High-strength stacked battery pack

Abstract

The utility model belongs to the technical field of batteries, and particularly relates to a high-strength stacked battery pack, which comprises a plurality of battery cells sequentially stacked along the length direction of the battery pack, at least two oppositely arranged fixing pieces are arranged between adjacent battery cells, the shore hardness of each fixing piece is not less than 60A, and the shore hardness of each fixing piece is not less than 10A. The oppositely-arranged fixing pieces and the adjacent battery cells are jointly limited to form a heat dissipation channel, and the fastening constraint pieces are arranged on the outer sides of the multiple battery cells in a sleeving mode. According to the utility model, the structural strength of the battery pack is effectively enhanced, and the battery pack has good heat dissipation performance.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of battery, concretely relates to a high -strength stacked battery pack. BACKGROUND

[0002] Battery refers to the electrolyte solution and metal electrode to produce electric current, and can convert chemical energy into electric energy device. Usually, the electric quantity of single battery is less, when assembling multiple batteries, the structural strength of existing battery pack is low, and the heat dissipation effect is poor, therefore, a novel technical scheme is urgently needed to solve the above problems. UTILITY MODEL CONTENTS

[0003] The utility model discloses to the deficiency of prior art, provide a high -strength stacked battery pack, it can make the whole battery pack has better structural strength and heat dissipation performance.

[0004] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] A high -strength stacked battery pack, including the multiple electric core that stacks in turn along the length direction of battery pack, at least two opposite setting fixed pieces between adjacent electric core, the shore hardness of each fixed piece is not less than 60A, and the opposite setting fixed piece and adjacent electric core are limited to form the heat dissipation channel together, and the fastening restraint piece is set on the outside of multiple electric core.

[0006] Further, multiple electric core constitutes the first module, and metal end plate is arranged on the opposite side of the first module respectively, the adapter seat is arranged on the metal end plate, and the fastening restraint piece is set on the metal end plate and the first module.

[0007] Further, one side of the metal end plate is fixed to the first module through the limiting piece, and the limiting piece can improve the assembly firmness of the metal end plate and the electric core.

[0008] Further, the adapter seat is installed in the limiting groove of the metal end plate, the limiting groove is surrounded by the limiting frame in the metal end plate, the limiting frame has the positioning piece embedded in the adapter seat, and the limiting frame and the positioning piece can improve the installation firmness of the adapter seat.

[0009] Further, the fastening restraint piece includes at least two separate restraint bands, and the restraint band is set on the outside of multiple electric core.

[0010] Further, the restraint band close to the bottom of the electric core is rotatably connected with the reinforcing band, and the reinforcing band is used for supporting the bottom of the electric core.

[0011] Further, the metal end plate has a Brinell hardness of at least 75 HB, and the metal end plate can be an aluminum alloy.

[0012] Further, the fixing member is provided with a fireproof layer, and the fixing member can be a high-temperature-resistant composite material.

[0013] Further, the width of the heat dissipation channel is equal to the thickness of the fixing member, and each of the battery cells is a hard-shell battery cell.

[0014] Further, the polar posts of the adjacent two battery cells with the same polarity are arranged in a staggered manner, so that the adjacent two battery cells can be connected in series.

[0015] The utility model discloses a beneficial effect lies in: the utility model discloses a plurality of battery cells that stack in turn along the length direction of battery pack, and the adjacent battery cell has at least two oppositely arranged fixing members, and the shore hardness of each fixing member is not less than 60A, and the oppositely arranged fixing member and the adjacent battery cell are located together to form a heat dissipation channel, and the fastening restraint member is set on the outside of the plurality of battery cells, and the plurality of battery cells is constrained through the fixing member and the fastening restraint member, and the constraint force is strong and the assembly process is efficient and controllable, and the mutual action of the rebound force that the fixing member with the shore hardness not less than 60A releases outward and the constraint force of the fastening restraint member to battery pack can make battery pack tightly fixed, thereby effectively enhance the structural strength of battery pack, and the heat dissipation channel between the adjacent battery cell can make the heat of battery cell effectively dissipate, and effectively improve the heat dissipation performance and service life of battery pack. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is a structural schematic view of the utility model embodiment 1.

[0017] Fig. 2 It is the exploded schematic view of the battery cell and the fixing member of the utility model.

[0018] Fig. 3 It is the schematic view of the heat dissipation channel of the utility model.

[0019] Fig. 4 It is the assembly structure diagram of the battery cell and the fixing member of the utility model.

[0020] Fig. 5 It is the exploded schematic view of the metal end plate and the adapter of the utility model.

[0021] Fig. 6 It is the structural schematic view of the limiting frame and the positioning member of the utility model.

[0022] Fig. 7 It is the exploded schematic view of the metal end plate and the limiting member of the utility model.

[0023] Fig. 8 Assemble structure diagram of the binding belt and the reinforcing belt of the utility model.

[0024] 1, electric core;2, fixed part;3, heat dissipation channel;4, fastening binding part;5, metal end plate;51, limiting groove;52, limiting frame;53, positioning part;6, adapter seat;7, limiting part;8, reinforcing belt;T, length direction of battery pack;W, width of heat dissipation channel. DETAILED DESCRIPTION

[0025] As some terms are used in the description and claims to refer to certain components, those skilled in the art will understand that manufacturers can use different names to refer to the same component. The description and claims of the present application do not distinguish components by name differences, but by functional differences. As mentioned throughout the description and claims, "including" is an open term, which should be interpreted as "including but not limited to". "Approximately" means within an acceptable error range, and those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.

[0026] In the description of the utility model, it should be understood that the terms "upper", "lower", "top", "side", "front", "back", "left", "right", "horizontal" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model.

[0027] In the utility model, unless otherwise specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection;It can be mechanical connection, or electrical connection;It can be directly connected, or indirectly connected through intermediate medium, or the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific situation.

[0028] The utility model will be further described in detail below in combination with the drawings Figs. 1-8 and specific embodiments, but not as a limitation on the utility model.

[0029] Example 1

[0030] A high-strength stacked battery pack, see Figs. 1-3, including a plurality of battery cells 1 stacked in sequence along the length direction T of the battery pack, at least two oppositely arranged fixing members 2 between adjacent battery cells 1, the Shore hardness of each fixing member 2 is not less than 60A, each fixing member 2 can be an EVA plate with certain adhesion, and the oppositely arranged fixing members 2 and the adjacent battery cells 1 jointly limit a heat dissipation channel 3, and a fastening and binding member 4 is sleeved on the outside of the plurality of battery cells 1.

[0031] Wherein, the fastening and binding member 4 can be a fastening steel band of stainless steel material, the steel band can constrain the battery pack in the length direction T of the battery pack, ensure the consistency of the length of the plurality of stacked battery packs, thereby facilitating the welding of the integrated busbar or the integrated piece of the wire harness plate, and facilitating the in-box assembly of the plurality of stacked battery packs. The constraint force of the steel band can be greater than 3800N, having the characteristics of high strength, thereby effectively constraining the external expansion force of the battery cell at the end of the service life.

[0032] Preferably, the fixing member 2 has elasticity, can absorb the thickness tolerance of the battery cell 1 (has a compatible effect on different thicknesses of battery cells 1 on the market), and the interaction of the external rebound force released by the fixing member 2 and the constraint force of the steel band on the battery pack can tightly fix the battery pack. The capacity of the battery cell 1 can be 280Ah, 304Ah or 314Ah, etc. And the battery pack can be stacked by 8-12, 12-16, 16-20 same battery cells 1.

[0033] Preferably, referring to Fig. 4 The width of the heat dissipation channel 3 is W, the width of the heat dissipation channel 3 is equal to the thickness of the fixing member 2, and each battery cell 1 is a hard-shell battery cell.

[0034] Preferably, the plurality of battery cells 1 constitute a first module, and metal end plates 5 are respectively arranged on opposite sides of the first module, wherein the metal end plates 5 are provided with adapter seats 6, and the fastening and binding member 4 is sleeved on the metal end plates 5 and the first module.

[0035] Preferably, referring to Fig. 5 And Fig. 6 The adapter seat 6 is installed in the limiting groove 51 of the metal end plate 5, and the limiting groove 51 is surrounded by the limiting frame 52 in the metal end plate 5. In some embodiments, the limiting frame 52 has a positioning member 53 embedded in the adapter seat 6, the adapter seat 6 can be provided with a groove matched with the positioning member 53, and at the same time, one side of the positioning member 53 is connected to the inside of the limiting frame 52 through a spring member, so that the assembly of the positioning member 53 and the adapter seat 6 is more flexible.

[0036] Wherein, the adapter seat 6 contains an aluminum bar fixed by two M6 nuts, in some embodiments, a floating design can be adopted, which can absorb the tolerance generated in the manufacturing process, and facilitate the screw alignment installation.

[0037] Preferably, one side of the metal end plate 5 is fixed to the first mold group through a limiting piece 7, the limiting piece 7 can be a PC sheet, which has insulation performance, can protect the battery cell, and the double-sided adhesive of the PC sheet can prevent the battery cell 1 and the metal end plate 5 from being displaced.

[0038] Preferably, the fastening binding piece 4 comprises at least two binding belts arranged in a spaced manner, and the binding belts are sleeved on the outer sides of the plurality of battery cells 1.

[0039] Preferably, the Brinell hardness of the metal end plate 5 is at least 75 HB, and specifically can be a 6063-T6 aluminum plate, so that the structural strength of the battery pack is higher.

[0040] Preferably, the surface of the fixing piece 2 is provided with a fireproof layer, and the fireproof layer can be a fireproof adhesive.

[0041] Preferably, the polar posts with the same polarity of the two adjacent battery cells 1 are arranged in a staggered manner.

[0042] Embodiment 2

[0043] Referring to Fig. 8 Different from embodiment 1, the binding belt close to the bottom of the battery cell 1 is rotationally connected with a reinforcing belt 8, the reinforcing belt 8 can be a steel belt, the reinforcing belt 8 is connected with the binding belt through a rivet, and the reinforcing belt 8 is used for supporting the bottom of the battery cell 1.

[0044] The other structures of the embodiment are the same as those of embodiment 1, and will not be described here.

[0045] Obviously, the utility model can make the whole battery pack have better structural strength and heat dissipation performance, and guarantee that the battery pack has better assembly quality.

[0046] According to the disclosure and teaching of the above description, the person skilled in the art of the utility model can also change and modify the above embodiments. Therefore, the utility model is not limited to the above specific embodiments, and any obvious improvement, replacement or modification made by the person skilled in the art on the basis of the utility model belongs to the protection scope of the utility model. In addition, although some specific terms are used in the specification, these terms are only for convenience of description and do not constitute any limitation on the utility model.

Claims

1. A high-strength stacked battery pack, characterized by: The invention comprises a plurality of battery cells (1) stacked in sequence along the length direction (T) of a battery pack, at least two fixing members (2) arranged opposite to each other are provided between adjacent battery cells (1), the Shore hardness of each fixing member (2) being not less than 60A, the fixing members (2) arranged opposite to each other and the adjacent battery cells (1) being jointly limited to form a heat dissipation channel (3), and a fastening member (4) being sleeved on the outside of the plurality of battery cells (1).

2. The high-strength stacked battery pack according to claim 1, wherein: The plurality of battery cells (1) form a first module, metal end plates (5) are respectively provided on opposite sides of the first module, the metal end plates (5) are provided with adapter seats (6), and the fastening and binding member (4) is sleeved on the metal end plates (5) and the first module.

3. The high-strength stacked battery pack according to claim 2, wherein: One side of the metal end plate (5) is fixed to the first module via a limiting member (7).

4. The high-strength stacked battery pack according to any one of claims 2 to 3, characterized in that: The adapter seat (6) is installed in the limiting groove (51) of the metal end plate (5), and the limiting groove (51) is surrounded by a limiting frame (52) in the metal end plate (5), and the limiting frame (52) has a positioning piece (53) embedded in the adapter seat (6).

5. The high-strength stacked battery pack according to any one of claims 1 to 3, characterized in that: The fastening and binding member (4) comprises at least two separately arranged binding belts, and the binding belts are sleeved on the outside of the plurality of battery cells (1).

6. The high-strength stacked battery pack according to claim 5, wherein: The restraining belt near the bottom of the battery core (1) is rotatably connected to a reinforcement belt (8), and the reinforcement belt (8) is used to support the bottom of the battery core (1).

7. The high-strength stacked battery pack according to any one of claims 2 to 3, characterized in that: The Brinell hardness of the metal end plate (5) is at least 75HB.

8. The high-strength stacked battery pack according to any one of claims 1 to 3, characterized in that: The surface of the fixing member (2) is provided with a fireproof layer.

9. The high-strength stacked battery pack according to any one of claims 1 to 3, characterized in that: The width of the heat dissipation channel (3) is equal to the thickness of the fixing member (2), and each of the battery cells (1) is a hard shell battery cell.

10. The high-strength stacked battery pack according to any one of claims 1 to 3, characterized in that: The poles of two adjacent battery cells (1) with the same polarity are staggered.

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