JP2018037210A - Battery pack and charging port unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a battery pack which can secure workability of replacement of consumables, and to provide a charging port unit.SOLUTION: A battery pack 1 includes: a housing 2 in which a battery module 3 is housed; and a charging port 6 provided at the housing 2. The charging port 6 includes: an inlet 22 having an insertion port 26 for a charge cable at an exterior part, and electrically connected with the battery module 3; a fixed plate 23 having an opening 30 into which the insertion port 26 of the inlet 22 is inserted, and detachably fixed to a wall part of the housing 2 forming the charging port 6; a jumper 24 which is fitted into the insertion port 26 of the inlet 22 protruding from the opening 30, and covers the insertion port 26; and a wire W which is provided so as to connect the jumper 24 with the fixed plate 23.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a battery pack and a charging port unit.

  As a vehicle equipped with a battery pack, for example, there is a battery-type forklift described in Patent Document 1. In the forklift described in Patent Document 1, a battery pack is housed on the lower side of the seat in the cab. On the forklift side, a charging cable used for charging the battery pack is provided. The middle portion of the charging cable is suspended from a hook provided at the upper portion of the cord storage portion, and the plug at the tip of the charging cable is stored in the recess on the cover side.

JP 2003-73099 A

  The charging port of the battery pack can take various configurations, but the inlet that becomes the insertion port of the charging cable and the jumper that is attached to the insertion port when not charging are consumables and need to be replaced periodically. is there. Moreover, when connecting a jumper and a battery pack with a wire in order to prevent the loss of a jumper, a wire can also be the object of replacement | exchange. For this reason, the technique which can ensure workability | operativity at the time of exchanging these consumables is desired.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a battery pack and a charging port unit that can ensure workability for exchanging consumables.

  A battery pack according to one aspect of the present invention includes a housing in which a battery module is accommodated, and a charging port provided in the housing, and the charging port has an insertion port for an external charging cable. An inlet that is electrically connected to the battery module, an opening through which the inlet port is inserted, and a fixing plate that is detachably fixed to the wall portion of the casing that constitutes the charging port, and protrudes from the opening A jumper that fits into the inlet of the inlet that covers the inlet, and a wire that connects the jumper and the fixing plate.

  In this battery pack, a wire is provided so as to connect the jumper and the fixed plate. For this reason, when removing a fixing plate from the wall part which comprises the charging port of a housing | casing, it becomes possible to remove an inlet and a jumper integrally from a charging port, without removing a wire from a fixing plate. Therefore, the workability of exchanging consumables can be ensured.

  A charging port unit according to one aspect of the present invention is a charging port unit disposed at a charging port of a battery module, and includes an inlet having an insertion port of an external charging cable, and an insertion port of the inlet. A fixing plate having an opening to be fitted, a jumper that fits into the insertion port of the inlet projecting from the opening and covers the insertion port, and a wire provided to connect the jumper and the fixing plate.

  In this charging port unit, a wire is provided so as to connect the jumper and the fixing plate. For this reason, the inlet and the jumper can be integrally removed from the charging port without removing the wire from the fixing plate. Therefore, the workability of exchanging consumables can be ensured.

  According to the present invention, workability for exchanging consumables can be ensured.

It is a perspective view which shows one Embodiment of the battery pack which concerns on this invention. It is a schematic sectional drawing of the battery pack shown in FIG. It is a perspective view which shows one Embodiment of the charging port unit arrange | positioned at the charging port of the battery pack shown in FIG. It is a disassembled perspective view which shows the attachment state to the housing | casing of the charging port unit shown in FIG. It is a principal part expansion perspective view which shows the structure of the charging port unit which concerns on a comparative example. It is a perspective view which shows the mode of removal of the charging port unit shown in FIG. It is a principal part expansion perspective view which shows the structure of the charging port unit which concerns on an Example. It is a perspective view which shows the mode of removal of the charging port unit shown in FIG.

  Hereinafter, preferred embodiments of a battery pack and a charging port unit according to one aspect of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a perspective view showing an embodiment of a battery pack according to the present invention. FIG. 2 is a schematic sectional view thereof. The battery pack 1 is a power storage device that is mounted as a battery of various vehicles such as forklifts, hybrid vehicles, and electric vehicles. As shown in FIGS. 1 and 2, the battery pack 1 includes a housing 2 and a plurality of battery modules 3 (see FIG. 2) housed in the housing 2.

  The housing | casing 2 is comprised by the substantially rectangular parallelepiped box shape with the metal, for example. A cover member 4 is attached to the top of the housing 2. The cover member 4 is provided with a first output terminal to which a power wire harness that supplies power from the battery pack 1 to various devices on the vehicle side is connected. The cover member 4 is provided with a second output terminal to which a communication wire harness used for information communication with various devices on the vehicle side is connected.

  A charging port 6 to which a charging cable (not shown) from an external device is connected when charging the battery pack 1 is provided on one side of the upper front portion of the housing 2. In the charging port 6, a wall portion 7 </ b> A (see FIG. 2) facing the front surface side of the housing 2, a wall portion 7 </ b> B facing one side surface side of the housing 2, and a wall portion 7 </ b> C facing the top surface side of the housing 2. As a result, the corners of the housing 2 are recessed.

  As shown in FIG. 2, the wall portion 7 </ b> A is provided with an opening 8 having a size capable of inserting an inlet 22 in a charging port unit 21 described later. Further, an ear portion 9 protruding upward is provided on the side surface side of the upper edge portion of the wall portion 7A. In addition to fixing the charging port unit 21, the ear portion 9 also serves as a guide for restricting the power wire harness and the communication wire harness wired on the top side of the housing 2 from projecting to the charging port 6 side. Function. The wall portion 7A is provided with a plurality of bolt holes 10 used for fixing a charging port unit 21 described later. In the present embodiment, bolt holes 10 and 10 provided apart from each other in the ear portion 9 and bolt holes 10 and 10 provided at both corners of the lower edge portion of the wall portion 7A are provided in a total of four locations. It has been.

  The wall 7C is inclined downward (bottom side) toward the front side. Since the wall portion 7C is inclined downward to the front side, a collision between the cable portion and the housing 2 when connecting a charging cable (not shown) from an external device to the charging port 6 is avoided. An escape area is formed.

  As shown in FIG. 2, a plurality of battery modules 3 and a junction box 11 are accommodated inside the housing 2. The battery module 3 is fixed to the inner wall of the housing 2 via a bracket, for example. The battery module 3 is a power storage module such as a lithium ion secondary battery, for example, and includes an array formed by arranging a plurality of battery cells, a restraining member that applies a restraining load in the array direction of the array, and the like. ing. Each battery module 3 in the housing 2 is connected to the junction box 11 by a harness 12.

  The junction box 11 houses a relay, a cable, a control ECU (Electronic Control Unit) that controls the battery pack 1, and the like. The junction box 11 is fixed to the inner wall of the housing 2 via a bracket, for example. The junction box 11 connects the battery module 3 and the first output terminal so that energization is possible, and connects the thermistor that monitors the temperature of each battery module 3 and the second output terminal so that communication is possible. The junction box 11 relays the electric power from each battery module 3 and the temperature information transmitted from each thermistor and sends it to the vehicle side.

  Next, the charging port unit 21 disposed in the charging port 6 will be described. FIG. 3 is a perspective view showing an embodiment of the charging port unit. FIG. 4 is an exploded perspective view showing a state where the charging port unit is attached to the housing.

  As shown in FIGS. 3 and 4, the charging port unit 21 includes an inlet 22, a fixing plate 23, and a jumper 24. The inlet 22 is a member that has an insertion port 26 (see FIG. 4) into which an external charging cable is inserted and is electrically connected to the battery module 3.

  As shown in FIG. 4, the insertion port 26 is formed in a substantially rectangular parallelepiped shape with a resin such as polypropylene. A concave portion 26a into which a terminal portion 35 of a jumper 24 to be described later is fitted is provided at a substantially central portion on the front side of the insertion port 26, and connection terminals 27A, 27B, and 27C are provided at the bottom portion of the concave portion 26a. The terminal surface of is located. The connection terminal 27A is connected to the positive side of each battery module 3 via, for example, a cable in the junction box 11, and the connection terminal 27B is connected to the negative side of each battery module 3 via the relay in the junction box 11. Connected to the negative side of the output terminal. The connection terminal 27 </ b> C is connected to the positive side of the first output terminal via a cable in the junction box 11.

  A rectangular flange 28 is provided on the proximal end side of the insertion port 26. The flange 28 is formed integrally with the main body portion of the insertion port 26 by using a resin such as polypropylene, for example. Bolt holes 29 used for fixing the inlet 22 and the fixing plate 23 are provided at the four corners of the flange 28, respectively.

  The fixing plate 23 is a member for making the charging port unit 21 into the housing 2. The fixing plate 23 is formed in the same shape as the wall portion 7 </ b> A constituting the charging port 6, for example, with a metal made of the same material as that of the housing 2. An opening 30 through which the insertion port 26 of the inlet 22 is inserted is provided at a substantially central portion of the fixing plate 23. The shape of the opening 30 is slightly smaller than the opening 8 provided in the wall portion 7A. For this reason, only the main body portion of the insertion port 26 can be inserted through the opening 30, and when the main body portion is inserted all the way into the opening 30, the flange 28 comes into contact with the back surface side of the fixing plate 23. .

  On the upper edge portion of the fixing plate 23, an ear portion 31 having substantially the same shape as the ear portion 9 of the wall portion 7A is provided so as to protrude upward. Insertion holes 32 corresponding to the bolt holes 10 formed in the wall portion 7 </ b> A are respectively provided at the ear portion 31 and the lower edge portion of the fixing plate 23. In addition, insertion holes 33 corresponding to the bolt holes 29 formed in the flange 28 of the insertion port 26 are respectively provided around the opening 30 of the fixing plate 23.

  The jumper 24 is a member that fits into the insertion port 26 of the inlet 22 protruding from the opening 30 of the fixed plate 23 and covers the insertion port 26. The jumper 24 is attached to the insertion port 26 when the battery pack 1 is not being charged, and protects the charging port 6. The jumper 24 is removed from the insertion port 26 when the battery pack 1 is charged, and allows the charging cable to be attached to the charging port 6. The jumper 24 includes, for example, a cover 34, a terminal portion 35, and a handle 36. The cover 34 is formed in a shape capable of covering the insertion port 26 of the inlet 22 with, for example, a resin such as polypropylene.

  The terminal portion 35 is a convex male terminal that can be inserted into the concave portion 26 a of the insertion port 26. The terminal portion 35 is provided with two terminal surfaces that are electrically short-circuited with each other. These terminal surfaces are connected to the connection terminal 27A and the connection terminal 27C at the bottom of the recess 26a in a state where the terminal portion 35 is inserted into the insertion port 26. That is, when the jumper 24 is inserted into the insertion port 26, the positive terminal of each battery module 3 and the positive side of the first output terminal on the housing 2 side are electrically connected.

  The handle 36 serves as a handle for the jumper 24 and is a member for manually operating the attachment / detachment of the jumper 24 with respect to the insertion port 26. The handle 36 is used for operating a latch mechanism (not shown) provided between the terminal portion 35 and the bottom of the recess 26a. After the terminal portion 35 is inserted into the insertion port 26, when the handle 36 is rotated in one direction, the jumper 24 is locked with respect to the insertion port 26. Further, when the handle 36 is rotated in the opposite direction in a state where the terminal portion 35 is inserted into the insertion port 26, the jumper 24 is unlocked with respect to the insertion port 26.

  In order to prevent the jumper 24 removed when the battery pack 1 is charged, for example, a metal wire W is attached to the jumper 24 as shown in FIG. One end portion of the wire W is fixed to the shaft portion 36 a of the handle 36 by a fixing portion 37. Further, the other end portion of the wire W is fixed to the front surface side of the fixing plate 23 by a fixing portion 37. That is, the wire W is provided so as to connect the jumper 24 and the fixing plate 23.

  The position of the fixing portion 37 on the fixing plate 23 is not particularly limited as long as the wire W does not reach the insertion port 26 when the jumper 24 is removed, but in this embodiment, for example, the ear is located above the opening 30. It is provided at the edge near the portion 31. The configuration of the fixing portion 37 is not particularly limited, but in the present embodiment, for example, the fixing portion 37 is configured by a plate-like member 38 having a region fixed to the shaft portion 36a and a region in which a hole is formed. By engaging an annular member provided at one end of the wire W with the hole, the end of the wire W can be coupled to the fixed portion 37 with a certain amount of play. Therefore, the movable range of the wire W is sufficiently ensured.

  When the charging port unit 21 is attached to the charging port 6 of the housing 2, a bolt is inserted into the bolt hole 29 formed in the flange 28 of the insertion port 26 through the insertion hole 33 provided around the opening 30 of the fixing plate 23. V1 is screwed and the inlet 22 and the fixing plate 23 are fixed. Moreover, the terminal part 35 of the jumper 24 is inserted into the insertion port 26 protruding from the opening 30 of the fixing plate 23 and locked, and the inlet 22, the fixing plate 23, and the jumper 24 are integrated.

  Next, the inlet 22 is inserted into the housing 2 through the opening 8 formed in the wall portion 7A of the charging port 6 in the housing 2, and the back surface side of the fixing plate 23 is abutted against the wall portion 7A. Then, the bolt V2 is screwed into the bolt hole 10 provided in the ear portion 9 and the lower edge portion of the wall portion 7A through the insertion hole 32 provided in the ear portion 31 and the lower edge portion of the fixing plate 23, and the charging port unit. 21 is fixed to the wall 7A. Thereby, attachment of the charging port unit 21 to the charging port 6 of the housing | casing 2 is completed. In fixing the charging port unit 21 to the wall portion 7A, it is preferable to dispose an annular seal member around the opening 8 at a position inside the bolt V2 on the back surface side of the fixing plate 23. Thereby, the charging port 6 can be hermetically sealed by the charging port unit 21.

  The charging port unit 21 can handle the inlet 22, the fixing plate 23, and the jumper 24 integrally even when the jumper 24 and the inlet 22 that are consumables are replaced. When the wire W is provided so as to connect the jumper 24 and the housing 2 as in the comparative example shown in FIG. 5, in order to remove the inlet from the charging port 6, the other end of the wire W is connected to the fixing portion 37. It is necessary to remove. For this reason, as shown in FIG. 6, there is a problem that the members are separated into the jumper 24 and the wire W, the inlet 22 and the fixing plate 23, and it is difficult to sufficiently ensure the workability of exchanging consumables.

  On the other hand, when the wire W is provided so as to connect the jumper 24 and the fixing plate 23 as in the embodiment shown in FIG. 7, the bolt V2 is removed and the fixing plate 23 is removed from the wall portion 7A as shown in FIG. It becomes possible to remove the charging port unit 21 from the charging port 6 at a time only by removing it. Accordingly, the inlet 22 and the jumper 24 can be integrally removed from the charging port 6 without removing the wire W from the fixing plate 23, so that the workability of exchanging consumables can be ensured.

  DESCRIPTION OF SYMBOLS 1 ... Battery pack, 2 ... Housing | casing, 3 ... Battery module, 6 ... Charging port, 7A ... Wall part, 21 ... Charging port unit, 22 ... Inlet, 23 ... Fixing plate, 24 ... Jumper, 26 ... Insertion port, 30 ... Opening, W ... Wire.

Claims (2)

A housing containing a battery module;
A charging port provided in the housing,
The charging port has an insertion port for an external charging cable, and an inlet electrically connected to the battery module;
A fixing plate having an opening through which the insertion port of the inlet is inserted, and being detachably fixed to a wall portion of the housing constituting the charging port;
A jumper that fits over the insertion port of the inlet protruding from the opening and covers the insertion port;
A battery pack comprising: a wire provided so as to connect the jumper and the fixing plate. A charging port unit disposed at the charging port of the battery module,
An inlet having an outlet for an external charging cable;
A fixing plate having an opening through which the insertion port of the inlet is inserted;
A jumper that fits over the insertion port of the inlet protruding from the opening and covers the insertion port;
A charging port unit comprising: a wire provided to connect the jumper and the fixing plate.

Images