High-quality grouping rate electric vehicle battery pack

Abstract

The utility model relates to the technical field of electric automobile power batteries, and particularly discloses a high-quality grouping rate electric automobile battery pack which comprises a box cover, a bearing block, a battery module, an acquisition module and a box body, a battery module is arranged on the box body, a battery cell is arranged in the battery module, and an acquisition plate, a module end plate, a heating sheet and a module side plate are arranged outside the battery module; a plurality of bearing blocks are uniformly arranged on the collecting plate; the inner top wall of the box cover and the force bearing block are mounted on the box body in a contact manner; wherein a plurality of rectangular grooves are formed in the module end plate, so that the weight and the cost are reduced while the structural strength is ensured; the module side plates are made of aluminum alloy materials and provided with side plate holes used for heat dissipation and weight reduction. The battery pack has the advantages that the overall lightweight design is realized, the weight of the battery pack is reduced to the greatest extent, the weight reduction effect is realized, the mass grouping efficiency is improved, the energy density of the battery pack is further improved, the design cost can be further reduced, and the market competitiveness of products is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric vehicle power batteries, in particular to a high-quality grouping rate electric vehicle battery pack. Background Art

[0002] Existing electric vehicle battery packs focus on pursuing high safety and fast charging capabilities, but blindly pursuing these features will increase the design cost of the battery pack and increase its weight. At the same time, only some high-end models require special high safety features, and general models have not yet put forward such high requirements. However, in the current market, many mid- and low-end vehicle manufacturers have put forward strict requirements for lightweight design or high-quality grouping rate of battery packs. On the one hand, they meet the lightweight design concept of the whole vehicle, and the performance meets the new national standard for normal use. On the other hand, they can obtain the government's exemption from the purchase tax threshold and reduce the user's car purchase cost. Therefore, we need to propose a high-grouping rate electric vehicle battery pack to meet market needs. Utility Model Content

[0003] The purpose of the utility model is to provide an electric vehicle battery pack with a high quality grouping rate. A lot of weight reduction designs have been made in key components, which can not only reduce the design cost, but also enable the entire battery pack to be lightweight in design. The quality grouping rate can reach 90%, which exceeds the design level of other manufacturers in the industry, improves the competitiveness of the product in the industry, and truly achieves high quality and low price.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A high grouping rate electric vehicle battery pack comprises a box cover 1, a load-bearing block 2, a battery module 3, a collection module 4, and a box body 5; the box body 5 is provided with a battery module 3, the battery module 3 is provided with a cell inside, and a collection plate 31, a module end plate 32, a heating plate 33, and a module side plate 34 are provided outside; a plurality of load-bearing blocks 2 are evenly arranged on the collection plate 31; the inner top wall of the box cover 1 is installed on the box body 5 in contact with the load-bearing block 2.

[0006] Furthermore, the acquisition board 31 is located above the battery module 3; the module end plate 32 is arranged on one side of the battery module 3; the module side plates 34 are symmetrically arranged on both sides of the battery module 3 adjacent to the module end plates 32; the heating plate 33 is arranged in the gap between the side of the battery cell inside the battery module 3 and the module side plates 34;

[0007] Furthermore, the module end plate 32 is provided with four kinds of slots, including a first slot 301, a second slot 302, a third slot 303, and a fourth slot 304;

[0008] Furthermore, the first slots 301 are two elliptical slots, which are symmetrically arranged on the module end plate 32 at a position away from the center of the end plate; the third slots 303 are two rectangular slots, which are symmetrically arranged on the module end plate 32 at a position close to the center of the end plate;

[0009] Furthermore, the second slot 302 and the fourth slot 304 are symmetrically arranged on the side of the module end plate 32;

[0010] Preferably, the module side panel 34 is made of aluminum alloy with a thickness ranging from 1.8 to 2.0 mm; the module side panel 34 is provided with a plurality of elliptical side panel holes 305, the number of which is 10 to 15, preferably 10, 11, 12, 13, 14, or 15.

[0011] Furthermore, the acquisition module 4 is fixedly connected to the surface of the module end plate 32; the module cover of the acquisition module 4 is a plastic injection molding structure with a thickness range of 18-20 mm.

[0012] Furthermore, the heating plate 33 is an epoxy heating plate; the load-bearing blocks 2 are foam blocks, the number of which is 6-10, preferably 6, 7, 8, 9, or 10.

[0013] Preferably, the box body 5 is an integral extrusion molding structure made of aluminum alloy, the profile wall thickness ranges from 1.6 to 1.8 mm, and the cavity is in a cross shape;

[0014] Preferably, the box cover 1 has a thickness ranging from 1.0 to 1.2 mm; the box cover 1 has a surface provided with water cube-shaped grooves, the number of which ranges from 10 to 15, preferably 10, 11, 12, 13, 14, or 15.

[0015] Preferably, the module end plate 32 is made of magnesium alloy material, with a thickness ranging from 1.8 to 2.0 mm; the module end plate (32) is also provided with a plurality of rectangular grooves, with a number ranging from 70 to 80.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] On the basis of meeting customer needs, the weight of the battery pack is reduced to the greatest extent, the weight reduction effect is achieved, the mass grouping efficiency is improved, and the energy density of the battery pack is improved, and the design cost can be further reduced, thereby enhancing the market competitiveness of the product. In the utility model, a water cube-shaped groove is provided on the surface of the box cover, which has the effect of reducing weight and reducing costs; the box body is an integrated aluminum alloy structure, the profile wall thickness is small, and the cavity adopts a cross shape that can improve the structural strength; the module end plate is a die-cast magnesium alloy material, which is lighter than aluminum alloy, and a plurality of rectangular grooves are arranged on the module end plate, which reduces the weight and consumables cost while ensuring the structural strength; the module side plate is an aluminum alloy material, and is evenly provided with side plate holes for heat dissipation and weight reduction. Other advantages are explained in conjunction with the specific implementation method. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the explosion structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the battery module structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the module end plate structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the side panel structure of the module of the utility model.

[0022] In the figure: box cover 1, load-bearing block 2, battery module 3, collection plate 31, module end plate 32, heating plate 33, module side plate 34, collection module 4, box body 5, first slot 301, second slot 302, third slot 303, fourth slot 304, side plate hole 305, side plate slot 306. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly specified. The same reference numerals are used to indicate the same or similar components in different drawings; in addition, please understand that the terms such as "first", "second", "third", "upper", "lower", "front", "rear", "inner", "outer", "end", "portion", "segment", "width", "thickness", "area" and the like in the text are only for the convenience of the viewer to refer to the structure in the figure and are only used to help describe the utility model, and are not limitations of the utility model.

[0025] The utility model provides a high-grouping rate electric vehicle battery pack, comprising a box cover 1, a load-bearing block 2, a battery module 3, a collection module 4, and a box body 5; the box body 5 is provided with the battery module 3, a plurality of load-bearing blocks 2 are evenly arranged on the battery module 3, and the inner top wall of the box cover 1 is in contact with the load-bearing block 2 and is installed on the box body 5.

[0026] like Figure 1-2 As shown, the box cover 1 is installed on the box body 5, and the box cover 1 and the box body 5 are used to protect the entire inside of the PACK, including IP protection and structural protection;

[0027] The box cover 1 has a thickness of 1.2 mm and is provided with water cube-shaped grooves on the surface, which can reduce weight and cost. The number of grooves is 12. The box body 5 is an integrated aluminum alloy structure with a profile wall thickness of 1.6 mm. The cavity adopts a cross shape to improve the structural strength.

[0028] Eight load-bearing blocks 2 are evenly arranged above the battery module 3 and filled between the box cover 1 and the module 3. The load-bearing blocks are made of foam blocks. The foam blocks have low hardness and high resilience and can support force buffering. They are used to bear the force applied to the box cover 1 to prevent technicians from stepping on the upper surface of the box cover during operation and causing damage to the battery module 3.

[0029] The battery module 3 is provided with a collection plate 31, a module end plate 32, a heating plate 33, and a module side plate 34. The collection module 4 is fixed on the surface of the module end plate 32; the collection plate 31 is located above the battery module 3; the module end plate 32 is arranged on one side of the battery module 3; the module side plates 34 are symmetrically arranged on both sides of the battery module 3 adjacent to the module end plate 32; and the two heating plates 33 are respectively arranged in the gap between the side surfaces of the battery cells inside the battery module 3 and the module side plates 34.

[0030] Among them, battery module 3 has 54 internal cells;

[0031] Among them, the acquisition board 31 is used for collecting data such as battery cell temperature and voltage;

[0032] Among them, the heating plate 33 is an epoxy board sandwich resistance wire electric heating plate, which is used for battery preheating;

[0033] The module end plate 32 is made of die-cast magnesium alloy material, which is lighter than aluminum alloy and can ensure reliable structural strength; the thickness of the module end plate 32 is 2.0 mm; the module end plate 32 is provided with 75 rectangular grooves, the purpose of which is to reduce weight and increase strength.

[0034] like Figure 3 As shown, four kinds of slots are provided on the module end plate 32, namely the first slot 301, the second slot 302, the third slot 303, and the fourth slot 304. The first slot 301 is two elliptical slots, which are symmetrically arranged at a position away from the center of the module end plate 32 and are used for hoisting the entire battery module 3;

[0035] The third slots 303 are two rectangular slots, which are symmetrically arranged near the center of the module end plate 32, for the purpose of providing the end surface of the heating plate 33 with wires;

[0036] The second slot 302 and the fourth slot 304 are symmetrically arranged on the side of the module end plate 32, and are respectively used as outlets for the heating plates 33 on both sides;

[0037] like Figure 4 As shown, the lower corners of the module side plate 34 are provided with side plate grooves 306 for overlapping with the box cross beam;

[0038] There are also 10 elliptical side panel holes 305 evenly arranged on the module side panel 34. The purpose of the hole design here is twofold: one is to dissipate heat, so that the heat generated by the battery cells in the battery module 3 during the charging or discharging stage can be dissipated from the side panel holes 305 to prevent the battery cells from overheating and affecting performance; the other is to reduce weight and reduce costs.

[0039] The acquisition module 4 adopts a lightweight design and is used to collect and transmit the data collected by the acquisition board 31. The upper and lower covers are made of plastic with a thickness of 18 mm.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-quality grouping rate electric vehicle battery pack, characterized by: The invention comprises a box cover (1), a load-bearing block (2), a battery module (3), a collection module (4), and a box body (5); the box body (5) is provided with a battery module (3); the battery module (3) is provided with a battery core inside, and is provided with a collection plate (31), a module end plate (32), a heating plate (33), and a module side plate (34) outside; a plurality of load-bearing blocks (2) are evenly arranged on the collection plate (31); the inner top wall of the box cover (1) is mounted on the box body (5) in contact with the load-bearing blocks (2).

2. A high-quality grouping rate electric vehicle battery pack according to claim 1, characterized in that: The collection plate (31) is located above the battery module (3); the module end plate (32) is arranged on one side of the battery module (3); The module side plates (34) are symmetrically arranged on both sides of the battery module (3) adjacent to the module end plates (32); The heating plate (33) is arranged in the gap between the side surface of the battery cell inside the battery module (3) and the module side plate (34).

3. The high-quality grouping rate electric vehicle battery pack according to claim 1, characterized in that: The module end plate (32) is provided with four kinds of slots, including a first slot (301), a second slot (302), a third slot (303), and a fourth slot (304); The first slots (301) are two elliptical slots, which are symmetrically arranged at positions away from the center of the module end plate (32); the third slots (303) are two rectangular slots, which are symmetrically arranged at positions close to the center of the module end plate (32).

4. A high-quality grouping rate electric vehicle battery pack according to claim 3, characterized in that: The second slot hole (302) and the fourth slot hole (304) are symmetrically arranged on the side of the module end plate (32).

5. A high-quality grouping rate electric vehicle battery pack according to claim 1 or 2, characterized in that: The module side plate (34) is made of aluminum alloy material, with a thickness ranging from 1.8 to 2.0 mm; the module side plate (34) is provided with a plurality of elliptical side plate holes (305), the number of which is 10 to 15.

6. A high-quality grouping rate electric vehicle battery pack according to claim 1 or 2, characterized in that: The acquisition module (4) is fixedly connected to the surface of the module end plate (32); the module cover of the acquisition module (4) is a plastic injection molding structure with a thickness ranging from 18 to 20 mm.

7. A high-quality grouping rate electric vehicle battery pack according to claim 1 or 2, characterized in that: The heating plate (33) is an epoxy heating plate; the load-bearing blocks (2) are foam blocks, and the number of the blocks is 6-10.

8. The high-quality grouping rate electric vehicle battery pack according to claim 1, characterized in that: The box body (5) is an integrally extruded structure made of aluminum alloy, the profile wall thickness ranges from 1.6 to 1.8 mm, and the cavity is in a cross shape.

9. The high-quality grouping rate electric vehicle battery pack according to claim 1, characterized in that: The box cover (1) has a thickness ranging from 1.0 to 1.2 mm; and the surface of the box cover (1) is provided with water cube-shaped grooves, the number of which is 10 to 15.

10. The high-quality grouping rate electric vehicle battery pack according to claim 1, characterized in that: The module end plate (32) is made of magnesium alloy material, with a thickness ranging from 1.8 to 2.0 mm; the module end plate (32) is also provided with a plurality of rectangular grooves, with a number ranging from 70 to 80.

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