JP2016002828A - Battery unit for special use vehicle and special use vehicle including the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a battery unit for a special use vehicle which achieves improvement of the assembly workability and compactification of the unit, and to provide a special use vehicle including the battery unit for the special use vehicle.SOLUTION: A battery unit 300 for a special use vehicle according to one embodiment of the invention includes: a battery body 310; a housing 370; an electronic component 350; and a support member 360. The housing 370 supports the battery body 310. The electronic component 350 is electrically connected with the battery body 310. The support member 360 is detachably fixed to the housing 370 and supports the electronic component 350.

Description

  The present invention relates to a battery unit for special-purpose automobiles having special equipment such as a mixer drum and a special-purpose automobile equipped with the same.

  For example, a mixer truck that transports ready-mixed concrete to a construction site must always rotate the mixer drum until the ready-mixed concrete is discharged, and the engine of the mixer truck is generally used as the drive source. Specifically, the rotational power of the engine is transmitted to the hydraulic pump, the pressure oil discharged from the hydraulic pump is supplied to the hydraulic motor to drive it, and the mixer drum is driven to rotate by the rotation of the hydraulic motor. . For this reason, conventional mixer trucks are environmentally friendly, such as engine noise when the construction site is in the vicinity of a residential area, exhaust gas during tunnel construction, exhaust gas and noise during idling due to traffic lights and traffic jams, etc. The problem was pointed out.

  Therefore, in recent years, a mixer vehicle that can rotate the drum even when the engine is stopped has been proposed. For example, Patent Document 1 discloses a power generation device driven by an engine, a power storage device that stores the output of the power generation device, an electric motor that is driven by electric power stored in the power storage device, and a second that is driven by the output of the electric motor. And a control device that detects the stop of the vehicle and enables the drum to rotate by driving the hydraulic motor by the electric motor and the second hydraulic pump when the engine is stopped by the operator's selection operation. A car is disclosed.

Japanese Patent Laid-Open No. 2003-301802

  When assembling a function expansion unit as described in Patent Document 1 to a special-purpose vehicle such as a mixer vehicle, it is desired to reduce the size of the unit and improve assembly workability. In particular, assembling workability of the electronic parts or the control board for the storage battery and the efficiency of the installation layout are problems.

  In view of the circumstances as described above, an object of the present invention is to provide a special-purpose vehicle battery unit capable of improving assembly workability and downsizing the unit, and a special-purpose vehicle including the same. .

To achieve the above object, a special-purpose automotive battery unit according to an aspect of the present invention includes a battery body, a housing, an electronic component, and a support member.
The housing supports the battery body.
The electronic component is electrically connected to the battery body.
The support member is detachably fixed to the housing and supports the electronic component.

  In the battery unit, the electronic component is supported by a support member configured to be detachable from the housing. For this reason, the electronic component can be assembled to the housing after being fixed to the support member. Thereby, workability | operativity can be improved compared with the case where an electronic component is assembled to a housing | casing separately. In addition, since the plurality of electronic components are collectively supported by the support member, the layout can be made more efficient, and the battery unit can be made compact.

  The use of the battery unit is not particularly limited. Typically, the battery unit is applied as a drive unit for driving special equipment of a special-purpose vehicle or an expansion unit for extending the function of the special equipment, and the battery body Constitutes the power source of these drive units or expansion units. For example, the battery unit is used as a drive unit for rotating a mixer drum during idling stop control in a mixer vehicle having an idling stop function.

  The battery unit may further include an electric device. The electrical device is disposed inside the housing and is electrically connected to the electronic component. By disposing the electric device in the same casing, the unit can be reduced in size. In addition, since the electric device is disposed in the same housing, the wiring length necessary for connection with the electronic component on the support member can be shortened.

  The electric device is typically configured by an electric motor such as an electric motor driven by electric power stored in the battery body. The electric device is not limited to a single device, and may be composed of a plurality of devices.

  The housing may include a first frame portion that supports the battery body and a second frame portion that supports the electric device. In this case, the support member is detachably fixed to the first frame portion. Thereby, an electronic component can be arrange | positioned in the vicinity of a battery main body, and a connection work with a battery main body becomes easy.

  The battery body, the support member, and the electric device may be arranged in a uniaxial direction within the housing. In this case, the battery body is disposed between the support member and the electric device. Thereby, it becomes possible to protect an electronic component from the electromagnetic noise which generate | occur | produces from an electric equipment.

A special-purpose vehicle according to an embodiment of the present invention includes a vehicle body portion and a battery unit.
The vehicle body has special equipment.
The battery unit includes a battery body, a housing, an electronic component, and a support member. The housing supports the battery body. The electronic component is electrically connected to the battery body. The support member is detachably fixed to the housing and supports the electronic component.

  A special-purpose vehicle is typically a vehicle having a special goods loading facility for transporting special goods as special equipment, such as a concrete mixer truck, an asphalt carrier car, a tank car, and a refrigerated refrigerator car. , Insulated cars, water trucks, etc. Moreover, it is a motor vehicle having special equipment for performing special work as special equipment, and includes, for example, a crane car, a pump car, a road work car, a cleaning car, an aerial work car, and the like.

  According to the present invention, it is possible to improve the assembly workability and compactness of the battery unit.

1 is a schematic side view showing a mixer truck according to an embodiment of the present invention. It is a schematic block diagram which shows the drive circuit of the mixer drum in the said mixer vehicle. It is a see-through | perspective perspective view which shows schematically the internal structure of the battery unit which concerns on one Embodiment of this invention. It is a schematic plan view of the battery unit. It is a schematic rear view of the battery unit. It is a disassembled perspective view which shows roughly the relationship between the battery main body in the said battery unit, and its peripheral component. It is a schematic perspective view of the battery unit which concerns on a comparative example.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the present embodiment, a mixer vehicle will be described as an example of the special-purpose vehicle.

  FIG. 1 is a schematic side view showing a mixer truck according to an embodiment of the present invention, and FIG. 2 is a schematic configuration diagram showing a drive circuit of a mixer drum in the mixer truck. First, the overall configuration of the mixer truck will be described.

[Overall configuration of mixer truck]
As shown in FIG. 1, the mixer truck 100 includes a mixer drum 1 that transports mortar, ready-mixed concrete, or the like (hereinafter referred to as “raw concrete”) from a ready concrete factory to a construction site. The mixer drum 1 is rotatably installed on the gantry 2 of the mixer truck 100. When the mixer truck 100 is transported, the mixer drum 100 rotates the mixer drum 1 in the normal direction and agitates the mixer with a plurality of spiral blades attached in the mixer drum 1 in order to prevent quality deterioration and condensation of the mixer. Moreover, the mixer truck 100 discharges the raw concrete in the mixer drum 1 by rotating the mixer drum 1 in the reverse direction, and supplies it to the concrete placement site.

  As shown in FIG. 2, the mixer truck 100 has a vehicle body portion 10. The vehicle body unit 10 includes a mixer drum 1, a mount 2 (see FIG. 1), an engine 3, a generator 4, a first battery 5, a first control unit 6, a cabin 7 (see FIG. 1), and the like.

  The engine 3 is a power source of the mixer vehicle 100 and is configured by an internal combustion engine such as a gasoline engine or a diesel engine. The generator 4 generates power with the rotational power of the engine and supplies the generated power to the first battery 5 and a second battery 21 described later.

  The generator 4 is not limited to one, and a plurality of generators may be provided. In this case, the first and second batteries 5 and 21 may be charged by a plurality of generators, or a generator may be assigned to each battery.

  The first battery 5 stores the output (electric power) of the generator 4 and is used as an electric power source for the electrical system in the vehicle body unit 10. The first battery 5 is, for example, a lead storage battery with a rating of 24 V in which 12 2 V unit cells are connected in series.

  The first control unit 6 is typically configured by a computer, and electrically controls electrical components of the mixer truck 100 in addition to ignition control of the engine 3.

  Further, the first control unit 6 executes an idling stop function for stopping the driving of the engine 3 under a predetermined condition when the mixer vehicle 100 stops due to a signal waiting or the like. The predetermined condition is set as appropriate, and typically, the operation state of an accelerator pedal, a brake pedal, a side brake (parking brake), or the like is referred to. The first controller 6 is configured to transmit an idling stop signal to the second drive circuit 52 when executing the idling stop function.

  In the mixer vehicle 100, it is necessary to always rotate the mixer drum 1 until the raw concrete is discharged. Therefore, the mixer vehicle 100 includes a first drive circuit 51 that operates when the engine is driven and a second drive circuit 52 that operates when the engine is stopped as a drive circuit for the mixer drum 1.

  The first drive circuit 51 uses the engine 3 of the mixer vehicle 100 as its drive source. The first drive circuit 51 transmits the rotational power of the engine 3 to the first hydraulic pump 11 via PTO (Power Take Off), and the pressure oil discharged from the first hydraulic pump 11 to the hydraulic motor 12. This is supplied and driven, and the mixer drum 1 is rotationally driven by the rotation of the hydraulic motor 12.

  The second drive circuit 52 uses the electric motor 22 as its drive source. The second drive circuit 52 drives the electric motor 22 with the discharge output of the second battery 21, and transmits the rotational power of the electric motor 22 to the second hydraulic pump 23. The second hydraulic pump 23 supplies pressure oil to the hydraulic motor 12 to drive it, and the mixer drum 1 is driven to rotate by the rotation of the hydraulic motor 12.

(First drive circuit)
The first drive circuit 51 includes a first hydraulic pump 11, a hydraulic motor 12, and a first control valve 13. The first control valve 13 is disposed between the first hydraulic pump 11 and the hydraulic motor 12, and a hydraulic circuit 14 is configured between the hydraulic motor 12 and the first control valve 13.

  The first hydraulic pump 11 is driven by the power of the engine 3 and supplies pressure oil to the hydraulic motor 12. The hydraulic motor 12 rotates the mixer drum 1 upon receiving pressure oil supplied from the first hydraulic pump 11.

  The first control valve 13 switches the supply of pressure oil from the first hydraulic pump 11 to the hydraulic circuit 14 and the cutoff thereof, and the supply direction of the pressure oil in the hydraulic circuit 14. The first control valve 13 is configured by a three-position four-port electromagnetic switching valve having an A position, a B position, and a C position, and each position is a control signal transmitted from the first control unit 6. It is switched based on.

  Specifically, the first control valve 13 is switched to the A position when the mixer drum 1 is rotated in the forward direction, and is switched to the C position when the mixer drum is rotated in the reverse direction. The first control valve 13 is switched to the B position when the supply of pressure oil from the first hydraulic pump 11 to the hydraulic motor 12 is shut off.

  Although not shown, the hydraulic circuit 14 may be provided with a relief valve that opens when a hydraulic pressure higher than a predetermined level is generated, a check valve that regulates the pressure oil supply direction, and the like at appropriate positions. Although not shown, a speed reducer may be installed between the hydraulic motor 12 and the mixer drum 1.

(Second drive circuit)
The second drive circuit 52 includes the second battery 21, the electric motor 22, the second hydraulic pump 23, the second control valve 24, and the second control unit 25.

  A part of the second drive circuit 52 has a single unit structure as will be described later. The second drive circuit 52 is installed at an appropriate position on the gantry 2, for example, between the cabin 7 and the hydraulic motor 12 as shown in FIG. 1.

  The second battery 21 is composed of a storage battery that stores the output (electric power) of the generator 4 and is used as a power source of the electric motor 22. The second battery 21 is not particularly limited as long as it is a chargeable / dischargeable secondary battery. In the present embodiment, a lithium ion battery having a rating of 25.9 V in which seven 3.7 V unit cells are connected in series is used. It is done.

  The electric motor 22 is driven by the output of the second battery 21, and is constituted by a direct current (DC) motor, for example. The electric motor 22 is driven by the output of the second battery 21 whose discharge is controlled by the second control unit 25 when the second control unit 25 receives the idling stop signal.

  The second hydraulic pump 23 is driven by the electric motor 22. The second hydraulic pump 23 sucks the hydraulic oil stored in the tank 26 and supplies pressure oil to the hydraulic circuit 14. The amount of pressure oil discharged from the second hydraulic pump 23 is controlled by the output (rotation speed) of the electric motor 22. The second hydraulic pump 23 circulates the pressure oil in the hydraulic circuit 14 in the direction in which the hydraulic motor 12 is rotated in the forward direction.

  The second control valve 24 is disposed between the second hydraulic pump 23 and the hydraulic circuit 14. The second control valve 24 switches between supplying and shutting off the pressure oil from the second hydraulic pump 23 to the hydraulic circuit 14. The second control valve 24 is constituted by a two-position four-port electromagnetic switching valve having a D position and an E position, and each position is switched based on a control signal transmitted from the second control unit 25. .

  Specifically, the second control valve 24 is switched to the D position when the engine 3 is driven, and shuts off the second hydraulic pump 23 and the hydraulic circuit 14. On the other hand, the second control valve 24 is configured to be switched to the E position when the second control unit 25 receives the idling stop signal. At the E position, the second hydraulic pump 23 and the hydraulic circuit 14 are connected to each other, and the pressure oil is circulated between the hydraulic circuit 14 and the tank 26 in a direction in which the hydraulic motor 12 is rotated in the forward direction.

  When the second control unit 25 receives the idling stop signal from the first control unit 6, the second control unit 25 supplies the electric power stored in the second battery 21 to the electric motor 22, and sets the second control valve 24. It is configured to switch from the D position to the E position.

[Battery unit]
Next, details of the battery unit according to the present embodiment will be described. In the present embodiment, the battery unit constitutes a drive unit that constitutes a part of the second drive circuit 52.

  3 to 5 show the internal configuration of the battery unit 300 of the present embodiment. FIG. 3 is a transparent perspective view seen from the front of the mixer truck 100, FIG. 4 is a plan view, and FIG. It is the rear view seen from back. In each figure, an X axis, a Y axis, and a Z direction are three axis directions orthogonal to each other, and indicate a front-rear direction, a width direction, and a height direction of the mixer vehicle 100, respectively.

  The battery unit 300 includes a battery main body 310, an electric motor 320, a pump / valve device 340, a plurality of electronic components 350 including a control board 351, a support member 360, and a casing 370 that accommodates them. .

  Here, the battery main body 310 and the electric motor 320 correspond to the second battery 21 and the electric motor 22 in FIG. 2, respectively. The pump / valve device 340 has a structure in which the second hydraulic pump 23 and the second control valve 24 in FIG. 2 are unitized. The control board 351 corresponds to the second control unit 25. The electric motor 320 and the pump / valve device 340 correspond to an “electric device” electrically connected to the control board 351.

  The casing 370 is installed on the gantry 2 in the vehicle body unit 10, and is installed between the cabin 7 and the hydraulic motor 12 in the present embodiment. The housing 370 is configured by a substantially rectangular parallelepiped plastic case or metal case having a longitudinal direction in the Y-axis direction, and is fixed on the gantry 2 via a plurality of bolts. The housing 370 has a divided structure of a lower case and an upper case, and only the lower case is shown in FIGS.

  The battery body 310, the electric motor 320, and the pump device / valve device 340 are arranged in that order in the Y-axis direction inside the housing 370.

  The casing 370 includes a first frame portion 371 that supports the battery main body 310 and a second frame portion 372 that supports the electric motor 320 and the pump device / valve device 340 in common.

  FIG. 6 is an exploded perspective view schematically showing the relationship between the battery body 310 and its peripheral components.

  The battery body 310 has a rectangular parallelepiped shape. The first frame portion 371 has a plurality of projecting pieces 371A, 371B, 371C, 371D provided corresponding to the four corners of the bottom of the battery body 310. The projecting pieces 371A and 371B are arranged on the electric motor 320 side, and the projecting pieces 371C and 371D are arranged on the side opposite to the electric motor 320. Each of the projecting pieces 371A to 371D is formed by bending approximately 90 ° around the height direction (Z-axis direction), and is configured so that the battery body 310 can be positioned in the XY plane.

  In the present embodiment, the protruding pieces 371C and 371D are formed higher than the protruding pieces 371A and 371B, and the height thereof is equal to or higher than that of the support member 360 that supports the electronic component 350. The height of the protruding pieces 371C and 371D is not limited to the above example, and may be formed at a height equivalent to the protruding pieces 371A and 371B. The support member 360 is detachably fixed to the protruding pieces 371C and 371D via appropriate fasteners such as screws, bolts, and clamp members, for example.

  The support member 360 supports a plurality of electronic components 350 including the control board 351 and is configured to be detachable from the first frame portion 371. In the present embodiment, the support member 360 is configured by a rectangular plate-like member that is larger than the control board 351, but the size, shape, and the like are not limited thereto. The support member 360 is typically formed of a metal plate, but is not limited thereto, and may be a resin substrate, a ceramic substrate, or the like. The support member 360 may be formed of a circuit board that is electrically connected to these electronic components 350.

  The plurality of electronic components 350 includes a control board 351 and a relay component 352.

  The control board 351 is equipped with, for example, IC parts constituting the controller (computer), communication elements, power conversion elements, etc., charge amount (SOC) detection elements of the battery body 310, electrical / electronic parts such as connectors, and the like. Circuit board. The control board 351 mainly adjusts the output of the battery main body 310 to drive the electric motor 320 when the mixer vehicle is idling stopped, and outputs a flow path switching command to the valve device 340.

  The relay component 352 is configured by an electrical component such as an electromagnetic relay circuit or a contactor, for example. Instead of or in addition to the relay component 352, various electronic components such as a light-emitting device and a communication device may be included.

  As shown in FIG. 4, the second frame portion 372 of the housing 370 is formed in a frame shape. The electric motor 320 is fixed to one side surface of the second frame portion 372, and its output shaft (rotating shaft) passes through the side surface and is connected to the coupler 330. The pump / valve device 340 is fixed to the other side surface of the second frame portion 372, and its input shaft (pump drive shaft) passes through the side surface and is connected to the coupler 330. The coupler 330 is configured by an appropriate rotation transmission mechanism that transmits the rotational power of the electric motor 320 to the pump / valve device 340. The outlet passage 341 (FIG. 4) of the pump / valve device 340 communicates with the hydraulic circuit 14 (FIG. 2) via a bracket 373 fixed to the outer surface of the housing 370.

  As shown in FIGS. 3 and 6, the plurality of electronic components 350 are electrically connected to the battery body 310, the electric motor 320, and the pump / valve device 340 via various wiring cables.

  For example, a motor line 381 is connected between the electric motor 320 and the terminal 351a on the control board 351, and a valve signal line 382 is connected between the pump / valve device 340 and the connector terminal 351d on the control board 351. Is done. A positive electrode line 383 is connected between the positive electrode of the battery main body 310 and one terminal 352a of the relay component 352, and a negative electrode line 384 between the other terminal 352b of the relay component 352 and the terminal 351b on the control board 351. Is connected.

  Further, a wiring 385 for monitoring the voltage of the battery body 310 is connected between the connector terminal 351e on the control board 351 and a predetermined terminal of the battery body 310, and idling is performed from the first control unit 6 (FIG. 2). A signal line 386 for transmitting a stop signal or the like is connected to the connector terminal 351d on the control board 351.

  In the battery unit 300 of the present embodiment configured as described above, the plurality of electronic components 350 are supported by a support member 360 configured to be detachable from the first frame portion 371. Therefore, it is possible to assemble the first frame portion 371 after fixing the plurality of electronic components 350 to the support member 360. Thereby, workability | operativity can be improved compared with the case where the some electronic component 350 is separately assembled to a housing | casing.

  For example, FIG. 7 shows a configuration example of a battery unit according to a comparative example. In this battery unit, a plurality of electronic components 350 such as a control board 351 and a relay component 352 are directly mounted on a frame portion 471 that supports the battery main body 310. For this reason, these electronic components 350 need to be individually mounted on the frame portion 471. In addition, the operation of individually fixing components in a limited space inside the housing is not efficient, and the wiring operation can be performed only after the components are fixed.

  On the other hand, according to the present embodiment, since the support member 360 that collectively supports the plurality of electronic components 350 is provided, the plurality of electronic components 350 are attached to the casing 370 (first assembly) via the support member 360. The frame portion 371) can be fixed together. Therefore, the assembly operation of the electronic component 350 to the housing 370 is not limited to the number of the electronic components 350, and can be performed only once, thereby greatly improving the assembly workability.

  In addition, since the plurality of electronic components 350 are collectively supported by the support member 360, the layout within the housing 370 can be made more efficient. In addition, since the battery body 310, the electric motor 320, and the pump / valve device 340 are housed in the same housing 370, and each device is electrically connected via the electronic component 350, the battery unit 300 Compactness can be realized.

  Further, the wiring work of the individual electronic components 350 can be performed not only after the electronic components 350 are fixed to the housing 370 but also before the electronic components 350 are fixed to the housing. For this reason, the flexibility in assembling the battery unit 300 is increased, and the degree of freedom in the process can be increased. In particular, since the support member 360 is fixed to the first frame portion 371 that supports the battery main body 310, a plurality of electronic components 350 can be disposed in the vicinity of the battery main body 310, whereby the electronic components 350 and the battery main body can be arranged. The connection work with 310 becomes easy.

  In addition, since the fixing operation of the individual electronic components with respect to the support member 360 can be performed separately from the assembly process of the battery unit 300, the components can be managed while being mounted on the support member 360. As a result, it is possible to reduce the component management cost, and it is possible to easily select the type of electronic component 350 and change the layout according to the specifications and characteristics of the devices such as the battery main body 310 and the electric motor 22.

  In addition, since the support member 360 is configured to be attachable to and detachable from the housing 370, the electronic component 350 can be easily replaced even if some trouble occurs in a part of the electronic component 350.

  Furthermore, in this embodiment, since the battery main body 310 is interposed between the support member 360 that supports the plurality of electronic components 350 and the electric motor 22, each electronic component 350 is generated from electromagnetic noise generated when the electric motor 22 is driven. Thus, malfunction of the component can be prevented, and stable operation of the battery unit 300 can be ensured.

  The embodiment of the present invention has been described above, but the present invention is not limited to the above-described embodiment, and it is needless to say that various modifications can be made without departing from the gist of the present invention.

  For example, in the above embodiment, the support member 360 that supports the plurality of electronic components 350 is fixed to the first frame portion 371 of the housing 370. However, the present invention is not limited to this, and the inner peripheral surface or upper portion of the housing 370 is not limited thereto. You may fix to appropriate positions, such as a case.

  Further, the positional relationship of the control board 351, the relay component 352, and the like with respect to the support member 360 is not particularly limited, and can be set as appropriate in consideration of the wiring workability, the fixed position to the housing, and the like. For example, in order to facilitate wiring connection work, a relatively large component among the plurality of electronic components may be arranged on the upper side of the support substrate. On the other hand, in order to stably fix the support substrate, a relatively heavy component among the plurality of electronic components may be disposed on the lower side of the support substrate (the bottom side of the housing).

  Further, in the above embodiment, the example in which the battery unit is applied to a drive unit of a mixer drum in a mixer car has been described. However, the present invention is not limited to this, and in other special-purpose automobiles such as a drive unit of a refrigeration circuit in a refrigerator car The present invention can be applied to a drive unit or an expansion unit of special equipment.

DESCRIPTION OF SYMBOLS 1 ... Mixer drum 51 ... 1st drive circuit 52 ... 2nd drive circuit 100 ... Mixer vehicle 300 ... Battery unit 310 ... Battery main body 320 ... Electric motor 340 ... Pump / valve device 350 ... Electronic component 351 ... Control board 360 ... Support Member 370 ... Case 371 ... First frame portion 372 ... Second frame portion

Claims (6)

A battery body;
A housing that supports the battery body;
An electronic component electrically connected to the battery body;
A special purpose automotive battery unit comprising: a support member that is detachably fixed to the housing and supports the electronic component. The battery unit for special applications according to claim 1,
A special-purpose automotive battery unit further comprising an electrical device disposed inside the housing and electrically connected to the electronic component. The special purpose automotive battery unit according to claim 2,
The housing includes a first frame portion that supports the battery body;
A second frame portion that supports the electrical device;
The support member is detachably fixed to the first frame part. The special purpose automotive battery unit according to claim 2 or 3,
The battery main body, the support member, and the electric device are each arranged in a uniaxial direction inside the casing,
The battery main body is disposed between the support member and the electric device. It is the battery unit for special purpose vehicles as described in any one of Claims 2-4,
The electric device includes an electric motor. A vehicle body having special equipment;
A battery main body, an electronic component electrically connected to the battery main body, an electric device electrically connected to the electronic component and capable of driving the special equipment, and the battery main body installed in the vehicle body And a battery unit comprising: a housing that supports the electrical device; and a support member that is detachably fixed to the housing and supports the electronic component.

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