JP2017152412A - Power supply device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power supply device which is capable of enhancing durability by protecting a relay circuit as an electric device.SOLUTION: A power supply device 1 includes: a battery pack 470 which is a battery body having at least one unit cell 50; a relay circuit 7 provided on the battery pack 470; and wall bodies 722a-722c provided on a lateral side of a component constituting the relay circuit 7. Height of the wall bodies 722a-722c is greater than that of the component.SELECTED DRAWING: Figure 22

Description

  The present invention relates to a power supply apparatus having an assembled battery including, for example, a plurality of stacked secondary batteries.

  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, since non-aqueous electrolyte secondary batteries represented by lithium ion secondary batteries have high energy density, they are also being applied to electric vehicles and industrial large electric devices. For this reason, in order to obtain a further high voltage, a non-aqueous electrolyte secondary battery that is a single battery is stacked to form one assembled battery.

  The secondary battery expands and deforms the casing by repeatedly decomposing and evaporating the internal electrolyte solution by repeating charge and discharge. In particular, in the assembled battery stack, in order to suppress the deformation of the casing, as shown in Patent Document 1, for example, a restraining plate is arranged around the stack, the stack is sandwiched, and the stack is pressed between the plates. Therefore, a technique that suppresses deformation is widely used.

  Further, in the case of a lithium ion secondary battery, since charging is performed by low current constant voltage control, a control circuit for controlling charging / discharging is provided. And especially in the power supply device which has an assembled battery, the plate surface which is a side surface of a stack is utilized as an arrangement | positioning location of the said control circuit (refer FIG. 2 etc. of patent document 1).

JP 2011-249315 A

  However, the configuration of the conventional power supply apparatus has a problem that an electric device such as a control circuit may be damaged.

  That is, the control circuit in the prior art is configured such that the element part that is a component constituting the control circuit is exposed from the side surface of the stack in the storage container, and the storage container is damaged by external vibration or impact. Will be directly affected. Further, when the assembled battery is produced, the control circuit is provided on the side surface of the stack while being exposed, and the control circuit may be damaged depending on how the control circuit is attached.

  The present invention has been made in view of the above problems, and an object of the present invention is to appropriately protect an electric device and enhance durability in a power supply device having a battery.

  In order to achieve the above object, a power supply apparatus according to an aspect of the present invention includes a battery main body having at least one unit cell, a relay circuit disposed on the battery main body, and components constituting the relay circuit. The wall body is disposed on the side of the wall, and the height of the wall body is higher than the height of the component.

  According to this, in the power supply device, since the wall body higher than the height of the component is disposed on the side of the component constituting the relay circuit, the component can be protected by the wall body. That is, even if the relay circuit is stored in the storage container and the relay circuit is protected, the relay circuit may be damaged if the storage container is deformed, but the relay circuit is protected by the wall body. can do. For this reason, according to the said power supply device, the relay circuit as an electrical device can be protected and durability can be improved.

  The wall body may be formed on the periphery of the relay circuit.

  According to this, since the wall is formed at the peripheral edge of the relay circuit, it is possible to protect the components constituting the relay circuit as an electric device while suppressing foreign matter from entering the relay circuit.

  The wall body may be made of an insulating material.

  According to this, since the wall body is an insulating member, it is possible to insulate the parts constituting the relay circuit as the electric device from other members.

  The power supply device may further include a storage container that stores the battery body and the relay circuit, and a tip of the wall body may be opposed to an inner wall of the storage container.

  According to this, since the front end of the wall body and the inner wall of the storage container are opposed to each other, the wall body serves as a cushioning material that prevents the inner wall of the storage container from directly contacting the relay circuit components. . For this reason, even when the power supply device vibrates or swings due to an external force, the tip of the wall body collides with the inner wall of the storage container before the component, and the component can be protected.

  The inner wall of the storage container may be formed with a rib extending opposite to the wall body.

  According to this, since the inner wall of the storage container is formed with a rib extending opposite to the wall body, even when the power supply device vibrates or swings due to an external force, the leading edge of the rib and the leading edge of the wall body Can further protect the components of the relay circuit as an electrical device.

  Moreover, you may decide that the front-end | tip of the said rib and the front-end | tip of the said wall body cross | intersect seeing from an opposing direction.

  According to this, since the tip of the rib and the tip of the wall intersect, the tip of the rib and the tip of the wall are easily brought into contact when the power supply device vibrates or swings due to an external force. The components of the relay circuit as an electrical device can be protected.

  The storage container may be made of synthetic resin.

  According to this, since the storage container is a member made of a synthetic resin, it can be reduced in weight, and since the outer shape is easy to process, it can be adapted to the standard of an existing storage battery.

  The battery body includes a stack composed of a plurality of the unit cells arranged, and a pair of sandwiching plates that sandwich both side surfaces of the stack, and the relay circuit includes the pair of sandwiching plates. It may be arranged on at least one of the clamping plates.

  According to this, a relay circuit can be easily arrange | positioned on a battery main body by fixing a relay circuit to the clamping board which clamps the both sides | surfaces of a stack.

  According to the power supply device according to the present invention, it is possible to protect a relay circuit as an electric device and enhance durability.

It is a perspective view which shows the structure of the power supply device which concerns on embodiment. It is a perspective view for demonstrating the structure of the power supply device which concerns on embodiment. It is a perspective view which shows the structure of the power supply device which concerns on embodiment. It is a perspective view which shows the structure of the power supply device which concerns on embodiment. It is a perspective view which shows the structure of the power supply device which concerns on embodiment. It is a perspective view which shows the structure of the assembled battery holder which concerns on embodiment. It is a disassembled perspective view which shows the structure of the assembled battery holder which concerns on embodiment. It is a perspective view which shows the structure of the assembled battery holder which concerns on embodiment. It is a perspective view for demonstrating the assembled battery holder which concerns on embodiment. It is a perspective view for demonstrating the assembled battery holder which concerns on embodiment. It is a perspective view for demonstrating the assembled battery holder which concerns on embodiment. It is a perspective view for demonstrating the structure of the assembled battery holder which concerns on embodiment. It is a perspective view which shows the structure of the assembled battery holder which concerns on embodiment. It is a perspective view for demonstrating the structure of the assembled battery which concerns on embodiment. It is a perspective view for demonstrating the structure of the assembled battery which concerns on embodiment. It is a perspective view for demonstrating the structure of the assembled battery which concerns on embodiment. It is a perspective view which shows the structure of the assembled battery which concerns on embodiment. It is a perspective view which shows the structure of the fastening member of the assembled battery which concerns on embodiment. It is a perspective view which shows the structure of the fastening member of the assembled battery which concerns on embodiment. It is a perspective view which shows the other structural example of the fastening member of the assembled battery which concerns on embodiment. It is a perspective view which shows the other structural example of the fastening member of the assembled battery which concerns on embodiment. It is a perspective view for demonstrating arrangement | positioning of the management circuit (electrical device) of the power supply device which concerns on embodiment. It is a perspective view for demonstrating arrangement | positioning of the management circuit (electrical device) of the power supply device which concerns on embodiment. It is a disassembled perspective view which shows the structure of the control circuit of the power supply device which concerns on embodiment. It is a disassembled perspective view which shows the structure of the relay circuit of the power supply device which concerns on embodiment. It is a schematic diagram for demonstrating arrangement | positioning of the control circuit of the power supply device which concerns on embodiment. It is a schematic diagram for demonstrating arrangement | positioning of the control circuit of the power supply device which concerns on embodiment. It is a schematic diagram for demonstrating arrangement | positioning of the control circuit of the power supply device which concerns on embodiment. It is a perspective view for demonstrating the structure of the container main body of the power supply device which concerns on embodiment. It is a perspective view for demonstrating the structure of the container main body of the power supply device which concerns on embodiment. It is a perspective view for demonstrating the structure of the container main body of the power supply device which concerns on embodiment. It is a perspective view for demonstrating the structure of the cover part of the power supply device which concerns on embodiment. It is a perspective view for demonstrating the structure of the cover part of the power supply device which concerns on embodiment. It is a principal part top view for demonstrating the structure of the positive electrode terminal vicinity of the power supply device which concerns on embodiment. It is a principal part top view for demonstrating the structure of the negative electrode terminal vicinity of the power supply device which concerns on embodiment. It is a principal part perspective view for demonstrating the structure of the negative electrode terminal vicinity of the power supply device which concerns on embodiment. It is a principal part perspective view for demonstrating the structure of the positive electrode terminal vicinity of the power supply device which concerns on embodiment. It is a perspective view for demonstrating the structure of the cover part of the power supply device which concerns on embodiment.

  Hereinafter, embodiments will be described with reference to the drawings. Each of the embodiments described below shows a preferred specific example of the present invention. Numerical values, shapes, materials, constituent elements, arrangement positions and connection forms of constituent elements, and the like shown in the following embodiments are merely examples, and are not intended to limit the present invention. Among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims showing the highest concept of the present invention are described as optional constituent elements that constitute a more preferable embodiment.

[Entire configuration of power supply 1]
FIG. 1 is a perspective view showing a configuration of a power supply device 1 according to the embodiment, and FIG. 2 is a perspective view showing an internal configuration thereof.

  As shown in FIG. 1, the power supply device 1 includes an outer hexahedral storage container including a container body 2 made of a synthetic resin such as polypropylene and a lid 3. Further, the power supply device 1 has a positive terminal 3 a and a negative terminal 3 b that are exposed on the upper surface 3 x of the lid 3 and are connected 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 screws 211.

  FIG. 3 is a perspective view of the power supply main body 4 according to the embodiment as viewed from the right side, and FIG. 4 is a perspective view of the power supply body 4 as viewed from the left side. FIG. 5 is a perspective view of the power supply main body 4 as viewed from below. 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. And a relay circuit 7 that controls charging / discharging conduction of the power supply device body 4.

  At least one single cell 50 among the plurality of single cells 50 has a facing surface facing a fastening member 440 described later, and an electrode terminal 510 provided on the facing surface. Here, it is assumed that all the unit cells 50 have electrode terminals 510 on the facing surface.

  Each of the plurality of single cells 50 has an outer prismatic metal exterior having the opposing surface on which the electrode terminal 510 is provided and the opposite surface as the upper surface and the bottom surface. In addition, the plurality of single cells 50 has a surface having a large area among the side surfaces as a main surface (main surface 53 in FIGS. 10A and 10B), and arranged in one horizontal row and four vertical columns so that the main surfaces face each other. An arrayed stack 5 is formed.

  In the stack 5, each unit cell 50 is laid down so that the upper surface of the unit cell 50 is in front of the stack 5, and the front and rear surfaces (longitudinal side surfaces) that are the main surfaces of the unit cell 50 are the left and right sides of the stack 5. The left and right side surfaces (side surfaces in the short direction) of the unit cell 50 correspond to the top surface and the bottom surface of the stack 5 respectively. That is, the surface facing the fastening member 440 is the upper surface of the unit cell 50 and corresponds to the front surface of the stack 5.

  The plurality of unit cells 50 constituting the stack 5 are connected to each other at terminals of different polarity among the electrode terminals 510 of the stack 5 by bus bars 520 made of copper, aluminum, alloys thereof, or other conductive metals. By the connection of the bus bar 520, 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 510 of the cells 50 positioned 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 an assembled battery holder 410, a second beam member 420, a third beam member 430, and a fastening member 440.

  The assembled battery holder 410 is a member having a pair of clamping plates arranged so as to further sandwich each of the pair of main surfaces located on the outermost side of the column formed by the plurality of unit cells 50 arranged. The second beam member 420 is a member located on the bottom surface of the stack 5, and the third beam member 430 is a member located on the top surface of the stack 5. The fastening member 440 is a member that faces the front surface of the stack 5 and is sandwiched between a pair of clamping plates of the assembled battery holder 410.

  Further, as shown in FIG. 5, the pair of sandwiching plates of the assembled battery holder 410 are connected to the second beam member 420 at their lower ends, and as shown in FIGS. To be 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 screw 211 shown in FIG. 2 is fastened to the second beam member 420 via the through holes 422.

  Further, each edge of 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.

  The control circuit 6 and the relay circuit 7 are a management circuit that manages operations related to charging / discharging of an assembled battery 470, which will be described later, which is a battery body of the power supply device 1, that is, an electric device for charging / discharging the assembled battery 470, It is disposed on the assembled battery 470.

  Specifically, 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. Yes. 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, the outer shape of the stack 5 is held by the restraining means in the power supply device main body 4. For this reason, the storage container which consists of the container main body 2 and the cover part 3 does not need to be the structure provided with the mechanical strength for hold | maintaining the shape of the stack 5. FIG. 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 body can be easily processed, and can be adapted to the standard of an existing storage battery. In particular, by creating a container body in the same shape as a lead storage battery that has conventionally used a synthetic resin casing, the power supply device 1 of the present embodiment can be used to replace a ready-made product. Can be easily realized. 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 part which comprises the power supply device 1 mentioned above is demonstrated along the assembly process of the power supply device 1. FIG.

[Configuration of battery pack holder]
First, an assembled battery holder constituting the assembled battery included in the power supply main body 4 of the power supply 1 will be described.

  FIG. 6 is a perspective view showing the configuration of the assembled battery holder 410 according to the embodiment. 7 and 8 are perspective views showing configurations of the assembled battery holder 410 and the second beam member 420 according to the embodiment.

  As shown in FIG. 6, the assembled battery holder 410 connects the edges of a pair of opposing rectangular holding plates 411R and 411L and the holding plates 411R and 411L as described above. The first beam member 417 is a member having a U-shaped outer shape as viewed from above.

  Further, the pair of sandwiching plates 411R and 411L and the first beam member 417 are formed as different portions of the bent metal plate. Specifically, 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 right angles.

  Hereinafter, each part will be described. The sandwiching plate 411 </ b> R includes a tab 414 that is formed on an edge located on the upper surface side of the power supply device body 4 so as to protrude on a surface parallel to the upper surface of the stack 5, and the tab 414 has a through hole 414 a. It is open.

  The sandwiching plate 411R includes a tab 411a formed at 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. A nut 411a1 communicating with the through hole 422 shown in FIG. 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, tabs 412a are formed so as to protrude from the edge of the sandwiching plate 411R located on the front side of the power supply device 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 therefore the tab 412b faces only a part of the tab 412a.

  Further, through holes 415a and 415b are opened on the main surface of the sandwiching plate 411R and adjacent to the edge near the upper surface of the power supply device main body 4, and the power supply device main body is on the main surface. Through holes 415 c and 415 d 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 located near the front surface of the power supply device main body 4, and the through holes 415 a and 415 c are located near the back surface of the power supply device main body 4.

  Similarly, through holes 416a and 416b are opened at positions on the main surface of the sandwiching plate 411L and adjacent to the edge near the top surface of the power supply device body 4. In addition, a through hole 416d is opened at a position adjacent to the edge near the tab 412b on the main surface of the sandwiching plate 411L, and a through hole is formed at a position adjacent to the base of the first beam member 417. A hole 416c is opened.

  Next, the first beam member 417 includes a plate-like beam member 417 a provided near the top surface of the power supply device body 4 and a plate-like beam member 417 b provided near the bottom surface of the power supply device body 4. ing. Further, on the surfaces of the beam member 417a and the beam member 417b, oval convex portions 417a1 and 417b1 along the extending direction are formed, respectively. In addition, the convex parts 417a1 and 417b1 are formed by rolling a steel plate, and therefore, the back side (not shown) is a concave part 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 thereof. A through hole 422 communicating with the nut 411a1 described above is opened on the tab 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, as shown in FIG. 5, the back surface 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 hook 411b of the assembled battery holder 410 is inserted into the slit 424 of the second beam member 420, and the tab 411a and the tab 423 are slid so that the nut 411a1 and the through hole 422 are aligned. Thereby, the key portion of the hook 411b is fitted into the slit 424, and the connection between the assembled battery holder 410 and the second beam member 420 is completed.

  Here, the angle between 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 sandwiching plates 411R and 411L, a first beam member 417, and a second beam member 460. It has an inner wall formed by the main surface 421 of the beam member 420. Then, the first beam member 417 and the second beam member 420 are connected to the adjacent edges of the sandwiching plates 411R and 411L, so that the outer shape of the hexahedron whose two adjacent surfaces are open is formed. Have.

  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 positioned between the positive and negative electrode terminals 510 is provided on the upper surface 51 of the unit cell 50 constituting the front surface of the stack 5. FIG. 9 is a perspective view showing the configuration of the assembled battery holder 460 according to the embodiment.

  Here, FIGS. 10A and 10B show the arrangement of the unit cells 50 in the assembled battery holder 460. 10A and 10B are perspective views showing the unit cell 50 arranged in the assembled battery holder 460 according to the embodiment.

  As shown in FIG. 10A, the unit cell 50 is mounted in the 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. 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 again to FIG. 9, when the cells 50 are placed in the assembled battery holder 460 to be arranged, the pair of sandwiching plates 411 </ b> R are arranged in the direction along the arrangement direction (X-axis direction in the drawing). And 411L. Further, a second beam member 420 is provided below (Y-axis minus direction in the figure), and a first beam member 417 is provided in the depth direction (Z-axis plus direction in the figure).

  For this reason, the movement and posture of the unit cell 50 are regulated in any of three directions orthogonal to each other in the space by the pair of sandwiching plates 411R and 411L, the first beam member 417, and the second beam member 420. The 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 fix the unit cells 50 temporarily, and 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 can be absorbed, and the stack 5 can be stably held in the assembled battery holder 460.

  Next, the third beam member 430 is attached to the assembled battery holder 460 in the state in which the stack 5 is housed on the upper surface side of the stack 5. 11 and 12 are perspective views showing configurations of the assembled battery holder 460 and the third beam member 430 according to the embodiment.

  As shown in FIG. 11, 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 431. Has been. 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 431 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 by this.

  Here, as shown in FIG. 12, the fixing position of the third beam member 430 is the upper edge of the pair of clamping plates 411R and 411L, and the fixing position of the second beam member 420 is the pair of clamping plates 411R. And the lower edge of 411L. That is, the second beam member 420 and the third beam member 430 face each other, and the stack 5 is sandwiched therebetween.

  Thus, in the unit cell 50 constituting the stack 5, all surfaces other than the upper surface 51 are covered with the respective parts of the assembled battery holder, and directions other than the linear direction (Z-axis minus direction in the figure) from the bottom surface to the upper surface 51. Movement in is regulated. Therefore, the stack 5 can change the posture around the Y axis or the Z axis in the drawing to 360 ° while holding the unit cell 50, and the upper surface 51 of the unit cell 50 is around the X axis in the drawing. The attitude can be changed by 180 ° so that is oriented in the positive direction of the Y axis, and handling becomes possible. In particular, the stack 5 can be moved so that the upper surface 51 of the unit cell 50, the back surface of the stack 5, and the sandwiching plates 411R and 411L become the upper surface of the stack 5, and attachment work of each member described later can be easily performed. It becomes possible.

  As described above, according to the present embodiment, the assembled battery 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 holder 460, the position of the unit cells 50 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.

  However, the present invention is not limited to the above configuration. For example, the assembled battery holder 460 may be implemented as the assembled battery holder 410 alone or a combination of the assembled battery holder 410 and either the second beam member 420 or the third beam member 430. Even if it is this structure, the workability | operativity at the time of battery pack preparation is ensured.

  The assembled battery holder 410 is formed by rolling and bending a single metal plate with the pair of sandwiching plates 411R and 411L and the first beam member 417. The sandwiching plate 411R, the sandwiching plate 411L, and the first beam member 417 may be realized as separate members and connected by welding or the like. If the pair of sandwiching plates 411R and 411L and the first beam member 417 are formed by bending one metal plate, the pair of sandwiching plates 411R and 411L and the first beam member 417 Can be easily produced.

  In addition, the angle formed by the adjacent first beam member 417 and the second beam member 420 is a right angle, but this is because the shape of the assembled battery 470 disposed 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.

  Further, the convex portions 417a1 and 417b1, the concave portion 421a and the convex portion 430a are all oval shapes along the extending direction of the member, but may be any shape such as a circular shape or a rectangular shape, and the number may be arbitrary. It may be a number.

  Further, the convex portions 417a1 and 417b1, the concave portion 421a and the convex portion 430a all have a convex surface on one surface of the member and a concave surface as an inverted shape on the other surface, but the concave surface on the one surface, It is good also as a structure which is a convex surface in the said other surface. When the surface of the member that contacts the inner wall of the storage container is a convex surface, the contact area of the storage container with the container main body 2 can be reduced, and the container main body 2 receives heat generated by the operation of the power supply main body 4. 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 heat generated by the stack 5 The influence on other parts can be reduced. According to the present embodiment, it is possible to properly use the uneven arrangement according to the output of the stack 5, the use of the power supply device 1, and the like, which is more preferable.

[Configuration of assembled battery]
Next, a configuration for fastening the stack 5 held by the assembled battery holder 460 to complete the assembled battery will be described.

  13 to 16 are perspective views for explaining the configuration of the assembled battery according to the embodiment. 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 tray that holds the wire harness, and is a rectangular insulating member whose outer shape corresponds to the entire front surface of the stack 5. Specifically, the harness tray 450 is a plate member made of synthetic resin, and a window provided on the front surface of the harness tray 450 for exposing the electrode terminals 510 of the unit cells 50 to the outside. 454 and a window 451 for exposing the safety valve 530 to the outside are provided. That is, a plurality of windows 454 are provided corresponding to each of the electrode terminals 510 of the plurality of single cells 50, and a plurality of windows 451 are provided corresponding to each of the safety valves 530 of the plurality of single cells 50. .

  Further, on the surface of the harness tray 450 and between the window 451 and the window 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 positions of the unit cells 50 constituting the stack 5.

  Further, a rib 452a that is a first protrusion and a rib 452b that is a second protrusion are provided on the lower and upper ends of the window 451, respectively. The ribs 452a and the ribs 452b are arranged along the arrangement direction of the stack 5, and form a pair of guides.

  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 of the fixing rods 453, respectively. The wire harnesses 8 a and 8 b are harnesses including signal lines between the control circuit 6 and the relay circuit 7.

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

  Next, as illustrated in FIG. 15, the fastening member 440 is disposed between the tab 412 a and the tab 412 b of the assembled battery holder 460. The fastening member 440 is fixed to the pair of clamping plates 411R and 411L by being fixed to the tabs 412a and 412b, respectively. That is, 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 tab 412a and the tab 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 tab 412a. In the drawing, the other end face located at the blind spot has the same configuration.

  Accordingly, as shown in FIG. 16, the fastening member 440 is arranged to face each of the plurality of unit cells 50 along the arrangement direction of the plurality of unit cells 50 arranged, and a pair of sandwiching plates 411R. And the plurality of unit cells 50 are fastened to 411L.

  And each surface including the upper surface 51 is covered with each beam member and the fastening member 440 of an assembled battery holder of the cell 50 which comprises the stack 5. FIG. 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 harness tray 450 is provided between the fastening member 440 and the plurality of single cells 50. The harness tray 450 has ribs 452a and 452b which are adjacent to at least one side surface of the fastening member 440 and are disposed along the side surface and project toward the fastening member 440. ing.

  Here, the rib 452a is adjacent to the side surface on the lower side in the vertical direction of the fastening member 440 and disposed along the side surface in a state where the surface facing the fastening member 440 of the unit cell 50 is arranged in parallel with the vertical direction. Has been. Further, the rib 452b is disposed along the side surface and adjacent to the side surface on the upper side in the vertical direction of the fastening member 440 in a state where the facing surface is disposed in parallel with the vertical direction.

  The present embodiment having the above 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 tab 412a and the tab 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 in a state of being fixedly positioned between the ribs 452a and 452b.

  As described above, by using the harness tray 450 including the ribs 452a and the ribs 452b, the fastening member 440 does not require a separate jig, and the pair of holding plates 411R and 411R of the assembled battery holder 460 can be easily obtained. Therefore, it is possible to shorten the time required for producing the assembled battery 470 and improve productivity.

  Moreover, since the rib 452a which is a 1st projection part is formed along the lower side surface of the fastening member 440, the fastening member 440 can be arrange | positioned simply using the rib 452a. Further, since the rib 452b as the second protrusion is further formed along the upper side surface of the fastening member 440, the upper and lower side surfaces of the fastening member 440 are sandwiched between the ribs 452a and 452b. The fastening member 440 can be easily arranged.

  Moreover, since the completed assembled battery 470 can fasten the stack 5 by an assembled battery holder using a light and thin plate-like metal plate, it can be made smaller and lighter than the conventional assembled battery.

  In the above description, the ribs arranged on the harness tray 450 are configured by two rows of the ribs 452a and the ribs 452b, but may be configured to include only one of the ribs. In this case, it is preferable when the stack 5 is laid down and the harness tray 450 is directed 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. .

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

  However, the present invention is not limited to the above configuration. The assembled battery holder 410 has tabs 412a and 412b protruding from the edge ends of the pair of sandwiching 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 clamps a fastening member. However, when the structure is provided with a tab, the sandwich 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 solid 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 upper surface of the unit cell may coincide with the upper surface of the assembled battery.

[Configuration of fastening member]
Next, the structure of the fastening member for completing the assembled battery 470 by fastening the stack 5 held by the assembled battery holder 460 will be described.

  FIGS. 17A to 18B are perspective views for explaining the configuration of the fastening member 440 used in the assembled battery 470 according to the embodiment.

  First, as shown in FIGS. 17A and 17B, the fastening member 440 is a bar-like member formed by processing a steel plate into a box shape, and like the one end face 442a shown in FIG. 15, the other end face 442b The through hole 442b1 is opened. In addition, a cylindrical discharge end 441 whose end face forms an opening is provided on the upper portion of the through hole 442b1.

  Further, as shown in FIG. 17A, a cavity is formed inside the fastening member 440, and an outer circular opening 444 communicating with the inside of the member is provided on the main surface 443 opposite to the front surface of the stack 5. ing. At least one single cell 50 of the plurality of single cells 50 has a safety valve 530 on the surface facing the fastening member 440, and the opening 444 is connected to the single cell 50 via the window 451 of the harness tray 450. The safety valve 530 is directly opposed. Here, all the unit cells 50 have safety valves 530 on the surface facing the fastening member 440, and openings 444 are formed corresponding to the respective safety valves 530.

  An annular packing 335 made of synthetic rubber or the like is provided around the opening 444. The packing 335 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 shown in FIG. 15, a nut 442a2 coaxial with the through-hole 442a1 is fixed to the back surface of the end surface 442a of the fastening member 440, and the bolt 440a is fastened thereby. A similar configuration is also provided on the other end surface 442b.

  The present embodiment having the above configuration is characterized in that the fastening member 440 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 441. As shown in FIG. 5, the discharge end 441 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.

  Further, when the fastening member 440 is disposed so as to face the upper surface 51 of the cells 50 arranged with the upper surface 51 having the electrode terminals 510 lying down, the following effects are obtained. That is, in the unit cell 50, when gas is generated due to decomposition of the electrolytic solution and the internal pressure rises and the safety valve 530 opens, the electrolytic solution may be discharged from the safety valve 530 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 is the thickness of the inner wall. It is more preferable to make it larger than the thickness of the inner wall 440x in the short direction perpendicular to the parallel plane. Thereby, the cross-sectional area of the member in the direction perpendicular to the fastening direction of the bolt 440a can be increased to ensure the strength in the fastening direction, and the size of the cavity can be secured to improve the performance as a gas discharge pipe.

  Further, as shown in FIG. 18B, the inner wall of the fastening member 440 may be provided with ribs 440z1 and 440z2 extending along the longitudinal portion and reaching the back surfaces of the end surfaces 442a and 442b. Similarly to the above, 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.

  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 it has a cavity communicating with the safety valve 530 and the lid portion 3 of the single battery 50. In addition, the outer shape of the safety valve 530 of the unit cell 50 and the shape of the opening 444 of the fastening member 440 corresponding to the outer shape may be arbitrary, such as a rectangular shape or a rectangular shape.

  The assembled battery holder 410 has tabs 412a and 412b protruding from the edge ends of the pair of sandwiching plates 411R and 411R, and the fastening member 440 is fastened between the tabs 412a and 412b. The tabs 412a and 412b may be omitted, and the through holes may be directly opened in the sandwiching plates 411R and 411R to sandwich the fastening member 440. However, when the tabs 412a and 412b are provided, the sandwiching plates 411R and 411R themselves are reduced in size, and the weight of the assembled battery 470 is realized, 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 411R and 411R 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. Can be performed in a balanced manner at both ends of the fastening member 440.

  In addition, the discharge end 441 is configured to be adjacent to the tab 412b. However, the tab 412b may be provided with a through hole or a gap so as to protrude through the tab 412b. The surface of the end surface 442b near the discharge end 441 is also in surface contact with the tab 412b. 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 upper surface of the unit cell may coincide with the upper surface of the assembled battery.

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

[Management circuit (electric device) layout]
Next, the arrangement of a management circuit (electric device) that is management means for causing the assembled battery 470 to function as a power supply device that can be charged and discharged will be described.

  19 and 20 are perspective views for explaining the arrangement of the management circuit (electric device) of the power supply device according to the embodiment.

  First, as shown in FIG. 19, the control circuit 6 is arranged on the sandwiching plate 411 </ b> R that is the right side surface of the assembled battery 470. At this time, the control circuit 6 and the clamping plate 411R are connected via through holes 415a, 415b, 415c and 415d provided on the clamping 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 sandwiching plate 411 </ b> L that is the left side surface of the assembled battery 470. The relay circuit 7 and the clamping plate 411L are connected via the through holes 416a to 416d of the clamping plate 411L shown in FIGS. The relay circuit 7 and the assembled battery 470 are electrically connected to each other by connecting the connecting member 710 to the positive electrode terminal 511a of the stack 5 through the through hole 710a.

  Here, as shown in FIGS. 19 and 16, the through holes 415a to 415d are opened on hemispherical protrusions 415a1 to 415d1 formed by punching on the sandwiching plate 411R. In addition, annular packings 415a2 to 415d2 made of synthetic rubber are provided around the through holes 415a to 415d, respectively. In addition, since it has the same structure also about the through-holes 416a-416d of the clamping board 411L, detailed description is abbreviate | omitted.

  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 a nut for fastening the bolt on the control circuit 6 side in the deep part thereof Is fixed. In addition, in FIG. 6, the structure of this recessed part and corresponding nuts 416a3-416d3 were shown as the back surface of the clamping 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. Then, bolts 640a and 640b provided at the lower end of the base 620, a bolt 640c provided above the base 620 and another bolt (not shown as a blind spot by the circuit board 630 in the drawing) are penetrated. Each of the holes 415d, 415c, 415b, and 415a can be connected. FIG. 21 is an exploded perspective view showing the configuration of the control circuit 6 of the power supply device 1 according to the embodiment.

  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. The bolts 740a and 740b provided on the right side surface of the base 720, the bolt 740c provided on the left side surface, and another bolt (not shown as a blind spot by the base 720 in the drawing) 416b, 416d, 416c, and 416a can be connected to each other. FIG. 22 is an exploded perspective view showing the configuration of the relay circuit 7 of the power supply device 1 according to the embodiment.

  In the present embodiment having the above 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. Features.

  Hereinafter, the connection between the control circuit 6 and the clamping 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 upper surface of the sandwiching plate 411R. The through holes 415b and 415d form a column adjacent to the edge of the sandwiching plate 411R near the tab 412a. The through holes 415d and 415c form a row adjacent to the edge near the bottom surface of the sandwiching plate 411R. The through holes 415c and 415a form a column adjacent to the edge of the holding plate 411R near the back surface.

  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 rises due to overcharge or the like and the stack 5 expands and the outer shape of the assembled battery holder 410 is deformed, the deformation starts from the center on the pair of sandwiching plates 411R and 411L. It is considered that the largest appears in the direction toward the outside along the arrangement direction of the stack 5. The edge of the sandwiching plate 411R 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. It is.

  And when it deform | transforms so that the surface of the clamping board 411R may protrude from the center O, the stress accompanying a deformation | transformation of the clamping board 411R will be applied to the control circuit 6 located in the center of the clamping board 411R.

  At this time, as shown in the schematic diagram of FIG. 23A, when the control circuit 6 is fixed by bolts 415a and 415d so as to straddle the center O of the sandwiching 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 of the control circuit 6 from the holding plate 411R surface may occur. 23A to 23C are schematic diagrams for explaining the arrangement of the control circuit 6 of the power supply device 1 according to the embodiment.

  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 surface of the clamping plate 411R, the surface of the clamping plate 411R is deformed. However, the base 620 moves so as to follow the deformation.

  The example shown in FIG. 23C shows a state in which the bolts 415a and 415b (not shown) are fixed in parallel with the center O on the same side. 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 sandwiching plate 411R. Therefore, one end of the control circuit 6 can be displaced as a free end. ing.

  As a result, it is possible to prevent the stress when the sandwiching plate 411R is deformed from being applied to the control circuit 6, and to realize the highly reliable power supply device 1.

  However, the present invention is not limited to the above configuration. In the above description, the fixing position between 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 411R or 411L. Here, the center may be defined based on the shape of the sandwiching plate 411R or 411L, but is not necessarily limited to that determined from the shape of the sandwiching plate 411R or 411L. For example, the center may be defined as a region including an intersection of diagonal lines of the through holes that are spaced apart from each other between the sandwiching plates 411R or 411L. Further, the center may be defined as the location where the deformation is the largest detected by an industrial test or a simulation or the like in which a sample of the assembled battery 470 is prepared in advance.

  The control circuit 6 or the relay circuit 7 may be configured to be fixed only at the center. As shown in FIG. 23B, even when the fixing is performed only at the center O, the stress when the sandwiching plate 411R or 411L is deformed does not apply to the control circuit 6 or the relay circuit 7.

  The electric device arranged on the sandwiching plate 411R or 411L is not limited to the control circuit 6 or the relay circuit 7, and may be a circuit 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 the layout as described above. Of the through holes 415a to 415d, only one through hole may be used for fixing.

[Configuration of management circuit (electric device)]
Next, the structure of the control circuit 6 and the relay circuit 7 which comprise the management circuit (electric device) which is the management means of the power supply main body 4 is demonstrated.

  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, in the control circuit 6, a circuit board 630 on which a circuit element 631 is mounted is mounted on a base 620 made of synthetic resin (made of an insulating material). Further, 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 circuit board 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. That is, the wall bodies 622a to 622d are made of an insulating material, and are disposed on the sides of the components constituting the circuit board 630 that is an electrical device.

  Further, above the base 620, plate-like connecting members 610 and 640 made of copper, aluminum, an alloy thereof, or other conductive metal for connecting to the assembled battery 470 that is the battery main body of the power supply device 1 are provided. And 650 are provided. The connection member 610 connected to the electrode terminal 511b on the negative electrode side of the assembled battery 470 via the through hole 610a is further connected to the 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 (made of an insulating material). 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. In other words, the wall body is made of an insulating material, and is disposed on the side of the components constituting the relay circuit 7 that is an electrical device. 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 positive electrode side electrode terminal 511a of the battery pack 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 present embodiment having the above 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, the control circuit 6 includes wall bodies 622 a to 622 c arranged around the circuit board 630 such as wall bodies 622 a and 622 b formed on the periphery of the control circuit 6. Further, the heights of the wall bodies 622 a to 622 c are higher than the heights of the parts constituting the control circuit 6. That is, the walls 622a to 622c upstanding from the main surface 621 surround the circuit board 630, and the height H1 from the main surface 621 is greater than the total height h1 of the circuit element 631 including the thickness of the circuit board 630. Is also getting bigger. 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.

  Therefore, the wall bodies 622a to 622c serve as a barrier against entry of foreign matters from the outside, and when the control circuit 6 shown in FIG. 19 is mounted on the assembled battery 470 or shown in FIG. 2 or FIG. When the power supply device body 4 is stored in the container 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.

  Further, since the wall bodies 622a to 622d are insulating members, it is possible to insulate the parts constituting the electric device such as the circuit element 631 from other members. In particular, the wall 622d serves as an insulating coating that covers the outside of the connection members 610 and 640 through which a large current flows.

  Further, as shown in FIG. 24, the wall bodies 622a to 622d have their tips opposed to the inner wall of the container body 2 when the power supply device body 4 is housed in the container body 2. Therefore, the wall bodies 622a to 622d serve as cushioning materials that prevent 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.

  Furthermore, as shown in FIGS. 24 to 26, ribs 220a to 220c, which are protrusions made of synthetic resin, stand upright from the wall surface and extend toward the center of the container, on the inner wall of the container body 2 except for the bottom surface. The rib 220b provided on the right side wall particularly faces the control circuit 6 when the power supply device body 4 is stored. That is, the inner wall of the container body 2 is formed with ribs 220b that extend to face the wall bodies 622a to 622d. 24 to 26 are perspective views for explaining the configuration of the container body 2 of the storage container of the power supply device 1 according to the embodiment.

  The rib 220b extends from the opening 2x toward the bottom surface on the inner wall of the container body 2, and the tip of the rib 220b and the tip of the wall body 622a or 622c intersect each other when viewed from the facing direction. Specifically, as shown in FIG. 24, the rib 220b is disposed so that the tip thereof is orthogonal to the tip of the wall bodies 622a and 622c when viewed from the X-axis direction. As described above, the wall bodies 622a and 622c are arranged orthogonal to the rib 220b, so that the wall bodies 622a and 622c and the rib 220b come into contact at least at the time of swinging, thereby further ensuring impact resistance. It is possible.

  Note that the tip of the rib 220b and the tip of the wall 622a or 622c are not limited to being orthogonal to each other, and may intersect at a predetermined angle. Even in this case, since the tip of the rib 220b and the tip of the wall body 622a or 622c intersect, when the power supply device 1 vibrates or swings due to an external force, the tip of the rib 220b and the tip of the wall body 622a or 622c And the circuit element 631 which is a component of the electric device can be protected.

  Moreover, as long as the front-end | tip of the rib 220b and the front-end | tip of the wall body 622a or 622c are arrange | positioned in the position which overlaps seeing from an opposing direction, you may arrange | position so that it may become parallel. Even in this case, the effect of protecting the circuit element 631 can be obtained by contacting the tip of the rib 220b with the tip of the wall body 622a or 622c.

  As shown in FIG. 22, the relay circuit 7 also has wall bodies 722 a to 722 c formed on the periphery of the relay circuit 7, and the height of the wall bodies 722 a to 722 c is a component constituting the relay circuit 7. Higher than the height of That is, 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. Further, the tip of the wall body faces the inner wall of the container body 2. Further, a rib 220a is formed on the inner wall of the container body 2 so as to extend facing the wall body. Further, the tip of the rib 220a and the tip of the wall body intersect each other when viewed from the facing direction. For this reason, the relay circuit 7 has the same effect as the control circuit 6 described above.

  As described above, according to the present embodiment, in the power supply apparatus having a battery, a wall body higher than the height of the component is disposed on the side of the component constituting the electrical device. The part can be protected. That is, even when the electrical device is stored in the storage container and the electrical device is protected, the electrical device may be damaged if the storage container is deformed, but the electrical device is protected by the wall body. can do. For this reason, according to the said power supply device, it is possible to protect each circuit which comprises a management circuit or an electrical device, and to improve the yield at the time of manufacture, and the durability at the time of use.

  Further, the control circuit 6 and the relay circuit 7 which are electrical devices are arranged on a sandwiching plate that sandwiches both side surfaces of the stack 5. For this reason, the said electric device can be easily arrange | positioned on the power supply device main body 4 by fixing the said electric device to the said clamping board.

  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 base 620 or 720. The surface 621 or 721 may not be provided, and only the wall body may be used. In this case, the circuit board 630 or the relay main body 730 is in direct contact with the holding plate 411R or 411L, 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.

  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 main body 730, but may be formed only partially. Even in this case, the effect of preventing the collision with the inner wall of the storage container can be sufficiently obtained.

  Further, the wall bodies 622a to 622d and the wall bodies 722a to 722c have been described as standing upright from the bottom surface, but the wall bodies 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 the wall body is made of synthetic resin, it is easy to create the wall body, and similarly, the compatibility with the ribs 220a and 220b of the resin container body 2 is good, More preferred. The electric device arranged on the sandwiching plate 411R or 411L is not limited to the control circuit 6 or the relay circuit 7, and may be a circuit that performs an operation unrelated to charging / discharging of the stack 5.

  In the above description, the power supply main body 4 includes the assembled battery 470 having a plurality of single cells 50 as the battery main body. However, the single power cell 50 may be included as the battery main body. Even in this case, the same effects as described above can be obtained.

[Configuration of storage container]
Next, the configuration of the storage container that stores the power supply main body 4 will be described.

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

  As shown in FIG. 25, ribs 220 a to 220 c are formed on the inner wall of the container body 2. The ribs 220 a to 220 c are protruding portions that protrude to face the surface of the assembled battery 470. In addition, the tip of the protrusion is disposed away from the fastening member 440. Specifically, the protrusion is formed on a surface different from the surface facing the fastening member 440 of the inner wall of the container body 2.

  That is, the inner wall of the container body 2 is provided with ribs 220a to 220c made of synthetic resin that 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 that extend from the opening 2x of the container body 2 toward the bottom surface. The ribs 220a to 220c are formed by injection molding at the same time as the container body 2 body, and are integrated with the container body 2 seamlessly. It has a structured.

  Next, as shown in FIG. 24, the ribs 220a and 220b are provided on the inner wall of the container body 2 on the surface facing at least one of the pair of clamping plates 411R or 411L of the assembled battery holder 410. It has been. That is, in a state where the power supply device 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 device main body 4 and directly faces the relay circuit 7, and the rib 220 b is connected to the power supply device main body 4. It is located on the right side and faces the control circuit 6. Further, the rib 220 c faces the back surface of the power supply main 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 1 can be achieved, 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 of the present 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 portion 3 and the container main body 2 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 the power supply device main body 4. Create a state of intermittent or continuous contact with As a result, vibration is also transmitted to the power supply device body 4, and a pair of clamping plates 411 </ b> R and 411 </ b> L of the assembled battery holder 410 directly constraining the stack 5, particularly the connection portion of the members of the power supply device 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 1 of the present 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-described configuration, the ribs 220a to 220c are described as standing upright with respect to the inner side surface of the container body 2 except for a part shown in the figure. However, the ribs 220a to 220c stand up with an acute angle or an obtuse angle with respect to the inner side surface. It is also possible to use this mode.

  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 with respect to the stretching direction. However, the ribs 220a to 220c may have a tapered shape in which the width gradually increases from the opening 2x toward the bottom surface. 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.

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

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

  In addition, as shown in FIG. 26, the rib is configured not to be provided over the entire inner wall 221 facing the front surface of the power supply device body 4, but the tip of the rib is disposed apart from the fastening member 440. If it is, it is good also as a structure which arrange | positions a rib in the inner wall 221. FIG. In other words, the rib may not be provided only in the portion of the inner wall 221 that faces the fastening member 440 that has the highest heat, and the inner wall 221 is fastened so that the tip of the rib is spaced apart from the fastening member 440. It is good also as a structure which arrange | positions a rib in the part facing the member 440. FIG. Also by this, the impact resistance and heat resistance of the power supply device 1 can be improved.

[Configuration of lid]
Next, the configuration of the lid 3 as a storage container for storing the power supply main body 4 and the configuration of the assembled battery holder 460 will be described.

  27, 28, and 33 are perspective views for explaining the configuration of the lid 3 of the power supply device 1 according to the embodiment. FIG. 29 and FIG. 32 are plan views of relevant parts for explaining the configuration in the vicinity of the positive electrode terminal 3a of the power supply device 1 according to the embodiment. 30 and 31 are main part plan views for explaining the configuration in the vicinity of the negative electrode terminal 3b of the power supply device 1 according to the embodiment.

  Hereinafter, with reference to the perspective views of FIG. 27 and FIG. 28, while explaining a further creation procedure of the power supply device 1 of the present embodiment, the lid 3 of the storage container in the power supply device 1 of the present embodiment and The configuration of the assembled battery holder 460 will be described.

  First, as shown in FIG. 27, the lid 3 is put over the container body 2 in a state where the power supply body 4 is housed 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 container main body 2 in a state of being fitted to the container main body 2. 230a. The lid 3 and the container body 2 are coupled by inserting and fastening the screw 320 into the through hole 311a.

  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. The end of the discharge pipe 442 extended from the fastening member 440 is drawn out from the window 310b.

  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 the operation through the window 310a. By being fixed at 341, electrical and mechanical connections are completed. 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 with a bolt 331 by an operation through the window 310b. Complete electrical 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 terminal 330 via the connection member 640 of the control circuit 6 and the connection member 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 3 a and the power supply main body 4 is performed by connecting a connection member 710 having one end fixed to the positive electrode terminal 511 a via the relay main body 730 of the relay circuit 7. 340 is connected. 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. In FIG. 31 and FIG. 32, although omitted for the sake of explanation, a lid portion is actually provided between the negative electrode terminal 3b and the connection terminal 330, and actually between the positive electrode terminal 3a and the connection terminal 340. 3 intervenes.

  Next, the lid 3 and the power supply device body 4 are connected. That is, as shown in FIG. 28, a through hole 311 b is opened at a site on the upper surface 3 x of the lid 3 and closer to the back surface of the storage container. And the through-hole 311b corresponds to the through-hole 418a opened in the tab 418 which the power supply device main body 4 accommodated in the container main body 2 has in the state in which the lid 3 is fitted to the container main body 2.

  By inserting the screw 320 into the through hole 311b and the through hole 418a and fastening with the nut, 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 320 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.

  In the present embodiment having the above-described configuration, the power supply device main body 4 stored in the storage container is fixed to both the lid portion 3 and the container main body 2 by using the assembled battery holder 460. It is characterized by that.

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

  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.

  Further, 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 processes can be reduced, and a power supply device with excellent productivity can be realized.

  Further, in the present embodiment, as shown in FIGS. 2 and 28, the power supply device 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 510 of the unit cells 50, so that the upper surface and the bottom surface of the power supply device body 4 itself are configured by symmetrical side surfaces 52 of the unit cells 50. Correspondingly, the tab 418 and the tab 423 are also arranged symmetrically with respect to the power supply main 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.

  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. I explained. However, the direction of the power supply device body 4 in the storage container may be reversed upside down. Therefore, the assembled battery 470 included in the power supply device body 4 is fixed to the container body 2 via the first beam member 417, 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 1 only needs to be able to fix the assembled battery 470 on the upper surface and the lower surface in the storage container, and is not limited by the specific contents of the configuration of the assembled battery to be fixed.

  In the above description, the lid 3 and the assembled battery holder 410 are connected via the tab 418 of the first beam member 417. However, the lid 3 and the tab 414 of the pair of sandwiching 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 present embodiment, the battery pack holder 460, the harness tray 450, the fastening member 440, the storage container including the lid portion 3 and the container body 2 are provided in whole or in part. As a result, productivity can be improved.

  Further, according to the power supply device 1 of the present embodiment, all or a part of the management means configured 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. In addition, durability and versatility can be improved.

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

  In the above description, as shown in FIG. 9, the stack 5 exposes the assembled battery 470 on the inner wall of the assembled battery holder 460 and the entire upper surface 51 provided with the electrode terminals 510 as the side surface of the stack 5. Arranged to be arranged. However, the configuration of the assembled battery 470 is not limited to this, and may be a configuration in which 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. It is assumed that the configuration is stored. However, the power supply device 1 may have a configuration in which the upper surface of the unit cell 50 and the upper surface of the power supply device body 4 coincide. In short, the power supply device 1 is not limited by the posture of the assembled battery 470 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. It was based on the fastening of the bolt with respect to a connection member. However, any technical means such as welding, soldering, adhesion with a conductive adhesive, or the like may be used to connect these parts. Moreover, you may use a flexible electric wire instead of a connection member.

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

  In the above description, the cell 50 is a non-aqueous electrolyte secondary battery typified by a lithium ion secondary battery. A battery or other various secondary batteries may be used. The single battery 50 may be a primary battery. Further, the unit cell 50 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 unit cell 50 is a general term for elements capable of storing electricity, and is not limited by its name or a 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 container body 2 are made of the same kind of synthetic resin, but may be made of different materials. The lid 3 or the container body 2 may be made of metal or other material.

  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 a stack of 4 rows and columns of 4 cells, but may be a stack of any number of combinations in both length and width.

  In the above embodiment, 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 and the control circuit 6 and Although the relay circuit 7 is provided in common, the present invention may be realized as an aspect provided with only a part of the above-described configurations.

  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 durability of the power supply device, and is useful in, for example, a power supply device using a secondary battery.

DESCRIPTION OF SYMBOLS 1 Power supply device 2 Container main body 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 Single cell 51 Upper surface 52 Side surface 53 Main surface 210 Through hole 211 Screw 220a to 220c Rib 221 Inner wall 230 Base 230a Hole 310a, 310b Window 311a, 311b Through hole 312a, 312b Lid member 320 Screw 330, 340 Connection terminal 331, 341 Bolt 410, 460 Assembly battery holder 411R, 411L Plate 411a, 412a, 412b, 414, 418 Tab 411a1, 416a3-416d3 Nut 411b Hook 413a, 413b, 414a, 415a-415d, 416a-416d, 418a
Through hole 415a1 to 415d1 Protrusion 415a2 to 415d2 Packing 417 First beam member 417a and 417b Beam member 417a1 and 417b1 Convex portion 420 Second beam member 421 Main surface 421a Concave portion 422 Through hole 423 Tab 424 Slit 430 Third beam member 430a Convex part 431 Tab 432 Through hole 433 Bolt 440 Fastening member 440a Bolt 440x, 440y Inner wall 440z1, 440z2 Rib 441 Discharge end 442 Discharge pipe 442a, 442b End surface 442a1, 442b1 Through hole 443 Main surface 445 452a, 452b Rib 453 Fixed rod 455a Tall height 455b Tall height 470 Battery pack 510, 511a, 511b Electrode terminal 520 Bus bar 530 Safety valve 610, 640, 650 Connection member 610a Through hole 620 Base 621 Main surface 622a to 622d Wall body 630 Circuit board 631 Circuit element 632 Harness terminal 640a to 640c Bolt 650a Nut 710, 711 Connection member 710a Through hole 711a Main surface 720 722a to 722c Wall body 730 Relay body 740a to 740c Bolt

Claims (8)

A battery body having at least one unit cell;
A relay circuit disposed on the battery body;
A wall body disposed on the side of the components constituting the relay circuit,
The height of the wall is higher than the height of the part;
Power supply. The wall is formed on the periphery of the relay circuit,
The power supply device according to claim 1. The wall is made of an insulating material.
The power supply device according to claim 1 or 2. The power supply device further includes:
A storage container for storing the battery body and the relay circuit;
The front end of the wall body faces the inner wall of the storage container.
The power supply device according to any one of claims 1 to 3. Ribs extending opposite to the wall body are formed on the inner wall of the storage container.
The power supply device according to claim 4. The tip of the rib and the tip of the wall intersect each other when viewed from the facing direction.
The power supply device according to claim 5. The storage container is made of synthetic resin.
The power supply device according to any one of claims 4 to 6. The battery body has a stack composed of a plurality of the unit cells arranged, and a pair of clamping plates that sandwich both side surfaces of the stack,
The relay circuit is disposed on at least one of the pair of clamping plates.
The power supply device according to any one of claims 1 to 7.

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