CN217788696U - Tray assembly of battery and battery module - Google Patents

Abstract

The utility model relates to the technical field of batteries, specifically disclose a tray subassembly and battery module of battery, this tray subassembly of battery includes plastic support and tray, the plastic support includes frame and a plurality of fixed ring of interconnect, be equipped with spacing arch on the fixed ring, spacing arch is laminated with the lateral wall of electric core, can play the effect of location to electric core through spacing arch and fixed ring, the assembly precision is higher, plastic support mounting is in the tray, the position that corresponds fixed ring on the tray is equipped with the hole of dodging that link up, the tray subassembly of having guaranteed the battery through the tray has sufficient intensity, it is good to have guaranteed the insulating properties between the tray subassembly of electric core and battery through the plastic support, the difficult short circuit that takes place, the security performance is good, and through spacing bellied setting, the location of electric core is accurate. The utility model provides a battery module, tray assembly including a plurality of electric cores and foretell battery.

Description

Tray assembly of battery and battery module

Technical Field

The utility model relates to a battery technology field especially relates to a tray subassembly and battery module of battery.

Background

The tray structure of current battery module generally adopts plastic support or metal support, wherein, the intensity of plastic support is relatively poor, in the use of battery module, because the easy condition that produces the deformation that generates heat of electricity core, the fixed effect of electricity core is not good, and the precision of plastic support at the in-process preparation size of preparation is not high, consequently the precision is relatively poor when electricity core assembly, and use some intensity higher, during the higher material of preparation precision, cause the increase of cost, for example, metal support has better intensity, but metal support's insulating properties is relatively poor, need increase insulating film or spraying insulating layer, the manufacturing process is loaded down with trivial details, the cost is higher.

Therefore, a tray assembly for a battery and a battery module are needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a tray subassembly and battery module of battery has higher mechanical strength and good insulating properties, and the location of electric core is accurate, and the assembly precision is higher.

In order to achieve the purpose, the utility model adopts the following technical proposal:

in one aspect, the utility model provides a tray assembly of battery for fixed a plurality of electric cores, the tray assembly of this battery includes:

the plastic support comprises a frame and a plurality of fixed rings which are connected with each other, the adjacent fixed rings are connected with each other, a limiting bulge is arranged at the joint between the adjacent fixed rings, the limiting bulge comprises a cambered surface, the cambered surface is attached to the outer side wall of the battery cell, and the bottom of the battery cell is connected with the upper end surface of the fixed ring;

the tray, the plastic support sets up in the tray, the position that corresponds on the tray fixed ring is equipped with the hole of dodging that link up.

Optionally, the tray assembly of the battery includes a structural adhesive, and the structural adhesive fixedly connects the plastic support, the tray, and the battery core.

Optionally, the limiting protrusion is of a trapezoidal structure, and a V-shaped groove is formed in the side end face, which is not attached to the battery core, of the limiting protrusion.

Optionally, the fixed ring is towards tray one side is outwards extended and is had first annular lateral wall and second annular lateral wall, first annular lateral wall with the outer lane of fixed ring is connected, second annular lateral wall with the inner circle of fixed ring is connected, first annular lateral wall, second annular lateral wall with form annular between the fixed ring and store up gluey groove.

Optionally, the diameter of dodging the hole is greater than the diameter of fixed ring inner circle, just the diameter of dodging the hole is less than the diameter of fixed ring outer lane, the height of first annular lateral wall is less than the height of second annular lateral wall, the tip of first annular lateral wall with the up end butt of tray, the tip of second annular lateral wall passes dodge the hole setting, form annular flange after the tip of second annular lateral wall is buckled, annular flange with the lower terminal surface butt of tray.

Optionally, a glue inlet is formed in the first annular side wall, the glue inlet is located at the end of the first annular side wall, and the glue inlet is communicated with the annular glue storage groove.

Optionally, the lower terminal surface of tray is equipped with the strengthening rib, the strengthening rib encircles dodge the hole setting.

Optionally, the tray includes a bottom plate and a side plate connected to each other, and the avoiding hole is provided on the bottom plate.

Optionally, the upper end of the side plate extends outwards to form a flange, and a mounting portion is arranged on the upper end face of the flange.

Optionally, the outer wall of the side plate is convexly provided with a limiting block.

On the other hand, the utility model provides a battery module, including a plurality of electric cores to and the tray subassembly of the battery in the above-mentioned arbitrary scheme, it is a plurality of electric core is fixed in the tray subassembly of battery.

The utility model has the advantages that:

the utility model provides a tray subassembly of battery, this tray subassembly of battery includes plastic support and tray, the plastic support includes frame and a plurality of fixed ring of interconnect, junction between the adjacent fixed ring is equipped with spacing arch, spacing arch and fixed ring are fixed electric core jointly, spacing arch is the cambered surface with the one side of electric core contact, the laminating of cambered surface and the lateral wall of electric core, plastic support mounting is in the tray, the position that corresponds fixed ring on the tray is equipped with the hole of stepping down that link up, the plastic support, tray and electric core glue fixed connection through the structure. Through combining plastic support and tray, the tray has guaranteed that the tray subassembly of battery has sufficient intensity, and the plastic support has guaranteed that the insulating properties between the tray subassembly of electric core and battery is good, is difficult for taking place the short circuit, and the security performance is good to through spacing bellied setting, the location of electric core is accurate, and the assembly precision is higher.

The utility model provides a battery module, this battery module include a plurality of electric cores to and the tray subassembly of foretell battery, a plurality of electric cores are fixed in the tray subassembly of battery, and the intensity of the tray subassembly of battery is higher, has avoided electric core to generate heat and has produced the deformation, and the tray subassembly of battery's insulating properties is good, is difficult for the short circuit, and electric core location is accurate when the assembly, and the assembly precision is higher.

Drawings

Fig. 1 is an exploded view of a tray assembly for a battery provided in an embodiment of the present invention;

fig. 2 is a schematic structural view of a plastic bracket according to an embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

fig. 4 is a schematic structural view of the plastic bracket at another viewing angle according to an embodiment of the present invention;

FIG. 5 is a partial enlarged view of the portion B in FIG. 4;

fig. 6 is a schematic structural diagram of a tray assembly of an assembled battery provided in an embodiment of the present invention;

FIG. 7 is an enlarged view of a portion of FIG. 6 at C;

fig. 8 is a schematic structural view of a tray assembly of an assembled battery at another viewing angle according to an embodiment of the present invention;

fig. 9 is a partial enlarged view of fig. 8 at D.

In the figure:

100. a plastic bracket; 110. a frame; 120. fixing the circular ring; 130. a limiting bulge; 1301. a cambered surface; 1302. a V-shaped groove; 140. a first annular sidewall; 1401. a glue inlet; 150. a second annular sidewall; 160. an annular glue storage tank;

200. a tray; 201. avoiding holes; 210. a base plate; 220. a side plate; 221. a limiting block; 230. a flange; 231. a mounting section; 240. reinforcing ribs;

300. and (4) structural adhesive.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Where the terms "first position" and "second position" are two different positions, and where a first feature is "over", "above" and "on" a second feature, the first feature is directly over and obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

As shown in fig. 1 to fig. 3, the present embodiment provides a tray assembly of a battery, the tray assembly of the battery includes a plastic support 100 and a tray 200, the plastic support 100 is installed in the tray 200, and the plastic support 100, the tray 200 and a battery cell are fixedly connected through a structural adhesive 300. Plastic support 100 is including frame 110 and a plurality of fixed ring 120 of interconnect, fixed ring 120 is arranged along first direction and second direction array, it should be noted that, first direction is the length direction of frame 110 in this embodiment, the second direction is the width direction of frame 110, interconnect between the adjacent fixed ring 120, and junction between the adjacent fixed ring 120 is equipped with spacing arch 130, spacing arch 130 includes cambered surface 1301, the laminating of cambered surface 1301 and the lateral wall of electricity core, the bottom of electricity core is connected with fixed ring 120's up end. Two cambered surfaces 1301 are arranged on each limiting protrusion 130, the two cambered surfaces 1301 are arranged oppositely, and the two cambered surfaces 1301 are respectively attached to the side walls of the two adjacent battery cells.

Exemplarily, two adjacent rows of fixed rings 120 arranged along the first direction in this embodiment are arranged in a staggered manner, so as to enclose a triangular structure between three adjacent fixed rings 120, each fixed ring 120 is connected with six adjacent fixed rings 120, six limiting protrusions 130 are arranged at the joints of the fixed rings 120 and the six adjacent fixed rings 120, an electric core is jointly positioned by the six limiting protrusions 130 and the fixed rings 120, the side wall of the electric core can be clamped by the limiting protrusions 130, the bottom of the electric core is abutted against the upper end face of the fixed rings 120, so that the positioning and pre-fixing effects of the limiting protrusions 130 and the fixed rings 120 on the electric core are achieved, the accurate installation of the electric core is ensured, and meanwhile, the automatic arrangement of the electric core is facilitated.

In some embodiments, the frame 110 and the fixed ring 120 may be formed by injection molding, the frame 110 and the fixed ring 120 are made of plastic materials or other materials with good insulating properties, and the tray 200 is made of metal materials, so that the battery cell does not directly contact the tray 200 due to the abutting of the bottom of the battery cell and the fixed ring 120, the insulating properties are good, the short circuit is avoided, and the safety performance is high. In addition, generally speaking, the bottom of electric core all is equipped with pressure release structure, and the position that corresponds fixed ring 120 on the tray 200 is equipped with the hole 201 of dodging that link up, and pressure release structure can be dodged in the hole 201 of dodging of fixed ring 120 and tray 200 bottom, and when electric core inside appearance pressure was too high, pressure release structure can be washed away to through fixed ring 120 and dodge hole 201 outflow battery module, avoid the explosion, further guaranteed user's safety.

Optionally, in some embodiments, the tray 200 may be made of stainless steel, so as to ensure that the tray 200 has high mechanical strength, can provide good supporting effect for the plastic bracket 100, and is not easy to deform. More preferably, in some embodiments, the tray 200 may be integrally injection-molded by using an aluminum material, on one hand, the tray 200 manufactured by injection molding has a high precision, and the avoiding hole 201 on the tray 200 is accurately located, and on the other hand, the aluminum material also has a high mechanical strength, and can provide a good supporting effect for the plastic bracket 100.

Further, the plastic bracket 100, the tray 200 and the battery cell in the embodiment may be fixedly connected by the structural adhesive 300. Specifically, when the assembly, install plastic support 100 in tray 200, and make fixed ring 120 correspond the setting with dodging hole 201, then glue 300 filling with the structure in tray 200, thereby glue 300 can flow into the triangle-shaped structure that adjacent three fixed ring 120 encloses in the structure, with fixed adjacent three electric core, because all fill in every triangle-shaped structure has structure to glue 300, thereby structure is glued 300 and can be fixed with all electric cores and plastic tray, the triangle-shaped structure is favorable to shortening the bonding route that structure glued 300, the fixed strength of electric core has been increased, structure is glued 300 and also can flow into the gap between plastic support 100 and the tray 200, thereby with plastic support 100 and tray 200 fixed connection.

As an optional technical solution, the limiting protrusion 130 is of a trapezoid structure, and a V-shaped groove 1302 is disposed on a side end surface of the limiting protrusion 130, which is not attached to the battery cell. Through setting up spacing arch 130 into trapezium structure, can increase the bonding area at spacing arch 130 top under the unchangeable condition of the spacing size in the bottom of spacing arch 130 to submit the strength that electric core is in groups, it is fixed respond well, and trapezium structure's spacing arch 130 is at injection moulding's drawing of patterns in-process, deviate from the mould more easily, and product appearance is good. And the setting of V type groove 1302, on the one hand, the setting of V type groove 1302 prolongs the longest route that structural adhesive 300 flows, guarantee that structural adhesive 300 can fill the gap between the electric core completely, increase the bonding area of structural adhesive 300 and spacing arch 130, improve fixed intensity, on the other hand, the setting of V type groove 1302 has prolonged the length of spacing arch 130 along the lateral wall surface of its thickness direction, namely the length of side of the apex angle department of the triangle-shaped structure that three fixed ring 120 encloses, the creepage distance between two electric cores that two adjacent fixed ring 120 fix is the length of the width of two fixed ring 120 along its radial direction plus the apex angle department of triangle-shaped structure, thereby the creepage distance between two adjacent electric cores has been increased, electric safety has been guaranteed, in addition, the setting of V type groove 1302, the creepage distance between electric core that fixed ring 120 can be increased equally along the direction of height of spacing arch 130 and tray 200, electric safety between electric core and tray 200 has been guaranteed.

Referring to fig. 4 and 5, the fixing ring 120 extends outward toward the tray 200 to form a first annular sidewall 140 and a second annular sidewall 150, the first annular sidewall 140 is connected to an outer ring of the fixing ring 120, the second annular sidewall 150 is connected to an inner ring of the fixing ring 120, an annular glue storage groove 160 is formed between the first annular sidewall 140, the second annular sidewall 150 and the fixing ring 120, and the structural glue 300 can penetrate into the annular glue storage groove 160, so as to fixedly connect the plastic support 100 and the tray 200.

Further, the diameter of dodging hole 201 is greater than the diameter of fixed ring 120 inner circle, and the diameter of dodging hole 201 is less than the diameter of fixed ring 120 outer circle, the height of first annular lateral wall 140 is less than the height of second annular lateral wall 150, plastic support 100 installs back in tray 200, the tip of first annular lateral wall 140 and the up end butt of tray 200, the tip of second annular lateral wall 150 passes and dodges hole 201 and sets up, because the setting in annular glue storage groove 160, make and to hold more structural glue 300 between plastic support 100 and the tray 200, make the fixed of plastic support 100 and tray 200 more firm. In addition, in order to further increase the fixing strength between the plastic support 100 and the tray 200, the end of the second annular side wall 150 may be bent by hot riveting, and the end of the second annular side wall 150 is bent to form an annular flange, which can wrap the avoiding hole 201 of the tray 200 and abut against the lower end surface of the tray 200.

Referring to fig. 6 and 7, a glue inlet 1401 is arranged on the first annular sidewall 140, the glue inlet 1401 is located at an end of the first annular sidewall 140, and the glue inlet 1401 is communicated with the annular glue storage groove 160, so that the structural glue 300 can enter the annular glue storage groove 160 conveniently. Illustratively, a plurality of glue inlets 1401 may be provided, the glue inlets 1401 are uniformly distributed in the circumferential direction of the first annular sidewall 140, the glue inlets 1401 may be provided at a triangular structure surrounded by three adjacent fixed rings 120, the glue inlets 1401 are located at the sides of the triangular structure, it is ensured that the structural glue 300 can fill the gap between the tray 200 and the plastic support 100, and the overall strength of the tray assembly of the battery is improved.

Further, the tray 200 includes a bottom plate 210 and a side plate 220 connected to each other, the avoiding hole 201 is disposed on the bottom plate 210, the bottom plate 210 and the side plate 220 together form an accommodating chamber, the plastic support 100 is mounted in the accommodating chamber, an upper end of the side plate 220 extends outward to form a flange 230, and an upper end surface of the flange 230 is provided with a mounting portion 231. The mounting portion 231 may be provided as a lifting screw hole, thereby facilitating the transfer or assembly process of the tray assembly of the battery.

Referring to fig. 8 and 9, the lower end surface of the tray 200 is provided with a reinforcing rib 240, the reinforcing rib 240 is disposed around the avoiding hole 201, and the reinforcing rib 240 can avoid an annular flange formed at the end of the second annular side wall 150, so as to avoid interference with the annular flange, which causes a poor fixing effect. In some embodiments, the reinforcing ribs 240 may be in a wave shape, and by providing the wave-shaped reinforcing ribs 240, the mechanical strength of the tray 200 may be enhanced, and at the same time, the heat transfer area may also be increased, and when thermal runaway occurs in the battery cell, more heat of high-temperature gas ejected from the battery cell may be absorbed by the reinforcing ribs 240, and the heat generated by the high-temperature gas may be led out.

Preferably, the reinforcing ribs 240 and the tray 200 can be integrally injection molded, so that the processing steps of the tray 200 are reduced, the manufacturing process is simple, and the connection strength between the reinforcing ribs 240 and the tray 200 is high.

In some embodiments, a stop block 221 is protruded on an outer wall of the side plate 220 of the tray 200. Through the setting of stopper 221, conveniently fix a position the tray subassembly of battery to guarantee that the assembly precision of the tray subassembly of battery is higher.

The utility model also provides a battery module, this battery module include a plurality of electric cores to and the tray subassembly of foretell battery, a plurality of electric cores are fixed in the tray subassembly of battery, and the intensity of the tray subassembly of battery is higher, has avoided electric core to generate heat and has produced the deformation, and the tray subassembly of battery's insulating properties is good, is difficult for the short circuit, and electric core location is accurate when the assembly, and the assembly precision is higher.

It is to be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (11)

1. A tray assembly of battery for fixing a plurality of electric cores, comprising:

the plastic support (100) comprises a frame (110) and a plurality of fixed rings (120) which are connected with each other, the adjacent fixed rings (120) are connected with each other, a limiting protrusion (130) is arranged at the joint between the adjacent fixed rings (120), the limiting protrusion (130) comprises an arc surface (1301), the arc surface (1301) is attached to the outer side wall of the battery cell, and the bottom of the battery cell is connected with the upper end face of the fixed rings (120);

tray (200), plastic support (100) set up in tray (200), correspond on tray (200) the position of fixed ring (120) is equipped with the hole of dodging (201) that link up.

2. The tray assembly of the battery according to claim 1, wherein the tray assembly of the battery comprises a structural adhesive (300), and the structural adhesive (300) fixedly connects the plastic support (100), the tray (200) and the battery cell.

3. The tray assembly of the battery according to claim 1, wherein the limiting protrusion (130) is in a trapezoid structure, and a V-shaped groove (1302) is formed in the side end face, which is not attached to the battery cell, of the limiting protrusion (130).

4. The tray assembly for batteries according to claim 1, wherein a first annular sidewall (140) and a second annular sidewall (150) extend outwards from the fixing ring (120) towards one side of the tray (200), the first annular sidewall (140) is connected to an outer ring of the fixing ring (120), the second annular sidewall (150) is connected to an inner ring of the fixing ring (120), and an annular glue storage groove (160) is formed between the first annular sidewall (140), the second annular sidewall (150) and the fixing ring (120).

5. The tray assembly of battery according to claim 4, characterized in that, the diameter of dodging hole (201) is greater than the diameter of fixed ring (120) inner circle, just the diameter of dodging hole (201) is less than the diameter of fixed ring (120) outer circle, the height of first annular lateral wall (140) is less than the height of second annular lateral wall (150), the tip of first annular lateral wall (140) with the up end butt of tray (200), the tip of second annular lateral wall (150) passes dodge hole (201) and set up, form annular flange after the tip of second annular lateral wall (150) is buckled, annular flange with the lower terminal surface butt of tray (200).

6. The tray assembly of the battery according to claim 5, wherein a glue inlet (1401) is formed in the first annular side wall (140), the glue inlet (1401) is located at an end of the first annular side wall (140), and the glue inlet (1401) is communicated with the annular glue storage groove (160).

7. The tray assembly for batteries according to any one of claims 1 to 6, wherein the lower end surface of the tray (200) is provided with a reinforcing rib (240), and the reinforcing rib (240) is disposed around the avoiding hole (201).

8. The tray assembly of batteries according to any of claims 1 to 6, characterized in that the tray (200) comprises a bottom plate (210) and a side plate (220) connected to each other, the relief hole (201) being provided on the bottom plate (210).

9. The tray assembly of batteries according to claim 8, characterized in that the upper end of the side plate (220) extends outward to form a flange (230), and the upper end face of the flange (230) is provided with a mounting part (231).

10. The tray assembly for batteries according to claim 8, characterized in that the outer wall of the side plate (220) is provided with a stopper (221) thereon.

11. A battery module comprising a plurality of cells and a tray assembly for a battery as claimed in any one of claims 1 to 10, wherein the plurality of cells are secured within the tray assembly for the battery.

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