JP2013145725A - Battery pack holder, battery pack, and power supply unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a battery pack holder which improves the productivity of a power supply unit having a stack.SOLUTION: A battery pack holder 410 includes: a pair of holding plates 411R and 411L sandwiching both arrangement direction end surfaces of multiple electric cells aligned as a stack; and a first beam part 417 which connects edge ends of the pair of holding plates 411R and 411L and has beam members 417a and 417b. The battery pack holder 410 is used as a single unit or is coupled to all of or a part of a second beam member or a third beam member to be used.

Description

  The present invention relates to an assembled battery holder for holding an assembled battery composed of, for example, a plurality of stacked secondary batteries, and an assembled battery and a power supply device using the same.

  Secondary batteries are widely used as power sources for electronic devices such as mobile phones and IT devices, as well as for replacing primary batteries. In particular, non-aqueous electrolyte secondary batteries represented by lithium ion batteries have a high energy density, and are therefore being applied to electric vehicles and large industrial electric equipment. In order to obtain this, it is also practiced to stack one non-aqueous electrolyte secondary battery, which is a single battery, to form one assembled battery.

  The secondary battery is repeatedly charged and discharged, whereby the internal electrolyte is decomposed and vaporized, thereby expanding and deforming the casing. In particular, in the assembled battery stack, in order to suppress the deformation of the casing, for example, as shown in Patent Document 1, a restraining plate is disposed at both ends of the stack to sandwich the stack, and the plates are connected to each other with bolts or the like. A technique in which deformation is suppressed by connecting and fastening the plates and pressing the stack between the plates is widely used (see, for example, Patent Document 1 and FIG. 7).

JP 2008-243574 A

  The assembled battery according to the conventional technique is as described above. However, the conventional technique has the following problems. That is, it is necessary to align the assembled battery before the assembled battery is sandwiched between the plates, but in order to secure the alignment of the assembled battery and the position of the restraining plate, bolt, etc. Careful skill was required and the manufacturing process was complicated.

  As described above, in the power supply device such as the assembled battery according to the conventional technique, there is a problem that the assembly of the stack is a complicated process and the productivity is lowered.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide an assembled battery holder that improves the productivity of the assembled battery with a simple configuration, and an assembled battery and a power supply device using the same. .

In order to achieve the above object, the first aspect of the present invention provides:
A pair of sandwiching plates sandwiching both end surfaces of the plurality of arranged single cells in the arrangement direction;
A first beam member connecting the edges of the pair of sandwiching plates;
This is an assembled battery holder.

The second aspect of the present invention is
A second beam member detachably connected to each edge of the pair of sandwiching plates;
The first beam member and the second beam member do not face each other on the basis of the holding plate,
It is an assembled battery holder of the 1st side of the present invention.

The third aspect of the present invention is
The shape of the first beam member and the shape of the second beam member are flat plates.
Moreover, it is the assembled battery holder of the 2nd side surface of this invention.

The fourth aspect of the present invention is
A third beam member detachably connected to each edge of the pair of sandwiching plates;
The second beam member and the third beam member face each other on the basis of the holding plate,
The space surrounded by the second beam member, the third beam member, and the pair of holding plates has a size that can accommodate the unit cell.
It is an assembled battery holder according to any one of the first to third aspects of the present invention.

The fifth aspect of the present invention is
The pair of sandwiching plates and the first beam member are formed as different portions of one bent metal plate,
It is an assembled battery holder according to any one of the first to fourth aspects of the present invention.

The sixth aspect of the present invention is
At least one of the first to third beam members has irregularities formed on the surface thereof,
It is an assembled battery holder according to any one of the first to fifth aspects of the present invention.

The seventh aspect of the present invention is
The unevenness has a shape in which a longitudinal direction is formed along the extending direction of the beam member.
Moreover, it is the assembled battery holder of the 6th side surface of this invention.

The eighth aspect of the present invention is
Multiple cells,
An assembled battery holder according to any one of the first to seventh aspects of the present invention;
Fastening members sandwiched between the pair of sandwiching plates of the assembled battery holder;
The plurality of single cells arranged in a space surrounded by at least the first beam member, the pair of sandwiching plates and the fastening member are housed,
The fastening member and the pair of sandwiching plates are fixed,
It is an assembled battery.

The ninth aspect of the present invention is
An assembled battery according to an eighth aspect of the present invention;
A resin storage container having a lid and / or a container main body for storing the assembled battery,
It is a power supply device.

  According to the present invention as described above, it is possible to increase the productivity of the power supply device having a stack.

The perspective view which shows the structure of the power supply device which concerns on each embodiment of this invention. The perspective view for demonstrating the structure of the power supply device which concerns on each embodiment of this invention The perspective view which shows the structure of the power supply device which concerns on each embodiment of this invention. The perspective view which shows the structure of the power supply device which concerns on each embodiment of this invention. The perspective view which shows the structure of the power supply device which concerns on each embodiment of this invention. The perspective view which shows the structure of the assembled battery holder which concerns on each embodiment of this invention. The exploded perspective view which shows the structure of the assembled battery holder which concerns on each embodiment of this invention The perspective view which shows the structure of the assembled battery holder which concerns on each embodiment of this invention. The perspective view for demonstrating the assembled battery holder which concerns on each embodiment of this invention (A) The perspective view for demonstrating the assembled battery holder which concerns on each embodiment of this invention (b) The perspective view for demonstrating the assembled battery holder concerning each embodiment of this invention The perspective view for demonstrating the structure of the assembled battery holder which concerns on each embodiment of this invention. The perspective view which shows the structure of the assembled battery holder which concerns on each embodiment of this invention. The perspective view for demonstrating the structure of the assembled battery which concerns on each embodiment of this invention The perspective view for demonstrating the structure of the assembled battery which concerns on each embodiment of this invention The perspective view for demonstrating the structure of the assembled battery which concerns on each embodiment of this invention The perspective view which shows the structure of the assembled battery which concerns on each embodiment of this invention. (A) The perspective view which shows the structure of the fastening member of the assembled battery which concerns on each embodiment of this invention (b) The perspective view which shows the structure of the fastening member of the assembled battery which concerns on each embodiment of this invention (A) The perspective view which shows the other structural example of the fastening member of the assembled battery which concerns on each embodiment of this invention (b) The other structural example of the fastening member of the assembled battery which concerns on each embodiment of this invention is shown Perspective view The perspective view for demonstrating the structure of the power supply device which concerns on each embodiment of this invention The perspective view for demonstrating the structure of the power supply device which concerns on each embodiment of this invention The disassembled perspective view which shows the structure of the control circuit of the power supply device which concerns on each embodiment of this invention The disassembled perspective view which shows the structure of the relay circuit of the power supply device which concerns on each embodiment of this invention. (A) Schematic diagram for explaining a power supply device according to each embodiment of the present invention (b) Schematic diagram for explaining a power supply device according to each embodiment of the present invention (c) Each embodiment of the present invention Schematic diagram for explaining the power supply device according to the embodiment The perspective view for demonstrating the structure of the power supply device which concerns on each embodiment of this invention The perspective view for demonstrating the structure of the container main body of the power supply device which concerns on each embodiment of this invention. The perspective view for demonstrating the structure of the container main body of the power supply device which concerns on each embodiment of this invention. The perspective view for demonstrating the structure of the power supply device which concerns on each embodiment of this invention The perspective view for demonstrating the structure of the power supply device which concerns on each embodiment of this invention The principal part top view for demonstrating the structure of the positive electrode terminal vicinity of the power supply device which concerns on each embodiment of this invention The principal part top view for demonstrating the structure of the negative electrode terminal vicinity of the power supply device which concerns on each embodiment of this invention The principal part perspective view for demonstrating the structure of the positive electrode terminal vicinity of the power supply device which concerns on each embodiment of this invention. The principal part perspective view for demonstrating the structure of the negative electrode terminal vicinity of the power supply device which concerns on each embodiment of this invention The exploded perspective view of the power unit concerning each embodiment of the present invention

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view showing a configuration of a power supply device 1 according to each embodiment of the present invention, and FIG. 2 is a perspective view showing the inside thereof.

  As shown in FIG. 1, the power supply device 1 includes an outer hexahedral storage container composed of a synthetic resin container body 2 such as polypropylene and a lid 3, and is exposed on the upper surface 3 x of the lid 3. It has a positive electrode terminal 3a and a negative electrode terminal 3b for connection to an external load (not shown). Further, as shown in FIG. 2, the power supply device 1 stores the power supply device body 4 inside the storage container, and the power supply device body 4 is inserted into a through hole 210 opened in the bottom surface of the container body 2. It is fixed to the container body 2 by bolts 211.

  Next, FIG. 3 is a perspective view of the power supply device body 4 as viewed from the right side, and FIG. 4 is a perspective view of the power supply device body 4 as viewed from the left side. However, in the power supply main body 4, the surface on which electrode terminals to be described later are arranged is the front.

  As shown in FIGS. 3 and 4, the power supply device body 4 includes a stack 5 composed of a plurality of single cells 50 arranged with the surfaces on which the positive and negative electrode terminals 510 are provided, and charging / discharging of the power supply device body 4. Is mainly composed of a control circuit 6 that controls charging and discharging and a relay circuit 7 that controls conduction of charging / discharging of the power supply device body 4.

  The plurality of unit cells 50 have a metal exterior with a rectangular prism with the surface on which the electrode terminal 510 is provided and the opposing surfaces as upper and lower bottom surfaces. A stack 5 arranged in one horizontal row and four vertical columns is formed so that a major surface of each side surface is a major surface and the major surfaces face each other. In the stack 5, each unit cell 50 is laid down so that the upper surface of the unit cell 50 is on the front surface of the stack 5, and the front and back surfaces (longitudinal side surfaces) of the unit cell 50 are on the left and right side surfaces of the stack 5. The left and right side surfaces (side surfaces in the short direction) of the battery 50 correspond to the top surface and the bottom surface of the stack 5, respectively.

  In addition, the plurality of single cells 50 constituting the stack 5 are connected to each other by the bus bars 520 made of copper, aluminum, alloys thereof, or other conductive metals among the electrode terminals 510 included in each of the plurality of unit cells 50. Thereby, the plurality of single cells 50 are connected in series, and the stack 5 as a whole forms a high-voltage battery. In particular, among the electrode terminals 511 of the cells 50 located at both ends of the array, those not connected by the bus bar 520 correspond to the positive electrode terminal 511a and the negative electrode terminal 511b in the stack 5, respectively.

  Further, the stack 5 holds the arrangement state of the cells 50 by the restraining means. As shown in FIGS. 3 and 4, the restraining means includes a pair of holding plates arranged so as to further sandwich the pair of main surfaces located on the outermost side of the column formed by the plurality of arranged unit cells 50. The assembled battery holder 410, the second beam member 420 located on the bottom surface of the stack 5, the third beam member 430 located on the top surface of the stack 5, and the front surface of the stack 5, and the assembled battery holder 410. The fastening member 440 is sandwiched between the pair of sandwiching plates.

  Further, the pair of sandwiching plates of the assembled battery holder 410 are connected to the second beam member 420 at their lower ends as shown in FIG. 5, and at their upper ends as shown in FIGS. Connected to the third beam member 430. Note that through holes 422 are opened at both ends of the second beam member 420, and the bolts 221 shown in FIG. 2 are fastened to the second beam member 420 via the through holes 422.

  Further, the pair of sandwiching plates of the assembled battery holder 410 is connected to the first beam member on the back surface of the stack 5 (not shown). The configuration of the assembled battery holder 410 including the first beam member will be described in detail later.

  Next, as shown in FIG. 3, the control circuit 6 is provided on the right side surface of the power supply device body 4, and is electrically connected to the negative electrode terminal 511 b of the stack 5 via the connection member 610. As shown in FIG. 4, the relay circuit 7 is provided on the left side surface of the power supply device body 4, and is electrically connected to the positive electrode terminal 511 a of the stack 5 via the connection member 710.

  Further, as shown in FIGS. 4 and 5, a discharge end 441 is formed at the left end of the fastening member 440, and a discharge pipe 442 made of synthetic resin is connected to the discharge end 441. The configurations of the discharge end 441 and the discharge pipe 442 will be described in detail later.

  In the power supply device 1 having the above configuration, since the outer shape of the stack 5 is held by the restraining means in the power supply device main body 4, the storage container including the container main body 2 and the lid portion 3 holds the shape of the stack 5. Therefore, it is not necessary to have a structure having mechanical strength. Therefore, the weight of the power supply device can be reduced by making the container body from a synthetic resin.

  Further, the outer shape of the container main body is easy to process, and it becomes possible to conform to the standard of an existing storage battery. In particular, by creating a lead-acid battery that has the same shape as that of a lead-acid battery that has conventionally used a synthetic resin casing, the existing product can be replaced with the power supply device of the present invention, and a lead-free in-vehicle battery can be easily realized. Is possible. The standard of the existing storage battery may be adapted to the Japanese Industrial Standard and other international industrial standards, but by adapting to the German Industrial Standard (DIN standard), a storage battery suitable for in-vehicle devices can be realized. .

  Hereinafter, each embodiment of the present invention corresponding to each part which constitutes power supply device 1 mentioned above is described along the assembly process of power supply device 1.

(Embodiment 1)
The first embodiment of the present invention is characterized by an assembled battery holder that constitutes an assembled battery included in the power supply device body 4 of the power supply device 1.

  FIG. 6 is a perspective view showing the configuration of the assembled battery holder according to Embodiment 1 of the present invention. As shown in FIG. 6, the assembled battery holder 410 connects the edges of the pair of opposing rectangular holding plates 411R and 411L and the holding plates 411R and 411L as described above. And a first beam member 417 having a U-shaped outer shape as viewed from above. The assembled battery holder 410 is created by pressing a single steel plate. Therefore, the sandwiching plates 411R and 411L and the first beam member 417 are formed as different portions of the steel plates bent at a right angle.

  Hereinafter, each part will be described. The sandwiching plate 411R includes a tab 414 that is an edge located on the upper surface side of the power supply device body 4 and protrudes on a surface parallel to the upper surface of the stack 5, and the tab 414 has a through hole 414a. Is open.

  In addition, the holding plate 411R includes a tab 411a formed on the edge located on the bottom surface side of the power supply device body 4 so as to protrude on a surface parallel to the top surface of the stack 5, and on the tab 411a. A nut 411a1 communicating with the through hole 422 shown in FIG. 5 is fixed. Furthermore, it has a hook-shaped hook 411b extending below the power supply main body 4 adjacent to the tab 411a. The tabs 414 and 411a and the hook 411b are also provided on the holding plate 411L.

  Further, a tab 412a is formed so as to protrude from an edge of the holding plate 411R located on the front side of the power supply device main body 4, and a pair of through holes 413a arranged in a column are opened in the tab 412a. On the other hand, a tab 412b is also formed at the edge of the holding plate 411L so as to face the tab 412a, and a through hole 413b is opened in the tab 412b. Note that the tab 412a has a larger area than the tab 412b, and thus the tab 412a faces only a part of the tab 413b.

  Further, through holes 415a and 415b are opened on the main surface of the holding plate 411R and adjacent to the edge near the top surface of the power supply device main body 4, and the power supply device main body is on the main surface. Through holes 415c and 415d are opened at positions adjacent to the edge of the 4 near the bottom surface. Further, the through holes 415 b and 415 d are shifted toward the front surface of the power supply device body 4, and the through holes 415 d are shifted toward the back surface of the power supply device body 4.

  Similarly, through holes 416a and 416b are opened on the main surface of the holding plate 411L and adjacent to the edge near the upper surface of the power supply device body 4, and the tab 412b is formed on the main surface. A through-hole 416d is opened at a position adjacent to the close edge, and a through-hole 416c is opened at a position adjacent to the root of the first beam member 417.

  Next, the first beam member 417 is composed of a plate-like beam member 417a provided near the upper surface of the power supply device body 4 and a plate-like beam member 417b provided near the bottom surface, and extends to the surface thereof. Oval convex portions 417a1 and 417b1 are formed along the direction, respectively. Note that the convex portions 417a1 and 417b1 are formed by rolling a steel plate, and therefore, the back side (not shown) is a concave portion as an inverted shape.

  A tab 418 is formed so as to protrude from the center of the beam member 417a and parallel to the upper surface of the stack 5, and a through hole 418a is opened in the tab 418.

  As shown in FIG. 7, the assembled battery holder 410 having the above configuration is further combined with the second beam member 420 on the bottom surface side.

  The second beam member 420 has tabs 423 facing the tabs 411a of the assembled battery holder 410 at both ends, and the through holes 422 communicating with the nuts 411a1 described above are opened on the tabs 423. . On the tab 423, a slit 424 corresponding to the hook 411b of the assembled battery holder 410 is opened.

  Further, on the surface of the main surface 421 of the second beam member 420, an oval concave portion 421a parallel to the convex portions 417a1 and 417b1 of the first beam member 417 is formed. Since the concave portion 421a is also formed by rolling the steel plate, the back surface shown in FIG. 5 is raised from the surface as a convex portion as an inverted shape.

  The combination of the assembled battery holder 410 and the second beam member 420 is performed as follows. That is, the slit 424 of the second beam member 420 is inserted into the hook 411b of the assembled battery holder 410, and the tab 411a and the tab 423 are slid so that the nut 411a1 and the through hole 422 are aligned. As a result, the key portion of the hook 411b is fitted around the slit 424, and the connection between the assembled battery holder 410 and the second beam member 420 is completed. Here, the angle formed by the adjacent first beam member 417 and the second beam member 420 is a right angle. As shown in FIG. 8, the assembled battery holder 460 formed by combining the assembled battery holder 410 and the second beam member 420 includes a pair of holding plates 411R and 411L, a first beam member 417, and a first beam member 417. And the first beam member 417 and the second beam member 420 are connected to the adjacent edges of the holding plates 411R and 411L. , And has a hexahedron-shaped outer shape with two adjacent surfaces opened.

  By arranging the cells 50 on the inner wall of the assembled battery holder 460, the stack 5 is configured as shown in FIG. In addition to the positive and negative electrode terminals 510, a safety valve 530 located between the terminals is provided on the upper surface 51 of the unit cell 50 constituting the front surface of the stack 5.

  Here, FIGS. 10A and 10B show the arrangement of the unit cells 50 in the assembled battery holder 460. FIG. As shown in FIG. 10A, the cell 50 includes an assembled battery holder 460 such that one of the side surfaces 52 faces the second beam member 420 and the bottom surface faces the first beam member 417. Placed inside. As a result, the entire upper surface 51 provided with the electrode terminals 510 is exposed as the side surface of the stack 5, and the other of the side surfaces 52 is exposed as the upper surface of the stack 5.

  Referring to FIG. 9 again, when the cells 50 are placed to be arranged, a pair of holding plates 411R and 411L are located downward (in the figure, in the direction along the arrangement direction (X direction in the figure)). A second beam member 420 is provided in the Y direction), and a first beam member 417 is provided in the depth direction (Z direction in the drawing). By these members, the movement and posture of the unit cell 50 are regulated in any of three directions orthogonal to each other in the space. Therefore, by setting the interval between the pair of sandwiching plates 411R and 411L according to the size and the number of arrangement of the unit cells 50, the assembled battery holder 460 can easily temporarily fix the unit cells 50, The creation work of the stack 5 can be simplified.

  In addition, an elastic buffer material 5a made of, for example, silicon rubber is inserted between the single cells 50 constituting the stack 5, and excessive stress is applied to the single cells 50 by fastening the single cells 50 described later. Is prevented from being added. The buffer material 5a has a function of adjusting the lateral width of the stack 5 by making the thickness individually different or by making the number of inserted sheets different. As a result, tolerances and errors of the assembled battery holder 460 or the single battery 50 are absorbed, and the stack 5 can be stably held in the assembled battery holder 460.

  Next, as shown in FIG. 11, a third beam member 430 is attached to the assembled battery holder 460 in a state in which the stack 5 is stored, on the upper surface side of the stack 5.

  The third beam member 430 is a plate-like member having tabs 431 facing the tabs 414 of the assembled battery holder 460 at both ends, and through holes 432 are opened on the tabs 423. In addition, on the surface of the third beam member 430, an elliptical convex portion 430a is formed as in the first beam member 417 and the second beam member 420. Since the convex part 430a is also formed by rolling a steel plate, its back surface shown in FIG. 11 is a concave part as an inverted shape.

  The third beam member 430 and the assembled battery holder 460 are coupled by overlapping the tab 432 and the tab 414 and fastening the bolt 433 through the through holes 432 and 414a. A nut coaxial with the through hole 414a is fixed to the back surface (not shown) of the tab 414, and the bolt 433 is fastened thereby.

  Here, as shown in FIG. 12, the fixed position of the third beam member 430 is the upper edge of the pair of holding plates 414R and 414L, and the fixed position of the second beam member 420 is the pair of holding pins. This is the lower edge of the plates 414R and 414L. That is, the second beam member 420 and the third beam member 420 face each other, and the stack 5 is sandwiched therebetween.

  Thereby, as for the cell 50 which comprises the stack 5, all surfaces other than the upper surface 51 are covered with each part of an assembled battery holder, and directions other than the linear direction (Z-axis direction in a figure) which goes to the upper surface 51 from a bottom face Movement in is regulated. Therefore, the posture of the stack 5 can be changed to 360 ° around the Y axis or Z axis in the drawing, and the posture can be changed 180 ° along the Y axis + direction even around the X axis in the drawing. Can be handled freely. In particular, the upper surface 51, the back surface, and the sandwiching plates 411R and 411L of the unit cell 5, which are the side surfaces of the stack 5, can be moved to the upper surface of the stack 5, and attachment work of each member described later can be easily performed. It becomes.

  As described above, according to the present embodiment, the assembled battery holder configured by sequentially assembling the assembled battery holder 410 having the first beam member 417, the second beam member 420, and the third beam member 430. By using the tool 460, the position of the unit cells constituting the stack 5 can be regulated for each direction orthogonal to the arrangement direction. Therefore, it is possible to maintain the outer shape of the stack 5 without requiring a separate jig, and to improve the workability at the time of forming the assembled battery.

  In addition, since the outer shape of the stack can be maintained using a light and thin plate-like metal plate, it is possible to reduce the size and weight as compared with the conventional assembled battery.

  In the above configuration, the assembled battery holders 410 and 460 correspond to the assembled battery holder of the present invention, and the pair of sandwiching plates 411R and 411L correspond to the pair of sandwiching plates of the present invention. The first beam member 417 corresponds to the first beam member of the present invention, the second beam member 420 corresponds to the second beam member of the present invention, and the third beam member 430 corresponds to the present invention. This corresponds to the third beam member. Further, the convex portions 417a1 and 417b1, the concave portion 421a and the convex portion 430a correspond to the unevenness formed on the surface of the present invention.

  However, the present invention is not limited to the above configuration. The assembled battery holder of the present invention is not limited to the form of the assembled battery holder 460, but is either the assembled battery holder 410 alone or the assembled battery holder 410 and the second beam member 420 or the third beam member 430. In this configuration, the workability at the time of creating the assembled battery is ensured.

  The assembled battery holder 410 is formed by rolling and bending a single metal plate with a pair of sandwiching plates 411R and 411L and the first beam member 417. The battery holder may be realized as an aspect in which the holding plate and the first beam member are separate members and are joined by welding or the like.

  In addition, the angle formed by the adjacent first beam member 417 and the second beam member 420 is a right angle. This is because the shape of the assembled battery 50 arranged on the assembled battery holder 410 is a hexahedron. In other words, the angle formed by the first beam member 417 and the second beam member 420 may be an arbitrary angle corresponding to the outer shape of the assembled battery.

  The convex portions 417a1 and 417b1, the concave portion 421a, and the convex portion 430a all have an oval shape along the extending direction of the member, but may have an arbitrary shape or number such as a circle or a rectangle.

  In addition, the convex portions 417a1 and 417b1, the concave portion 421a and the convex portion 430a all have a convex surface on the surface of the member and a concave surface as an inverted shape on the rear surface, but the configuration may be a concave surface on the front surface and a convex surface on the rear surface. Good. As described above, when the surface of the member that contacts the inner wall of the storage container is convex, the contact area of the storage container with the container main body 2 can be reduced, and the power supply main body 4 received by the container main body 2. When the front surface is concave and the back surface is convex, the contact area between the stack 5 and the assembled battery holder can be reduced, and the stack 5 generates heat. Can alleviate the influence of other parts on the power supply main body 3. Depending on the output of the stack 5, the use of the power supply device 1, etc., it is possible to use the uneven arrangement properly, which is more preferable.

(Embodiment 2)
The second embodiment of the present invention has a feature in the configuration for fastening the stack 5 held by the assembled battery holder 460 to complete the assembled battery.

  FIG. 13 is a perspective view for explaining the configuration of the assembled battery according to the second embodiment of the present invention. As shown in FIG. 13, the harness tray 450 is stacked on the front surface of the assembled battery holder 460 that holds the stack 5.

  The harness tray 450 is a rectangular synthetic resin plate member whose outer shape corresponds to the entire front surface of the stack 5, and the electrode of the unit cell 50 provided on the front surface of the stack 5 on the surface thereof. A window 454 for exposing the terminal 510 to the outside and a window 451 for exposing the safety valve 53 to the outside are provided. Further, on the surface, between the windows 451 and 454, a fixing rod 453 for restraining and fixing a wire harness described later is provided. Here, the fixing rod 453 is an annular member provided with a gap in part when viewed from the side surface of the stack 5.

  Further, between the adjacent windows 454, there are provided a tall beam 455a that protrudes greatly from the main surface of the tray and a low beam 455b that has the same thickness as the main surface of the tray. The arrangement of the crosspieces 455b corresponds to the connection position of the unit cells 50 constituting the stack 5.

  In addition, ribs 452a and 452b that stand upright with respect to the harness tray 450 are provided at the lower end and the upper end of the window 451, respectively. The ribs 452a and 452b are arranged along the arrangement direction of the stack 5, and a pair of guides are provided. Forming.

  Next, as shown in FIG. 14, in a state where the harness tray 450 is stacked on the front surface of the stack 5, the bus bar 520 connects the electrode terminals 510 having different polarities of the adjacent unit cells 50. At this time, the bus bar 520 is overlaid on the harness tray 450 so as to straddle the low bar 455b, and the tall bar 455a is positioned between the adjacent bus bars 520 so as to prevent a short circuit between the bus bars.

  Further, wire harnesses 8a and 8b are mounted in the gaps between the fixing rods 453, respectively. The wire harnesses 8 a and 8 b are harnesses including a signal line between the control circuit 6 and the relay circuit 7.

  Further, in a state where the harness tray 450 is overlapped, the ribs 452a and the ribs 452b are arranged in such a layout as to sandwich the ribs 412a and 412b of the assembled battery holder 460 when viewed from the side surface of the stack 5.

  Next, as shown in FIG. 15, the fastening member 440 is disposed between the rib 412 a and the rib 412 b of the assembled battery holder 460. The fastening member 440 is a rod-like member formed by processing a steel plate into a box shape, and is in surface contact with the inside of the rib 412a and the rib 412b at the end surface 442a. A through hole 442a1 is opened in the end surface 442a, and a bolt 440a is inserted and fastened together with the through hole 413a of the rib 412a. In the drawing, the other end face located at the blind spot has the same configuration.

  As a result, as shown in FIG. 16, in the unit cell 50 constituting the stack 5, each surface including the upper surface 51 is covered with each beam member and fastening member of the assembled battery holder. Further, the pair of sandwiching plates 411R and 411L of the assembled battery holder 460 presses the stack 5 with a force according to the tightening torque of the bolt 440a. As a result, the stack 5 is held at a constant fastening pressure, and its outer shape is maintained against the expansion pressure of the unit cell 50 that accompanies the use of the power supply device 1 over time, and the assembled battery 470 is completed.

  The second embodiment having the above-described configuration is characterized in that, in the assembled battery 470, the harness tray 450 includes a rib 452a and a rib 452b. That is, as shown in FIG. 15, the positions of the ribs 452a and the ribs 452b forming a pair of rows are determined according to the positions of the ribs 412a and the ribs 412b of the assembled battery holder 460, The interval is determined according to the width of the fastening member 440 (the dimension in the direction along the front surface of the stack 5). Therefore, as shown in FIG. 16, the fastening member 440 is fastened to the assembled battery holder 460 while being fixedly positioned between the ribs 452 a and 452 b.

  As described above, by using the harness tray 450 including the ribs 452a and the ribs 452b, the fastening member 440 can easily connect the pair of holding plates 411R of the assembled battery holder 460 and the like without using a separate jig. Since it can be temporarily fixed to 411R, it is possible to shorten the time required to create the assembled battery 470 and improve productivity.

  Moreover, since the completed assembled battery can fasten the stack 5 by the assembled battery holder using a light and thin plate-shaped metal plate, it can be made smaller and lighter than the conventional assembled battery.

  In the above description, the rib of the present invention is configured by two rows of ribs 452a and 452b, but may be configured to include only one of the ribs. This is suitable when working with the stack 5 lying down and the harness tray 450 facing upward. Furthermore, when it comprises only the lower rib 452a, as shown in FIG. 15, even when working in front of the stack 5, the fastening member 440 can be locked to prevent falling off, which is more preferable. .

  Further, the ribs 452a and 452b are arranged in pairs corresponding to each unit cell 50, but a staggered arrangement in which ribs 452a or 452b are alternately provided for each unit cell 50 may be adopted. The effect is obtained if at least a pair of ribs 452a and 452b is provided for the entire harness tray 450.

  In the above configuration, the single battery 50 corresponds to the single battery of the present invention, the assembled battery 470 corresponds to the assembled battery of the present invention, and the pair of sandwiching plates 411R and 411L includes the pair of sandwiching plates of the present invention. It corresponds to. The stack 5 corresponds to the stack of the present invention, the fastening member 440 corresponds to the fastening member of the present invention, the harness tray 450 corresponds to the insulating member of the present invention, and the ribs 452a and 452b correspond to the rib of the present invention. To do.

  However, the present invention is not limited to the above configuration. The assembled battery holder 410 has tabs 412a and 412b protruding from the edges of the pair of holding plates 411R and 411R, and the fastening member 440 is fastened between the tabs, but the tab is omitted. And it is good also as a structure which opens a through-hole directly in a clamping board and pinches | interposes a fastening member. However, when the structure is provided with a tab, the holding plate itself is downsized, and the weight of the assembled battery is reduced, which is more preferable.

  Further, although the fastening member 440 is a rod-shaped member formed by processing a steel plate into a box shape, the fastening member 440 may be realized by a metal rod or the like, and is not limited by its specific configuration.

  In addition, the assembled battery 470 has the upper surface 51 of the unit cell 50 as the front surface, but the assembled battery of the present invention may have a mode in which the upper surface of the unit cell and the upper surface of the assembled battery coincide with each other.

(Embodiment 3)
The third embodiment of the present invention is characterized by the structure of a fastening member for fastening the stack 5 held by the assembled battery holder 460 to complete the assembled battery 470.

  17 (a) and 17 (b) are perspective views for explaining the configuration of a fastening member 440 used in the assembled battery 470 according to Embodiment 3 of the present invention.

  As shown in FIG. 17 (b), the fastening member 440 is a rod-like member formed by processing a steel plate into a box shape. Like the one end surface 442a shown in FIG. 15, the other end surface 442b has a through hole. 442b1 is opened. In addition, a cylindrical discharge end 441 whose end face forms an opening is provided at the upper part of the through hole 422b1.

  As shown in FIG. 17A, the inside of the fastening member 440 is hollow, and an outer circular opening 444 that communicates with the inside of the member is provided on the main surface 443 opposite to the front surface of the stack 5. Yes. The opening 444 faces the safety valve 530 of the cell 50 through the window 451 of the harness tray 450. An annular packing 335 made of synthetic rubber or the like is provided around the opening 444, and seals the periphery of the safety valve 530 when the fastening member 440 is fastened to the assembled battery holder 460. Further, the discharge end 441 communicates with the inside of the fastening member 440.

  As illustrated in FIG. 17A, a nut 442a2 that is coaxial with the through hole 442a1 is fixed to the back surface of the end surface 442a of the fastening member 440, thereby fastening the bolt 440a. A similar configuration is also provided on the other end surface 442b.

  The third embodiment having the above-described configuration is characterized in that the fastening member 444 is hollow and has a cavity communicating from the opening 444 to the discharge end 441.

  When a non-aqueous electrolyte secondary battery such as a lithium ion secondary battery is used as the single battery 50 constituting the assembled battery 470, it is enclosed in the casing of the single battery 50 due to overcharge associated with the use of the power supply device 1. The electrolyte solution is decomposed, and gas is generated in the casing of the unit cell 50. Moreover, the electrode plate accommodated in the housing also expands as the active material layer expands. In the unit cell 50, the safety valve 530 is opened when the pressure inside the casing exceeds a predetermined value in order to prevent the deformation and breakage of the casing due to the generation of these gases and the expansion of the electrode plate. The gas is released to the outside of the housing.

  In the present embodiment, with the above-described configuration, the pipe for leading the gas released from the unit cell 50 to the outside of the power supply device 1 is integrated with the fastening member 440 for fastening the stack 5. It has become. That is, the gas released from the safety valve 530 is ejected from the opening 444 into the fastening member 440 and discharged from the discharge end 411. As shown in FIG. 5, the discharge end 411 is connected to a resin discharge pipe 442, and the gas is further discharged to the outside of the power supply device 1 through the discharge pipe 442. The fastening member 440 has a mechanical strength sufficient to suppress deformation of the stack 5 as a natural function, and also has durability to resist changes over time as a pipe.

  Furthermore, when the fastening member 440 is arranged as the stack 5 so as to face the unit cells 50 arranged with the upper surface 51 having the electrode terminals 510 lying down, the following effects are obtained. That is, when the cell 50 generates gas due to decomposition of the electrolytic solution, the internal pressure rises, and the safety valve opens, the electrolytic solution may be discharged at the same time. In the present embodiment, even in such a case, the discharged electrolytic solution is stored in the fastening member 440, and the electrolytic solution can be prevented from inadvertently diffusing out of the stack 5.

  As described above, according to the present embodiment, the number of parts of the assembled battery is reduced and the weight is reduced, and the assembled battery having excellent productivity, downsizing, and high functionality and a power supply device using the same are provided. It becomes possible.

  In the above description, the fastening member 440 has a hollow box shape. However, as shown in FIG. 18A, the inner wall 440y on the side that faces the stack 5 and forms a parallel surface with respect to its inner wall. Making the thickness larger than the thickness of the inner wall 440x in the short direction perpendicular to the parallel plane increases the cross-sectional area of the member in the fastening direction of the bolt 440a to ensure strength and the size of the cavity. It is possible to secure the thickness and improve the performance as a gas discharge pipe, which is more preferable.

  Further, as shown in FIG. 18B, ribs 440z1 and 440z2 may be provided on the inner wall of the fastening member 440 that extend along the longitudinal portion and reach the back surfaces of the end surfaces 442a and 442b. As in the configuration example (a), durability in the fastening direction can be enhanced. In the drawing, the ribs 440z1 and 440z2 are provided on the upper and lower inner walls of the fastening member 440, respectively, but either one may be provided, or may be provided on at least one of the front and rear inner walls of the fastening member 440. Good.

  In the above configuration, the single battery 50 corresponds to the single battery of the present invention, the assembled battery 470 corresponds to the assembled battery of the present invention, and the pair of sandwiching plates 411R and 411L includes the pair of sandwiching plates of the present invention. It corresponds to. The stack 5 corresponds to the stack of the present invention, the fastening member 440 corresponds to the fastening member of the present invention, the opening 444 of the fastening member 440 corresponds to the first opening of the present invention, and the discharge end 441 is the present invention. This corresponds to the second opening. The ribs 452a and 452b correspond to the ribs of the present invention. The safety valve 530 corresponds to the safety valve of the present invention.

  However, the present invention is not limited to the above configuration.

  The fastening member 440 has a box-shaped outer shape, but may have a cylindrical shape or any other shape as long as the fastening member 440 has a cavity that communicates with the safety valve of the unit cell and the lid. In addition, the outer shape of the safety valve of the unit cell 50 and the shape of the opening 444 of the fastening member 440 corresponding thereto may be arbitrary such as a rectangle in addition to a circle.

  As in the case of the second embodiment, the assembled battery holder 410 has tabs 412a and 412b protruding from the edges of the pair of holding plates 411R and 411R, and the fastening member 440 is interposed between the tabs. However, the tab may be omitted, and a through hole may be directly opened in the holding plate to sandwich the fastening member. However, when the structure is provided with a tab, the holding plate itself is downsized, and the weight of the assembled battery is reduced, which is more preferable.

  Further, in the above description, the end surface 442b of the fastening member 440 is configured to include the discharge end 441 on the upper side and the through hole 442b1 on the lower side, but the discharge end 441 is provided on the side surface of the fastening member 440, and the end surface The shape of 442b may be the same as that of the end surface 442a. In this case, the shape of the pair of sandwiching plates 411 of the assembled battery holder 410 can be made bilaterally symmetrical including the shape of the tab, so that the productivity of the assembled battery holder can be improved and the stack 5 can be fastened. It is possible to carry out with good balance at both ends of the fastening member 440.

  In addition, the discharge end 441 is configured to be adjacent to the tab 413b. However, the tab 413b may be provided with a through hole or a gap so as to project through the hole. The surface of the end surface 442b in the vicinity of the discharge end 441 also comes into surface contact with the tab 413b. In this case, the stack 5 can be fastened at both ends of the fastening member 440 with good balance.

  In addition, the assembled battery 470 has the upper surface 51 of the unit cell 50 as the front surface, but the assembled battery of the present invention may have a mode in which the upper surface of the unit cell and the upper surface of the assembled battery coincide with each other.

  In the assembled battery 470, the harness tray 450 may be omitted.

(Embodiment 4)
The fourth embodiment of the present invention is characterized by the arrangement of management means for causing the assembled battery 470 to function as a power supply device that can be charged and discharged.

  19 and 20 are perspective views for explaining the configuration of the power supply device according to the fourth embodiment of the present invention. As shown in FIG. 19, the control circuit 6 is arranged on the holding plate 411 </ b> R that is the right side surface of the assembled battery 470. At this time, the connection between the control circuit 6 and the holding plate 411R is performed through through holes 415a, 415b, 415c, and 415d provided on the holding plate 411R shown in FIGS. The control circuit 6 and the assembled battery 470 are electrically connected by connecting the connection member 610 to the negative electrode terminal 511b of the stack 5 through the through hole 610a.

  Similarly, as illustrated in FIG. 20, the relay circuit 7 is disposed on the holding plate 411 </ b> L that is the left side surface of the assembled battery 470. The relay circuit 7 and the sandwiching plate 411L are connected through the through holes 416a to 416d of the sandwiching plate 411 shown in FIGS. 20 and 6 and the like, and the electrical connection between the relay circuit 7 and the assembled battery 470 is performed. The connection member 710 is connected to the positive electrode terminal 511a of the stack 5 through the through hole 710a.

  Here, as shown in FIGS. 19 and 20 and FIG. 6, the through holes 415a to 415d are opened on hemispherical protrusions 415a1 to 415d1 formed by punching on the holding plate 411R. In addition, annular packings 415a2 to 415d2 made of synthetic rubber are provided around the through holes 415a to 415d, respectively. The through holes 416a to 416d of the holding plate 411L have the same configuration.

  Further, the protrusions 415a1 to 415d1 have a recess as an inverted shape on the back surface of the sandwiching plate 411R and facing the side surface of the stack 5, and for fastening the bolt on the control circuit 6 side deeply in the recess. The nut is fixed. In addition, in FIG. 6, the structure of this recessed part and corresponding nuts 416a3-416d3 are shown as the back surface of the holding plate 411L.

  On the other hand, as shown in the exploded perspective view of FIG. 21, the control circuit 6 has a configuration in which a circuit board 630 on which a circuit element 631 is mounted is mounted on a base 620 made of synthetic resin. Through holes 415d, 415c, and 415b by bolts 640a and 640b provided at the lower end of the base plate, a bolt 640c provided above the base and another bolt (not shown as a blind spot by the circuit board 630 in the drawing). , And 415a.

  Similarly, as shown in the exploded perspective view of FIG. 22, the relay circuit 7 also has a configuration in which a relay body 730 is mounted on a base 720 made of synthetic resin, and is provided on the right side surface of the base 720. Are connected to the through holes 416b, 416d, 416c, and 416a by the bolts 740a and 740b, the bolt 740c provided on the left side, and another bolt (not shown as a blind spot by the base 720 in the figure), respectively. It becomes possible.

  In the fourth embodiment having the above-described configuration, the fixing positions of the control circuit 6 and the relay circuit 7 on the side surface of the assembled battery 470 are decentered from the center of the side surface using the above-described through holes. It is characterized by.

  Hereinafter, the connection between the control circuit 6 and the holding plate 411R will be described as an example. As shown in FIG. 6, the through holes 415a and 415b form a row adjacent to the edge near the top surface of the holding plate 411R, and the through holes 415b and 415d are at the edge near the tab 412a of the holding plate 411R. A column is formed adjacently, the through holes 415d and 415c form a row adjacent to the edge near the bottom surface of the holding plate 411R, and the through holes 415c and 415a are formed at the edge near the back surface of the holding plate 411R. Adjacent form a column.

  The control circuit 6 fastens and fixes the bolts corresponding to the two through-holes constituting the column or row, and omits the fastening of the bolts corresponding to the other two through-holes. Alternatively, the base 620 is fixed in a swingable state in the vicinity of the fastening position by fastening with a weak tightening torque.

  This has the following effects. That is, when the internal pressure of the unit cell 50 increases due to overcharge or the like and the stack 5 expands to deform the outer shape of the assembled battery holder 410, the deformation is generated on the pair of holding plates 411R (and 411L). It is considered that the largest appears in the direction from the center to the outside along the arrangement direction of the stack 5. The edge of the sandwiching plate 411 </ b> R that is an outer rectangular shape is restrained by the first beam member 417, the second beam member 420, the third beam member 430, and the fastening member 440, and is not easily affected by deformation. Because.

  When the surface of the sandwiching plate 411R is deformed so as to protrude from the center O, the control circuit 6 located at the center is subjected to stress accompanying the deformation of the sandwiching plate 411R. At this time, as shown in the schematic diagram of FIG. 23A, when the control circuit 6 is fixed with bolts 415a and 415d so as to straddle the center O of the holding plate 411R, as shown in FIG. When the center O is lifted, there is a possibility that problems such as deformation or breakage of the base 620 or the circuit board 630 or dropping from the surface of the holding plate may occur.

  Therefore, in the present embodiment, when the control circuit 6 is fixed along the column or row so as not to straddle the center O of the nipping plate surface, the nipping plate surface is deformed. The base 620 is moved following the deformation. The example shown in FIG. 23 (c) shows a state in which the bolts 415a and 415b (the bolt 415b is not shown) arranged in parallel on the same side with respect to the center O are fixed. As shown in this example, the pair of bolts forming the column or row of the control circuit 6 does not straddle the center O of the surface of the holding plate, so that one end of the both ends of the control circuit 6 can be displaced as a free end. ing.

  As a result, it is possible to prevent the stress of deformation of the holding plate from being applied to the control circuit 6 and realize a highly reliable power supply device.

  In the above configuration, the power supply main body 4 corresponds to the power supply apparatus of the present invention, the single battery 50 corresponds to the single battery of the present invention, the assembled battery 470 corresponds to the assembled battery of the present invention, and the stack 5 This corresponds to the stack of the present invention. The pair of sandwiching plates 411R and 411L correspond to a pair of sandwiching plates of the present invention, the fastening member 440 corresponds to the fastening member of the present invention, and the combination of both corresponds to the restraining means of the present invention. The control circuit 6 and the relay circuit 7 correspond to a management circuit or an electric device of the present invention.

  However, the present invention is not limited to the above configuration. In the above description, the fixing position of the control circuit 6 or the relay circuit 7 and the sandwiching plate 411R or 411L is set so as not to straddle the center of the sandwiching plate. May be defined based on the shape of the sandwiching plate, but is not necessarily limited to that determined from the shape of the sandwiching plate, and includes the intersections of the diagonal lines of the through-holes spaced apart from the sandwiching plate It may be defined as a region. Further, it may be defined as the most deformed portion detected by an industrial test or a simulation or the like in which a sample of the assembled battery 470 is created in advance.

  Further, the control circuit 6 or the relay circuit 7 may be configured to be fixed only to the center of the present invention. As shown in FIG. 23B, even when the fixing is performed only at the center 0, the deformation stress is not applied to the electric device of the present invention.

  Further, the electrical device of the present invention may be a circuit or the like that performs an operation unrelated to charging / discharging of the stack 5.

  Therefore, it is more preferable to appropriately select and use the through holes 415a to 415d in a layout that avoids the portion. Of the lowest through holes 415a to 415d, only one through hole may be used for fixing.

(Embodiment 5)
The fifth embodiment of the present invention is characterized by the configuration of the control circuit 6 and the relay circuit 7 that constitute the management means of the power supply device body 4.

  With reference to the exploded perspective view of FIG. 21 again, the configuration of the control circuit 6 will be described in detail.

  As shown in FIG. 21, the control circuit 6 has a circuit board 630 on which a circuit element 631 is mounted on a synthetic resin base 620. Furthermore, wall bodies 622 a, 622 b, and 622 c that are upright from the main surface 621 of the base 620 are provided around the substrate 630. The wall bodies 622a and 622c are orthogonal to the front surface of the stack 5, and the wall bodies 622b and 622d are parallel to the front surface of the stack 5.

  Furthermore, plate-like connection members 610, 640, and 650 made of copper, aluminum, their alloys, or other conductive metals are provided above the base 620 to connect to the assembled battery 470. Connection member 610 connected to negative electrode terminal 511a of assembled battery 470 via through hole 610a is further connected to connection members 610 and 650. As will be described later, the connection member 650 is a member for connecting to the negative electrode terminal 3b of the power supply device body 4 as a whole, and a fastening nut 650a is fixed to the end.

  Next, the configuration of the relay circuit 7 will be described with reference to the exploded perspective view of FIG. 22 again. As shown in FIG. 22, the relay circuit 7 has a pair of relay main bodies 730 mounted on a base 720 made of synthetic resin. Similar to the control circuit 6, a wall body standing upright from the surface of the base 720 is provided around the relay body 730. These wall bodies include a wall body 722a that forms a plane parallel to the front surface of the stack 5, a wall body 722b that forms a plane orthogonal to the front surface of the stack 5, and a wall body that obliquely intersects the front surface of the stack 5. 722c is combined.

  Further, the pair of relay main bodies 730 includes plate-like connection members 710 and 711 that are made of the same material as the connection member 610 and are connected to the assembled battery 470. The connection member 710 is a member that is connected to the electrode terminal 511b on the positive electrode side of the assembled battery 470 via the through hole 710a. The connection member 711 is a member for connecting to the positive electrode terminal 3a of the entire power supply device body 4, and a fastening nut 711a is fixed to the end portion. Further, the connection members 710 and 711 are connected to both relay bodies 730.

  The fifth embodiment having the above-described configuration is characterized in that a wall body provided around the circuit board and the relay body is provided.

  The control circuit 6 will be described as an example. As shown in FIG. 21, wall bodies 622a to 622c upstanding from the main surface 621 surround the circuit board 630, and the height H1 from the main surface 621 is a circuit element 631 including the thickness of the circuit board 630. It is larger than the total height h1. That is, the base 620 has a bowl-like shape composed of a main surface 621 and wall bodies 622a to 622c, and the circuit board 630 is accommodated therein.

  Accordingly, the walls 622a to 622c serve as a barrier against entry of foreign matter from the outside, and the power source shown in FIG. 2 or FIG. 24 is mounted when the control circuit 6 shown in FIG. 19 is mounted on the assembled battery 470. When the apparatus main body 4 is stored in the container main body 2, it is possible to reduce the possibility that the operator's hand, tool, or jig directly contacts the circuit board 630, thereby improving the yield. The wall body 622d serves as an insulating coating that covers the outside of the connection members 610 and 640 through which a large current flows.

  Further, the wall bodies 622a to 622d face the inner wall of the container body 2 in a state where the power supply body 4 is housed in the container body 2, as shown in FIG. Therefore, it acts as a cushioning material that prevents the inner wall of the container body 2 and the circuit element 631 from coming into direct contact. That is, even when the power supply device body 4 vibrates and swings in the arrangement direction of the stack 5 due to an external force, the tips of the wall bodies 622a to 622d always collide with the inner wall of the container body 2 before the circuit element 631. The circuit element 631 can be protected.

  Further, as shown in FIGS. 24 to 26, the inner wall of the container main body 2 excluding the bottom surface is provided with ribs 220a to 220c made of a synthetic resin that stands upright from the wall surface and extends toward the center of the container. In particular, the rib 220b provided on the right side wall faces the control circuit 6 when the power supply main body 4 is stored.

  The rib 220b extends from the opening 2x toward the bottom surface on the inner wall of the container body 2, and the wall bodies 622a and 622c are arranged orthogonal to the rib 220b, so that they are in contact with each other at least during swinging. Further, it is possible to further secure impact resistance.

  Also in the relay circuit 7, as shown in FIG. 22, the wall body formed by combining the wall bodies 722a to 722c has a height H2 from the main surface 721 larger than the height h2 of the pair of relay main bodies 730. The same effects as those of the control circuit 6 described above are obtained.

  As described above, according to the present embodiment, in the power supply device having a battery, each circuit constituting the management circuit or the electric device can be protected to improve the yield during manufacture and increase the durability during use. It is possible.

  In the above configuration, the power supply main body 4 corresponds to the power supply apparatus of the present invention, the single battery 50 corresponds to the single battery of the present invention, the assembled battery 470 corresponds to the assembled battery of the present invention, and further the assembled battery. Reference numeral 470 corresponds to the battery body of the present invention. The stack 5 corresponds to the stack of the present invention. The pair of sandwiching plates 411R and 411L correspond to a pair of sandwiching plates of the present invention, the fastening member 440 corresponds to the fastening member of the present invention, and the combination of both corresponds to the restraining means of the present invention.

  The control circuit 6 and the relay circuit 7 correspond to a management circuit or an electrical device of the present invention. The control circuit 6 and the relay circuit 7 include a portion including the main surface 621 of the base 620 of the control circuit 6 and a main surface 721 of the base 720 of the relay circuit 7. Each of the included portions corresponds to the inner layer of the present invention. The wall body formed by combining the wall bodies 622a to 622d and the wall bodies 722a to 722c corresponds to the wall body of the present invention, and the ribs 220a to 220c of the container body 2 correspond to the ribs of the present invention.

  However, the present invention is not limited to the above configuration.

  The wall bodies 622a to 622d and the wall bodies 722a to 722c are all formed as part of the base 620 or 720 so as to stand upright from the main surface 621 or 721, but the base 620 or 720 is the main surface. It does not have 621 or 721 but is good also as what is comprised only from a wall body. In this case, the circuit board 630 or the relay circuit 730 is in direct contact with the holding plate, but the effect of protecting the circuit elements and the like by the wall and preventing the collision with the inner wall of the storage container is maintained.

  Further, the wall bodies 622a to 622d and the wall bodies 722a to 722c are all provided so as to surround the circuit board 630 or the relay circuit 730, but only a part of the periphery may be formed. Even in this case, the effect of preventing the collision with the inner wall of the storage container can be sufficiently obtained.

  Further, although the wall bodies 622a to 622d and the wall bodies 722a to 722c have been described as standing upright from the bottom surface, the wall body may be configured to stand up with an acute angle or an obtuse angle. The material of the wall may be a metal or any other material in addition to the synthetic resin. However, when it is made of a synthetic resin, it is easy to create, and similarly, the compatibility with the ribs 220a and 220b of the resin container body 2 as a buffer material is good, and it is more preferable. Further, the electrical device of the present invention may be a circuit or the like that performs an operation unrelated to charging / discharging of the stack 5.

  In the above description, the stack 5 including the assembled battery 470 is accommodated as the power supply main body 4. However, the battery main body of the present invention may be implemented as a single battery, and has the same effects as described above. Play.

(Embodiment 6)
The sixth embodiment of the present invention is characterized by the structure of the storage container that stores the power supply main body 4.

  Hereinafter, the configuration of the container body 2 of the storage container according to the sixth embodiment will be described in detail with reference to the perspective views of FIGS.

  As shown in FIG. 25, the inner wall of the storage container 2 is provided with ribs 220a to 220c made of synthetic resin, which stand upright from the wall surface and extend toward the center of the container. The ribs 220a to 220c are strip-shaped members having an outer rectangular shape extending from the opening 2x of the container body 2 toward the bottom surface. The ribs 220a to 220c are formed by injection molding simultaneously with the storage container 2 body, and are seamlessly integrated with the container body 2 The configuration is as follows.

  Next, as shown in FIG. 24, in a state where the power supply main body 4 is housed in the container main body 2, the rib 220 a is located on the left side surface of the power supply main body 4 and faces the relay circuit 7. 220 b is located on the right side surface of the power supply body 4 and faces the control circuit 6, and the rib 220 b faces the back surface of the power supply body 4.

  These ribs 220a to 220c are arranged such that when the power supply device 1 is subjected to vibration or impact when used as an in-vehicle storage battery or the like, the built-in power supply device main body 4 directly collides with the container main body 2, and the container main body 2 Plays a role as a cushioning material to prevent damage. As a result, the effect of improving the impact resistance of the power supply device can be obtained, and as a result, versatility can be improved. Further, since the contact between the power supply device main body 4 and the ribs 220a to 220c is limited to the tip portion of the rib, it is possible to reduce the influence of heat generation of the power supply device main body 4.

  Furthermore, as shown in FIGS. 24 and 26, the power supply device according to the sixth embodiment is characterized in that the inner wall 221 on the side facing the front surface of the power supply device body 4 is a flat surface without ribs.

  This is due to the following reason. That is, the front surface of the power supply device main body 4 accommodated in the container main body 2 is an upper surface 51 on which the electrode terminals 510 of the unit cells 50 constituting the stack 5 are arranged, and this generates the most heat as the power supply device 1 is used. It is also a place where becomes larger. In addition, the power supply device body 4 is provided with a fastening member 440 that functions as a discharge pipe for discharging gas resulting from electrolyte decomposition in the stack 5 and through which high-temperature gas circulates. Since 440 is also arranged in front of the power supply device body 4, the front is the largest heat source.

  Further, when the power supply device 1 vibrates and swings, the lid 3 and the container body which are storage containers also vibrate, and the vibration is transmitted to the tip portion of the rib, and the tip portion of the rib is transferred to the power supply device body 4. Create a state of intermittent or continuous contact. As a result, vibration is also transmitted to the power supply device main body 4, and a pair of holding plates 411 </ b> R and 411 </ b> L of the assembled battery holder 410 that directly restrains the stack 5, in particular, a connection portion between the members of the power supply device main body 4 with bolts or the like. There is a risk that the bolts 440a connecting the fastening members 440 and the fastening members 440 are loosened to affect the shape retention of the stack 5.

  From the above, in the container body 2, the inner wall 221 facing the front surface of the power supply device body 4 is not provided with a rib so as to prevent the resin container body 2 from being overheated and deformed. Yes. In addition, heat from the front surface of the power supply device body 4 can be evenly distributed in a space formed between the inner wall 221 and the front surface of the power supply device body 4, thereby improving heat dissipation efficiency.

  Further, by adopting a configuration in which no rib is provided, vibration of the storage container is prevented from affecting the fastening member 440 through the rib, and loosening of the coupling between the fastening member 440 and the assembled battery holder 410 accompanying a change with time is suppressed. Making it possible.

  As described above, according to the power supply device of the sixth embodiment, the ribs 220a to 220c are provided on the inner side wall of the container body 2, thereby improving the impact resistance and heat resistance, and having excellent versatility. Can be provided.

  In the above configuration, the ribs 220a to 220c are described as being upright with respect to the inner side surface of the container body 2 except for a part shown in the figure. It is also possible to stand up with an acute angle or an obtuse angle.

  In the above configuration, each of the ribs 220a to 220c is a rectangular strip-shaped member that extends from the opening 2x of the container body 2 toward the bottom surface, and has a width ( The distance from the inner side surface of the container body 2 to the edge) is substantially the same in the extending direction, but the rib of the present invention gradually increases in width from the opening 2x toward the bottom surface. It is good also as a structure which has a shape. In this case, when the power supply device main body 4 is stored in the container main body 2, the bottom surface of the power supply device main body 4 is fitted into the wide rib, so that the power supply device main body 4 can be stably placed in the container main body 2. There is an effect that can be fixed.

  In the above configuration, the single battery 50 corresponds to the single battery of the present invention, the assembled battery 470 corresponds to the assembled battery of the present invention, and the pair of sandwiching plates 411R and 411L includes the pair of sandwiching plates of the present invention. It corresponds to. The stack 5 corresponds to the stack of the present invention, and the fastening member 440 corresponds to the fastening member of the present invention.

  Moreover, the container main body 2 and the cover part 3 comprise the storage container of this invention, and the ribs 220a-220c of the container main body 2 are equivalent to the rib of this invention.

  However, the present invention is not limited to the above configuration.

  In the above description, the rib of the present invention is provided only on the container main body 2, but may be configured on the inner wall of the lid 3.

  Further, as shown in FIG. 26, the rib of the present invention is configured not to be provided over the entire inner wall 221 facing the front surface of the power supply main body 4, but at least facing the fastening member 444 having the highest heat. It is good also as a structure which does not provide only in the part to perform.

(Embodiment 7)
The seventh embodiment of the present invention is characterized by the configuration of the lid as a storage container for storing the power supply device main body 4 and the configuration of the assembled battery holder.

  In the following, with reference to the perspective views of FIGS. 27 and 28, a further creation procedure of the power supply device of the present embodiment will be described, and the lid 3 of the storage container and the assembled battery in the power supply device of the seventh embodiment will be described. The configuration of the holder 460 will be described.

  First, as shown in FIG. 27, the cover 3 is put on the storage container 2 in a state where the power supply main body 4 is stored so as to close the opening 2x. The lid 3 has through holes 311a opened at four corners of the upper surface 3x, and the through holes 311a are holes opened on bases 230 provided at the four corners of the storage container 2 in a state of being fitted to the storage container 2. 230a. By inserting and fastening the screw 320 into the through hole 311a, the lid 3 and the storage container 2 are coupled.

  The lid 3 is provided with windows 310a and 310b adjacent to the positive electrode terminal 3a and the negative electrode terminal 3b, respectively, and a harness terminal 632 connected to the control circuit 6 is drawn out from the window 310a. From the window 310b, the end of the discharge pipe 442 extended from the fastening member 440 is pulled out.

  Further, the positive electrode terminal 3a and the positive electrode terminal 511a of the power supply main body 4 are connected via the window 310a, and the negative electrode terminal 3b and the negative electrode terminal 511b of the power supply main body 4 are connected via the window 310b. Is done. Specifically, as shown in the plan view of the main part of FIG. 29, the connection terminal 340 provided inside the lid 3 and fixed to the positive terminal 3a is connected to the relay circuit 7 by a bolt 341 by an operation through the window 310b. The electrical and mechanical connection is completed by fixing with. Similarly, as shown in FIG. 30, the connection terminal 330 provided inside the lid portion 3 and fixed to the negative electrode terminal 3b is fixed to the control circuit 6 by a bolt 331 by operation through the window 310b. Complete mechanical and mechanical connections.

  Here, FIG. 31 shows a connection state between the negative electrode terminal 3 b and the power supply device body 4. The connection member 610 having one end fixed to the negative electrode terminal 511b is connected to the connection member 330 via the connection member 640 of the control circuit 6 and the connection members 640 and 650 shown in FIG. The nut 650a provided on the back surface of the connection member 650 shown in FIG. 21 and the bolt 331 shown in FIG. 31 are fastened to complete the connection between the negative electrode terminal 511b and the negative electrode terminal 3b.

  Further, as shown in FIG. 32, the connection between the positive terminal 3a and the power supply main body 4 is performed by connecting the connection member 710 having one end fixed to the positive electrode terminal 511a to connect the relay main body 730 and the connection member 710 of the relay circuit 7. To the connection member 340. The nut 711a provided on the back surface of the connecting member 710 shown in FIG. 22 and the bolt 341 shown in FIG. 32 are fastened to complete the connection between the positive electrode terminal 511a and the positive electrode terminal 3a. Although omitted in FIGS. 31 and 32 for the sake of explanation, the lid 3 is actually interposed between the negative electrode terminal 3a and the connection terminal 330, and actually between the positive electrode terminal 3b and the connection terminal 340. doing.

  Next, the lid 3 and the power supply device body 4 are connected. That is, as shown in FIG. 28, a through hole 311b is opened on the upper surface 3x of the lid portion 3 near the back surface of the storage container, and the through hole 311b is fitted to the storage container 2 by the lid portion 3. In the combined state, it coincides with the through hole 418a opened in the tab 418 of the power supply device main body 4 stored in the storage container 2.

  By inserting and fastening the screw 330 into the through hole 311b, the lid 3 and the power supply device body 4 are coupled. Here, the tab 418 is a tab provided at the center of the upper beam member 417a of the first beam member 417 of the assembled battery holder 410 shown in FIG. 6, and a nut coaxial with the through hole 418a is provided on the back surface (not shown). Is fixed. The screw 330 is fastened by this nut.

  Further, screws 211 are inserted from the through holes 210 on the bottom surface of the container body 2 shown in FIG. 2 to fix the power supply device body 4 and the container body 2.

  Finally, as shown in FIG. 33, the lid members 312a and 312b are fitted into the windows 310a and 310b, respectively, thereby completing the power supply device 1.

  The seventh embodiment having the above-described configuration is created using the assembled battery holder 460 described in the first embodiment, so that the power supply device main body 4 stored in the storage container is the lid 3 and the container main body. 2 is configured to be fixed to both.

  That is, the power supply device main body 4 is based on the assembled battery holder 460 shown in FIGS. 6 and 7, and the tab 418 provided with the through hole 418 a for connecting to the lid portion 3 and the penetration for connecting to the container main body 2. And a tab 423 provided with a hole 422a. The tab 423 is fixed to the lid portion 3 and the container body 2 respectively.

  As a result, the power supply device body 4 can be stably fixed in the storage container, and a power supply device with excellent reliability can be provided.

  Moreover, since the power supply device body 4 can be fixed in the storage container without requiring a separate member for connecting the assembled battery holder and the storage container as in the prior art, the number of parts of the power supply device 1 can be reduced. As a result, the number of manufacturing steps can be reduced, and a power supply device with excellent productivity can be realized.

  Further, in the seventh embodiment, as shown in FIGS. 2 and 28, the power supply main body 4 is fixed from the outside of the storage container by screwing. Thereby, the storage container and the power supply device main body 4 can be easily attached and detached, and improvement of productivity and easy maintenance can be realized.

  In particular, the power supply device body 4 has a front surface that is an upper surface having the electrode terminals 23 of the unit cells 50, so that the upper and lower surfaces of the power supply device body 4 itself are constituted by symmetrical side surfaces 52 of the unit cells 50. Correspondingly, the tab 418 and the tab 428 are also arranged vertically symmetrically with respect to the power supply device body 4. Therefore, after the lid 3 and the container body 2 are fixed, the operation of fixing the power supply device main body 4 and the container main body 2 shown in FIG. 2 or fixing the power supply device main body 4 and the lid 3 shown in FIG. Can be done in any order. Thereby, in the assembly of the power supply device 1, it is possible to further improve the workability.

  In the above-described configuration, the power supply device 1 corresponds to the power supply device of the present invention, the single battery 50 corresponds to the single battery of the present invention, the assembled battery 470 corresponds to the assembled battery of the present invention, and the stack 5 corresponds to the main battery. It corresponds to the stack of the invention. The pair of sandwiching plates 411R and 411L corresponds to a pair of sandwiching plates of the present invention, the fastening member 440 corresponds to the fastening member of the present invention, and the combination of the assembled battery holder 410 and the fastening member 440 is the present. This corresponds to the restraining means of the invention. The lid 3 and the container main body 2 correspond to the lid and the container main body of the present invention, respectively.

  Further, the first beam member 417 of the battery pack holder corresponds to the first beam member of the present invention, the tabs 412a, 412b and the tab 418 are tabs of the present invention, and the through holes 413a, 413b and the through hole 418a are Each corresponds to a through hole of the present invention.

  However, the present invention is not limited to the above configuration. In the above description, it is assumed that the lid 3 is fixed to the power supply main body 4 via the first beam member 417 and the container main body 2 is fixed to the power supply main body 4 via the second beam member 420. Although described, the direction of the power supply device in the storage container may be upside down. Therefore, the assembled battery 470 included in the power supply device main body 4 is fixed to the container main body 2 via the first beam member, and the second The structure fixed to the cover part 3 via the beam member 420 may be sufficient. In short, the power supply device of the present invention is not limited by the specific contents of the configuration of the assembled battery to be fixed as long as the assembled battery can be fixed on the upper surface and the lower surface in the storage container.

  Further, in the above description, the connection between the lid 3 and the assembled battery holder 410 is made via the tab 418 of the first beam member 417. However, the lid 3 and the tab 414 of the pair of holding plates 411R and 411L are separately provided. You may make it carry out through this tab 414 by providing a through-hole.

  As described above, according to the power supply device 1 of the embodiment of the present invention, all or a part of the storage battery holder 460, the harness tray 450, the fastening member 440, the lid portion 3 and the container body 2. By providing, it becomes possible to improve productivity.

  Moreover, according to the power supply device 1 of the embodiment of the present invention, all or part of the management means constituted by the control circuit 6 and the relay circuit 7 and the storage container including the lid portion 3 and the container body 2 are provided. As a result, durability and versatility can be improved.

  However, the present invention is not limited to the above embodiments.

  In the above description, as shown in FIG. 8, the stack 5 exposes the assembled battery 50 on the inner wall of the assembled battery holder 460 so that the entire upper surface 51 provided with the electrode terminals 510 is exposed as a side surface of the stack 5. However, the configuration of the assembled battery of the present invention is not limited to this, and the configuration may be such that the upper surface of the unit cell 50 and the upper surface of the stack 5 are aligned. . In this case, a discharge pipe for guiding the cracked gas from the safety valve 530 to the outside is required separately from the fastening member 440, but the fastening member 440 can be realized with a simpler structure.

  Further, in the above configuration, the power source device body 4 is attached to the container body 2 of the storage container with the entire upper surface 51 provided with the electrode terminals 510 of the unit cells 50 as the front surface of the stack 5 as shown in FIG. The power supply device of the present invention may be configured such that the upper surface of the unit cell 50 and the upper surface of the power supply device main body 4 coincide with each other. In short, the power supply device of the present invention is not limited by the posture of the assembled battery in the storage container.

  In the above description, the connection between the stack 5 and the control circuit 6 or the relay circuit 7, and the connection between the control circuit 6 or the relay circuit 7 and the positive terminal 3 a or the negative terminal 3 b of the lid 3 are plate-shaped. Although it was based on the fastening of the bolt with respect to a connection member, you may use arbitrary technical means, such as welding, soldering, adhesion | attachment with a conductive adhesive, for the connection of these each part. Further, a flexible electric wire may be used instead of the connecting member.

  Similarly, the connection between the assembled battery holder 410, the second beam member 420, and the third beam member 430 constituting the assembled battery holder 460 is also fastened by bolts. It may be by any technical means.

  In the above description, the battery of the present invention is a single battery 50 as a non-aqueous electrolyte secondary battery represented by a lithium ion secondary battery. However, the battery is a battery that can be charged and discharged by an electrochemical reaction. If present, a nickel metal hydride battery or other various secondary batteries may be used. Moreover, a primary battery may be sufficient. Further, the battery of the present invention may be an element of a system that directly stores electricity as an electric charge, such as an electric double layer capacitor. In short, the battery of the present invention is a general term for elements capable of storing electricity, and is not limited by the name or specific method.

  In the above description, the outer shape of the storage container is a hexahedron, but may be an arbitrary shape such as a cylindrical shape. The lid 3 and the storage container 2 are made of the same kind of synthetic resin, but may be made of different materials. Further, it may be made of metal or other materials.

  Moreover, although the unit cell 50 which comprises the stack 5 was made into the metal external shape hexahedron, a cylindrical shape may be sufficient. In addition, the stack 5 is composed of four unit cells 50, and is a stack of one vertical and four horizontal rows. However, the stack 5 may be an arbitrary number of combinations in both vertical and horizontal directions.

  Further, in each of the above embodiments, for the same power supply device 1, the power supply device body 4, the assembled battery 470, the assembled battery holders 410 and 460, the harness tray 450, the fastening member 440, the storage container 2, and the control circuit 6 and the relay circuit 7 are provided in common. However, the present invention may be realized as an aspect including only a part of the above-described configuration of the present invention.

  In short, the present invention may be implemented by adding various modifications to the above-described embodiment, including those described above, as long as they do not depart from the spirit of the present invention.

  The present invention as described above has an effect that it is possible to increase the productivity of a power supply device having a stack. For example, an assembled battery holder using a secondary battery, an assembled battery using the same, and a power supply device Etc. are useful.

DESCRIPTION OF SYMBOLS 1 Power supply device 2 Storage container 2x Opening 3, Cover part 3a Positive electrode terminal 3b Negative electrode terminal 3x Upper surface 4 Power supply device main body 5 Stack 5a Buffer material 6, Control circuit 7 Relay circuit 8a, 8b Wire harness 50 Stack 51 Upper surface 52 Side surface 410, 460 Assembly battery holder 417 First beam member 420 Second beam member 430, Third beam member 440 Fastening member 450 Harness tray 470 Assembly battery

Claims (9)

A pair of sandwiching plates sandwiching both end surfaces of the plurality of arranged single cells in the arrangement direction;
A first beam member connecting the edges of the pair of sandwiching plates;
Assembly battery holder. A second beam member detachably connected to each edge of the pair of sandwiching plates;
The first beam member and the second beam member do not face each other on the basis of the holding plate,
The assembled battery holder according to claim 1. The shape of the first beam member and the shape of the second beam member are flat plates.
The assembled battery holder according to claim 2. A third beam member detachably connected to each edge of the pair of sandwiching plates;
The second beam member and the third beam member face each other on the basis of the holding plate,
The space surrounded by the second beam member, the third beam member, and the pair of holding plates has a size that can accommodate the unit cell.
The assembled battery holder according to any one of claims 1 to 3.   The assembled battery holder according to any one of claims 1 to 4, wherein the pair of sandwiching plates and the first beam member are formed as different portions of a bent metal plate. At least one of the first to third beam members has irregularities formed on the surface thereof.
The assembled battery holder according to any one of claims 1 to 5. The unevenness has a shape in which a longitudinal direction is formed along the extending direction of the beam member.
The assembled battery holder according to claim 6. Multiple cells,
An assembled battery holder according to any one of claims 1 to 7,
Fastening members sandwiched between the pair of sandwiching plates of the assembled battery holder;
The plurality of single cells arranged in a space surrounded by at least the first beam member, the pair of sandwiching plates and the fastening member are housed,
The fastening member and the pair of sandwiching plates are fixed,
Assembled battery. The assembled battery according to claim 8,
A resin storage container having a lid and / or a container main body for storing the assembled battery,
Power supply.