WO2022100083A1

WO2022100083A1 - Charging system and charging method thereof

Info

Publication number: WO2022100083A1
Application number: PCT/CN2021/098684
Authority: WO
Inventors: 杨新新; 叶剑; 李征龙; 蒋顺民; 翟骏马
Original assignee: 杭州铅锂智行科技有限公司
Priority date: 2020-11-16
Filing date: 2021-06-07
Publication date: 2022-05-19
Also published as: CN114094648A; CN114084270A; CN113734342A; CN114084271A; CN113746157A; CN113765174A; CN114084269A; CN113353191A

Abstract

The present invention relates to a charging system, comprising a charging and discharging battery and a charger, wherein the charging and discharging battery comprises a storage unit, the storage unit being used for storing discharging termination voltage information of the charging and discharging battery; and the charger is used for charging the charging and discharging battery by means of a suitable charging program according to the information in the storage unit. Further disclosed is a charging method. By means of the charging system and the charging method thereof in the present invention, a battery can be effectively charged.

Description

A charging system and charging method thereof

technical field

The present invention relates to the field of charging.

Background technique

At present, in the process of charging electric bicycle batteries, a charging program is usually set in the charger. The current charging program is basically three-stage charging, that is, high-current constant current charging, constant voltage charging and the final buffer charging stage. The three-stage charging of the battery can quickly fully charge the battery. Since the charger does not recognize the battery, the same charging procedure is used for different battery models and different battery states. affect battery life.

SUMMARY OF THE INVENTION

In order to solve the above technical problems, the present invention provides a charging system including a charging and discharging battery and a charger, characterized in that, the charging and discharging battery includes a storage unit, and the storage unit is used for storing the discharge of the charging and discharging battery. After the termination voltage information, the charger charges the charging and discharging battery with a suitable charging procedure according to the information in the storage unit.

Further, the storage unit further stores the discharge amount information of the charge and discharge battery.

Further, the charger and the charge-discharge battery acquire the discharge amount information and the discharge termination voltage information in the storage unit through wired connection or wireless connection.

Further, the discharge amount information and discharge termination voltage information in the storage unit are transmitted to the cloud server through the user communication terminal, and the charger obtains the discharge amount information and discharge termination voltage information in the storage unit from the cloud server. After the voltage information or the cloud server matches the charging program, the charger obtains the charging program from the cloud server.

The present invention also protects a charging method for a charging system, an electric vehicle charging system and a charging method thereof, and a charging battery.

The charging system and the charging method thereof of the present invention can effectively charge the battery.

Description of drawings

1 is a schematic diagram of the charging system of the present invention applied to an electric vehicle;

2 is a circuit block diagram of the charging system of the present invention applied to an electric vehicle;

Fig. 3 is the working flow chart of the charging system of the present invention applied to the electric vehicle;

FIG. 4 is a charging flow chart of the charging system of the present invention.

Detailed ways

The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

As shown in FIG. 1, a schematic diagram of the application of the charging system of the present invention to an electric vehicle, an electric vehicle charging system includes an electric vehicle 1, a charging and discharging battery 2 installed on the electric vehicle, and the charging and discharging battery 2 is used for charging the electric vehicle. 1 for power supply, and a charger 7 for charging the charging and discharging battery 2 . The charging and discharging battery 2 and the charger 7 constitute the charging system of the present invention.

As shown in FIG. 2 , the charge-discharge battery 2 includes a storage unit 3 , a central processing unit 4 , a current detection unit 5 , a voltage detection unit 10 , the current detection unit 5 , the voltage detection unit 10 and the storage unit 3 are respectively electrically connected to the central processing unit 4 When the charging and discharging battery 2 is electrically connected to the electric vehicle 1 and is being discharged, the current detection unit 5 can detect the discharge current of the charging and discharging battery 2 . When the charge-discharge battery 2 is discharged, the central processing unit 4 performs the current-time integral operation on the discharge current and the discharge time of the charge-discharge battery 2 to obtain the current-time integral operation value, that is, the discharge amount, and integrates the current-time integration operation value information, namely The discharge amount information is stored in the storage unit 3 . When the discharge of the charge and discharge battery 2 is terminated, the voltage detection unit 10 can detect the discharge end voltage of the charge and discharge battery 2 , and the central processing unit 4 stores the discharge end voltage information of the charge and discharge battery 2 in the storage unit 3 . In addition, the voltage detection unit 10 can also detect the initial discharge voltage of the charge-discharge battery 2 and the discharge termination voltage after continuous discharge, and the central processing unit 4 stores the unit-time voltage drop information of the charge-discharge battery 2 during continuous discharge in the storage unit 3. Preferably, the voltage drop information per unit time during the longest continuous discharge is stored in the storage unit 3 . When the charge-discharge battery 2 is discharged, if it is discharged at intervals, for example, after the electric vehicle 1 is charged, the electric vehicle 1 starts to ride for a period of time and then stops, and then rides for a period of time. At this time, the discharge of the charge-discharge battery 2 includes at least the first The continuous discharge time period, that is, the first ride, and the second continuous discharge period, that is, the second ride, the central processing unit 4 calculates the continuous discharge current time integral value of the first continuous discharge time period, that is, the first continuous discharge period. Discharge amount, and store the continuous discharge current time integral value information of the first continuous discharge time period in the storage unit 3. The storage method is: replace the current discharge amount information in the storage unit 3, stop for a period of time, and then ride for a while time, that is, the second continuous discharge time period. At this time, the central processing unit 4 calculates the continuous discharge current time integral value of the second continuous discharge time period, that is, the second continuous discharge amount, and compares the first continuous discharge amount with the second continuous discharge amount. The summation value information after the summation operation of the discharge capacity is stored in the storage unit 3. The storage method is, for example, replacing the current discharge capacity information in the storage unit 3, and the replaced discharge capacity information is the first continuous discharge capacity information. The storage unit 3 is used to store the sum of the integral operation values of all discharge currents and discharge time between the last two charges of the charge and discharge battery, that is, when the charge and discharge battery 2 is charged and starts to discharge, the discharge amount information in the storage unit 3 is stored. Re-storage and accumulative storage can be started until the next charging and then discharging, and the discharge amount information in the storage unit 3 will start to be re-stored and accumulatively stored again, and so on. Similarly, the discharge termination voltage information of the charge-discharge battery 2 after the first ride is stored in the storage unit 3. After stopping for a period of time, it stops after riding for a period of time. The charge-discharge battery 2 after the second ride The discharge termination voltage information is stored in the storage unit 3. Of course, the discharge termination voltage information of the charge and discharge battery 2 after the first ride can also be replaced, and this repeats until the storage unit 3 stores the last ride before charging. The end-of-discharge voltage information of the charge-discharge battery 2. It can also be that the unit time pressure drop information of the first ride of the charge-discharge battery 2 is stored in the storage unit 3. After stopping for a period of time, it stops after riding for a period of time, and the unit of the second ride of the charge-discharge battery 2 The time pressure drop information is stored in the storage unit 3, of course, the unit time pressure drop information of the charge and discharge battery 2 for the first ride can also be replaced, and this repeats until the storage unit 3 stores the unit time of the last ride. pressure drop information. If necessary, the discharge termination voltage information and the unit time voltage drop information may also be stored in the storage unit 3 at the same time. The voltage drop information per unit time indicates how fast the battery voltage drops during a period of discharge.

In addition to integrating the discharge current and the discharge time, the discharge capacity of the charge-discharge battery of the present invention can also be simply obtained by multiplying the discharge current and the unit time in units of 1 second or other corresponding time. The storage unit 3 of the present invention may also include storing other required discharge information as required, in addition to storing discharge amount information, discharge termination voltage information, and voltage drop information per unit time. The charger can charge the charge-discharge battery with a suitable charging procedure according to at least one of the discharge amount information, the discharge termination voltage information, and the voltage drop information per unit time.

The charge-discharge battery 2 also includes an information communication port 6, which is used to transmit the information in the storage unit 3, and the charger 7 includes a central processing unit 7a. When the charge-discharge battery 2 is in communication with the charger 7, charging is performed. The central processing unit 7a of the controller 7 forms a communication connection with the information communication port 6 and can obtain the discharge capacity information stored in the storage unit 3 of the charge and discharge battery 2 and the discharge termination voltage information of the charge and discharge battery 2, or the discharge capacity information and Information on the voltage drop per unit time of the charging and discharging battery 2 . The charger further includes a power display unit 8 , and the central processing unit 7 a controls the power display unit 8 according to the discharge amount information in the storage unit 3 to display the current remaining power of the currently charged and discharged battery 2 . The central processing unit 7a of the charger 7 can also control the charging unit 9 of the charger 7 to charge the charging and discharging battery 2 with a corresponding charging program according to the discharge amount information in the storage unit 3 and the discharge termination voltage information of the charging and discharging battery 2, That is to say, the charger 7 can charge the charging and discharging battery 2 with the same amount of electricity as the discharging amount of the charging and discharging battery 2, and can also charge the charging and discharging battery 2 with the electric power 1.05 times of the discharge amount of the charging and discharging battery 2 as required. Because the central processing unit 7a of the charger 7 can judge the type of the battery, that is, the rated voltage, rated capacity, etc. , so that the charging program whose charging voltage is slightly higher than the rated voltage of the charging and discharging battery can be selected for charging, that is, the charging program that conforms to the corresponding battery model can be charged, etc.; for the same reason, the central processing of the charger 7 The unit 7a can also control the charging unit 9 of the charger 7 to charge the charging and discharging battery 2 with a corresponding charging program according to the discharge amount information in the storage unit 3 and the unit time voltage drop information of the charging and discharging battery 2 . Of course, the central processing unit 7a of the charger 7 can also control the charging unit 9 of the charger 7 to charge the charging and discharging battery 2 only according to the discharge amount information in the storage unit 3 with a corresponding charging program, such as selecting an appropriate charging current and charging time etc. The communication connection between the central processing unit 7a of the charger 7 and the information communication port 6 of the storage unit 3 can be through interface contact or wireless connection such as Bluetooth, as long as information exchange and communication connection can be achieved.

The electric vehicle 1 includes a central processing unit 1a. When the charging and discharging battery 2 is in electrical communication with the electric vehicle 1, the central processing unit 1a of the electric vehicle 1 can form a wired or wireless communication connection with the information communication port 6 and can obtain the charging and discharging battery 2. The discharge amount information stored in the storage unit 3 of the The electric vehicle 1 also includes a motor and a user prompting unit. The central processing unit 1a is used to control the motor and the power display unit. The central processing unit 1a controls the user prompting unit according to the obtained discharge information in the storage unit 3, thereby prompting the rider of the current battery of electricity. Similarly, the communication connection between the central processing unit 1a of the electric vehicle 1 and the information communication port 6 of the storage unit 3 can be through interface contact, or through wireless connection such as Bluetooth, as long as information exchange and communication connection can be achieved.

The central processing unit 4, the current detection unit 5, and the voltage detection unit 10 of the charging and discharging battery 2 of the charging system of the present invention can also be arranged on the electric vehicle 1. When the charging and discharging battery 2 is electrically connected to the electric vehicle 1, the electric vehicle 1 The central processing unit 4, the current detection unit 5, and the voltage detection unit 10 on the The voltage drop information is stored in the storage unit 3 of the charge and discharge battery 2 . Of course, the storage unit 3 and the information communication port 6 can also be arranged on the electric vehicle 1 . When charging, the charger only needs to obtain the corresponding data on the electric vehicle 1 , which can also achieve the purpose of the present invention.

When the central processing unit 4 of the charge-discharge battery 2 is installed on the electric vehicle 1, it can be combined with the central processing unit 1a on the electric vehicle 1, that is, the central processing unit installed on the electric vehicle 1 can be used for Calculate and store the discharge amount of the charge-discharge battery 2 and the discharge termination voltage of the charge-discharge battery 2 or the discharge amount of the charge-discharge battery 2 and the voltage drop information per unit time of the charge-discharge battery 2, and obtain the information in the storage unit 3 of the charge-discharge battery 2 The discharge amount information is used to control the user prompt unit of the electric vehicle, which can reduce the production cost of the entire electric vehicle system. When the charger is charging the charging and discharging battery 2, the information in the storage unit 3 set on the electric vehicle 1 can be obtained in a wired manner through the information communication port 6 set on the electric vehicle. The charger can also be connected with the setting. The information communication port 6 on the electric vehicle realizes information communication with the storage unit 3 in a wireless manner, obtains the information in the storage unit 3 set on the electric vehicle 1, and performs charging according to the information according to the corresponding charging program. Of course, charging The device can also perform other functions such as battery display and other functions according to the information in it. If only to achieve the function of power display or alarm, the central processing unit on the electric vehicle 1 can also only calculate and store the discharge capacity of the charging and discharging battery 2, and use the discharge capacity information to control the user prompting unit of the electric vehicle. The storage unit 3 at the time may be a temporary storage.

Preferably, the storage unit 3 of the present invention can also store and save relevant information of the charge and discharge battery 2 when the power is turned off, such as: the discharge amount information of the charge and discharge battery 2, the discharge termination voltage information of the charge and discharge battery 2, Information on the voltage drop per unit time of the charging and discharging battery 2 . In this way, the charger can better obtain relevant information of the charging and discharging battery 2 .

The period between the last two charges of the charge-discharge battery in the present invention refers to the period between the last two charges when the charge-discharge battery is charged by the charger 7 of the present invention. The discharge capacity of the charging and discharging battery of the present invention is preferably the actual discharge capacity. During the riding process, the electric vehicle will be charged intermittently and instantaneously, that is, the power is not charged by an external charger, such as braking, etc. At this time, the first The storage of a continuous discharge amount can be the storage of the actual discharge amount. The actual discharge amount at this time is the discharge amount of the battery charged and discharged in this period minus the charge amount in this period of time, although the value of this charge amount is It is very small, but the actual discharge amount of the battery can be calculated more accurately, so as to achieve a more accurate human-computer interaction and charging effect, and ignoring the charging amount does not affect the purpose of the present invention. In addition, the storage unit 3 of the present invention may be arranged on the charge-discharge battery 2 in the following manner: for example, the storage unit 3 is arranged on the shell of the charge-discharge battery 2 and on the upper cover of the charge-discharge battery 2. If the charge-discharge battery 2 is a set of For batteries connected in series, the way that the storage unit 3 is arranged on the charge-discharge battery 2 may also be between the series-connected charge-discharge batteries. In this case, one storage unit 3 is preferably arranged.

In addition, the information communication connection of the storage unit 3 of the present invention will bring more freedom to the installation position of the storage unit through wireless communication. security.

As shown in FIG. 3 , the present invention also protects a charging method for an electric vehicle charging system. The electric vehicle charging system of the present invention includes a charger, a charging/discharging battery, and an electric vehicle equipped with a charging/discharging battery, including the steps of: starting, charging The controller 7 charges the charging and discharging battery 2. After the charging is stopped, the charging and discharging battery 2 is connected to the electric vehicle 1 and starts to discharge. The central processing unit calculates the discharge amount of the charging and discharging battery 2 and the discharge termination voltage of the charging and discharging battery 2, or is the discharge capacity of the charge-discharge battery 2 and the voltage drop per unit time of the charge-discharge battery 2 (not shown in the figure), and the storage unit 3 on the electric vehicle 1 or the charge-discharge battery 2 stores the discharge capacity information and charge-discharge capacity The end-of-discharge voltage information of the battery 2 or the information of the discharge amount of the charge-discharge battery 2 and the voltage drop information per unit time of the charge-discharge battery 2 are stored, and the charger 7 obtains the information in the storage unit 3 on the electric vehicle 1 or the charge-discharge battery 2 The charging and discharging battery 2 is charged according to the corresponding charging procedure. If the charge-discharge battery 2 is discharged multiple times at intervals, the information on the discharge amount of the charge-discharge battery 2 stored in the storage unit 3 is the sum information of the multiple discharge amounts. The information on the sum of the discharge capacity and the discharge termination voltage information of the charge-discharge battery 2 select the corresponding charging program to charge the charge-discharge battery 2, or the charger 7 obtains the sum of the multiple discharge amounts in the storage unit 3 on the charge-discharge battery 2. and information and the unit time voltage drop information of the charging and discharging battery 2 to charge the charging and discharging battery 2 according to the corresponding charging program, that is to say, the charger 7 can determine the model of the charging and discharging battery 2 based on the above information, so as to charge and discharge the battery 2 according to the corresponding charging procedure. The program charges the charging and discharging battery 2 . The present invention can also control the power display unit or the low power alarm unit of the electric vehicle according to the discharge amount information in the storage unit 3 on the electric vehicle 1 or the charge-discharge battery 2. At this time, the storage unit 3 can be a temporary storage. In the charging method of the electric vehicle charging system of the present invention, the charger can also charge the charging and discharging battery with a corresponding charging procedure only according to the discharge amount information in the storage unit on the charging and discharging battery.

As shown in FIG. 4, the charging method of the charging system of the present invention, the charging system includes a charger and a charging and discharging battery, and includes the following steps: at first, the charger is in communication with the charging and discharging battery for charging, and the charger obtains the memory of the charging and discharging battery. The discharge capacity information and discharge termination voltage information in the battery, or the discharge capacity information and unit time voltage drop information (not shown in the figure) in the storage of the charge and discharge battery are obtained. the charging procedure to charge the rechargeable battery. In the charging method of the charging system of the present invention, the charger can also charge the charging and discharging battery with a corresponding charging procedure only according to the discharge amount information in the storage unit on the charging and discharging battery.

In order to achieve better charging effect and accuracy of remaining power display or alarm, the present invention can perform temperature compensation on the discharge capacity of the charging and discharging battery.

In order to achieve a better charging effect, temperature compensation is performed on the discharge amount of the charging and discharging battery. Referring to the foregoing embodiment, the specific method is as follows. The electric vehicle includes a charging and discharging battery 2, and the charging and discharging battery 2 is also provided with a temperature detection unit. The central processing unit above calculates the discharge amount of the charge and discharge battery and performs temperature compensation calculation on the discharge amount of the charge and discharge battery according to the temperature of the charge and discharge battery detected by the temperature detection unit, and calculates the temperature of the charge and discharge battery after the temperature compensation calculation. The discharge capacity is stored in the storage unit. When the charger charges the charge and discharge battery, the charger can obtain the discharge capacity of the charge and discharge battery after temperature compensation calculation in the storage unit, that is, the charger calculates the charge and discharge capacity according to the temperature compensation calculation. The discharge capacity of the discharged battery is charged with an appropriate charging program; of course, the charger can also obtain the temperature information of the charge and discharge battery and the discharge capacity information of the charge and discharge battery by wire or wireless, and the charger performs temperature compensation calculation. The discharge capacity of the charge-discharge battery after the compensation calculation is charged with an appropriate charging program; the temperature information of the charge-discharge battery and the discharge capacity information of the charge-discharge battery can also be sent to the cloud server through the user communication terminal, and the cloud server performs temperature compensation calculation. , match the appropriate charging program, and send the matching charging program to the charger. The temperature compensation calculation method for the discharge capacity of the charge and discharge battery is as follows: when charging according to the detected discharge capacity of the charge and discharge battery, if the designed theoretical charge capacity is 105% of the detected discharge capacity of the charge and discharge battery, temperature compensation is performed. When calculating, detect the temperature of the charging and discharging battery. For example, the reference temperature of the rechargeable battery is set to 25 degrees Celsius. If the detected temperature of the charging and discharging battery is equal to the reference temperature, such as 25 degrees Celsius, the actual charging capacity of the charger is equal to the designed theoretical value. The charging capacity is 105% of the discharging capacity of the charging and discharging battery; if the detected temperature of the charging and discharging battery is greater than the reference temperature, such as 26 degrees Celsius, the actual charging capacity of the charger can be lower than the designed theoretical charging capacity, such as charging and discharging 104% of the battery's discharge capacity; if the detected temperature of the charge and discharge battery is lower than the reference temperature, such as 24 degrees Celsius, the actual charge capacity of the charger can be higher than the designed theoretical charge capacity, such as 106% of the discharge capacity of the charge and discharge battery %; that is, the actual charging capacity of the charger is calculated according to the discharge capacity of the charging and discharging battery after temperature compensation, and the specific compensation amount is calculated according to the difference between the actual temperature and the reference temperature. The discharge capacity of the discharged battery is negatively compensated, and if the temperature is lower than the reference temperature, the positive compensation is performed on the discharge capacity of the charge and discharge battery, so that the charger can use the appropriate charging program to charge the battery according to the discharge capacity information including the temperature compensation calculation. Charge and discharge the battery for charging, such as the appropriate current size of the charging program, the appropriate charging time, etc., so as to achieve an effective charging effect.

In order to achieve the accuracy of the remaining power display or alarm of the rechargeable battery, temperature compensation is performed on the discharge amount of the rechargeable battery. The specific method is as follows. The electric vehicle includes the rechargeable battery 2. The central processing unit above calculates the discharge amount of the charge and discharge battery and performs temperature compensation calculation on the discharge amount of the charge and discharge battery according to the temperature of the charge and discharge battery detected by the temperature detection unit. Quantity, control user prompt unit, such as: battery display unit or battery alarm unit. The discharge amount of the charge-discharge battery after temperature compensation calculation is preferably stored in the storage unit, and can be used as a basis for the charger to use different charging procedures. The temperature compensation calculation method for the discharge capacity of the charging and discharging battery is as follows: If the detected temperature of the charging and discharging battery is 25 degrees Celsius, which is equal to the reference temperature, for example, the remaining power displayed by the power display unit of the electric vehicle is the theoretical remaining power. The remaining power is the difference between the rated capacity of the charge and discharge battery minus the discharge capacity; then if the detected temperature of the charge and discharge battery is greater than the reference temperature, such as 26 degrees Celsius, the remaining power displayed by the power display unit of the electric vehicle is the charge. The difference obtained by subtracting 95% of the discharge capacity from the rated capacity of the discharged battery. At this time, the remaining capacity displayed by the electric vehicle's power display unit is greater than the theoretical remaining capacity; if the detected temperature of the charge and discharge battery is lower than the reference temperature, such as At 24 degrees Celsius, the remaining power displayed by the electric vehicle's power display unit is the difference obtained by subtracting 105% of the discharge capacity from the rated capacity of the charging and discharging battery. The remaining power displayed by the electric vehicle's power display unit is less than the theoretical remaining power. That is to say, if the temperature of the charging and discharging battery is higher than the reference temperature, the discharge amount of the charging and discharging battery will be compensated negatively. The unit displays the remaining power according to the discharge amount information calculated by temperature compensation. In order to achieve the accuracy of the remaining power display or alarm of the rechargeable battery, temperature compensation can also be performed on the remaining power of the rechargeable battery, that is, according to the discharge capacity and rated capacity of the rechargeable battery, the remaining power of the rechargeable and discharged battery is calculated, according to the temperature. The temperature of the rechargeable battery detected by the detection unit performs temperature compensation calculation on the theoretical remaining power of the charging and discharging battery, obtains the actual remaining power calculated by temperature compensation, and controls the power display unit or the power alarm unit according to the actual remaining power calculated by temperature compensation. The actual remaining power of the charging and discharging battery after temperature compensation calculation is best stored in the storage unit, and can be used as a basis for the charger to use different charging procedures. If the detected temperature of the charging and discharging battery is 25 degrees Celsius, which is equal to the reference temperature, for example, the power display unit of the electric vehicle shows that the remaining power is the theoretical remaining power, that is, the difference between the rated capacity and the discharge capacity; When the temperature of the discharged battery is greater than the reference temperature, such as 26 degrees Celsius, the actual remaining power displayed by the electric vehicle's power display unit is 105% of the theoretical remaining power. At this time, the remaining power displayed by the electric vehicle's power display unit is greater than the theoretical remaining power. ; If the detected temperature of the charging and discharging battery is lower than the reference temperature, such as 24 degrees Celsius, the actual remaining power displayed by the electric vehicle's power display unit is 95% of the theoretical remaining power, and the actual remaining power displayed by the electric vehicle's power display unit is If it is less than the theoretical remaining power, that is, the temperature of the charging and discharging battery is higher than the reference temperature, the theoretical remaining power of the charging and discharging battery will be compensated positively. If the temperature is lower than the reference temperature, the theoretical remaining power of the charging and discharging battery will be negatively compensated. Therefore, the user indicating unit of the electric vehicle displays the remaining power according to the actual remaining power information calculated by temperature compensation. In addition to displaying the remaining power, it can also display the remaining riding mileage or remaining riding time. If the user prompting unit on the electric vehicle is set as a power alarm unit, the power alarm unit will alarm based on the discharge amount information calculated by temperature compensation or the actual remaining power information calculated by temperature compensation. Alarm after a certain value or when the actual remaining power calculated by temperature compensation is lower than a certain value, alarm. The temperature of the rechargeable battery detected can be the temperature of the rechargeable battery environment or the temperature of the surface of the rechargeable battery. The temperature detection unit is preferably installed on the upper part of the surface of the rechargeable battery, that is, the position below the battery cover above the plate, such as Lead-acid batteries.

The display or alarm of the remaining power of the rechargeable battery in the present invention can also be calculated without temperature compensation, that is, the user's remaining power of the rechargeable battery is prompted directly according to the discharge amount of the rechargeable battery. That is, the central processing unit integrates the discharge current value and the discharge time value detected by the current detection unit to calculate the discharge amount of the charging and discharging battery, and the central processing unit directly controls the user prompting unit according to the calculated discharge amount, or the central processing unit. According to the discharge current value and the discharge time value detected by the current detection unit, the discharge capacity of the charge and discharge battery is calculated by integrating, and the remaining capacity of the charge and discharge battery is obtained by subtracting the rated capacity of the charge and discharge battery from the discharge capacity of the charge and discharge battery. The unit controls the user prompting unit according to the calculated remaining power of the rechargeable and discharged battery, which is also equivalent to realizing the prompting of the user's remaining power of the rechargeable battery according to the discharge amount of the rechargeable and discharged battery.

The charging method of the invention can avoid overshoot or undershoot of the charger, improve the charging efficiency, and ensure the service life of the charging and discharging battery. Especially when the discharge termination voltage is lower than a certain value, that is, when it is over-discharged, it is even more necessary to charge the over-discharged battery with a corresponding charging procedure, such as controlling the initial charging voltage. In the present invention, the charger and the rechargeable battery are in communication, indicating that the rechargeable battery is ready to be charged by the charger, and the connection can be wired or wireless.

The charging and discharging battery of the present invention may also include a storage unit and an information communication port. The storage unit is used to store the discharge capacity information and discharge termination voltage information of the charge and discharge battery, or store the discharge capacity information and the voltage drop per unit time of the charge and discharge battery. information, or only store the discharge termination voltage information of the charging and discharging battery, the information in the storage unit is communicated with the external device through the information communication port, and the external device is a charger or an electric vehicle or a user communication terminal.

In the present invention, a storage unit 3 is arranged on the charging and discharging battery 2 to store the information of the charging and discharging battery 2. On the one hand, the cost of the storage unit of the whole charging and discharging battery charging system is saved, that is, when the electric vehicle and the charger need to use the information of the charging and discharging battery , it is not necessary to set up a storage unit on the electric vehicle and the charger, as long as the storage unit is set on the charge-discharge battery 2 to meet the needs of the electric vehicle and the charger; on the other hand, the charge-discharge battery 2 The storage unit is arranged on the upper part, which is also conducive to the repair and detection of charge and discharge batteries, and improves the detection efficiency. The charging method of the charging system of the present invention can avoid overshoot or undershoot of the charger and ensure the service life of the charging and discharging battery. In addition, the electric vehicle of the present invention controls the user prompting unit of the electric vehicle 1 according to the discharge amount information or the remaining capacity calculated by the temperature compensation of the charging and discharging battery 2, which can accurately prompt the user and achieve a good human-computer interaction function and user experience.

The charging system and the electric vehicle charging system of the present invention may also include a user communication terminal and a cloud server. The charger obtains information in the storage unit. In addition to obtaining information directly between the storage unit and the charger through wired or wireless, it may also be The information in the storage unit is first sent to the user communication terminal, and then sent to the cloud server by the user communication terminal, and then sent back to the charger by the cloud server. In addition to charging the rechargeable battery with the corresponding charging program, the cloud server can also send the corresponding charging program to the charger after matching the corresponding charging program, and the charger will charge the rechargeable battery with the corresponding charging program. . The object of the present invention can also be achieved. In addition, the user can also know the current information of the rechargeable battery through the user communication terminal.

The central processing unit of the electric vehicle of the present invention can also control the voltage display unit according to the current real-time voltage information detected by the voltage detection unit when the charge and discharge battery 2 is discharged, and prompt the user, and the user can know the current voltage of the charge and discharge battery 2 when it is discharged in real time. , it is best to control the user prompting unit on the electric vehicle when the current voltage of the charging and discharging battery 2 is lower than a certain value to prompt the user to stop riding, and riding again will cause the over-discharge of the charging and discharging battery 2 to affect The service life of the battery can be changed in this way to avoid the decline of the battery life due to the user's use habit, and it can also save power. The charging and discharging battery 2 can be composed of multiple single cells. At this time, the current voltage information of each single cell is obtained. For example, the current voltage of one of the single cells is lower than 11V or 10.5V, and the user prompt unit on the electric vehicle is controlled. to prompt the user. The current real-time voltage information when the charging and discharging battery 2 is discharged can also be transmitted to the user communication terminal in real time through the information communication port, so that the user can obtain relevant information on the communication terminal. It can also be further transmitted to the cloud server through the user communication terminal, so as to know the user's riding status. The current voltage information can also be transmitted to the charger through the information communication port, and the charger will charge and discharge the battery according to the voltage information according to the appropriate charging procedure.

In order to better improve the user's riding experience, an electric vehicle of the present invention includes a charging and discharging battery, a user prompting unit, a central processing unit, a current detecting unit for detecting the current of the charging and discharging battery, and an abnormal parameter for detecting the charging and discharging battery. A battery parameter abnormality detection unit, such as a voltage detection unit that detects the voltage of the charging and discharging battery, when the charging and discharging battery is discharging, the voltage of the charging and discharging battery detected by the voltage detection unit, when the voltage of the charging and discharging battery detected by the voltage detection unit When the voltage is lower than a specific value, that is, when the charging and discharging battery is abnormal, the central processing unit controls the user to prompt the abnormal unit to prompt the user to stop riding and need to charge. When the voltage of the charging and discharging battery detected by the voltage detection unit is higher than a specific value, that is When the charge and discharge battery is normal, the central processing unit calculates the discharge amount of the charge and discharge battery according to the discharge current, and controls the user to prompt the normal unit according to the discharge amount of the charge and discharge battery, so as to remind the user of the distance or time or remaining capacity that the user can ride. The charging and discharging battery can be composed of multiple single cells. At this time, the voltage of the entire battery can be detected. It is best to detect the current voltage information of each single cell. For example, the current voltage of one of the single cells is lower than a specific value of 11V or 10.5V, control the user prompt unit on the electric vehicle to prompt the user. The setting of specific value can be set reasonably according to actual needs. In order to better improve the user's riding experience, an electric vehicle of the present invention can also detect the abnormal battery parameter detection unit for detecting abnormal parameters of the charging and discharging battery according to the discharge of the charging and discharging battery. When the voltage drops higher than a specific value, that is, when the charging and discharging battery is abnormal, the central processing unit controls the user to prompt the abnormal unit. The discharge current calculates the discharge capacity of the charge and discharge battery, and controls the user to prompt the normal unit according to the discharge capacity of the charge and discharge battery. Similarly, the charge and discharge battery can be composed of multiple single cells. At this time, the unit time pressure of the entire battery can be detected. It is best to detect the voltage drop information per unit time of each single battery. For example, the voltage drop per unit time of one single battery in a specific discharge stage is higher than 1V, and the user on the electric vehicle is controlled to prompt the abnormal unit to prompt user. The setting of specific value can be set reasonably according to actual needs.

In addition to the information for judging battery abnormality such as termination voltage, voltage drop per unit time, etc., the electric vehicle of the present invention can also include a battery parameter abnormality detection unit that can detect other parameters that can characterize the charge and discharge battery, such as a battery temperature parameter abnormality detection unit, The abnormal pressure detection unit of the gas inside the battery, the abnormal voltage detection unit of the single battery, etc. are used to detect the abnormality of the battery parameter information.

The user prompting unit of the electric vehicle of the present invention includes a user prompting normal unit and a user prompting abnormal unit. When the central processing unit of the electric vehicle determines that the information value representing the battery abnormality is in an abnormal range, it controls the user to prompt the abnormal unit, and the user prompts at this time. The abnormal unit can be an alarm unit or a riding parameter display unit, such as riding time, riding mileage, remaining power, etc.; when the information value representing the abnormal battery is in the normal range, the central processing unit will control the user prompt according to the discharge capacity Normal unit, at this time, the normal unit displayed by the user is preferably a display unit of riding parameters such as riding time, riding mileage, remaining power, etc. If the charging and discharging battery is abnormal, the user prompts the abnormal unit to use the alarm unit, and the user prompts the normal unit to use the riding parameter display unit. When the alarm unit alarms, the central processing unit controls the user to prompt the normal unit to not display or display the parameters that cannot be ridden. value, such as 0; when the user prompts that the abnormal unit does not alarm, at this time, the central processing unit controls the user to prompt the normal unit according to the discharge capacity, that is, the riding parameter display unit.

When the user prompts the abnormal unit to use the riding parameter display unit, when the charging and discharging battery is abnormal, the central processing unit controls the riding parameter display unit to not display or display the parameter value that cannot be ridden, such as 0, or display the abnormality mark identifying the abnormal battery At this time, the user prompts the abnormal unit, that is, the riding parameter display unit can also be used as the user prompting normal unit for charging and discharging batteries. When the charging and discharging battery is normal, the central processing unit controls the riding parameter display unit according to the discharge capacity, and provides it to the user for riding. Provide accurate parameter prompts, such as riding time, riding mileage, remaining power, etc., so as to achieve a good user experience. Of course, as mentioned above, the riding parameters are preferably the riding parameters calculated by temperature compensation. In order to better improve the user's riding experience, a user prompting method for an electric vehicle of the present invention includes the following steps: when the central processing unit of the electric vehicle determines that the information value representing the abnormality of the battery is in an abnormal range, it controls the user to prompt the abnormality At this time, the user prompts the abnormal unit to be an alarm unit or a riding parameter display unit, such as displaying the riding time, riding mileage, remaining power, or displaying abnormal signs to identify battery abnormalities; when the information indicating battery abnormalities is displayed When the value is in the normal range, the central processing unit controls the user to prompt the normal unit according to the discharge capacity. At this time, the normal unit displayed by the user is preferably the riding parameter display unit, such as riding time, riding mileage, remaining power, etc. It is best for the user to prompt Abnormal units and user-prompted normal units are both riding parameter display units.

The charger of the present invention includes a handheld single charging type, a mobile charging pile, a fixed charging pile and the like. The corresponding charging program of the present invention, that is, the matching corresponding charging program may be a charging program with different charging stages, or may be a charging program with the same charging stage but different charging parameters such as charging current, voltage or time. program.

In addition, the charge-discharge battery 2 of the present invention is a lead-acid battery, and can also be other secondary batteries, such as lead-carbon batteries, lithium batteries, lithium-ion batteries, nickel-zinc batteries, and the like.

The above-mentioned embodiment is only a preferred solution of the present invention, and does not limit the present invention in any form, and there are other variations and modifications under the premise of not exceeding the technical solution recorded in the claims.

Claims

A charging system includes a charging and discharging battery and a charger, wherein the charging and discharging battery includes a storage unit, and the storage unit is used to store the discharge termination voltage information of the charging and discharging battery, and the charger The information in the storage unit is used to charge the rechargeable and discharge battery with a suitable charging procedure.
The charging system according to claim 1, wherein the storage unit further stores information on the discharge amount of the charging and discharging battery.
The charging system according to claim 2, wherein the charger and the charging/discharging battery obtain the discharge amount information and the discharge termination voltage information in the storage unit through wired connection or wireless connection.
The charging system according to claim 2, further comprising a user communication terminal and a cloud server, wherein the discharge amount information and the discharge termination voltage information in the storage unit are transmitted to the cloud server through the user communication terminal, After the charger obtains the discharge amount information and the discharge termination voltage information in the storage unit from the cloud server, or after the cloud server matches the charging program, the charger obtains the charging program from the cloud server.
A charging method for a charging system, the charging system includes a charger and a charging and discharging battery, characterized in that it includes the following steps: the charger is in communication with the charging and discharging battery, and the charger obtains the discharge in the storage of the charging and discharging battery. Termination voltage information, the charger uses the discharge termination voltage information in the storage unit on the charging and discharging battery to charge the charging and discharging battery with a corresponding charging procedure.
A charging method for a charging system according to claim 5, characterized in that the charger further acquires the discharge amount information in the memory of the charging and discharging battery, and the charger uses the storage unit on the charging and discharging battery The discharge amount information and the discharge termination voltage information in the charging and discharging battery are charged according to the corresponding charging procedure.
The charging method of a charging system according to claim 6, wherein the charger obtains the discharge amount information and the discharge termination voltage information in the storage unit through a wired connection or a wireless connection.
A charging method for a charging system, the charging system includes a charger, a charging and discharging battery, a user communication terminal and a cloud server, characterized in that it includes the following steps: the charger is in communication with the charging and discharging battery, and the charging and discharging battery is in communication. The end-of-discharge voltage information in the memory is transmitted to the cloud server through the user communication terminal, and the charger obtains the end-of-discharge voltage information in the storage unit from the cloud server, and charges and discharges the charge and discharge with a corresponding charging program The battery is charged.
The charging method for a charging system according to claim 8, wherein the memory of the charging and discharging battery further stores discharge capacity information, and the discharge capacity information is also transmitted to the cloud server through a user communication terminal , the charger obtains the discharge amount information and the discharge termination voltage information in the storage unit from the cloud server, and charges the charging and discharging battery with a corresponding charging program.
A charging method for a charging system, the charging system includes a charger, a charging and discharging battery, a user communication terminal and a cloud server, characterized in that it includes the following steps: the charger is in communication with the charging and discharging battery, and the charging and discharging battery is in communication. The discharge termination voltage information in the memory is transmitted to the cloud server through the user communication terminal, and the cloud server matches the corresponding charging program according to the discharge termination voltage information in the storage unit, and sends the matched corresponding charging program to the cloud server. The charger, the charger charges the charging and discharging battery according to a corresponding charging program.
The charging method for a charging system according to claim 10, wherein the storage of the charging and discharging battery further stores discharge capacity information, and the discharge capacity information is also transmitted to the cloud server through a user communication terminal , the cloud server matches the corresponding charging program according to the discharge amount information and the discharge termination voltage information in the storage unit, and sends the matched corresponding charging program to the charger, and the charger uses the corresponding charging program The charging and discharging battery is charged.
An electric vehicle charging system includes an electric vehicle and a charger, the electric vehicle includes a charging and discharging battery, and a storage unit is installed on the electric vehicle, wherein the storage unit is used for storing the charge and discharge battery. Discharge termination voltage information, the charger charges the charging and discharging battery according to the information in the storage unit with a suitable charging procedure.
The electric vehicle charging system according to claim 12, wherein the storage unit further stores information on the discharge amount of the charge and discharge battery.
The electric vehicle charging system according to claim 13, wherein the charger and the charging and discharging battery obtain the discharge amount information and the discharge termination voltage in the storage unit through wired connection or wireless connection information.
The electric vehicle charging system according to claim 13, further comprising a user communication terminal and a cloud server, wherein the discharge amount information and the discharge termination voltage information in the storage unit are transmitted to the user communication terminal through the user communication terminal. The cloud server, the charger obtains the discharge amount information and discharge termination voltage information in the storage unit from the cloud server or after the cloud server matches the charging program, the charger obtains the charge from the cloud server program.
A charging method for an electric vehicle charging system, the electric vehicle includes a charging and discharging battery, and a storage unit is installed on the electric vehicle, characterized in that it includes the following steps: the charger is in communication with the charging and discharging battery, and the charger obtains the stored data. The discharge termination voltage information in the storage unit on the electric vehicle is used, and the charger uses the discharge termination voltage information in the storage unit on the charge-discharge battery to charge the charge-discharge battery with a corresponding charging program.
A charging method for an electric vehicle charging system according to claim 16, wherein the charger obtains the discharge amount information in the storage unit on the electric vehicle, and the charger uses the charge and discharge amount on the battery to charge and discharge. The discharge amount information and the discharge termination voltage information in the storage unit are used to charge the charge-discharge battery with a corresponding charge procedure.
The charging method for an electric vehicle charging system according to claim 17, wherein the charger obtains the discharge amount information and the discharge termination voltage information in the storage unit through a wired connection or a wireless connection.
A charging method for an electric vehicle charging system, the electric vehicle charging system includes an electric vehicle, a charger, a user communication terminal and a cloud server, the electric vehicle includes a charging and discharging battery, and a storage unit is installed on the electric vehicle, which is It is characterized in that it includes the following steps: the charger is in communication with the charging and discharging battery, and the discharge termination voltage information in the memory of the charging and discharging battery is transmitted to the cloud server through the user communication terminal, and the charger obtains from the cloud server The discharge termination voltage information in the storage unit is used to charge the charge-discharge battery according to a corresponding charging program.
The charging method for an electric vehicle charging system according to claim 19, wherein the memory of the charging and discharging battery further stores discharge capacity information, and the discharge capacity information is transmitted to the cloud through a user communication terminal The server, where the charger obtains the information on the amount of discharge and the information on the end-of-discharge voltage in the storage unit from the cloud server, and charges the charge-discharge battery with a corresponding charging program.
A charging method for an electric vehicle charging system, the electric vehicle charging system includes an electric vehicle, a charger, a user communication terminal and a cloud server, the electric vehicle includes a charging and discharging battery, and a storage unit is installed on the electric vehicle, which is It is characterized in that it includes the following steps: the charger is in communication with the charging and discharging battery, and the discharge termination voltage information in the memory of the charging and discharging battery is transmitted to the cloud server through the user communication terminal, and the cloud server is based on the storage unit. The discharge termination voltage information in the device matches the corresponding charging program, and sends the matching corresponding charging program to the charger, and the charger charges the charging and discharging battery according to the corresponding charging program.
The charging method for an electric vehicle charging system according to claim 21, wherein the memory of the charging and discharging battery further stores discharge capacity information, and the discharge capacity information is transmitted to the cloud through a user communication terminal The server, the cloud server matches the corresponding charging program according to the discharge amount information and the discharge termination voltage information in the storage unit, and sends the matched corresponding charging program to the charger, and the charger uses the corresponding charging The program charges the rechargeable and discharged battery.
A charge-discharge battery, characterized in that the charge-discharge battery includes a storage unit and an information communication port, the storage unit is used to store the discharge termination voltage information of the charge-discharge battery, and the information in the storage unit passes through The information communication port communicates with external devices.
The charge-discharge battery according to claim 23, wherein the storage unit further stores discharge amount information of the charge-discharge battery.
A charge-discharge battery according to claim 24, wherein the external device is a charger or an electric vehicle.
The charge-discharge battery according to any one of claims 23-26, wherein the communication connection is a wired connection or a wireless connection.
An electric vehicle, the electric vehicle includes a charge-discharge battery, a storage unit and an information communication port are provided on the electric vehicle, wherein the storage unit is used for storing the discharge termination voltage information of the charge-discharge battery , the information in the storage unit is communicated with the external device through the information communication port.
The electric vehicle according to claim 27, wherein the storage unit further stores information on the amount of discharge of the charge-discharge battery.
The electric vehicle according to claim 27 or 28, wherein the external device is a charger or an electric vehicle or a user communication terminal.
The electric vehicle according to claim 27 or 28, wherein the communication connection is a wired connection or a wireless connection.