Battery pack mechanism and vehicle

Abstract

The utility model relates to the technical field of new energy vehicles, and discloses a battery pack mechanism and a vehicle. A plurality of battery cell units are arranged, a connecting assembly is arranged between every two adjacent battery cell units, and every two adjacent battery cell units are in electric signal connection through the connecting assemblies; the plurality of battery cell units and the connecting assembly are integrated into the battery cell set, the two ends of the battery cell set are electrically connected with the electrode plates respectively, the battery cell units are directly stacked and are divided by the connecting assembly, so that the space utilization rate is higher, meanwhile, the positive electrode and the negative electrode of each battery do not need to be independently connected, connecting pieces are saved, and the cost is reduced. The technical problems that in the prior art, the energy density of a battery is low, and the requirement for a connecting piece is large are solved, and the technical effects that cost is reduced, and meanwhile the energy density of the battery is high are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs for new energy vehicles, and in particular to a battery pack mechanism and a vehicle. Background Art

[0002] With increasing public concern about air quality and the global oil crisis, new energy vehicles (NEVs) that can achieve energy conservation and emission reduction, such as pure electric vehicles, plug-in hybrid vehicles, and hybrid electric vehicles, are experiencing rapid development. Power batteries are a key component in hybrid vehicles, and their performance directly impacts the overall vehicle performance. Power batteries are widely used in new energy vehicles due to their high power density, excellent low-temperature performance, superior high-current discharge performance, long cycle life, environmental friendliness, and safety.

[0003] Existing power batteries are generally combined in a specific way, using conductive connectors to connect multiple batteries end to end to form a battery pack. However, this method requires a large number of connectors between the batteries, resulting in increased costs, and the gaps between the batteries lead to lower battery energy density. Utility Model Content

[0004] The purpose of the utility model is to provide a battery pack mechanism and a vehicle, which solve the technical problems of low battery energy density and large demand for connectors in the prior art.

[0005] In order to solve the above technical problems, the present invention provides a battery pack structure, including a battery cell unit and a connecting assembly;

[0006] There are multiple battery cell units, and a connecting component is provided between each of two adjacent battery cell units, and the two adjacent battery cell units are connected by electrical signals through the connecting component;

[0007] A plurality of the battery cell units and the connecting assembly are integrated into a battery cell assembly, and both ends of the battery cell assembly are electrically connected to an electrode sheet respectively.

[0008] In an optional embodiment, the battery cell unit includes an active material layer and an electrolyte layer, and the active material layer and the electrolyte layer are arranged in close contact.

[0009] In an optional embodiment, two ends of the connection component are respectively connected to one of the electrolyte layers and one of the active material layers.

[0010] In an optional embodiment, the four sides of the connecting assembly are arranged flush with the four sides of the battery cell unit.

[0011] In an optional embodiment, the length of the electrode sheet is greater than the length of the connecting assembly.

[0012] In an optional embodiment, one end of the electrode sheet is arranged flush with the connecting assembly.

[0013] In an optional embodiment, it further includes a box;

[0014] The box body is provided with a receiving cavity, and the plurality of battery core units and the connecting assembly are all installed in the receiving cavity.

[0015] In an optional embodiment, a positive electrode post and a negative electrode post are provided on the box body, the positive electrode post and the negative electrode post are arranged far away from each other, and the positive electrode post and the negative electrode post respectively extend into the accommodating cavity and are connected to one of the electrode sheets.

[0016] In an optional embodiment, the box body is provided with two through holes that are away from each other, and the two electrode sheets extend out from the accommodating cavity respectively through one of the through holes.

[0017] The utility model also provides a vehicle, comprising the battery pack mechanism.

[0018] The utility model provides a battery pack structure including a battery cell unit and a connecting assembly; a plurality of battery cell units are provided, a connecting assembly is provided between each two adjacent battery cell units, and the two adjacent battery cell units are connected by electrical signals of the connecting assembly; the plurality of battery cell units and the connecting assembly are integrated into a battery cell collection, and both ends of the battery cell collection are electrically connected to an electrode sheet respectively. By directly stacking the battery cell units and dividing them by using the connecting assembly, the space utilization rate is higher, and at the same time, there is no need to connect the positive and negative poles of each battery separately, which saves connectors, solves the technical problems of low battery energy density and large demand for connectors in the prior art, and achieves the technical effect of reducing costs and increasing battery energy density. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of the battery cell assembly mentioned in an embodiment of the present utility model;

[0020] Figure 2 This is another structural diagram of the battery cell assembly mentioned in the embodiment of the present utility model;

[0021] Figure 3 This is a schematic structural diagram of the battery pack mechanism mentioned in an embodiment of the present utility model.

[0022] In the figure, 1-battery cell unit; 101-active material layer; 102-electrolyte layer; 2-connection component; 3-electrode sheet; 4-housing; 5-positive electrode column; 6-negative electrode column. DETAILED DESCRIPTION

[0023] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0024] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, removable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0025] Mr. He, regarding related technologies, existing power batteries are generally combined in a specific manner, using conductive connectors to connect multiple batteries end to end to form a battery pack. However, this method requires a large number of connectors between the batteries, resulting in increased costs, and the gaps between the batteries lead to lower battery energy density.

[0026] In view of this, if Figure 1-Figure 3 As shown, some embodiments of the present invention provide a battery pack structure, including a battery cell unit 1 and a connecting component 2; a plurality of battery cell units 1 are provided, a connecting component 2 is provided between each adjacent battery cell unit 1, and the two adjacent battery cell units 1 are connected by electrical signals through the connecting component 2; a plurality of battery cell units 1 and the connecting component 2 are integrated into a battery cell collection, and an electrode sheet 3 is electrically connected to each end of the battery cell collection.

[0027] In the above embodiment, the battery cell unit 1 can be in the shape of a rectangular parallelepiped, and the largest area of the multiple battery cell units 1 is attached to the connecting component 2, wherein the connecting component 2 can be made of a conductive metal material, such as aluminum foil, or a lead plate, and the multiple battery cell units 1 are stacked along the thickness direction, and a connecting component 2 is provided between each two adjacent battery cell units 1, so that the multiple battery cell units 1 can be connected by electrical signals through the connecting component 2, and the multiple battery cell units 1 and the multiple connecting components 2 constitute a battery cell set, wherein the voltage of the battery cell set can be set according to demand, and the voltage of the battery cell set is determined by setting the number of battery cell units 1, such as a single battery cell unit. The voltage of element 1 is 3V, and the design requirement is 60V, so 20 battery cell units 1 need to be set up. Furthermore, an electrode sheet 3 is provided at both ends of the battery cell assembly. The material of the electrode sheet 3 can be consistent with the material of the connecting component 2. The electrode sheet 3 is attached to the surface of the battery cell assembly, that is, the two electrode sheets 3 are respectively attached to the surface of the battery cell assembly at both ends, and the current of the battery cell assembly is imported and exported through the two electrode sheets 3, so there is no need to set a conductive connecting sheet to connect multiple batteries, and there is no need to package each battery cell unit 1 separately, which saves costs and space, and makes the battery pack energy density higher.

[0028] Some embodiments of the present invention provide a battery pack structure, including a battery cell unit 1 and a connecting component 2; a plurality of battery cell units 1 are provided, and a connecting component 2 is provided between each two adjacent battery cell units 1, and the two adjacent battery cell units 1 are electrically connected through the connecting component 2; the plurality of battery cell units 1 and the connecting component 2 are integrated into a battery cell collection, and an electrode sheet 3 is electrically connected to each end of the battery cell collection. By directly stacking the battery cell units 1 and dividing them using the connecting component 2, the space utilization rate is higher, and at the same time, there is no need to connect the positive and negative poles of each battery separately, which saves connectors, solves the technical problems of low battery energy density and large demand for connectors in the prior art, and achieves the technical effect of reducing costs and increasing battery energy density.

[0029] In an optional embodiment, the battery cell unit 1 includes an active material layer 101 and an electrolyte layer 102 , and the active material layer 101 and the electrolyte layer 102 are arranged in close contact with each other.

[0030] In the above embodiment, the active material layer 101 and the electrolyte layer 102 can both be in the shape of a rectangular parallelepiped, the active material layer 101 can be made of sodium ion oxide, and the electrolyte layer 102 can be made of conductive metal oxide. The maximum areas of the active material layer 101 and the electrolyte layer 102 are bonded together to ensure that the contact area between the active material layer 101 and the electrolyte layer 102 is maximized. At the same time, the four sides of the active material layer 101 and the electrolyte layer 102 are arranged flush to avoid wasting space.

[0031] In an optional embodiment, both ends of the connection component 2 are connected to an electrolyte layer 102 and an active material layer 101 respectively.

[0032] In the above embodiment, the connecting component 2 can be in the shape of a rectangular parallelepiped, and the connecting component 2 can be arranged between adjacent battery cells 1, and the two surfaces with the largest area of the connecting component 2 respectively contact the wire units on both sides, wherein the battery cells 1 are arranged in such a manner that the two sides of the connecting component 2 contact different substances, that is, the two sides of the battery cell 1 are respectively connected to the electrolyte layer 102 and the active material layer 101, thereby realizing the series connection of the battery cells 1, and the required voltage can be set according to needs.

[0033] In an optional embodiment, the periphery of the connecting assembly 2 is flush with the periphery of the battery cell unit 1 .

[0034] In the above embodiment, each battery cell unit 1 can be set to the same size, and multiple battery cell units 1 are stacked together with connection components 2 between them. The size of the connection component 2 can be set to be consistent with the size of the battery cell unit 1, so that when the battery cell unit 1 and the connection component 2 overlap, the four sides of the battery cell unit 1 and the connection component 2 can be made more flush, avoiding waste of space, making the energy density of the battery pack higher, and making the space utilization more reasonable.

[0035] In an optional embodiment, the length of the electrode sheet 3 is greater than the length of the connecting component 2 .

[0036] In the above embodiment, one side of the electrode sheet 3 can extend from the battery cell assembly, and the length of the extended electrode sheet 3 can be the entire width of the electrode sheet 3 or a portion thereof, and each electrode sheet 3 extends a portion from the battery cell assembly to facilitate the connection between the electrode sheet 3 and the electrical appliance.

[0037] In an optional embodiment, one end of the electrode sheet 3 is arranged flush with the connecting assembly 2 .

[0038] In the above embodiment, after the electrode sheet 3 overlaps with the battery cell assembly, the three edges of each electrode sheet 3 are flush with the battery cell assembly, and the other edge protrudes from the battery cell assembly, so that the surface of the electrode sheet 3 and the battery cell assembly are smoother, reducing the space occupied by the electrode sheet 3, thereby improving the energy density of the battery pack.

[0039] In an optional embodiment, a box body 4 is further included; a receiving cavity is provided in the box body 4, and a plurality of battery cell units 1 and connection components 2 are installed in the receiving cavity.

[0040] In the above embodiment, the box body 4 can be made of an insulating and corrosion-resistant material, such as plastic. The box body 4 can be rectangular, and a accommodating cavity is provided inside the box body 4. The accommodating cavity can be rectangular, or can be adaptively selected according to design requirements. The length of the battery cell assembly is arranged to coincide with the length of the accommodating cavity. The battery cell assembly can be fixed in the accommodating cavity by bolts or clips, and the box body 4 can be installed on the vehicle chassis.

[0041] In an optional embodiment, a positive electrode post 5 and a negative electrode post 6 are provided on the box body 4 , and the positive electrode post 5 and the negative electrode post 6 are arranged far away from each other. The positive electrode post 5 and the negative electrode post 6 respectively extend into the accommodating cavity and are connected to an electrode sheet 3 .

[0042] In the above embodiment, the positive electrode post 5 and the negative electrode post 6 can both be lead columns, and the positive electrode post 5 and the negative electrode post 6 can both be cylindrical or rectangular. The positive electrode post 5 and the negative electrode post 6 are both arranged perpendicular to the surface of the box body 4. The positive electrode post 5 and the negative electrode post 6 can both penetrate into the box body 4 and be respectively connected to an electrode sheet 3 at both ends of the battery cell assembly, so that the battery cell assembly in the accommodating cavity can be connected to the outside world through the positive electrode post 5 and the negative electrode post 6.

[0043] In an optional embodiment, the box body 4 is provided with two through holes that are away from each other, and the two electrode sheets 3 extend out from the accommodating cavity respectively through one through hole.

[0044] In the above embodiment, the two through holes provided on the box body 4 can be arranged parallel to each other, and the length of each through hole is long and strip-shaped, so that the end face of each electrode sheet 3 can extend out of the accommodating cavity through a through hole, so that the two electrode sheets 3 serve as the positive and negative poles of the battery pack respectively.

[0045] The utility model also provides a vehicle, comprising a battery pack mechanism.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A battery pack structure, characterized in that: It comprises a battery cell unit (1) and a connection component (2); A plurality of the battery cell units (1) are provided, and a connecting component (2) is provided between each of two adjacent battery cell units (1), and the two adjacent battery cell units (1) are connected by electrical signals via the connecting component (2); A plurality of the battery cell units (1) and the connection assembly (2) are integrated into a battery cell assembly, and both ends of the battery cell assembly are electrically connected to an electrode sheet (3).

2. The battery pack structure according to claim 1, characterized in that: The battery cell unit (1) comprises an active material layer (101) and an electrolyte layer (102), and the active material layer (101) and the electrolyte layer (102) are arranged in close contact.

3. The battery pack structure according to claim 2, characterized in that: Both ends of the connection component (2) are connected to one of the electrolyte layers (102) and one of the active material layers (101), respectively.

4. The battery pack structure according to claim 1, characterized in that: The four sides of the connecting assembly (2) are arranged flush with the four sides of the battery cell unit (1).

5. The battery pack structure according to claim 1, characterized in that: The length of the electrode sheet (3) is greater than the length of the connecting component (2).

6. The battery pack structure according to claim 5, characterized in that: One end of the electrode sheet (3) is arranged flush with the connecting assembly (2).

7. The battery pack structure according to claim 1, characterized in that: Also includes a box (4); A accommodating cavity is provided in the box body (4), and the plurality of battery core units (1) and the connecting assembly (2) are all installed in the accommodating cavity.

8. The battery pack structure according to claim 7, characterized in that: A positive pole (5) and a negative pole (6) are provided on the box body (4), the positive pole (5) and the negative pole (6) are arranged away from each other, and the positive pole (5) and the negative pole (6) respectively extend into the accommodating cavity and are connected to one of the electrode sheets (3).

9. The battery pack structure according to claim 7, characterized in that: The box body (4) is provided with two through holes that are away from each other, and the two electrode sheets (3) extend out of the accommodating cavity through one of the through holes respectively.

10. A vehicle, characterized in that: Comprising a battery pack structure as described in any one of claims 1-9.

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