TW202137622A - Charging/discharging system and charging/discharging device - Google Patents

Abstract

A charging/discharging device 200 can have a storage battery pack 100 attached thereto/detached therefrom, and, when the storage battery pack 100 is attached thereto, charging is performed or discharging, to a first level, is performed. The storage battery pack 100 determines the deterioration degree of the storage battery pack 100, transmits the deterioration degree to an information terminal device 300, and receives, from the information terminal device 300, a discard instruction based on the deterioration degree. The charging/discharging device 200 discharges the storage battery pack 100, having received the discard instruction, to a second level lower than the first level.

Description

Charging and discharging system and charging and discharging device

This disclosure relates to a charging and discharging technology, and more particularly to a charging and discharging system and a charging and discharging device for charging and discharging a battery.

The battery packs to be recycled are generally recycled by manufacturers, etc. At this time, it is required to infer the location of the battery pack to be recycled. Therefore, the charger in the removable battery pack has a communication function for communicating with the server device via the base station, and the charger sends the identification information of the battery pack to the server device. Based on the identification information of the battery pack, the server device specifies whether the battery pack is a recycling target, and based on the identification information of the base station that relays the identification information of the battery pack, estimates the location of the battery pack (for example, refer to Patent Document 1). [Prior Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. 2019-191833

[The problem to be solved by the invention]

When the battery pack contains lithium ion secondary batteries, in order to use the battery pack safely, various states of the lithium ion secondary battery are managed in the battery pack. It is expected that such various states can also be used to safely discard battery packs.

This disclosure was made in view of such a situation, and its purpose is to provide a technology for safely discarding battery packs using various states managed in the battery pack. [Technical means to solve the problem]

In order to solve the above-mentioned problems, a certain aspect of the charging and discharging system of the present disclosure includes: a battery pack; and a charging and discharging device, which can disassemble the battery pack and perform charging or discharging to the first level when the battery pack is installed. After the battery pack determines the degree of deterioration of the battery pack, it sends the degree of deterioration to the information terminal device and receives a discard instruction based on the degree of degradation from the information terminal device. Level 2 of the level.

Another aspect of the present disclosure is also a charging and discharging system. The charging and discharging system is equipped with: a battery pack; and a charging and discharging device, which can detach the battery pack and perform charging or discharging to the first level when the battery pack is installed. The battery pack notifies the disposal recommendation based on the determined degree of deterioration of the battery pack, and accepts the disposal instruction corresponding to the disposal recommendation. The charging and discharging device discharges the battery pack that accepts the disposal instruction to the second level lower than the first level.

Yet another aspect of the present disclosure is a charging and discharging device, which is a removable battery pack and is equipped with: a charging and discharging part that performs charging or discharging to the first level when the battery pack is installed; and accepts Section, which accepts a discard instruction from the battery pack when the battery pack determines the degree of degradation of the battery pack and transmits the degradation degree to the information terminal device and receives a discard instruction based on the degradation degree from the information terminal device. The charging and discharging unit discharges the battery pack to the second level lower than the first level when the receiving unit accepts the discard instruction.

Yet another aspect of the present disclosure is also a charging and discharging device, which is a detachable battery pack and is equipped with: a charging and discharging part that performs charging or discharging to the first level when the battery pack is installed; and The acceptance unit accepts the discarding instruction from the battery pack when the battery pack notifies the discarding recommendation based on the degree of deterioration of the determined battery pack and accepts the discarding instruction corresponding to the discarding recommendation. The charging and discharging unit discharges the battery pack to the second level lower than the first level when the receiving unit accepts the discard instruction.

In addition, any combination of the above constituent elements and the conversion between the methods, devices, systems, recording media, computer programs, etc. of the present disclosure are also valid as aspects of the present disclosure. [Effects of Invention]

According to the present disclosure, various states managed in the battery pack can be used to safely discard the battery pack.

(Example 1) Before describing the embodiments of the present disclosure in detail, the outline of the embodiments will be described. This embodiment relates to a charging and discharging system that can perform charging and discharging of a battery pack by connecting the battery pack to a charging and discharging device. The battery pack includes, for example, lithium ion secondary batteries. In order to use the battery pack safely, various statuses of the lithium ion secondary battery are obtained from the battery pack. An example of the various states is the degree of deterioration of the battery. In the event of serious deterioration of the battery, the battery pack must be discarded. At this time, it is desirable to safely discard the battery pack.

In the charging and discharging system of this embodiment, an information terminal device such as a smart phone is connected to a battery pack by a short-range wireless communication system, and an application program operating in the information terminal device displays information on the battery pack and controls the battery pack. When the battery pack is discarded, when the application program informs the charge-discharge device of a discarding instruction via the battery pack, the charge-discharge device discharges the battery pack until the remaining power is close to zero. Here, the present embodiment will be described in the order of (1) configuration, (2) initial setting, (3) deterioration degree determination, (4) disposal, and (5) delivery to the supplier.

(1) Composition FIG. 1 shows the structure of a charging and discharging system 1000. The charging and discharging system 1000 includes a battery pack 100, a charging and discharging device 200, an information terminal device 300, a network 400, and a server device 500. The battery pack 100 includes a secondary battery such as a lithium ion secondary battery, and the degree of deterioration is specified based on various states of the lithium ion secondary battery. The battery pack 100 can be detached from the charging and discharging device 200. When the battery pack 100 is installed in the charging and discharging device 200, the charging and discharging device 200 performs charging and discharging of the battery pack 100, and performs the connection between the battery pack 100 and the charging and discharging device 200. Communication. The battery pack 100 performs communication corresponding to the short-range wireless communication system. The short-range wireless communication system is, for example, Bluetooth (registered trademark) and BLE (Bluetooth Low Energy).

The information terminal device 300 is, for example, a smart phone, a tablet terminal, or a PC (Personal Computer). The information terminal device 300 can perform communication corresponding to the same short-range wireless communication system as the battery pack 100. The information terminal device 300 is connected to the network 400 and can communicate with the server device 500 via the network 400. For the network 400, for example, a wireless communication system such as 5G (Generation), 4G, etc. is used. In addition, the Internet can also be combined with the network 400. Generally speaking, the communicable range of a wireless communication system is wider than that of a short-range wireless communication system. The information terminal device 300 executes an application program (hereinafter referred to as "application software") for controlling the battery pack 100. The processing by the application software will be described later.

The server device 500 is used by a manufacturer or operator who manufactures the battery pack 100. The server device 500 is connected to the network 400, and performs processing for providing various information to application software, for example.

FIG. 2 shows the structure of the charging and discharging system 1000. FIG. 2 shows the structure of the battery pack 100, the charging and discharging device 200, and the information terminal device 300 in FIG. The battery pack 100 includes a battery 110, a control unit 120, a storage unit 130, a first communication unit 140, a notification unit 150, and an operation unit 180, and the control unit 120 includes a determination unit 160 and a second communication unit 170. The charging and discharging device 200 includes a charging and discharging circuit 210, a control unit 220, a communication unit 230, a power plug 250, a power supply unit 260, a cooling fan 270, and a discharger 280. The control unit 220 includes an accepting unit 240. The information terminal device 300 includes a first communication unit 310, a control unit 320, a storage unit 330, a display unit 340, an operation unit 350, and a second communication unit 360.

The storage battery 110 of the storage battery pack 100 is, for example, a secondary battery such as a lithium ion secondary battery. The storage battery 110 is connected to the control unit 120 and controlled by the control unit 120. The control unit 120 controls the overall operation of the battery pack 100. An example of the operation is the determination of the degree of deterioration of the storage battery 110 performed by the determination unit 160. The storage unit 130 stores a table used when the determination unit 160 determines the degree of deterioration of the storage battery 110. The first communication unit 140 communicates with the information terminal device 300 by performing communication corresponding to the short-range wireless communication system. The notification unit 150 is an interface for notifying the user of various information. The notification unit 150 includes, for example, a plurality of LEDs (Light Emitting Diode), and changes the lighting patterns of the plurality of LEDs according to the content of the information. The second communication unit 170 can perform serial communication such as RS-485, RS-422, RS-232C, etc., and communicates with the charging and discharging device 200 when the battery pack 100 is connected to the charging and discharging device 200, for example. The operation unit 180 is an interface for the user to operate, such as a button.

The power plug 250 of the charging and discharging device 200 is detachably connected to an external AC power source. When the power plug 250 is connected to an AC power source, the AC power source can supply AC power to the charging and discharging device 200. When the power plug 250 is connected to an AC power source, if the battery pack 100 is connected to the connection part (not shown) of the charging and discharging device 200, the charging and discharging circuit 210 of the charging and discharging device 200 will receive the AC power from the power plug 250 The storage battery 110 is charged by conversion into DC power.

The power supply unit 260 is detachably connected to an external electronic device. If the electronic device is connected to the power supply unit 260, the charging and discharging device 200 can supply AC power to the electronic device. In the case of the electronic equipment power supply unit 260, if the battery pack 100 is connected to the connection part (not shown) of the charging and discharging device 200, the charging and discharging circuit 210 of the charging and discharging device 200 converts the DC power from the battery 110 It is AC power, and AC power is output from the power supply unit 260. At this time, the charge and discharge circuit 210 discharges the battery 110 to the first level. The first level is predetermined. The cooling fan 270 blows air to the charging and discharging circuit 210 by rotating. The temperature rise of the charging and discharging circuit 210 is suppressed by blowing air. The cooling fan 270 is not limited to cooling, so it may be a fan. The control unit 220 is connected to the charging and discharging circuit 210 and controls the overall operation of the charging and discharging device 200. The communication unit 230 can be connected to the second communication unit 170 to communicate with the battery pack 100 through the serial communication described above.

The first communication unit 310 of the information terminal device 300 communicates with the battery pack 100 by performing communication corresponding to the short-range wireless communication system. The control unit 320 is connected to the first communication unit 310 and controls the overall operation of the information terminal device 300. The control unit 320 executes the processing provided by the application software, for example, by executing the application software stored in the memory unit 330. The display portion 340 is a display for displaying information, and the operation portion 350 is an interface for receiving instructions from the user. The display unit 340 and the operation unit 350 may also be integrated as a touch panel. The second communication unit 360 communicates with the server device 500 via the network 400 in FIG. 1 by performing communication corresponding to the wireless communication system.

(2) Initial setting 3(a)-(g) show the outline of the initial settings in the charging and discharging system 1000. As shown in FIG. 3(a), the user of the information terminal device 300 installs application software on the control unit 320 and the storage unit 330 by operating the operation unit 350. For example, the second communication unit 360 receives application software from a server (not shown), and the control unit 320 stores the application software in the storage unit 330 and sets the application software to be executable. At this time, the installation can also be completed by capturing information attached to the side of the battery pack 100 from the information terminal device 300, such as QR (Quick Response) code.

After the application software is installed, the user of the information terminal device 300, as shown in FIG. 3(b), activates the application software by operating the operating part 350 while watching the screen displayed on the display part 340. For example, the control unit 320 activates the application software stored in the memory unit 330. After the application software is activated, the control unit 320 sends a search signal for searching the surrounding battery pack 100 via the first communication unit 310. After receiving the search signal, the first communication unit 140 of the battery pack 100 transmits identification information for identifying the battery pack 100 (hereinafter referred to as "battery ID"). The first communication unit 310 of the information terminal device 300 receives the battery ID from each of the surrounding battery packs 100. The control unit 320 displays a list of the received battery IDs on the display unit 340 as shown in FIG. 3(c). The user selects the set battery ID of the battery pack 100 by operating the operation unit 350 while viewing the list of battery IDs.

After the control unit 320 receives the selected battery ID, it displays the initial setting screen as shown in FIG. 3(e) on the display unit 340. The user operates the operation unit 350 while viewing the initial setting screen to input initial setting information. The initial setting information is for example (i) user information: name/address/telephone number/email address, (ii) use purpose selection: power outage countermeasures/mobile power supply/evacuation/other, (iii) use load selection: wisdom Type mobile phone charging/PC/refrigerator/TV/others, (iv) start date of use: YYYY year MM month DD day, (v) written commitment for disposal. After the input of the initial setting information is completed, the user clicks the "Close" button to end the initial setting. The click is received in the operation unit 350. The control unit 320 stores the initial setting information in the memory unit 330. As shown in FIG. 3(f), when the user clicks the set battery ID displayed on the display part 340, the control part 320 displays the basic screen shown in FIG. 3(g) on the display part 340. Return to Figure 2. The control unit 320 displays the basic screen, and requests the battery pack 100 to provide information via the first communication unit 310.

(3) Deterioration degree judgment The determination unit 160 of the control unit 120 measures various states of the battery 110, that is, the battery pack 100. The various states include, for example, the remaining battery power, SOH (State Of Health), the average temperature of the battery, the internal resistance of the battery, the elapsed period after the battery pack 100 is manufactured, the total charge capacity, the total discharge capacity, and the like. Here, the remaining power of the battery is the remaining power of the battery 110. SOH represents the ratio of the current fully charged capacity of the storage battery 110 to the initial fully charged capacity, for example, corresponds to the learning capacity. The elapsed period after the battery pack 100 is manufactured is measured based on the difference between the current date obtained by the clock function of the determining unit 160 and the manufacturing date of the battery pack 100 memorized by the storage unit 130. Known techniques can be used for these measurements, so the description is omitted here.

The judging unit 160 refers to the table stored in the storage unit 130 and judges the degree of deterioration of the battery pack 100 based on the various measured states. The degree of deterioration is a value indicating the degree of deterioration of the battery pack 100 from the initial state, and is expressed in, for example, five stages. FIG. 4 shows the data structure of the table memorized by the memory 130. Here, the degree of degradation becomes higher in the order of the degree of degradation A, the degree of degradation B, the degree of degradation C, the degree of degradation D, and the degree of degradation E. The degree of degradation A is a state where SOH is above 90%, the degree of degradation B is a state where SOH is less than 89% and more than 80%, and the degree of degradation C is a state where SOH is less than 79% and more than 70%, and the degree of degradation D is When SOH is less than 69% and above 60%, the degree of deterioration E is when SOH is less than 59%. That is, the degree of deterioration A is the lowest degree of deterioration, and represents the state closest to the initial state. On the other hand, the degree of deterioration E is the highest degree of deterioration, indicating the most severely deteriorated state. It can also be said that the degree of degradation A represents the state close to new products, the degree of degradation B represents the state of slight degradation, the degree of degradation C represents the state of severe degradation, the degree of degradation D represents the state before the life, and the degree of degradation E represents the state of the life. Here, the notification of the degree of deterioration D or E is equivalent to the notification of the recommendation to discard.

Here, the number of discharges means that a discharge of 10 wh or more is regarded as one time. The number of times of charging means that the case of charging 50 wh or more is regarded as one time. In addition, the average number of charge and discharge times means the number of times that is averaged on a monthly basis. Set Awh>Dwh, Bwh>Ewh, C time>F time, and set the conditions for easier migration (higher degradation) when the frequency of use is high. Return to Figure 2.

When the control unit 120 requests the first communication unit 140 to provide information from the information terminal device 300, it transmits the measurement result and the determination result in the determination unit 160 from the first communication unit 140 to the information terminal device 300. The first communication unit 310 of the information terminal device 300 receives the measurement results and the determination results from the battery pack 100 and outputs them to the control unit 320. The control unit 320 displays on the display unit 340 a basic screen reflecting the measurement results and determination results from the battery pack 100. 5(a)-(i) show the screens displayed by the display section 340. In particular, Figures 5(a)-(e) show basic screens with different degrees of degradation. The remaining battery power is indicated by an indicator and a numerical value (0-100%). For example, the indicator is red when the remaining battery power is 0-10%, yellow when the remaining battery power is 11-20%, and 21-100% when the remaining battery power is green. In addition, the degree of deterioration is shown graphically and graded as the battery state.

When the user clicks the "information" button shown in FIGS. 5(a)-(e), the control unit 320 displays the screen of FIG. 5(f) on the display unit 340. As shown in the figure, the "Q&A" button, the "Trade-in" button, and the "New product information" button are displayed. When the user clicks the "Q&A" button of FIG. 5(f), the control unit 320 displays the Q&A screen of FIG. 5(g) on the display unit 340. Q&A, user guide, and contact information are displayed on the Q&A screen. When the user clicks the "trade-in" button in FIG. 5(f), the control unit 320 displays the trade-in screen of FIG. 5(h) on the display unit 340. The trade-in screen shows the precautions and contact information when trade-in. When the user clicks the "new product information" button of FIG. 5(f), the control unit 320 displays the new product information screen of FIG. 5(i) on the display unit 340. New product information is displayed in the new product information. Return to Figure 2.

Here, in order to charge the battery pack 100, in the case where the battery pack 100 is mounted on the charging and discharging device 200, the following processing may be performed to determine the degree of deterioration. When the voltage of the battery 110 is less than a threshold value greater than the reference value for determining the voltage of the SOH as a degraded state, the charge-discharge circuit 210 is discharged until the voltage of the battery 110 reaches the reference value. Then the determination unit 160 determines SOH. Furthermore, the charging and discharging circuit 210 performs charging after the SOH determination.

(4) Disposal Disposal is performed when the degree of deterioration is D or E. 6(a)-(g) show the outline of the disposal process performed by the charging and discharging system 1000. FIG. 6(a) shows the basic screen displayed in the information terminal device 300 when the deterioration degree is E. When the displayed degradation degree is D or E, the user clicks the "Disposal" button. After the click is completed, the control unit 320 sends a notification of the mode change from the first communication unit 310 to the battery pack 100. The first communication unit 140 of the battery pack 100 receives the notification of the mode change from the information terminal device 300. After receiving the notification of the mode change, the control unit 120 executes the discard mode. The control unit 120 displays a notification for notifying the discard mode on the notification unit 150. For example, as shown in FIG. 6(b), the notification unit 150 performs a flow display in which only one LED is turned on in order from left to right of a plurality of LEDs.

The user installs the battery pack 100 in the waste mode on the charging and discharging device 200 as shown in FIG. 6(c). The control unit 120 detects the connection between the battery pack 100 and the charging and discharging device 200 by detecting the voltage change caused by the installation. The control unit 120 transmits information indicating the connection between the storage battery pack 100 and the charging and discharging device 200 to the information terminal device 300 via the first communication unit 140. The first communication unit 310 of the information terminal device 300 receives information indicating the connection between the battery pack 100 and the charging and discharging device 200. Accordingly, the control unit 320 displays the disposal screen shown in FIG. 6(d) on the display unit 340. The user clicks the "Start Waste Discharge" button. The control unit 320 transmits an instruction to start the waste discharge to the battery pack 100 via the first communication unit 310. The instruction to start the waste discharge is equivalent to the waste instruction.

The first communication unit 140 of the battery pack 100 receives an instruction from the information terminal device 300 to start discarding discharge. The control unit 120 displays a notification to notify the start of the waste discharge on the notification unit 150. For example, the notification unit 150 blinks all the plural LEDs as shown in FIG. 6(e). The second communication unit 170 sends an instruction to start the discard discharge to the charging and discharging device 200. The communication unit 230 of the charging and discharging device 200 receives an instruction to start the discarding discharge. According to this, the accepting unit 240 accepts the instruction to start the waste discharge. That is, when the battery pack 100 sends the degradation degree to the information terminal device 300 after the determination, and receives an instruction to start the discard discharge based on the degradation degree from the information terminal device 300, the receiving unit 240 receives the start discard discharge from the battery pack 100 The instructions.

When the receiving unit 240 accepts the instruction to start discarding and discharging, the charging and discharging circuit 210 uses a discharger 280 that reduces the capacity of the battery 110 to the battery pack 100 to perform discharge to a second level lower than the first level. The discharger 280 is, for example, a resistor. For example, the second level is defined as a value greater than or equal to the remaining power of the battery driven by the control unit 120, or the first communication unit 140 of the battery pack 100 can send the end of discharge to the information terminal device 300. At this time, the control unit 220 uses the cooling fan 270 used to cool the charging and discharging circuit 210 in the normal time for the cooling discharger 280.

The charging and discharging circuit 210 ends the discharge when the remaining battery power of the storage battery 110 reaches the second level. When the control unit 120 of the battery pack 100 detects the end of the discharge, it causes the notification unit 150 to display a notification for informing the end of the discharge. For example, the notification unit 150 turns off all the plural LEDs as shown in FIG. 6(f). The control unit 120 sends a notification of the end of the discharge to the information terminal device 300 via the first communication unit 140. The notification of the end of the discharge is equivalent to the notification of the completion of the preparation for disposal. Here, when the battery pack 100 enters a capacitance area lower than the first level, the control unit 120 can also cause the notification unit 150 to display a notification to notify the end of the discharge, or to notify the end of the discharge via the first communication unit 140 Send to the information terminal device 300. After these treatments, the charging and discharging circuit 210 continues to discharge to the second level.

The first communication unit 310 of the information terminal device 300 receives a notification of the end of discharge from the battery pack 100. As shown in FIG. 6(g), the control unit 320 causes the display unit 340 to display the instructions for discarding the battery pack 100. In addition, the control unit 320 transmits a notification of the end of the discharge to the server device 500 via the second communication unit 360. The battery ID is included in the notification of the end of the discharge. When the server device 500 receives the notification of the end of discharge, it registers the battery pack 100 that can be discarded based on the battery ID.

(5) Delivery to the supplier After the user attaches tape to the terminals of the battery pack 100, the user packs the battery pack 100 into a carton. The user sends the carton to a recyclable company. The disposal operator can confirm whether the battery pack 100 has been disposed of by pressing and holding the operation part 180 of the battery pack 100. When the disposal process is completed, the notification unit 150 only blinks the LEDs at both ends for 5 seconds, for example. In addition, by accessing the server device 500, the disposal operator can confirm whether the battery pack 100 has been disposed of.

The main body of the device, system, or method in the present disclosure has a computer. The computer executes the program to realize the functions of the main body of the device, system, or method in the present disclosure. The computer has a processor that operates according to a program as the main hardware structure. As long as the processor can realize the function by executing the program, there is no restriction on its type. The processor is composed of one or more electronic circuits including a semiconductor integrated circuit (IC (Integrated Circuit)) or LSI (Large Scale Integration). Multiple electronic circuits can be integrated on one chip, and can also be provided on multiple chips. Multiple chips can be combined in one device or can be equipped in multiple devices. Programs are recorded on non-transitory recording media such as ROM (Read Only Memory), optical discs, and hard disk drives that can be read by the computer. The program can be stored in the recording medium in advance, and can also be supplied to the recording medium via a wide area communication network including the Internet.

The operation of the charging and discharging system 1000 constructed above will be described. FIG. 7 is a sequence diagram showing the sequence of the disposal process performed by the charging and discharging system 1000. The charging and discharging device 200 is connected to the battery pack 100 (S10). The battery pack 100 determines the degree of deterioration (S12). The battery pack 100 transmits the degradation degree to the information terminal device 300 (S14). The information terminal device 300 notifies the disposal advice (S16), and accepts the instruction (S18). The information terminal device 300 transmits a discard instruction to the battery pack 100 (S20), and the battery pack 100 transmits a discard instruction to the charging and discharging device 200 (S22). The charging and discharging device 200 performs discharge to the second level (S24). The charging and discharging device 200 transmits the end of discharge to the battery pack 100 (S26), and the battery pack 100 transmits the end of discharge to the information terminal device 300 (S28). The information terminal device 300 notifies the end (S30), and sends the end of the discharge to the server device 500 (S32).

FIG. 8 is a flowchart showing the processing sequence performed by the charging and discharging system 1000. The charging and discharging circuit 210 of the charging and discharging device 200 performs normal charging and discharging (S100). The determination unit 160 determines the degree of degradation (S102). In the case where the degradation degree is not D or E (No in S104), return to step 100. When the degradation degree is D or E (Yes in S104), the information terminal device 300 notifies that the degradation degree is D or E (S106). If the discarding process is not promised (No in S108), return to step 100. If the disposal is promised (Yes in S108), the charging and discharging circuit 210 of the charging and discharging device 200 starts to discharge (S110). If the remaining power of the storage battery 110 is not less than 0% of the remaining power of the normal use range (No in S112), then standby. If the remaining power of the battery 110 is less than 0% of the remaining power of the normal use range (Yes in S112), the end of the discarding process is registered from the battery pack 100 to the server device 500 via the information terminal device 300 (S114). If the remaining power is not zero (No in S116), then stand by. If the remaining power is zero (Yes in S116), the process ends.

According to this embodiment, when a discard instruction based on the degradation degree is received from the information terminal device 300, the battery pack 100 performs discharge to the second level lower than the first level, so the management in the battery pack 100 can be used The battery pack 100 is safely discarded in various states. In addition, when the discharge reaches the end of the second level, a notification of the completion of the preparation for disposal is sent to the information terminal device 300, so that the user can be notified of the completion of the preparation for disposal. The cooling fan 270 cools the charging and discharging circuit 210 when the discharge reaches the first level, and the cooling fan 270 cools the discharger 280 when the discharge reaches the second level, so cooling can be effectively performed.

In addition, when the voltage is lower than the threshold value greater than the reference value for determining the deterioration state, the deterioration state is determined after the voltage reaches the reference value when the voltage is discharged, and charging is performed after the deterioration state is determined, so that the deterioration information can be determined. In addition, when the voltage is lower than the threshold value larger than the reference value of the voltage used to determine the deterioration state, the deterioration state is judged after the voltage reaches the reference value, and charging is performed after the deterioration state is judged. Therefore, repeated shallowness can be prevented. After discharging and charging, the SOH cannot be calculated. In addition, since the discharge is set to the second level, a notification of the end of the discharge can be sent. In addition, since the notification of the end of the discharge is sent, it can be confirmed whether the battery pack 100 has been disposed of by a disposal company.

The summary of one aspect of the present disclosure is as follows. A certain aspect of the charging and discharging system (1000) of the present disclosure includes: a battery pack (100); and a charging and discharging device (200), which can disassemble the battery pack (100), and when the battery pack (100) is installed Perform charging or discharging to the first level at the time. The battery pack (100) sends the degree of deterioration of the battery pack (100) to the information terminal device (300) after the determination, and receives a discard instruction based on the degree of deterioration from the information terminal device (300), and the charging and discharging device (200) receives The battery pack (100) that is instructed to be discarded is discharged to the second level lower than the first level.

The storage battery pack (100) can also send a notification of the completion of the preparation for disposal to the information terminal device (300) when it enters a capacity area lower than the first level.

When the battery pack (100) is discharged to the end of the second level, a notification of the completion of preparation for disposal can also be sent to the information terminal device (300).

The battery pack (100) can also memorize a threshold value larger than the reference value of the voltage used to determine the deterioration state of the battery pack (100), and when the voltage is below the threshold, the battery pack (100) can be discharged until the voltage reaches the reference value to determine the deterioration state, and Perform charging after the determination of the deterioration state.

Yet another aspect of the present disclosure is a charging and discharging device (200). The device is a charging and discharging device (200) with a removable battery pack (100), and is equipped with a charging and discharging part (210), which performs charging or discharging to the first level when the battery pack (100) is installed; And a receiving unit (240), which sends the deterioration degree of the battery pack (100) to the information terminal device (300) after the judgment on the battery pack (100), and receives a discard instruction based on the deterioration degree from the information terminal device (300) In this case, the battery pack (100) receives a discarding instruction. The charging and discharging unit (210) discharges the storage battery pack (100) to a second level lower than the first level when the receiving unit (240) accepts a discard instruction.

Yet another aspect of the present disclosure is also the charging and discharging device (200). The device is equipped with: a power plug (250), which is detachably connected to an external AC power source; a power supply part (260), which is detachably connected to an external electronic device; and a connection part, which can be electrically connected The battery pack (100) of other machines is connected in a state of being removed from other machines; the charging and discharging circuit (210), which converts the DC power output from the battery pack (100) connected to the connection part into AC power, and The AC power is output to the power supply unit and charges the battery pack (100) connected to the connection unit; cooling fan (270), which suppresses the temperature rise of the charging and discharging circuit (210); discharger (280), which makes the battery The capacitance of the battery pack (100) is reduced; and the control unit (220), which reduces the capacitance of the battery pack (100), uses the cooling fan (270) to cool the charging and discharging circuit (210) to perform the operation from the discharger (280) ) The heating and cooling.

(Example 2) Next, Example 2 will be described. Embodiment 2 is the same as Embodiment 1, and relates to a charging and discharging system that can perform charging and discharging of a battery pack by connecting the battery pack to a charging and discharging device. The second embodiment is different from the first embodiment in that it does not include the information terminal device 300, the network 400, and the server device 500. Describe here. Here, (1) configuration, (2) initial setting, (3) deterioration degree determination, and (4) disposal process will be explained in order, focusing on the difference from the previous one. Since (5) delivery to the supplier is the same as in the first embodiment, the description is omitted here.

(1) Composition The charging and discharging system 1000 of the second embodiment is of the same type as in FIGS. 1 and 2, but as described above, it does not include the information terminal device 300, the network 400, and the server device 500, but includes the battery pack 100 and the charging and discharging device 200.

(2) Initial setting When the battery pack 100 is installed in the charging and discharging device 200 for the first time, the charging and discharging circuit 210 of the charging and discharging device 200 charges the battery 110 of the battery pack 100. When the control unit 120 detects that the battery 110 is fully charged for the first time, the control unit 120 completes the initial setting.

(3) Deterioration degree judgment The degree of deterioration was determined in the same manner as in Example 1. When the user presses the operation part 180 of the battery pack 100 for a long time, the control part 120 notifies the notification part 150 of the deterioration degree. For example, in a case where 5 LEDs are provided and the LEDs and the degradation degree are in one-to-one correspondence, the notification unit 150 lights only the LED corresponding to the determined degradation degree for 5 seconds. In the case of the deterioration degree E, all the LEDs can also blink. Here, the notification of the degree of deterioration D or E is equivalent to the notification of the recommendation to discard.

On the other hand, when the operation unit 180 is not long-pressed, the notification unit 150 uses 5 LEDs to notify the remaining battery power. For example, when the remaining battery power is 0-10%, all LEDs are off, when the remaining battery power is 11-20%, 1 LED is on, and when the remaining battery power is 21-40%, 2 LEDs are on. . Also, when the remaining battery power is 41-60%, 3 LEDs will light up, when the remaining battery power is 61-80%, 4 LEDs will light up, and when the remaining battery power is 81-100%, 5 LEDs will be on. Lights up.

(4) Disposal When the deterioration degree notified by the notification unit 150 is D or E through the above processing, when the user presses the operation unit 180 for a long time, the control unit 120 executes the discard mode. The long press is, for example, 7 seconds. The control unit 120 displays a notification for notifying the discard mode on the notification unit 150. 9(a)-(b) show the outline of the disposal process performed by the charging and discharging system 1000. For example, as shown in FIG. 9(a), the notification unit 150 executes a flow display in which only one LED is turned on in order from left to right of a plurality of LEDs.

The user installs the battery pack 100 in the waste mode on the charging and discharging device 200 as shown in FIG. 9(b). The control unit 120 detects the connection between the battery pack 100 and the charging and discharging device 200 by detecting the voltage change caused by the installation. In this state, when the user presses the operation part 180 for a long time, a notification used by the control part 120 to notify the start of the waste discharge is displayed on the notification part 150. For example, the notification unit 150 blinks all of the plurality of LEDs in the same manner as in FIG. 6(c). The second communication unit 170 sends an instruction to start the discard discharge to the charging and discharging device 200. The communication unit 230 of the charging and discharging device 200 receives an instruction to start the discarding discharge. According to this, the accepting unit 240 accepts the instruction to start the waste discharge. That is, when the battery pack 100 notifies the disposal advice based on the determined degradation degree and accepts the instruction to start the disposal discharge corresponding to the disposal advice, the receiving unit 240 accepts the instruction to start the disposal discharge from the battery pack 100.

The charging and discharging circuit 210 discharges the storage battery pack 100 to a second level lower than the first level when the receiving unit 240 accepts an instruction to start discarding and discharging. The charging and discharging circuit 210 ends the discharge when the remaining battery power of the storage battery 110 reaches the second level. When the control unit 120 of the battery pack 100 detects the end of the discharge, it displays a notification to notify the end of the discharge on the notification unit 150. For example, the notification unit 150 turns off all the plurality of LEDs, as in FIG. 6(f).

The operation of the charging and discharging system 1000 constructed above will be described. FIG. 10 is a sequence diagram showing the sequence of the disposal process performed by the charging and discharging system 1000. The charging and discharging device 200 is connected to the battery pack 100 (S200). The battery pack 100 determines the degree of deterioration (S202). The battery pack 100 notifies the disposal advice (S204), and accepts the instruction (S206). The battery pack 100 transmits a discard instruction to the charging and discharging device 200 (S208). The charging and discharging device 200 performs discharge to the second level (S210). The charging and discharging device 200 transmits the end of discharge to the battery pack 100 (S212), and the battery pack 100 notifies the end (S214).

According to this embodiment, since the notification unit 150 of the storage battery pack 100 notifies various information, the terminal device 300 can still perform discharge for discarding even if there is no information. In addition, since the non-information terminal device 300 still performs discharge for discarding, the degree of freedom of configuration can be increased.

The summary of one aspect of the present disclosure is as follows. Another aspect of the present disclosure is also the charging and discharging system (1000). The charging and discharging system (1000) is equipped with: a battery pack (100); and a charging and discharging device (200), which can disassemble the battery pack (100), and perform charging or discharging to the battery pack (100) when the battery pack (100) is installed Level 1. The battery pack (100) notifies the disposal recommendation based on the degree of deterioration of the judged battery pack (100), and accepts the disposal instruction corresponding to the disposal recommendation, and the charging and discharging device (200) discharges the battery pack (100) that received the disposal instruction To the second level below the first level.

Yet another aspect of the present disclosure is also the charging and discharging device (200). The device is a charging and discharging device (200) with a removable battery pack (100), and is equipped with a charging and discharging part (210), which performs charging or discharging to the first level when the battery pack (100) is installed; And the acceptance section (240), which accepts from the battery pack (100) when the battery pack (100) notifies the disposal recommendation based on the degree of deterioration of the battery pack (100) determined, and accepts the disposal instruction corresponding to the disposal recommendation Discard instructions. The charging and discharging unit (210) discharges the storage battery pack (100) to a second level lower than the first level when the receiving unit (240) accepts a discard instruction.

The present disclosure has been described above based on the embodiments. This embodiment is an example, and those in the industry should understand that there can be many variations in the combination of the constituent elements or the processing processes, and such variations are also within the scope of the present disclosure.

100: battery pack 110: battery 120: Control Department 130: Memory Department 140: The first communications department 150: Notification Department 160: Judgment Department 170: The 2nd Communication Department 180: Operation Department 200: charging and discharging device 210: charge and discharge circuit 220: Control Department 230: Ministry of Communications 240: Acceptance Department 250: Power plug 260: Power Supply Department 270: cooling fan 280: Discharger 300: Information terminal device 310: First Communication Department 320: Control Department 330: Memory Department 340: Display 350: Operation Department 360: 2nd Communication Department 400: Internet 500: Server device 1000: charge and discharge system S10~S32: steps S100~S116: steps S200~S214: steps

FIG. 1 is a diagram showing the structure of the charging and discharging system of the first embodiment. FIG. 2 is a diagram showing the structure of the charging and discharging system of FIG. 1. FIG. Figures 3(a)-(g) are diagrams showing the outline of the initial settings of the charging and discharging system of Figure 1; FIG. 4 is a diagram showing the data structure of the table memorized in the memory part of FIG. 2. FIG. Figures 5(a)-(i) are diagrams showing the screens displayed on the display part of Figure 2; Figures 6(a)-(g) are diagrams showing the outline of the waste treatment performed by the charging and discharging system of Figure 1; FIG. 7 is a sequence diagram showing the sequence of the disposal process performed by the charging and discharging system of FIG. 1. FIG. FIG. 8 is a flowchart showing the processing sequence performed by the charging and discharging system of FIG. 1. FIG. Figures 9(a)-(b) are diagrams showing the outline of the disposal process performed by the charging and discharging system of the second embodiment. FIG. 10 is a sequence diagram showing the sequence of the disposal process performed by the charging and discharging system of the second embodiment.

100: battery pack

200: charging and discharging device

300: Information terminal device

400: Internet

500: Server device

1000: charge and discharge system

Claims (7)

A charging and discharging system, which has: Battery pack; and A charging and discharging device, which can disassemble and assemble the above-mentioned battery pack, and perform charging or discharging to the first level when the above-mentioned battery pack is installed; and The battery pack, after determining the degree of deterioration of the battery pack, transmits the degree of deterioration to an information terminal device, and receives a discard instruction based on the degree of deterioration from the information terminal device; The charging and discharging device discharges the battery pack that has received the instruction to discard to a second level lower than the first level. Such as the charging and discharging system of claim 1, wherein when the above-mentioned battery pack enters a capacity area lower than the above-mentioned first level, a notification of the completion of preparation for disposal is sent to the above-mentioned information terminal device. Such as the charging and discharging system of claim 1, wherein when the above-mentioned battery pack is discharged to the end of the above-mentioned second level, a notification of completion of disposal preparation is sent to the above-mentioned information terminal device. A charging and discharging system, which has: Battery pack; and A charging and discharging device, which can disassemble and assemble the above-mentioned battery pack, and perform charging or discharging to the first level when the above-mentioned battery pack is installed; and The above-mentioned battery pack notification is based on the judgment of the deterioration of the above-mentioned battery pack’s disposal advice, and the disposal instructions corresponding to the above-mentioned disposal advice are accepted; The charging and discharging device discharges the storage battery pack that has received a discard instruction to a second level lower than the first level. Such as the charging and discharging system of any one of claims 1 to 4, wherein the storage battery pack has a threshold value larger than the reference value of the voltage used to determine the deterioration state of the storage battery pack, when the voltage is below the threshold value , After discharging until the voltage reaches the reference value, the deterioration state is judged, and the charging is performed after the deterioration state is judged. A charging and discharging device, which is a detachable battery pack, and has: The charging and discharging part, which performs charging or discharging to the first level when the above-mentioned battery pack is installed; and An accepting unit that accepts disposal from the battery pack when the battery pack determines the degree of deterioration of the battery pack and transmits the degree of deterioration to the information terminal device, and receives a discard instruction based on the degree of deterioration from the information terminal device Instructions; and The charging and discharging unit discharges the battery pack to a second level lower than the first level when the accepting unit accepts a discard instruction. A charging and discharging device, which is a detachable battery pack, and has: The charging and discharging part, which performs charging or discharging to the first level when the above-mentioned battery pack is installed; and Acceptance section, which accepts a discard instruction from the battery pack when the battery pack notifies a disposal recommendation based on the determined degree of degradation of the battery pack, and accepts a discard instruction corresponding to the discard recommendation; and The charging and discharging unit discharges the battery pack to a second level lower than the first level when the accepting unit accepts a discard instruction.

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