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CN-121986536-A - Battery monitoring system, wireless communication program, and wireless communication method

CN121986536ACN 121986536 ACN121986536 ACN 121986536ACN-121986536-A

Abstract

A battery monitoring system (100) for transmitting and receiving battery information by wireless communication and monitoring a battery unit (20) includes wireless devices (30, 40) for transmitting and receiving information by wireless communication using a communication channel selected from a plurality of communication channels, and a storage device (44) for storing a channel map in which whether or not a plurality of communication channels are usable is set. The wireless device is configured to update a channel map based on a communication result in wireless communication, store the updated channel map in the storage device, and, at the start of the wireless communication, acquire the updated channel map stored in the storage device, and select the communication channel with reference to the updated channel map.

Inventors

  • Honda Yukito
  • Song Benxiang
  • Zhong Daozhao

Assignees

  • 株式会社电装

Dates

Publication Date
20260505
Application Date
20240912
Priority Date
20231006

Claims (15)

  1. 1. A battery monitoring system (100) that transmits and receives battery information and monitors battery sections (20, 21, 22) by wireless communication, comprising: A wireless device (30, 40) that transmits and receives information by wireless communication using a communication channel selected from a plurality of communication channels, and A storage device (44) for storing a channel map in which whether or not a plurality of communication channels are usable is set, The wireless device is configured to update a channel map based on a communication result in wireless communication, store the updated channel map in the storage device, and, at the start of the wireless communication, acquire the updated channel map stored in the storage device, and select the communication channel with reference to the updated channel map.
  2. 2. The battery monitoring system of claim 1, wherein, The wireless device performs connection processing for establishing a connection before the start of the wireless communication in which data communication for transmitting and receiving data relating to battery information is performed, and performs release processing for releasing the established connection when the wireless communication is ended, The wireless device acquires the updated channel map stored in the storage device during a period from when the connection process starts to before the data communication starts.
  3. 3. The battery monitoring system of claim 2, wherein, In the connection processing, one of a plurality of the slave units (30) and the master unit (40) in the wireless device transmits a connection request signal to the other, and when the connection request signal is transmitted and received, a connection is established between the master unit and the slave unit, In the connection processing, the wireless device acquires the updated channel map stored in the storage device during a period from when the connection request signal is transmitted and received until the connection establishment is completed.
  4. 4. The battery monitoring system of claim 2, wherein, The wireless device is configured to end the data communication and start the release process when a connection release request signal is received during the data communication, The updated channel map is stored in the storage device until the connection is released in the release process after the connection release request signal is received.
  5. 5. The battery monitoring system according to any one of claim 1 to 4, wherein, In the wireless communication, when a communication abnormality occurs, the channel map updated in the wireless communication is not stored in the storage device.
  6. 6. The battery monitoring system according to any one of claim 1 to 4, wherein, The wireless device does not save the updated channel map in the wireless communication in the storage device when the number of communication channels that can be used in the updated channel map is equal to or less than a predetermined threshold in the wireless communication.
  7. 7. The battery monitoring system according to any one of claim 1 to 4, wherein, In the wireless communication, the wireless device refers to the initialized channel map in the next wireless communication when communication abnormality occurs, or when the number of communication channels usable in the updated channel map is equal to or less than a predetermined threshold value, or when the updated channel map is not stored in the storage device.
  8. 8. The battery monitoring system according to any one of claim 1 to 4, wherein, The battery monitoring system is mounted on a vehicle (10), The wireless device saves only the channel map updated while the vehicle is stopped in the storage device.
  9. 9. The battery monitoring system according to any one of claim 1 to 4, wherein, The parent device of the plurality of wireless devices is configured to store the updated channel map in the storage device, read the updated channel map stored in the storage device when the wireless communication is started, and transmit the read updated channel map to the child device of the plurality of wireless devices.
  10. 10. The battery monitoring system of claim 9, wherein, The channel map is set for each of a plurality of the sub-machines, The master updates the channel map for each of the plurality of child machines and differentially saves the updated channel map for each of the plurality of child machines.
  11. 11. The battery monitoring system according to any one of claim 1 to 4, wherein, The wireless device starts the wireless communication when the battery monitoring system is started, In the wireless communication, when the battery monitoring system is stopped, the wireless communication is ended.
  12. 12. The battery monitoring system according to any one of claim 1 to 4, wherein, The storage means is a main storage means (44) capable of storing and holding the stored channel map even when the battery monitoring system is stopped, The wireless device has cache memories (32 a, 42 a) capable of temporary storage, stores the read updated channel map in the cache memories at the start of the wireless communication, performs updating based on a communication result while referring to the channel map stored in the cache memories in the wireless communication, and stores the updated channel map updated in the cache memories in a main storage at the end of the wireless communication.
  13. 13. The battery monitoring system according to any one of claim 1 to 4, wherein, When the number and configuration of the wireless devices are changed or when any one of the plurality of wireless devices is replaced with another wireless device, the communication channel is selected with reference to the initialized channel map at the start of the wireless communication.
  14. 14. A wireless communication program for implementing a wireless device (30, 40) of a battery monitoring system (100), The battery monitoring system transmits and receives battery information and monitors battery sections (20, 21, 22) by wireless communication, and includes: the wireless device which transmits and receives information by wireless communication using a communication channel selected from a plurality of communication channels, and A storage device (44) for storing a channel map in which whether or not a plurality of communication channels are usable is set, The following processing is performed in the wireless communication program: an updating process of updating a channel map based on a communication result in wireless communication; a saving process of saving the updated channel map updated by the updating process in the storage device; An acquisition process of acquiring the updated channel map stored in the storage device at the start of the wireless communication, and And a selection process of selecting a communication channel with reference to the updated channel map acquired in the acquisition process.
  15. 15. A wireless communication method, implemented by a wireless device (30, 40) of a power supply monitoring system (100), The battery monitoring system transmits and receives battery information and monitors battery sections (20, 21, 22) by wireless communication, and includes: the wireless device which transmits and receives information by wireless communication using a communication channel selected from a plurality of communication channels, and A storage device (44) for storing a channel map in which whether or not a plurality of communication channels are usable is set, The wireless communication method implements the following processing: an updating process of updating a channel map based on a communication result in wireless communication; a saving process of saving the updated channel map updated by the updating process in the storage device; An acquisition process of acquiring the updated channel map stored in the storage device at the start of the wireless communication, and And a selection process of selecting a communication channel with reference to the updated channel map acquired in the acquisition process.

Description

Battery monitoring system, wireless communication program, and wireless communication method Cross-reference to related applications The present application is based on Japanese patent application No. 2023-174396, filed on 6/10/2023, the contents of which are incorporated herein by reference. Technical Field The present disclosure relates to a battery monitoring system, a wireless communication program of the battery monitoring system, and a wireless communication method of the battery monitoring system. Background Conventionally, there is a battery system that transmits and receives battery information by wireless communication. In such a battery system, a communication channel is selected from a plurality of communication channels in accordance with a predetermined selection pattern, and data communication is performed. In the battery system, in order to appropriately select a communication channel according to the surrounding environment, a selection mode may be changed based on a communication result. Such a battery monitoring system is described in patent document 1, for example. Prior art literature Patent literature Patent document 1 Japanese patent application No. 6514694 Disclosure of Invention In addition, even when the selection mode is changed based on the communication result, the selection mode of the communication channel is decided in advance at the start of communication. Therefore, a communication channel cannot be properly selected according to the surrounding environment for a certain period of time from the start of communication, and communication errors tend to increase. The present disclosure has been made in view of the above circumstances, and a main object thereof is to provide a battery monitoring system, a wireless communication program, and a wireless communication method that can reduce communication errors. A first aspect of the present invention is a battery monitoring system for transmitting and receiving battery information by wireless communication and monitoring a battery unit, comprising a wireless device for transmitting and receiving information by wireless communication using a communication channel selected from a plurality of communication channels, and a storage device for storing a channel map in which whether or not a plurality of communication channels are usable is set, wherein the wireless device is configured to update the channel map based on a communication result in wireless communication, store the updated channel map in the storage device, and acquire the updated channel map stored in the storage device at the start of wireless communication, and select the communication channel with reference to the updated channel map. Thus, at the start of communication, the updated channel map is acquired, and the communication channel is selected with reference to the updated channel map. Therefore, at the start of communication, the communication channel can be appropriately selected by referring to the channel map reflecting the communication result in the previous wireless communication, and communication errors can be reduced. A second aspect for solving the above-described problems is a wireless communication program implemented by a wireless device of a battery monitoring system that transmits and receives battery information by wireless communication and monitors a battery section, the wireless device including the wireless device that transmits and receives information by wireless communication using a communication channel selected from a plurality of communication channels, and a storage device that stores a channel map for which whether or not a plurality of the communication channels are set can be used, the wireless communication program being configured to implement a process of updating the channel map based on a communication result in wireless communication, a save process of saving the post-update channel map updated by the update process in the storage device, an acquisition process of acquiring the post-update channel map saved in the storage device at the start of the wireless communication, and a selection process of selecting a communication channel with reference to the post-update channel map acquired in the acquisition process. Thus, at the start of communication, the updated channel map is acquired, and the communication channel is selected with reference to the updated channel map. Therefore, at the start of communication, the communication channel can be appropriately selected by referring to the channel map reflecting the communication result in the previous wireless communication, and communication errors can be reduced. A third aspect for solving the above-described problems is a wireless communication method implemented by a wireless device of a battery monitoring system that transmits and receives battery information by wireless communication and monitors a battery section, the wireless device including the wireless device that tra