JP6573073B2 - Battery device charging structure and electric vehicle - Google Patents

Description

  The present invention relates to a charging structure for a battery device and an electric vehicle.

  An electric vehicle such as an electric bicycle is configured such that a motor is driven by a battery and this driving force is applied to travel. In such an electric vehicle, a battery device with a built-in battery is detachable from a battery mounting portion provided in the electric vehicle, and the battery device is removed from the battery mounting portion of the electric vehicle when charging the battery. There are some which are configured so as to be able to be charged by attaching a battery device to a charger provided separately from the detachable and electric vehicle (for example, Patent Document 1). According to this configuration, the charger can be brought into a favorite place such as a room and charged, which is convenient.

  As disclosed in Patent Document 1, Patent Document 2, and the like, a plurality of connection terminals are provided, for example, on a battery mounting portion of a charger to which this type of battery device is mounted or a battery mounting portion of an electric vehicle. In many cases, it is arranged in a protruding state. Also, in this case, the connection terminals are arranged in a state of extending downward in the bottom portion of the battery device corresponding to the above configuration. When removing the battery device from the battery mounting portion of the charger or electric vehicle, the battery device is pulled upward with a relatively large force so that the connection terminals are separated and the battery device is lifted and removed. Has been.

  However, in such a structure, when removing the battery device from the battery mounting portion of the charger or electric vehicle, a large force that combines the force for separating the connection terminals and the force for lifting the battery device is required at the same time. Therefore, a heavy burden is imposed on the battery device handler.

  As a method for reducing the burden on the battery device handler, for example, Patent Document 3 discloses that a battery mounting portion of an electric vehicle is provided with a rotation support portion that rotatably supports the battery device. A structure in which a rotation fulcrum (rotation portion) that can be fitted to the rotation support portion is provided is disclosed. And according to this structure, when removing a battery apparatus, after rotating a battery apparatus in a battery mounting part and detaching | disconnecting connection terminals first, a battery apparatus can be lifted and removed. If a structure similar to such a structure is adopted for the battery mounting portion and the battery of the charger, the timing when the connecting terminals are detached from each other and when the battery device is lifted is different. The battery device can be removed.

JP-A-10-27629 JP 11-115873 A JP 2001-219887 A

  However, when the battery mounting portion of the charger is provided with a rotation support portion that rotatably supports the battery device, and the battery device is provided with a rotation fulcrum that can be fitted to the rotation support portion. In addition, when the battery device is rotated to be removed from the charger, the battery device may fall out of the battery mounting portion of the charger unless the battery device is securely held. For example, when the charger is placed at a relatively high place such as on a shelf or shoe box, the battery device dropped from the high place may come into contact with the floor surface and be damaged.

  The present invention solves the above-mentioned problems, and not only can the battery device be removed from the charger or the electric vehicle with a relatively small force, but also the battery device is dropped and damaged when the battery device is rotated. It is an object of the present invention to provide a charging structure for a battery device and an electric vehicle that can prevent the above.

  In order to solve the above-described problems, a battery device charging structure according to the present invention includes a battery device that is detachably attached to an electric vehicle and has a built-in battery, and a battery mounting portion that charges the battery of the battery device. A charging structure for the battery device in which a connection terminal is provided on each of the battery device and the charger, and the battery device is connected to a battery mounting portion of the charger. A rotation support portion is provided for movably support, and the battery device is provided with a rotation portion that can be fitted to the rotation support portion. The battery device is connected to the battery mounting portion of the charger. A connection posture in which the connection terminal of the battery device is connected to a connection terminal of the charger, and a separation posture in which the connection terminal of the battery device is detached from the connection terminal of the charger. Therefore, the battery device is rotatably disposed, and abuts against the contacted portion when the battery device is rotated from the connection posture to the separation posture, thereby preventing further rotation from the separation posture. In addition, a rotation restricting portion that holds the disengagement posture is provided. The electric vehicle is preferably an electric bicycle, but is not limited thereto.

  With this configuration, when removing the battery device from the charger, first, the battery device is rotated from the connection posture to the release posture, and the battery device rotated to the release posture is removed from the charger. Since the timing when the connecting terminals are detached from each other and when the battery device is lifted is different, the battery device can be removed with a relatively small force. Further, since the rotation restricting portion is provided, even when the battery device is rotated to the separation posture, the battery device is held in the separation posture and the battery device is prevented from dropping from the battery mounting portion of the charger.

  In addition, it is preferable that the connection posture and the separation posture of the battery device are postures that are inclined with respect to the charger, respectively, and are orthogonal to the placement surface on which the charger is placed and the charger More preferably, the inclination angle of the connection posture that is inclined with respect to the passing vertical line is larger than the inclination angle of the separation posture. Thus, since the inclination angle of the connection posture is large, the connection posture of the battery device can be held in a more stable state.

  Further, a remaining amount display unit for displaying the remaining amount of electricity of the battery is provided on a side surface of the battery device, and the remaining amount display unit is directly above the charger in a state where the charger is mounted on a horizontal mounting surface. As can be seen from the above, it is preferable that the connection posture of the battery device is inclined. Thereby, when the charger is placed on the floor or the like for charging, the remaining amount of electricity in the battery can be easily visually recognized from above.

  The electric vehicle according to the present invention is an electric vehicle that includes a battery device that is detachably attached to a battery mounting portion, and each of the battery device and the battery mounting portion is provided with a connection terminal. The battery device is provided with a rotation support portion that rotatably supports the battery device, the battery device is provided with a rotation portion that can be fitted to the rotation support portion, and the battery device is attached to the battery. A connection posture in which the connection terminal of the battery device is connected to the connection terminal of the battery mounting portion with respect to the portion, and a separation in which the connection terminal of the battery device is detached from the connection terminal of the battery mounting portion The battery device is disposed so as to be freely rotatable over the posture, and contacts the contacted portion when the battery device is turned from the connection posture to the separation posture, and further rotates than the separation posture. Wherein the rotation restricting portion for holding the disengagement position with blocking Rukoto is provided.

  With this configuration, when removing the battery device from the battery mounting portion of the electric vehicle, first, the battery device is rotated from the connection posture to the release posture, and the battery device rotated to the release posture is changed to the battery of the electric vehicle. By removing from the mounting portion, the timing for separating the connection terminals from each other and the timing for lifting the battery device are different, so that the battery device can be removed with a relatively small force. In addition, since the rotation restricting portion is provided, even when the battery device is rotated to the disengagement posture, the battery device is held in the disengagement posture to prevent the battery device from dropping from the battery mounting portion of the electric vehicle.

  According to the present invention, the battery mounting portion of the charger is provided with a rotation support portion that rotatably supports the battery device, and the battery device includes a rotation portion that can be fitted to the rotation support portion. The battery device is connected to the battery mounting portion of the charger from a connection posture in which the connection terminal of the battery device is connected to the connection terminal of the charger, and from the connection terminal of the charger Since the battery terminal is pivotably disposed over the detached posture in which the connection terminal is detached, when the battery device is detached from the charger, the battery device and the battery device are separated from each other. The timing of lifting the battery device can be made different, the battery device can be removed with a relatively small force, and the burden on the battery device operator can be reduced.

  Further, when the battery device is rotated from the connection posture to the separation posture, the battery device is brought into contact with the contacted portion to prevent further rotation than the separation posture and to hold the separation posture. By providing the movement restricting portion, even when the battery device is rotated to the disengagement posture, the disengagement posture is maintained and the battery device is prevented from dropping from the battery mounting portion of the charger. As a result, the battery device does not fall off from the battery mounting portion of the charger, so that the dropped battery device does not come into contact with the floor surface and is damaged and reliability is improved.

  In addition, the battery device is disposed so that the connection posture and the disconnection posture of the battery device are inclined with respect to the charger, and is orthogonal to the mounting surface on which the charger is placed and the charger. The connection posture of the battery device can be maintained in a more stable state by disposing the inclination angle of the connection posture that is inclined with respect to a vertical line passing through a larger angle than the inclination angle of the separation posture. And reliability is improved.

  Further, a remaining amount display unit for displaying the remaining amount of electricity of the battery is provided on a side surface of the battery device, and the remaining amount display unit is directly above the charger in a state where the charger is mounted on a horizontal mounting surface. As can be seen from the above, it is preferable that the connection posture of the battery device is inclined. Thereby, when the charger is placed on the floor or the like and charged, the remaining amount of electricity of the battery can be easily visually recognized from above, which is convenient.

  The battery mounting portion of the electric vehicle is provided with a rotation support portion that rotatably supports the battery device, and the battery device is provided with a rotation portion that can be fitted to the rotation support portion. The battery device has a connection posture in which the connection terminal of the battery device is connected to the connection terminal of the electric vehicle with respect to the battery mounting portion of the electric vehicle, and the connection state of the battery device from the connection terminal of the electric vehicle. When the battery device is removed from the electric vehicle, when the battery device is removed from the electric vehicle and when the battery device is lifted, the connection terminal is detached from the detached posture. Can be made different, the battery device can be removed with a relatively small force, and the burden on the battery device handler can be reduced.

1 is an overall left side view of an electric bicycle including a battery device according to an embodiment of the present invention. Overall left side view schematically showing a state where the battery device is removed from the electric bicycle. A perspective view of a battery device and a battery mounting portion in the electric bicycle Front view of the battery device of the electric bicycle Left side view of the battery device of the electric bicycle Partial cutaway rear view of the battery device of the same electric bicycle Perspective view of battery mounting part in the same electric bicycle The main part perspective view which looked at the lower part of the battery apparatus of the electric bicycle from the diagonally lower side The figure which looked at the state which has installed the battery device in the battery mounting part of the electric bicycle from the rear The figure which looked at the state at the time of removing a battery apparatus from the battery mounting part of the electric bicycle from back The perspective view of the charger which concerns on embodiment of this invention The front view which shows the state (connection state) with which the battery apparatus was mounted | worn with the charger Left side view showing the battery device attached to the charger (connected state) Left side sectional view showing a state in which the battery device is mounted on the charger (connected state) Cross-sectional view of the main part left side showing a state (connection state) of the battery device mounted on the charger The top view which shows the state (connection state) which mounted | wore the charger with the battery apparatus Left side view showing the battery device attached to the charger (detached state) Left side sectional view showing a state in which the battery device is attached to the charger (detached state) A left side cross-sectional view of the main part showing a state in which the battery device is mounted on the charger (detached state). A state in which the battery device is mounted on the battery mounting portion of the electric bicycle according to the embodiment of the present invention. The figure which looked at the state at the time of removing a battery apparatus from the battery mounting part of the electric bicycle from back

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, as a general rule, the left and right direction refers to a direction that turns to the left and right when riding on the electric bicycle and facing the traveling direction. Further, in the description of the case where the charger and the battery device are mounted on the charger, the left-right direction indicates the left-right direction when viewed in the direction in which the remaining amount display portion of the battery device is the front. However, the present invention is not limited to the arrangement of the following configuration in the left-right direction. Needless to say, for example, a configuration in which the left-right direction is reversed can be adopted.

  1 in FIG. 1 and FIG. 2 is an electric bicycle (also referred to as an electric assist bicycle) that is an example of an electric vehicle. A battery device 12 in the battery device charging structure according to the embodiment of the present invention is detachably attached to the electric bicycle 1.

  The electric bicycle 1 has a metal body frame (vehicle body) 2 composed of a head pipe 2a, a front fork 2b, a main pipe 2c, a standing pipe 2d, a chain stay 2e, a seat stay 2f, and the like, and a lower end of the front fork 2b. The front wheel 3 attached to the rear, the rear wheel 4 rotatably attached to the rear end of the chain stay 2e, the handle 5 for changing the direction of the front wheel 3, the saddle 6 on which the occupant sits, and the human power comprising the pedaling force A crank 7 and a pedal 8 to which a driving force is applied, an electric motor 9 as a driving source for generating an assisting force (auxiliary driving force), and a controller for performing various electrical controls including the motor 9 are provided. The drive unit 10 and the manual drive force based on the pedaling force from the pedal 8 and the crank 7 and the auxiliary drive force from the drive unit 10 are transmitted to the rear wheels 4 without transmission. A chain 11 serving as a driving force transmission body, a battery device 12 including a battery made of a secondary battery for supplying driving power to the motor 9, and a battery mounting portion 13 for mounting the battery device 12 in a detachable state. A battery lock unit 40 that locks the battery device 12 mounted on the battery mounting unit 13, a unit cover 14 that covers the battery mounting unit 13, the left side of the drive unit 10, and the like.

  Moreover, 50 in FIGS. 11-18 is a charger which charges the battery apparatus 12 (specifically, the battery of the battery apparatus 12). When charging the battery device 12, the battery device 12 is detached from the battery mounting portion 13 of the electric bicycle 1, and the battery device 12 is attached to a charger 50 provided separately from the electric bicycle 1 so that the battery device 12 can be charged. It is configured. The structure of the charger 50 will be described in detail later.

  As shown in FIG. 3 to FIG. 8 and the like, the battery device 12 includes a substantially box-shaped battery case 16 and a battery (a plurality of secondary batteries built in the battery case 16. 20 schematically shows the outer shape of the whole battery pack to which the battery is connected), a locked portion 17 integrally formed on a part of the upper front surface of the battery case 16, and a handle integrally formed on the upper portion of the battery case 16. Part 18, a remaining amount display unit 19 that is provided at a position below the handle 18 on the upper side surface of the battery case 16 and displays the remaining amount of electricity of the battery 20. The remaining amount display unit 19 includes a plurality of display elements (in this embodiment, liquid crystal display elements) 19a for displaying the remaining amount of electricity of the battery 20, and a display for performing a display operation when pressed. And a pressing switch portion 19b. In the present embodiment, the battery case 16 is divided into two parts on the right and left, and the claw part (engagement part) and the recess (engaged part) that engage with each other are in a state in which the battery 20 and the like are incorporated. It is assembled, but it is not limited to this.

  A plurality of connection terminals 32 (see FIGS. 3 and 7) provided on the bottom surface of the battery device 12 (battery case 16) so as to protrude upward from the battery mounting portion 13 of the electric bicycle 1 and a charger described later. A plurality of insertion holes 21 (see FIG. 8) for inserting connection terminals 51 provided at 50 (see FIGS. 11 to 18) are formed. In addition, the inner side of the battery device 12 corresponding to the insertion hole 21 is sandwiched between the connection terminal 32 of the battery mounting portion 13 of the electric bicycle 1 and the connection terminal 51 of the charger 50 from both sides. A connectable connection terminal 22 is provided. Further, as shown in FIGS. 5 and 6, a board (battery control board 25) for controlling the battery device 12 is also built in the battery device 12.

  As shown in FIGS. 3, 8, and the like, a rotation support shaft 24 as a rotation portion that protrudes forward or rearward is provided on the lower front surface and rear surface of the battery case 16. In this embodiment, the rotation support shaft 24 has an elliptical shape that is vertically long (specifically, a shape in which a semicircular portion at the lower end and a semicircular portion at the upper end are connected by a rectangular portion that is vertically long) ). In this embodiment, as shown in FIG. 8 and the like, the lower part of the battery case 16 protrudes downward with the stepped shape part 16b slightly narrower than the upper part and the central part. The pivot support shaft 24 as a pivot part is provided in a state of projecting forward or backward from the front wall portion and the rear wall portion of the projecting portion. Further, as shown in FIGS. 3 and 8, a lower extending portion 16 a is integrally formed on the lower left side surface of the battery case 16 so as to cover the portion of the rotation support shaft 24 from the left side. And in the state which attached the battery apparatus 12 to the electric bicycle 1 or the charger 50 by covering the rotation support shaft 24 from the side by the downward extending portion 16a, in the portion of the rotation support shaft 24 or in the vicinity thereof. It is configured so that it does not pinch hands or the like, and prevents dust from entering. Further, the downward extension 16a prevents the portion of the rotation support shaft 24 and the vicinity thereof from being seen when the battery device 12 is mounted, thereby improving the appearance. Note that reference numeral 16c in FIG. 8 denotes a type determining recess formed in accordance with the type of the battery device 12.

  As shown in FIGS. 1 to 3 and the like, the battery mounting portion 13 of the electric bicycle 1 is provided above the drive unit 10 in this embodiment, and as shown in FIGS. The part 13 has a concave battery fitting part 31 to which the lower end part of the battery device 12 is attached. The battery device 12 is disposed in a space surrounded by the standing pipe 2 d, the chain stay 2 e, the seat stay 2 f, and the mudguard 4 a of the rear wheel 4 in a state where the battery device 12 is attached to the battery insertion portion 31. As shown in FIGS. 3 and 7, a plurality of connection terminals 32 that are electrically connected to the battery of the battery device 12 are provided on the bottom surface of the battery insertion portion 31. These connection terminals 32 can be inserted into and removed from the insertion hole 21 (see FIG. 8) of the battery device 12, and are located in the battery insertion portion 31.

  As shown in FIGS. 3, 7, etc., shaft insertion grooves (rotating support portions of the battery mounting portion 13 of the electric bicycle 1) 33 are formed in the left front end portion and the left rear end portion of the battery mounting portion 13, respectively. The rotation support shaft 24 of the battery device 12 is detachable and rotatable with respect to the shaft insertion groove 33. As shown in FIG. 1, when the battery device 12 is attached to the battery attachment portion 13 of the electric bicycle 1 (also referred to as when the battery is attached), as shown in FIG. The rotating support shafts 24 are fitted into both the shaft fitting grooves 33 while fitting into the insertion portion 31, and the connection terminal 32 of the battery mounting portion 13 is inserted into the insertion hole 23 of the battery device 12. Further, when the battery device 12 is mounted on the battery mounting portion 13 of the electric bicycle 1, as shown in FIG. 10, the lower portion of the battery device 12 is placed on the electric bicycle 1 with the battery device 12 inclined to the left side. As shown in FIG. 9, the upper part of the battery device 12 is rotated to the right with the rotation support shaft 24 as a center, as shown in FIG. It is configured to move and stand up. Thereby, the connection terminal 32 of the battery mounting portion 13 is inserted into the insertion hole 23 of the battery device 12, and the battery device 12 is mounted to the battery mounting portion 13 as shown in FIG. The connection terminal 32 is connected to the connection terminal 22 of the battery device 12. 3 is a type discrimination rib projecting on the right side wall of the battery insertion portion 31 of the battery mounting portion 13, and the battery device 12 having the type discrimination recess 16c corresponding to the type discrimination rib 34, That is, only the compatible battery device 12 can be mounted on the battery mounting portion 13.

  As shown in FIGS. 1 and 2, the standing pipe 2 d is provided with a battery lock portion 40 that locks (fixes) the battery device 12 attached to the battery attachment portion 13. The battery lock unit 40 includes a lock device 41. When the battery device 12 is mounted in a state where a key (not shown) of the lock device 41 is removed, the battery device 12 is locked in the mounting posture. ing. Further, when the key is inserted into the lock device 41 in the mounted posture and unlocked, the battery device 12 is unlocked, and the battery device 12 is rotated to the left, whereby the battery device 12 is moved to the electric bicycle 1. It can be taken out to be removed from the battery mounting portion 13 and charged.

  Reference numeral 50 in FIGS. 11 to 18 denotes a charger that charges the battery 20 of the battery device 12. FIG. 11 shows the charger 50 alone, and FIGS. 11 to 16 show the battery device 12 mounted on the charger 50. In this embodiment, the charger 50 and the battery device 12 constitute a charging structure for the battery device 12 according to the present embodiment. The charger 50 has a charging circuit (including a charging control circuit) 58 (simply shown in FIGS. 15 and 16) and a power connection cord 57 connected to an AC power source (AC power source). Is connected.

  As shown in FIG. 11 and the like, a battery mounting portion 52 for detachably mounting the battery device 12 on the upper surface portion of the charger 50 (more specifically, a charger case constituting the outer shell portion of the charger 50). Is provided. The battery mounting portion 52 of the battery charger 50 has a substantially concave battery insertion portion 53 as viewed from the front in which the lower end portion of the battery device 12 is fitted, and a diagonally upward position from the bottom side of the bottom portion of the battery insertion portion 53. A plurality of protruding connection terminals 51 and a stepped shape portion 16b (see FIG. 8) provided on the lower side of the battery device 12 so as to project obliquely upward at both sides of the battery insertion portion 31. A projecting receiving portion 54 that can be received from below and both side wall surfaces of the battery insertion portion 53 are formed so as to be recessed downward, and the rotation support shaft (rotating portion) 24 of the battery device 12 can be fitted freely. A rotation support portion 55 and a support wall portion (front support wall portion) 56 forming a front wall portion of the rotation support portion 55 are formed. In this embodiment, the battery disc 12 having a type discriminating recess 16c corresponding to the type discriminating rib 59 is provided on the back surface of the battery insertion portion 53. Only the compatible battery device 12 is configured to be mounted on the battery mounting portion 52 and charged.

  As shown in FIGS. 11 to 15, the battery device 12 is connected to the battery mounting portion 52 of the charger 50 with the rotation support shaft 24 fitted in the rotation support portion 55 of the charger 50. The connection posture in which the connection terminal 22 of the battery device 12 is connected to the connection terminal 51 of 50, and the connection terminal 22 of the battery device 12 from the connection terminal 51 of the charger 50 as shown in FIGS. It is disposed so as to be rotatable over the disengagement posture from which the is disengaged. That is, the semicircular portion (also referred to as the lower semicircular portion) of the lower end portion of the rotation support shaft 24 rotates about the rotation support shaft 24 of the battery device 12 with respect to the battery mounting portion 52 of the charger 50. In a state of sliding in the semicircular groove portion at the lower end of the support portion 55, the support portion 55 is disposed so as to be rotatable (centering on these semicircular central portions). Then, by rotating the battery device 12 from the connection posture to the release posture side, the connection terminal 22 of the battery device 12 is detached from the connection terminal 51 of the charger 50 at a position in the middle of the rotation.

  In addition, the connection posture and the separation posture are both inclined postures. In other words, in this embodiment, assuming that the state shown in FIG. 12 is the front, the battery device 12 is held in a state where the charger 50 is placed on a horizontal surface and is inclined backward in the connection posture, and detached. In the posture, it is held in a posture inclined forward.

  Here, as shown in FIG. 14, when the battery device 12 is in the connection posture, each connection terminal 51 provided in the battery mounting portion 52 of the charger 50 is inserted into the insertion hole 23 of the battery device 12. The battery device 12 is mounted on the battery mounting portion 52 of the charger 50, and the connection terminal 51 of the battery mounting portion 52 is connected to the connection terminal 22 of the battery device 12. At this time, the lower semicircular portion and the right side surface portion of the rotation support shaft (rotation portion) 24 of the battery device 12 are received by the bottom portion and the right wall surface of the rotation support portion 55, as shown in FIG. The bottom surface portion of the battery device 12 is placed on and supported by an inclined surface 53 a formed on the bottom surface portion on the right side of the battery insertion portion 53 of the charger 50. Further, as shown in FIG. 14, the stepped shape portion 16 b of the battery device 12 is placed on and supported by the protruding receiving portion 54 of the charger 50.

  As shown in FIGS. 15 and 19, in addition to the above-described configuration, each extending portion 16 a provided at the lower portion of the battery device 12 (battery case 16) includes a rotation support shaft (rotating portion) of the battery device 12. ) A state bent to the side approaching 24 (as shown in FIGS. 15 and 19, the battery device 12 is mounted on the charger 50, which is the rear side and the right side in FIG. 15 and FIG. 19). A rotation restricting portion 26 protruding at is provided. In this embodiment, the rotation restricting portion 26 is integrally formed with the battery case 16 together with the lower extending portion 16a. As shown in FIGS. 13 and 15, the rotation restricting portion 26 is a support wall portion in front of the rotation support portion 55 in the battery mounting portion 52 of the charger 50 when the battery device 12 is in the connection posture. It is separated from the front surface portion (also referred to as the abutted portion) of 56 (also referred to as the front support wall portion). On the other hand, as shown in FIG. 19, when the battery device 12 is positioned in the disengagement posture, the battery device 12 contacts the front surface portion (contacted portion) of the front support wall portion 56 in the battery mounting portion 52 of the charger 50. This restricts the battery device 12 from rotating further forward and holds the battery device 12 in the detached posture.

  At this time, as shown in FIG. 19, the front surface portion of the rotation support shaft 24 of the battery device 12 is provided on the rear surface of the support wall portion (front support wall portion) 56 (where the rotation support portion 55 is formed). (The left portion of the paper surface in FIG. 19) is also in contact. That is, in the detached posture in which the connection terminal 22 of the battery device 12 and the connection terminal 51 of the charger 50 are separated from each other, the charger 50 to which the battery device 12 is mounted is viewed from the side. The battery device 12 is in contact with the charger 50 at two locations (actually, a total of four locations where each rotation support shaft 24 is provided and where each rotation restricting portion 26 is provided) Thereby, the charger 50 is satisfactorily held in the detached posture inclined forward. As a result, the battery device 12 is prevented from falling off the charger 50.

  Further, as described above, the connection posture and the disconnection posture of the battery device 12 are both inclined postures, but in this embodiment, as shown in FIG. An inclination angle α of the connection posture that is orthogonal to the placement surface S and is inclined with respect to a vertical line Y passing through the charger 50 is larger than an inclination angle β of the separation posture (see FIG. 19). Has been.

  In addition, as described above, the remaining amount display unit 19 that displays the remaining amount of electricity of the battery 20 is provided on the side surface of the battery device 12, but with the charger 50 placed on the horizontal placement surface S, As shown in FIG. 16, the connection posture of the battery device 12 is inclined and arranged as shown in FIGS. 13, 14, etc. so that the remaining amount display unit 19 can be seen from directly above the charger 50. Yes. Furthermore, in this embodiment, the remaining amount display unit 19 is located on the side surface of the battery device 12 (a position on the front side when attached to the charger 50 and the left side when attached to the electric bicycle 1). As shown in FIG. 14, it is arranged to be inclined obliquely rearward, so that the remaining amount display unit 19 can be seen well from directly above the charger 50.

  In the above configuration, when charging the battery device 12, the battery device 12 is removed from the battery mounting portion 13 of the electric bicycle 1, and the rotation support shaft 24 of the battery device 12 is fitted into the rotation support portion 55 of the charger 50. As shown in FIG. 17, the battery device 12 is mounted downward from the near side to be in the above-mentioned disengagement posture (see FIGS. 17 and 18). Thereafter, the upper side of the battery device 12 is rotated backward about the rotation support shaft 24, so that the battery device 12 assumes a connection posture (see FIGS. 13 to 16), and the connection terminal 51 of the charger 50. The connection terminal 22 of the battery device 12 is connected to and charging is started.

  Further, when the battery device 12 is completely charged and the battery device 12 is removed from the charger 50, the battery device 12 having the connection posture as shown in FIGS. It is turned to the near side and it is set as the separation posture as shown in FIGS. By rotating the battery device 12 in this manner, the connection terminal 22 of the battery device 12 is detached from the connection terminal 51 of the charger 50. After that, the battery device 12 can be removed from the charger 50 by lifting the battery device 12 in the detached posture upward obliquely.

  Thus, when the battery device 12 is mounted on the charger 50, the timing for performing the work of placing the battery device 12 on the battery mounting portion 52 of the charger 50, and the connection terminal 22 by rotating the battery device 12; The timing for connecting 51 is different. Thereby, the operator of the battery device 12 can perform the mounting operation of the battery device 12 with a relatively small force, and the burden on the operator of the battery device 12 can be reduced, which is convenient.

  Further, when removing the battery device 12 from the charger 50, the battery device 12 in the connection posture is turned to the near side and the connection terminals 22 and 51 are separated from each other. The timing for lifting and removing is different. Thereby, the operator of the battery device 12 can perform the removal work of the battery device 12 with a relatively small force, and can reduce the burden on the operator of the battery device 12, which is convenient.

  Further, according to the above configuration, when the battery device 12 is rotated from the connection posture to the release posture, the battery device 12 comes into contact with the front support wall portion 56 of the charger 50 as a contacted portion, and the Further, there is provided a rotation restricting portion 26 that prevents further rotation and maintains the disengagement posture. As a result, the battery device 12 does not fall off from the battery mounting portion 52 of the charger 50, so that the dropped battery device does not come into contact with the floor surface and is damaged and reliability is improved.

  In the above-described embodiment, the case where the rotation restricting portion 26 has a shape protruding from the lower extending portion 16a of the battery device 12 has been described. However, the present invention is not limited to this. For example, the front support of the charger 50 is supported. When the battery device 12 is rotated from the connection posture to the disengagement posture by projecting a part of the wall portion to the front side, the projecting portion comes into contact with the extended portion 16 a of the battery device 12. It may be configured. That is, the rotation restricting portion 26 may be formed on either side of the battery device 12 and the charger 50.

  In the present embodiment, when the battery device 12 is rotated from the connection posture to the separation posture, the battery device 12 rotates on the rear surface of the support wall portion (front support wall portion) 56 of the charger 50. The front surface portion of the support shaft 24 also abuts, and by abutting at this location as well, it is possible to satisfactorily prevent the battery device 12 from falling off the charger 50. Thus, the battery device 12 can be prevented from falling off the charger 50 with a relatively simple configuration, but the configuration is not limited to this.

  Further, since the battery device 12 is disposed so that the connection posture and the disengagement posture are inclined with respect to the charger 20, the connection posture and the disengagement posture are maintained in a stable state. Can do. That is, when the connection posture or the disengagement posture is a vertical posture orthogonal to the horizontal plane, the battery device 12 becomes an unstable posture in which the battery device 12 can rotate. However, in the present embodiment, such a problem occurs. Absent.

  In addition, it is preferable that an inclination angle with respect to a vertical line perpendicular to the horizontal plane is larger than a predetermined angle (for example, 15 degrees) in any of the connection posture and the separation posture of the battery device 12. As a result, even when the place where the charger 50 is placed is slightly inclined, if the inclination angle is smaller than the predetermined angle (for example, 15 degrees), both the connection posture and the disengagement posture are inclined. Therefore, the battery device 12 can be stably held in any posture, and the reliability is improved.

  Furthermore, it is arranged so that the inclination angle of the connection posture that is orthogonal to the placement surface S on which the charger 50 is placed and that is inclined with respect to the vertical line passing through the charger 50 is larger than the inclination angle of the separation posture. Thus, when charging the charger 50, which is preferably maintained in a stable posture, the connection posture of the battery device 12 attached to the charger 50 can be held in a more stable state. In this case, the reliability is further improved.

  Moreover, according to the said structure, in the state which the remaining amount display part 19 provided in the side surface of the battery apparatus 12 displays the electric remaining amount of the battery 20 mounted the charger 50 on the horizontal mounting surface, The connection posture of the battery device 12 is inclined and arranged so as to be seen from directly above 50. Thereby, when the charger 50 is placed and charged on the floor or the like, the remaining amount of electricity of the battery 20 can be easily visually recognized not only in the lateral direction but also from above, which is convenient. Further, in the present embodiment, the remaining amount display unit 19 is disposed obliquely rearward on the side surface of the battery device 12, so that the remaining amount display unit 19 is further connected to the charger 50. It looks good from directly above, further improving convenience.

  Moreover, in this Embodiment, the shaft insertion groove which can be supported by making the battery mounting part 13 of the electric bicycle 1 fit the rotation support shaft (rotation part) 24 of the battery apparatus 12 so that rotation is possible. (Rotation support portion of the battery mounting portion 13 of the electric bicycle 1) 33 is provided. The battery device 12 is connected to the battery mounting portion 13 of the electric bicycle 1 with a connection posture in which the connection terminal 22 of the battery device 12 is connected to the connection terminal 32 of the battery mounting portion 13 of the electric bicycle 1, and The battery 1 is disposed so as to be rotatable from the connection terminal 32 of the battery mounting portion 13 of the bicycle 1 to the disengagement posture in which the connection terminal 22 of the battery device 12 is disengaged.

  With this configuration, when the battery device 12 is mounted on the battery mounting portion 13 of the electric bicycle 1 or removed from the battery mounting portion 13 of the electric bicycle 1, the battery device 12 is placed on or removed from the battery mounting portion 13 of the electric bicycle 1. The timing at which the battery device 12 is rotated and the timing at which the connection terminal 32 of the electric bicycle 1 is connected to the connection terminal 22 of the battery device 12 can be made different. Thereby, the operator of the battery device 12 can perform the work of attaching and removing the battery device 12 to / from the electric bicycle 1 with a relatively small force, and the burden on the operator of the battery device 12 can be reduced, which is convenient. is there.

  However, in this embodiment, even when the battery device 12 is put in a detached posture in order to remove the battery device 12 from the battery mounting portion 13 of the electric bicycle 1, the rotation restricting portion provided in the battery device 12 is used. 26 is not configured to abut to maintain a detached posture. That is, when removing the battery device 12 from the battery mounting portion 13 of the electric bicycle 1, it is necessary to rotate the battery device 12 from a standing connection posture to a largely inclined disengagement posture. It is not designed to hold a separation posture. That is, since the battery mounting portion 13 of the electric bicycle 1 is provided at a relatively low position, the battery device 12 is damaged even if it is dropped when the battery device 12 is detached from the battery mounting portion 13 of the electric bicycle 1. There is almost no.

  However, the present invention is not limited to this configuration, and as shown in FIGS. 20 and 21, when the battery device 12 is set in the detached posture, the contact with which the rotation restricting portion 26 comes into contact in order to maintain the detached posture. The part 27 may be provided in a part of the battery mounting part 13. As a result, when the battery device 12 is set to the separation posture, the separation posture can be maintained, and the reliability can be improved.

  In the above-described embodiment, the case where the electric vehicle is the electric bicycle 1 is described. In this case, the electric bicycle 1 adds an auxiliary driving force by a motor corresponding to a human driving force by a pedaling force. It is preferable. However, the above configuration can also be applied to a charging structure that charges a battery device of an electric bicycle that can be self-propelled only by the driving force of a motor, regardless of the pedaling force. Furthermore, the electric vehicle may be other than an electric bicycle, and can be applied to a charging structure for charging a battery device used in various electric vehicles such as an electric motorcycle, an electric vehicle, an electric lawn mower, and an electric wheelchair. It is.

1 Electric bicycle 2 Body frame (body)
9 motor 10 drive unit 12 battery device 13 battery mounting part (battery mounting part of electric bicycle)
19 Remaining display 20 Battery 22 Connection terminal (battery device connection terminal)
24 Rotating support shaft (Rotating part)
26 Rotation Restrictor 32 Connection Terminal (Electric Bicycle Connection Terminal)
33 Shaft insertion groove 50 Charger 51 Connection terminal (charger connection terminal)
52 Battery mounting part (battery mounting part of the charger)
55 Rotating Support 56 Support Wall (Front Support Wall)

Claims (6)

A battery device that is detachably attached to the electric vehicle and has a built-in battery, and a charger that has a battery mounting portion and charges the battery of the battery device;
A battery device charging structure in which connection terminals are provided on the battery device and the charger, respectively.
The battery mounting portion of the charger is provided with a rotation support portion that rotatably supports the battery device,
The battery device is provided with a rotation portion that can be fitted to the rotation support portion,
The battery device has a connection posture in which a connection terminal of the battery device is connected to a connection terminal of the charger with respect to a battery mounting portion of the charger, and the battery device from the connection terminal of the charger. The connecting terminal is disposed so as to be freely rotatable over the disengagement posture from which the connection terminal is disengaged,
When the battery device is rotated from the connection posture to the disengagement posture, the battery device abuts against the contacted portion and prevents further rotation than the disengagement posture and holds the disengagement posture. A charging structure for a battery device, characterized in that a part is provided.   The battery device charging structure according to claim 1, wherein the connection posture and the disconnection posture of the battery device are postures inclined with respect to the charger.   The inclination angle of the connection posture that is orthogonal to a mounting surface on which the charger is placed and is inclined with respect to a vertical line passing through the charger is larger than an inclination angle of the separation posture. Item 3. A charging structure for a battery device according to Item 2. A remaining amount display part for displaying the remaining amount of electricity in the battery is provided on the side of the battery device,
In a state where the charger is mounted on a horizontal mounting surface, the connection posture of the battery device is inclined and arranged so that the remaining amount display unit can be seen from directly above the charger. The charging structure of the battery device according to claim 2, wherein   2. The battery device charging structure according to claim 1, wherein the electric vehicle is an electric bicycle. The battery mounting part has a detachable battery device,
An electric vehicle in which connection terminals are provided on each of the battery device and the battery mounting portion,
The battery mounting portion is provided with a rotation support portion that rotatably supports the battery device,
The battery device is provided with a rotation portion that can be fitted to the rotation support portion,
The battery device has a connection posture in which the connection terminal of the battery device is connected to a connection terminal of the battery mounting portion with respect to the battery mounting portion, and a connection posture of the battery device from the connection terminal of the battery mounting portion. The connection terminal is disposed so as to be freely rotatable over the disengagement posture in which the connection terminal is disengaged,
When the battery device is rotated from the connection posture to the disengagement posture, the battery device abuts against the contacted portion and prevents further rotation than the disengagement posture and holds the disengagement posture. The electric vehicle characterized by the above-mentioned.

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