery comprises: a battery information management module, a MOS switch and a battery cell;

[0037] The battery information management module is used to receive the driving signal and control the opening and closing of the MOS switch according to the driving signal;

[0038] The output end of the MOS switch is electrically connected to the positive electrode of the battery cell; the negative electrode of the battery cell is grounded;

[0039] When the MOS switch is turned on, the battery cell receives the charging current. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 A schematic diagram of a flow chart of an embodiment of a multi-battery charging management method provided by the present invention;

[0041] Figure 2 A schematic diagram of the structure of an embodiment of a multi-battery charging management system provided by the present invention;

[0042] Figure 3 A schematic structural diagram of another embodiment of a multi-battery charging management system provided by the present invention;

[0043] Figure 4 A schematic diagram of the structure of an embodiment of a switch sub-control module provided by the present invention;

[0044] Figure 5 A schematic diagram of a truth value representation of the switch sub-control module provided by the present invention;

[0045] Figure 6 A schematic structural diagram of another embodiment of the multi-battery charging management system provided by the present invention. DETAILED DESCRIPTION

[0046] 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.

[0047] The flowcharts shown in the accompanying drawings are only examples and do not necessarily include all the contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps may also be decomposed, combined or partially merged, so the actual execution order may change according to actual conditions.

[0048] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0049] Example 1

[0050] like Figure 1 FIG. 1 is a flow chart of an embodiment of a multi-battery charging management method provided by the present invention. The method includes steps 101 to 102, and each step is specifically as follows:

[0051] Step 101: Obtain battery information of a plurality of batteries.

[0052] Step 102: Based on the battery information of each of the batteries, determine a priority charging battery among the plurality of batteries in a cycle, charge the priority charging battery, and after the priority charging battery is fully charged, update the priority charging battery until all of the plurality of batteries are fully charged.

[0053] In the embodiment of the present invention, the battery information of multiple batteries can determine the priority charging battery among the multiple batteries by analyzing the battery information of each battery, and charge the priority charging battery. During the charging process of the priority charging battery, the real-time voltage of the priority charging battery will change, and correspondingly, the battery information of the priority charging battery will also change. When the priority charging battery is completely charged, the priority charging battery is reselected according to the battery information of each battery, and the reselected priority charging battery is charged to complete the charging of multiple batteries.

[0054] In the embodiment of the present invention, by selecting a priority charging battery, only charging the priority charging battery each time, one battery can be quickly fully charged, thereby improving the charging efficiency. By charging one battery each time, there is no need to frequently switch the battery to be charged, thereby improving the safety of the charging system. The present invention charges multiple batteries in sequence using one charging device by charging one battery at a time, thereby effectively reducing the charging cost.

[0055] Example 2

[0056] like Figure 1 FIG. 1 is a flow chart of an embodiment of a multi-battery charging management method provided by the present invention. The method includes steps 101 to 102, and each step is specifically as follows:

[0057] Step 101: Obtain battery information of a plurality of batteries.

[0058] Step 102: Based on the battery information of each of the batteries, determine a priority charging battery among the plurality of batteries in a cycle, charge the priority charging battery, and after the priority charging battery is fully charged, update the priority charging battery until all of the plurality of batteries are fully charged.

[0059] In the embodiment of the present invention, the battery information of multiple batteries can determine the priority charging battery among the multiple batteries by analyzing the battery information of each battery, and charge the priority charging battery. During the charging process of the priority charging battery, the real-time voltage of the priority charging battery will change, and correspondingly, the battery information of the priority charging battery will also change. When the priority charging battery is completely charged, the priority charging battery is reselected according to the battery information of each battery, and the reselected priority charging battery is charged to complete the charging of multiple batteries.

[0060] In the embodiment of the present invention, by selecting a priority charging battery, only charging the priority charging battery each time, one battery can be quickly fully charged, thereby improving the charging efficiency. By charging one battery each time, there is no need to frequently switch the battery to be charged, thereby improving the safety of the charging system. The present invention charges multiple batteries in sequence using one charging device by charging one battery at a time, thereby effectively reducing the charging cost.

[0061] Further, in an embodiment of the present invention, a priority charging battery is determined among the plurality of batteries, and the priority charging battery is charged, specifically:

[0062] Determining a number of batteries to be charged that meet charging conditions according to the battery information of each of the batteries;

[0063] Determining a priority charging battery among the plurality of batteries to be charged;

[0064] Charging the priority charging battery, and monitoring the real-time voltage of the priority charging battery in real time during the charging process of the priority charging battery;

[0065] When the real-time voltage of the priority charging battery reaches the preset full-charge voltage, it is determined that the charging of the priority charging battery is completed.

[0066] In an embodiment of the present invention, a priority charging battery is determined among multiple batteries. First, a battery to be charged that meets the charging conditions is determined among the multiple batteries, and then a priority charging battery is determined among the multiple batteries to be charged. After the priority charging battery is determined, the priority charging battery is charged, and the real-time voltage of the priority charging battery is monitored in real time during the charging process of the priority charging battery. When the real-time voltage of the priority charging battery reaches the full-charge voltage corresponding to the priority charging battery, it is determined that the charging of the priority charging battery is completed.

[0067] Further, in an embodiment of the present invention, a number of batteries to be charged that meet the charging conditions are determined according to the battery information of each of the batteries, specifically:

[0068] According to the battery information of each battery, the fault protection information, the cell voltage difference and the real-time voltage of each battery are obtained;

[0069] determining whether the fault protection function is normal according to the fault protection information;

[0070] A battery with a normal fault protection function, a cell voltage difference meeting a preset voltage difference condition, and a real-time voltage less than a preset full-charge voltage is determined as a battery to be charged.

[0071] In an embodiment of the present invention, by acquiring the battery information of each battery, the fault protection information, cell voltage difference and real-time voltage of each battery can be obtained. The fault protection information of the battery is used to determine whether the fault protection function of the battery is normal. The cell voltage difference is used to determine whether the preset pressure difference condition is met. The real-time voltage is used to determine whether the battery has sufficient power and whether it needs to be charged. When it is monitored that the fault protection function of the battery is normal, the cell voltage difference meets the preset pressure difference condition, and the real-time voltage is less than the preset full-charge voltage, the battery is determined to be a battery to be charged.

[0072] Further, in an embodiment of the present invention, determining a battery to be charged with priority among the plurality of batteries to be charged is specifically as follows:

[0073] The real-time voltages of the batteries to be charged are compared, and the battery with the highest real-time voltage is determined as the priority charging battery.

[0074] In the embodiment of the present invention, the battery with the highest real-time voltage is selected as the priority charging battery among the batteries to be charged. Prioritizing charging the battery with the high real-time voltage can realize full charging of one battery in the shortest time, so the battery with the highest real-time voltage can be determined as the priority charging battery.

[0075] Furthermore, in an embodiment of the present invention, charging the priority rechargeable battery is specifically performed as follows:

[0076] Obtaining battery information of the priority charging battery;

[0077] Determining a charging current of the priority charging battery according to the battery information of the priority charging battery;

[0078] The priority charging battery is charged according to the charging current.

[0079] In the embodiment of the present invention, after the priority charging battery is determined, the charging current of the priority charging battery can be determined according to the battery information of the priority charging battery, and thus the corresponding charging current is allocated to the priority charging battery to realize charging of the priority charging battery.

[0080] In the embodiment of the present invention, when the priority charging battery completes charging, the real-time voltage of the priority charging battery reaches the corresponding full-charge voltage threshold, and its battery information is updated in real time according to the change of the real-time voltage. When the real-time voltage of the priority charging battery reaches the corresponding full-charge voltage threshold, the priority charging battery does not meet the charging conditions of the battery to be charged. At this time, the priority charging battery is reselected according to the battery information of other batteries, and the reselected priority charging battery is charged. By charging the priority charging battery in a cycle, the charging of multiple batteries can be completed.

[0081] In summary, the embodiment of the present invention provides a multi-battery charging management method, which obtains battery information of multiple batteries, determines a priority charging battery among multiple batteries by analyzing the battery information of each battery, and charges the priority charging battery. When the priority charging battery is fully charged, the priority charging battery is reselected to achieve charging one battery at a time without frequently switching the battery to be charged, thereby improving the safety of the charging system. The present invention charges multiple batteries in sequence by charging one battery at a time, which can effectively reduce the charging cost.

[0082] Example 3

[0083] See also Figure 2 , is a structural schematic diagram of an embodiment of a multi-battery charging management system provided by the present invention, the system includes a charging device, a charging control device and a plurality of batteries;

[0084] The charging control device obtains battery information of several of the batteries; based on the battery information of each of the batteries, cyclically determines a priority charging battery among the several batteries, controls the charging device to charge the priority charging battery, and after the priority charging battery is charged, updates the priority charging battery until the several batteries are fully charged.

[0085] In the first embodiment of the present invention, a multi-battery charging management system is composed of a charging device, a charging control device and a plurality of batteries. The charging device is connected to the charging control device, and the charging control device is connected to the charging device. The charging control device is used to obtain battery information of a plurality of batteries, and determine a priority charging battery among a plurality of batteries by analyzing the battery information of each battery. After determining the priority charging battery, the charging device is controlled to charge the priority charging battery. When the priority charging battery is charged, the charging control device reselects the priority charging battery and charges the reselected priority charging battery, so as to charge one battery at a time without frequently switching the battery to be charged, thereby improving the safety of the charging system. The present invention charges a plurality of batteries in sequence by charging one battery at a time, which can effectively reduce the charging cost.

[0086] Example 4

[0087] See also Figure 2 , is a structural schematic diagram of an embodiment of a multi-battery charging management system provided by the present invention, the system includes a charging device, a charging control device and a plurality of batteries;

[0088] The charging control device obtains battery information of several of the batteries; based on the battery information of each of the batteries, cyclically determines a priority charging battery among the several batteries, controls the charging device to charge the priority charging battery, and after the priority charging battery is charged, updates the priority charging battery until the several batteries are fully charged.

[0089] In the first embodiment of the present invention, a multi-battery charging management system is composed of a charging device, a charging control device and a plurality of batteries. The charging device is connected to the charging control device, and the charging control device is connected to the charging device. The charging control device is used to obtain battery information of a plurality of batteries, and determine a priority charging battery among a plurality of batteries by analyzing the battery information of each battery. After determining the priority charging battery, the charging device is controlled to charge the priority charging battery. When the priority charging battery is charged, the charging control device reselects the priority charging battery and charges the reselected priority charging battery, so as to charge one battery at a time without frequently switching the battery to be charged, thereby improving the safety of the charging system. The present invention charges a plurality of batteries in sequence by charging one battery at a time, which can effectively reduce the charging cost.

[0090] See also Figure 3 , is a schematic diagram of the structure of another embodiment of the multi-battery charging management system provided by the present invention. Figure 3 Describe the multi-battery charging management system:

[0091] In the first embodiment of the present invention, the charging control device includes: a charging management module, a charging control logic module and a plurality of relay switches;

[0092] The charging management module is used to obtain battery information of a plurality of batteries; determine a plurality of batteries to be charged that meet charging conditions according to the battery information of each of the batteries; determine a priority charging battery among the plurality of batteries to be charged; generate a switch control signal according to the priority charging battery; and transmit the battery information of the priority charging battery to the charging device;

[0093] The charging control logic module is used to obtain the switch control signal; turn on the relay switch corresponding to the priority charging battery according to the switch control signal; generate a drive signal according to the switch control signal, and transmit the drive signal to the priority charging battery.

[0094] In an embodiment of the present invention, the charging device includes: a power supply module and a charging management module;

[0095] The charging management module is used to receive the battery information of the priority charging battery; and determine the charging current of the priority charging battery according to the battery information of the priority charging battery;

[0096] The power supply module is used to charge the priority charging battery according to the charging current.

[0097] In an embodiment of the present invention, the battery includes: a battery information management module, a MOS switch and a battery cell;

[0098] The battery information management module is used to receive the driving signal and control the opening and closing of the MOS switch according to the driving signal;

[0099] The output end of the MOS switch is electrically connected to the positive electrode of the battery cell; the negative electrode of the battery cell is grounded;

[0100] When the MOS switch is turned on, the battery cell receives the charging current.

[0101] In the embodiment of the present invention, it is assumed that there are three batteries in the charging management method, and correspondingly, the charging control device has three relay switches. The power supply module in the charging device is connected to relay switch 1, relay switch 2 and relay switch 3 in the charging control device at the same time, and the power supply module can charge battery 1, battery 2 and battery 3 through the relay. The charging control logic circuit is connected to relay switch 1, relay switch 2 and relay switch 3 respectively. The charging management module is connected to the charging control logic circuit. The MOS switch of each battery is connected to the corresponding relay switch, the battery cell is connected to the MOS switch, the battery information management module is connected to the MOS switch, and each battery information management module is connected to the charging management module.

[0102] In an embodiment of the present invention, the MOS switch in the battery is composed of two groups of back-to-back N-MOS, the drains of the two groups of N-MOS are connected, the source of one group of N-MOS is connected to the positive electrode of the battery cell, and the source of the other group of N-MOS is connected to the relay switch, the CAN communication interface of the battery information management module is connected to the CAN communication interface of the charging management module, the IO port of the MCU inside the battery information management module is connected to the gate of the MOS switch through the MOS tube drive circuit, and the negative electrode of the battery cell is connected to the ground of the charging control module and the ground of the charging device to form a complete current loop.

[0103] The working principle of the multi-battery charging management system of the embodiment of the present invention is as follows: the power supply management module is connected to the power supply module, the power supply module charges the battery after passing through the relay switch, and the power supply management module is responsible for reading the battery information, thereby controlling the power supply module to allocate appropriate current to charge the battery. The charging management module of the charging control module is responsible for reading the battery information, evaluating the priority of each battery, determining the priority charging battery, and sending a switch control signal to the charging control logic module. After the charging control logic module obtains the switch control signal, it opens the relay switch corresponding to the priority charging battery according to the switch control signal, and generates a drive signal, and sends the drive signal to the priority charging battery. The charging management module also forwards the battery information of the priority charging battery to the power supply management module of the charging device, so that the power supply management sends the charging current corresponding to the priority charging battery. The battery information management module in the battery is responsible for detecting the voltage, current, temperature and other information of the battery cell and the battery cell group, generating battery information, and sending the battery information to the charging management module or the power supply management module. After receiving the drive signal sent by the charging control logic module, the battery information management opens or closes the MOS switch according to the drive signal, and the MOS switch is responsible for turning on or off the connection between the battery cell and the external charging device or the power receiving device.

[0104] In an embodiment of the present invention, after the priority charging battery is completed, the power supply management module ends the charging and sends a charging completion instruction to the charging management module. The charging management module obtains the charging completion information of the power supply management module, sends a shutdown instruction to the fully charged battery, and indicates that the battery is fully charged through an LED indicator. After receiving the shutdown instruction, the battery BMS management module turns off the MOS switch. After the current priority charging battery is completed, the charging control module re-determines whether there are batteries to be charged that meet the charging conditions, and reselects the priority charging battery from the batteries to be charged, and charges the reselected priority charging battery, and repeats this cycle until all batteries are charged or the charging device is powered off, and the process ends.

[0105] In an embodiment of the present invention, the charging control logic module includes: a switch sub-control module;

[0106] The switch sub-control module is used to obtain the switch control signal; and turn on the corresponding relay switch according to the switch control signal;

[0107] If the switch control signal is to control two or more relay switches to turn on, the switch sub-control module only turns on the preset first relay switch.

[0108] In the embodiment of the present invention, the charging management module opens the relay of the battery through the charging control logic module, and controls to avoid opening the three relays at the same time, which causes the batteries to charge and discharge each other.

[0109] In the embodiment of the present invention, the switch sub-control module in the charging control logic module is composed of a plurality of NAND gates, and the plurality of input terminals of the switch sub-control module are respectively connected to the charging management module, and the plurality of output terminals of the switch sub-control module are respectively connected to the plurality of battery relay switch drive circuits. No matter what signal is received by each input terminal of the switch sub-control module, only one of the plurality of output terminals outputs a high level, so that the relay corresponding to the output terminal is turned on, that is, only one relay is turned on, thereby ensuring that when the MCU program runs away or the program is bugged, only one relay is turned on, preventing the batteries from charging and discharging each other, causing the batteries to age quickly or thermally run away, and ensuring the safety of the batteries and the equipment.

[0110] See also Figure 4 , is a structural diagram of an embodiment of the switch sub-control module provided by the present invention. Assume that there are 3 batteries in the multi-battery charging management system. Then the switch sub-control module has 3 input terminals, namely S1, S2 and S3, which are respectively connected to the 3 IO ports (IO1, IO2 and IO3) of the MCU of the charging management module. Specifically, S1 is connected to IO1, S2 is connected to IO2, and S3 is connected to IO3. The switch sub-control module has 3 output terminals, namely B1, B2 and B3. B1 is connected to relay switch 1, B2 is connected to relay switch 2, and B3 is connected to relay switch 3. The working logic of the switch sub-control module is: if IO1 of the MCU of the charging management module transmits a high level, that is, S1 receives a high level, then S2 and S3, regardless of high or low, only output a high level in B1, thereby turning on relay switch 1. If IO1 outputs a low level and IO2 outputs a high level, then IO3, regardless of high or low, only outputs a high level in B2, thereby turning on relay switch 2. If IO1 and IO2 both output low level and IO3 outputs high level, only B3 outputs high level, thereby turning on relay switch 3. If IO1, IO2 and IO3 all output low level, B1, B2 and B3 all output low level, and no relay is turned on.

[0111] See also Figure 5 , is a truth representation diagram of the switch sub-control module provided by the present invention. Figure 5 0 represents low level, 1 represents high level, and X represents low level or high level. No matter what kind of input the switch sub-control module receives, only one of the three output terminals B1, B2 and B3 of the switch sub-control module has a high level output, that is, only one relay is turned on. Even if IO1, IO2, and IO3 are pulled high at the same time, only B1 outputs a high level, that is, only relay switch 1 is turned on, thereby ensuring that only one relay is turned on when the MCU program runs away or the program is bugged, preventing multiple relays from being turned on at the same time, preventing the batteries from being charged and discharged with large currents, causing rapid battery aging or thermal runaway, and ensuring the safety of batteries and equipment.

[0112] In the embodiments of the present invention, see Figure 6 , a schematic diagram of the structure of another embodiment of the multi-battery charging management system provided by the present invention. The multi-battery charging management system also includes a system voltage-stabilized power supply. The power supply module is connected to the power supply circuit inside the charging control module through the system voltage-stabilized power supply, and is responsible for supplying power to each module or component in the charging control device.

[0113] In summary, an embodiment of the present invention provides a multi-battery charging management system, which includes a charging device, a charging control device and multiple batteries. The charging control device is used to obtain battery information of multiple batteries, and determine a priority charging battery among multiple batteries by analyzing the battery information of each battery. After determining the priority charging battery, the charging device is controlled to charge the priority charging battery. When the priority charging battery is charged, the charging control device reselects the priority charging battery and charges the reselected priority charging battery, so as to charge one battery at a time without frequently switching the battery to be charged, thereby improving the safety of the charging system. The present invention charges multiple batteries in sequence by charging one battery at a time, which can effectively reduce the charging cost.

[0114] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. It is particularly pointed out that for those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A multi-battery charging management method, characterized in that: include: Get battery information of several batteries; Based on the battery information of each of the batteries, a priority charging battery is determined among the plurality of batteries in a cycle, the priority charging battery is charged, and after the priority charging battery is completely charged, the priority charging battery is updated until all of the plurality of batteries are completely charged.

2. The multi-battery charging management method according to claim 1, characterized in that: The step of determining a priority charging battery among the plurality of batteries and charging the priority charging battery specifically comprises: Determining a number of batteries to be charged that meet charging conditions according to the battery information of each of the batteries; Determining a priority charging battery among the plurality of batteries to be charged; Charging the priority charging battery, and monitoring the real-time voltage of the priority charging battery in real time during the charging process of the priority charging battery; When the real-time voltage of the priority charging battery reaches the preset full-charge voltage, it is determined that the charging of the priority charging battery is completed.

3. The multi-battery charging management method according to claim 2, characterized in that: The determining of a plurality of batteries to be charged that meet charging conditions according to the battery information of each of the batteries is specifically: According to the battery information of each battery, the fault protection information, the cell voltage difference and the real-time voltage of each battery are obtained; determining whether the fault protection function is normal according to the fault protection information; A battery with a normal fault protection function, a cell voltage difference meeting a preset voltage difference condition, and a real-time voltage less than a preset full-charge voltage is determined as a battery to be charged.

4. The multi-battery charging management method according to claim 2, characterized in that: The step of determining a battery to be charged first among the plurality of batteries to be charged is specifically as follows: The real-time voltages of the batteries to be charged are compared, and the battery with the highest real-time voltage is determined as the priority charging battery.

5. The multi-battery charging management method according to claim 2, characterized in that: The charging of the priority rechargeable battery is specifically: Obtaining battery information of the priority charging battery; Determining a charging current of the priority charging battery according to the battery information of the priority charging battery; The priority charging battery is charged according to the charging current.

6. A multi-battery charging management system, characterized in that: include: Charging equipment, charging control equipment and several batteries; The charging control device obtains battery information of a plurality of the batteries; Based on the battery information of each battery, a priority charging battery is determined among the plurality of batteries in a cycle, the charging device is controlled to charge the priority charging battery, and after the priority charging battery is fully charged, the priority charging battery is updated until all the plurality of batteries are fully charged.

7. The multi-battery charging management system according to claim 6, characterized in that: The charging control device comprises: a charging management module, a charging control logic module and a plurality of relay switches; The charging management module is used to obtain battery information of a plurality of batteries; determine a plurality of batteries to be charged that meet charging conditions according to the battery information of each of the batteries; determine a priority charging battery among the plurality of batteries to be charged; generate a switch control signal according to the priority charging battery; and transmit the battery information of the priority charging battery to the charging device; The charging control logic module is used to obtain the switch control signal; turn on the relay switch corresponding to the priority charging battery according to the switch control signal; generate a drive signal according to the switch control signal, and transmit the drive signal to the priority charging battery.

8. The multi-battery charging management system according to claim 7, characterized in that: The charging control logic module includes: a switch sub-control module; The switch sub-control module is used to obtain the switch control signal; and turn on the corresponding relay switch according to the switch control signal; If the switch control signal is to control two or more relay switches to turn on, the switch sub-control module only turns on the preset first relay switch.

9. The multi-battery charging management system according to claim 8, characterized in that: The charging device comprises: a power supply module and a charging management module; The charging management module is used to receive the battery information of the priority charging battery; and determine the charging current of the priority charging battery according to the battery information of the priority charging battery; The power supply module is used to charge the priority charging battery according to the charging current.

10. The multi-battery charging management system according to claim 9, characterized in that: The battery comprises: a battery information management module, a MOS switch and a battery cell; The battery information management module is used to receive the driving signal and control the opening and closing of the MOS switch according to the driving signal; The output end of the MOS switch is electrically connected to the positive electrode of the battery cell; the negative electrode of the battery cell is grounded; When the MOS switch is turned on, the battery cell receives the charging current.

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