WO2020059602A1

WO2020059602A1 - Electronic device

Info

Publication number: WO2020059602A1
Application number: PCT/JP2019/035737
Authority: WO
Inventors: 憲洋廣田; 貞安石井; 聖也柴田; 剛村中; 真人三浦; 勝徳田
Original assignee: 株式会社ザクティ; 株式会社カーメイト
Priority date: 2018-09-18
Filing date: 2019-09-11
Publication date: 2020-03-26
Also published as: JP2020048287A

Abstract

According to the present invention, in a drive recorder device (1) operated by electric power supplied from a detachable power supply pack (60), the power supply pack (60) includes a capacitor pack (70) containing a capacitor (71). The capacitor pack (70) has: a capacitor-side output terminal (74c) for supplying electric power from the capacitor (71); and a capacitor-side monitoring terminal (74b) provided independently from the capacitor-side output terminal (74c) and configured to detect a power storage condition of the capacitor (71).

Description

Electronics

技術 The technology disclosed herein relates to electronic devices.

It has been known that a detachable power supply pack is used as a power supply for an electronic device beforehand. For example, Patent Literature 1 discloses that a battery pack containing a battery is used as a power pack for a power tool.

Specifically, the battery pack disclosed in Patent Document 1 contains a plurality of dry batteries and a supercapacitor known as an electric double layer capacitor.

JP 2011-258387 A

(4) The inventors of the present application have studied to accommodate a capacitor such as an electric double layer capacitor as disclosed in Patent Document 1, instead of accommodating a battery in a power supply pack. Although this capacitor can store power supplied from the outside, it is conceivable to appropriately determine the storage state of the capacitor in order to use the stored power effectively.

Here, it is conceivable that the determination of the storage state of the capacitor is performed by, for example, a control unit for controlling the electronic device. However, in order to realize such a configuration, it is necessary to electrically connect the power supply pack and the control unit and detect the state of charge of the capacitor.

Generally, the power pack and the control unit are electrically connected via a terminal for supplying electric power, but such a terminal alone is not sufficient to detect the state of power storage.

The technique disclosed herein has been made in view of such a point, and a purpose thereof is to appropriately determine the state of charge of a capacitor.

The present disclosure relates to an electronic device that is operated by power supplied from a detachable power supply pack. The power pack includes a capacitor pack containing a capacitor.

The capacitor pack has an output terminal for supplying power from the capacitor, and a detection terminal provided independently of the output terminal and for detecting a state of storage of electricity in the capacitor. .

According to the above configuration, the capacitor pack has the detection terminal separately from the output terminal. Through this detection terminal, it is possible to connect the capacitor pack to, for example, a control unit in an electronic device. This makes it possible to detect the state of charge of the capacitor and determine this.

The capacitor pack may include a control terminal for controlling the storage of the capacitor.

(4) In order to use a capacitor pack in combination with an external power supply, it is necessary to appropriately control the storage of the capacitor pack. Such control may be performed, for example, by a control unit for controlling the electronic device. To realize such a configuration, it is necessary to electrically connect the power pack and the control unit, but the output terminal and the detection terminal are not sufficient.

On the other hand, according to the above configuration, the capacitor pack has a control terminal in addition to the output terminal and the detection terminal. It is possible to connect the capacitor pack and, for example, a control unit of an electronic device via the detection terminal. This makes it possible to appropriately control the storage of the capacitor pack.

Further, the electronic device includes a housing in which the power pack is mounted, and an input terminal provided in the housing, and the power pack further includes a battery pack containing a battery. The battery pack has a battery-side output terminal for supplying power from the battery, and the input terminal is connected to the output terminal when the capacitor pack is mounted as the power pack. On the other hand, when the battery pack is mounted as the power supply pack, it may be arranged to be connected to the battery-side output terminal.

According to the above configuration, the input terminals can be reused both when the capacitor pack is mounted on the housing and when the battery pack is mounted on the housing. Thus, the configuration inside the housing can be shared between when the capacitor pack is mounted and when the battery pack is mounted, and the number of components can be reduced.

The electronic device further includes a control unit that is electrically connected to the capacitor via the power storage terminal when the capacitor pack is mounted, and the control unit controls the capacitor through the power storage terminal. And detecting the state of charge in the capacitor based on the detection result.

According to the above configuration, it is possible to appropriately determine the storage state of the capacitor.

The capacitor pack may contain an electric double layer capacitor as the capacitor.

Generally, electric double layer capacitors are stored in a shorter time than secondary batteries, so that emergency power can be reliably maintained. In addition, unlike a secondary battery, a chemical reaction does not occur in an electrode of an electric double layer capacitor, so that deterioration of the electrode is suppressed and the life is relatively long.

Therefore, the electric double layer capacitor is suitable for use in a device, such as a drive recorder, which needs to secure emergency power and operates constantly during operation of the vehicle. That is, the above configuration is advantageous if applied to a drive recorder as an electronic device.

As described above, according to the electronic device, it is possible to appropriately determine the storage state of the capacitor.

FIG. 1 is a side view illustrating a drive recorder device in a vehicle-mounted state. FIG. 2 is a perspective view illustrating the drive recorder device as viewed obliquely from behind. FIG. 3 is an explanatory diagram illustrating the replacement of the power pack. FIG. 4A is a block diagram illustrating a schematic configuration of a recorder main body and a capacitor pack. FIG. 4B is a block diagram illustrating a schematic configuration of the recorder main body and the battery pack. FIG. 5 is a side view illustrating a housing. FIG. 6 is a cross-sectional view illustrating the internal configuration of the housing. FIG. 7 is a perspective view illustrating a capacitor pack as a power pack. FIG. 8 is a cross-sectional view illustrating the configuration of the capacitor pack. FIG. 9 is a perspective view illustrating a battery pack as a power supply pack. FIG. 10 is a cross-sectional view showing a state in which a capacitor pack is housed in a power storage unit and a state in which a battery pack is housed in a power storage unit. FIG. 11 is a block diagram showing a specific example of the recorder body and the capacitor pack.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The following description is an example.

FIG. 1 is a side view illustrating the drive recorder device 1 in a vehicle-mounted state. FIG. 2 is a perspective view illustrating the drive recorder device 1 as viewed obliquely from behind. FIG. 3 is an explanatory view exemplifying replacement of the power supply pack 60. 4A is a block diagram illustrating a schematic configuration of the recorder main body 10 and the capacitor pack 70, and FIG. 4B is a block diagram illustrating a schematic configuration of the recorder main body 10 and the battery pack 80.

In the following description, “front” refers to “front” in the vehicle front-rear direction in a vehicle-mounted state. Further, “rear” refers to “rear” in the same direction. Similarly, the “left-right direction” corresponds to the vehicle width direction in a vehicle-mounted state, and one side is referred to as “left”, and the other side is referred to as “right”. The “vertical direction” corresponds to the vehicle height direction in the on-vehicle state, and one side is referred to as “up”, and the other side is referred to as “down”. Also in the non-vehicle state, directions corresponding to these are referred to as “front”, “rear”, “left”, “right”, “up”, and “down”, respectively.

The electronic device illustrated here is the drive recorder device 1 that operates by the power supplied from the detachable power supply pack 60. The drive recorder device 1 is configured to be usable as a drive recorder in a vehicle-mounted state (a state mounted on a vehicle), but is configured to be usable as a portable device in a non-vehicle state (a state not mounted on a vehicle). I have.

For example, in the on-vehicle state, the drive recorder device 1 is fixed to the windshield 101 of the vehicle 100, so that it is disposed on the front side in the vehicle front-rear direction (see FIG. 1). The drive recorder device 1 operates by power supplied from an external power supply 92 via a power cable 91, and functions as a so-called drive recorder (see also FIG. 4A).

In addition, in the on-vehicle state, the drive recorder device 1 accommodates the capacitor pack 70. The capacitor pack 70 is a power pack 60 containing a capacitor 71. Capacitor 71 is used as an emergency power supply when power supply from external power supply 92 is cut off.

The drive recorder device 1 is operable by the power supplied from the capacitor 71 instead of the power supplied from the external power supply 92, so that the drive recorder device 1 can function as a drive recorder even when the power supply is cut off. Can be.

On the other hand, in the non-vehicle state, the drive recorder device 1 is detached from the windshield 101. As shown in FIG. 3, a battery pack 80 is housed in the drive recorder device 1 instead of the capacitor pack 70 described above. The battery pack 80 is a power supply pack 60 containing a battery 81. The drive recorder device 1 operates by the electric power supplied from the battery 81, and functions as a so-called action camera (see FIG. 4B).

Hereinafter, the configuration of the drive recorder device 1 will be described in detail.

<Overall configuration>
First, the overall configuration of the drive recorder device 1 will be described. As shown in FIGS. 1 and 2, the drive recorder device 1 includes a recorder main body 10 provided with

imaging lenses

31 and 32 on both front and rear surfaces.

The drive recorder device 1 further includes a support 20 provided on the upper surface of the recorder main body 10 and a capacitor pack 70 inserted from the right side of the recorder main body 10 when mounted on the vehicle. Here, the support 20 is an arm-shaped member for fixing the recorder main body 10 to the windshield 101, and is configured to be detachable from the recorder main body 10. As shown in FIG. 2, the right end of the capacitor pack 70 protrudes from the right side of the recorder main body 10. A connector 72 that is connected to an external power supply 92 via a power cable 91 is provided on the rear surface of the right end that protrudes.

On the other hand, in the non-vehicle state, the support 20 is detached from the recorder main body 10. As described above, when in the non-vehicle state, the drive recorder device 1 houses the battery pack 80 as the power supply pack 60 instead of the capacitor pack 70. As shown in FIG. 3, the battery pack 80 does not protrude from the right side surface of the recorder main body 10, and the side surface is closed by a separate lid 12.

Next, the configuration of the recorder main body 10 will be described in detail.

<Recorder body>
As shown in FIGS. 4A and 4B, the recorder main body 10 includes an imaging unit 30 that images the front and rear of the vehicle, a control unit 40 that processes an image signal output from the imaging unit 30, a control unit 40, and a power pack 60. And a housing 11 for accommodating the same. Further, the recorder main body 10 is provided with a memory 40a for temporarily storing image signals in frame units and a storage medium 40b for storing the image signals stored in the memory 40a.

-Imaging unit-
Here, the imaging unit 30 includes, in addition to the front and

rear imaging lenses

31 and 32 illustrated in FIG. 1, an aperture (not shown) for adjusting an exposure amount, and an imaging element 33 for photoelectrically converting a subject image into an image signal. have. One image sensor 33 is provided for each of the front imaging lens 31 and the rear imaging lens 32.

(4) The

imaging lenses

31 and 32 condense light from the subject, respectively, and make the light enter the imaging device 33. The recorder main body 10 functions as a spherical camera with the front imaging lens 31 and the rear imaging lens 32.

(4) The image sensor 33 photoelectrically converts an object image into an electric signal (image signal) using a plurality of pixels arranged on the light receiving surface. Specifically, the imaging device 33 may be a solid-state imaging device such as a CCD image sensor and a CMOS image sensor.

－Control part－
On the other hand, the control unit 40 is an ASIC (Application Specific Integrated Circuit) mounted on a resin-made circuit board 41 and is an electronic component configured to perform various processes. .

(4) The control unit 40 is electrically connected to the memory 40a, the storage medium 40b, and the capacitor pack 70 or the battery pack 80 as the power pack 60. When the power supply pack 60 supplies power to the control unit 40, the control unit 40 can execute various processes. By the processing executed in this manner, the drive recorder device 1 functions as a drive recorder or functions as a portable device. That is, in the drive recorder device 1, it is equivalent to the control unit 40 shown in FIGS. 4A and 4B functioning as a drive recorder and a portable device.

-Housing-
FIG. 5 is a side view illustrating the housing 11, and FIG. 6 is a cross-sectional view illustrating the internal configuration of the housing 11. The housing 11 is formed in a box shape that is horizontally long in the left-right direction and has a thickness in the front-rear direction, and

imaging lenses

31 and 32 are provided on the front and rear surfaces thereof, while a support tool is provided on the upper surface thereof. 20 are attached. The housing 11 can be attached to the windshield 101 via the support 20.

筐体 The housing 11 illustrated in FIG. 5 is configured so that the power pack 60 is mounted. Specifically, a circuit board 41 on which the control unit 40 is mounted is housed in the housing 11, and a power supply mounting unit 50 to which the power supply pack 60 is detachable is provided. In the present embodiment, the power supply mounting section 50 is configured as a power storage section that can store the power pack 60.

More specifically, the capacitor pack 70 and the battery pack 80 as the power supply pack 60 both have a rectangular thin plate-like outer shape, as described later. In response to this, the power supply mounting section 50 as the power supply storage section partitions the rectangular thin plate-shaped storage space 51 in the housing 11 so that only one of the capacitor pack 70 and the battery pack 80 can be stored therein. are doing. The accommodation space 51 has a size that can selectively receive the capacitor pack 70 and the battery pack 80, and is defined by a plurality of inner walls provided in the housing 11.

The accommodation space 51 thus partitioned is open to the right side of the housing 11. The opening forms, on the same side, an insertion port 52 for inserting the capacitor pack 70 or the battery pack 80. The capacitor pack 70 or the battery pack 80 can be inserted into the housing 11 through the insertion opening 52 configured as described above.

As shown in FIG. 5, the power supply mounting section 50 as the power supply accommodating section is disposed on the front side in the vehicle front-rear direction in the housing 11 in the vehicle-mounted state. More specifically, the power supply mounting unit 50 is disposed on the front side in the vehicle front-rear direction with respect to the circuit board 41 configuring the control unit 40 in the vehicle-mounted state.

By inserting the capacitor pack 70 or the battery pack 80 as the power pack 60 into the power mounting section 50 thus configured, the power pack 60 and the control section 40 are electrically connected. It has become.

Specifically, as shown in FIG. 6, a plurality of main body terminals 53 are provided on an inner wall part that partitions the left end of the housing space 51 among the inner wall parts that partition the housing space 51. These main body terminals 53 are arranged side by side in the vertical direction, and each protrude rightward. In the present embodiment, a total of five main body terminals 53 are provided.

More specifically, the upper part 51a at the left end described above is depressed leftward as compared with the lower part 51b. A body-side control terminal 53a and a body-side monitoring terminal 53b are provided on the depressed upper portion 51a as body terminals 53 in this order from above. On the other hand, an input terminal 53c, a main body-side multi-function terminal 53d, and a main body-side ground terminal 53e are provided in the lower part 51b in order from the top. Note that, of the five main body terminals 53, terminals other than the main body side ground terminal 53 e are electrically connected to the control unit 40. The input terminal 53c is an example of an “input terminal”.

Here, of the main body terminals 53, the main body side control terminal 53a and the main body side monitoring terminal 53b are dedicated terminals for the capacitor pack 70. On the other hand, among the main body terminals 53, the input terminal 53c, the main body side multifunctional terminal 53d, and the main body side ground terminal 53e are terminals shared by the capacitor pack 70 and the battery pack 80.

That is, the battery pack 80 performs only the function of supplying power from the battery 81 to the control unit 40, whereas the capacitor pack 70 supplies power from the external power supply 92 in normal time and in emergency. Alternatively, it is necessary to select whether to supply power from the capacitor 71. In order to realize the function related to such proper use, the capacitor pack 70 is provided with more terminals than the battery pack 80, and the terminal 53 for the main body connected thereto has a terminal dedicated to the capacitor pack 70. Will be included.

When the capacitor pack 70 or the battery pack 80 is inserted into the power supply mounting portion 50, the main body terminal 53 is electrically connected to the

terminals

74 and 82 provided on the capacitor pack 70 and the battery pack 80, respectively. It has become. Here, although the main body side control terminal 53a and the main body side monitoring terminal 53b are dedicated terminals for the capacitor pack 70 as described above, even when the battery pack 80 is inserted instead of the capacitor pack 70, It does not come into contact with the battery pack 80.

{The configuration of the capacitor pack 70 and the battery pack 80 as the power supply pack 60 will be described in detail below to refer to the configuration for realizing this.

<Power supply pack>
FIG. 7 is a perspective view illustrating a capacitor pack 70 as the power supply pack 60, and FIG. 8 is a cross-sectional view illustrating the configuration of the capacitor pack 70. FIG. 9 is a perspective view illustrating a battery pack as the power supply pack 60. Further, FIG. 10 is a cross-sectional view showing a state where the capacitor pack 70 is housed in the power supply mounting section 50 as a power supply housing section and a state where the battery pack 80 is housed in the power supply mounting section 50.

As described above, the power supply pack 60 functions as a power supply for supplying power to the control unit 40 as an electronic component. The power pack 60 includes a capacitor pack 70 containing a capacitor 71 and a battery pack 80 containing a battery 81.

-Capacitor pack-
More specifically, the capacitor pack 70 is formed in a rectangular thin plate shape that is horizontally long in the left-right direction and has an upper end protruding leftward, and houses the capacitor 71 for the control unit 40 to function as a drive recorder. Become. More specifically, the capacitor pack 70 includes a cylindrical electric double layer capacitor as the capacitor 71. The electric double layer capacitor accommodated as the capacitor 71 is plural as shown in FIG.

The capacitor pack 70 has a plurality of capacitors 71 accommodated in the above manner, and the above-described connector 72 connected to an external power supply 92. Further, as shown in FIG. 4A, the power supplied to the control unit 40 is selected from the power stored in the capacitor 71 and the power supplied from the external power supply 92 via the connector 72. A switching unit 73a is provided for selective selection. As shown in FIG. 8, the switching unit 73a is mounted on a circuit board 73 built in the right end of the capacitor pack 70.

コネクタ As shown in FIG. 3, the connector 72 is formed by cutting off the upper half of the right end of the capacitor pack 70. In the present embodiment, the connector 72 is a USB connector.

Power supplied from the capacitor pack 70 or the external power supply 92 via the switching unit 73a is output from a plurality of capacitor terminals 74 provided in the capacitor pack 70 as shown in FIG. Each of these capacitor terminals 74 is provided on the left side surface of the capacitor pack 70 and is arranged vertically. In the present embodiment, a total of five capacitor terminals 74 are provided. The five capacitor terminals 74 are provided as terminals independent of each other.

は More specifically, the upper portion 70a on the left side surface of the capacitor pack 70 protrudes leftward compared to the lower portion 70b on the same side surface. A capacitor-side control terminal 74a and a capacitor-side monitoring terminal 74b are provided in the protruding upper portion 70a as capacitor terminals 74 in order from the top. On the other hand, a capacitor-side output terminal 74c, a capacitor-side multifunctional terminal 74d, and a capacitor-side ground terminal 74e are provided in the lower portion 70b as capacitor terminals 74 in this order from the top.

Here, the capacitor-side control terminal 74a functions as a control terminal for controlling the storage of the capacitor 71. When the capacitor pack 70 is mounted on the housing 11, the control unit 40 is electrically connected to the switching unit 73a and the like via the capacitor-side control terminal 74a. Then, the control unit 40 monitors the power supply from the external power supply 92, detects that the power supply has been cut off, controls the switching unit 73 a, and controls the power storage in the capacitor 71.

{Circle around (4)} The capacitor-side monitoring terminal 74b functions as a detection terminal for detecting the state of charge in the capacitor 71. When the capacitor pack 70 is mounted on the housing 11, the control unit 40 is electrically connected to the capacitor 71 via the capacitor-side monitoring terminal 74b. Then, the control unit 40 detects the voltage of the capacitor 71 through the capacitor-side monitoring terminal 74b, and determines the state of charge in the capacitor 71 based on the detection result.

That is, when the capacitor pack 70 accommodating the electric double layer capacitor is used as the power supply pack 60, the voltage increases and decreases substantially linearly during charging and discharging. Therefore, by detecting the voltage of the capacitor 71, the state of charge in the capacitor 71 can be appropriately determined.

The capacitor-side output terminal 74c functions as an output terminal for supplying power from the capacitor 71 or the external power supply 92. When the capacitor pack 70 is mounted on the housing 11, the control unit 40 is electrically connected to the switching unit 73a via the capacitor-side output terminal 74c. The control unit 40 can perform various processes using the power supplied via the switching unit 73a.

(4) The capacitor-side multi-function terminal 74d functions as a terminal for detecting the supply state of the external power supply 92. When the capacitor pack 70 is mounted on the housing 11, the control unit 40 is electrically connected to the connector 72 via the capacitor-side multifunctional terminal 74d. The control unit 40 can detect ON / OFF of the external power supply 92 based on whether power is supplied through the connector 72.

The capacitor-side ground terminal 74e functions as a terminal for grounding the capacitor pack 70 and the recorder body 10. When the capacitor pack 70 is mounted on the housing 11, the recorder body 10 is grounded via the capacitor-side ground terminal 74e.

When the capacitor pack 70 is inserted through the insertion opening 52 provided in the power supply mounting portion 50, the five main body terminals 53 provided in the power supply mounting portion 50 are respectively connected to the five capacitor terminals 74 provided in the capacitor pack 70. It is constituted so that it may contact oppositely. When the terminals come into contact with each other, the power supply mounting portion 50, and eventually the recorder body 10, and the capacitor pack 70 are electrically connected.

Specifically, when the capacitor pack 70 is inserted into the power supply mounting portion 50, the capacitor side control terminal 74a and the main body side control terminal 53a are electrically connected, and the capacitor side monitoring terminal 74b and the main body side monitoring terminal 53b are electrically connected. Connected to.

As described above, the portion 51a of the power supply mounting portion 50 where the main body side control terminal 53a and the main body side monitoring terminal 53b are provided is depressed leftward. However, the portion 70a of the capacitor pack 70 where the capacitor-side control terminal 74a and the capacitor-side monitoring terminal 74b are provided protrudes leftward. Therefore, when the capacitor pack 70 is inserted into the power supply mounting portion 50, as shown in the upper diagram of FIG. 10, the portion 51a on the power supply mounting portion 50 side and the portion 70a on the capacitor pack 70 side are not separated from each other and Appropriately comes close without pressing each other.

(4) By electrically connecting the main body side control terminal 53a and the capacitor side control terminal 74a, the control unit 40 and the switching unit 73a are electrically connected. Further, by electrically connecting the capacitor side monitoring terminal 74b and the main body side monitoring terminal 53b, the control unit 40 and the capacitor 71 are electrically connected. By connecting in this manner, a function corresponding to each terminal is exhibited.

On the other hand, when the capacitor pack 70 is inserted into the power supply mounting portion 50, the capacitor-side output terminal 74c and the input terminal 53c are electrically connected, and the capacitor-side multifunction terminal 74d and the main body-side multifunction terminal 53d are electrically connected. Then, the capacitor side ground terminal 74e and the main body side ground terminal 53e are electrically connected.

制御 By electrically connecting the capacitor-side output terminal 74c and the input terminal 53c, the control unit 40 and the switching unit 73a are electrically connected. Further, by electrically connecting the capacitor-side multi-function terminal 74d and the main-body-side multi-function terminal 53d, the control unit 40 and the connector 72 are electrically connected. Also, by electrically connecting the capacitor side ground terminal 74e and the main body side ground terminal 53e, both the capacitor pack 70 and the recorder main body 10 are grounded. By connecting in this manner, a function corresponding to each terminal is exhibited.

-Battery pack-
On the other hand, as shown in FIG. 9, the battery pack 80 is formed in a rectangular thin plate that is horizontally long in the left-right direction, and houses a battery 81 for the control unit 40 to function as an action camera. More specifically, the battery pack 80 contains, as the battery 81, a secondary battery known as a lithium ion battery.

(7) The power supplied from the battery pack 80 is output from a plurality of battery terminals 82 provided in the battery pack 80, as shown in FIG. These battery terminals 82 are all provided on the left side surface of the battery pack 80, and are arranged side by side in the vertical direction. In the present embodiment, a total of three battery terminals 82 are provided.

は More specifically, unlike the capacitor pack 70, the left side surface of the battery pack 80 is formed flat. A lower portion 80a on the left side surface includes, in order from the top, a battery-side output terminal 82c for supplying power from the battery 81 as a battery terminal 82, and a battery-side multifunctional terminal 82d serving as a T terminal. And a battery-side ground terminal 82e for grounding.

When the battery pack 80 is inserted from the insertion opening 52 provided in the power supply mounting portion 50, a part of the five main body terminals 53 provided in the power supply mounting portion 50 respectively becomes three battery terminals provided in the battery pack 80. It is configured so as to face and contact each of the terminals 82. When the terminals come into contact with each other, the power supply mounting section 50, and eventually the recorder body 10, and the battery pack 80 are electrically connected.

Specifically, when the battery pack 80 is inserted into the power supply mounting section 50, the battery-side output terminal 82c and the input terminal 53c are electrically connected, and the battery-side multifunction terminal 82d and the main body-side multifunction terminal 53d are electrically connected. , And the battery-side ground terminal 82e and the main-unit-side ground terminal 53e are electrically connected.

That is, the input terminal 53c serving as an input terminal is connected to the capacitor-side output terminal 74c when the capacitor pack 70 is mounted as the power pack 60, while the battery terminal 80c is mounted when the battery pack 80 is mounted as the power pack 60. It is arranged so as to be connected to the side output terminal 82c.

(4) By electrically connecting the battery-side output terminal 82c and the input terminal 53c, power can be supplied from the battery 81 to the control unit 40.

When the battery-side multi-function terminal 82d and the main-body-side multi-function terminal 53d are electrically connected, these terminals function as so-called T terminals. This allows the control unit 40 to detect the temperature of the battery pack 80.

Also, by electrically connecting the battery-side ground terminal 82e and the main-unit-side ground terminal 53e, both the battery pack 80 and the recorder main body 10 are grounded.

As described above, the main body side control terminal 53a and the main body side monitoring terminal 53b are provided as the main body terminals 53 in the upper portion 51a at the left end of the accommodation space 51. Although these terminals all protrude rightward, the battery pack 80 is not provided with the corresponding terminals.

Therefore, when the battery pack 80 is inserted into the power supply mounting portion 50, the main body side control terminal 53a and the main body side monitoring terminal 53b may interfere with the left side surface of the battery pack 80 and cause buckling.

However, in the present embodiment, the upper portion 51a is depressed leftward. Therefore, as shown in the lower diagram of FIG. 10, even if the battery pack 80 is inserted into the power supply mounting portion 50, it is possible to prevent the battery pack 80 from buckling the main body side control terminal 53a and the main body side monitoring terminal 53b. .

<Specific examples>
FIG. 11 is a block diagram showing a specific example of the recorder main body 10 and the capacitor pack 70. FIG. 11 shows a vehicle-mounted state, which corresponds to a state where the capacitor pack 70 is mounted on the power supply mounting section 50 and the terminal 53 for the main body and the terminal 74 for the capacitor are electrically connected.

As shown in FIG. 11, of the power taken in from the external power supply 92 via the connector 72, the power input to the control unit 40 includes a switching unit 73a, a capacitor-side output terminal 74c, and an input terminal 53c. Divide by passing in order. One of the divided currents is input to the control unit 40 via the power supply circuit 40c, and the other of the divided currents is input to an AD port of an ASIC included in the control unit 40.

Further, of the power taken from the external power supply 92, the power charged in the capacitor 71 passes through the booster circuit 73b and the current limiting circuit 73c composed of an FET (Field Effect Transistor) in order. The capacitor 71 is reached.

When the switching unit 73a switches from the state shown in FIG. 11, the circuit for supplying power from the external power supply 92 to the control unit 40 is cut off, while the power supply from the capacitor 71 to the control unit 40 is permitted. Become. At this time, the power supplied from the capacitor 71 is input to the control unit 40 through the same path as when power is supplied from the external power supply 92.

On the other hand, part of the power taken from the external power supply 72 is input to the second AD port of the ASIC via the capacitor-side multi-function terminal 74d and the main-body-side multi-function terminal 53d. I have. The input power detects ON / OFF of the external power supply 72 as an accessory power supply in the on-vehicle state shown in FIG.

As shown in FIG. 11, the capacitor side ground terminal 74e is grounded in the capacitor pack 70, while the main body side ground terminal 53e is grounded in the recorder main body 10. By connecting the capacitor side ground terminal 74e and the main body side ground terminal 53e, both the capacitor pack 70 and the recorder main body 10 are grounded.

(4) The potential difference in the capacitor 71 is detected in order to determine the state of charge in the capacitor 71. For this purpose, the capacitor 71 is connected to the third AD port in the ASIC via the capacitor-side monitoring terminal 74b and the main-body-side monitoring terminal 53b.

{Circle around (4)} The capacitor pack 70 is provided with a power cutoff detection circuit 73d for detecting that power supply from the external power supply 72 has been interrupted. The detection signal output from the disconnection detection circuit 73d is input to the ACC port of the ASIC via the capacitor-side control terminal 74a and the main-unit-side control terminal 53a. The control signal output from the CHG port of the ASIC sequentially passes through the buffer 40d, the main body control terminal 53a, and the capacitor control terminal 74a, and is input to the booster circuit 73b and the switching unit 73a. . This makes it possible to control the booster circuit 73b and the switching unit 73a, respectively.

<About the terminals of the capacitor pack>
The inventors of the present application have studied to accommodate a capacitor such as an electric double layer capacitor instead of accommodating a battery in the power supply pack. Although this capacitor can store power supplied from the outside, it is conceivable to appropriately determine the storage state of the capacitor in order to use the stored power effectively.

On the other hand, according to the present embodiment, the capacitor pack 70 has the capacitor-side monitoring terminal 74b in addition to the capacitor-side output terminal 74c (see FIG. 7). The capacitor pack 70 and the control unit 40 of the drive recorder device 1 can be connected via the capacitor-side monitoring terminal 74b. This makes it possible to detect the state of charge of the capacitor 71 and determine this.

(4) In order to use the capacitor pack 70 and the external power supply 92 together, it is necessary to appropriately control the storage of electricity in the capacitor pack 70. Such control may be performed by the control unit 40 for controlling the drive recorder device 1, for example. In order to realize such a configuration, it is necessary to electrically connect the power pack 60 and the control unit 40, but the above-described capacitor-side output terminal 74c and capacitor-side monitoring terminal 74b are not sufficient. is there.

On the other hand, as shown in FIG. 7, the capacitor pack 70 has a capacitor-side control terminal 74a separately from the capacitor-side output terminal 74c and the capacitor-side monitoring terminal 74b. The capacitor pack 70 and the control unit 40 can be connected via the capacitor-side control terminal 74a. This makes it possible to appropriately control the storage of the capacitor pack 70.

Further, as shown in FIGS. 6 and 10, the input terminal 53c can be reused both when the capacitor pack 70 is mounted on the housing 11 and when the battery pack 80 is mounted on the housing 11. . Thus, the configuration inside the housing 11 can be shared between when the capacitor pack 70 is mounted and when the battery pack 80 is mounted, and the number of components can be reduced.

Generally, electric double layer capacitors are stored in a shorter time than secondary batteries, so that emergency power can be reliably maintained. Further, in an electric double layer capacitor, unlike a secondary battery, a chemical reaction does not occur in an electrode, so that deterioration of the electrode is suppressed and the life is relatively long.

Therefore, selecting an electric double layer capacitor as a capacitor to be packed as the capacitor pack 70 requires securing of emergency power, as in a drive recorder, and always operates during operation of the vehicle. Suitable for use in various devices.

<< Other embodiments >>
In the above embodiment, a cylinder-type electric double layer capacitor is used as the capacitor 71 housed in the capacitor pack 70, but the invention is not limited to this configuration. Instead of the cylinder type electric double layer capacitor, a coin (button) type, laminate type or other electric double layer capacitor may be used, or a capacitor other than the electric double layer capacitor may be used.

Also, in the above embodiment, the battery 81 housed in the battery pack 80 is configured to use a secondary battery configured as a lithium-ion battery, but is not limited to this configuration. A disposable battery may be used instead of the lithium ion battery.

In addition, in the above-described embodiment, the configuration including one control unit 40 is disclosed as the electronic component, but the present invention is not limited to this configuration. For example, an electronic component that functions as a drive recorder and an electronic component that functions as a portable device may be separately provided. Thus, the present disclosure can be applied to a configuration in which a plurality of electronic components are provided.

Also, in the above-described embodiment, the housing 11 is configured to be attached to the windshield 101 via the support 20, but the present invention is not limited to this configuration. For example, it may be placed on a dashboard or attached to a roof panel.

1 Drive recorder device (electronic equipment)
11 Housing 40 Control unit 53c Input terminal (input terminal)
60 Power pack 70 Capacitor pack 71 Capacitor 74 Capacitor terminal 74a Capacitor side control terminal (control terminal)
74b Capacitor side monitoring terminal (detection terminal)
74c Capacitor side output terminal (output terminal)
80 Battery pack 81 Battery 82 Battery terminal 82c Battery output terminal

Claims

An electronic device that operates by power supplied from a detachable power pack,
The power pack includes a capacitor pack containing a capacitor,
The capacitor pack includes:
An output terminal for supplying power from the capacitor;
An electronic device, comprising: a detection terminal provided independently of the output terminal, for detecting a state of charge storage in the capacitor.
The electronic device according to claim 1,
An electronic device, wherein the capacitor pack has a control terminal for controlling power storage of the capacitor.
The electronic device according to claim 1,
A housing to which the power pack is mounted;
An input terminal provided on the housing,
The power supply pack further includes a battery pack containing a battery,
The battery pack has a battery-side output terminal for supplying power from the battery,
The input terminal is connected to the output terminal when the capacitor pack is mounted as the power pack, and is connected to the battery-side output terminal when the battery pack is mounted as the power pack. Electronic equipment characterized by being arranged so that it may be.
The electronic device according to any one of claims 1 to 3,
When the capacitor pack is mounted, the control unit is electrically connected to the capacitor via the detection terminal,
The electronic device, wherein the control unit detects a voltage of the capacitor through the detection terminal, and determines a power storage state of the capacitor based on the detection result.
The electronic device according to any one of claims 1 to 4,
An electronic device, wherein the capacitor pack contains an electric double layer capacitor as the capacitor.