JP-7855466-B2 - Battery management method and mobile

JP7855466B2JP 7855466 B2JP7855466 B2JP 7855466B2JP-7855466-B2

Inventors

松田義基

Assignees

カワサキモータース株式会社

Dates

Publication Date: 20260508
Application Date: 20220914

Claims (10)

A battery management method for managing multiple battery packs, each detachably mounted on the body of multiple mobile vehicles, using an external storage device, A processing circuit fixed to the vehicle body receives battery identification information for identifying the battery pack from the battery pack mounted on the vehicle body, The processing circuit stores the received battery identification information in a vehicle-side memory mounted on an external electrical component fixed to the vehicle body. The processing circuit stores state history information, which indicates the battery state history of the battery pack while it is mounted on the vehicle body, in the vehicle body memory , linked to the battery identification information. The processing circuit includes linking the state history information stored in the vehicle body memory with the battery identification information and transmitting it from the mobile device to the external storage device, The aforementioned external electrical equipment is an electrical equipment other than the battery pack mounted on the mobile body, and the battery management method includes a memory function and a function different from the memory function .
The battery management method according to claim 1, further comprising the processing circuit deleting part or all of the state history information from the vehicle-side memory after the transmission of the state history information to the external storage device has been completed.
The battery management method according to claim 1 or 2, wherein the state history information is information related to at least one of the battery's charge level, the battery's discharge current, and the battery's temperature.
The battery management method includes detecting information related to the battery state using at least one sensor before storing the state history information in the vehicle-side memory in association with the battery identification information. The process further includes classifying the battery state into one of a predetermined number of state categories based on information detected by at least one of the sensors, The processing circuit storing the state history information in the vehicle-side memory in association with the battery identification information includes storing the battery usage time corresponding to each state category as state history information in the vehicle-side memory. The battery management method according to claim 1 or 2 , wherein the usage time is the time the battery was used in the state of the battery corresponding to the state category .
It is a mobile object, A vehicle body with a removable battery pack, A vehicle-side memory mounted on an external electrical component fixed to the vehicle body, A first communication interface capable of communicating with the battery pack mounted on the vehicle body, A second communication interface capable of communicating with an external storage device, A processing circuit is provided, The aforementioned processing circuit is Receiving battery identification information for identifying the battery pack from the battery pack via the first communication interface, The received battery identification information is stored in the vehicle body's memory, The state history information, which indicates the battery state history of the battery pack while it is installed in the vehicle body, is stored in the vehicle body's memory, linked to the battery identification information. The system is configured to transmit the state history information stored in the vehicle body memory, linked with the battery identification information, to the external storage device via the second communication interface. The aforementioned external electrical components are electrical components other than the battery pack mounted on the mobile body, and the mobile body includes a memory function and a function different from the memory function .
Receiving the aforementioned battery identification information, when the battery pack is mounted on the vehicle body, the processing circuit receives from the battery pack the battery identification information of the battery pack and battery status information which is information indicating the state of the battery pack. The processing circuit includes generating state history information based on the battery state information received from the battery pack, which indicates the state history of the battery pack while it was mounted on the vehicle body. The battery management method according to claim 1 or 2, wherein the amount of data for the state history information is less than the amount of data for the battery state information.
The battery management method according to claim 1 or 2, wherein the state history information is stored in the vehicle-side memory, and the processing circuit stores the state history information as overwritable data in a portion of the storage area of the vehicle-side memory.
Receiving the aforementioned battery identification information, when the battery pack is mounted on the vehicle body, the processing circuit receives from the battery pack the battery identification information of the battery pack and battery status information which is information indicating the state of the battery pack. The processing circuit generates state history information based on the battery state information received from the battery pack, which indicates the state history of the battery pack while it was mounted on the vehicle body. The state history information is stored in the vehicle body memory, and the processing circuit stores the generated state history information in the vehicle body memory, linked to the battery identification information. The battery management method according to claim 1 or 2, further comprising the processing circuit continuing to update the state history information stored in the vehicle body memory with the generated state history information until the timing for communication connection with the external storage device is reached.
The aforementioned external electrical components include, as a function different from the memory function, a control function for controlling actuators or sensors provided on the vehicle body. The battery management method according to claim 1 or 2, wherein the control function includes one or more of the following: meter control, drive source control, brake control, suspension control, lamp control, radar control, camera control, and solenoid valve control.
The battery management method according to claim 1 or 2, wherein when the first battery pack, which is the battery pack mounted on the vehicle body, is changed to a second battery pack different from the first battery pack, the battery identification information and state history information of the second battery pack, in addition to the battery identification information and state history information of the first battery pack stored in the vehicle body memory, are linked together and stored in the vehicle body memory.

Description

This disclosure relates to a battery management method, a memory control device, a mobile device, and a server. Patent Document 1 discloses an electric vehicle equipped with a battery pack (battery unit) including a battery. The battery pack has a battery monitoring device that monitors the battery's condition. Patent No. 5898778 This is a schematic diagram showing the general configuration of a battery management system for implementing a battery management method according to one embodiment.Figure 1 is an example of a right-side view of an electric motorcycle.Figure 1 is a block diagram showing an example of the electrical system of an electric motorcycle.This block diagram shows the configuration of the mobile terminal and server in Figure 1.This is a flowchart showing the flow of the battery management method in the battery management system shown in Figure 1.This table shows an example of the frequency of each state category, indicated by the battery discharge current and battery charge level.This table shows an example of the frequency of each state category, indicated by battery temperature and battery charge level.This diagram shows an example of the data structure sent from the vehicle's electronic equipment to the server.This is an example of a histogram showing the frequency of belonging to a state category.This table shows an example of the frequency of belonging to a state category indicated by the battery charge level.This table shows an example of the frequency of belonging to a state category indicated by the battery's discharge current.This table shows an example of the frequency of each state category indicated by battery temperature.This table shows an example of the frequency of states belonging to the status categories indicated by the usage mode.Here is another example of a histogram showing the frequency of belonging to a state category. The embodiments will be described below with reference to the drawings. (System Overview) Figure 1 is a schematic diagram showing the general configuration of a battery management system 1 for implementing a battery management method according to one embodiment. The battery management system 1 is a system for managing multiple battery packs 30 that are detachably mounted on the bodies 11 of multiple mobile units 10 using a server 50. In this embodiment, an electric motorcycle 10 is described as an example of a mobile unit 10. The electric motorcycle 10 comprises a body 11 and a battery pack 30. The battery pack 30 is detachably mounted to the body 11. In this embodiment, the battery pack 30 can be attached to and detached from various vehicle bodies 11. For example, in the battery management system 1, if the battery charge of a battery pack 30 installed in an electric motorcycle 10 while it is running becomes low, the user of the vehicle body 11 can replace the low-charge battery pack 30 with another fully charged battery pack 30 at a designated battery pack station 2 or the like. In this embodiment of the battery management system 1, the usage history of the battery pack 30 is stored in the server 50. Specifically, status history information, which shows the history of the state of the battery pack 30 when it is mounted on the vehicle body 11, is initially stored in the memory 19b (see Figure 3) of the electronic equipment on the vehicle body 11. Then, when the electronic equipment on the vehicle body 11 and the user's mobile terminal 40 establish a communication connection, various information, including the status history information, is sent from the electric motorcycle 10 to the server 50 via the mobile terminal 40. The server 50 stores the received status history information, linked to battery identification information. For example, the status history information stored in the server 50 is used to analyze the state of the battery pack and to understand the usage trends of the battery pack. For example, the information stored in the server 50 can be accessed from an information terminal device 60 outside the server 50 via the internet or other means. The components of the battery management system 1 will be described sequentially below. (Electric motorcycle) Figure 2 is an example of a right side view of the electric motorcycle 10 shown in Figure 1. As shown in Figure 2, the electric motorcycle 10 comprises a body 11 and a battery pack 30. The battery pack 30 is detachable from the body 11. The vehicle body 11 is supported by the driven front wheels 12 and the driven rear wheels 13. An electric motor 14, which is the driving source for the vehicle, is supported on the vehicle body 11. The electric motor 14 generates the driving force transmitted to the rear wheels 13. The driving force generated by the electric motor 14 is transmitted to the rear wheels 13 via a power transmission mechanism 15. The power transmission mechanism 15 includes a transmission 15a that changes the rotation speed of the electric motor 14, and a mechanism 15b (for exampl