TW201421776A - Battery box for vehicle battery - Google Patents

Abstract

The present invention provides a battery box for vehicle battery, which comprises two joining plates and two side plates by aluminum extrusion for together defining an accommodation space. The front and rear sides of an external side of each joining plate are respectively recessed with a dovetail engaging slot extending from left to right. Each side plate comprises a side wall portion vertically configured on one side in the front and rear of the joining plates, two overlapping wall portions respectively protruded on the top edge and the bottom edge of the side wall portion and overlapping onto the joining plates in the up and down direction, and two engaging portions respectively protruded from the overlapping wall portions toward the joining plates, and the engaging portions are respectively slidingly inserted and position-limited in the engaging slots located at the same side as the joining plates. With the engaging connection structure between the aluminum extrusion joining plate and side plates, not only the battery box may be conveniently manufactured for cost reduction, but also the assembly of the whole battery box may be simplified.

Description

Battery case for car battery

The present invention relates to a battery case, and more particularly to a battery case for a battery for a vehicle.

With the continuous improvement of power storage technology, the lead-acid battery for traditional vehicles has been gradually replaced by lithium batteries. The lithium batteries for vehicles are usually made up of a plurality of lithium batteries connected in series and in parallel. The lithium batteries are arranged in a row. The battery case is fixed in the structure and integrated into a battery for a vehicle. However, the current structural design of such battery cases is quite complicated, the manufacturing cost is high and it is difficult to assemble, and since the number of lithium batteries used in the battery for the vehicle is large, the inner wiring of the entire battery case is usually messy and not easy to carry out. Inspection, therefore, there is still room for improvement in the battery case structure of a battery for a battery using a lithium battery.

Accordingly, it is an object of the present invention to provide a battery case for a battery for a vehicle that is easy to assemble and manufacture.

Another object of the present invention is to provide a battery case for a vehicle battery that can make the wiring of the battery pack wire more neat and easy to overhaul.

Therefore, the battery case of the battery for a vehicle of the present invention is suitable for mounting and fixing a battery module. The battery case comprises two aluminum-extruded joint plates which are vertically spaced apart from each other, and two aluminum-extruded side plates which are respectively spaced apart from each other between the front side and the rear side of the joint plates, and the joint plates and the same The side plates cooperate to define a receiving space for housing the battery module. The front side and the rear side of each of the joint plates facing away from the outer side of the other joint plate are respectively recessed with a left and right extension Stretched in the shape of a tail-shaped card. Each side plate includes a side wall portion which is disposed between the one side of the front side of the connecting plate, and two side portions respectively project from the top side and the bottom side of the side wall portion to the other side plate and are vertically opposed to the outer side of the joint plate a side wall portion, and two second and second extending portions respectively extending from the overlapping wall portions toward the connecting plates, and the card fitting portions are respectively located on the same side of the front and rear sliding inserts before the joining plates The card is embedded in the slot.

The effect of the invention: through the design of the snap-fit structure between the aluminum extrusion type joint plate and the side plate, in addition to facilitating the manufacture, the utility model can reduce the cost, and the assembly of the entire battery case is also more convenient.

The foregoing and other technical aspects, features and advantages of the invention are apparent from the description of the preferred embodiments of the invention.

As shown in FIG. 1 and FIG. 2 and FIG. 3, a preferred embodiment of the battery case for a battery for a vehicle of the present invention is suitable for housing a battery module 900. The battery module 900 includes a plurality of battery cells 901 disposed upright. And a wire 902 (shown in FIG. 4) for connecting the cells 901.

The battery case comprises two aluminum-extruded joint plates 3 extending horizontally and horizontally opposite to each other, and two aluminum-extruded side plates extending left and right and facing up and down to face each other between the front side and the rear side of the joint plates 3 4, and two upper and lower horizontally spaced apart between the side plates 4 and used to sandwich the cell holders 5 of the cell module 900 up and down, and the bonding plates 3 and the side plates 4 cooperate to define A receiving space 30 for housing the cell holder 5 and the cell module 900. In the following description, the joint plates 3 and the side plates 4 are The side facing away from the one of the housing spaces 30 is defined as the outer side, and the side facing the one of the housing spaces 30 is defined as the inner side.

Each of the joint plates 3 includes two joint wall portions 31 extending left and right and spaced back and forth, and a body portion 32 extending left and right between the front and rear side edges of the joint wall portions 31. The outer side surfaces of the joint wall portions 31 are respectively recessed with a dovetail-shaped engaging groove 311 extending along the longitudinal direction thereof and having a narrowed shape, and a longitudinally extending left and right extending along the longitudinal direction thereof and laterally communicating with each other The card slot 311 faces away from the screw hole 312 on one side of the other joint wall portion 31.

The main body portion 32 is convex toward the outer side of the other joint plate 3 toward the outer side of the joint plate 3, so that the outer side surface of the main body portion 32 and the outer side surface of the joint wall portion 31 have a height difference. The outer side surface of the 32 is provided with two tail-shaped vertical expansion card slots 321 which are parallel to each other and extend along the long and left sides thereof.

The side plates 4 are respectively spanned between the two joint wall portions 31 on the front side of the joint plate 3 and the rear joint wall portions 31. Each of the side plates 4 is erected on the side of the joint plate 3 so as to extend left and right. The side wall portions 41 and 2 of the side wall protrude from the top side and the bottom side of the side wall portion 41 toward the other side plate 4, and the wall portion 42 of the joint wall portion 31 of the same side is vertically opposed to each other. The limiting ribs 43 respectively protruding from the inner side surface of the side wall portion 41 are respectively protruded in parallel, and are respectively protruded from the opposite inner side surfaces of the overlapping wall portions 42 and are respectively clamped to the adjacent connecting walls. The card fitting portion 44 of the portion 31.

The side wall portion 41 is recessed toward the outer side surface of the other side plate 4 to define a dovetail lateral expansion card slot 411 extending along the longitudinal direction thereof. The overlapping portions 42 respectively shield the opening of the engaging groove 311 of the engaging wall portion 31, and the outer side The faces are respectively contoured to the outer side of the corresponding body portion 32, and respectively cooperate with the corresponding side portions of the body portion 32 and the joint wall portion 31 to define a glue filling groove 40 extending along the long sides thereof.

The limiting ribs 43 are respectively disposed on the top side portion and the bottom side portion of the inner side surface of the side wall portion 41, and the pair of the two limiting rib portions 43 are matched to each other. A dovetail limiting chute 431 extending left and right and opening toward the receiving space 30. The card fitting portions 44 are in the shape of a dovetail, and are respectively slidably inserted into the engaging grooves 311 of the engaging wall portions 31.

As shown in FIG. 2, FIG. 3 and FIG. 4, the cell holders 5 are vertically spaced apart and left and right, respectively, and are constrained in the two laterally opposite limiting slots 431, and are bridged and fixed between the side plates 4. Each of the cell holders 5 includes a fixing plate portion 51 extending left and right and having a plurality of upper and lower penetrating core positioning holes 511, and a plurality of right and left spaced protrusions respectively protrude from the front side of the fixing plate portion 51. The connecting block portion 52 of the rear side and the plurality of wire fixing portions 53 which are spaced apart from each other on the top surface of the fixing frame portion 51 and interposed between the cell positioning holes 511.

The cell positioning holes 511 and the wire fixing portions 53 are arranged in a matrix, and each of the cell positioning holes 511 can be inserted and positioned by a battery core 901. The wire fixing portions 53 are respectively partially radially protruding. The battery core 901 that is inserted into the cell positioning hole 511 is abutted and is located in the cell positioning hole 511, and the wire fixing portion 53 is located at the outer opening of the cell positioning hole 511. The outer side surface is recessed with two wiring grooves 531 which are connected in a staggered manner, and the wiring grooves 531 can be used for the wire 902 to be embedded in the limit.

The joint block portions 52 are respectively elongated and outwardly flared, and The engaging block portions 52 located on the front side and the rear side of the fixing frame portion 51 are respectively defined in a limiting sliding slot 431 of the side plate 4 on the same side.

When the battery case is used to mount the battery cells 901 of the battery module 900, the two latching portions 44 of the upper and lower facing sides of each of the side plates 4 are respectively slidably locked to the same side of the connecting plates 3 In the card insertion groove 311, the joint plates 3 are connected to each other between the side plates 4 at intervals. Then, the cells 901 are vertically inserted and positioned in the upper and lower cell positioning holes 511 of the cell holder 5, and the cell holders 5 are positioned up and down by the cell holders 5 to position the cells 901. Then, the wires 902 for electrically connecting the cells 901 are disposed in the wiring grooves 531 of the wire fixing portions 53.

Then, the cell holders 5, which are provided with the cell module 900, are slid into the housing space 30, so that the connecting blocks 52 on the front side and the rear side of the cell holders 5 are respectively The corresponding sliding limit is located in the limiting slot 431 of the same side panel 4, and the assembly of the battery box and the battery module 900 is completed, which is quite convenient, and the wire 902 can be disposed on the wire fixing portion 53. In this way, the wires 902 in the battery case are arranged neatly, which is convenient for maintenance.

In the implementation, since the connecting plates 3 are respectively provided with two screw holes 312, one end plate (not shown) may be respectively disposed on the left end and the right end of the battery case, and the plurality of screws penetrating the end plates are further disposed. The end plates are respectively fixed to the left and right ends of the battery case by screwing and fixing the screw holes 312 respectively.

In addition, since the overlapping portions 42 of the side plates 4 cooperate with the matching plates 3 to define four filling grooves 40, in order to improve the structural stability of the battery case and improve the waterproofness of the battery case, In the filling grooves 40 The waterproof glue is filled in the middle, but it is not limited to this.

Furthermore, since the outer side surfaces of the joint plates 3 are respectively recessed with the vertical expansion card slots 321 and the outer side surfaces of the side plates 4 are respectively recessed with the lateral expansion card slots 411, when there are multiple vehicle batteries to be stacked When connected or used in combination, it can be inserted into the vertical expansion card slot 321 on the opposite side of the two-phase stacked battery box by other connecting members (not shown), or can be inserted by other connecting members. It is convenient to connect and connect in the lateral expansion card slot 411 on the opposite side of the battery case.

In summary, the design of the snap-fit structure between the aluminum extruded joint plate 3 and the side plate 4, in addition to facilitating the manufacture of the battery case, helps to reduce the cost, and also makes the assembly of the entire battery case easier. Further, the structural design of the cell holders 5 can be further matched, so that the cells 901 are aligned and positioned, and the wires 902 for electrically connecting the cells 901 can be arranged neatly, which is convenient for maintenance and is convenient and practical. Therefore, the object of the present invention can be achieved.

The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent.

3‧‧‧ joint plate

30‧‧‧Containing space

31‧‧‧ joint wall

311‧‧‧ card slot

312‧‧‧ screw hole

32‧‧‧ Body Department

321‧‧‧Vertical expansion card slot

4‧‧‧ side panels

40‧‧‧filling trench

41‧‧‧ Side wall

411‧‧‧ lateral expansion card slot

42‧‧‧Decked

43‧‧‧‧Limited ribs

431‧‧‧Limited chute

44‧‧‧Card inlay

441‧‧‧ protruding section

442‧‧‧slide

5‧‧‧ Battery holder

51‧‧‧Fixed plate section

511‧‧‧Cell positioning hole

52‧‧‧ joint block

53‧‧‧Wire fixing department

531‧‧‧ wiring trough

900‧‧‧Battery module

901‧‧‧ batteries

902‧‧‧ wire

1 is a perspective view of a preferred embodiment of a battery case for a vehicle battery of the present invention; FIG. 2 is an exploded perspective view of the preferred embodiment; FIG. 3 is a left side partial cross-sectional view of the preferred embodiment; Fig. 4 is a partially enlarged perspective view of the cell holder of the preferred embodiment, illustrating the case when a wire is laid on the cell holder.

3‧‧‧ joint plate

30‧‧‧Containing space

31‧‧‧ joint wall

311‧‧‧ card slot

312‧‧‧ screw hole

32‧‧‧ Body Department

321‧‧‧Vertical expansion card slot

4‧‧‧ side panels

40‧‧‧filling trench

41‧‧‧ Side wall

411‧‧‧ lateral expansion card slot

42‧‧‧Decked

43‧‧‧Limited ribs

431‧‧‧Limited chute

44‧‧‧Card inlay

5‧‧‧ Battery holder

51‧‧‧Fixed plate section

511‧‧‧Cell positioning hole

52‧‧‧ joint block

53‧‧‧Wire fixing department

531‧‧‧ wiring trough

900‧‧‧Battery module

901‧‧‧ batteries

Claims (10)

A battery case for a vehicle battery, which is suitable for accommodating a battery module, the battery case comprises: a two-aluminum extruded joint plate, the upper and lower intervals are parallel, and each of the joint plates faces away from the outer side of the other joint plate The rear side is respectively recessed with a left-right extending dovetail-shaped card slot; and the two-aluminum-extruded side plate is vertically erected to face between the front side and the rear side of the joint plate, respectively, and The joint plate cooperates to define a receiving space for housing the battery module, each side plate includes a side wall portion which is disposed vertically between the joint plates, and two side walls and a bottom side respectively disposed on the side wall portion And the upper and lower facing portions are stacked on the outer side surface of the connecting plate, and the two right and left extending portions respectively protrude from the opposite inner side of the overlapping wall portion, and the card fitting portions are respectively slidably left and right The insert is located in the card slot on the same side after the front of the joint plates. The battery case for a vehicular battery according to claim 1, wherein each of the joint plates includes two joint wall portions extending left and right and having a front-rear interval, and a convex portion is outwardly convex toward the outer side surface of the joint wall portions. And the main body portion between the opposite side edges of the wall portion, and the outer side surfaces of the joint wall portions and the outer side surface of the body portion have a height difference, and the card fitting grooves are respectively recessed on the outer side surfaces of the joint wall portions, each of The two stacked wall portions of the side plate are the outer side faces of the joint wall portion on the same side of the front and rear sides of the joint plate, and respectively cooperate with the corresponding body portion and the joint wall portion to define a longitudinal direction extending along the long side thereof. Fill the space. A battery case for a vehicle battery according to claim 2, wherein each of the joints The wall portion is provided with a screw hole extending along the long side of the long direction and laterally communicating with the card fitting groove. The battery case for a vehicular battery according to claim 2, wherein the outer side surface of the body portion of each of the engaging plates is recessed with at least one dovetail-shaped vertical expansion card slot extending along the long and left sides thereof. The battery case for a vehicular battery according to claim 4, wherein each of the side wall portions is recessed toward the outer side surface of the accommodating space, and at least one of the tail-shaped lateral expansion card slots extending along the long and left sides thereof is recessed. The battery case for a vehicle battery according to claim 1, further comprising a cell holder that is vertically connected to the side wall portions and that is vertically and horizontally opposed to each other to position the cell module. The battery case of the vehicular battery according to claim 6, wherein the side plates further comprise four limiting ribs extending from the side wall portion into the receiving space, extending from the left and right sides in parallel. The limiting ribs are matched to define a limiting chute extending from the upper and lower sides and extending left and right. The front side and the rear side of the cell holder are respectively provided with a plurality of joint blocks arranged at right and left intervals. The isoelectric core holders are respectively arranged in the limit sliding grooves of the same side side plates by the front and rear side of the joint block portions. The battery case of the vehicular battery according to claim 7, wherein the battery module comprises a plurality of cells arranged at intervals, wherein each of the cell holders is provided with a plurality of upper and lower through holes and respectively for the same The core positioning hole of the core is inserted and positioned. The battery case for the vehicle battery according to claim 8 is also suitable for installation. a plurality of wires for connecting the cells, wherein each of the cell holders further has a fixing plate portion through which the cell positioning holes are disposed, and a plurality of intervals are protruded from the fixing plate portion a wire fixing portion facing away from the side of the other cell holder, wherein the connecting block portions are respectively protruded from the front side and the rear side of the cell holder, and the surface of the wire fixing portions are respectively recessed at least one a wiring groove for positioning the wire. The battery case for a vehicle battery according to claim 9, wherein the wire fixing portions are respectively located between the equalizing core positioning holes, and the partial radial protruding resistances are respectively adjacent to the adjacent battery cells. The openings of the holes are respectively limited to the cells in the positioning holes.