JP6014015B2 - Battery information collecting apparatus and battery information collecting method - Google Patents

Description

  The present invention relates to a battery information collecting apparatus and a battery information collecting method for collecting information related to the batteries from a plurality of batteries.

  As is well known, as a power source for portable electronic devices, and as a power source for electric vehicles and hybrid vehicles, various types such as alkaline secondary batteries such as nickel metal hydride secondary batteries (storage batteries), lithium ion secondary batteries, etc. Secondary batteries (hereinafter, sometimes simply referred to as batteries) are used.

  By the way, in an automobile, an assembled battery composed of a plurality of batteries is provided as a power source, and charging / discharging of each battery constituting such an assembled battery is controlled based on battery information such as the voltage of the batteries. For example, Patent Document 1 describes an example of a technique for acquiring battery information of each battery.

  A voltage measuring device (voltage measuring unit) described in Patent Document 1 is connected in series with each other via a relay signal line, and sequentially detects voltage information indicating a voltage between terminals of the battery block, and a first output A voltage request signal is output to the voltage detection unit via the signal line, and a voltage information collection unit that receives voltage information relayed by the voltage detection unit via the first input signal line is provided. The voltage detector sequentially relays voltage information in a serial manner via the relay signal line. The voltage information collection unit inputs voltage information from the voltage detection unit corresponding to the output voltage request signal. In addition, when the response from the voltage detection unit corresponding to the voltage request signal output via the first output signal line is an error, the voltage information collection unit adds a new voltage to the voltage detection unit via the second output signal line. Outputs a request signal. That is, the voltage request signal can be output to the voltage detector corresponding to the second output signal line.

Japanese Patent No. 4857301

  In the voltage measuring device described in Patent Document 1, as described above, even when an error occurs in communication via the first output signal line, the voltage request signal is transmitted to the voltage detection unit by communication via the second output signal line. The voltage can be acquired by outputting.

  However, in the apparatus described in this document, the wiring becomes complicated when the number of the second output signal lines increases, and conversely, when the number of the second output signal lines is small, a plurality of batteries are provided for one second output signal line. Will respond. For this reason, if an abnormality occurs in communication, battery information from the battery included between the position where the abnormality has occurred and the next second output signal line may not be acquired.

In addition, the battery information to be acquired in this way is not limited to the voltage, and the same applies to information on current, temperature, and the like.
The present invention has been made in view of such circumstances, and its purpose is to collect battery information of more batteries even when an abnormality occurs in communication while suppressing complication of wiring. It is an object of the present invention to provide a battery information collecting apparatus and a battery information collecting method.

A battery information collecting device that solves the above-described problem is associated with each of a plurality of battery blocks, detects the state of the battery of the associated battery block, and uses the detected battery state as battery information. A plurality of battery state detection units that output to a communication line that is connected to the mold, and a first communication unit and a second communication unit that are bus connected to the communication line, and the first and second communication units. A battery information collection unit that collects battery information output from the plurality of battery state detection units via a unit, and the communication line is assigned to one or more of the plurality of battery state detection units and assigned A plurality of connecting lines having branch lines to which the battery state detecting unit is connected in a bus form, a connecting line connecting the connecting lines, and a connection connecting the first communication unit to one of the connecting lines Line and the communication line A connection line for connecting the second communication section to one of the connection lines, and one connection line side connection section provided so as to be connectable to each corresponding connection line at both ends of the connection line; A pair of connection lines connected to the same connection line are configured to be detachable from one connection line side connection portion provided so as to be connectable to the connection line, and the battery information collection unit includes the first connection line The combination of the battery information collected through the first communication unit and the battery information collected through the second communication unit is “normal”, “abnormality due to disconnection of communication line”, “connection on the communication line side” Is stored in the storage unit in advance and collected via the first communication unit. The stored battery information and the combination of the battery information collected via the second communication unit In comparison with the information stored in the above, the abnormality that occurred is the "abnormality due to disconnection of the communication line", the "abnormality due to disconnection between the connection line side connection part and the connection line side connection part" and the "battery state The gist is to determine which of the “abnormality of the detection unit” .

A battery information collecting method that solves the above-described problem is associated with each of a plurality of battery blocks, detects the state of the battery of the associated battery block, and uses the detected battery state as battery information. A plurality of battery state detection units that output to a communication line that is connected to the mold, and a first communication unit and a second communication unit that are bus connected to the communication line, and the first and second communication units. A battery information collection unit that collects battery information output from the plurality of battery state detection units via a unit, and the communication line is assigned to one or more of the plurality of battery state detection units connecting a plurality of communication lines, and connection lines for connecting the connecting line between the first communication unit to one of said connecting line with a branch line to the battery state detection unit assigned Ru connected bus type With connecting lines One connection line side connection that is connected in series with a connection line that is connected to the second communication unit to the other one of the connection lines, and that can be connected to each corresponding connection line at both ends of the connection line Battery information collecting method for detachably connecting a connecting portion and a connecting line side connecting portion provided so that a pair of connecting lines connected to the same connecting line can be connected to the connecting line, the battery information In the collection unit, combinations of battery information collected via the first communication unit and battery information collected via the second communication unit are set to “normal”, “abnormality due to disconnection of communication line” ”,“ Abnormality due to disconnection between connecting line side connecting portion and connecting line side connecting portion ”, and“ abnormality of battery state detecting portion ”are stored in advance in the storage portion, and the plurality of batteries The battery information output from the state detection unit is sent to the first and second battery information collection units. Causes collected from both signal portions, said first information a combination of the collected battery information via the cell information and the second communication unit that is collected via the communication unit stored in the storage unit By comparing, the abnormalities that occurred are the above-mentioned "abnormalities due to disconnection of the communication line", the "abnormalities due to disconnection between the connection line side connection part and the connection line side connection part", and the "abnormality of the battery state detection part" The gist is to determine which is the case .

  According to such a configuration or method, since the communication line is a bus type, even if an abnormality occurs in the battery state detection unit that is bus-type connected to the communication line, the communication line including the communication line is normally maintained. . Even if the communication line is disconnected, the battery information output from the battery state detection unit is collected by the battery information collection unit via the first or second communication unit. Furthermore, even if the connection line side connection unit and the connection line side connection unit are separated, the battery information output from the battery state detection unit other than the detached battery state detection unit is collected in the battery information collection unit. As a result, the battery information collection device collects battery information of a larger number of batteries even when an abnormality occurs in the collection of the battery information through the communication line while suppressing the complexity of the wiring due to the multiplexing of the wiring. be able to.

  Also, when an abnormality occurs in these communication lines, the normal battery information collected via the first communication unit and the second communication unit is different from the combination of the battery state detection units that output it. Occurs. Therefore, based on such a difference in combination, it is possible to specify the type of abnormality that has occurred and the position where the abnormality has occurred regarding the abnormality related to communication through the communication line.

In addition, as a connection line side connection part and a connection line side connection part, the connector for connection of wiring, a communication line, etc. are specifically mentioned .

Furthermore, according to such a configuration or method, any one of abnormality due to disconnection of the communication line, abnormality due to separation of the connection line side connection part and the connection line side connection part, and abnormality of the battery state detection part, The determination is based on the normal / abnormal battery information collected by the two communication units, that is, the difference in the combination of the battery state detection units corresponding to the normal or abnormal battery information. Thereby, it becomes easy to grasp and manage the abnormality that has occurred in the battery information collecting device.
As a preferred configuration, each of the plurality of communication lines is assigned to each of the plurality of battery state detection units.
As a preferred method, one of the plurality of communication lines is assigned to each of the plurality of battery state detection units.
According to such a configuration or method, a communication line is provided for each battery state detection unit.
As a result, the accuracy of specifying the position where the abnormality has occurred can be improved.

Preferred configuration in the storage unit, the combination of the battery information collected via the first and second communication unit, the "abnormality due to a communication line disconnection", into contact with the "contact line side connecting portion abnormality due withdrawal of the connection line side connecting portion ", and the information to be associated with the occurrence to have the position of the corresponding abnormality is further stored within the" abnormal battery state detection unit ", the battery information acquisition unit the "abnormality due to a communication line disconnection", the "a contact line side connecting portion abnormality by disengagement of the connection line side connecting portion", and any one of the abnormality occurrence of the "abnormal battery state detector" When it is determined that the abnormality is occurring, the position where the abnormality occurs is specified.

In a preferred method, in the storage unit, the combination of the battery information collected via the first and second communication unit, the "abnormality due to a communication line disconnection", into contact with the "contact line side connecting portion abnormality due withdrawal of the connection line side connecting portion ", and further stores the corresponding information associated with the occurring position of abnormality of said" abnormal battery state detector ", in the battery information acquisition unit, the "abnormality due to a communication line disconnection", the "abnormality due to separation of the contact wire-side connecting portion and the connection line side connecting portion", and the one of error in "abnormal battery state detection unit" is generated When it is determined that the position is abnormal, the position where the abnormality occurs is specified.

  According to such a configuration or method, the battery information normal / abnormality of the battery information collected by the two communication units at the position where the abnormality has occurred, that is, the battery state detection unit corresponding to the normal or abnormal battery information It is specified based on the difference in the combination. Thereby, it becomes easy to grasp and manage the abnormality occurring in the battery information collecting device.

  As a preferred configuration, positions of the plurality of battery state detection units connected by bus to the communication line on the communication path from the first communication unit to the second communication unit from the first to the nth ( n is a positive integer), the battery information collection unit determines whether the battery information obtained from each battery state detection unit is “normal” or “abnormal”, and the first communication unit starts from the first n The battery information obtained from each of the battery status detection units up to the “th” is “normal”, and the battery information obtained from each of the nth to first battery status detection units in the second communication unit is “normal”. Battery information obtained from the m-th (m is a positive integer less than or equal to n) to n-th battery state detection units in the first communication unit. Is “abnormal” and Based on the fact that the battery information obtained from the m-th to first battery state detection units in the second communication unit is “abnormal” and the other battery information is “normal”, the m th It is determined that the “abnormality caused by the disconnection between the connection line side connection portion and the connection line side connection portion” corresponding to the battery state detection portion of the first communication portion. Battery information obtained from each of the battery state detection units up to an integer) is “abnormal”, and the battery information obtained from the p−1th to first battery state detection units in the second communication unit is Based on the fact that it is “abnormal” and the other battery information is “normal”, it is determined as “abnormality due to disconnection of communication line” between the p−1th and pth, and the first Power from the mth battery state detector If the pond information is "abnormal"
In both cases, the battery information obtained from the m-th battery state detection unit in the second communication unit is “abnormal”, and the “battery state detection unit abnormality” is described for the m-th battery state detection unit. judge.

  According to such a configuration, based on the normal / abnormal state of the communication data collected via the first communication unit and the second communication unit, the type of abnormality and the occurrence of the abnormality are generated for the state. Can be identified.

  According to the battery information collecting apparatus and the battery information collecting method, it is possible to collect battery information of a larger number of batteries even when an abnormality occurs in communication while suppressing complication of wiring.

The block diagram which shows typically the schematic structure about one Embodiment of a battery information collection apparatus. The figure which shows the mode of normal / abnormal of each data collected by the main communication part and a sub communication part, when the state of the battery information collection apparatus is normal. The schematic diagram which shows the example which has abnormality in the 4th voltage measurement part in the battery information collection device. The figure which shows the aspect of normal / abnormal of each data collected by the main communication part and a sub communication part, when there is abnormality in the 4th voltage measurement part as shown in FIG. The schematic diagram which shows the example in which the connector omission has arisen in the 4th voltage monitoring part in the battery information collection apparatus. FIG. 6 is a diagram illustrating a normal / abnormal state of each data collected by the main communication unit and the sub communication unit when a connector disconnection occurs in the fourth voltage monitoring unit as illustrated in FIG. 5. The schematic diagram which shows the example which has disconnected between the 3rd voltage measurement part in the battery information collection apparatus, and the 4th voltage measurement part. As shown in FIG. 7, when the third voltage measurement unit and the fourth voltage measurement unit are disconnected, the normal / abnormal state of each data collected by the main communication unit and the sub communication unit is shown. FIG. The figure which shows the conditions for determining the state of the battery information collection device. The figure which shows the conditions for determining the state of the battery information collection device. The figure which shows the conditions for determining the state of the battery information collection device. The flowchart which shows the process for determining the normality / abnormality of the communication line in the battery information collection device. The flowchart which shows the process which determines the normal / abnormality of the data which the main communication part in the battery information collection device collects. The flowchart which shows the process which determines the normal / abnormality of the data which the sub communication part in the battery information collection apparatus collects.

  An embodiment of a battery information collection device will be described with reference to FIGS. Note that the battery information collection device of the present embodiment collects battery information from an assembled battery including a plurality of batteries that supplies electric power to an electric motor serving as a power source or an auxiliary power source of an electric vehicle or a hybrid vehicle. An example of the acquisition will be described.

  As shown in FIG. 1, the battery information collection device according to the present embodiment is connected to a battery group 10 of a vehicle, and voltage measurement units as a plurality of battery state detection units that measure voltages as battery information from the battery group 10. 201-206. In addition, the battery information collection device is connected to the plurality of voltage measurement units 201 to 206 through a communication line so as to be communicable, and as a battery information collection unit that collects each voltage value measured by each voltage measurement unit 201 to 206. The voltage information collecting unit 30 is provided. Note that the communication line is a so-called bus-type communication line that can connect the voltage measuring units 201 to 206 and the voltage information collecting unit 30 in a bus-type connection. As a communication method using such a bus-type communication line, there are a controller area network (CAN), Ethernet 10BASE2, etc., but there are various communication methods such as other general-purpose communication methods and dedicated communication methods. Also good.

  The battery group 10 includes a plurality of battery blocks B1 to B6, and the corresponding first to sixth voltage measuring units 201 to 206 can measure the inter-terminal voltages of the plurality of battery blocks B1 to B6. It has become. Examples of such battery blocks B1 to B6 include those in which a plurality of battery modules composed of a plurality of single cells are connected in series.

  The first to sixth voltage measuring units 201 to 206 measure (monitor) the inter-terminal voltages of the battery blocks B1 to B6 connected to the first to sixth voltage measuring units 201 to 206, and the voltage information collecting unit displays the measured (monitored) voltage. Output to 30. That is, the first to sixth voltage measuring units 201 to 206 are associated with each of the plurality of battery blocks B1 to B6, and detect the voltage between the terminals of the associated battery blocks B1 to B6 as the state of the battery. To do. More specifically, the first voltage measuring unit 201 measures the voltage between the terminals of the battery block B1, the second voltage measuring unit 202 measures the voltage between the terminals of the battery block B2, and the third voltage measuring unit 203 The voltage between terminals of battery block B3 is measured. The fourth voltage measurement unit 204 measures the voltage across the terminals of the battery block B4, the fifth voltage measurement unit 205 measures the voltage across the terminals of the battery block B5, and the sixth voltage measurement unit 206 serves as the battery block. The terminal voltage of B6 is measured. In addition, since the 1st-6th voltage measurement parts 201-206 have the same structure, below, when it is not necessary to distinguish the 1st-6th voltage measurement parts 201-206, it is only a voltage. This is referred to as a measurement unit 20.

  The voltage measuring unit 20 inputs a voltage monitoring unit 21 that measures (monitors) a voltage between terminals of the associated battery block, and a voltage measured (monitored) by the voltage monitoring unit 21, and the input voltage is converted into a voltage. And a communication unit 22 that outputs the information to the information collection unit 30. In addition, the voltage measuring unit 20 includes a connecting line 24 constituting a part of a bus-type communication line, a measuring unit connector 23 as a connecting line side connecting unit to which both ends of the connecting line 24 are connected, and a connecting line 24. And a branch line 25 for connecting the communication unit 22 in a bus type.

  The voltage monitoring unit 21 is connected to the output terminal of the corresponding battery block, measures the voltage between the output terminals, and outputs the measured voltage value to the communication unit 22. The voltage monitoring unit 21 measures the voltage between the terminals according to at least one of a predetermined interval and a request from the voltage information collecting unit 30.

  The communication unit 22 exchanges communication data with a bus-type communication line, that is, with the communication line 24. The communication unit 22 can transmit the measurement value input from the voltage monitoring unit 21 to the bus-type communication line as communication data. That is, the measurement value is transmitted from the communication unit 22 to the voltage information collection unit 30 as communication data. The communication unit 22 can receive communication data transmitted to a bus-type communication line. For example, the communication unit 22 can receive a signal transmitted from the voltage information collection unit 30 or the like from a bus-type communication line, that is, the communication line 24.

  The communication line 24 is assigned to the voltage measuring unit 20 while constituting a part of the bus-type communication line as described above. Further, since the communication line 24 is a bus-type communication line, communication data can be transmitted regardless of the operating state of the communication unit 22 and the voltage monitoring unit 21 connected to the communication line 24 in a bus type.

  The measurement unit connector 23 is a connector for connecting wiring and communication lines. In order to incorporate the communication line 24 into a part of the bus type communication line, an external communication line connected in series to the voltage information collecting unit 30 is used. It is a connector to be connected. The measurement unit connector 23 mechanically integrates both ends of a connection line 24 to which an external communication line is connected. That is, the measurement unit connector 23 is provided at both ends of the communication line 24 so as to be connectable to the corresponding external communication lines (connection lines). In this way, both ends of the connection line 24 are mechanically integrated by the measuring unit connector 23, so that each external communication line connected to both ends of the connection line 24 is also mechanically integrated by the corresponding connector. It becomes possible to connect to the measurement unit connector 23 in the form of the change.

  The voltage information collection unit 30 collects measurement values of voltages output from the plurality of voltage measurement units 20 through communication via a communication line. The voltage information collection unit 30 collects and measures data between the information processing unit 31 and the information processing unit 31 for collecting voltage measurement values and performing predetermined processing on the collected voltage measurement values. A main communication unit 32 as a possible first communication unit and a sub communication unit 33 as a second communication unit are provided.

  The information processing unit 31 is mainly configured by a microcomputer having a calculation unit, a storage unit, and the like. The information processing unit 31 performs various information processing based on various data and programs stored in the storage unit or the like, thereby calculating information related to charge / discharge control, for example. In the present embodiment, the storage unit stores (holds) a program and various information for determining an abnormality related to communication with the voltage measurement unit. The information processing unit 31 performs processing for calculating information related to charge / discharge control and determining an abnormality related to communication with the voltage measurement unit 20. The information processing unit 31 performs transmission / reception processing of communication data via the main communication unit 32 and the sub communication unit 33. Therefore, the information processing section 31 can generate communication data to be transmitted to the bus type communication line based on a predetermined process. The information processing unit 31 can store communication data received from a bus-type communication line, and can process the stored communication data.

  The main communication unit 32 is bus-type connected to a bus-type communication line, and transmits / receives communication data via the connected communication line. The sub-communication unit 33 is bus-type connected to a bus-type communication line, and transmits / receives communication data via the connected communication line. The main communication unit 32 and the sub communication unit 33 are connected to the same bus type communication line. Therefore, for example, the main communication unit 32 and the sub communication unit 33 can cause the other communication unit to receive communication data transmitted from one of the communication units via the same bus type communication line. Further, the main communication unit 32 and the sub communication unit 33 can receive (collect) communication data transmitted from each voltage measurement unit 20 connected to a bus type communication line. Further, the main communication unit 32 and the sub communication unit 33 can transmit (output) communication data to each voltage measurement unit 20.

  In addition, the voltage information collecting unit 30 constitutes a part of the bus type communication line, and similarly to the first terminal line 35 that is an end part of the bus type communication line, similarly, a part of the bus type communication line. And a second terminal line 37 serving as an end of a bus-type communication line. One end of the first terminal line 35 is disposed on the collecting unit connector 34 so that an external communication line can be connected, while the other end is a terminal. The communication unit is not connected beyond the cage. Similarly, one end of the second terminal line 37 is disposed on the collecting unit connector 34 so that an external communication line can be connected, while the other end is terminated. The communication unit is not connected beyond that. Therefore, the bus-type communication line configured to include the first terminal line 35 and the second terminal line 37 has one end formed by the first terminal line 35 and the other end connected to the first terminal line 35. 2 terminal lines 37. In other words, the bus-type communication line is configured in a loop shape in such a manner that the voltage information collection unit 30 includes its start point and end point. That is, the main communication unit 32 is bus-type connected to the first terminal line 35 via the branch line 36, and the sub communication unit 33 is bus-type connected to the second terminal line 37 via the branch line 38. The Therefore, in the bus type communication line, the main communication unit 32 connected to the first terminal line 35 by bus type is arranged at one endmost position, and the second terminal line 37 is connected to the other end position. A sub-communication unit 33 connected in a bus type is arranged.

  The collecting unit connector 34 is a connector for connecting wires and communication lines, and is an external communication line for incorporating the first terminal line 35 and the second terminal line 37 into a bus-type communication line. It is a connector for connecting the first and second collection lines 41 and 42 as connection lines. The first and second collection lines 41 and 42 are communication lines that connect the voltage information collection unit 30 in series with the connection line 24 of the voltage measurement unit 20.

  The collector connector 34 mechanically integrates one end of the first terminal line 35 and one end of the second terminal line 37 as a set. That is, the collector connector 34 is provided so as to be connectable to the corresponding first and second collection lines 41 and 42 at both ends of the first terminal line 35 and the second terminal line 37. In this way, the first and second collection lines 41 and 42 connected to the voltage information collection unit 30 are made by combining the first terminal line 35 and the second terminal line 37 with the collection unit connector 34. In addition, the pair of end portions connected to the voltage information collection unit 30 can be connected to the collection unit connector 34 in a manner in which the pair of corresponding connectors is combined into one set.

Next, the configuration of the bus type communication line of the present embodiment will be described.
In the bus-type communication line of the present embodiment, one end is constituted by the first terminal line 35 and the other end is constituted by the second terminal line 37. Therefore, the configuration of the bus-type communication line will be described in the order from the first terminal line 35 to the second terminal line 37. The bus-type communication line includes a first terminal line 35 of the voltage information collection unit 30, a first collection line 41 connecting the voltage information collection unit 30 and the first voltage measurement unit 201, and a first voltage. The connection line 24 assigned to the measurement unit 201 and the first crossover 441 as a connection line connecting the first voltage measurement unit 201 and the second voltage measurement unit 202 are connected in series. In addition, the bus-type communication line includes the connection line 24 assigned to the second voltage measurement unit 202, the second voltage measurement unit 202, and the third voltage measurement unit 203 following the first crossover line 441. A second connecting line 442 as a connecting line for connecting to the second connecting line 24, a connecting line 24 assigned to the third voltage measuring unit 203, and the third voltage measuring unit 203 and the fourth voltage measuring unit 204. A third connecting wire 443 serving as a connecting line is connected in series. In addition, the bus-type communication line includes the connection line 24 assigned to the fourth voltage measurement unit 204, the fourth voltage measurement unit 204, and the fifth voltage measurement unit 205 following the third crossover line 443. A fourth connecting line 444 serving as a connecting line for connecting the second connecting line 24, the connecting line 24 assigned to the fifth voltage measuring unit 205, and the fifth voltage measuring unit 205 and the sixth voltage measuring unit 206. A fifth connecting line 445 as a connecting line is connected in series. Then, the bus-type communication line is connected to the connection line 24 assigned to the sixth voltage measuring unit 206, the sixth voltage measuring unit 206, and the voltage information collecting unit 30 following the fifth connecting line 445. The second collection line 42 to be connected and the second terminal line 37 of the voltage information collection unit 30 are connected in series. That is, the bus-type communication line includes the first to sixth voltage measurement units 201 between the position where the main communication unit 32 is connected by the branch line 36 and the position where the sub communication unit 33 is connected by the branch line 38. Each connection line 24 assigned to ˜206 is connected in series.

  The first collection line 41 that connects the voltage information collection unit 30 and the first voltage measurement unit 201, and the second collection line 42 that connects the sixth voltage measurement unit 206 and the voltage information collection unit 30. The end connected to each voltage information collection unit 30 is mechanically integrated by an external connector 40 as a connection unit. The external connector 40 is a connector for connecting wiring and communication lines. Therefore, the ends of the first collection line 41 and the second collection line 42 mechanically integrated by the external connector 40 and the first terminal line mechanically integrated by the collection unit connector 34. 35 and the second terminal line 37 are connected. That is, in the external connector 40, a pair of first collection line 41 and second collection line 42 connected to the first terminal line 35 and the second terminal line 37 are connected to the terminal lines 35 and 37, respectively. It is provided so that it can be connected. As a result, the first terminal line 35 and the second terminal line 37 and the first collection line 41 and the second collection line 42 are connected / disconnected between the collector connector 34 and the external connector 40. It is integrally managed by connection / disconnection (connector disconnection), that is, attachment / detachment.

  The respective ends of the first collection line 41 and the first crossover line 441 connected to the first voltage measurement unit 201 are mechanically integrated by an external connector 431 serving as a connection line side connection unit. ing. Therefore, the first voltage measurement unitized mechanically by the measuring unit connector 23 and the end portions of the first collection line 41 and the first crossover line 441 mechanically integrated by the external connector 431. Both ends of the connecting line 24 of the unit 201 are connected. That is, the external connector 431 is provided so that a pair of first collection lines 41 and first crossover lines 441 connected to the same connection line 24 can be connected to the connection line 24. Thereby, both ends of the connection line 24 of the first voltage measurement unit 201 and the first collection line 41 and the first crossover line 441 are connected / disconnected between the measurement unit connector 23 and the external connector 431. It is integrally managed by connection / disconnection (connector disconnection), that is, attachment / detachment.

  The ends of the first and second connecting wires 441 and 442 connected to the second voltage measuring unit 202 are mechanically integrated by an external connector 432 serving as a connecting wire side connecting portion. . That is, the external connector 432 is provided so that a pair of first and second connecting lines 441 and 442 connected to the same connecting line 24 can be connected to the connecting line 24. As a result, both ends of the connecting line 24 of the second voltage measuring unit 202 and the first and second connecting lines 441 and 442 are connected / disconnected between the measuring unit connector 23 and the external connector 432. It is integrally managed by connection / disconnection (connector disconnection), that is, attachment / detachment.

  The ends of the second and third connecting wires 442 and 443 connected to the third voltage measuring unit 203 are mechanically integrated by an external connector 433 serving as a connecting wire side connecting portion. . That is, the external connector 433 is provided so that a pair of second connecting wire 442 and third connecting wire 443 connected to the same connecting wire 24 can be connected to the connecting wire 24. Thereby, both ends of the connecting line 24 of the third voltage measuring unit 203 and the second connecting line 442 and the third connecting line 443 are connected / disconnected between the measuring unit connector 23 and the external connector 433. It is integrally managed by connection / disconnection (connector disconnection), that is, attachment / detachment.

  The ends of the third connecting wire 443 and the fourth connecting wire 444 connected to the fourth voltage measuring unit 204 are mechanically integrated by an external connector 434 as a connecting wire side connecting portion. . That is, the external connector 434 is provided such that a pair of third and fourth connecting wires 443 and 444 connected to the same connecting line 24 can be connected to the connecting line 24. As a result, both ends of the connection line 24 of the fourth voltage measuring unit 204 and the third connecting line 443 and the fourth connecting line 444 are connected / disconnected between the measuring unit connector 23 and the external connector 434. It is integrally managed by connection / disconnection (connector disconnection), that is, attachment / detachment.

  The ends of the fourth connecting wire 444 and the fifth connecting wire 445 connected to the fifth voltage measuring unit 205 are mechanically integrated by an external connector 435 as a connecting wire side connecting portion. . That is, the external connector 435 is provided so that a pair of fourth and fifth connecting lines 444 and 445 connected to the same connecting line 24 can be connected to the connecting line 24. Thereby, both ends of the connecting line 24 of the fifth voltage measuring unit 205 and the fourth connecting line 444 and the fifth connecting line 445 are connected / disconnected between the measuring unit connector 23 and the external connector 435. It is integrally managed by connection / disconnection (connector disconnection), that is, attachment / detachment.

  The ends of the fifth crossover line 445 and the second collection line 42 connected to the sixth voltage measurement unit 206 are mechanically integrated by an external connector 436 as a connection line side connection unit. . That is, the external connector 436 is provided so that a pair of fifth connecting lines 445 and the second collection line 42 connected to the same connection line 24 can be connected to the connection line 24. As a result, both ends of the connection line 24 of the sixth voltage measurement unit 206 and the fifth connecting line 445 and the second collection line 42 are connected / disconnected between the measurement unit connector 23 and the external connector 436. It is integrally managed by connection / disconnection (connector disconnection), that is, attachment / detachment.

The external connectors 431 to 436 are connectors for connecting wirings and communication lines.
Next, with reference to FIGS. 2-8, the aspect of the communication data for every state of the voltage information collection apparatus acquired in the voltage information collection part 30 is demonstrated.

First, the case where the state of the voltage information collection device is normal will be described with reference to FIG.
As shown in the list 50, the main communication unit 32, the sub communication unit 33, the first to sixth voltage measurement units 201 to 206, and the bus type communication line are all normal. At this time, as shown in the list 50, the voltage information collection unit 30 acquires the data via the main communication unit 32, thereby acquiring the main communication unit 32, the first to sixth voltage measurement units 201 to 206, and the sub communication unit. Normal data is acquired from 33. The voltage information collection unit 30 acquires normal data from the sub communication unit 33, the first to sixth voltage measurement units 201 to 206, and the main communication unit 32 by communication via the sub communication unit 33. The main communication from the normal data from the main communication unit 32 acquired by communication via the main communication unit 32 and the normal data from the sub communication unit 33 acquired by communication via the sub communication unit 33 is used. It can be determined that the unit 32 and the sub-communication unit 33 are normal.

Further, with reference to FIG. 3 and FIG. 4, a case where an abnormality has occurred in the fourth voltage measurement unit 204 as a state of the voltage information collection device will be described.
FIG. 3 shows a case where an abnormality has occurred in the fourth voltage measurement unit 204. At this time, the abnormality of the communication data occurring in the fourth voltage measurement unit 204 includes an abnormality in which the communication data is not output and a case where the content of the communication data is abnormal. As a cause of such an abnormality, there is an abnormality of the voltage measuring unit 20 including an abnormality of the voltage monitoring unit 21 or an abnormality of the communication unit 22. In the following, the communication data abnormality includes an abnormality in which the communication data is not output and a case in which the content of the communication data is abnormal.

  As shown in the list 51 of FIG. 4, at this time, the voltage information collection unit 30 passes through the main communication unit 32 and the main communication unit 32, first to third, fifth, and sixth voltage measurement units 201 to 203. , 205, 206 and the sub-communication unit 33, normal data is acquired. In the voltage information collecting unit 30, the sub communication unit 33, the first to third, fifth and sixth voltage measurement units 201 to 203, 205, 206 and the main communication unit 32 are connected via the sub communication unit 33. Normal data is acquired. On the other hand, in the voltage information collection unit 30, the data from the fourth voltage measurement unit 204 is acquired in an abnormal form, whether through the main communication unit 32 or the sub communication unit 33.

  In addition, with reference to FIG. 5 and FIG. 6, a case where the measurement unit connector 23 of the fourth voltage measurement unit 204 and the external connector 434 are in a non-contact state, that is, a so-called connector disconnection, as the state of the voltage information collection device will be described.

  As shown in FIG. 6, even if the fourth voltage measurement unit 204 is normal, the third crossover line in which both ends of the connection line 24 of the fourth voltage measurement unit 204 are connected in series to the main communication unit 32. Neither 443 nor the fourth connecting line 444 connected in series to the sub-communication unit 33 is connected, so the fourth voltage measurement unit 204 is separated from the bus-type communication line.

  As shown in the list 52 of FIG. 6, at this time, the voltage information collection unit 30 receives normal data from the main communication unit 32 and the first to third voltage measurement units 201 to 203 via the main communication unit 32. On the other hand, the acquired data for the fourth to sixth voltage measuring units 204 to 206 and the sub-communication unit 33 become abnormal data because new data cannot be acquired. In the voltage information collection unit 30, normal data is acquired from the sub communication unit 33 and the fifth and sixth voltage measurement units 205 and 206 via the sub communication unit 33. As for the voltage measuring units 201 to 204 and the main communication unit 32, the acquired data becomes abnormal data because new data cannot be acquired. That is, in the voltage information collection unit 30, the communication data from the fourth voltage measurement unit 204 is acquired in an abnormal form, whether via the main communication unit 32 or the sub communication unit 33.

  7 and 8, when the third crossover 443 connecting the fourth voltage measurement unit 204 and the third voltage measurement unit 203 is disconnected as the state of the voltage information collection device. Will be described.

  As shown in FIG. 7, the first to third voltage measurement units 201 to 203 are connected to the main communication unit 32, and the fourth to sixth voltage measurement units 204 to 206 are connected to the sub communication unit 33. ing. Thereby, in the voltage information collection unit 30, the communication data from the first to sixth voltage measurement units 201 to 206 is acquired from either the main communication unit 32 or the sub communication unit 33.

  As shown in the list 53 of FIG. 8, at this time, the voltage information collection unit 30 receives normal data from the main communication unit 32 and the first to third voltage measurement units 201 to 203 via the main communication unit 32. On the other hand, the acquired data for the fourth to sixth voltage measuring units 204 to 206 and the sub-communication unit 33 become abnormal data because new data cannot be acquired. In the voltage information collection unit 30, normal data is acquired from the sub communication unit 33 and the fourth to sixth voltage measurement units 204 to 206 via the sub communication unit 33. As for the voltage measuring units 201 to 203 and the main communication unit 32, the acquired data becomes abnormal data because new data cannot be acquired. That is, in the information processing unit 31, normal communication data is collected from the first to sixth voltage measurement units 201 to 206 via the main communication unit 32 or the sub communication unit 33.

  With reference to FIG. 9 to FIG. 11, determination of the state of the voltage information collection device in the present embodiment will be described. Based on the normal / abnormal state of communication data collected via the main communication unit 32 and the sub-communication unit 33, the voltage information collection device identifies the type of abnormality and the position where the abnormality has occurred. To do. Specifically, the voltage information collection device has, as its state, any one of an abnormality caused by disconnection of the communication line, an abnormality caused by disconnection of the measurement unit connector and the external connector (connector disconnection), and an abnormality of the voltage measurement unit 20. Determine whether an abnormality has occurred.

  As shown in the list 55 of FIG. 9, the state of the bus type communication line (communication bus) determined by communication between the main communication unit 32 and the sub communication unit 33 is “normal”, and the main communication unit 32 and The condition of the voltage information collection device is determined to be “normal” on condition that all communication data collected via the sub communication unit 33 is “normal”. 9 and 10, in the following description, communication data that is “abnormal” is explicitly described, and description of communication data that is “normal” is omitted. That is, communication data that is not described as “abnormal” indicates “normal”.

  In addition, the communication bus state is “abnormal” and the communication data from the first to sixth voltage measurement units 201 to 206 collected via the main communication unit 32 and the sub communication unit 33 are collected. On the condition that all of the communication data from the first voltage measurement unit 201 is “abnormal”, the state of the voltage information collection device is determined to be “connector disconnection of the first voltage measurement unit”. That is, based on the determined state, it is also specified that the position where the abnormality has occurred is the “connector of the first voltage measurement unit”. Similarly, the position where the abnormality has occurred is specified from the determined state, but for the sake of convenience of explanation, the explanation is omitted below.

  Further, the communication bus state is “abnormal” and collected via the communication data from the second to sixth voltage measurement units 202 to 206 collected via the main communication unit 32 and the sub communication unit 33. On the condition that both the communication data from the first and second voltage measuring units 201 and 202 are “abnormal”, the state of the apparatus is determined to be “connector disconnected from the second voltage measuring unit”. .

  In addition, the communication bus state is “abnormal” and the communication data from the third to sixth voltage measurement units 203 to 206 collected via the main communication unit 32 and the sub communication unit 33 are collected. If the communication data from the first to third voltage measuring units 201 to 203 are all “abnormal”, the state of the voltage information collecting device is determined as “connector disconnected from the third voltage measuring unit”. Is done.

  In addition, the communication bus state is “abnormal” and the communication data from the fourth to sixth voltage measurement units 204 to 206 collected via the main communication unit 32 and the sub communication unit 33 are collected. If the communication data from the first to fourth voltage measurement units 201 to 204 are all “abnormal”, the state of the voltage information collection device is determined to be “connector disconnection of the fourth voltage measurement unit”. Is done.

  In addition, the communication bus state is “abnormal” and the communication data from the fifth and sixth voltage measurement units 205 and 206 collected via the main communication unit 32 and the sub communication unit 33 are collected. If the communication data from the first to fifth voltage measuring units 201 to 205 are all “abnormal”, the state of the voltage information collecting device is determined as “connector disconnected from the fifth voltage measuring unit”. Is done.

  In addition, the communication bus state is “abnormal” and the communication data from the sixth voltage measurement unit 206 collected via the main communication unit 32 and the first to first collected via the sub-communication unit 33 are collected. On the condition that all of the communication data from the six voltage measuring units 201 to 206 are “abnormal”, the state of the voltage information collecting device is determined as “the connector of the sixth voltage measuring unit is disconnected”.

  In addition, the communication bus state is “abnormal” and the communication data from the first to sixth voltage measurement units 201 to 206 collected via the main communication unit 32 and the sub communication unit 33 are collected. On the condition that any of the communication data from the first to sixth voltage measuring units 201 to 206 is “abnormal”, the state of the voltage information collecting device is determined as “connector disconnection of voltage information collecting unit”. .

  As shown in the list 56 of FIG. 10, the state of the communication bus is “abnormal” and all the communication data from the first to sixth voltage measurement units 201 to 206 collected via the main communication unit 32 are “ On condition that it is “abnormal”, the state of the voltage information collection device is determined as “disconnection of the first collection line 41”. That is, the communication data from the first to sixth voltage measurement units 201 to 206 collected via the sub communication unit 33 are all “normal”.

  The communication bus state is “abnormal” and communication data from the second to sixth voltage measurement units 202 to 206 collected via the main communication unit 32 and the sub communication unit 33 are collected. On condition that all communication data from the first voltage measurement unit 201 is “abnormal”, the state of the voltage information collection device is determined to be “disconnection of the first crossover 441”.

  Collected via the communication data from the third to sixth voltage measurement units 203 to 206 collected via the main communication unit 32 and the sub communication unit 33 when the state of the communication bus is “abnormal” On condition that the communication data from the first and second voltage measuring units 201 and 202 are all “abnormal”, the state of the voltage information collecting device is determined as “disconnection of the second crossover wire 442”.

  The communication bus state is “abnormal” and communication data from the fourth to sixth voltage measurement units 204 to 206 collected via the main communication unit 32 and the sub communication unit 33 are collected. Determining the state of the voltage information collection device as “disconnection of the third connecting wire 443” on condition that all the communication data from the first to third voltage measuring units 201 to 203 is “abnormal”. it can.

  The communication bus state is “abnormal” and communication data from the fifth and sixth voltage measurement units 205 and 206 collected via the main communication unit 32 and the sub communication unit 33 are collected. On the condition that all the communication data from the first to fourth voltage measuring units 201 to 204 are “abnormal”, the state of the voltage information collecting device is determined as “disconnection of the fourth connecting wire 444”.

  The communication bus state is “abnormal”, the communication data from the sixth voltage measurement unit 206 collected via the main communication unit 32, and the first to fifth points collected via the sub communication unit 33. On the condition that all the communication data from the voltage measuring units 201 to 205 are “abnormal”, the state of the voltage information collecting device is determined as “disconnection of the fifth crossover 445”.

  The voltage is determined on the condition that the state of the communication bus is “abnormal” and the communication data from the first to sixth voltage measurement units 201 to 206 collected via the sub communication unit 33 are all “abnormal”. The state of the information collection device is determined as “disconnection of the second collection line 42”. That is, the communication data from the first to sixth voltage measurement units 201 to 206 collected via the main communication unit 32 are all “normal”.

On the condition that only the state of the communication bus is “abnormal”, the state of the voltage information collecting device is determined to be “unstable communication”.
Furthermore, the status of the communication bus is “abnormal” and the “abnormal” communication data collected via the main communication unit 32 and the “abnormal” communication data collected via the sub-communication unit 33 When the combination is different from any of the above combinations, the state of the voltage information collection device is determined as “plurality of connectors disconnected or multiple disconnections”.

  As shown in the list 57 of FIG. 11, the state of the communication bus is “normal”, and the communication data from the first voltage measurement unit 201 collected via the main communication unit 32 and the sub communication unit 33 are On the condition that both are “abnormal”, the state of the voltage information collection device is determined as “failure of the first voltage measurement unit 201” regardless of whether the other communication data is normal or abnormal. Note that “−” in FIG. 11 indicates that the communication data need not be used when determining the failure of the voltage measurement unit 20.

  Also, the state of the communication bus is “normal”, and the respective communication data from the second voltage measurement unit 202 collected via the main communication unit 32 and the sub communication unit 33 are “abnormal”. The condition of the voltage information collection device is determined as “the failure of the second voltage measuring unit 202” regardless of whether the other communication data is normal or abnormal.

  Also, the state of the communication bus is “normal”, and the respective communication data from the third voltage measurement unit 203 collected via the main communication unit 32 and the sub communication unit 33 are “abnormal”. The condition of the voltage information collection device is determined as “the failure of the third voltage measurement unit 203” regardless of whether the other communication data is normal or abnormal.

  Further, the state of the communication bus is “normal”, and the respective communication data from the fourth voltage measurement unit 204 collected via the main communication unit 32 and the sub communication unit 33 are “abnormal”. As a result, the state of the voltage information collection device is determined as “the failure of the fourth voltage measurement unit 204” regardless of whether the other communication data is normal or abnormal.

  Also, the state of the communication bus is “normal”, and the respective communication data from the fifth voltage measurement unit 205 collected via the main communication unit 32 and the sub communication unit 33 are “abnormal”. As a result, the state of the voltage information collection device is determined as “fault of the fifth voltage measurement unit 205” regardless of whether the other communication data is normal or abnormal.

  In addition, the state of the communication bus is “normal”, and the respective communication data from the sixth voltage measurement unit 206 collected via the main communication unit 32 and the sub communication unit 33 are “abnormal”. As a result, the state of the voltage information collection device is determined as “the failure of the sixth voltage measurement unit 206” regardless of whether the other communication data is normal or abnormal.

  In addition, for the “abnormal” communication data collected via the main communication unit 32 and the sub-communication unit 33 when the state of the communication bus is “normal”, the voltage measurement is transmitting the “abnormal” communication data. When there is a difference in the unit 20, the state of the voltage information collection device is determined to be “communication unstable”.

  The conditions of the lists 55 to 57 are held in a storage device as a storage unit of the information processing unit 31, and the information processing unit 31 refers to the lists 55 to 57 to determine the state of the voltage information collection device. be able to. That is, in the storage device of the information processing unit 31, the combination of the battery information collected via the main communication unit 32 and the battery information collected via the sub communication unit 33 is normal and abnormal due to disconnection of the communication line. Information that corresponds to either an abnormality caused by detachment of the measurement unit connector from the external connector (connector disconnection) or an abnormality of the voltage measurement unit 20 is stored in advance.

  With reference to FIGS. 12-14, the operation | movement of the process which determines the state of the voltage information collection device of this embodiment is demonstrated based on a flowchart. The process for determining this state is executed periodically or as necessary.

  As shown in FIG. 12, when the process of determining the state of the voltage information collection device is started, the state of the bus-type communication line is confirmed. That is, in order to confirm the state of the bus-type communication line, the voltage information collection unit 30 transmits communication data from the main communication unit 32 and receives the transmitted communication data by the sub communication unit 33 (FIG. 12). Step S10). Then, the transmitted communication data is compared with the received communication data (step S11 in FIG. 12), and it is determined whether or not the transmitted communication data and the received communication data are the same (step in FIG. 12). S12). When it is determined that the transmitted communication data is the same as the received communication data (YES in step S12 in FIG. 12), the voltage information collection unit 30 determines that the state of the bus-type communication line is normal ( Step S13 in FIG. On the other hand, when it is determined that the transmitted communication data and the received communication data are not the same (NO in step S12 in FIG. 12), the voltage information collection unit 30 determines that the state of the bus-type communication line is abnormal. (Step S14 in FIG. 12). Then, the voltage information collection unit 30 stores the determination result in a storage unit or the like, and ends the confirmation of the state of the bus type communication line.

  Subsequently, as illustrated in FIG. 13, the voltage information collection unit 30 determines the state of communication data collected from each voltage measurement unit 20 via the main communication unit 32. Note that the state of communication data to be collected is determined based on normality / abnormality of battery information such as a voltage value included in the communication data.

  When the determination about the state of the communication data collected via the main communication unit 32 is started, the voltage information collection unit 30 initializes the inspection result regarding the normality / abnormality of the communication data via the main communication unit 32 (FIG. 13). Step S20). That is, by initializing the inspection result, a new inspection result can be stored, and when communication data is not acquired, it can be determined that communication data is not acquired because the initialization state remains. For example, in the storage unit that stores the inspection result for each voltage measurement unit, information indicating “uninspected” is set by initialization, and when communication data is acquired thereafter, the information is acquired instead of “uninspected”. Information indicating that the communication data is “normal” or “abnormal” (abnormality in which communication data is not acquired). Further, the voltage information collection unit 30 initializes the inspection variable n to “1” (step S21 in FIG. 13). Communication data is acquired for each voltage measuring unit 20 connected to the bus-type communication line in the order of the inspection variable n. For example, in the present embodiment, when n is “1”, communication data is acquired for the first voltage measurement unit 201, and when n is “2”, communication data is acquired for the second voltage measurement unit 202. In order, when n is “6”, communication data is acquired for the sixth voltage measurement unit 206.

  That is, the voltage information collection unit 30 outputs a response request signal that instructs the voltage measurement unit 20 corresponding to the inspection variable n to output communication data, and determines whether there is a response to the response request signal. (Step S22 in FIG. 13). The voltage information collection unit 30 monitors the communication data output from each voltage measurement unit 20 for a predetermined period longer than the transmission interval of communication data of each voltage measurement unit 20, and determines whether or not the communication data is acquired. May be determined.

  If it is determined that there is a response to the response request signal (YES in step S22 in FIG. 13), the voltage information collection unit 30 passes through the main communication unit 32 and the nth voltage measurement unit corresponding to the inspection variable n. Is determined to be “normal”, and the determination is stored as an inspection result (step S23 in FIG. 13). At this time, as described above, the voltage information collecting unit 30 may determine that the communication data is simply “normal” if the communication data is acquired, or the acquired communication data is set to a predetermined normal value. If it is within the range, it may be determined as “normal”, and if it is out of the range, it may be determined as “abnormal”.

  On the other hand, if it is determined that there is no response to the response request signal (NO in step S22 in FIG. 13), the voltage information collection unit 30 passes through the main communication unit 32 and the nth voltage measurement unit corresponding to the inspection variable n. Is determined to be “abnormal”, and the determination is stored as an inspection result (step S24 in FIG. 13). The determination of “no response” can be made based on the fact that the communication data responding to the response request signal has not been received even after a predetermined time.

  When the normality / abnormality of the communication data from the nth voltage measurement unit is determined via the main communication unit 32, the voltage information collection unit 30 determines whether the test variable n is connected to the bus type communication line. It is determined whether the number is smaller than the number of measurement units (step S25 in FIG. 13). If the inspection variable n is smaller than the number of voltage measuring units connected to the bus-type communication line (YES in step S25 in FIG. 13), “1” is added to the inspection variable n (FIG. 13). Step S26), the process returns to Step S22, and the next voltage measurement unit 20 is inspected.

  On the other hand, when the inspection variable n is not smaller than the number of voltage measuring units connected to the bus-type communication line (NO in step S25 in FIG. 13), the voltage information collecting unit 30 passes through the main communication unit 32. It is determined that all the voltage measuring units 20 connected to the bus-type communication line have been inspected (step S27 in FIG. 13), and the determination on the state of communication data collected via the main communication unit 32 is ended. .

  Next, as illustrated in FIG. 14, the voltage information collection unit 30 determines the state of communication data collected from each voltage measurement unit 20 via the sub communication unit 33. Note that the determination of the state of communication data collected from each voltage measuring unit 20 via the sub-communication unit 33 is compared with the determination regarding the state of communication data collected via the main communication unit 32 described above. The difference is that the collection of communication data from the voltage measurement unit 20 is not via the main communication unit 32 but via the sub communication unit 33. On the other hand, since the other points are the same, only the outline of the determination of the state of the communication data collected from each voltage measurement unit 20 via the sub communication unit 33 will be described.

  That is, when the determination about the state of the communication data collected via the sub-communication unit 33 is started, the voltage information collection unit 30 initializes the inspection result regarding the normality / abnormality of the communication data via the sub-communication unit 33 ( At the same time as step S30 in FIG. 14, the inspection variable n is initialized to “1” (step S31 in FIG. 14). When the voltage information collection unit 30 receives a response to the response request signal transmitted to the target voltage measurement unit 20 (YES in step S32 in FIG. 14), the communication data of the voltage measurement unit is “normal”. It judges and memorize | stores as a test result (step S33 of FIG. 14). On the other hand, when the voltage information collection unit 30 does not receive a response to the response request signal transmitted to the target voltage measurement unit 20 (NO in step S32 in FIG. 14), the communication data of the voltage measurement unit 20 is “ It is determined that it is “abnormal” and is stored as an inspection result (step S34 in FIG. 14). When the inspection variable n is smaller than the number of voltage measuring units 20 to be inspected (YES in step S35 in FIG. 14), the voltage information collecting unit 30 adds “1” to the inspection variable n ( Returning to step S36) of FIG. 14 and step S32, the next voltage measuring unit 20 is inspected. On the other hand, when the inspection variable n is not smaller than the number of voltage measuring units 20 to be inspected (NO in step S35 in FIG. 14), the voltage information collecting unit 30 uses each voltage measuring unit 20 via the sub communication unit 33. Is completed (step S37 in FIG. 14).

  The presence / absence of a condition corresponding to the combination of the bus type communication line inspection result and the communication data state inspection result obtained in this way is determined based on the conditions in the lists 55 to 57 stored in advance in the storage device. By making a determination based on the comparison, the voltage information collection unit 30 can determine the state of the voltage information collection device based on the lists 55 to 57. Further, in this determination, the voltage information collecting unit 30 supplies the voltage measuring units 201 to 206, the external connectors 431 to 436, the crossover wires 441 to 445, and the collecting lines 41 and 42 in which abnormality has occurred. Can be identified. Therefore, the position where those are arrange | positioned also comes to be specified.

  Therefore, this voltage information collection device can collect battery information of more batteries and determine more details about the abnormality even when an abnormality occurs in communication while suppressing complication of wiring. You can also.

As described above, according to the voltage information collecting apparatus of the present embodiment, the effects listed below can be obtained.
(1) Since the communication line is a bus type, even if an abnormality occurs in the voltage measuring unit 20 connected to the communication line 24 in a bus type, the communication line including the communication line 24 is normally maintained. Even if the communication line is disconnected, the voltage measurement value output from the voltage measurement unit 20 is collected by the voltage information collection unit 30 via the main communication unit 32 or the sub communication unit 33. Furthermore, even if each measurement unit connector 23 and the external connectors 431 to 436 are disconnected, the voltage measurement values output from the voltage measurement units 20 other than the disconnected voltage measurement unit 20 are collected by the voltage information collection unit 30. As a result, the battery information collection device collects battery information of a larger number of batteries even when an abnormality occurs in the collection of the battery information through the communication line while suppressing the complexity of the wiring due to the multiplexing of the wiring. be able to.

  In addition, when an abnormality occurs in these communication lines, each normal voltage measurement value collected via the main communication unit 32 and the sub communication unit 33 is output to each of the voltage measurement units 201 to 206 that outputs it. Differences occur in the combination. Therefore, based on such a difference in combination, it is possible to specify the type of abnormality that has occurred and the position where the abnormality has occurred regarding the abnormality related to communication through the communication line.

  (2) Any one of abnormality due to disconnection of communication line, abnormality due to separation of each measurement unit connector 23 and external connectors 431 to 436, and abnormality of voltage measurement unit 20 is collected by two communication units 32 and 33, respectively. The determination is made based on the normal / abnormality of the measured voltage value, that is, the difference in the combination of the voltage measuring units 20 corresponding to the normal or abnormal voltage measurement value. Thereby, it becomes easy to grasp and manage the abnormality that has occurred in the battery information collecting device.

  (3) About the position where the abnormality has occurred, the voltage measurement unit 20 corresponding to the normal / abnormality of the measurement values of the voltages collected by the two communication units 32 and 33, that is, the measurement value of the normal or abnormal voltage It is specified based on the difference in the combination. Thereby, it becomes easy to grasp and manage the abnormality occurring in the battery information collecting device.

(4) By providing the connection line 24 for each voltage measuring unit 20, the accuracy of specifying the position where the abnormality has occurred can be improved.
(Other embodiments)
In addition, the said embodiment can also be implemented with the following aspects.

  -In above-mentioned embodiment, after determining the state of a communication line, it illustrated about the case where communication data is collected from each voltage measurement part 20, and the state of a voltage information collection device is determined. However, the present invention is not limited to this, and if the determination result of the state of the communication line and the state of the communication data from each voltage measuring unit can be used when determining the state of the battery information collecting device, The determination timing may be any time and is not particularly limited. Thereby, expansion of the design freedom as a battery information collection device comes to be achieved.

  In the above embodiment, the case where an abnormality is detected by comparing the difference in the combination of the voltage measuring units 20 that output normal or abnormal communication data has been illustrated. However, the present invention is not limited to this, and the abnormality may be determined based on the number up to the position before the voltage measurement unit that outputs abnormal communication data. For example, in the case shown in FIG. 1, there is only normal communication data whether via the main communication unit or via the sub-communication unit, so the number up to the position of the voltage measurement unit is 6. 3 and 5, if the main communication unit is used, the number up to the position before the voltage measurement unit that outputs abnormal communication data is three, and if the sub communication unit is used, the same position is reached. The number of is up to two. In the case illustrated in FIG. 7, the number up to the same position is three, and the number up to the same position is three if the sub communication unit is used. As a result, the abnormality that has occurred can be distinguished.

  Alternatively, the determination may be made based on the number of voltage measuring units that output normal communication data. For example, in the case illustrated in FIG. 1, the number is 6 because there is only a voltage measurement unit that outputs normal communication data, whether through the main communication unit or the sub communication unit. In the case shown in FIG. 3, the number of voltage measurement units that output normal communication data is 5 regardless of whether it is via the main communication unit or the sub communication unit. Also, in the case shown in FIG. 5, the number of voltage measuring units that output normal communication data is 2 through the main communication unit, and the voltage measuring unit that outputs normal communication data is through the sub communication unit. The number is three. In the case shown in FIG. 7, there are three normal communication data, and three normal communication data via the sub-communication unit. As a result, the abnormality that has occurred can be distinguished.

  Also, based on the number up to the position before the voltage measurement unit that outputs abnormal communication data and the number of voltage measurement units that output normal communication data, the abnormalities that occur are identified and the occurrence of abnormalities Can also be identified. Thereby, expansion of the design freedom as a battery information collection device comes to be achieved.

  In the above embodiment, the case where both the main communication unit 32 and the sub communication unit 33 can transmit and receive communication data has been illustrated. However, the present invention is not limited to this, and the configuration may be such that only one of the main communication unit and the sub communication unit can perform transmission of communication data. At this time, if the voltage measurement unit periodically and periodically transmits the voltage measurement value, the main communication unit and the sub communication unit can appropriately acquire the voltage measurement value. Also, the normal / abnormal determination of the communication line between the main communication unit and the sub communication unit can be confirmed if any one of the communication units can transmit the communication data for inspection. Thereby, the design freedom of the battery information collecting device can be improved.

  In the above embodiment, the case where the connection line 24 is provided in each voltage measuring unit 20 is illustrated. However, the present invention is not limited to this, and a plurality of voltage measuring units may share one connection line. Also by this, it is possible to identify the abnormality of the communication line and the abnormality position in a form in which the plurality of voltage measuring units are collected. Thereby, the expansion of the application range as a battery information collection device comes to be achieved.

  -In above-mentioned embodiment, it illustrated about the case where the number of the voltage measurement parts to which each connection line 24 is allocated is the same. However, the present invention is not limited to this, and the number of voltage measuring units to which each connection line is assigned may be different. Even if they are different in this way, voltage measurement values can be obtained from each voltage measurement section, and it is possible to determine whether a connector has been disconnected from each connection line, a disconnection, or the like. Thereby, the freedom degree of allocation with a some battery state detection part and a connection line comes to be improved, and the improvement of the design freedom as a battery information collection apparatus will be aimed at.

  In the above-described embodiment, the case where there are six voltage measuring units 20 is illustrated. However, the present invention is not limited thereto, and the number of voltage measuring units may be two or more, and more preferably three or more. As a result, the application range of the battery information collecting apparatus can be expanded.

  In the above-described embodiment, the two corresponding lines of the collection lines 41 and 42 and the crossover lines 441 to 442 correspond to the first to sixth voltage measurement units 201 to 206 corresponding to the external connectors 431 to 436, respectively. The case where the measuring unit connector 23 is detachably connected is illustrated. However, the present invention is not limited to this, and if the corresponding two lines of each connection line and each crossover line constitute a mechanically integrated connection line side connection portion, for example, a plug type or a core wire is fixed. The connecting line side connecting portion may be configured by a configuration other than the connector, such as a mold to be used. In any case, if the two wires are mechanically constrained, their connection to the voltage measuring unit is integrally attached and detached. As a result, the application range of the battery information collecting device can be expanded.

  In the above embodiment, the case where the first and second collection lines 41 and 42 are connected to the collection unit connector 34 of the corresponding voltage information collection unit 30 by the external connector 40 is illustrated. However, the present invention is not limited to this, and the two connection lines may be configured by a configuration other than the connector, as in the case described above, as long as the two connection lines configure a mechanically integrated connection portion. Also in this case, as in the case described above, the connection of the two connection lines to the voltage information collecting unit is integrally attached and detached.

  Further, the first and second collection lines 41 and 42 may not be mechanically integrated, and the first and second terminal lines 35 and 37 may not be mechanically integrated. . Alternatively, the first collection line 41 and the first terminal line 35, and the second collection line 42 and the second terminal line 37 may each be composed of one line.

As a result, the application range of the battery information collecting device can be expanded.
-In above-mentioned embodiment, each battery block B1-B6 illustrated about the case comprised from a battery module. However, the present invention is not limited to this, and the battery block only needs to be composed of one or a plurality of unit cells as long as the voltage between terminals is measured. Examples of such a battery block include an assembled battery including a plurality of battery modules in addition to the battery module. Moreover, as long as the voltage between terminals is measured, the number of cells included in each battery block may be the same or different. Thereby, the expansion of the application range as a battery information collection device comes to be achieved.

  In the above embodiment, the case where the state of the communication data collected from each voltage measurement unit 20 is determined based on the normality / abnormality of the battery information such as the measurement value of the voltage included in the communication data has been illustrated. However, the present invention is not limited to this, and the state of communication data collected from each voltage measurement unit can also be determined based on whether or not communication data based on a communication protocol has been acquired from each voltage measurement unit. Also by this, it is possible to distinguish and determine the malfunction of each voltage measuring unit, the connector disconnection, and the disconnection of the bus type communication line. Thereby, the improvement of the design freedom as a battery information collection device comes to be aimed at.

  -In above-mentioned embodiment, the battery information collection device illustrated about the case where the voltage between terminals of each battery block B1-B6 was collected from the battery group 10. FIG. However, the present invention is not limited to this, and the battery information collection device may collect the current, temperature, and the like of each battery block from the battery group together with the voltage or instead of the voltage. The battery information collecting device can also control the charging / discharging of the battery by collecting the current and temperature of each battery block from the battery group. Further, the voltage is not limited to the voltage between terminals, and may be the voltage of each unit cell in the block, or may be both the voltage between terminals and the voltage of each unit cell. As each battery information collection device, when measuring the current and temperature of each battery block from the battery group, a measurement unit for measuring them from the battery group is provided, and the measurement result by the measurement unit is transmitted to the communication unit. May be output to the communication line via. Thereby, the design freedom of a battery information collection device, the expansion of an application range, etc. come to be aimed at.

  In the above embodiment, the battery is not specified, but as such a battery, various secondary batteries such as a nickel hydride secondary battery, an alkaline secondary battery such as a nickel cadmium battery, a secondary battery such as a lithium ion battery, etc. Is mentioned. The battery may be a primary battery. Thereby, the applicability of the battery information collecting device can be expanded.

  -In above-mentioned embodiment, it illustrated about the case where a battery information collection apparatus is provided in a vehicle (automobile). However, the present invention is not limited to this, and the battery information collection device may be used for a mobile body other than an automobile, a device that is fixedly installed, or the like as long as the battery is used as a power source. The battery may be used as a power source other than the electric motor. As a result, the application range of the battery information collecting apparatus can be expanded.

  DESCRIPTION OF SYMBOLS 10 ... Battery group, 20 ... Voltage measurement part, 21 ... Voltage monitoring part, 22 ... Communication part, 23 ... Measurement part connector, 24 ... Connection line, 25 ... Branch line, 30 ... Voltage information collection part, 31 ... Information processing part 32 ... main communication unit, 33 ... sub-communication unit, 34 ... collecting unit connector, 35 ... first terminal line, 36 ... branch line, 37 ... second terminal line, 38 ... branch line, 40 ... external connector, 41 ... first collecting line, 42 ... second collecting line, 50-53 ... list, 55-57 ... list, 201-206 ... first to sixth voltage measuring units, 431-436 ... external connector, 441 -445 ... Crossover, B1-B6 ... Battery block.

Claims (7)

A plurality of battery blocks that are associated with each of a plurality of battery blocks, detect a battery state of the associated battery block, and output the detected battery state to a communication line connected in a bus type as battery information A battery state detector;
Battery information having a first communication unit and a second communication unit that are bus-connected to the communication line, and output from the plurality of battery state detection units via the first and second communication units. A battery information collecting unit for collecting
The communication line is assigned to one or more of the plurality of battery state detection units and connects the communication lines with a plurality of connection lines having branch lines to which the assigned battery state detection units are connected in a bus type. A connection line for connecting the first communication unit to one of the connection lines, and a connection line for connecting the second communication unit to the other one of the connection lines Has been
A connecting line side connecting portion provided so as to be connectable to each corresponding connecting line at both ends of the connecting line, and a pair of connecting lines connected to the same connecting line are provided so as to be connectable to the connecting line. 1 connection line side connection part is configured to be detachable ,
The battery information collection unit is configured to set a combination of battery information collected via the first communication unit and battery information collected via the second communication unit to “normal” and “disconnection of communication line”. `` Abnormality due to '', `` abnormality due to disconnection between connection line side connection part and connection line side connection part '', and information corresponding to any of `` abnormality of battery state detection part '' are stored in the storage unit in advance, By comparing the combination of the battery information collected via the first communication unit and the battery information collected via the second communication unit with the information stored in the storage unit, the abnormality that has occurred is Battery information collection for determining whether "abnormality due to disconnection of communication line", "abnormality due to disconnection between connection line side connection part and connection line side connection part", or "abnormality of battery state detection part" apparatus.   Each of the plurality of communication lines is assigned to each of the plurality of battery state detection units.
  The battery information collection device according to claim 1. Wherein the storage unit includes a combination of a battery information collected via the first and second communication unit, the "abnormality due to a communication line disconnection", the "contact line side connecting portion and the connection line side connection Information associated with the position where the corresponding abnormality occurs in the “ abnormality due to separation from the battery ” and the “ abnormality of the battery state detection unit ” ,
The battery information acquisition unit, the "abnormality due to a communication line disconnection", any of the "and contact wire-side connecting portion abnormality by disengagement of the connection line side connecting portion" and the "abnormality of the battery state detector" The battery information collection device according to claim 1 or 2 , wherein when it is determined that one abnormality has occurred, a position where the abnormality has occurred is specified.   Positions on the communication path of the plurality of battery state detection units connected by bus to the communication line from the first communication unit to the second communication unit from the first to the nth (n is positive) Integer)
  The battery information collection unit determines "normal" or "abnormal" battery information obtained from each battery state detection unit,
  The battery information obtained from the first to nth battery state detection units in the first communication unit is “normal”, and the nth to first battery states in the second communication unit. Based on the fact that the battery information obtained from each detection unit is “normal”, it is determined to be “normal”,
  The battery information respectively obtained from the mth (m is a positive integer less than n) to nth battery state detection units in the first communication unit is “abnormal”, and m in the second communication unit. Corresponds to the mth battery state detection unit based on the fact that the battery information obtained from the first to the first battery state detection unit is “abnormal” and the other battery information is “normal” It is determined that the "abnormality caused by the disconnection between the connection line side connection part and the connection line side connection part",
  The battery information obtained from each of the battery state detection units from the p-th to the n-th (p is an integer not less than 2 and not more than n) in the first communication unit is “abnormal”, and in the second communication unit, p Based on the fact that the battery information obtained from the first to first battery state detection units is “abnormal” and the other battery information is “normal”, the p−1 and p th Determined as "abnormality due to disconnection of communication line"
  The battery information obtained from the mth battery state detection unit in the first communication unit is “abnormal”, and the battery information obtained from the mth battery state detection unit in the second communication unit is “abnormal”. Based on the above, the m-th battery state detector is determined to be “abnormal battery state detector”.
  The battery information collection device according to claim 3. A plurality of battery blocks that are associated with each of a plurality of battery blocks, detect a battery state of the associated battery block, and output the detected battery state to a communication line connected in a bus type as battery information A battery state detector;
Battery information having a first communication unit and a second communication unit that are bus-connected to the communication line, and output from the plurality of battery state detection units via the first and second communication units. And a battery information collecting unit for collecting
The communication lines, a plurality of communication lines battery state detecting unit allocated assigned the one or a plurality of the plurality of battery state detector has a branch line that will be connected bus type, the contact line between A connection line to be connected, a connection line to connect the first communication unit to one of the connection lines, and a connection line to be connected to the second communication unit to the other one of the connection lines connection,
One connecting line side connecting portion provided to be connectable to each corresponding connecting line at both ends of the connecting line, and a pair of connecting lines connected to the same connecting line are provided to be connectable to the connecting line. A battery information collecting method for detachably connecting a connecting line side connecting part,
In the battery information collection unit, a combination of battery information collected via the first communication unit and battery information collected via the second communication unit is set to “normal”, “communication line Information that corresponds to any of “abnormality due to disconnection”, “abnormality due to disconnection between connection line side connection part and connection line side connection part”, and “abnormality of battery state detection part” is stored in the storage unit in advance,
Battery information output from the plurality of battery state detection units is sent to the battery information collection unit as the first information.
And a combination of battery information collected via the first communication unit and battery information collected via the second communication unit is stored in the storage unit. By comparing with the information that has been made, the abnormality that has occurred is the "abnormality due to disconnection of the communication line", the "abnormality due to disconnection between the connection line side connection part and the connection line side connection part", and the "battery state detection part Battery information collection method for determining whether the error is “abnormality” .   Each of the plurality of communication lines is assigned to each of the plurality of battery state detection units.
  The battery information collection method according to claim 5. Wherein the storage unit includes a combination of a battery information collected via the first and second communication unit, the "abnormality due to a communication line disconnection", the "contact line side connecting portion and the connection line side connection Information associated with the position where the corresponding abnormality occurs in the “ abnormality due to detachment from the part ” and the “ abnormality of the battery state detection unit ” ,
Wherein the battery information acquisition unit, the "abnormality due to a communication line disconnection", the "a contact line side connecting portion abnormality by disengagement of the connection line side connecting portion", and said "abnormal battery state detector" The battery information collection method according to claim 5 or 6, wherein when it is determined that any one abnormality has occurred, a position where the abnormality has occurred is specified.

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