CN114801857A - Control method and system for working mode of battery replacement in battery replacement station - Google Patents

Abstract

The invention discloses a method and a system for controlling the working mode of a battery swapping battery in a battery swapping station. The battery swapping station includes an on-site monitoring platform and several groups of chargers and charging bins in one-to-one correspondence. The installed battery pack is communicatively connected; the in-station monitoring platform is communicatively connected with each charger; the control method includes the following steps: the in-station monitoring platform sends a power-on command to the corresponding charger; the charger controls the corresponding charging after receiving the power-on command The battery pack in the warehouse is powered on at low voltage; the in-station monitoring platform sends the first message to the charger in response to the charging command; the charger forwards the first message to the corresponding battery pack in the charging compartment after receiving the first message ; After receiving the first message, the battery pack enters the charging mode of the swap station. The present invention can simplify the structural design of the power exchange station, reduce the cost, and can ensure better DC charging of the power exchange battery in the power exchange station.

Description

Method and system for controlling the working mode of battery swapping in a swapping station

This application is a divisional application for an invention patent with an application date of December 14, 2018, an application number of 2018115325292, and an invention title of "Control Method and System for the Working Mode of Swap Battery in a Swap Station".

technical field

The invention relates to the field of battery-swap charging in a swap station, in particular to a control method and system for a working mode of a battery-swap in a swap station.

Background technique

At present, the DC fast charging of non-battery vehicles on the market is in accordance with GBT27930-2015 "Communication Protocol between Off-Board Conductive Charger and Battery Management System for Electric Vehicles", GBT18487.1-2015 "Conductive Charging System for Electric Vehicles", GBT20234.1-2015 "Electric Vehicle Conductive Charging Connection Device Part 3 DC Charging Interface", etc., but the current OEMs are not required to detect A+ (a signal) wake-up signal and CC2 (used to determine the connection between the battery and the charger). Whether the connection is reliable or not) The charging connection signal is placed in the vehicle for testing, and some is placed in the BMS (battery management system) of the battery for testing. If only relying on the A+ wake-up signal and the CC2 charging connection signal to start the charging of the replacement battery (also called the battery pack) in the swap station, it is not compatible with all models to ensure the normal charging function of the battery. On the other hand, due to the complex structure of the power exchange station, if the control of the A+ wake-up signal and the CC2 charging connection signal is added, the wiring harness in the station will be more complicated, the cost will be increased, and the pin resources of the quick-change connector will be occupied.

In addition, the application scenario in the swap station is more special. In addition to satisfying the normal operation of the DC fast charging of the battery pack, it is also required that the battery pack is placed in the charging compartment of the swap station, regardless of whether it is charged or not, the BMS of the battery pack needs to be able to upload The monitoring data is sent to the monitoring platform in the station to monitor the battery status; when the battery pack is located in the vehicle, most car manufacturers do not want to add unnecessary monitoring information to reduce the load rate of the field bus, so the battery pack needs to be able to know that it is in the process of battery replacement. In the station or on the vehicle, the current practice is that when the BMS cannot detect the control information of the vehicle's field bus, it determines that the battery is located in the replacement station. This has the potential to be a safety hazard that the vehicle communication failure cannot be distinguished. Specifically, , When the replacement battery is installed in the vehicle, if the vehicle communication fails, the BMS of the battery replacement cannot detect the control information of the vehicle field bus, and it will mistakenly think that it is located in the replacement station, so the current practice There is a problem that the location is not correctly identified when the vehicle communication fails.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to overcome the defects of complicated wiring, high cost and incompatibility with all vehicle models in the method of starting the charging of the battery swapping station through the A+ wake-up signal and the CC2 charging connection signal in the prior art. A control method and system for a working mode of a battery swapping station in a battery swapping station, which can simplify the structural design of the battery swapping station, reduce costs, and at the same time ensure better DC charging of the battery swapping battery in the battery swapping station.

The present invention solves the above-mentioned technical problems through the following technical solutions:

The present invention provides a method for controlling the working mode of a battery swapping station in a battery swapping station. The battery swapping station includes an on-site monitoring platform and several groups of chargers and charging bins corresponding to each other. the communication connection of the battery pack installed in the charging compartment; the communication connection between the monitoring platform in the station and each of the chargers;

The control method includes the following steps:

The in-station monitoring platform sends a power-on command to the corresponding charger;

The charger controls the low-voltage power-on of the battery pack in the corresponding charging compartment after receiving the power-on command;

The in-station monitoring platform sends a first message to the charger in response to the charging start instruction;

The charger forwards the first message to the corresponding battery pack in the charging compartment after receiving the first message;

The battery pack enters the battery swapping station charging mode after receiving the first message.

In this solution, the power-on instruction is an instruction input from the outside world to the monitoring platform in the station, which can be implemented according to specific needs.

In this solution, the battery pack starts to shake hands with the charger after receiving the first message, and enters the charging mode of the battery swap station: during the charging process, the DC charging control is performed according to the process specified in GBT27930 (a protocol), including handshake. stage, configuration stage, charging stage and charging end stage (charging end includes fault termination, full termination and manual termination). The first message is a message notifying that the battery pack should enter the charging mode of the battery swap station, and the mode means that the battery pack is in a charging state. The specific message content can be set according to actual needs, as long as the battery pack can be parsed and identified. For example, a certain byte in the message can be set to a preset value to represent entering charging, and other values can be set to represent exiting charging. This will not be repeated here.

This solution is based on the hardware architecture in the swap station, and realizes that the monitoring platform in the station sends the first message to the target charger, and the target charger then forwards the first message to the charging bin located in the one-to-one corresponding to the target charger. The battery pack enables the battery pack to accurately determine when to enter the swap station charging mode for charging, replacing the A+ wake-up signal and the CC2 charging connection signal provided by the existing charger to the battery pack, simplifying the system design of the swap station and reducing In the case of cost, it can also ensure a better realization of the DC charging process in the swap station.

Preferably, the control method further comprises the following steps:

When the battery pack is in the charging mode of the battery swap station, battery monitoring information is sent to the monitoring platform in the station.

This solution realizes that the battery pack can still upload battery monitoring information to the monitoring platform in the station when it is charged in the charging compartment of the swap station, so as to monitor the battery status. The battery monitoring information is set according to specific monitoring requirements, for example, the battery's current power, voltage, current, temperature, and the like.

Preferably, the control method further comprises the following steps:

When the battery pack is installed in the charging compartment, the in-station monitoring platform periodically sends a second message to the charger corresponding to the charging compartment;

After receiving the second message, the charger forwards the second message to the battery pack in the corresponding charging compartment;

The battery pack judges whether the second message is received periodically, if not, it enters the driving mode, if so, the battery pack judges whether it is in the charging mode of the battery swapping station, if not, it enters the battery swapping station monitoring mode. Then the charging mode of the battery swap station is maintained.

In this solution, the second message is used to enable the battery pack in the swap station to know that it is in the swap station, and the battery pack can only receive the second message periodically sent by the monitoring platform in the station when it is in the station. , if the battery pack is in the car, it cannot receive the second message. At this time, the battery pack can conclude that it is in the car, and then set itself in the driving mode. In this mode, the battery pack does not need to upload battery monitoring information, thereby avoiding the occupation of the communication bandwidth of the field bus to reduce the load rate of the field bus. When the battery pack is in the station, it will periodically receive the second message. The battery pack can know its current mode, specifically: the default mode after power-on, the default mode is set according to specific needs, at this time, the battery pack directly enters the swap station monitoring mode after receiving the second message; After the package receives the second message, it learns that it is in the charging mode of the swapping station, then keeps the charging mode of the swapping station unchanged, and continues to charge; if the battery pack is already in the monitoring mode of the swapping station, then entering the monitoring mode of the swapping station means the same as maintaining the charging mode of the swapping station. The power station monitoring mode depends on the specific implementation of the mode setting, which is a conventional technical means in the field, and will not be repeated here.

In this solution, it is a conventional technical means in the art for the battery pack to determine whether it is in the charging mode of the battery swapping station, and there are various ways to realize it. For example, it can be realized by reading the mode value in the register, or it can be realized by other ways. Repeat.

In this solution, the battery pack can effectively identify whether the battery pack is in the battery swap station or in the vehicle by judging whether it regularly receives the second message periodically sent by the monitoring platform in the station. Specifically, if the battery pack does not receive the second message regularly, the battery pack determines that it is on the vehicle and is in driving mode; if the battery pack receives the second message regularly, it is further judged whether it is charging at the swap station mode, if so, continue to maintain the charging state, otherwise switch to the monitoring mode of the swap station. In this way, it is realized that the replacement battery can know whether it is in the replacement station or on the vehicle, which effectively solves the problem that the replacement battery is located in the vehicle but cannot be recognized when the vehicle communication fails.

Preferably, the control method further comprises the following steps:

The in-station monitoring platform sends a third message to the charger in response to the charging shutdown command;

After receiving the third message, the charger forwards the third message to the corresponding battery pack in the charging compartment;

After receiving the third message, the battery pack enters the monitoring mode of the battery swap station.

This solution realizes the method of exiting from the charging mode of the battery swapping station. When the target battery is fully charged or wants to interrupt charging, the monitoring platform in the station can trigger the monitoring platform to send a third message to the target charger by issuing a charging shutdown command. The charger then forwards the third message to the battery pack located in the charging bin corresponding to the target charger one-to-one, so that the battery pack exits from the swap station charging mode and enters the swap station monitoring mode.

Preferably, when the battery pack is in the swap station monitoring mode and the swap station charging mode, battery monitoring information is periodically sent to the in-station monitoring platform.

This solution realizes that the swapped battery can accurately identify whether it is in the swap station or on the vehicle. Based on this, it can be realized that the battery pack does not upload battery monitoring information when the swapped battery is on the vehicle, so as to reduce the load rate of the field bus. This solution further realizes that as long as the battery pack is installed in the charging compartment of the swap station, regardless of whether it is charged or not, the battery pack can upload the battery monitoring information to the monitoring platform in the station to monitor the battery status.

The present invention also provides a control system for the working mode of the battery swapping in the swapping station, which includes a monitoring platform in the station and several groups of chargers and charging bins corresponding to one another, wherein the chargers in each group are connected to the charging bins in the charging bin. Communication connection of the installed battery pack; communication connection between the monitoring platform in the station and each of the chargers;

The in-station monitoring platform is used to send a power-on command to the corresponding charger;

The charger is used to control the low-voltage power-on of the battery pack in the corresponding charging compartment after receiving the power-on command;

The in-station monitoring platform is further configured to send a first message to the charger in response to the charging start instruction;

The charger is further configured to forward the first message to the corresponding battery pack in the charging compartment after receiving the first message;

The battery pack is used to enter the charging mode of the battery swap station after receiving the first message.

Preferably, the battery pack is further configured to send battery monitoring information to the in-station monitoring platform when in the charging mode of the battery swap station.

Preferably, when the battery pack is installed in the charging compartment, the in-station monitoring platform is further configured to periodically send a second message to the charger corresponding to the charging compartment;

The charger is further configured to forward the second message to the battery pack in the corresponding charging compartment after receiving the second message;

The battery pack is also used to judge whether the second message is received periodically, if not, enter the driving mode, if so, the battery pack is also used to judge whether it is in the charging mode of the swap station, if not, enter the driving mode. The battery swap station monitoring mode, if so, keep the battery swap station charging mode.

Preferably, the in-station monitoring platform is further configured to send a third message to the charger in response to the charging shutdown command;

The charger is further configured to forward the third message to the corresponding battery pack in the charging compartment after receiving the third message;

The battery pack is further configured to enter the monitoring mode of the swapping station after receiving the third message.

Preferably, the battery pack is further configured to periodically send battery monitoring information to the in-station monitoring platform when in the swap station monitoring mode and the swap station charging mode.

The positive improvement effect of the present invention is that: the control method and system for the working mode of the battery swapping battery in the swapping station provided by the present invention realize that the monitoring platform in the station sends the first message to the target charger, and the target charger then forwards the first message. The text gives the battery pack located in the charging compartment corresponding to the target charger, so that the battery pack can accurately determine when to enter the in-station charging mode for charging, replacing the A+ wake-up signal provided by the existing charger to the battery pack. And the CC2 charging connection signal, while simplifying the system design of the swap station and reducing the cost, it can also ensure a better realization of the DC charging process in the swap station. In addition, it is realized that the battery monitoring information will be sent to the monitoring platform only when the battery is in the replacement station, which reduces the load rate of the field bus when the battery is located on the vehicle for charging, and effectively solves the problem that the battery is located on the vehicle. However, when the vehicle communication fails, it cannot identify the problem that the battery is still in the vehicle.

Description of drawings

FIG. 1 is a schematic structural diagram of a control system for a working mode of a battery swapping battery in a battery swapping station according to Embodiment 1 of the present invention.

FIG. 2 is a flowchart of a method for controlling the working mode of a battery swapping battery in a battery swapping station according to Embodiment 2 of the present invention.

FIG. 3 is a flowchart of a control method for a working mode of a battery swapping battery in a battery swapping station according to Embodiment 3 of the present invention.

FIG. 4 is a flow chart of determination on the monitoring platform side in the station in an example based on the concept of the present invention.

FIG. 5 is a flow chart of determination on the charger side in an example based on the inventive concept.

FIG. 6 is a flow chart of determination on the battery pack side in an example based on the inventive concept.

Detailed ways

The present invention is further described below by way of examples, but the present invention is not limited to the scope of the described examples.

Example 1

As shown in FIG. 1 , this embodiment provides a control system for the working mode of a battery swapping station in a battery swapping station, including a monitoring platform 1 in the station and several groups of chargers 2 and charging bins 3 corresponding to one another, only shown in the figure. There are two groups, and the chargers 2 in each group are connected in communication with the battery packs 4 installed in the charging compartment 3 through the corresponding charging compartment 3; the monitoring platform 1 in the station is in communication connection with each charger 2.

During the specific implementation, the monitoring platform 1 in the station communicates with the plurality of chargers 2 through the CAN (controller area network) bus CAN1; the chargers 2 in each group communicate with the chargers 2 installed on the The battery pack 4 in the charging compartment 3 is communicatively connected.

In this embodiment, the in-station monitoring platform 1 is used to send a power-on command to the corresponding charger 2 . The charger 2 is used to control the low-voltage power-on of the battery pack 4 in the corresponding charging compartment 3 after receiving the power-on command. After the battery pack 4 is powered on at a low voltage, various messages can be received through the CAN0 bus and further processed. The in-station monitoring platform 1 is also used to respond to the charging start command input from the outside, and send a first message to the charger 2 . The charger 2 is further configured to forward the first message to the battery pack 4 in the corresponding charging bin 3 after receiving the first message. The battery pack 4 is used to communicate with the corresponding charger 2 after receiving the first message, so as to enter the battery swapping station charging mode.

In this embodiment, the in-station monitoring platform knows which charging compartment is installed with the battery pack, and the in-station monitoring platform is further configured to periodically send the second message to the charger corresponding to the charging compartment in which the battery pack is installed. The charger is further configured to forward the second message to the battery pack in the corresponding charging compartment after receiving the second message.

In this embodiment, whether the battery pack is in the station or in the car, it will determine whether the second message is received periodically. If not, it enters the driving mode, indicating that the battery pack is in the car at this time. If so, the battery pack is also used for It is further judged whether it is in the battery swapping station charging mode, and if so, it continues to maintain the battery swapping station charging mode. If not, it is further judged whether it is in the battery swapping station monitoring mode.

In this embodiment, the in-station monitoring platform is further configured to send a third message to the charger in response to an externally inputted charging shutdown command; the charger is further configured to forward the third message to the corresponding charger after receiving the third message The battery pack in the warehouse; the battery pack is also used to enter the monitoring mode of the swap station after receiving the third message.

In this embodiment, the battery pack is also used to periodically send battery monitoring information to the monitoring platform in the station when in the monitoring mode of the battery swap station and the charging mode of the battery swap station.

The control system for the working mode of the battery swapped in the battery swapping station provided in this embodiment realizes that the monitoring platform in the station sends the first message to the target charger, and the target charger then forwards the first message to the location corresponding to the target charger. The battery pack in the new charging compartment enables the battery pack to effectively determine when to enter the in-station charging mode for charging, replacing the A+ wake-up signal and CC2 charging connection signal provided by the existing charger to the battery pack. In the case of system design and cost reduction, it can also ensure a better realization of the DC charging process in the swap station.

In this embodiment, the battery pack can effectively identify whether the battery pack is in the battery swap station or in the vehicle by judging whether it regularly receives the second message periodically sent by the monitoring platform in the station. Specifically, if the battery pack does not receive the second message regularly, the battery pack determines that it is on the vehicle and is in driving mode; if the battery pack receives the second message regularly, it is further judged whether it is charging at the swap station mode, if so, continue to maintain the charging state, otherwise switch to the monitoring mode of the swap station. In this way, it is realized that the replacement battery can know whether it is in the replacement station or on the vehicle, which effectively solves the problem that the replacement battery is located in the vehicle but cannot be recognized when the vehicle communication fails. Based on this, it can be realized that the battery pack does not upload battery monitoring information when the battery is located in the vehicle, so as to reduce the load rate of the field bus. This embodiment further realizes that as long as the battery pack is installed in the charging compartment of the swap station, regardless of whether it is charged or not, the battery pack can upload monitoring data to the monitoring platform in the station to monitor the battery status, which satisfies the need for the swap station to monitor every battery located in the battery pack. The needs of each battery can be effectively monitored.

Example 2

This embodiment provides a method for controlling the working mode of a swap battery in a swap station, which is implemented based on the control system for the working mode of a swap battery in a swap station in Embodiment 1.

As shown in Figure 2, the control method of this embodiment includes the following steps:

Step 101: The monitoring platform in the station sends a power-on command to the corresponding charger.

Step 102: After receiving the power-on instruction, the charger controls the battery pack in the corresponding charging compartment to power on at a low voltage.

Step 103: The in-station monitoring platform sends a first message to the charger in response to the charging start command.

Step 104: After receiving the first message, the charger forwards the first message to the battery pack in the corresponding charging compartment.

Step 105: After receiving the first message, the battery pack communicates with the corresponding charger to enter the charging mode of the battery swapping station.

Step 106: The monitoring platform in the station sends a third message to the charger in response to the charging shutdown command.

Step 107: After receiving the third message, the charger forwards the third message to the battery pack in the corresponding charging compartment.

Step 108: After receiving the third message, the battery pack enters the monitoring mode of the swap station.

In this embodiment, the battery pack periodically sends battery monitoring information to the in-station monitoring platform when the battery pack is in the battery swap station monitoring mode and the battery swap station charging mode.

In this embodiment, based on the hardware architecture of the control system in the swap station, the monitoring platform in the station sends the first message to the target charger, and the target charger then forwards the first message to the charging bin corresponding to the target charger. It replaces the A+ wake-up signal and CC2 charging connection signal provided by the existing charger to the battery pack, which simplifies the system design of the swap station and reduces the In the case of cost, it can also ensure a better realization of the DC charging process in the swap station. The method of exiting from the charging mode of the battery swap station is further realized. When the target battery has been charged or wants to interrupt charging, the monitoring platform in the station can trigger the monitoring platform to send a third message to the target charger by issuing a charging shutdown command. The charger then forwards the third message to the battery pack located in the charging bin corresponding to the target charger, so that the battery pack exits from the battery swapping station charging mode and enters the swapping station monitoring mode.

Example 3

This embodiment provides a method for controlling the working mode of a swap battery in a swap station, which is implemented based on the control system for the working mode of a swap battery in a swap station in Embodiment 1.

In this embodiment, the message ID (identification) of each message is the message ID for the target charger and the corresponding target battery pack. Byte 0 of the message is used to indicate the location of the battery. The default value of section 0 is 0x00. When the value of byte 0 is 0x01, it means that the battery is located in the swap station, and other values are reserved values. When the value is 0x01, it means charging is turned on, and other values are reserved.

As shown in Figure 3, the control method of this embodiment includes the following steps:

Step 201 , the in-station monitoring platform sends a power-on command to the corresponding charger, so as to control the charger to power on the battery pack in the charging bin corresponding to the charger at low voltage.

Step 202: After receiving the power-on instruction, the charger controls the battery pack in the corresponding charging compartment to power on at a low voltage.

Step 203: After the battery pack is powered on at low voltage, the in-station monitoring platform will periodically send corresponding messages to the CAN1 network of the corresponding charger, and the charger receives the message ID of the message for the battery pack in the target charging bin. When the message of the message ID is sent, the message received on the CAN1 network will be forwarded to the battery pack in the corresponding charging compartment, and the battery pack will be processed according to the content of the different messages received.

The specific instructions are as follows:

When the battery pack is powered on at low voltage, the in-station monitoring platform will periodically send a message containing the second message to the target charger without receiving other instructions to operate the battery pack. The battery pack identifies the When the periodically received message is the second message, it will enter the monitoring mode of the swap station. The value of byte 0 of the second packet is 0x01, and the value of byte 1 is 0x00.

When the in-station monitoring platform receives a charging command (such as a user swiping card charging command) input from the outside world, it will respond to the command. At this time, the in-station monitoring platform will periodically send a message with the content of the first message to the target charger. , when the battery pack recognizes that the periodically received message is the first message, it will further determine whether the battery pack is in the battery swapping station charging mode, if not, enter the swapping station monitoring mode, and if so, keep the swapping station charging mode. The value of byte 0 of the first packet is 0x01, and the value of byte 1 is 0x01.

When the in-station monitoring platform receives the command to close the charging input from the outside world (such as the user swiping the card again to end the charging command), it will respond to the command. At this time, the content of the message periodically sent by the in-station monitoring platform is the third message, and the battery pack is identified as the third message. When the periodically received message is the third message, it will enter the monitoring mode of the swap station. The value of byte 0 of the third packet is 0x01, and the value of byte 1 is 0x00.

In this embodiment, the control method further includes the following steps:

Whether the battery pack is in the battery swap station or in the car, it will determine whether the corresponding message is received periodically. If it is not received, it will enter the driving mode. If it is received, refer to the above-mentioned several message content to carry out the corresponding mode. set up. Therefore, while the battery for replacement can be charged normally, it can also effectively solve the problem that the battery for replacement is located in the vehicle but cannot be identified when the communication of the whole vehicle fails.

In this embodiment, the battery pack periodically sends battery monitoring information to the in-station monitoring platform when the battery pack is in the battery swap station monitoring mode and the battery swap station charging mode.

The method for controlling the working mode of a battery swapping battery in a battery swapping station provided by this embodiment enables the monitoring platform in the station to send a first message to a target charger, and the target charger then forwards the first message to a location corresponding to the target charger. The battery pack in the new charging compartment enables the battery pack to effectively determine when to enter the in-station charging mode for charging, replacing the A+ wake-up signal and CC2 charging connection signal provided by the existing charger to the battery pack. In the case of system design and cost reduction, it can also ensure a better realization of the DC charging process in the swap station. At the same time, it also realizes that the battery monitoring information will be sent to the monitoring platform only when the battery is in the battery swap station, which reduces the load rate of the field bus when the battery is located on the vehicle for charging, and effectively solves the problem that the battery is located on the vehicle. However, when the vehicle communication fails, it cannot identify the problem that the battery is still in the vehicle.

The technical solutions and technical effects of the present invention will be further described below through specific examples.

FIGS. 4 to 6 show the judgment flow of the working mode from three angles of the in-station monitoring platform, the charger and the battery pack in an example based on the inventive concept.

Among them, the message ID for one of the chargers and the battery pack in the corresponding charging bin is 0x18718056.

FIG. 4 is a schematic flow chart of the control process of the in-station monitoring platform in the process of realizing the working mode of the battery-swappable battery in the swapping station. Specifically, the in-station monitoring platform sends a low-voltage power-on command to the charger corresponding to the target charging bin when it learns that the battery pack has been installed in a target charging bin, so as to control the charger to low-voltage power up the battery pack in the corresponding charging bin. electricity, so that the BMS in the battery pack can work normally. Subsequently, the in-station monitoring platform periodically (period of 100 milliseconds) sends a message ID of 0x18718056, Byte (byte) 0 of the message is 0x01, and Byte1 is 0x00 to the CAN1 network of the corresponding charger, and then the in-station monitoring The platform regularly checks whether there is an external command that requires the battery to be turned on for charging. Otherwise, it continues to periodically send a message with ID 0x18718056, byte 0 of the message 0x01, and byte 1 of 0x00 to the CAN1 network of the corresponding charger. If so, periodically send a message with ID 0x18718056, byte 0 of the message as 0x01, and byte 1 of 0x01 to the CAN1 network of the corresponding charger, so that the corresponding battery pack enters the battery swapping station charging mode. Next, the monitoring platform in the station regularly checks whether there is an external command that requires the battery to be turned off and charged. Otherwise, it continues to periodically send a message with ID 0x18718056, byte 0 of the message 0x01, and byte 1 of 0x01 to the corresponding charger. If the CAN1 network is connected to the charger, the message ID is 0x18718056, the byte 0 of the message is 0x01, and the byte 1 is 0x00 to the CAN1 network of the corresponding charger, so that the battery pack stops charging and exits the replacement. The power station charging mode enters the power station monitoring mode, and the cycle goes on and on.

FIG. 5 is a schematic flowchart of the control process of the charger in realizing the working mode of the battery swapped in the battery swapping station. Specifically, the charger controls the low-voltage power-on of the battery pack in the corresponding charging bin after receiving the low-voltage power-on command sent by the monitoring platform in the station, and then monitors whether the CAN1 network receives a message with a message ID of 0x18718056. Then continue to monitor, if there is, forward the message with the message ID of 0x18718056 received on the CAN1 network in real time to the battery pack corresponding to the CAN0 network.

FIG. 6 is a schematic flowchart of the control process of the battery pack in realizing the working mode of the battery swapped in the battery swapping station. Specifically, the charger controls the low-voltage power-on of the battery pack according to the received command. After power-on, the BMS in the battery pack is in the normal working mode. After the low-voltage power-on of the BMS, it determines whether it periodically receives the message ID of 0x18718056 and the message Byte 0 of 0 is 0x01, that is, the message that the battery is in the swap station. If not, it means that the battery is on the vehicle and is in driving mode. If it is received, it means that the battery is in the swap station, and the monitoring of the swap station is entered. Mode; the BMS in the battery pack continues to determine whether it has periodically received a message whose ID is 0x18718056, and the byte 0 of the message is 0x01, and the byte 1 is also 0x01. If it is received, it will start charging. The phone handshakes the communication and enters the charging mode of the battery swapping station; if not, it continues to judge whether it has periodically received the message whose ID is 0x18718056 and the byte 0 of the message is 0x01, and the byte 1 is also 0x00. Before the loop, determine whether you have periodically received a message whose ID is 0x18718056, and the byte 0 of the message is 0x01, and the byte 1 is also 0x01. The message ID is 0x18718056 and the byte 0 of the message is 0x01, that is, the message that the battery is in the swap station.

This example can simplify the structural design of the power exchange station and reduce the cost. The battery swapping station mode is added, so that the battery monitoring information will be sent to the monitoring platform in the station only when the battery is in the swapping station, which reduces the consumption of the CAN network when the battery is on the vehicle. At the same time, it can effectively distinguish whether the loss of vehicle communication is a normal phenomenon. The charging mode of the swap station and the monitoring mode of the swap station are added to simulate the A+ wake-up signal and the CC2 connection confirmation signal provided by the charger, and the conditions for entering and exiting DC charging are clarified.

Although the specific embodiments of the present invention are described above, those skilled in the art should understand that this is only an illustration, and the protection scope of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principle and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims (16)

1. A control method for a working mode of a battery-swap in a power-swap station, wherein the control method is applied to a power-swap station, and the power-swap station includes an in-station monitoring platform and several groups of one-to-one corresponding chargers and chargers The chargers in each group are communicatively connected with the battery packs installed in the charging bins; the monitoring platform in the station is communicatively connected with each of the chargers; The control method includes the following steps: The in-station monitoring platform sends a power-on command to the corresponding charger; The charger controls the low-voltage power-on of the battery pack in the corresponding charging compartment after receiving the power-on command; The in-station monitoring platform sends a first message to the charger in response to the charging start instruction; After receiving the first message, the charger forwards the first message to the battery pack in the corresponding charging compartment, so that the battery pack can receive the first message after receiving the first message. Then enter the charging mode of the charging station; The control method also includes the following steps: When the battery pack is installed in the charging compartment, the in-station monitoring platform periodically sends a second message to the charger corresponding to the charging compartment; After receiving the second message, the charger forwards the second message to the battery pack in the corresponding charging compartment, so that the battery pack can determine whether the battery pack is being replaced Inside the station. 2. The control method for the working mode of the battery-swappable battery in the power-swap station according to claim 1, wherein the control method further comprises the following steps: The in-station monitoring platform sends a third message to the charger in response to the charging shutdown command; After receiving the third message, the charger forwards the third message to the battery pack in the corresponding charging compartment, so that the battery pack can receive the third message after receiving the third message. Then enter the monitoring mode of the swap station. 3. The control method for the working mode of the battery-swappable battery in the power-swap station according to claim 1, wherein the control method further comprises the following steps: The in-station monitoring platform receives battery monitoring information sent by the battery pack. 4. A control method for a working mode of a battery swap in a battery swap station, wherein the control method is applied to a battery pack, and the control method comprises: After receiving the first message, enter the charging mode of the battery swapping station; It is judged whether the second message is received periodically, so as to judge whether the battery pack is in the swap station. 5. The control method for the working mode of the battery-swappable battery in the power-swap station according to claim 4, wherein the control method further comprises the following steps: When the battery pack is in the charging mode of the battery swap station, the battery monitoring information is sent to the monitoring platform in the station. 6. The control method for the working mode of the battery-swappable battery in the power-swap station according to claim 4, wherein the control method further comprises the following steps: If the battery pack determines that the second message is not received periodically, it enters the driving mode; if the battery pack determines that the second message is received periodically, the battery pack determines whether It is in the charging mode of the swapping station, if otherwise, it enters the monitoring mode of the swapping station, and if so, the charging mode of the swapping station is maintained. 7. The control method for the working mode of the battery-swappable battery in the power-swap station according to claim 4, wherein the control method further comprises the following steps: After receiving the third message, the battery pack enters the monitoring mode of the battery swap station. 8 . The method for controlling the working mode of a battery swap in a battery swap station according to claim 7 , wherein the battery pack periodically sends battery monitoring information to both when the battery pack is in the battery swap station monitoring mode and the battery swap station charging mode. 9 . On-site monitoring platform. 9. A control system for a working mode of a battery swap in a battery swap station, wherein the control system is applied to a battery swap station, and the battery swap station includes an in-station monitoring platform and several groups of chargers and chargers that correspond one-to-one. The chargers in each group are communicatively connected with the battery packs installed in the charging bins; the monitoring platform in the station is communicatively connected with each of the chargers; The in-station monitoring platform is used to send a power-on command to the corresponding charger; The charger is configured to control the low-voltage power-on of the battery pack in the corresponding charging compartment after receiving the power-on command; The in-station monitoring platform is further configured to send a first message to the charger in response to the charging start instruction; The charger is further configured to forward the first message to the corresponding battery pack in the charging compartment after receiving the first message, so that the battery pack can receive the first message after receiving the first message. After a message, enter the charging mode of the battery swap station; Wherein, when the battery pack is installed in the charging compartment, the in-station monitoring platform is further configured to periodically send a second message to the charger corresponding to the charging compartment; The charger is further configured to forward the second message to the battery pack in the corresponding charging compartment after receiving the second message, so that the battery pack can determine whether the battery pack is not in the swap station. 10 . The control system for the working mode of the swapped battery in the swapping station according to claim 9 , wherein: 10 . The in-station monitoring platform is further configured to send a third message to the charger in response to the charging shutdown instruction; The charger is further configured to forward the third message to the corresponding battery pack in the charging compartment after receiving the third message, so that the battery pack can be used for receiving the third message. After three messages, it will enter the monitoring mode of the swap station. 11 . The control system for the working mode of a battery in a battery swapping station according to claim 9 , wherein the monitoring platform in the station is further configured to receive battery monitoring information sent by the battery pack. 12 . 12. A control system for a working mode of a battery swapping station in a battery swapping station, wherein the control system is applied to a battery pack, and the battery pack is used to enter the battery swapping station for charging after receiving the first message mode; the battery pack is also used to judge whether the second message is received periodically, so as to judge whether the battery pack is in the swap station. 13 . The control system for the working mode of a battery swapping station in a battery swapping station according to claim 12 , wherein the battery pack is further configured to send battery monitoring information to the monitoring platform in the station when it is in the charging mode of the battery swapping station. 14 . . 14 . The control system for the working mode of the battery swapping in a battery swapping station according to claim 12 , wherein, if the battery pack determines that the second message is not received periodically, and if it enters the driving mode, 14 . If the battery pack determines that the second message is received periodically, the battery pack is also used to determine whether it is in the charging mode of the swapping station, if not, enter the monitoring mode of the swapping station, and if so, keep the Swap station charging mode. 15 . The control system for the working mode of a battery in a battery swapping station according to claim 12 , wherein the battery pack is further configured to enter the monitoring mode of the battery swapping station after receiving the third message. 16 . 16 . The control system for the working mode of a battery in a battery swapping station according to claim 15 , wherein the battery pack is further configured to send batteries periodically when in the battery swapping station monitoring mode and the battery swapping station charging mode. 17 . The monitoring information is sent to the monitoring platform in the station.

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