Battery pack, electrical hardware, and communication control method
First Claim
1. A battery pack used by removably connecting to a plurality of external hardware types each having a different communication protocol, the battery pack comprising:
- a secondary cell;
a connector removably connecting the battery pack to external hardware;
a memory storing a plurality of communication protocols;
a power discharge circuit performing discharge from the secondary cell to the external hardware;
an establisher connected via a line to the connector and communicating with the external hardware via the line and the connector, and establishing communication by specifying a usable communication protocol, among the communication protocols, that communicates with the external hardware; and
a controller causing the power discharge circuit to discharge electric power for driving the external hardware when the establisher has established communication with the external hardware,wherein the establisher transmits, via the line and the connector, a communication request signal to the external hardware requesting a response signal using one of the communication protocols, judges whether the response signal has been received from the external hardware via the line and the connector, and when judging that the response signal has been received, specifies the communication protocol used for transmitting the communication request signal as the usable communication protocol, and when judging that the response signal has not been received, sequentially transmitting, via the line and the connector, the communication request signal using different communication protocols until it is judged that the response signal has been received and specifying a communication protocol used for transmitting the communication request signal for the received response signal as the usable communication protocol.
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Accused Products
Abstract
A battery pack has a communicator storing various communication protocols. When new hardware is connected thereto, the battery pack sequentially transmits a respective communication request signal to request communication with the hardware using a stored communication protocol, and establishes communication. The battery pack transmits the communication request signal using a standard such as a compatibility priority among communication protocols, a frequency priority for communication protocols used according to a history record, a communication speed priority for communication protocols, and so on, thereby achieving quick establishment of communication.
39 Citations
19 Claims
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1. A battery pack used by removably connecting to a plurality of external hardware types each having a different communication protocol, the battery pack comprising:
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a secondary cell; a connector removably connecting the battery pack to external hardware; a memory storing a plurality of communication protocols; a power discharge circuit performing discharge from the secondary cell to the external hardware; an establisher connected via a line to the connector and communicating with the external hardware via the line and the connector, and establishing communication by specifying a usable communication protocol, among the communication protocols, that communicates with the external hardware; and a controller causing the power discharge circuit to discharge electric power for driving the external hardware when the establisher has established communication with the external hardware, wherein the establisher transmits, via the line and the connector, a communication request signal to the external hardware requesting a response signal using one of the communication protocols, judges whether the response signal has been received from the external hardware via the line and the connector, and when judging that the response signal has been received, specifies the communication protocol used for transmitting the communication request signal as the usable communication protocol, and when judging that the response signal has not been received, sequentially transmitting, via the line and the connector, the communication request signal using different communication protocols until it is judged that the response signal has been received and specifying a communication protocol used for transmitting the communication request signal for the received response signal as the usable communication protocol. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An electric hardware provided with a first connection terminal to which a battery pack is removably connectable, the battery pack being used by removably connecting to a plurality of external hardware types each having a different communication protocol, the battery pack comprising:
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a secondary cell; a second connection terminal connecting to the first connection terminal; a memory storing a plurality of communication protocols; a power discharge circuit performing discharge from the secondary cell to external hardware; an establisher connected via a line to the first connection terminal and the second connection terminal and communicating with the external hardware via the line, the first connection terminal and the second connection terminal, and establishing communication by specifying a usable communication protocol, among the communication protocols, that communicates with the electric hardware; and a controller causing the power discharge circuit to discharge, wherein when the establisher establishes communication with the battery pack, the electric hardware is driven by electric power discharged from the power discharge circuit, via the first connection terminal and the second connection terminal, the establisher transmits, via the line, the first connection terminal and the second connection terminal, a communication request signal to the external hardware requesting a response signal using one of the communication protocols, judges whether the response signal has been received from the external hardware, via the line, the first connection terminal and the second connection terminal, and when judging that the response signal has been received, specifies the communication protocol used for transmitting the communication request signal as the usable communication protocol, and when judging that the response signal has not been received, sequentially transmitting, via the line, the first connection terminal and the second connection terminal, the communication request signal using different communication protocols until it is judged that the response signal has been received and specifying a communication protocol used for transmitting the communication request signal for the received response signal as the usable communication protocol. - View Dependent Claims (18)
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19. A communication control method for a battery pack to communicate with a destination, the battery pack including a secondary cell and a power discharge circuit discharging electric power from the secondary cell and being removably connectable to a plurality of hardware types each having a different communication protocol, the destination being external hardware, the communication control method comprising:
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detecting a connection to the external hardware; specifying, when the connection to the external hardware is detected, a usable communication protocol that communicates with the external hardware, from among a plurality of communication protocols; establishing, using a line and a connector, communication with the external hardware using the given communication protocol when the usable communication protocol has been specified; and permitting discharge of electric power driving the external hardware by the power discharge circuit when communication has been established, wherein the establishing of the communication with the external hardware includes transmitting, via the line and the connector, a communication request signal to the external hardware requesting a response signal using one of the communication protocols, judging whether the response signal has been received from the external hardware, via the line and the connector, and when judging that the response signal has been received, specifying the communication protocol used for transmitting the communication request signal as the usable communication protocol, and when judging that the response signal has not been received, sequentially transmitting, via the line and the connector, the communication request signal using different communication protocols until it is judged that the response signal has been received and specifying a communication protocol used for transmitting the communication request signal for the received response signal as the usable communication protocol.
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Specification