Battery monitoring system, host controller, and battery monitoring device

1. A battery monitoring system comprising:

a plurality of battery monitoring devices are connected to a battery formed by connecting a plurality of battery cell groups in series to each other, and monitor a state of the battery for the respective battery cell groups, each of the plurality of battery cell groups being formed by one or a plurality of battery cells connected in series; and

a controller that performs wireless communication with the plurality of battery monitoring devices,

wherein first identification information portions which are different from each other are set in the plurality of battery monitoring devices in advance,

wherein second identification information corresponding to an order of potentials of the battery cell groups in the battery, to which the battery monitoring devices are connected, is assigned to each of the plurality of battery monitoring devices,

wherein the controller sequentially sets communication ranges, transmission electric powers, or antenna gains for performing wireless communication with the plurality of respective battery monitoring devices in the order of potentials on the basis of information set in advance,

wherein the plurality of battery monitoring devices sequentially transmit the first identification information portions to the controller in the order of potentials in accordance with the communication ranges, the transmission electric powers, or the antenna gains,

wherein the controller determines and stores a correspondence relationship between the first identification information and the second identification information on the basis of the first identification information portions which are sequentially transmitted from the plurality of battery monitoring devices in the order of potentials,

wherein the controller further stores distances and directions from the controller to a respective one of the battery monitoring devices in correspondence with the second identification information, and

wherein the controller sequentially sets antenna gains for performing wireless communication with the plurality of respective battery monitoring devices in the order of potentials on the basis of the distances and directions.

2. A battery monitoring system comprising:

a plurality of battery monitoring devices are connected to a battery formed by connecting a plurality of battery cell groups in series to each other, and monitor a state of the battery for the respective battery cell groups, each of the plurality of battery cell groups being formed by one or a plurality of battery cells connected in series;

a controller that performs wireless communication with the plurality of battery monitoring devices; and

an inspection device that can perform wireless communication with the plurality of battery monitoring devices and the controller,

wherein first identification information portions which are different from each other are set in the plurality of battery monitoring devices in advance,

wherein second identification information corresponding to an order of potentials of the battery cell groups in the battery, to which the battery monitoring devices are connected, is assigned to each of the plurality of battery monitoring devices,

wherein the inspection device sequentially performs a reading process of reading the first identification information and an assignment process of assigning the second identification information on the plurality of respective battery monitoring devices in the order of potentials, and transmits the first identification information read due to the reading process and the second identification information assigned due to the assignment process to the controller in correlation with each other for each battery monitoring device,

wherein the controller stores a correspondence relationship between the first identification information and the second identification information on the basis of the first identification information and the second identification information transmitted from the inspection device,

wherein the controller further stores distances and directions from the controller to a respective one of the battery monitoring devices in correspondence with the second identification information, and

wherein the controller sequentially sets antenna gains for performing wireless communication with the plurality of respective battery monitoring devices in the order of potentials on the basis of the distances and directions.

3. A controller which performs wireless communication with a plurality of battery monitoring devices that are connected to a battery formed by connecting a plurality of battery cell groups in series to each other, and that monitor a state of the battery for the respective battery cell groups, each of the plurality of battery cell groups being formed by one or a plurality of battery cells connected in series,

wherein the controller sequentially sets communication ranges, transmission electric powers, or antenna gains for performing wireless communication with the plurality of respective battery monitoring devices in an order of potentials of the battery cell groups in the battery, to which the battery monitoring devices are connected, on the basis of information set in advance, and performs wireless communication with each of the battery monitoring devices in accordance with a set result so as to assign a first identification information to each of the plurality of battery monitoring devices in the order of potentials,

wherein the controller further stores distances and directions from the controller to a respective one of the battery monitoring devices in correspondence with a second identification information, and

wherein the controller sequentially sets antenna gains for performing wireless communication with the plurality of respective battery monitoring devices in the order of potentials on the basis of the distances and directions.

4. The battery monitoring system of claim 1 , wherein the controller sequentially sets communication ranges for performing wireless communication with the plurality of respective battery monitoring devices in the order of potentials on the basis of the distances and directions.

5. The battery monitoring system of claim 1 , wherein the controller further stores transmission electric powers in correspondence with the second identification information.

6. The battery monitoring system of claim 5 , wherein the controller sequentially sets transmission electric powers for performing wireless communication with the plurality of respective battery monitoring devices in the order of potentials on the basis of the stored transmission electric powers.

7. The battery monitoring system of claim 5 , wherein the controller sequentially sets antenna gains for performing wireless communication with the plurality of respective battery monitoring devices in the order of potentials on the basis of the stored transmission electric powers.