JP6734083B2 - Charge state control device - Google Patents

Description

The present invention relates to a charge state control device.

Conventionally, an uninterruptible power supply device using a storage battery is known. In this uninterruptible power supply, when the supply of power from the main power supply is stopped, the storage battery supplies power to the load instead of the main power supply, and also stores the power supplied from the main power supply in the storage battery. There is something. In such an uninterruptible power supply, the time during which the storage battery can supply power to the load when the supply of power from the main power supply is stopped, that is, the backup time, depends on the amount of charge stored in the storage battery. Decided.

Here, in order to keep the amount of accumulated charge accumulated in the storage battery at a certain amount, the storage battery is repeatedly charged and discharged. The storage battery deteriorates due to repeated charging and discharging.
In addition, the degree of progress of deterioration of the storage battery changes depending on the temperature condition of the usage environment in addition to charging and discharging. For example, when the storage battery is a manganese-based lithium-ion storage battery, the deterioration of the storage battery is likely to proceed if the temperature of the environment in which the storage battery is used is high.

With the above-described deterioration of the storage battery, the capacity (hereinafter, referred to as the battery capacity) in which the storage battery can store the accumulated charge amount decreases. In the conventional technology, various methods have been studied in order to prevent the battery capacity of the storage battery from decreasing due to deterioration.

For example, in Patent Document 1 and Patent Document 2, deterioration occurs by reducing the amount of accumulated charge accumulated in the storage battery until a predetermined time elapses from the start of use of the storage battery, that is, when the storage battery is less deteriorated. A technique for suppressing the progression of is described.

Further, Patent Document 3 describes a technique of suppressing the progress of deterioration of the storage battery by cooling the storage battery with a Peltier element and keeping the temperature of the usage environment low.

JP 2005-278329 A JP 2005-278334 A JP, 2006-196296, A

However, in the conventional techniques described in Patent Document 1 and Patent Document 2, when the amount of accumulated charge is kept low in order to suppress the progress of deterioration of the storage battery, the storage battery can supply power to the load. There was a problem that the time could not be lengthened.

On the other hand, when the amount of accumulated charge accumulated in the storage battery is simply increased, there is a problem that the deterioration of the storage battery is likely to proceed if the temperature of the environment in which the storage battery is used is high.
However, in the conventional technique described in Patent Document 3, it may be difficult to suppress the progress of deterioration of the storage battery due to temperature while increasing the backup time of the storage battery.

One aspect of the present invention is a deterioration determination unit that determines whether or not a battery is deteriorated, a temperature measurement unit that measures at least one of a surface temperature of the battery and an ambient temperature of the battery, and the deterioration determination unit. Based on the determination result of the, and the measurement result measured by the temperature measurement unit, to control the state of charge of the battery, the determination result of the deterioration determination unit, that the battery has not deteriorated in the case shown, the controls the charge state of the first control mode float charge to result the cells based on changing the charging voltage according to the measurement results, the degradation determining unit of the judgment result, the battery is degraded in the case shown that is controls the charge state of the second control mode float charge to result the cells based on the charging by the predetermined charging voltage which does not depend on the measurement result, and a charge control unit, the When the measurement result shows a value lower than a reference temperature of an environment in which the battery is used in the first control mode, the charging control unit sets the state of charge higher than a reference state based on an operating life of the battery. When the measurement result shows a value higher than the reference temperature, the charge state is controlled to be lower than the reference state, and the charge state is set to the operating life of the battery in the second control mode. a charge state control device that controls the lower than the reference state based.

In the charge state control device according to one aspect of the present invention, the charge state is a ratio of a battery capacity that can be stored in the battery and a remaining capacity that is a remaining amount of electric power accumulated in the battery It is a state based on the rate .

The state-of-charge control device of one aspect of the present invention further includes an ambient temperature control unit that controls the ambient temperature, and the ambient temperature control unit controls the ambient temperature according to the state of charge.

In the state-of-charge control device according to one aspect of the present invention, further includes a season determination unit that determines the current season of the place where the battery is installed, and the charge control unit is the season indicated by the determination result of the season determination unit. The charge state is controlled based on

In the state-of-charge control device of one aspect of the present invention, further comprising an area determination unit that determines an area where the battery is installed, wherein the charging control unit is based on the area indicated by the determination result of the area determination unit. The charge state is controlled.

In the state-of-charge control device of one aspect of the present invention, at the current time of the place where the battery is installed, further comprising a time zone determination unit that determines a time zone from a certain time to a time different from the certain time, The charge control unit controls the state of charge based on the time period determined by the time period determination unit.

In the state-of-charge control device of one aspect of the present invention, further includes an elapsed time determination unit that determines an elapsed time from the start of the determination target period to the present in the determination target period in which the battery is used, and the charge control The unit controls the state of charge based on the elapsed time determined by the elapsed time determination unit.

According to the present invention, it is possible to suppress the progress of deterioration of the storage battery while extending the backup time of the storage battery.

It is a schematic diagram which shows an example of a connection of the charge condition control apparatus and storage battery of 1st Embodiment. It is a block diagram which shows an example of a structure of the charge condition control apparatus of this embodiment. 6 is a table showing an example of a relationship between reference control voltage information and reference temperature information of the present embodiment. It is a flowchart which shows an example of operation|movement of the charge condition control apparatus of this embodiment. It is a flow chart which shows an example of operation of control of a charge state of a storage battery when it is judged that a storage battery of this embodiment has not deteriorated. It is a flow chart which shows an example of operation of control of a charge state of a storage battery when it is judged that a storage battery of this embodiment has deteriorated. It is a block diagram which shows an example of a structure of the charge condition control apparatus of 2nd Embodiment. 6 is a table showing an example of a relationship between reference charging rate information and reference temperature information of the present embodiment. It is a flow chart which shows an example of operation of control of a charge state of a storage battery when it is judged that a storage battery of this embodiment has not deteriorated. It is a flow chart which shows an example of operation of control of a charge state of a storage battery when it is judged that a storage battery of this embodiment has deteriorated. It is a block diagram which shows an example of a structure of the charge condition control apparatus of 3rd Embodiment. 9 is a table showing an example of the relationship between the reference control voltage information of Modification 1 and the season information. 9 is a table showing an example of a relationship between reference control voltage information of Modification 2 and area information. 13 is a table showing an example of a relationship between reference control voltage information and time zone information of Modification 3; 9 is a table showing an example of a relationship between reference control voltage information of Modified Example 4 and elapsed time information.

[First Embodiment]
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic diagram showing an example of the connection between the charge state control device 1 of the first embodiment and the storage battery BT.
As shown in FIG. 1, the storage battery BT is connected to the power source AV. A load L is connected to the storage battery BT. The storage battery BT is supplied with power from the power supply AV. The storage battery BT stores the electric power supplied from the power source AV. Further, the storage battery BT supplies the stored power to the load L.
Here, the storage battery BT is an example of a battery. The battery of the present embodiment is, for example, a lithium ion battery in which a carbon material-based material or a titanic acid-based material is used for the negative electrode. In addition, various secondary batteries such as lead batteries and nickel-hydrogen batteries can be used in place of these lithium ion batteries.

When the current flowing through the load L is larger than the current supplied from the power source AV, the storage battery BT is discharged. When the current flowing through the load L is smaller than the current supplied from the power source AV, the storage battery BT is charged. When the current flowing through the load L and the current supplied from the power source AV are equal, the storage battery BT is float-charged. That is, the operation of the storage battery BT differs depending on the current flowing through the load L and the current supplied from the power source AV.

As shown in FIG. 1, the charge state control device 1 is connected to an ammeter AM, a voltmeter VM, a thermometer TM, and a charging unit 500.
The voltmeter VM measures the voltage value of the voltage applied by the power source AV to the storage battery BT. The voltmeter VM supplies the charge state control device 1 with voltage information V indicating the voltage value of the voltage applied to the storage battery BT by the measured power source AV. The ammeter AM measures the current value of the current flowing from the power source AV to the storage battery BT. The ammeter AM supplies current information I indicating the current value of the current flowing from the measured power source AV to the storage battery BT to the charge state control device 1.

The charge state control device 1 acquires the voltage information V measured by the voltmeter VM. The charge state control device 1 also acquires the current information I measured by the ammeter AM. The charge state control device 1 calculates the internal resistance IR of the storage battery BT based on the voltage information V and the current information I. In this example, the charge state control device 1 determines whether or not the storage battery BT is deteriorated based on the calculated internal resistance IR of the storage battery BT.

In the above description, the state of charge control device 1 determines the presence or absence of deterioration of the storage battery BT based on the internal resistance IR of the storage battery BT, but the present invention is not limited to this. The charge state control device 1 may determine whether or not the storage battery BT is deteriorated based on the open circuit voltage of the storage battery BT. That is, the charge state control device 1 may use any method as long as the presence or absence of deterioration of the storage battery BT can be determined.

The charging unit 500 controls the state of charge of the storage battery BT by a known method according to the presence or absence of deterioration of the storage battery BT determined by the state of charge control device 1. Here, the charge state is a state of energy density of the storage battery BT. The charge state includes the discharge voltage of the storage battery BT and the charge voltage of the storage battery BT. Specifically, the charging unit 500 sets the discharge voltage, which is the voltage at which the storage battery BT discharges, or the charge voltage, which is the voltage at which the storage battery BT is charged, depending on whether or not the storage battery BT is deteriorated, which is determined by the charge state control device 1. Control by known methods.

Moreover, the thermometer TM measures the temperature of the storage battery BT. The thermometer TM includes, for example, a thermistor. In this example, the thermometer TM is installed in contact with the surface of the storage battery BT and measures the temperature of the surface of the storage battery BT. The charge state control device 1 acquires the temperature T measured by the thermometer TM. The charge state control device 1 controls the charge state of the storage battery BT based on the acquired temperature T of the storage battery BT.

In addition, although the thermometer TM was installed in contact with the surface of the storage battery BT and the temperature of the surface of the storage battery BT was measured in the above description, the present invention is not limited to this. The thermometer TM may be installed inside the storage battery BT and measure the temperature inside the storage battery BT. Further, the thermometer TM may be installed near the storage battery BT and measure the temperature around the storage battery BT. That is, the thermometer TM may detect any temperature as long as it can measure the temperature of the environment in which the storage battery BT is used.

Hereinafter, the details of the charge state control device 1 will be described with reference to FIG. FIG. 2 is a configuration diagram showing an example of the configuration of the charge state control device 1 of the present embodiment.
As described above, the charge state control device 1 is connected to the ammeter AM, the voltmeter VM, the thermometer TM, and the charging unit 500. In addition, as shown in FIG. 2, the charging state control device 1 includes a control unit 100 and a storage unit 150.

The storage unit 150 stores in advance reference deterioration information SDG, reference temperature information ST, reference control voltage information SCV, and deterioration voltage information DCV.
The reference deterioration information SDG is information indicating the resistance value of the internal resistance IR, which is a reference for the degree of deterioration of the storage battery BT.
When it is determined that the storage battery BT is deteriorated, the internal resistance IR of the storage battery BT is larger than the value indicated by the reference deterioration information SDG. When it is determined that the storage battery BT has not deteriorated, the internal resistance IR of the storage battery BT is smaller than the value indicated by the reference deterioration information SDG.
That is, the reference deterioration information SDG is information indicating the threshold value of the internal resistance IR.

Further, the reference temperature information ST is information indicating the reference temperature of the environment in which the storage battery BT is used.
When the temperature of the environment in which the storage battery BT is used is high, the temperature T indicating the surface temperature of the storage battery BT measured by the thermometer TM is higher than the value indicated by the reference temperature information ST. Further, when the temperature of the environment in which the storage battery BT is used is low, the temperature T indicating the surface temperature of the storage battery BT measured by the thermometer TM is smaller than the value indicated by the reference temperature information ST.
That is, the reference temperature information ST is information indicating the threshold value of the temperature of the environment in which the storage battery BT is used. In this example, the value indicated by the reference temperature information ST, which is the reference for the environment in which the storage battery BT is used, is 30°C.

Further, the reference control voltage information SCV is information indicating the control voltage value CV of the state of charge of the storage battery BT. The control voltage value CV is a value indicating the voltage value of the state of charge of the storage battery BT. Specifically, the control voltage value CV is a value indicating the voltage value of the discharge voltage and the charge voltage of the storage battery BT. When the storage battery BT is in the charged state, the discharge voltage and the charge voltage are controlled to the control voltage value CV based on the control voltage value CV.
In this example, as shown in FIG. 2, the reference control voltage information SCV includes a control voltage value CV1 and a control voltage value CV2.
The charge state of the storage battery BT is controlled based on the control voltage value CV1 or the control voltage value CV2 based on the presence or absence of deterioration of the storage battery BT and the temperature of the environment in which the storage battery BT is used.
Specifically, the charge state of the storage battery BT is controlled when it is determined that the storage battery BT is not deteriorated and the temperature of the environment in which the storage battery BT is used is lower than the reference temperature information ST. It is controlled based on the voltage value CV1. Further, the state of charge of the storage battery BT is the control voltage value CV2 when it is determined that the storage battery BT is not deteriorated and the temperature of the environment in which the storage battery BT is used is higher than the reference temperature information ST. Controlled based on. Moreover, the charge state of the storage battery BT is controlled based on the deterioration voltage information DCV when it is determined that the storage battery BT is deteriorated. The deterioration voltage information DCV will be described later.
Hereinafter, the relationship between the reference control voltage information SCV and the reference temperature information ST will be described with reference to FIG.

FIG. 3 is a table showing an example of the relationship between the reference control voltage information SCV and the reference temperature information ST of this embodiment.
As shown in FIG. 3, in this example, when the temperature T is lower than 30° C., that is, when the temperature T is lower than the reference temperature information ST, the state of charge of the storage battery BT is controlled based on the control voltage value CV1. It When the temperature T is 30° C. or higher, that is, when the temperature T is the reference temperature information ST or higher, the state of charge of the storage battery BT is controlled based on the control voltage value CV2.

In this example, the rated voltage of the storage battery BT is 2.7V. Further, as shown in FIG. 3, in this example, the value indicated by the control voltage value CV1 is 2.7V. The value indicated by the control voltage value CV2 is 2.5V.
That is, 2.7V which is the control voltage value CV1 is the rated voltage of the storage battery BT.
The control voltage value CV2 is a value for controlling the charge state and the discharge voltage of the storage battery BT to be low in order to prevent deterioration due to overcharge of the storage battery BT. That is, the control voltage value CV2 is a value set based on the operating life of the storage battery BT. In this example, the control voltage value CV2 is 2.5V, which indicates 90% of 2.7V which is the rated voltage of the storage battery BT.

Returning to FIG. 2, the deterioration voltage information DCV is information used to control the state of charge of the storage battery BT when it is determined that the storage battery BT is deteriorated. In this example, the deterioration voltage information DCV indicates 2.5V.

The control unit 100 includes a CPU (Central Processing Unit), and includes a deterioration determination unit 110, a temperature measurement unit 120, and a voltage control unit 130 as its functional units.

Hereinafter, with reference to FIG. 2 and FIG. 4, an operation of each unit included in the charge state control device 1 and an operation of the charge state control device 1 will be described.
FIG. 4 is a flowchart showing an example of the operation of the charge state control device 1 of this embodiment.

As illustrated in FIG. 2, the deterioration determination unit 110 acquires the voltage information V from the voltmeter VM (step S110 in FIG. 4). This voltage information V is a voltage value measured by the voltmeter VM. That is, the voltage information V indicates the voltage value applied to the storage battery BT.
Further, the deterioration determination unit 110 acquires the current information I from the ammeter AM (step S120 in FIG. 4). The current information I is a current value measured by the ammeter AM. That is, the current information I indicates the value of the current flowing from the power source AV to the storage battery BT. The deterioration determination unit 110 calculates the internal resistance IR of the storage battery BT based on the acquired voltage information V and current information I (step S130 in FIG. 4). The deterioration determination unit 110 reads the reference deterioration information SDG from the storage unit 150 (step S140 in FIG. 4). The deterioration determination unit 110 compares the calculated internal resistance IR with the reference deterioration information SDG to determine whether the storage battery BT is deteriorated (step S150 in FIG. 4). Deterioration determination unit 110 supplies determination result J, which is the result of determining whether or not storage battery BT is deteriorated, to voltage control unit 130.

When the determination result J acquired from the deterioration determination unit 110 indicates that the storage battery BT is not deteriorated (step S150; NO in FIG. 4), the voltage control unit 130 controls the charge state of the storage battery BT in the control mode M1 ( FIG. 4 step S160). When the determination result J acquired from the deterioration determination unit 110 indicates that the storage battery BT is deteriorated (step S150; YES in FIG. 4), the voltage control unit 130 controls the charge state of the storage battery BT by the control mode M2. (FIG. 4, step S170).
Hereinafter, the details of the control mode M1 will be described with reference to FIGS. 2 and 5.

FIG. 5 is a flow chart showing an example of the operation of controlling the state of charge of the storage battery BT when it is determined that the storage battery BT of the present embodiment has not deteriorated. The control mode M1 is a control method that controls the charge state of the storage battery BT based on the temperature T into a state where the backup time is prioritized or a state based on the operating life of the storage battery BT. The temperature T used to select the control of the charge state in the control mode M1 is the temperature T shown in the measurement result MR measured by the temperature measuring unit 120. That is, the control mode M1 is a control method that controls the state of charge of the storage battery BT based on the temperature T of the surface of the storage battery BT.
As shown in FIG. 2, the temperature measuring unit 120 measures the temperature T indicating the value of the surface temperature of the storage battery BT measured by the thermometer TM (step S310 in FIG. 5). The temperature measurement unit 120 supplies the measurement result MR indicating the temperature T to the voltage control unit 130 (step S320 in FIG. 5). The voltage control unit 130 reads the reference temperature information ST from the storage unit 150 (step S330 in FIG. 5). The voltage control unit 130 supplies the control voltage value CV included in the reference control voltage information SCV to the charging unit 500 according to the temperature T indicated in the measurement result MR and the reference temperature information ST.

Specifically, as shown in FIG. 5, the voltage control unit 130 determines whether or not the temperature T indicated in the measurement result MR acquired from the temperature measuring unit 120 is smaller than the value indicated by the reference temperature information ST (step). S340). When the temperature T indicated by the measurement result MR is lower than the reference temperature indicated by the reference temperature information ST (step S340; YES), the voltage control unit 130 supplies the control voltage value CV1 included in the reference control voltage information SCV to the charging unit 500. Supply (step S350). The charging unit 500 controls the charging state of the storage battery BT to be the control voltage value CV1 based on the control voltage value CV1 acquired from the voltage control unit 130 (step S360).

When the temperature T indicated in the measurement result MR is higher than the value indicated by the reference temperature information ST (step S340; NO), the voltage control unit 130 sets the control voltage value CV2 included in the reference control voltage information SCV to the charging unit 500. (Step S370). The charging unit 500 controls the charging state of the storage battery BT to be the control voltage value CV2 based on the control voltage value CV2 acquired from the voltage control unit 130 (step S380).
In the following description, the control voltage value CV1 and the control voltage value CV2 are collectively referred to as the control voltage value CV, unless otherwise specified.

Here, between the control voltage value CV1 and the control voltage value CV2, the control voltage value CV1 has a higher voltage value. That is, regarding the charge state of the storage battery BT, the charge state controlled based on the control voltage value CV1 and the charge state controlled based on the control voltage value CV2 are higher in the former state and in the latter state. It has a lower charge state.
Further, as described above, the value of the control voltage value CV2 is a value set based on the operating life of the storage battery BT. That is, when the charge state of the storage battery BT is controlled based on the control voltage value CV2, the charge state of the storage battery BT is a state based on the operating life of the storage battery BT.
In the following description, the charge state of the storage battery BT controlled based on the control voltage value CV2 will be referred to as the reference state.
That is, the voltage control unit 130 controls the charging state of the storage battery BT to be higher than the reference state by controlling the charging state of the storage battery BT based on the control voltage value CV1. Further, the voltage control unit 130 controls the charge state of the storage battery BT to the reference state by controlling the charge state of the storage battery BT based on the control voltage value CV2.

Thereby, the charge state control device 1 sets the charge state of the storage battery BT higher than the reference state when it is determined that the storage battery BT is not deteriorated and the temperature of the environment in which the storage battery BT is used is low. Control the state.
In addition, the charge state control device 1 controls the charge state of the storage battery BT to the reference state when it is determined that the storage battery BT is not deteriorated and the temperature of the environment in which the storage battery BT is used is high. ..

In the above description, the charge state control device 1 determines the charge state of the storage battery BT as the reference state when it is determined that the storage battery BT is not deteriorated and the temperature of the environment in which the storage battery BT is used is high. Although the case where the control is performed is described above, the present invention is not limited to this. The state of charge control device 1 makes the state of the storage battery BT lower than the reference state when it is determined that the storage battery BT is not deteriorated and the temperature of the environment in which the storage battery BT is used is high. You may control.
That is, when the storage battery BT is determined not to have deteriorated and the temperature of the environment in which the storage battery BT is used is high, the state-of-charge control device 1 sets the state of charge of the storage battery BT to a state lower than the reference state. It may be controlled to.

Next, the control mode M2 will be described with reference to FIG. FIG. 6 is a flow chart showing an example of the operation of controlling the state of charge of the storage battery BT when it is determined that the storage battery BT of the present embodiment is deteriorated. The control mode M2 is a control method that controls the state of charge of the storage battery BT based on the operating life of the storage battery BT.
As shown in FIG. 6, the voltage control unit 130 reads the deteriorated voltage information DCV from the storage unit 150 (step S410). The voltage control unit 130 supplies the deterioration voltage information DCV to the charging unit 500 (step S420). As described above, in this example, the deterioration voltage information DCV is 2.5V. The charging unit 500 controls the charging state of the storage battery BT to be the deterioration voltage information DCV (2.5V) based on the deterioration voltage information DCV acquired from the voltage control unit 130 (step S430).

As described above, the voltmeter VM, the ammeter AM, the thermometer TM, and the charging unit 500 are connected to the charge state control device 1. The charge state control device 1 also includes a control unit 100 and a storage unit 150.
The control unit 100 includes a deterioration determination unit 110, a temperature measurement unit 120, and a voltage control unit 130 as its functional units.
The deterioration determination unit 110 determines whether or not the storage battery BT is deteriorated. The temperature measuring unit 120 measures the temperature T of the surface of the storage battery BT measured by the thermometer TM.

The voltage control unit 130 supplies the control voltage value CV to the charging unit 500 based on the determination result J of the deterioration determination unit 110 and the measurement result MR indicating the surface temperature T of the storage battery BT measured by the temperature measurement unit 120. To do. The charging unit 500 stores at least one of the charging voltage for charging the storage battery BT and the discharging voltage indicating the voltage for discharging the storage battery BT based on the control voltage value CV acquired from the voltage control unit 130. Control as the charging state of BT.
Here, as described above, the state of charge of the storage battery BT is a state of energy density of the storage battery BT.
That is, according to the charge state control device 1 of the present embodiment, the state of energy density, which is the charge state of the storage battery BT, can be controlled by the charge voltage or the discharge voltage of the storage battery BT.

When the determination result J of the deterioration determination unit 110 indicates that the storage battery BT is not deteriorated, the voltage control unit 130 controls the charge state of the storage battery BT based on the control mode M1. The control mode M1 is a control method that controls the charge state of the storage battery BT based on the temperature T to a state where the backup time is prioritized or a state based on the operating life of the storage battery BT. The temperature T used to select the control of the control mode M1 is the temperature T shown in the measurement result MR measured by the temperature measuring unit 120. That is, the control mode M1 is a control method that controls the state of charge of the storage battery BT based on the temperature T indicated by the measurement result MR measured by the temperature measuring unit 120.

Specifically, when the determination result J of the deterioration determination unit 110 indicates that the storage battery BT is not deteriorated, the voltage control unit 130 causes the temperature T indicated in the measurement result MR to be lower than the reference temperature information ST. In the case of, the charge state of the storage battery BT is controlled based on the control voltage value CV1. That is, when the determination result J of the deterioration determining unit 110 indicates that the storage battery BT is not deteriorated, the voltage control unit 130 determines that the temperature T shown in the measurement result MR is the reference temperature information of the environment in which the storage battery BT is used. When the value is lower than ST, the charge state of the storage battery BT is controlled to be higher than the reference state based on the operating life of the storage battery BT.

Further, when the determination result J of the deterioration determining unit 110 indicates that the storage battery BT is not deteriorated and the temperature T indicated in the measurement result MR indicates a value higher than the reference temperature information ST, the voltage control unit 130: The charge state of the storage battery BT is controlled based on the control voltage value CV2. That is, when the determination result J of the deterioration determining unit 110 indicates that the storage battery BT is not deteriorated, and the temperature T indicated in the measurement result MR indicates a value higher than the reference temperature information ST, the voltage control unit 130: The charge state of the storage battery BT is controlled to be lower than the reference state based on the operating life of the storage battery BT.

Moreover, when the determination result J of the deterioration determination unit 110 indicates that the storage battery BT is deteriorated, the voltage control unit 130 controls the charge state of the storage battery BT based on the control mode M2. The control mode M2 is a control method of the state of charge of the storage battery BT when it is determined that the storage battery BT is deteriorated.
Specifically, voltage control unit 130 controls the state of charge of storage battery BT based on deterioration voltage information DCV. Accordingly, when the determination result J of the deterioration determining unit 110 indicates that the storage battery BT is deteriorated, the voltage control unit 130 sets the state of charge of the storage battery BT to a state lower than the reference state based on the operating life of the storage battery BT. Control.

[Second Embodiment]
Hereinafter, a second embodiment of the present invention will be described with reference to the drawings. FIG. 7: is a block diagram which shows an example of a structure of the charge condition control apparatus 2 of 2nd Embodiment. The same components and operations as those in the first embodiment described above are designated by the same reference numerals, and the description thereof will be omitted.
As shown in FIG. 7, an ammeter AM, a voltmeter VM, a thermometer TM, and a charging section 500-1 are connected to the charge state control device 2.

The charging unit 500-1 controls the state of charge of the storage battery BT by a known method according to the presence/absence of deterioration of the storage battery BT determined by the state of charge control device 2. The state of charge includes the charging rate. Here, the charging rate is the ratio of the remaining amount of electric power stored in the storage battery BT to the battery capacity, which is the capacity that the storage battery BT can store. The charging unit 500-1 controls the charging rate of the storage battery BT by a known method depending on whether the storage battery BT is deteriorated as determined by the charge state control device 2.

In addition, the charge state control device 2 of the present embodiment includes a control unit 200 and a storage unit 250.
The storage unit 250 stores reference deterioration information SDG, reference temperature information ST, reference charging rate information SCR, and deterioration charging rate information DCR.

The reference charging rate information SCR is information indicating the control charging rate CR of the charging state of the storage battery BT. The control charge rate CR is a rate indicating the charge rate of the charge state of the storage battery BT. Specifically, the charging rate, which is the state of charge of the storage battery BT, is controlled to be the control charging rate CR based on the control charging rate CR.
In this example, as shown in FIG. 7, the reference charging rate information SCR includes a control charging rate CR1 and a control charging rate CR2.
The state of charge of the storage battery BT is based on the control charging rate CR1 when it is determined that the storage battery BT has not deteriorated and the temperature of the environment in which the storage battery BT is used is lower than the reference temperature information ST. Controlled. Further, the charge state of the storage battery BT is the control charge rate CR2 when it is determined that the storage battery BT is not deteriorated and the temperature of the environment in which the storage battery BT is used is higher than the reference temperature information ST. Controlled based on. Moreover, the charge state of the storage battery BT is controlled based on the deterioration charge rate information DCR when it is determined that the storage battery BT is deteriorated. The deteriorated charging rate information DCR will be described later.
Hereinafter, the relationship between the reference charging rate information SCR and the reference temperature information ST will be described with reference to FIG.

FIG. 8 is a table showing an example of the relationship between the reference charging rate information SCR and the reference temperature information ST of this embodiment.
As shown in FIG. 8, in this example, when the temperature T is lower than 30° C., that is, when the temperature T is lower than the reference temperature information ST, the state of charge of the storage battery BT is controlled based on the control charging rate CR1. It When the temperature T is 30° C. or higher, that is, when the temperature T is the reference temperature information ST or higher, the state of charge of the storage battery BT is controlled based on the control charge rate CR2.

As shown in FIG. 8, in this example, the controlled charging rate CR1 is 100%. The control charge rate CR2 is 90%.
The control charge rate CR2 is a rate for controlling the charge rate of the storage battery BT to be low in order to prevent deterioration due to overcharge of the storage battery BT. That is, the ratio of the control charge rate CR2 is a ratio set based on the operating life of the storage battery BT.

Returning to FIG. 7, the deteriorated charging rate information DCR is information used for controlling the state of charge of the storage battery BT when it is determined that the storage battery BT is deteriorated. In this example, the deteriorated charging rate information DCR indicates 90%.

The control unit 200 includes a CPU, and includes a deterioration determination unit 110, a temperature measurement unit 120, and a charging rate control unit 210 as its functional units.

In the present embodiment, when the determination result J acquired from the deterioration determining unit 110 indicates that the storage battery BT has not deteriorated, the charging rate control unit 210 controls the charging state of the storage battery BT in the control mode M1. .. Further, in the present embodiment, when the determination result J acquired from the deterioration determination unit 110 indicates that the storage battery BT is deteriorated, the charging rate control unit 210 controls the charging state of the storage battery BT in the control mode M2.
Hereinafter, the details of the control mode M1 will be described with reference to FIGS. 7 and 9.

FIG. 9 is a flowchart showing an example of the operation of controlling the state of charge of the storage battery BT when it is determined that the storage battery BT of the present embodiment has not deteriorated.
As shown in FIG. 7, the temperature measuring unit 120 measures the temperature T indicating the value of the temperature of the surface of the storage battery BT measured by the thermometer TM (step S510 in FIG. 9). The temperature measuring unit 120 supplies the measurement result MR indicating the temperature T to the charging rate control unit 210 (step S520 in FIG. 9). The charging rate control unit 210 reads the reference temperature information ST from the storage unit 250 (step S530 in FIG. 9). The charging rate control unit 210 supplies the control charging rate CR to the charging unit 500-1 based on the temperature T indicated in the measurement result MR, the reference temperature information ST, and the reference charging rate information SCR.

Specifically, as shown in FIG. 9, the charging rate control unit 210 determines whether or not the temperature T indicated in the measurement result MR acquired from the temperature measuring unit 120 is smaller than the value indicated by the reference temperature information ST. (Step S540). When the temperature T indicated in the measurement result MR is smaller than the value indicated by the reference temperature information ST (step S540; YES), the charging rate control unit 210 sets the control charging rate CR1 included in the reference charging rate information SCR to the charging unit 500-. 1 (step S550). The charging unit 500-1 controls the charging state of the storage battery BT to be the controlled charging rate CR1 based on the controlled charging rate CR1 acquired from the charging rate control unit 210 (step S560).

When the temperature T indicated in the measurement result MR is higher than the value indicated by the reference temperature information ST (step S540; NO), the charging rate control unit 210 sets the control charging rate CR2 included in the reference charging rate information SCR to the charging unit. It is supplied to 500-1 (step S570). The charging unit 500-1 controls the charging state of the storage battery BT to be the controlled charging rate CR2 based on the controlled charging rate CR2 acquired from the charging rate control unit 210 (step S580).
In the following description, the control charging rate CR1 and the control charging rate CR2 will be collectively referred to as the control charging rate CR unless otherwise distinguished.

Here, in the control charging rate CR1 and the control charging rate CR2, the control charging rate CR1 shows a higher ratio. That is, regarding the charging state of the storage battery BT, the former charging state is higher than the charging state controlled based on the control charging rate CR1 and the charging state controlled based on the control charging rate CR2. It has a lower charge state.
Further, as described above, the value of the control charge rate CR2 is a value set based on the operating life of the storage battery BT. That is, when the charge state of the storage battery BT is controlled based on the control charge rate CR2, the charge state of the storage battery BT is a state based on the operating life of the storage battery BT.
In the following description, the charge state of the storage battery BT controlled based on the control charge rate CR2 will be referred to as a reference state.
That is, the charge rate control unit 210 controls the charge state of the storage battery BT to be higher than the reference state by controlling the charge state of the storage battery BT based on the control charge rate CR1. In addition, the charging rate control unit 210 controls the charging state of the storage battery BT to the reference state by controlling the charging state of the storage battery BT based on the control charging rate CR2.

Thereby, the charge state control device 2 controls the charge state of the storage battery BT to be higher than the reference state when the storage battery BT is not deteriorated and the temperature of the environment in which the storage battery BT is used is low.
In addition, the charge state control device 2 controls the charge state of the storage battery BT to the reference state when it is determined that the storage battery BT is not deteriorated and the temperature of the environment in which the storage battery BT is used is high. ..

In the above description, the state of charge control device 2 determines the state of charge of the storage battery BT as the reference state when it is determined that the storage battery BT is not deteriorated and the temperature of the environment in which the storage battery BT is used is high. Although the case where the control is performed is described above, the present invention is not limited to this. The state of charge control device 2 makes the state of the storage battery BT lower than the reference state when it is determined that the storage battery BT is not deteriorated and the temperature of the environment in which the storage battery BT is used is high. You may control.
That is, when the state of charge of the storage battery BT is determined to be not deteriorated and the temperature of the environment in which the storage battery BT is used is high, the state-of-charge control device 2 sets the state of charge of the storage battery BT lower than the reference state. It may be controlled to.

Next, the control mode M2 will be described with reference to FIG. FIG. 10 is a flow chart showing an example of the operation of controlling the state of charge of the storage battery BT when it is determined that the storage battery BT of the present embodiment is deteriorated. The control mode M2 is a control method for controlling the charging state of the storage battery BT to a state based on the operating life of the storage battery BT.
As shown in FIG. 10, the charging rate control unit 210 reads the deteriorated charging rate information DCR from the storage unit 250 (step S710). The charging rate control unit 210 supplies the deteriorated charging rate information DCR to the charging unit 500-1 (step S720). As described above, in this example, the deterioration charge rate information DCR is 90%. The charging unit 500-1 controls the charging state of the storage battery BT to be the deterioration charging rate information DCR (90%) based on the deterioration charging rate information DCR acquired from the charging rate control unit 210 (step S730).

As described above, the charging state control device 2 is connected to the voltmeter VM, the ammeter AM, the thermometer TM, and the charging unit 500-1. The charge state control device 2 also includes a control unit 200 and a storage unit 250.
The control unit 200 includes a deterioration determination unit 110, a temperature measurement unit 120, and a charging rate control unit 210 as its functional units.
The deterioration determination unit 110 determines whether or not the storage battery BT is deteriorated. The temperature measuring unit 120 measures the temperature T of the surface of the storage battery BT measured by the thermometer TM.

The charging rate control unit 210 controls the charging unit 500-1 based on the determination result J of the deterioration determining unit 110 and the measurement result MR indicating the temperature T of the surface of the storage battery BT measured by the temperature measuring unit 120. Supply CR. The charging unit 500-1 is a ratio of the battery capacity that the storage battery BT can store based on the control charging rate CR acquired from the charging rate control unit 210 to the remaining amount of the electric power stored in the storage battery BT. The charging rate is controlled as the charging state of the storage battery BT.
Here, as described above, the state of charge of the storage battery BT is a state of energy density of the storage battery BT.
That is, according to the state of charge control device 2 of the present embodiment, the state of the energy density, which is the state of charge of the storage battery BT, is the battery capacity at which the storage battery BT can store electricity, and the remaining amount of electric power stored in the storage battery BT. It can be controlled by the charging rate, which is the ratio of

When the determination result J of the deterioration determination unit 110 indicates that the storage battery BT has not deteriorated, the charging rate control unit 210 controls the charging state of the storage battery BT based on the control mode M1. The control mode M1 is a control method that controls the charge state of the storage battery BT based on the temperature T into a state where the backup time is prioritized or a state based on the operating life of the storage battery BT. The temperature T used to select the control of the control mode M1 is the temperature T shown in the measurement result MR measured by the temperature measuring unit 120. That is, the control mode M1 is a control method that controls the state of charge of the storage battery BT based on the temperature T indicated by the measurement result MR measured by the temperature measuring unit 120.

Specifically, when the determination result J of the deterioration determining unit 110 indicates that the storage battery BT is not deteriorated, the charging rate control unit 210 determines that the temperature T indicated in the measurement result MR is lower than the reference temperature information ST. When the value is indicated, the charge state of the storage battery BT is controlled based on the control charge rate CR1. That is, when the determination result J of the deterioration determination unit 110 indicates that the storage battery BT is not deteriorated, the charging rate control unit 210 determines that the temperature T shown in the measurement result MR is the reference temperature of the environment in which the storage battery BT is used. When the value is lower than the information ST, the state of charge of the storage battery BT is controlled to be higher than the reference state based on the operating life of the storage battery BT.

In addition, when the determination result J of the deterioration determination unit 110 indicates that the storage battery BT is not deteriorated, the charging rate control unit 210 indicates that the temperature T indicated in the measurement result MR indicates a value higher than the reference temperature information ST. , The charging state of the storage battery BT is controlled based on the control charging rate CR2. That is, when the determination result J of the deterioration determination unit 110 indicates that the storage battery BT has not deteriorated, the charging rate control unit 210 indicates that the temperature T indicated in the measurement result MR indicates a value higher than the reference temperature information ST. , The charging state of the storage battery BT is controlled to be lower than the reference state based on the operating life of the storage battery BT.

Further, when the determination result J of the deterioration determining unit 110 indicates that the storage battery BT is deteriorated, the charging rate control unit 210 controls the charging state of the storage battery BT based on the control mode M2. The control mode M2 is a control method that controls the state of charge of the storage battery BT based on the operating life of the storage battery BT.
Specifically, the charging rate control unit 210 controls the charging state of the storage battery BT based on the deteriorated charging rate information DCR. Accordingly, when the determination result J of the deterioration determining unit 110 indicates that the storage battery BT is deteriorated, the charging rate control unit 210 sets the state of charge of the storage battery BT to a state lower than the reference state based on the operating life of the storage battery BT. To control.

[Summary]
As described above, the charge state control device 1 of the first embodiment controls the energy density state of the storage battery BT by the voltage. As described above, the charge state of the storage battery BT is the energy density state of the storage battery BT. That is, in the charge state control device 1 of the first embodiment, the voltage control unit 130 can control the state of the energy density of the storage battery BT by controlling the discharge voltage or the charge voltage of the storage battery BT. Specifically, the voltage control unit 130 can control the energy density of the storage battery BT to a high state by controlling the discharge voltage or the charging voltage of the storage battery BT to a value higher than that in the reference state. In addition, the voltage control unit 130 can control the energy density of the storage battery BT to a low state by controlling the discharge voltage or the charging voltage of the storage battery BT to a value lower than that in the reference state.

In addition, the charge state control device 2 of the second embodiment controls the charge state of the storage battery BT according to the charging rate of the storage battery BT. That is, the charge state control device 2 of the second embodiment can control the state of the energy density of the storage battery BT by the charge rate control unit 210 controlling the charge rate of the storage battery BT. Specifically, the charging rate control unit 210 can control the energy density of the storage battery BT to a high state by controlling the charging rate of the storage battery BT to be higher than that in the reference state. In addition, the charging rate control unit 210 can control the energy density of the storage battery BT to a low state by controlling the charging rate of the storage battery BT to a rate lower than that in the reference state.

That is, the discharge voltage or charging voltage of the storage battery BT controlled by the voltage control unit 130 and the charging rate of the storage battery BT controlled by the charging rate control unit 210 are examples of a method of controlling the energy density state of the storage battery BT.
In the following description, the voltage control unit 130 and the charging rate control unit 210 will be collectively referred to as a charging control unit. Further, in the following description, the charge state control device 1 and the charge state control device 2 are collectively referred to as a charge state control device.

The charge state control device includes a deterioration determination unit 110, a temperature measurement unit 120, and a charge control unit. The deterioration determination unit 110 determines whether or not the storage battery BT is deteriorated. The temperature measuring unit 120 measures the temperature T of the surface of the storage battery BT. The charge control unit controls the state of charge of the storage battery BT based on the determination result J of the deterioration determining unit 110 and the measurement result MR measured by the temperature measuring unit 120.

In the conventional technology, since the state of charge of the storage battery BT is kept low in order to suppress the progress of deterioration of the storage battery BT, the backup time during which the storage battery BT can supply power to the load L cannot be lengthened. There was a problem. On the other hand, when the state of charge of the storage battery BT is simply increased and the temperature T of the environment in which the storage battery BT is used is higher than the reference temperature information ST, the deterioration of the storage battery BT progresses. There was a problem to do.

When the determination result J of the deterioration determination unit 110 indicates that the storage battery BT is not deteriorated, the charge control unit controls the charge state of the storage battery BT according to the determination result J of the temperature measurement unit 120.
In addition, when the determination result J of the deterioration determination unit 110 indicates that the storage battery BT is deteriorated, the charge control unit controls the charging state of the storage battery BT to the reference state based on the operating life of the storage battery BT.

Specifically, when the determination result J of the deterioration determination unit 110 indicates that the storage battery BT is not deteriorated, the charge control unit determines that the temperature T indicated in the measurement result MR measured by the temperature measurement unit 120 is the storage battery BT. Indicates a value lower than the reference temperature information ST of the environment in which it is used, the charging state is controlled to be higher than the reference state of the storage battery BT.
When the determination result J of the deterioration determination unit 110 indicates that the storage battery BT is not deteriorated, the charge control unit uses the storage battery BT as the temperature T indicated in the measurement result MR measured by the temperature measurement unit 120. When the value is higher than the reference temperature information ST of the environment, the charging state is controlled to be lower than the reference state.

That is, according to the charge state control device, when it is determined that the storage battery BT is not deteriorated and the temperature T is lower than the reference temperature information ST, the charge state of the storage battery BT is higher than the reference state. You can control the state. Further, according to the charge state control device 1 of the first embodiment and the charge state control device 2 of the second embodiment, it is when it is determined that the storage battery BT is not deteriorated and the temperature T is the reference temperature information. When it is higher than ST, the charging state of the storage battery BT can be controlled to be lower than the reference state.
Accordingly, when it is determined that the storage battery BT has not deteriorated, the state-of-charge control device performs control to lengthen the backup time of the storage battery BT, and according to the temperature of the environment in which the storage battery BT is used, It is possible to control the deterioration of the storage battery BT.

When the determination result J of the deterioration determining unit 110 indicates that the storage battery BT is deteriorated, the charging control unit controls the charging state to be lower than the reference state based on the operating life of the storage battery BT.

That is, according to the charge state control device 1 of the first embodiment and the charge state control device 2 of the second embodiment, when it is determined that the storage battery BT is deteriorated, control for suppressing the deterioration of the storage battery BT is performed. It can be performed.

That is, according to the state-of-charge control device, based on the determination result J by the deterioration determining unit 110 of the presence or absence of deterioration of the storage battery BT and the measurement result MR of the temperature of the environment in which the storage battery BT is used by the temperature measuring unit 120, The charge control unit can control the control state of the storage battery BT.
That is, according to the charge state control device, the progress of deterioration of the storage battery is suppressed while lengthening the backup time of the storage battery based on the presence or absence of deterioration of the storage battery BT and the temperature of the environment in which the storage battery BT is used. You can

[Third Embodiment]
Hereinafter, a third embodiment of the present invention will be described with reference to the drawings. FIG. 11: is a block diagram which shows an example of a structure of the charge condition control apparatus 3 of 3rd Embodiment. In addition, about the structure and operation similar to 1st Embodiment and 2nd Embodiment mentioned above, the same code|symbol is attached|subjected and the description is abbreviate|omitted.
As shown in FIG. 11, the charge state control device 3 is connected to an ammeter AM, a voltmeter VM, a thermometer TM, a charging unit 500, and a temperature adjusting unit 600.
The temperature adjusting unit 600 adjusts the temperature of the environment in which the storage battery BT is used by a known method based on the reference temperature information ST supplied from the charge state control device 1.
In addition, the charge state control device 3 of the present embodiment includes a control unit 300 and a storage unit 150.

The control unit 300 includes a CPU, and includes a deterioration determination unit 110, a temperature measurement unit 120, a voltage control unit 130, and an ambient temperature control unit 310 as its functional units.

In addition, although the case where the control part 300 is equipped with the temperature measurement part 120 was demonstrated above, it is not restricted to this. The control unit 300 may include a charging rate control unit 210 instead of the temperature measurement unit 120. Further, in this case, the charge state control device 3 may include a storage unit 250 instead of the storage unit 150.

As shown in FIG. 11, the ambient temperature control unit 310 acquires the determination result J from the deterioration determination unit 110. When the determination result J indicates that the storage battery BT has not deteriorated, the ambient temperature control unit 310 reads the reference temperature information ST from the storage unit 150. The ambient temperature control unit 310 supplies the read reference temperature information ST to the temperature adjustment unit 600.
The temperature adjusting unit 600 uses the storage battery BT so that the temperature of the environment in which the storage battery BT is used is lower than the temperature indicated by the reference temperature information ST, based on the reference temperature information ST acquired from the ambient temperature control unit 310. Adjust the environment temperature.

As described above, the voltmeter VM, the ammeter AM, the thermometer TM, the charging unit 500, and the temperature adjusting unit 600 are connected to the charge state control device 3 of the present embodiment. The charge state control device 3 also includes a control unit 300 and a storage unit 150.
The control unit 300 includes a deterioration determination unit 110, a temperature measurement unit 120, a voltage control unit 130, and an ambient temperature control unit 310 as its functional units. Ambient temperature control unit 310 controls the ambient temperature of storage battery BT.

Specifically, when the determination result J of the deterioration determining unit 110 indicates that the storage battery BT is not deteriorated, the ambient temperature control unit 310 determines the ambient temperature of the storage battery BT based on the reference temperature information ST. Adjust so that it is lower than the temperature indicated by ST.
That is, when the state of the storage battery BT is higher than the reference state, as indicated by the determination result J of the deterioration determination unit 110, the ambient temperature control unit 310 sets the ambient temperature of the reference temperature information ST to be higher than the temperature indicated by the reference temperature information ST. Adjust to lower.
That is, when the state of the storage battery BT is higher than the reference state, the charge state control device 3 of the present embodiment does not lower the ambient temperature of the storage battery BT by the ambient temperature control unit 310 lowering the ambient temperature of the storage battery BT. As compared with the case, the control for increasing the backup time can be performed for a long time.

[Modification 1: Control of state of charge according to season]
Hereinafter, modified examples according to the first embodiment, the second embodiment, and the third embodiment of the present invention will be described with reference to the drawings. FIG. 12 is a table showing an example of the relationship between the reference control voltage information SCV and the seasonal information SS of the first modification. Here, for convenience of description, a case where the charge state control device is the charge state control device 1 will be described as an example.
The charge state control device 1 of the modification 1 further includes, as a functional unit of the control unit 100, a season determination unit that determines the season of the place where the storage battery BT whose charge state control device 1 controls the charge state is installed. The season determination unit determines the season of the place where the storage battery BT is installed by a known method. The season determination unit also supplies the voltage control unit 130 as a determination result of determining the season information SS indicating the season of the place where the storage battery BT is installed. The voltage control unit 130 controls the state of charge of the storage battery BT based on the determination result J of the deterioration determination unit 110, the measurement result MR of the thermometer TM, and the season information SS which is the determination result of the season determination unit.

Specifically, as shown in FIG. 12, when the season information SS indicates spring, autumn, and winter, the voltage control unit 130 sets the state of charge of the storage battery BT higher than the reference state, that is, based on the control voltage value CV1. Control. Further, as shown in FIG. 12, when the seasonal information SS indicates summer, the voltage control unit 130 controls the state of charge of the storage battery BT to be lower than the reference state, that is, based on the control voltage value CV2.

As described above, the charge state control device 1 of the modified example 1 includes the deterioration determination unit 110, the temperature measurement unit 120, the voltage control unit 130, and the season determination unit as the functional units of the control unit 100. The season determination unit determines the current season of the place where the storage battery BT whose charge state control device 1 controls the charge state is installed. The voltage control unit 130 controls the state of charge of the storage battery BT based on the season information SS indicating the determination result determined by the season determination unit, the determination result J, and the measurement result MR.

Here, the period in which the temperature T shown in the measurement result MR is higher than the reference temperature information ST may be related to the season of the place where the storage battery BT is installed. For example, when the season information SS, which is the determination result of the season determination unit, indicates summer, the frequency at which the temperature T shown in the measurement result MR measured by the temperature measurement unit 120 becomes higher than the reference temperature information ST may increase. .. Specifically, when the season where the storage battery BT is installed is summer, the frequency at which the temperature T indicated in the measurement result MR becomes higher than the reference temperature information ST increases as compared with spring, autumn, and winter. ..
That is, the charge state control device 1 controls the charge state of the storage battery BT based on the season information SS which is the determination result of the season determination unit. As a result, the charge state control device 1 can reduce the processing load as compared with the case where the charge state of the storage battery BT is sequentially controlled based on the measurement result MR measured by the temperature measurement unit 120.

[Modification 2: Control of state of charge according to area]
Hereinafter, modified examples according to the first embodiment, the second embodiment, and the third embodiment of the present invention will be described with reference to the drawings. FIG. 13 is a table showing an example of the relationship between the reference control voltage information SCV of the second modification and the area information AR. Here, for convenience of description, a case where the charge state control device is the charge state control device 1 will be described as an example.
The charge state control device 1 of the second modification further includes, as a functional unit of the control unit 100, a region determination unit that determines the region where the storage battery BT whose charge state control device 1 controls the charge state is installed. The area determination unit determines the area where the storage battery BT is installed by a known method. The area determination unit also supplies the voltage control unit 130 as a determination result of determining the area information AR indicating the area where the storage battery BT is installed. The voltage control unit 130 controls the state of charge of the storage battery BT based on the determination result J of the deterioration determination unit 110, the measurement result MR of the thermometer TM, and the area information AR which is the determination result of the area determination unit.

Specifically, as shown in FIG. 13, when the regional information AR indicates Hokkaido, Tohoku, Kanto and Chubu, the voltage control unit 130 sets the state of charge of the storage battery BT to a state higher than the reference state, that is, the control voltage value CV1. Control based on. Further, as shown in FIG. 13, when the area information AR indicates Shikoku and Kyushu Okinawa, the voltage control unit 130 controls the state of charge of the storage battery BT to be lower than the reference state, that is, based on the control voltage value CV2.

As described above, the charge state control device 1 of the modified example 2 includes the deterioration determination unit 110, the temperature measurement unit 120, the voltage control unit 130, and the area determination unit as the functional units of the control unit 100. The area determination unit determines the area of the place where the storage battery BT whose charge state control device 1 controls the charge state is installed. The voltage control unit 130 controls the state of charge of the storage battery BT based on the region information AR indicating the determination result determined by the region determination unit, the determination result J, and the measurement result MR.

Here, the region where the temperature T indicated by the measurement result MR is higher than the reference temperature information ST may be related to the region where the storage battery BT is installed. For example, when the area information AR, which is the determination result of the area determination unit, indicates Kyushu Okinawa, the temperature T indicated in the measurement result MR measured by the temperature measurement unit 120 may be more frequent than the reference temperature information ST. Specifically, when the area where the storage battery BT is installed is Kyushu Okinawa, the frequency at which the temperature T indicated in the measurement result MR becomes higher than the reference temperature information ST increases as compared with other areas.
That is, the state-of-charge control device 1 controls the state of charge of the storage battery BT based on the area information AR that is the determination result of the area determination unit, and thus the storage battery BT of the storage battery BT based on the measurement result MR measured by the temperature measurement unit 120. The processing load can be reduced as compared with the case where the charge state is sequentially controlled.

[Modification 3: Control of charge state according to time zone]
Hereinafter, modified examples according to the first embodiment, the second embodiment, and the third embodiment of the present invention will be described with reference to the drawings. FIG. 14 is a table showing an example of the relationship between the reference control voltage information SCV and the time zone information PT of Modification 3. Here, for convenience of description, a case where the charge state control device is the charge state control device 1 will be described as an example.
The charge state control device 1 of the modified example 3 is a functional unit of the control unit 100, and a time period for determining a time period based on the time of a place where the storage battery BT whose charge state control device 1 controls the charge state is installed. A determination unit is further provided. Here, the time zone is a width of time from a certain time to a time different from the certain time. Specifically, the time zone is a width of time indicated by a daytime zone, a nighttime zone, and the like. The time zone determination unit determines the time zone of the place where the storage battery BT is installed by a known method. In this example, the time zone determination unit determines whether the time zone of the place where the storage battery BT is installed is the time zone from 7:00 to 18:00 or the time zone from 18:00 to 7:00. Further, the time zone determination unit supplies the voltage control unit 130 as the determination result of the time zone information PT indicating the time zone of the place where the storage battery BT is installed. The voltage control unit 130 controls the state of charge of the storage battery BT based on the determination result J of the deterioration determination unit 110, the measurement result MR of the thermometer TM, and the time zone information PT that is the determination result of the time zone determination unit. To do.

Specifically, as shown in FIG. 14, when the time zone information PT indicates from 7:00 to 18:00, the voltage control unit 130 sets the state of charge of the storage battery BT higher than the reference state, that is, the control voltage value CV1. Control based on. Further, as shown in FIG. 14, when the time zone information PT indicates from 18:00 to 7:00, the voltage control unit 130 sets the charging state of the storage battery BT to a state lower than the reference state, that is, based on the control voltage value CV2. Control.

As described above, the charge state control device 1 of the modified example 3 includes the deterioration determination unit 110, the temperature measurement unit 120, the voltage control unit 130, and the time zone determination unit as the functional units of the control unit 100. The time zone determination unit determines the time zone of the location where the storage battery BT whose charge state control device 1 controls the charge state is installed. The voltage control unit 130 controls the state of charge of the storage battery BT based on the time zone information PT indicating the determination result determined by the time zone determination unit, the determination result J, and the measurement result MR.

Here, the power consumed by the load L connected to the storage battery BT may be related to the time zone of the place where the storage battery BT is installed. For example, when the factory operating during the day has a load L, when the time zone information PT, which is the determination result of the time zone determination unit, is from 7:00 to 18:00 and from 18:00 to 7:00, The electric power consumed by the load L may become larger by 18:00. Accordingly, when the time zone information PT indicates 7 o'clock to 18 o'clock, the voltage control unit 130 controls the charging state of the storage battery BT to be higher than the reference state. Thereby, the charge state control device 1 can control the charge state of the storage battery BT to lengthen the backup time of the load L.
That is, the state-of-charge control device 1 can control to extend the backup time of the load L by controlling the state of charge of the storage battery BT based on the time zone information PT which is the determination result of the time zone determination unit. ..

[Modification 4: Control of charge state according to elapsed time from start of use of storage battery BT]
Hereinafter, modified examples according to the first embodiment, the second embodiment, and the third embodiment of the present invention will be described with reference to the drawings. FIG. 15 is a table showing an example of the relationship between the reference control voltage information SCV and the elapsed time information ET of Modification 4. Here, for convenience of description, a case where the charge state control device is the charge state control device 1 will be described as an example.
The charge state control device 1 of the modified example 5 is a functional unit of the control unit 100 from the start of use of the storage battery BT whose charge state control device 1 controls the charge state, and the start of the determination of the elapsed use time to the present. Further, an elapsed time determination unit that determines the time that has elapsed from the start of the determination target period in the determination target period that is the period. The elapsed time determination unit determines the time from the start of the determination target period to the present by a known method. The time zone determination unit supplies the voltage control unit 130 as a determination result of determining the elapsed time information ET indicating the elapsed time from the start of the determination target period to the present. The voltage control unit 130 controls the state of charge of the storage battery BT based on the determination result J of the deterioration determination unit 110, the measurement result MR of the thermometer TM, and the elapsed time information ET which is the determination result of the elapsed time determination unit. To do.

Specifically, as shown in FIG. 15, when the elapsed time information ET indicates less than 30,000 hours, the voltage control unit 130 sets the state of charge of the storage battery BT to a state higher than the reference state (based on the control voltage value CV1). Control. Further, as shown in FIG. 15, when the elapsed time information ET indicates 30,000 hours or more, the voltage control unit 130 controls the charging state of the storage battery BT to be lower than the reference state (based on the control voltage value CV2).

As described above, the charge state control device 1 of the modified example 4 includes the deterioration determination unit 110, the temperature measurement unit 120, the voltage control unit 130, and the elapsed time determination unit as the functional units of the control unit 100. The elapsed time determination unit determines the determination target period of the determination target period that is the period from the start of the use of the storage battery BT whose charge state control device 1 controls the charge state and the start of the determination of the use elapsed time to the present. The time elapsed from the start of is determined. The voltage control unit 130 controls the state of charge of the storage battery BT based on the elapsed time information ET indicating the determination result determined by the elapsed time determination unit, the determination result J, and the measurement result MR.

Here, the presence or absence of deterioration of the storage battery BT may be related to the time elapsed since the storage battery BT was first used. For example, when the elapsed time information ET which is the determination result of the elapsed time determination unit is less than 30,000 hours and when it is 30,000 hours or more, the storage battery BT may be deteriorated when 30,000 hours or more. Along with this, when the elapsed time information ET indicates 30,000 hours or more, the voltage control unit 130 performs control to make the state of charge of the storage battery BT lower than the reference state. Thereby, the charge state control device 1 can control the charge state of the storage battery BT in consideration of the deterioration of the storage battery BT.
That is, the state-of-charge control device 1 controls the state of charge of the storage battery BT based on the elapsed time information ET which is the determination result of the elapsed time determination unit, so that the control can be performed in consideration of the deterioration of the storage battery BT. ..

Each unit included in the charge state control device 1, the charge state control device 2, and the charge state control device 3 in each of the above-described embodiments may be realized by dedicated hardware, or may include a memory and a micro. It may be realized by a processor.

Each unit included in the charge state control device 1, the charge state control device 2, and the charge state control device 3 includes a memory and a CPU (central processing unit), and the charge state control device 1, the charge state control device 2, and the charge state The function for realizing the function of each unit included in the control device 3 may be realized by loading the program into the memory and executing the program.

Further, a program for realizing the functions of the respective units included in the charge state control device 1, the charge state control device 2, and the charge state control device 3 is recorded in a computer-readable recording medium, and the program recorded in this recording medium is recorded. May be read by a computer system and executed to perform the processing. The “computer system” mentioned here includes an OS and hardware such as peripheral devices.

Further, the “computer system” also includes a homepage providing environment (or display environment) if a WWW system is used.
Further, the "computer-readable recording medium" refers to a portable medium such as a flexible disk, a magneto-optical disk, a ROM, a CD-ROM, or a storage device such as a hard disk built in a computer system. Further, the "computer-readable recording medium" means to hold a program dynamically for a short time like a communication line when transmitting the program through a network such as the Internet or a communication line such as a telephone line. In this case, a volatile memory inside a computer system that serves as a server or a client in that case holds a program for a certain period of time. Further, the program may be for realizing a part of the above-described functions, and may be a program for realizing the above-mentioned functions in combination with a program already recorded in the computer system.

Although the embodiment of the present invention has been described in detail above with reference to the drawings, the specific configuration is not limited to this embodiment, and appropriate modifications may be made without departing from the spirit of the present invention. it can. The configurations described in the above embodiments may be combined.

1, 2, 3... Charge state control device, 100, 200, 300... Control unit, 110... Deterioration determination unit, 120... Temperature measurement unit, 130... Voltage control unit, 150, 250... Storage unit, 210... Charging rate control Part, 310... Ambient temperature control part, 500, 500-1... Charging part, 600... Temperature control part, AM... Ammeter, VM... Voltmeter, TM... Thermometer, AV... Power supply, BT... Storage battery, I... Current Information, V... Voltage information, T... Temperature, IR... Internal resistance, J... Judgment result, MR... Measurement result, L... Load, M1, M2... Control mode, CR, CR1, CR2... Control charge rate, CV, CV1 , CV2... Control voltage value, SCR... Reference charging rate information, SCV... Reference control voltage information, SDG... Reference deterioration information, ST... Reference temperature information, DCR... Degradation charging rate information, DCV... Degradation voltage information, SS... Seasonal information , AR...Regional information, PT...Time zone information, ET...Elapsed time information

Claims (7)

A deterioration determination unit that determines whether or not the battery has deteriorated,
A temperature measuring unit for measuring at least one of the surface temperature of the battery and the ambient temperature of the battery;
Based on the determination result of the deterioration determining unit and the measurement result measured by the temperature measuring unit, the charge state of the battery is controlled, and the determination result of the deterioration determining unit indicates that the battery has deteriorated. in the case shown that not, the measurement results depending on the control state of charge of the first control mode float charge to result the cells based on changing the charging voltage, the deterioration determination of the determination result, the in the case shown that the battery has deteriorated controls the charge state of the second float charge to result the cell based on the control mode for charging the predetermined charging voltage which does not depend on the measurement result, a charge control unit Equipped with
The charging control unit,
In the first control mode, when the measurement result shows a value lower than the reference temperature of the environment in which the battery is used, the charging state is controlled to be higher than the reference state based on the operating life of the battery, When the measurement result shows a value higher than the reference temperature, the charge state is controlled to be lower than the reference state, and the charge state is lower than the reference state based on the operating life of the battery in the second control mode. Control the state
A state of charge control device characterized by the above. What is the state of charge?
The charging according to claim 1, wherein the state is based on a charging rate that is a ratio of a battery capacity that can be stored in the battery and a remaining capacity that is a remaining amount of electric power accumulated in the battery. State control device. Further comprising an ambient temperature control unit for controlling the ambient temperature,
The ambient temperature control unit,
The charge state control device according to claim 1 or 2 , wherein the ambient temperature is controlled according to the charge state. Further comprising a season determination unit that determines the current season of the place where the battery is installed,
The charging control unit,
The charge state control device according to any one of claims 1 to 3 , wherein the charge state is controlled based on the season indicated by the determination result of the season determination unit. Further comprising an area determination unit that determines the area where the battery is installed,
The charging control unit,
The charge state control device according to any one of claims 1 to 4 , wherein the charge state is controlled based on the region indicated by the determination result of the region determination unit. Further comprising a time zone determination unit that determines a time zone from a certain time to a time different from the certain time at the current time of the place where the battery is installed,
The charging control unit,
The charge state control device according to any one of claims 1 to 5 , wherein the charge state is controlled based on the time period determined by the time period determination unit. Of the determination target period in which the battery is used, further comprising an elapsed time determination unit that determines the elapsed time from the start of the determination target period to the present,
The charging control unit,
The charge state control device according to any one of claims 1 to 6 , wherein the charge state is controlled based on the elapsed time determined by the elapsed time determination unit.

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