Measurement systems and devices

Abstract

To make it possible to make measurements on a power storage device built into a power storage apparatus.SOLUTION: A measurement system includes a power storage apparatus into which a power storage device is built and a measurement device for measuring the state of the power storage device built into the power storage apparatus. The power storage apparatus includes a to-be-connected part that exchanges electricity with the outside, an interrupting part that sets the to-be-connected part and the power storage device in a state of de-energizing or energizing, and a to-be-transmitted part that controls the interrupting part to form the energizing state when a signal is transmitted to the interrupting part for forming the energizing state. The measurement device includes a measurement part that is connected to the to-be-transmitted part and measures the state of the power storage device and a transmission part that transmits the signal to the to-be-transmitted part.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a measurement system, a power storage device, and a measurement device. [Background technology]

[0002] Patent Document 1 discloses a measurement system that measures a vehicle battery pack using a battery cell reuse determination device.

[0003] Each battery cell contained in the vehicle battery pack is connected to a control line, which is connected to a reuse determination device.

[0004] The reuse determination device measures the state of the battery cells connected to each control line. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent Publication No. 2021-064459 Summary of the Invention [Problem to be solved by the invention]

[0006] BACKGROUND ART In a power storage device such as a vehicle battery pack, a device is known in which a relay is provided between a terminal and a battery cell to prevent power from being inadvertently output from the terminal that inputs and outputs power.

[0007] When such a power storage device is used, even if a measuring device is connected to the terminals of the power storage device, it is not possible to measure the built-in battery cells.

[0008] The present invention has been made in consideration of the above-mentioned problems, and has an object to enable measurement of an electricity storage device built into an electricity storage apparatus. [Means for solving the problem]

[0009] A measurement system according to one aspect of the present invention is a measurement system including a power storage device built in, and a measurement device built in the power storage device that measures the state of the power storage device. The power storage device includes a connected part that exchanges electricity with an external device, and a transmitted part that controls the interrupting part to establish the current-carrying state when a signal for establishing the current-carrying state is transmitted to the interrupting part. The power storage device includes a transmitted part to which a signal for establishing the current-carrying state is transmitted to the interrupting part. The measurement device includes a measurement part connected to the connected part that measures the state of the power storage device, and a transmitting part that transmits the signal to the transmitted part. [Effects of the Invention]

[0010] In this aspect, when a signal is transmitted from the transmitting section of the measuring device to the transmitted section of the power storage device, the transmitted section controls the on-off section to establish a conducting state.

[0011] Then, in the power storage apparatus, the connected portion and the power storage device are brought into a conducting state, and the measuring portion of the measuring device is connected to the power storage device via the connected portion of the power storage device.

[0012] This allows the measurement unit to measure the electricity storage device.

[0013] Therefore, the storage device has an interruption section between the connected section and the storage device to prevent power from being inadvertently output from the connected section, and by connecting it to a measuring device, it becomes possible to measure the state of the storage device built into the storage device. [Brief explanation of the drawings]

[0014] [Figure 1] FIG. 1 is a schematic diagram showing a charging port of a vehicle to which a measurement system according to a first embodiment is applied. [Figure 2] FIG. 2 is an explanatory diagram showing the measurement system according to the first embodiment. [Figure 3] FIG. 3 is an explanatory diagram showing a measurement system according to a first modified example of the first embodiment. [Figure 4] FIG. 4 is an explanatory diagram showing a measurement system according to a second modified example of the first embodiment. [Figure 5] FIG. 5 is an explanatory diagram showing a measurement system according to the second embodiment. [Figure 6] FIG. 6 is an explanatory diagram showing a measurement system according to the third embodiment. [Figure 7] FIG. 7 is an explanatory diagram showing a measurement system according to the fourth embodiment. [Figure 8] FIG. 8 is an explanatory diagram showing a terminal used in the measurement system according to the fifth embodiment. [Figure 9] FIG. 9 is an explanatory diagram showing a terminal used in the measurement system according to the sixth embodiment. [Figure 10] FIG. 10 is an explanatory diagram showing a terminal used in the measurement system according to the seventh embodiment. [Figure 11] FIG. 11 is an explanatory diagram showing a terminal used in the measurement system according to the eighth embodiment. [Figure 12] FIG. 12 is an explanatory diagram showing a measurement system according to the ninth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0015] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0016] First Embodiment Fig. 1 is a schematic diagram showing a charging port 14 of a vehicle 12 to which a measurement system 10 according to the first embodiment is applied. Fig. 2 is an explanatory diagram showing the measurement system 10 according to the first embodiment.

[0017] 1 and 2, a measurement system 10 is a system that measures the state of a power storage device 22 mounted on a vehicle 12. The power storage device 22 constitutes a power source for a drive device that drives the vehicle 12.

[0018] Here, in the first embodiment, an example will be described in which the measurement system 10 measures the state of the power storage device 22 mounted on the vehicle 12, but the first embodiment is not limited to this. The measurement system 10 may be used to measure the power storage device 22 mounted on a motorcycle or the power storage device 22 mounted on a personal computer, for example. The measurement system 10 may also be used to measure the power storage device 22 removed from the vehicle 12, motorcycle, or personal computer.

[0019] Vehicle 12 is provided with a charging port 14 for externally charging power storage device 20 of power storage device 22. Charging port 14 is used for rapid charging of power storage device 20. By using this charging port 14, the state of power storage device 22 is measured when power storage device 22 is mounted on vehicle 12.

[0020] As shown in FIG. 2, the measurement system 10 includes a power storage apparatus 22 that incorporates a power storage device 20, and a measurement device 24 that measures the state of the power storage device 20 incorporated in the power storage apparatus 22.

[0021] (Electricity storage device) The electricity storage device 22 includes an insulating exterior 30. The exterior 30 houses the electricity storage device 20 therein.

[0022] The power storage device 20 may be a storage battery capable of charging and discharging electricity or a capacitor module equipped with a capacitor. The power storage device 20 of the first embodiment is constituted by a storage battery.

[0023] The power storage device 20 is made up of a plurality of battery cells 32 connected in series. Each power storage device 20 made up of the battery cells 32 outputs a voltage of 300V or more and 400V or less, for example.

[0024] The exterior 30 of the electricity storage device 22 is provided with a positive electrode connection part 40 for transmitting and receiving electricity to and from the outside. The positive electrode connection part 40 is, for example, formed of a metal cylinder. The positive electrode connection part 40 protrudes from the exterior 30. The positive electrode connection part 40 is connected to the positive electrode of the electricity storage device 20 via a positive electrode wiring 42.

[0025] The exterior casing 30 of the electricity storage device 22 is provided with a negative electrode connection part 44 for transmitting and receiving electricity to and from the outside. The negative electrode connection part 44 is, for example, a metal cylinder. The negative electrode connection part 44 protrudes from the exterior casing 30. The negative electrode connection part 44 is connected to the negative electrode of the electricity storage device 20 via a negative electrode wiring 46.

[0026] The negative electrode wiring 46 that connects the negative electrode connected part 44 and the negative electrode of the electricity storage device 20 is provided with an interrupting part 48 that selectively puts the negative electrode connected part 44 and the negative electrode of the electricity storage device 20 in a non-conductive state or a conductive state. The interrupting part 48 can also be provided on the positive electrode wiring 42 that connects the positive electrode connected part 40 and the positive electrode of the electricity storage device 20.

[0027] The interrupter 48 is configured by, for example, a relay, a FET (Field Effect Transistor), or a transistor. The interrupter 48 in the first embodiment is configured by a relay. It is also possible to provide a plurality of relays.

[0028] When a voltage signal is applied, the interrupter 48 turns on the switch circuit 50, bringing the negative electrode connected part 44 and the negative electrode of the electricity storage device 20 into a conducting state.

[0029] Furthermore, during normal times when no voltage signal is applied, the interrupter 48 turns off the switch circuit 50, bringing the negative electrode connected portion 44 and the negative electrode of the electricity storage device 20 into a non-conductive state.

[0030] This prevents the output voltage of the electricity storage device 20 from being applied between the positive electrode connection part 40 and the negative electrode connection part 44 exposed to the outside of the exterior casing 30 under normal circumstances.

[0031] The power storage device 22 includes a transmitted part 60 that controls the interrupter 48 to establish the energized state when a signal for establishing the energized state is transmitted by the interrupter 48.

[0032] The transmitted portion 60 includes a receiving portion 62 that receives a signal and controls the interrupting portion 48 .

[0033] The receiving portion 62 has a first receiving male terminal 64 and a second receiving male terminal 66. Each receiving male terminal 64, 66 is formed as a cylindrical body made of metal, for example. Each receiving male terminal 64, 66 protrudes from the outer casing 30.

[0034] For example, the receiving unit 62 receives voltage signals from the receiving male terminals 64, 66. The received voltage signals are signals of a voltage required to operate the interrupter 48.

[0035] As an example, a voltage signal of 5V or 12V is applied to the first receiving male terminal 64 of the receiving portion 62. Also, a ground signal of 0V is applied to the second receiving male terminal 66 of the receiving portion 62.

[0036] The transmitted unit 60 also includes a power storage side communication unit 70 that communicates with a measurement side communication unit 96 (described later) of the measuring device 24 to receive a signal and controls the interrupter 48 in accordance with the signal.

[0037] The communication method used for communication between the power storage device 22 and the measurement device 24 includes I2C (Inter-Integrated Circuit) communication, SPI (Serial Peripheral Interface) communication, serial communication using RS-232C or the like, and parallel communication.

[0038] Furthermore, communication between the power storage device 22 and the measurement device 24 can be performed using a LAN (Local Area Network), a LIN (Local Interconnect Network), or a CAN (Controller Area Network). Communication between the power storage device 22 and the measurement device 24 can be performed using power line communication (PLC). Communication between the power storage device 22 and the measurement device 24 can also be performed using Ethernet (registered trademark).

[0039] The power-storage-side communication unit 70 has a first communication male terminal 72 and a second communication male terminal 74. Each communication male terminal 72, 74 is, for example, a cylindrical metal body. Each communication male terminal 72, 74 protrudes from the exterior casing 30.

[0040] The signals sent from the measuring device 24 via the male communication terminals 72, 74 include commands that instruct the operation of the power storage device 22. As an example, these commands include a current-carrying command that controls the interrupter 48 to bring the negative electrode of the power storage device 20 and the negative electrode connected portion 44 into a current-carrying state, and a current-deactivating command that brings the negative electrode of the power storage device 20 and the negative electrode connected portion 44 into a current-deactivating state.

[0041] When the power-on command is input, the power-storage-side communication unit 70 controls the power-receiving unit 62, and activates the interrupter 48 by the voltage signal received by the power-receiving unit 62 to turn on the switch circuit 50. This places the negative electrode connected part 44 and the negative electrode of the power storage device 20 in a power-on state.

[0042] When the power storage-side communication unit 70 receives the de-energization command, it controls the supply-receiving unit 62 to cut off the supply of the voltage signal to the interrupter 48 and turns off the switch circuit 50. This places the negative electrode connected unit 44 and the negative electrode of the power storage device 20 in a de-energized state.

[0043] The receptacle portions 40, 44, the receiving male terminals 64, 66, and the communication male terminals 72, 74 are arranged in the charging port 14 (see FIG. 1).

[0044] In the first embodiment, the case where each of the connected portions 40, 44, each of the receiving male terminals 64, 66, and each of the communication male terminals 72, 74 protruding from the exterior 30 of the storage device 22 are arranged in the charging port 14 (see Figure 1) is described, but the first embodiment is not limited to this.

[0045] For example, when the charging port 14 and the power storage device 22 are separated from each other, each of the connected portions 40, 44, each of the receiving male terminals 64, 66, and each of the communication male terminals 72, 74 provided on the charging port 14 may be connected to corresponding locations on the power storage device 22 by a cable or the like.

[0046] Furthermore, even when the power storage device 22 is removed from the vehicle 12, the power storage device 22 has portions corresponding to the receptacle portions 40, 44, the receptacle male terminals 64, 66, and the communication male terminals 72, 74 for connecting to the vehicle 12. Therefore, the portions corresponding to the receptacle portions 40, 44, the receptacle male terminals 64, 66, and the communication male terminals 72, 74 can be used in the connection structure between the measuring device 24 and the power storage device 22.

[0047] Furthermore, the connection structure between the measuring device 24 and the power storage device 22 can be used as a connection structure between the measuring device 24 and a fuel cell stack, or a connection structure between the measuring device 24 and a solar cell module.

[0048] (Measuring equipment) The measurement device 24 includes a measurement device 80 and a connection section 84 connected to the measurement device 80 via a cable 82 .

[0049] The measuring instrument 80 includes a measuring unit 90 and a transmitting unit 92. The transmitting unit 92 transmits a signal to the transmitted unit 60 of the power storage device 22.

[0050] (Transmission part of measuring instrument) The transmission unit 92 includes a supply unit 94 that supplies a signal for controlling the interrupter 48 of the power storage device 22. The supply unit 94 supplies a voltage signal to the power storage device 22, for example.

[0051] The supplied voltage signal is a signal of a voltage necessary to operate the interrupter 48 of the power storage device 22. The voltage signal supplied by the supply unit 94 is, for example, a voltage signal of 5V or 12V.

[0052] The transmission unit 92 also includes a measurement-side communication unit 96 that outputs a signal for controlling the interrupter 48 to establish a conducting state.

[0053] The signal output by the measurement-side communication unit 96 includes a command that instructs the operation of the power storage device 22. As an example, the command includes a current-carrying command that controls the interrupter 48 to bring the negative electrode of the power storage device 20 and the negative-electrode connected part 44 into a current-carrying state, and a current-deactivating command that brings the negative electrode of the power storage device 20 and the negative-electrode connected part 44 into a current-deactivating state.

[0054] When the measurement-side communication unit 96 outputs a power supply command to the power storage device 22, the output voltage of the power storage device 20 is applied to each of the connected parts 40, 44 of the power storage device 22. This enables electricity to be exchanged between the power storage device 20 of the power storage device 22 and the outside via each of the connected parts 40, 44.

[0055] When the measurement-side communication unit 96 outputs a de-energization command to the power storage device 22, the power storage device 20 is de-energized from each of the connected parts 40, 44 of the power storage device 22. This disables the power storage device 20 of the power storage device 22 from exchanging electricity with the outside.

[0056] (Measuring part of the measuring instrument) The measuring unit 90 is connected to each of the connected parts 40 , 44 of the power storage device 20 , and measures the state of the power storage device 20 .

[0057] The measuring unit 90 has a voltage measuring unit 100 that measures the voltage of the power storage device 20, and a current measuring unit 102 that measures the current flowing through the power storage device 20. The measuring unit 90 calculates the impedance of the power storage device 20 based on the voltage measured by the voltage measuring unit 100 and the current measured by the current measuring unit 102, and measures the state of the power storage device 20. The calculated impedance includes AC impedance.

[0058] The current measuring unit 102 includes a signal generating unit 104. A signal generated by the signal generating unit 104 is applied to the power storage device 20.

[0059] The current measuring unit 102 measures, as a measurement signal, the current flowing through the power storage device 20 while the signal generated by the signal generating unit 104 is being passed through the power storage device 20 of the power storage apparatus 22. The current measuring unit 102 also measures, as a measurement signal, the current flowing from the power storage device 20.

[0060] The current flowing to and from the power storage device 20 is less than 5 A. The current flowing to and from the power storage device 20 varies depending on the capacity of the power storage device 20.

[0061] As an example of a method for obtaining the capacity of the power storage device 20, a method for obtaining the capacity by performing communication between the measurement device 24 and the power storage device 22 can be given.

[0062] Specifically, the current flowing to and from the power storage device 20 is less than 0.05 C. C represents the capacity of the power storage device 20, and as an example, if the capacity of the power storage device 20 is 100 Ah, the current is 0.05×100=5 A.

[0063] The smaller the current flowing through the power storage device 20, the less the effect it has on the power storage device 20. Furthermore, the smaller the current flowing through the power storage device 20, the less the state of the power storage device 20 changes. Therefore, the smaller the current flowing through the power storage device 20, the more stable the measurement results that the measuring device 24 can obtain.

[0064] For example, if the current flowing through the power storage device 20 is 5 A or more, an on-board monitoring device that monitors the state of the power storage device 20 may detect an abnormality. In this case, depending on the function of the monitoring device, the vehicle 12 may become unable to start or run.

[0065] Therefore, by setting the current flowing through the power storage device 20 to less than 5 A, it is possible to suppress the detection of abnormalities by the monitoring device.

[0066] On the other hand, if the current flowing through the power storage device 20 is too small, the voltage change due to the internal resistance of the power storage device 20 will be small, and the measurement results will be more susceptible to the influence of noise.

[0067] As an example, when the output voltage of the power storage device 20 is 400V and the internal resistance of the power storage device 20 is 0.03Ω or more and 0.10Ω or less, the current flowing through the power storage device 20 is desirably set in the range of 1A or more and less than 5A.

[0068] If the measuring device 24 has a function of removing noise, the current flowing through the power storage device 20 can be measured even if it is less than 1 A.

[0069] The measurement signal may include a sine wave or a square wave.

[0070] When the measurement signal is a sine wave, the frequency of the measurement signal can be set to a band in which the frequency response of the electrolyte and wiring of the storage battery, which is the electricity storage device 20, can be measured. Also, when the measurement signal is a sine wave, the frequency of the measurement signal can be set to a band in which the frequency response of the electrode reaction process of the electricity storage device 20 can be measured. Furthermore, when the measurement signal is a sine wave, the frequency of the measurement signal can be set to a band in which the frequency response of the diffusion process in the electricity storage device 20 can be measured.

[0071] To express the frequency of the aforementioned measurement signal numerically, if the measurement signal is a sine wave, the frequency of the measurement signal can be 10 kHz or more and 100 Hz or less. Also, if the measurement signal is a sine wave, the frequency of the measurement signal can be 5 kHz or more and 500 Hz or less. Furthermore, if the measurement signal is a sine wave, the frequency of the measurement signal can be 1 kHz.

[0072] Here, it is known that a measurement signal of 1 kHz has a high correlation with the state of the power storage device 20. Therefore, by setting the frequency of the measurement signal to 1 kHz, it becomes possible to measure the state of the power storage device 20 with higher accuracy.

[0073] Furthermore, by fixing the frequency of the measurement signal at 1 kHz, measurements can be easily performed in a short time using a single frequency.

[0074] The measurement signal can be an M-sequence signal, which is a pseudo-white binary signal and an artificially generated random signal.

[0075] When the measurement signal is a square wave, the square wave contains multiple frequency components, so by making the measurement signal a square wave, it is possible to simplify the measurement compared to inputting multiple signals of a single frequency.

[0076] Then, the measuring unit 90 measures the frequency response of the power storage device 20 based on the change in voltage measured by the voltage measuring unit 100 and the change in current measured by the current measuring unit 102, and acquires the AC resistance. Furthermore, the measuring unit 90 estimates the degree of deterioration of the power storage device 20 measured from the acquired AC resistance based on the relationship between the AC resistance of the power storage device 20 and the degree of deterioration of the power storage device 20 acquired in advance.

[0077] (Connection) 1, connecting portion 84 constitutes a connector that is detachably attached to charging port 14. Connecting portion 84 is made of an insulating material.

[0078] As shown in FIG. 2, the connection portion 84 is formed with a positive electrode insertion hole 110 into which the positive electrode connected portion 40 of the power storage device 22 is inserted, and a negative electrode insertion hole 112 into which the negative electrode connected portion 44 is inserted.

[0079] A metallic positive electrode voltage detection part 114 is provided on the outer periphery of the positive electrode insertion hole 110 and comes into contact with the outer periphery of the positive electrode connection part 40 when the positive electrode connection part 40 is inserted into the positive electrode insertion hole 110. The positive electrode voltage detection part 114 is formed of a circular ring plate with a circular hole in the center.

[0080] The positive electrode voltage detection unit 114 is connected to the positive electrode of the voltage measurement unit 100 via a positive electrode voltage line 116. As a result, the positive electrode of the voltage measurement unit 100 is electrically connected to the positive electrode connection part 40 via the positive electrode voltage detection unit 114, which is in contact with the positive electrode connection part 40.

[0081] A metallic positive electrode current detection part 120 is provided at the back of the positive electrode insertion hole 110 and comes into contact with the tip of the positive electrode connection part 40 when the positive electrode connection part 40 is inserted into the positive electrode insertion hole 110. The positive electrode current detection part 120 is formed in a cylindrical shape with a bottom.

[0082] The positive electrode current detection unit 120 is connected to the positive electrode of the current measurement unit 102 via a positive electrode current line 122 that is thicker than the positive electrode voltage line 116. As a result, the positive electrode of the current measurement unit 102 is electrically connected to the positive electrode connection part 40 via the positive electrode current detection unit 120 that contacts the positive electrode connection part 40.

[0083] The connection position where the positive electrode voltage detection unit 114 is electrically connected to the positive electrode connection part 40 is set to be different from the connection position where the positive electrode current detection unit 120 is electrically connected to the positive electrode connection part 40.

[0084] Specifically, in the current path connecting the energy storage device 20 and the measuring unit 90, the connection position where the positive electrode voltage detection unit 114 is electrically connected to the positive electrode connection part 40 is closer to the energy storage device 20 than the connection position where the positive electrode current detection unit 120 is electrically connected to the positive electrode connection part 40.

[0085] A metallic negative electrode voltage detection part 130 is provided on the outer periphery of the negative electrode insertion hole 112. The negative electrode voltage detection part 130 comes into contact with the outer periphery of the negative electrode connection part 44 when the negative electrode connection part 44 is inserted into the negative electrode insertion hole 112. The negative electrode voltage detection part 130 is formed of a circular ring plate with a circular hole in the center.

[0086] The negative electrode voltage detection unit 130 is connected to the negative electrode of the voltage measurement unit 100 via a negative electrode voltage line 132. As a result, the negative electrode of the voltage measurement unit 100 is electrically connected to the negative electrode connection part 44 via the negative electrode voltage detection unit 130, which is in contact with the negative electrode connection part 44.

[0087] A metallic negative electrode current detection part 140 is provided at the back of the negative electrode insertion hole 112. The negative electrode current detection part 140 comes into contact with the tip of the negative electrode connection part 44 when the negative electrode connection part 44 is inserted into the negative electrode insertion hole 112. The negative electrode current detection part 140 is formed in a cylindrical shape with a bottom.

[0088] The negative electrode current detection unit 140 connects the negative electrode voltage line 132 to the negative electrode of the current measurement unit 102 via a thicker negative electrode current line 142. As a result, the negative electrode of the current measurement unit 102 is electrically connected to the negative electrode connection part 44 via the negative electrode current detection unit 140, which is in contact with the negative electrode connection part 44.

[0089] The connection position where the negative electrode voltage detection unit 130 is electrically connected to the negative electrode connection portion 44 is set to be different from the connection position where the negative electrode current detection unit 140 is electrically connected to the negative electrode connection portion 44.

[0090] Specifically, in the current path connecting the energy storage device 20 and the measuring unit 90, the connection position where the negative electrode voltage detection unit 130 is electrically connected to the negative electrode connection portion 44 is closer to the energy storage device 20 than the connection position where the negative electrode current detection unit 140 is electrically connected to the negative electrode connection portion 44.

[0091] The connection portion 84 is provided with a first supply female terminal 150 made of metal into which the first supply male terminal 64 of the power storage device 22 is inserted. The first supply female terminal 150 is cylindrical with a bottom, and is connected to one output of the supply portion 94 via a harness 152.

[0092] Furthermore, the connection portion 84 is provided with a second supply female terminal 154 made of metal into which the second supply receiving male terminal 66 of the electricity storage device 22 is inserted. The second supply female terminal 154 is cylindrical with a bottom, and is connected to the other output of the supply portion 94 via a harness 156.

[0093] This makes it possible to supply the output of the supply unit 94 to the receiving unit 62 of the storage device 22 with the first receiving male terminal 64 inserted into the first supply female terminal 150 and the second receiving male terminal 66 inserted into the second supply female terminal 154.

[0094] The connection portion 84 is provided with a first communication female terminal 160 made of metal into which the first communication male terminal 72 of the power storage device 22 is inserted. The first communication female terminal 160 is cylindrical with a bottom, and is connected to one terminal of the measurement-side communication portion 96 via a harness 162.

[0095] The connecting portion 84 is provided with a second communication female terminal 164 made of metal into which the second communication male terminal 74 of the power storage device 22 is inserted. The second communication female terminal 164 is cylindrical with a bottom, and is connected to the other terminal of the measurement-side communication portion 96 via a harness 166.

[0096] As a result, with the first communication male terminal 72 inserted into the first communication female terminal 160 and the second communication male terminal 74 inserted into the second communication female terminal 164, the measurement side communication unit 96 and the storage side communication unit 70 are connected so as to be able to communicate.

[0097] In the first embodiment, the supply unit 94 and measurement-side communication unit 96 constituting the transmission unit 92 in the measurement device 24 operate on power supplied from a power supply unit not shown. Also, the voltage measurement unit 100, current measurement unit 102, and signal generation unit 104 of the measurement unit 90 in the measurement device 24 operate on power supplied from a power supply unit not shown. The power supply unit rectifies power obtained from, for example, a commercial power outlet and supplies the power.

[0098] (Action and effect) Next, the effects of the first embodiment will be described.

[0099] The measurement system 10 in the first embodiment is a measurement system 10 including an electricity storage device 22 incorporating an electricity storage device 20, and a measuring device 24 that measures the state of the electricity storage device 20 incorporated in the electricity storage device 22. The electricity storage device 22 includes connected parts 40, 44 that exchange electricity with the outside, and an interrupting part 48 that switches the connected parts 40, 44 and the electricity storage device 20 between a non-energized state and an energized state. The electricity storage device 22 includes a transmitted part 60 that controls the interrupting part 48 to switch to an energized state when a signal for switching the energized state to the interrupting part 48 is transmitted. The measuring device 24 is connected to the connected parts 40, 44, and includes a measuring part 90 that measures the state of the electricity storage device 20, and a transmitting part 92 that transmits a signal to the transmitted part 60.

[0100] The power storage device 22 is a device that incorporates the power storage device 20 and can be connected to a measuring device 24 that measures the state of the power storage device 20. The power storage device 22 includes connected parts 40, 44 that exchange electricity with the outside, and an interrupting part 48 that puts the connected parts 40, 44 and the power storage device 20 into a non-energized state or an energized state. The power storage device 22 includes a transmitted part 60 that controls the interrupting part 48 to put the power storage device 20 into an energized state when a signal for putting the power storage device 20 into an energized state is transmitted from the measuring device 24.

[0101] The measuring device 24 is connected to the power storage device 22, which has the power storage device 20 built in and which includes an interrupting unit 48 that switches the power storage device 20 and each connected portion 40, 44 between a non-energized state and an energized state, and a transmitted portion 60 that receives a signal from the outside and controls the interrupting unit 48 to switch to an energized state, and measures the state of the power storage device 20. The measuring device 24 is connected to each connected portion 40, 44 and includes a measuring unit 90 that measures the state of the power storage device 20, and a transmitting unit 92 that transmits a signal to the transmitted portion 60.

[0102] In this configuration, when the connection part 84 of the measuring device 24 is attached to the charging port 14 and a signal is transmitted from the transmitting part 92 of the measuring device 24 to the transmitted part 60 of the storage device 22, the transmitted part 60 controls the interrupting part 48 to establish a current-carrying state.

[0103] Then, in the power storage device 22, the receptacle parts 40, 44 and the power storage device 20 are electrically connected, and the measuring unit 90 of the measuring device 24 is connected to the power storage device 20 via the receptacle parts 40, 44.

[0104] This enables the measuring unit 90 to measure the state of the electricity storage device 20.

[0105] Therefore, even in the case of an energy storage device 22 in which an interruption section 48 that creates a non-current-carrying state is provided between the negative electrode connection section 44 and the energy storage device 20 so as to prevent power from being inadvertently output from each connection section 40, 44, it is possible to measure the state of the energy storage device 20.

[0106] In addition, in the first embodiment, the transmitting unit 92 includes a supplying unit 94 that supplies a signal for controlling the interrupting unit 48, and the transmitted unit 60 includes a receiving unit 62 that receives the signal and controls the interrupting unit 48.

[0107] In the power storage device 22, the transmitted unit 60 includes a receiving unit 62 that receives the signal transmitted from the measuring device 24 and controls the interrupter 48.

[0108] According to this configuration, even if the storage device 22 cannot secure a power source or the like for operating the interrupter 48, it is possible to operate the interrupter 48 using the signal supplied by the supply unit 94.

[0109] In addition, in the first embodiment, the transmitting unit 92 includes a measurement side communication unit 96 that outputs a signal to control the interrupting unit 48 to form a power-on state, and the transmitted unit 60 includes a storage side communication unit 70 that communicates with the measurement side communication unit 96 to input the signal and controls the interrupting unit 48 in accordance with the signal.

[0110] According to this configuration, it is possible to control the state of the interrupter 48 of the power storage device 22 from the measuring device 24. This makes it possible to control the state of conduction between the measuring device 24 and the power storage device 20 of the power storage device 22 according to the measurement timing.

[0111] Moreover, in the first embodiment, the measuring unit 90 has a voltage measuring unit 100 that measures the voltage of the power storage device 20, and a current measuring unit 102 that measures the current flowing through the power storage device 20. The connection position where the voltage measuring unit 100 is electrically connected to each of the connected parts 40, 44 and the connection position where the current measuring unit 102 is electrically connected to each of the connected parts 40, 44 are located at different positions.

[0112] In the measuring device 24, the transmitting unit 92 includes a supplying unit 94 that supplies a signal for controlling the interrupting unit 48. The measuring unit 90 has a voltage measuring unit 100 that measures the voltage of the power storage device 20, and a current measuring unit 102 that measures the current flowing through the power storage device 20. A first connection position where the voltage measuring unit 100 is electrically connected to each of the connected parts 40, 44 and a second connection position where the current measuring unit 102 is electrically connected to each of the connected parts 40, 44 are disposed at different locations.

[0113] According to this configuration, the connection positions where the voltage measuring unit 100 is connected to each of the receptacle parts 40, 44 are separated from the connection positions where the current measuring unit 102 is connected to each of the receptacle parts 40, 44. Therefore, the voltage drop caused by the voltage measuring unit 100 and the voltage drop caused by the current measuring unit 102 can be generated at separate locations.

[0114] Therefore, the influence on the measurement results of the voltage measurement unit 100 and the current measurement unit 102 can be reduced compared to when the voltage drops occurring across the shunt resistors arranged in the voltage measurement unit 100 and the current measurement unit 102 occur at the same position.

[0115] Furthermore, compared to when the connection position where the voltage measuring unit 100 is connected to each of the connected parts 40, 44 is the same as the connection position where the current measuring unit 102 is connected to each of the connected parts 40, 44, it is possible to suppress the mutual influence that may occur between the current measuring unit 102 and the voltage measuring unit 100.

[0116] Furthermore, in the first embodiment, the current path connecting the power storage device 20 and the measuring unit 90 has the following positional relationship: the connection position where the current measuring unit 102 is electrically connected to each of the connected parts 40, 44 is closer to the power storage device 20 than the connection position where the current measuring unit 102 is electrically connected to each of the connected parts 40, 44.

[0117] According to this configuration, it is possible to suppress the influence of the current flowing through the current measuring unit 102 on the voltage measured by the voltage measuring unit 100.

[0118] In the first embodiment, the voltage measuring unit 100 is electrically connected to each of the connected parts 40, 44 via the voltage detecting units 114, 130 that contact the respective connected parts 40, 44. The current measuring unit 102 is electrically connected to each of the connected parts 40, 44 via the current detecting units 120, 140 that contact the respective connected parts 40, 44.

[0119] According to this configuration, the connection position of the voltage measuring unit 100 to each of the connected parts 40, 44 and the connection position of the current measuring unit 102 to each of the connected parts 40, 44 can be adjusted by arranging each of the voltage detecting units 114, 130 and each of the current detecting units 120, 140.

[0120] The aforementioned effect of suppressing voltage drop can be adjusted by adjusting the connection positions of the voltage measuring unit 100 to the respective connected parts 40, 44 and the connection positions of the current measuring unit 102 to the respective connected parts 40, 44. Furthermore, the effect of suppressing the influence that may occur between the current measuring unit 102 and the voltage measuring unit 100 can be adjusted.

[0121] <First Modification of First Embodiment> FIG. 3 is an explanatory diagram showing a measurement system 1000 according to a first modified example of the first embodiment.

[0122] A measurement system 1000 according to a first modification of the first embodiment differs from the first embodiment in that a measurement device 1014 operates using power supplied from a power storage device 1012. In the measurement system 1000, parts that are the same as or equivalent to those in the first embodiment are designated by the same reference numerals and will not be described again, and only the different parts will be described.

[0123] The power storage device 1012 includes a power supply unit 1020 in addition to the configuration of the power storage device 22 (see FIG. 2). The power supply unit 1020 is configured as a device different from the power storage device 20. The power supply unit 1020 is configured, for example, as a 12V in-vehicle battery mounted on the vehicle 12. Note that the power supply unit 1020 may be configured as a step-down circuit that steps down the output of the power storage device 20 and supplies power.

[0124] A positive electrode supply wiring 1022 of the power supply unit 1020 connected to the positive electrode of the in-vehicle battery is connected to a positive electrode supply receptacle 1024. The positive electrode supply receptacle 1024 protrudes from the exterior casing 30. A negative electrode supply wiring 1026 of the power supply unit 1020 connected to the negative electrode of the in-vehicle battery is connected to a negative electrode supply receptacle 1028. The negative electrode supply receptacle 1028 protrudes from the exterior casing 30.

[0125] The exterior 30 of the power storage device 1012 includes the receptacle portions 40, 44, the male terminals 64, 66, 72, 74, and the supply receptacle portions 1024, 1028 to form a receptacle terminal portion 1030. The receptacle terminal portion 1030 is provided in a charging port 14 (see FIG. 1) provided in the vehicle 12.

[0126] The connection part 84 is provided with a metallic positive electrode supply female terminal 1040 into which the positive electrode supply receptacle 1024 of the power storage device 1012 is inserted, and a metallic negative electrode supply female terminal 1042 into which the negative electrode supply receptacle 1028 is inserted. A positive electrode supply line 1044 is connected to the positive electrode supply female terminal 1040, and a negative electrode supply line 1046 is connected to the negative electrode supply female terminal 1042. The supply lines 1044, 1046 are connected to the transmission part 92 and the measurement part 90 of the measurement device 1014.

[0127] As a result, the supply unit 94 and measurement-side communication unit 96 of the transmission unit 92 operate using power supplied from the power supply unit 1020 of the power storage device 1012. In addition, the voltage measurement unit 100, current measurement unit 102, and signal generation unit 104 of the measurement unit 90 operate using power supplied from the power supply unit 1020 of the power storage device 1012.

[0128] The supply of power from the power storage device 1012 to the measuring device 1014 is performed via a connected terminal portion 1030 of the power storage device 1012 provided in the charging port 14 of the vehicle 12 (see FIG. 1).

[0129] In the first modified example of the first embodiment, the case where the measuring device 1014 receives power from the charging port 14 provided on the vehicle 12 has been described, but the first modified example of the first embodiment is not limited to this. For example, the measuring device 1014 may receive power from an inspection terminal for supplying an inspection power source provided on the vehicle 12.

[0130] (Action and effect) In the first modified example of the first embodiment, the same or equivalent parts as those in the first embodiment can also achieve the same effects as those in the first embodiment.

[0131] In the measurement system 1000 according to the first modification of the first embodiment, the measurement device 1014 operates using power supplied from the power storage device 1012 .

[0132] In this configuration, the measuring device 1014 can perform measurements without connecting the measuring device 1014 to a commercial power source or installing a battery for power supply in the measuring device 1014.

[0133] In the measurement system 1000 according to the first modification of the first embodiment, power is supplied from the power storage device 1012 to the measurement device 1014 via a connected terminal portion 1030 provided in the power storage device 1012 .

[0134] In this configuration, compared to when the measuring device 1014 obtains power from the ACC power supply (accessory power supply) of the vehicle 12, it is possible to receive power supply without operating the ignition knob of the vehicle 12.

[0135] In the measurement system 1000 according to the first modification of the first embodiment, the connected terminal portion 1030 is provided in the charging port 14 provided in the vehicle 12.

[0136] In this configuration, simply connecting the measuring device 1014 to the power storage device 1012 via the connection terminal portion 1030 provided in the charging port 14 enables power supply to the measuring device 1014 and measurement by the measurement unit 90. This allows the measuring system 1000 to connect the measuring device 1014 and the power storage device 1012 in only one place, improving convenience.

[0137] <Second Modification of First Embodiment> FIG. 4 is an explanatory diagram showing a measurement system 1100 according to a second modified example of the first embodiment.

[0138] A measurement system 1100 according to the second modified example of the first embodiment is different from the first modified example of the first embodiment in that a connection unit 84 that connects a measurement device 1014 and a power storage device 1012 is different. In the measurement system 1100, parts that are the same as or equivalent to those in the first modified example of the first embodiment are denoted by the same reference numerals and description thereof will be omitted, and only different parts will be described.

[0139] The measuring device 1014 is connected to the connection unit 84 via a cable 82. The measuring device 1014 is also connected to a sub-connection unit 84-1 via a sub-cable 82-1.

[0140] The sub-connection portion 84-1 is provided with the above-mentioned positive electrode supply female terminal 1040 and negative electrode supply female terminal 1042. The sub-cable 82-1 is composed of a positive electrode supply line 1044 connected to the positive electrode supply female terminal 1040 and a negative electrode supply line 1046 connected to the negative electrode supply female terminal 1042.

[0141] (Action and effect) In the second modified example of the first embodiment, the same or equivalent parts as those in the first modified example of the first embodiment can also achieve the same effects as those in the first modified example of the first embodiment.

[0142] Furthermore, in the measurement system 1100 according to the second modification of the first embodiment, the sub-connection unit 84-1 for receiving power supply to the measurement device 1014 is provided independently of the connection unit 84. Therefore, the measurement system 1100 can supply power to the measurement device 1014 even if the connection destination of the sub-connection unit 84-1 and the connection destination of the connection unit 84 are separated from each other.

[0143] Second Embodiment FIG. 5 is an explanatory diagram showing a measurement system 200 according to the second embodiment.

[0144] The measurement system 200 according to the second embodiment differs from the first embodiment in the transmitting unit 92 of the measurement device 24 and the transmitted unit 60 of the power storage device 22. In the measurement system 200 according to the second embodiment, parts that are the same as or equivalent to those in the first embodiment are given the same reference numerals and will not be described again, and only the different parts will be described.

[0145] That is, the transmitting unit 92 of the measuring device 24 does not include the measurement-side communication unit 96 of the first embodiment, and is composed only of a supplying unit 94. Furthermore, the transmitted-from unit 60 of the power storage device 22 does not include the power storage-side communication unit 70 of the first embodiment, and is composed only of a receiving unit 62.

[0146] When the connection part 84 of the measuring device 24 is connected to the power storage device 22, the voltage signal output from the supply part 94 is supplied to the power receiving part 62 of the power storage device 22. Then, the power receiving part 62 supplies the voltage signal supplied from the measuring device 24 to the interrupter 48 to turn on the switch circuit 50 of the interrupter 48. As a result, the negative electrode connected part 44 and the negative electrode of the power storage device 20 are electrically connected to each other.

[0147] On the other hand, when the connection part 84 of the measuring device 24 is detached from the power storage device 22, the voltage signal supplied to the power receiving part 62 of the power storage device 22 is interrupted. Then, the voltage signal supplied to the interrupter 48 is also interrupted, and the switch circuit 50 is turned off. As a result, the negative electrode connected part 44 and the positive electrode of the power storage device 20 are brought into a non-conductive state.

[0148] (Action and effect) Next, the effects of the second embodiment will be described.

[0149] In the second embodiment, the same or equivalent parts as those in the first embodiment can also achieve the same effects as those in the first embodiment.

[0150] In the measurement system 200 according to the second embodiment, the transmitted portion 60 includes a receiving portion 62 that receives a signal and controls the interrupting portion 48 .

[0151] According to this configuration, even if the storage device 22 cannot secure a power source or the like for operating the interrupter 48, it is possible to operate the interrupter 48 using the signal supplied by the supply unit 94.

[0152] Furthermore, since the interrupter 48 is controlled by a signal from the supply unit 94, the interrupter 48 can be operated without sending a command or the like from the measuring device 24 to the power storage device 22. This eliminates the need for a communication unit for sending commands, thereby simplifying the configuration.

[0153] Third Embodiment FIG. 6 is an explanatory diagram showing a measurement system 300 according to the third embodiment.

[0154] The measurement system 300 according to the third embodiment differs from the first embodiment in the transmitting unit 92 of the measurement device 24 and the transmitted unit 60 of the power storage device 22. In the measurement system 300 according to the third embodiment, parts that are the same as or equivalent to those in the first embodiment are given the same reference numerals and descriptions thereof will be omitted, and only the different parts will be described.

[0155] That is, the transmitting unit 92 of the measuring device 24 does not include the supplying unit 94 of the first embodiment, and is composed only of a measuring-side communication unit 96. Also, the transmitted-by unit 60 of the power storage device 22 does not include the receiving unit 62 of the first embodiment, and is composed only of a power storage-side communication unit 70.

[0156] When a power supply command, which is a signal for controlling the interrupter 48 to form a power supply state, is sent from the measurement side communication unit 96 of the measuring device 24 to the storage side communication unit 70 of the power storage device 22, the storage side communication unit 70 controls the interrupter 48 to form a power supply state.

[0157] At this time, the power for controlling the interrupter 48 is obtained from the power storage device 20 of the power storage device 22 or from an on-board battery that operates the electrical components of the vehicle 12.

[0158] On the other hand, when a non-energizing command, which is a signal for controlling the interrupter 48 to form a non-energizing state, is sent from the measurement side communication unit 96 of the measuring device 24 to the storage side communication unit 70 of the storage device 22, the storage side communication unit 70 controls the interrupter 48 to form a non-energizing state.

[0159] (Action and effect) Next, the effects of the third embodiment will be described.

[0160] In the third embodiment, the same or equivalent parts as those in the first embodiment can also achieve the same effects as those in the first embodiment.

[0161] Furthermore, in the measurement system 300 of the third embodiment, the transmitting unit 92 includes a measurement-side communication unit 96 that outputs a signal for controlling the interrupting unit 48 to establish a conducting state. The transmitted-by unit 60 includes a power-storage-side communication unit 70 that communicates with the measurement-side communication unit 96 to receive the signal and controls the interrupting unit 48 in accordance with the signal.

[0162] According to this configuration, it is possible to control the state of the interrupter 48 of the power storage device 22 from the measuring device 24. This makes it possible to control the state of conduction between the measuring device 24 and the power storage device 20 of the power storage device 22 according to the measurement timing.

[0163] Furthermore, compared to a case where the measuring device 24 includes the supply unit 94 and the power storage device 22 includes the receiving unit 62, the configuration can be simplified.

[0164] <Fourth embodiment> FIG. 7 is an explanatory diagram showing a measurement system 400 according to the fourth embodiment.

[0165] Compared to the first embodiment, the measurement system 400 according to the fourth embodiment has a different connection structure between the connection portion 84 of the measurement device 24 and the respective connected portions 402, 404 of the power storage device 22. In the measurement system 400 according to the fourth embodiment, parts that are the same as or equivalent to those in the first embodiment are given the same reference numerals and will not be described again, and only the different parts will be described.

[0166] That is, the positive electrode connected portion 402 and the negative electrode connected portion 404 of the power storage device 22 are formed in a cylindrical shape with a bottom.

[0167] The connection portion 84 of the measuring device 24 includes a positive electrode terminal portion 410 that is inserted into the positive electrode connected portion 402 of the power storage device 22, and a negative electrode terminal portion 412 that is inserted into the negative electrode connected portion 404 of the power storage device 22. The positive electrode terminal portion 410 and the negative electrode terminal portion 412 are formed into cylindrical bodies. The positive electrode terminal portion 410 and the negative electrode terminal portion 412 protrude from the connection portion 84.

[0168] The positive electrode current detection unit 420, which is connected to the current measurement unit 102 of the measurement device 24 via the positive electrode current line 122, has a tapered pin shape. The tip of the positive electrode current detection unit 420 contacts the end face of the positive electrode terminal unit 410, which is formed in a cylindrical shape, for example.

[0169] The negative electrode current detection unit 422, which is connected to the current measurement unit 102 of the measurement device 24 via the negative electrode current line 142, has a tapered pin shape. The tip of the negative electrode current detection unit 422 contacts the end face of the negative electrode terminal unit 412, which is formed in a cylindrical shape, for example.

[0170] The positive electrode voltage detection unit 424 is connected to the voltage measurement unit 100 of the measurement device 24 via the positive electrode voltage line 116 and has a tapered pin shape. The tip of the positive electrode voltage detection unit 424 contacts the end face of the positive electrode terminal unit 410.

[0171] The negative electrode voltage detection unit 426, which is connected to the voltage measurement unit 100 of the measurement device 24 via the negative electrode voltage line 132, has a tapered pin shape. The tip of the negative electrode voltage detection unit 426 contacts the end face of the negative electrode terminal unit 412.

[0172] The connection position where the positive electrode voltage detection unit 424 is electrically connected to the positive electrode terminal unit 410 and the connection position where the positive electrode current detection unit 420 is electrically connected to the positive electrode terminal unit 410 are arranged in different locations.

[0173] The connection position where the negative electrode voltage detection unit 426 is electrically connected to the negative electrode terminal unit 412 and the connection position where the negative electrode current detection unit 422 is electrically connected to the negative electrode terminal unit 412 are arranged at different locations.

[0174] As a method for connecting the detection units 420, 424, 422, 426 to the terminal units 410, 412, there is a method in which the detection units 420, 424, 422, 426 are biased by a spring to connect them to the terminal units 410, 412. There is also a method in which the detection units 420, 424, 422, 426 are connected to the terminal units 410, 412 by soldering or welding.

[0175] The power receiving portion 62 of the power storage device 22 has a first metal receiving female terminal 430 and a second metal receiving female terminal 432. Each of the receiving female terminals 430, 432 is formed in a cylindrical shape with a bottom.

[0176] The connection portion 84 of the measuring device 24 includes a first receiving male terminal portion 440 connected to the supply portion 94 via a harness 152, and a second receiving male terminal portion 442 connected to the supply portion 94 via a harness 156.

[0177] The first male receiving terminal portion 440 is formed as a cylindrical body protruding from the connecting portion 84. The first male receiving terminal portion 440 can be inserted into the first female receiving terminal 430.

[0178] The second receiving male terminal portion 442 is formed as a cylindrical body protruding from the connecting portion 84. The second receiving male terminal portion 442 can be inserted into the second receiving female terminal 432.

[0179] Furthermore, the power storage side communication section 70 of the power storage device 22 has a first metal communication female terminal 450 and a second metal communication female terminal 452. Each of the communication female terminals 450, 452 is formed in a cylindrical shape with a bottom.

[0180] The connection portion 84 of the measuring device 24 is provided with a first communication male terminal portion 460 connected to the measurement side communication portion 96 via a harness 162, and a second communication male terminal portion 462 connected to the measurement side communication portion 96 via a harness 166.

[0181] The first communication male terminal portion 460 is formed in a cylindrical body protruding from the connecting portion 84. The first communication male terminal portion 460 can be inserted into the first communication female terminal 450.

[0182] The second communication male terminal portion 462 is formed in a cylindrical shape protruding from the connecting portion 84. The second communication male terminal portion 462 can be inserted into the second communication female terminal 452.

[0183] (Action and effect) Next, the effects of the fourth embodiment will be described.

[0184] In the fourth embodiment, the same or equivalent parts as those in the first embodiment can also achieve the same effects as those in the first embodiment.

[0185] In the fourth embodiment, the voltage measuring unit 100 is electrically connected to the connected parts 402, 404 via the voltage detecting parts 424, 426 that contact the terminal parts 410, 412. The current measuring unit 102 is electrically connected to the connected parts 402, 404 via the current detecting parts 420, 422 that contact the terminal parts 410, 412.

[0186] Specifically, in the fourth embodiment, the measuring device 24 has terminal portions 410, 412 connected to the respective receptacle portions 402, 404. The measuring portion 90 has a voltage measuring portion 100 that measures the voltage of the power storage device 20 and a current measuring portion 102 that measures the current flowing through the power storage device 20. The voltage measuring portion 100 is electrically connected to the receptacle portions 402, 404 via the respective terminal portions 410, 412, and the current measuring portion 102 is electrically connected to the receptacle portions 402, 404 via the respective terminal portions 410, 412. The connection positions where the voltage measuring portion 100 is electrically connected to the respective terminal portions 410, 412 and the connection positions where the current measuring portion 102 is electrically connected to the respective terminal portions 410, 412 are disposed at different positions.

[0187] According to this configuration, the voltage measuring unit 100 of the measuring device 24 is electrically connected to the respective connected parts 402, 404 of the power storage device 22 via the respective voltage detecting units 424, 426 that are in contact with the respective terminal parts 410, 412. Furthermore, the current measuring unit 102 is electrically connected to the respective connected parts 402, 404 of the power storage device 22 via the respective current detecting units 420, 422 that are in contact with the respective terminal parts 410, 412.

[0188] Therefore, when the connected portions 402, 404 of the power storage device 22 are concave, the terminal portions 410, 412 are made to protrude from the connecting portion 84, thereby making it possible to measure the power storage device 22.

[0189] In addition, the connection position where the voltage measuring unit 100 is electrically connected to each of the connected parts 402, 404 and the connection position where the current measuring unit 102 is electrically connected to each of the connected parts 402, 404 can be adjusted by the contact position with each of the terminal parts 410, 412.

[0190] Fifth Embodiment Fig. 8 is an explanatory diagram showing a terminal 500 used in a measurement system according to a fifth embodiment. Fig. 8 shows a state 510 in which the terminal 500 is viewed from the side, and a state 512 in which the terminal 500 is viewed from the tip side.

[0191] The terminals 500 constitute the positive electrode terminal portion 410 and the negative electrode terminal portion 412 of the fourth embodiment.

[0192] A terminal 500 of the measurement system according to the fifth embodiment has a different cross-sectional structure compared to the positive electrode terminal portion 410 and the negative electrode terminal portion 412 of the fourth embodiment. Regarding the terminal 500 of the measurement system according to the fifth embodiment, the same or equivalent parts as those of the fourth embodiment are denoted by the same reference numerals and description thereof will be omitted, and only the different parts will be described.

[0193] A plate-shaped member 520 extending in the longitudinal direction is provided in the center of this terminal 500. A voltage conducting portion 522 is provided on one side of the plate-shaped member 520. A current conducting portion 524 is provided on the other side of the plate-shaped member 520.

[0194] The outer surface of each of the conductive portions 522, 524 is configured as a curved surface, and the terminal 500 configured with the plate-like member 520 and each of the conductive portions 522, 524 is formed in a cylindrical shape.

[0195] The plate-like member 520 is made of an insulator, and the conductive portions 522, 524 are made of a conductor. When the terminal 500 is inserted into the positive electrode connection portion 402 or the negative electrode connection portion 404, the conductive portions 522, 524 are located at separate positions on the inner circumferential surface of the positive electrode connection portion 402 or the negative electrode connection portion 404, respectively.

[0196] The positive electrode voltage detector 424 or the negative electrode voltage detector 426 is connected to an end face of the voltage conducting portion 522. The positive electrode current detector 420 or the negative electrode current detector 422 is connected to an end face of the current conducting portion 524.

[0197] (Action and effect) Next, the effects of the fifth embodiment will be described.

[0198] In the fifth embodiment, the same or equivalent parts as those in the fourth embodiment can also achieve the same effects as those in the fourth embodiment.

[0199] Sixth Embodiment Fig. 9 is an explanatory diagram showing a terminal 600 used in a measurement system according to the sixth embodiment, showing a state 610 of the terminal 600 as seen from the base end, a state 612 as seen from the side, and a state 614 as seen from the tip end.

[0200] The terminals 600 constitute the positive electrode terminal portion 410 and the negative electrode terminal portion 412 of the fourth embodiment.

[0201] A terminal 600 of the measurement system according to the sixth embodiment has a different structure compared to the positive electrode terminal portion 410 and the negative electrode terminal portion 412 of the fourth embodiment. Regarding the terminal 600 of the measurement system according to the sixth embodiment, the same or equivalent parts as those of the fourth embodiment are denoted by the same reference numerals and description thereof will be omitted, and only the different parts will be described.

[0202] A cylindrical voltage detection conducting part 620 is provided in the center of this terminal 600. A voltage conducting part 622 is formed at the tip of the voltage detection conducting part 620. The voltage detection conducting part 620 and the voltage conducting part 622 are electrically connected.

[0203] A cylindrical tube portion 624 is provided on the outer periphery of the voltage detection conducting portion 620 .

[0204] A cylindrical current conducting portion 626 is provided on the outer periphery of the tube portion 624. The length of the current conducting portion 626 in the longitudinal direction of the terminal 600 is set to be approximately the same as the length of the voltage conducting portion 622.

[0205] An insulating portion 628 is provided between the current conducting portion 626 and the voltage detection conducting portion 620 and voltage conducting portion 622. The insulating portion 628 is formed integrally with the cylindrical portion 624.

[0206] The voltage detection conducting portion 620, the voltage conducting portion 622, and the current conducting portion 626 are made of conductors. The cylindrical portion 624 and the insulating portion 628 are made of insulators.

[0207] When the terminal 600 is inserted into the positive electrode connection portion 402 or the negative electrode connection portion 404, the voltage connection portion 622 and the current connection portion 626 come into contact with the inner circumferential surface of the positive electrode connection portion 402 or the negative electrode connection portion 404.

[0208] The positive electrode voltage detection unit 424 or the negative electrode voltage detection unit 426 is connected to an end face of the voltage detection conducting unit 620. The positive electrode current detection unit 420 or the negative electrode current detection unit 422 is connected to an end face of the current conducting unit 626.

[0209] (Action and effect) Next, the effects of the sixth embodiment will be described.

[0210] In the sixth embodiment, the same or equivalent parts as those in the fourth embodiment can also achieve the same effects as those in the fourth embodiment.

[0211] In addition, in the sixth embodiment, the connection position where the voltage conducting portion 622 electrically connected to the voltage detection conducting portion 620 is connected to the positive electrode connecting portion 402 or the negative electrode connecting portion 404 is closer to the electricity storage device 20 than the connection position where the current conducting portion 626 is connected to the positive electrode connecting portion 402 or the negative electrode connecting portion 404.

[0212] Therefore, it is possible to suppress the influence of the current flowing through the current measuring unit 102 on the voltage measured by the voltage measuring unit 100.

[0213] Seventh Embodiment Fig. 10 is an explanatory diagram showing a terminal 700 used in a measurement system according to the seventh embodiment, showing a state 710 of the terminal 700 as seen from the base end, a state 712 as seen from the side, and a state 714 as seen from the tip end.

[0214] The terminals 700 constitute the positive electrode terminal portion 410 and the negative electrode terminal portion 412 of the fourth embodiment.

[0215] A terminal 700 of the measurement system according to the seventh embodiment differs from the terminal 600 of the sixth embodiment in a voltage conducting portion 622 and a current conducting portion 626. For the terminal 700 of the measurement system according to the seventh embodiment, parts that are the same as or equivalent to those of the sixth embodiment will be given the same reference numerals and explanations will be omitted, and only the different parts will be explained.

[0216] In this terminal 700, the length of the current conducting portion 626 in the longitudinal direction of the terminal 700 is longer than the length of the voltage conducting portion 622 electrically connected to the voltage detection conducting portion 620.

[0217] (Action and effect) Next, the effects of the seventh embodiment will be described.

[0218] In the seventh embodiment, the same or equivalent parts as those in the sixth embodiment can also achieve the same effects as those in the sixth embodiment.

[0219] In the seventh embodiment, the length of the current conducting portion 626 is longer than the length of the voltage conducting portion 622 electrically connected to the voltage detection conducting portion 620 .

[0220] Therefore, the area where the current conducting portion 626 comes into contact with the positive electrode connecting portion 402 or the negative electrode connecting portion 404 is larger than the contact area where the voltage conducting portion 622 of the voltage detection conducting portion 620 comes into contact with the positive electrode connecting portion 402 or the negative electrode connecting portion 404.

[0221] Therefore, the current flowing through the current conducting portion 626 can be increased.

[0222] Eighth Embodiment Fig. 11 is an explanatory diagram showing a terminal 800 used in a measurement system according to the eighth embodiment. Fig. 11 shows a state 810 of the terminal 800 as seen from the base end side, a state 812 as seen from a cross section, and a state 814 as seen from the tip side.

[0223] The terminals 800 constitute the positive electrode terminal portion 410 and the negative electrode terminal portion 412 of the fourth embodiment.

[0224] A terminal 800 of the measurement system according to the eighth embodiment has a different structure compared to the positive electrode terminal portion 410 and the negative electrode terminal portion 412 of the fourth embodiment. Regarding the terminal 800 of the measurement system according to the eighth embodiment, the same or equivalent parts as those of the fourth embodiment are denoted by the same reference numerals and description thereof will be omitted, and only the different parts will be described.

[0225] A cylindrical voltage detection conducting part 820 is provided in the center of this terminal 800. A cylindrical insulating part 822 is provided on the outer periphery of voltage detection conducting part 820. A cylindrical current measurement conducting part 824 is provided on the outer periphery of insulating part 822.

[0226] The voltage detection conducting part 820 and the insulating part 822 are shorter in length in the longitudinal direction of the terminal 800 than the current measurement conducting part 824. As a result, a recess 830 is formed at the tip of the terminal 800.

[0227] A contact pin 832 is disposed in the recess 830. The contact pin 832 is supported at the tip of the voltage detection conductive part 820 via, for example, a coil spring 834. This allows the contact pin 832 to protrude from the terminal 800 toward the tip side and retract into the recess 830.

[0228] The voltage detection conductive part 820, the coil spring 834, the contact pin 832, and the current measurement conductive part 824 are made of conductors. The insulating part 822 is made of an insulator.

[0229] The contact pin 832 and the current measurement conducting part 824 come into contact with the positive electrode connected part 402 or the negative electrode connected part 404 when the terminal 800 is inserted into the positive electrode connected part 402 or the negative electrode connected part 404 .

[0230] The positive electrode voltage detection unit 424 or the negative electrode voltage detection unit 426 is connected to an end face of the voltage detection conducting unit 820. The positive electrode current detection unit 420 or the negative electrode current detection unit 422 is connected to an end face of the current conducting unit 724.

[0231] (Action and effect) Next, the effects of the eighth embodiment will be described.

[0232] In the eighth embodiment, the same or equivalent parts as those in the fourth embodiment can also achieve the same effects as those in the fourth embodiment.

[0233] In addition, in the eighth embodiment, the connection position where the contact pin 832 is connected to the positive electrode connection portion 402 or the negative electrode connection portion 404 is closer to the energy storage device 20 than the connection position where the current measurement conductive portion 824 is connected to the positive electrode connection portion 402 or the negative electrode connection portion 404.

[0234] Therefore, it is possible to suppress the influence of the current flowing through the current measuring unit 102 on the voltage measured by the voltage measuring unit 100.

[0235] Ninth Embodiment FIG. 12 is an explanatory diagram showing a measurement system 900 according to the ninth embodiment.

[0236] The measurement system 900 according to the ninth embodiment differs from the fourth embodiment in the connection positions of the voltage detection units 424, 426 and the current detection units 420, 422. In the measurement system 900 according to the ninth embodiment, parts that are the same as or equivalent to those in the fourth embodiment are given the same reference numerals and will not be described again, and only the different parts will be described.

[0237] That is, the positive electrode connected portion 402 and the negative electrode connected portion 404 of the power storage device 22 are formed in a cylindrical shape with a bottom.

[0238] The connection portion 84 of the measuring device 24 includes a positive electrode terminal portion 410 that is inserted into the positive electrode connected portion 402 of the power storage device 22, and a negative electrode terminal portion 412 that is inserted into the negative electrode connected portion 404 of the power storage device 22. The positive electrode terminal portion 410 and the negative electrode terminal portion 412 are formed into cylindrical bodies. The positive electrode terminal portion 410 and the negative electrode terminal portion 412 protrude from the connection portion 84.

[0239] The tip of the positive electrode current detection unit 420 connected to the current measurement unit 102 of the measurement device 24 contacts the end face of the positive electrode measurement terminal unit 910, which is formed as a cylinder. Also, the tip of the negative electrode current detection unit 422 connected to the current measurement unit 102 contacts the end face of the negative electrode measurement terminal unit 912, which is formed as a cylinder.

[0240] The tip of the positive electrode voltage detection unit 424 connected to the voltage measurement unit 100 of the measurement device 24 contacts the end face of the positive electrode measurement terminal unit 910. The tip of the negative electrode voltage detection unit 426 connected to the voltage measurement unit 100 contacts the end face of the negative electrode measurement terminal unit 912.

[0241] The connection position where the positive electrode voltage detection unit 424 is electrically connected to the positive electrode measurement terminal unit 910 and the connection position where the positive electrode current detection unit 420 is electrically connected to the positive electrode measurement terminal unit 910 are located at different locations.

[0242] The connection position where the negative electrode voltage detection unit 426 is electrically connected to the negative electrode measurement terminal unit 912 and the connection position where the negative electrode current detection unit 422 is electrically connected to the negative electrode measurement terminal unit 912 are located at different locations.

[0243] The positive electrode measuring terminal 910 is connected to the positive electrode terminal 410 via a current line 920 of the cable 82. The negative electrode measuring terminal 912 is connected to the negative electrode terminal 412 via a negative electrode line 922 of the cable 82.

[0244] (Action and effect) Next, the effects of the ninth embodiment will be described.

[0245] In the ninth embodiment, the same or equivalent parts as those in the fourth embodiment can also achieve the same effects as those in the fourth embodiment.

[0246] Furthermore, in the ninth embodiment, it is possible to reduce the number of wires that make up the cable 82 compared to when the cable 82 is provided with the positive voltage line 116, the negative voltage line 132, the positive current line 122, and the negative current line 142.

[0247] Furthermore, in the ninth embodiment, it is possible to place the measuring device 80 inside the rapid charger. In this case, a rapid charging connector and cable provided in the rapid charger are used as the connection portion 84 and cable 82 of the ninth embodiment.

[0248] Although the embodiments of the present invention have been described above, the above embodiments merely illustrate some of the application examples of the present invention, and it is not intended that the technical scope of the present invention be limited to the specific configurations of the above embodiments.

[0249] Furthermore, the inner surfaces of the detection portions 114, 130, 120, and 140 used in the first to third embodiments may be provided with inward protrusions to improve contact between the detection portions 114, 130, 120, and 140 and the corresponding connection portions 40 and 44. [Explanation of symbols]

[0250] 10, 200, 300, 400, 900, 1000, 1100 measurement systems 20 Energy storage devices 22, 1012 Energy storage device 24, 1014 Measuring equipment 40 Positive electrode connection part 44 Negative electrode connection part 48 Intermittent section 60 Transmitted part 62 Receiving Department 70 Storage side communication unit 80 Measuring Instruments 90 Measuring part 92 Transmission Unit 94 Supply section 96 Measurement side communication unit 100 Voltage measurement section 102 Current measurement section 114, 424 Positive voltage detection unit 120, 420 Positive current detection section 130, 426 Negative voltage detection unit 140, 422 Negative current detection unit 402 Positive electrode connection part 404 Negative electrode connection part 500, 600, 700, 800 terminals 1030 Connected terminal section

Claims

1. A measurement system including: a power storage device having a built-in power storage device; and a measurement device that measures a state of the power storage device built into the power storage device, The power storage device is A connected part that exchanges electricity with the outside; an interrupting part that turns the connected part and the power storage device into a non-energized state or an energized state; a transmitted portion that controls the interrupter portion to establish the energized state when a signal for establishing the energized state is transmitted to the interrupter portion; Equipped with The measuring device is a measuring unit connected to the connected portion and measuring a state of the power storage device; a transmitting unit that transmits the signal to the transmitted unit; Equipped with the transmitting unit includes only a supplying unit that supplies the signal for controlling the interrupting unit, and the transmitted unit includes a receiving unit that receives the signal and controls the interrupting unit. Measurement system.

2. 10. The measurement system of claim 1, Even if the power storage device is removed, The power storage device has a portion corresponding to the power receiving unit, and the portion corresponding to the power receiving unit is utilized in a connection structure between the measuring device and the power storage device. Measurement system.

3. 10. The measurement system of claim 1, Even when the power storage device is removed from the vehicle, The power storage device has a portion corresponding to the power receiving unit for connecting to the vehicle, and the portion corresponding to the power receiving unit is used in a connection structure between the measurement device and the power storage device. Measurement system.

4. 10. The measurement system of claim 1, the measurement unit includes a voltage measurement unit that measures a voltage of the power storage device and a current measurement unit that measures a current flowing through the power storage device, a connection position where the voltage measuring unit is electrically connected to the connected part and a connection position where the current measuring unit is electrically connected to the connected part are disposed at different positions; Measurement system.

5. 10. The measurement system of claim 1, the measuring device has a terminal portion connected to the connected portion, the measurement unit includes a voltage measurement unit that measures a voltage of the power storage device and a current measurement unit that measures a current flowing through the power storage device, the voltage measuring unit is electrically connected to the connected part via the terminal unit, the current measuring unit is electrically connected to the connected part via the terminal unit, a connection position where the voltage measuring unit is electrically connected to the terminal unit and a connection position where the current measuring unit is electrically connected to the terminal unit are disposed at different positions; Measurement system.

6. The measurement system according to claim 4 or claim 5, In a current path connecting the power storage device and the measurement unit, a connection position where the voltage measurement unit is electrically connected to the connected part is closer to the power storage device than a connection position where the current measurement unit is electrically connected to the connected part. Measurement system.

7. 5. The measurement system according to claim 4, the voltage measuring unit is electrically connected to the connected part via a voltage detecting unit that is in contact with the connected part, the current measuring unit is electrically connected to the connected part via a current detecting unit that is in contact with the connected part; Measurement system.

8. 6. The measurement system according to claim 5, the voltage measuring unit is electrically connected to the connected part via a voltage detecting unit that contacts the terminal part, the current measuring unit is electrically connected to the connected part via a current detecting unit that is in contact with the terminal part; Measurement system.

9. 10. The measurement system of claim 1, The measuring device operates using power supplied from the power storage device. Measurement system.

10. 10. The measurement system of claim 9, The power storage device supplies power to the measuring device via a connection terminal portion provided on the power storage device. Measurement system.

11. The measurement system according to claim 10, The connection terminal portion is provided in a charging port provided in a vehicle. Measurement system.

12. A measuring device is connected to a power storage device having a built-in power storage device, the measuring device including: an interrupting unit that switches the power storage device and a connected unit between a non-energized state and an energized state; and a transmitted unit that receives a signal from an external device and controls the interrupting unit to switch the power storage device to the energized state, the measuring device measuring a state of the power storage device, a measuring unit connected to the connected portion and measuring a state of the power storage device; a transmitting unit that transmits the signal to the transmitted unit; Equipped with the transmission unit includes only a supply unit that supplies the signal for controlling the intermittent unit; Measuring equipment.

13. The measurement device according to claim 12, the transmitted unit includes a receiving unit that receives the signal and controls the interrupting unit; Even if the power storage device is removed, The power storage device has a portion corresponding to the power receiving portion, and the portion corresponding to the power receiving portion is utilized in a connection structure with the power storage device. Measuring equipment.

14. The measuring device according to claim 12, the transmitted unit includes a receiving unit that receives the signal and controls the interrupting unit; Even when the power storage device is removed from the vehicle, The power storage device has a portion corresponding to the power receiving portion for connection to the vehicle, and the portion corresponding to the power receiving portion is utilized in a connection structure with the power storage device. Measuring equipment.

15. The measurement device according to claim 12, the transmission unit includes a supply unit that supplies the signal for controlling the intermittent unit; the measurement unit includes a voltage measurement unit that measures a voltage of the power storage device and a current measurement unit that measures a current flowing through the power storage device, a first connection position where the voltage measuring unit is electrically connected to the connected part and a second connection position where the current measuring unit is electrically connected to the connected part are disposed at different positions; Measuring equipment.

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