Energy storage PACK battery cell heat isolation module based on SMC composite material

Abstract

The utility model relates to the technical field of energy storage, in particular to an energy storage PACK battery cell heat isolation module based on SMC (Sheet Molding Compound) composite materials, which comprises a plurality of battery cell bodies, the same SMC heat isolation pad is connected between every two adjacent battery cell bodies in an adhesive manner, four grooves are formed in each of two sides of each battery cell body, and the SMC heat isolation pads are arranged in the grooves. A plurality of SMC heat insulation pads are arranged in the battery cell body, four convex blocks are fixedly connected to two sides of each SMC heat insulation pad, the convex blocks are clamped with the grooves, end plates are mounted on the battery cell bodies positioned at two ends, and the same fixing structure is mounted outside the plurality of battery cell bodies, the plurality of SMC heat insulation pads and the two end plates; due to the fact that the thermal insulation pad made of the SMC material has the advantages of being high in strength, resistant to high temperature, good in insulation performance and the like, thermal runaway spreading can be effectively prevented and the safety performance of the battery cell group can be improved by pasting the SMC thermal insulation pad between every two adjacent battery cells; and the accuracy of the mounting position of the SMC heat insulation pad and the mounting convenience are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the energy storage technology field, concretely to a kind of energy storage PACK electric core interval heat module based on SMC composite material. BACKGROUND

[0002] With the rapid development of energy storage technology, the safety, energy density and thermal management performance of energy storage PACK become key issues, and the heat insulation pad between the electric core plays an important role in preventing heat runaway propagation and improving the safety of battery pack. The materials commonly used in the market for heat insulation pad mainly include ceramic fiber material, aerogel material, silica gel foam and mica sheet.

[0003] However, the traditional heat insulation pad material is prone to sliding during assembly, and it is difficult to ensure the accuracy of the adhesive position of the heat insulation pad during the process of gluing the heat insulation pad and the electric core. UTILITY MODEL CONTENT

[0004] The utility model discloses a kind of energy storage PACK electric core interval heat module based on SMC composite material, since SMC material heat insulation pad has the advantages of high strength, high temperature resistance, good insulation performance etc., paste SMC heat insulation pad between two adjacent electric cores can effectively prevent heat runaway propagation and improve the safety performance of electric core group.

[0005] The utility model discloses a kind of energy storage PACK electric core interval heat module based on SMC composite material, which realizes the above-mentioned purposes by the following technical solutions, comprising a plurality of electric core bodies, SMC heat insulation pad is connected by gluing between every two adjacent electric core bodies, four recesses are provided on the two sides of the electric core body, four protrusions are fixedly connected on the two sides of the SMC heat insulation pad, the protrusion is engaged with the recess, end plate is installed on the electric core body at both ends, and the same fixing structure is installed outside a plurality of electric core bodies, a plurality of SMC heat insulation pads and two end plates.

[0006] Preferably, the inside of the SMC heat insulation pad is a honeycomb structure, and the SMC heat insulation pad is mainly composed of unsaturated polyester resin, glass fiber, flame retardant and filler.

[0007] Preferably, four positioning columns are fixedly connected on the electric core body at both ends, four positioning holes are provided on the two end plates, and the positioning column is engaged with the positioning hole.

[0008] Preferably, the end plate is provided with a foam on the side facing the electric core body, and the foam is in contact with the electric core body.

[0009] Preferably, the fixing structure comprises positioning rods, two positioning rods are fixedly connected to each of the end plates, a first steel band is clamped on each of the two positioning rods at one end, and a second steel band is clamped on each of the two positioning rods at the other end, and the second steel band is in sliding connection with the first steel band.

[0010] Preferably, the first steel band has a U-shaped cross section, the second steel band has a U-shaped cross section as a whole, and the two ends of the second steel band have a T-shaped cross section.

[0011] Preferably, a plurality of screw holes are formed in the two ends of the second steel band, and a bolt is rotatably connected to each end of the first steel band, and the bolt is in threaded connection with the screw hole.

[0012] Preferably, the inner wall of the first steel band is in abutment with the side wall of the battery cell body, and the plurality of screw holes are arranged in a linear array.

[0013] The utility model discloses the beneficial effect is: every adjacent two the battery cell body between all gluing connection has SMC heat insulation pad, the two sides of battery cell body all are equipped with four recesses, the two sides of SMC heat insulation pad all are fixedly connected with four protruding pieces, and the protruding piece is clamped with recess, because the heat insulation pad of SMC material has high strength, high temperature resistance, and the advantages such as good insulation performance, through the SMC heat insulation pad of pasting between adjacent two battery cells can effectively prevent heat runaway transmission and improve the safety performance of battery cell group, and simultaneously, the protruding piece on SMC heat insulation pad is clamped with the recess on the battery cell, improves the accuracy of SMC heat insulation pad installation position and the convenience of installation. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the whole structure schematic diagram of the utility model;

[0015] Figure 2 It is the connecting structure schematic diagram of battery cell body and heat insulation pad of the utility model;

[0016] Figure 3 It is the connecting structure schematic diagram of positioning column and end plate of the utility model;

[0017] Figure 4 It is Figure 3 It is the A structure enlarged schematic diagram of the utility model;

[0018] Figure 5 It is the connecting structure schematic diagram of battery cell body and positioning column of the utility model;

[0019] Figure 6 It is the connecting structure schematic diagram of heat insulation pad and protruding piece of the utility model.

[0020] In the figure: 1, the cell body; 2, SMC heat insulation pad; 3, end plate; 4, foam; 5, fixing structure; 501, positioning rod; 502, first steel belt; 503, second steel belt; 504, screw hole; 505, bolt; 6, protrusion; 7, groove; 8, positioning column; 9, positioning hole. DETAILED DESCRIPTION

[0021] The technical scheme of the utility model will be further illustrated below in combination with the drawings and through specific embodiments. In the drawings, only for example, the representation is only a schematic diagram, not a physical diagram, and cannot be understood as a limitation on the utility model; in order to better illustrate the embodiments of the utility model, some components in the drawings will be omitted, enlarged or reduced, and the size of the actual product is not represented; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings can be omitted.

[0022] In the drawings of the embodiments of the utility model, the same or similar signs correspond to the same or similar components; in the description of the utility model, it is understood that if the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, and the indicated device or element must have a specific orientation, a specific orientation and operation, therefore, the positional relationship described in the drawings is only for example, and cannot be understood as a limitation on the utility model, for those skilled in the art, the specific meaning of the above terms can be understood according to the specific situation.

[0023] Please refer to Figures 1-6 As shown in the figure, a kind of energy storage PACK cell heat insulation module based on SMC composite material, including multiple cell bodies 1, SMC heat insulation pad 2 is connected with glue between every two adjacent the cell body 1, four grooves 6 are set up in the two sides of the cell body 1, four protrusions 7 are fixedly connected in the two sides of the SMC heat insulation pad 2, the protrusion 7 is engaged with groove 6, end plate 3 is installed on the cell body 1 at both ends, the same fixing structure 5 is installed outside multiple cell bodies 1, multiple SMC heat insulation pads 2 and two end plates 3.

[0024] As a kind of technical optimization scheme of the utility model, the inside of the SMC heat insulation pad 2 is honeycomb structure, the SMC heat insulation pad 2 is mainly composed of unsaturated polyester resin, glass fiber, flame retardant, filler;The inside of SMC heat insulation pad 2 is designed honeycomb cavity structure, to enhance buffering performance and reduce weight;The SMC heat insulation pad 2 includes two contact plates and the sandwich layer arranged between the two contact plates, the sandwich layer is honeycomb structure, and the contact plate and the sandwich layer are SMC material.

[0025] As a technical optimization of this utility model, four positioning posts 8 are fixedly connected to the battery cell body 1 at both ends, and four positioning holes 9 are opened on both end plates 3. The positioning posts 8 are engaged with the positioning holes 9. When the end plates 3 are installed on the battery cell body 1 at both ends, the positioning posts 8 on the end plates 3 are aligned with the positioning holes 9 and the two are engaged to achieve the initial positioning of the end plates 3 and the battery cell body 1.

[0026] As a technical optimization of this utility model, foam 4 is installed on the side of the end plate 3 facing the battery cell body 1, and the foam 4 abuts against the battery cell body 1; since foam 4 is installed on the side of the end plate 3 facing the battery cell body 1, after the end plate 3 is installed in place, foam 4 will abut against the battery cell body 1, and foam 4 plays the role of buffering and further fixing the battery cell body 1, reducing the shaking of the battery cell body 1 during transportation or use.

[0027] As a technical optimization of this utility model, the fixing structure 5 includes positioning rods 501. Two positioning rods 501 are fixedly connected to each end plate 3. A first steel strip 502 is engaged with each of the two positioning rods 501 at one end, and a second steel strip 503 is engaged with each of the two positioning rods 501 at the other end. The second steel strip 503 is slidably connected to the first steel strip 502. The cross-section of the first steel strip 502 is U-shaped, and the overall cross-section of the second steel strip 503 is U-shaped, with the cross-sections at both ends of the second steel strip 503 being T-shaped. Multiple screw holes 504 are provided at both ends of the second steel strip 503. Bolts 505 are rotatably connected to both ends of the first steel strip 502, and the bolts 505 are threaded into the screw holes 504. The inner wall of the first steel strip 502 abuts against the side wall of the cell body 1, and the plurality of screw holes 504 are arranged in a linear array. After the first steel strip 502 and the second steel strip 503 are respectively engaged on the corresponding positioning rods 501, the second steel strip 503 is slid into the interior of the first steel strip 502, thereby quickly adjusting the relative position of the first steel strip 502 and the second steel strip 503, so that the inner wall of the middle part of the first steel strip 502 and the second steel strip 503 abuts against the side wall of the cell body 1, thereby initially tightening the overall structure composed of the cell body 1, the SMC heat insulation pad 2 and the end plate 3. Then, the bolt 505 is threadedly connected to the screw hole 504, and the first steel strip 502 and the second steel strip 503 are further tightened by tightening the bolt 505, thereby firmly fixing the overall structure of the energy storage PACK cell.

[0028] In use, the SMC heat insulation pad 2 is first connected to two adjacent battery cell bodies 1 by adhesive. Since four grooves 6 are provided on both sides of each battery cell body 1, and four protrusions 7 are fixedly connected to both sides of the SMC heat insulation pad 2, the protrusions 7 must be engaged into the grooves 6 before adhesive bonding. This initially positions the SMC heat insulation pad 2 between the battery cell bodies 1, ensuring accurate installation and facilitating subsequent adhesive bonding, thus making the connection between the SMC heat insulation pad 2 and the battery cell body 1 more stable. Next, the end plate 3 is installed on the battery cell bodies 1 located at both ends. During installation, the positioning pins 8 on the end plate 3 are aligned with the positioning holes 9 and engaged to achieve initial positioning of the end plate 3 and the battery cell body 1. Since foam 4 is installed on the side of the end plate 3 facing the battery cell body 1, after the end plate 3 is installed in place, the foam 4 will interact with the battery cell body 1. The core body 1 is in contact with the foam 4, which acts as a buffer and further fixes the core body 1, reducing the shaking of the core body 1 during transportation or use. Then, the first steel strip 502 and the second steel strip 503 are respectively engaged with the corresponding positioning rods 501. The second steel strip 503 is slid inward into the first steel strip 502, thereby quickly adjusting the relative position of the first steel strip 502 and the second steel strip 503, so that the inner wall of the middle part of the first steel strip 502 and the second steel strip 503 is in contact with the side wall of the core body 1, thereby initially tightening the overall structure composed of the core body 1, the SMC heat insulation pad 2 and the end plate 3. Then, the bolt 505 is threaded into the screw hole 504, and by tightening the bolt 505, the first steel strip 502 and the second steel strip 503 are further tightened, thereby firmly fixing the overall structure of the energy storage PACK core.

[0029] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A thermally spaced energy storage PACK module based on SMC composite material, comprising multiple cell bodies (1), characterized in that: An SMC heat insulation pad (2) is glued between each pair of adjacent battery cell bodies (1). Four grooves (6) are provided on both sides of each battery cell body (1). Four protrusions (7) are fixedly connected to both sides of each SMC heat insulation pad (2). The protrusions (7) engage with the grooves (6). End plates (3) are installed on each of the battery cell bodies (1) at both ends. The same fixing structure (5) is installed on the outside of multiple battery cell bodies (1), multiple SMC heat insulation pads (2) and two end plates (3).

2. The energy storage PACK cell thermal separation module based on SMC composite material according to claim 1, characterized in that: The SMC heat insulation pad (2) has a honeycomb structure inside.

3. The energy storage PACK cell thermal separation module based on SMC composite material according to claim 1, characterized in that: Four positioning posts (8) are fixedly connected to the battery cell body (1) at both ends, and four positioning holes (9) are opened on the two end plates (3). The positioning posts (8) engage with the positioning holes (9).

4. The energy storage PACK cell thermal separation module based on SMC composite material according to claim 3, characterized in that: The end plate (3) is fitted with foam (4) on the side facing the cell body (1), and the foam (4) abuts against the cell body (1).

5. The energy storage PACK cell thermal separation module based on SMC composite material according to claim 1, characterized in that: The fixed structure (5) includes positioning rods (501). Two positioning rods (501) are fixedly connected to the end plate (3). A first steel strip (502) is engaged on the two positioning rods (501) at one end, and a second steel strip (503) is engaged on the two positioning rods (501) at the other end. The second steel strip (503) is slidably connected to the first steel strip (502).

6. The energy storage PACK cell thermal separation module based on SMC composite material according to claim 5, characterized in that: The first steel strip (502) has a U-shaped cross-section, the second steel strip (503) has a U-shaped cross-section overall, and the cross-sections at both ends of the second steel strip (503) have a T-shaped cross-section.

7. A thermally spaced energy storage PACK cell module based on SMC composite material according to claim 6, characterized in that: The second steel strip (503) has multiple screw holes (504) at both ends, and the first steel strip (502) is rotatably connected to bolts (505) at both ends, with the bolts (505) threadedly connected to the screw holes (504).

8. The energy storage PACK cell thermal separation module based on SMC composite material according to claim 7, characterized in that: The inner wall of the first steel strip (502) abuts against the side wall of the battery cell body (1), and the plurality of screw holes (504) are distributed in a linear array.

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