CN213071264U

CN213071264U - Battery layering and battery pressure equipment subassembly, group battery and battery package thereof

Info

Publication number: CN213071264U
Application number: CN202021769007.7U
Authority: CN
Inventors: 邓月飞; 桂昊; 邓江南; 刘晨南; 姜斌; 候书毅
Original assignee: Dongguan Tafel New Energy Technology Co Ltd; Jiangsu Tafel New Energy Technology Co Ltd; Jiangsu Tafel Power System Co Ltd
Current assignee: Jiangsu Zenio New Energy Battery Technologies Co Ltd
Priority date: 2020-08-22
Filing date: 2020-08-22
Publication date: 2021-04-27
Anticipated expiration: 2030-08-22

Abstract

The utility model discloses a battery layering and battery pressure equipment subassembly, group battery and battery package thereof. A plurality of batteries are arranged into a battery square row, a battery pack is constructed by the battery press-mounting assembly, and then a plurality of battery packs are assembled into a battery pack. The battery press-fitting assembly comprises two end structure plates and two battery pressing strips. The battery depression bar is formed by bending a metal plate body and comprises a first strip plate, a second strip plate, an end folded plate and a fixed wing plate. The first strip plate is vertical to the second strip plate; the end folding plate is connected to the end part of the first strip plate; the fixed wing plate is connected with the end folding plate. The battery pressing strip is pressed on the battery square row, so that the first strip plate, the second strip plate and the end folding plates are respectively clung to the side surface, the top surface and the end surface of the battery square row. The fixed wing plate is connected with the end part structural plate through bolts. The utility model discloses the battery pack is joined in marriage simply, and the battery layering is trilateral layering, presses respectively and holds trilateral of battery side row, makes the battery fixed firm in the battery box.

Description

Battery layering and battery pressure equipment subassembly, group battery and battery package thereof

Technical Field

The utility model relates to a battery package, in particular to battery fixing technology of no module battery package.

Background

CTP (cell To pack) technology is popular in the current power battery pack. The battery pack adopting the CTP technology is a non-module battery pack, and a plurality of batteries are accommodated in a battery box to directly form the battery pack. Since the CTP technology cancels the battery module intermediate member, the restriction of movement in the vertical direction of the battery becomes a problem. Although the battery box has a box cover which can limit the vertical movement of the battery, some circuits, such as a collecting board, are usually arranged between the battery box cover and the battery. In order to avoid the acquisition board being impacted by the batteries moving in the vertical direction, the batteries need to be fixed in the vertical direction of the batteries. On the other hand, a battery temperature regulation system may be generally arranged in the battery box. The batteries are required to be tightly attached to the heat exchange plate of the regulating system, which also requires the batteries to be fixed in the vertical direction so that the batteries can be tightly attached to the heat exchange plate.

Disclosure of Invention

The utility model discloses the problem that will solve: and the batteries in the power battery pack are fixed in the vertical direction.

In order to solve the above problem, the utility model discloses a scheme as follows:

the battery depression bar comprises a first strip plate, a second strip plate, an end folded plate and a fixed wing plate; the first strip plate and the second strip plate are strip-shaped plate bodies; the long edges of the first strip plate and the second strip plate are connected and vertical to each other, so that the first strip plate and the second strip plate form a long strip-shaped structure with an L-shaped cross section; the end folded plate is provided with two blocks; the two end folding plates are respectively connected with two ends of the first strip plate and are vertical to the first strip plate and the second strip plate; the second strip plate and the end folded plate are positioned on the same side of the first strip plate; two fixed wing plates are arranged; the two fixed wing plates are positioned on the same plane, are respectively connected with the end folding plates and are vertical to the end folding plates; the fixed wing plate is vertical to the first strip plate and parallel to the second strip plate; the first strip plate, the second strip plate and the end folded plate are positioned on the same side of the fixed wing plate; the fixed wing plate is provided with a first mounting hole.

Further, according to the battery depression bar of the present invention, the first strip plate, the second strip plate, the end folded plate and the fixed wing plate are formed by bending a metal plate; and insulation buffer layers are arranged on the inner sides of the first strip plate, the second strip plate and the end folding plates.

Further, according to the utility model discloses a battery layering, insulating buffer layer adopts epoxy.

Further, according to the utility model discloses a battery layering, the metal plate body is aluminum plate.

The battery press-mounting assembly comprises two end structure plates and two battery pressing strips; the end structure plate comprises a main body plate and a fixed plate; the main body plate is vertically arranged; the fixing plate is connected with the bottom edge of the main body plate and is vertical to the main body plate, so that the main body plate and the fixing plate form an L-shaped structure; step surfaces are arranged at two ends of the top edge of the main body plate; a second mounting hole is formed in the step surface; the second mounting hole is matched with the first mounting hole; and a third mounting hole is formed in the fixing plate.

Further, according to the utility model discloses a battery pressure equipment subassembly is provided with the strengthening rib between the main part board of end structure board and the fixed plate.

Further, according to the utility model discloses a battery pressure equipment subassembly still includes the heat transfer board.

The battery pack comprises a battery and the battery press-mounting assembly; the battery is a square battery, and positive and negative electrode posts of the battery are positioned on the top surface; a plurality of batteries are arranged on the heat exchange plate in a close fit manner and are arranged into a square battery row with a square structure; the positive and negative pole posts of the battery are respectively positioned on two sides of the central axis in the arrangement direction of the battery; the two end structure plates are respectively positioned at two ends of the battery arrangement direction and are oppositely arranged; the main body plates of the end structure plates are vertical to the arrangement direction of the batteries and are tightly attached to the batteries, so that the two end structure plates are pressed at two ends of the battery square row; the two battery pressing strips are parallel to the arrangement direction of the batteries, are respectively positioned at two sides of a central axis of the arrangement direction of the batteries and are oppositely arranged, so that a first strip of the battery pressing strips is tightly attached to the side surface of the battery square row, a second strip of the battery pressing strips is tightly attached to the top surface of the battery square row, end folded plates of the battery pressing strips are tightly attached to the end surface of the battery square row, and fixed wing plates of the battery pressing strips are arranged on the step surface of the end structure plate; and the first mounting hole on the fixed wing plate and the second mounting hole on the step surface are fastened through bolts, so that the end structure plates at two ends of the battery pressing bar are fixed respectively.

Further, according to the utility model discloses a group battery is provided with the strengthening rib between the main part board of end structure board and the fixed plate.

According to the utility model discloses a battery pack, include the battery box and accept in a plurality of foretell group battery of battery box.

The technical effects of the utility model are as follows:

1. the battery layering is trilateral layering, combines tip structural slab, presses the trilateral of holding battery side row respectively for the bottom plate of battery box makes battery side row all restrict in vertical direction, horizontal vertically.

2. The utility model discloses a battery pack assembly is simple, and the battery is fixed firmly in the battery box.

Drawings

Fig. 1 is a schematic perspective view of a battery pack according to an embodiment of the present invention.

Fig. 2 is an exploded schematic view of the embodiment of the battery pack of fig. 1.

Fig. 3 is a schematic perspective view of a battery pressing bar according to an embodiment of the present invention.

Fig. 4 is a schematic structural view of a prefabricated panel of an embodiment of a battery depression bar.

Fig. 5 is a cross-sectional view of an embodiment of a battery bead.

Figure 6 is a schematic structural view of an embodiment of an end structural panel.

Fig. 7 is a schematic structural view of an embodiment of a battery pack.

Wherein the content of the first and second substances,

1 is a battery pressing bar, 2 is an end structure plate, 3 is a heat exchange plate, and 4 is a battery;

11 is a first strip, 12 is a second strip, 13 is an end folding plate, 14 is a fixed wing plate, 15 is a first mounting hole, and 16 is an insulating buffer layer;

100 is a prefabricated plate, 101 is a main body part, 102 is an edge part, 103 is an edge end part, 103 is an end convex part, 105 is a prefabricated hole, 106 is a prefabricated hole;

21 is a main body plate, 211 is a step surface, 212 is a second mounting hole, 213 is a step groove, 214 is a top edge, 22 is a fixing plate, 221 is a third mounting hole, and 23 is a reinforcing rib;

41 is a positive electrode pole and a negative electrode pole, and 49 is a battery square bar;

61 is a battery box, 611 is a bottom plate, 62 is a battery pack, and 602 is a battery press-fitting assembly;

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 7, a battery pack includes a battery case 61 and a plurality of battery packs 62. The battery pack 62 is housed in the battery case 61. The battery pack 62, as shown in fig. 1 and 2, includes a battery press-fitting assembly 602 and a plurality of batteries 4. The battery press-fitting assembly 602 comprises two battery press-fitting strips 1, two end structure plates 2 and a heat exchange plate 3. The battery 4 is a prismatic battery with positive and negative electrode posts 41 on the top surface. The batteries 4 are adhered to the heat exchange plate 3 through heat conducting glue and are arranged in a row of battery square rows 49 through mutual adhesion between the surfaces. The heat exchange plate 3 is disposed on the bottom plate 611 of the battery case 61. A temperature regulation system is usually arranged between the heat exchange plate 3 and the bottom plate 611, for example, a liquid cooling pipe and/or a heating plate can be arranged between the heat exchange plate 3 and the bottom plate 611 to realize temperature regulation of the battery 4.

The battery square row 49 is of a square structure, and specifically, the top surface of the battery square row 49 is composed of the top surfaces of the batteries 4; the sides of the battery square rows 49 consist of the small sides of the batteries 4; the end face of the battery square row 49 is composed of large side faces of the batteries 4 located at both ends in the arrangement direction of the batteries 4. The side surfaces of the battery square row 49 are parallel to the arrangement direction of the batteries 4, are positioned at the two sides of the central axis of the arrangement direction of the batteries 4, and are vertical. The end face of the battery square row 49 is perpendicular to the arrangement direction of the batteries 4 and is vertical. The positive and negative electrode posts 41 of the battery 4 are respectively positioned on both sides of the central axis of the arrangement direction of the battery 4. The two end structure plates 2 are respectively located at two ends of the arrangement direction of the batteries 4 and are oppositely arranged, that is, the two end structure plates 2 are respectively located at the end face of the battery square row 49 and closely attached to the end face of the battery square row 49. The battery layering 1 is in a strip-shaped structure. The two battery pressing strips 1 are parallel to the arrangement direction of the batteries 4, are respectively positioned on two sides of the central axis of the arrangement direction of the batteries 4 and are oppositely arranged. The two battery battens 1 are respectively pressed on the corners between the side surfaces and the top surface of the battery square row 49. The two ends of the battery pressing bar 1 are respectively connected with the end structure plates 2.

Battery bead 1, as shown in fig. 3, includes a first strip 11, a second strip 12, end flaps 13, and a securing flap 14. The first strip 11 and the second strip 12 are strip-shaped plates. The first strip 11 and the second strip 12 are connected to each other at long sides and are perpendicular to each other, so that the first strip 11 and the second strip 12 constitute an elongated structure having an L-shaped cross section, see fig. 5. The end folding plates 13 are two, and the two end folding plates 13 are respectively connected with two ends of the first strip plate 11 and are vertical to the first strip plate 11. End flap 13 is also perpendicular to second panel 12. The second panel 12 and the end flap 13 are both located on the same side of the panel of the first panel 11. The securing flap 14 has two pieces. The two fixing wing plates 14 are located on the same plane and are respectively connected with the end folding plates 13 and are vertical to the end folding plates 13. The fixed wing 14 is perpendicular to the first strip 11 and parallel to the second strip 12. The first strip 11, the second strip 12 and the end flap 13 are all located on the same side of the body of the fixed wing 14. The stationary wing plate 14 is provided with a first mounting hole 15.

In this embodiment, the battery depression bar 1 is formed by bending a metal plate. Firstly, a metal plate body is cut into a certain shape to be used as a prefabricated plate, and then the prefabricated plate is bent. The metal plate body is preferably an aluminum plate. Fig. 4 shows an end structure of the prefabricated panel, wherein 100 is a prefabricated panel cut out of a metal plate body, and the prefabricated panel 100 includes a main body part 101, a rim part 102, a rim end part 103, and an end-convex part 105. The end convex portion 105 is provided with a prepared hole 106. The battery molding 1 is manufactured by bending the main body part 101, the edge part 102, the edge end part 103 and the end convex part 105 at 90 degrees along the dotted line of fig. 4.

The end structure plate 2, as shown in fig. 6, includes a main body plate 21 and a fixing plate 22. The main body plate 21 is vertically arranged; the fixing plate 22 is connected to the bottom edge of the main body plate 21 and perpendicular to the main body plate 21, so that the main body plate 21 and the fixing plate 22 form an L-shaped structure. A reinforcing rib 23 is provided between the main body plate 21 and the fixing plate 22. The main body plate 21 has stepped surfaces 211 at both ends of the top edge 214. The step surface 211 is a platform surface which passes through the two sides of the main body plate 21 and is lower than the top edge 214 at both ends of the top edge 214 of the main body plate 21 after the step grooves 213 are provided. The step surface 211 is provided with a second mounting hole 212. The second mounting hole 212 is matched with the first mounting hole 15. The fixing plate 22 is provided with a third mounting hole 221. The second mounting hole 212 may be a threaded hole or a through hole. When the second mounting hole 212 is a through hole, the long bolt penetrates through the second mounting hole 212 and then is meshed with an insert nut arranged on the box body, so that the bolt connection with the battery pressing strip 1 is realized.

The end structure plates 2 are pressed against the end faces of the battery square row 49, specifically, the main body plates 21 of the end structure plates 2 are perpendicular to the arrangement direction of the batteries 4 and pressed against the batteries 4, so that the two end structure plates 2 are pressed against both ends of the battery square row 49. The end structure plate 2 is bolt-fastened to the bottom plate 611 of the battery case 61 through the third mounting hole 221 in the fixing plate 22. The battery pressing strip 1 presses the corner between the side surface and the top surface of the battery square row 49, specifically, the inner side of the first strip 11 of the battery pressing strip 1 is tightly attached to the side surface of the battery square row 49, the inner side of the second strip 12 of the battery pressing strip 1 is tightly attached to the top surface of the battery square row 49, and the inner side of the end flap 13 of the battery pressing strip 1 is tightly attached to the end surface of the battery square row 49. The fixing wing plate 14 of the battery molding 1 is disposed on the stepped surface 211 of the end structure plate 2. The two ends of the battery pressing bar 1 are connected with the end structure plates 2, that is, the first mounting hole 15 on the fixing wing plate 14 of the battery pressing bar 1 and the second mounting hole 212 on the step surface 211 are fastened through bolts, so that the two ends of the battery pressing bar are respectively fixed with the end structure plates 2.

In addition, in the present embodiment, as shown in fig. 5, the inner sides of the first strip 11, the second strip 12 and the end flap 13 of the battery strip 1 are further provided with an insulating buffer layer 16. The inner sides of the first strip 11, the second strip 12 and the end flaps 13 are the sides of the battery strip 1 which are in contact with the batteries 4. The insulating buffer layer 16 is preferably made of epoxy resin. In the actual preparation of the battery bead 1, the metal bead formed by bending the prefabricated panel 100 is taken out after being immersed in the epoxy resin solution, and after the solvent of the epoxy resin solution is volatilized, a layer of insulating buffer layer 16 formed by epoxy resin is laid on the surface of the whole metal bead. Or the epoxy resin solution may be coated on the inner side of the metal bead formed after the prefabricated panel 100 is bent, and after the solvent of the epoxy resin solution is volatilized, the insulating buffer layer 16 formed by the epoxy resin is laid on the inner side surface of the metal bead. The thickness of the insulating buffer layer 16 is 0.3 mm-1.0 mm.

In addition, in the present embodiment, the batteries 4 of the battery square row 49 are bonded with the batteries 4 by structural adhesive, and those skilled in the art understand that a cushion pad may also be disposed between the batteries 4 of the battery square row 49 and the batteries 4, and a cushion pad may also be disposed between the end face of the battery square row 49 and the end structural plate 2. The cushion pad and the battery 4 can be bonded by structural adhesive.

Claims

1. The battery batten is characterized by comprising a first batten (11), a second batten (12), an end folded plate (13) and a fixed wing plate (14); the first strip plate (11) and the second strip plate (12) are strip-shaped plate bodies; the long edges of the first strip plate (11) and the second strip plate (12) are connected and vertical to each other, so that the first strip plate (11) and the second strip plate (12) form a long strip-shaped structure with an L-shaped cross section; two end folding plates (13) are arranged; the two end folding plates (13) are respectively connected with two ends of the first strip plate (11) and are vertical to the first strip plate (11) and the second strip plate (12); the second strip plate (12) and the end folded plate (13) are positioned on the same side of the first strip plate (11); two fixed wing plates (14) are provided; the two fixed wing plates (14) are positioned on the same plane, are respectively connected with the end folding plates (13) and are vertical to the end folding plates (13); the fixed wing plate (14) is vertical to the first strip plate (11) and is parallel to the second strip plate (12); the first strip plate (11), the second strip plate (12) and the end folded plate (13) are all positioned on the same side of the fixed wing plate (14); the fixed wing plate (14) is provided with a first mounting hole (15).

2. The battery batten according to claim 1, wherein the first strip (11), the second strip (12), the end flap (13) and the fixing wing plate (14) are formed by bending a metal plate body; and insulating buffer layers (16) are arranged on the inner sides of the first strip plate (11), the second strip plate (12) and the end folding plates (13).

3. The battery molding according to claim 2, wherein the insulating buffer layer (16) is made of epoxy resin.

4. The battery molding of claim 2, wherein the metal plate body is an aluminum plate.

5. A battery press-fitting assembly comprising two end structural plates (2) and two battery press-fittings as claimed in any one of claims 1 to 4; the end structure plate (2) comprises a main body plate (21) and a fixing plate (22); the main body plate (21) is vertically arranged; the fixing plate (22) is connected with the bottom edge of the main body plate (21) and is vertical to the main body plate (21), so that the main body plate (21) and the fixing plate (22) form an L-shaped structure; step surfaces (211) are arranged at two ends of the top edge of the main body plate (21); a second mounting hole (212) is formed in the step surface (211); the second mounting hole (212) is matched with the first mounting hole (15); the fixing plate (22) is provided with a third mounting hole (221).

6. A battery press-fitting assembly as claimed in claim 5, wherein reinforcing ribs (23) are provided between the main body plate (21) and the fixing plate (22) of the end structure plate (2).

7. A battery press pack assembly as claimed in claim 5, further comprising heat exchanger plates (3).

8. A battery pack comprising a battery (4) and the battery press-fit assembly of claim 7; the battery (4) is a square battery, and positive and negative electrode posts (41) of the battery are positioned on the top surface; a plurality of batteries (4) are arranged on the heat exchange plate (3) in a close fit manner and are arranged into a square battery row (49) with a square structure; the positive and negative pole posts (41) of the battery (4) are respectively positioned on two sides of the central axis of the arrangement direction of the battery (4); the two end structure plates (2) are respectively positioned at two ends of the arrangement direction of the batteries (4) and are oppositely arranged; the main body plates (21) of the end structure plates (2) are vertical to the arrangement direction of the batteries (4) and are tightly attached to the batteries (4), so that the two end structure plates (2) are pressed at two ends of a battery square row (49); two battery layering are on a parallel with the array orientation of battery (4) to be located the both sides of battery (4) array orientation axis respectively, and set up relatively, make: a first strip plate (11) of the battery pressing strip is tightly attached to the side surface of the battery square row (49), a second strip plate (12) of the battery pressing strip is tightly attached to the top surface of the battery square row (49), an end folding plate (13) of the battery pressing strip is tightly attached to the end surface of the battery square row (49), and a fixing wing plate (14) of the battery pressing strip is arranged on a step surface (211) of the end structure plate (2); the first mounting hole (15) on the fixed wing plate (14) and the second mounting hole (212) on the step surface (211) are fastened through bolts, so that the structural plates (2) at the two ends of the battery pressing bar are respectively fixed.

9. The battery pack according to claim 8, wherein a reinforcing rib (23) is provided between the main body plate (21) and the fixing plate (22) of the end structure plate (2).

10. A battery pack characterized by comprising a battery case (61) and a plurality of battery packs according to claim 8 housed in the battery case (61).