CN220341416U

CN220341416U - Assembled lithium battery pack

Info

Publication number: CN220341416U
Application number: CN202321558306.XU
Authority: CN
Inventors: 彭峥
Original assignee: Dongguan Zhechang Industrial Co ltd
Current assignee: Dongguan Zhechang Industrial Co ltd
Priority date: 2023-06-19
Filing date: 2023-06-19
Publication date: 2024-01-12
Anticipated expiration: 2033-06-19

Abstract

The utility model discloses an assembled lithium battery pack, which belongs to the technical field of lithium battery packs and comprises the following components: the lithium battery comprises a lithium battery body, wherein a positive terminal is fixedly arranged on one side of the upper end face of the lithium battery body, a negative terminal is fixedly arranged on the other side of the upper end face of the lithium battery body, annular frames are fixedly sleeved on the outer sides of the upper end and the lower end of the lithium battery body, fixing columns are fixedly connected between the annular frames, and assembling plates are fixedly arranged on the upper end and the lower end of the outer side face of each fixing column. From this, can realize through setting up two fixed knot constructs about every battery unit tetrahedron, improve the degree of freedom of fixed connection between every unit greatly for the size of assembled group battery can be according to actual conditions free adjustment, in addition, all fixed being provided with in every battery unit outside protective structure, can improve its anticollision ability greatly under the prerequisite that does not influence the battery heat dissipation, improves the security of using.

Description

Assembled lithium battery pack

Technical Field

The utility model relates to a lithium battery pack, in particular to an assembled lithium battery pack, and belongs to the technical field of lithium battery packs.

Background

The lithium battery consists of a cathode and an anode, separated and connected by an electrolyte. In the charged state, the anode contains a high concentration of intercalated lithium, while the cathode contains lithium. During discharge, lithium ions leave the anode and migrate through the electrolyte to the cathode, while their associated electrons are collected by a current collector for powering the electrical device. In the lithium battery pack, a plurality of lithium batteries are connected in series to obtain the required working voltage, and the two methods of series connection and parallel connection are combined to achieve the high-voltage and high-capacity standard.

The utility model discloses a lithium battery pack, which is characterized in that the structure of the lithium battery pack comprises an upper cover, a lower cover and a battery pack body, wherein the upper cover and the lower cover are detachably and fixedly connected, the battery pack body is arranged in the lower cover, the battery pack body comprises a plurality of isolating pieces, fasteners and PCBA, the tops of all the isolating pieces are connected with the PCBA, a battery cell is stably fixed in the battery pack body through the isolating pieces and the fasteners, and the upper cover and the lower cover are combined, so that the omnibearing fixation is realized, the integral structure of the battery pack body and the stability of the relative position of the battery cell are ensured, the safety of the electric property of a circuit board is ensured, the abnormal occurrence of the safety of the battery cell is effectively avoided, the limitation of the geometry of the cover body cannot be freely selected, the assembled geometry of the lithium battery pack cannot be regulated according to the practical installation space, and meanwhile, the battery pack is lack of a reliable anti-collision structure, so that the battery pack is possibly damaged due to collision.

Disclosure of Invention

The utility model aims to solve the technical problem of providing an assembled lithium battery pack, which can greatly improve the freedom degree of fixed connection between each unit through an upper fixing structure and a lower fixing structure arranged on four sides of each battery unit, so that the size of the assembled battery pack can be freely adjusted according to actual conditions, meanwhile, the exposed binding post structure can facilitate the interconnection between the battery units, and in addition, the outer side of each battery unit is fixedly provided with a protective structure, so that the anti-collision capability of the assembled lithium battery pack can be greatly improved on the premise of not influencing the heat dissipation of the battery, the use safety of the assembled lithium battery pack is improved, and the technical problems of the prior art that the assembled battery units are not free and lack of anti-collision measures are solved.

In order to solve the problems, the following technical scheme is provided:

the utility model provides an equipment lithium battery group, includes the lithium cell body, lithium cell body up end one side is fixed to be provided with the anodal terminal, and lithium cell body up end opposite side is fixed to be provided with the negative pole terminal, the equal fixed cover in the upper and lower end outside of lithium cell body is equipped with annular frame, fixedly connected with fixed column between the annular frame, fixed column lateral surface upper and lower end is fixed and is provided with the equipment board, the first hole has been seted up along length direction to the equipment board, the just outside of equipment board is provided with the connecting strip, the second hole has been seted up along length direction to the connecting strip, be connected fixedly together through fixing bolt between equipment board and the connecting strip;

the annular frame lateral surface fixedly connected with spliced pole, fixed column lateral surface fixedly connected with spliced pole, spliced pole external fixation has the protecting crust.

Further, the guard casing is divided into upper, middle and lower three parts, and the start line or the end line of each part in the vertical direction is the upper boundary line or the lower boundary line of the assembly plate, that is, the interval between each part of the guard casing is equal to the width of the assembly plate.

Further, the protective shell is a plastic grid shell structure with certain hardness and has certain collision resistance.

Further, the positive binding post and the negative binding post are formed by wrapping insulating layers on the conductive post and the conductive bolt.

Further, the fixing nut is fixedly buried in the first hole formed in the assembly plate, and the thread size of the nut is matched with that of the fixing bolt.

Furthermore, the connecting strip is provided with a second hole which is a round hole with a smooth inner wall, and the size of the hole is slightly larger than the section size of the fixing bolt.

Furthermore, the end part of the connecting column is fixedly provided with a clamping groove structure, and the part of the protecting shell, which is contacted with the connecting column, is correspondingly provided with a convex clamping bolt structure.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, through the upper and lower two groups of assembly plate structures arranged on four sides of each battery unit, when the battery units are tightly attached, the assembly plates of the two adjacent units can be respectively connected through the connecting strips to realize the fixed connection, so that the degree of freedom of the fixed connection between each unit can be greatly improved, the size of the assembled battery pack can be freely adjusted according to actual conditions, and meanwhile, the exposed binding post structure can facilitate the mutual connection between the battery units;

2. in the utility model, the anti-collision capability of the battery unit can be greatly improved through the protective structure arranged at the outer side of each battery unit, meanwhile, the plastic material can prevent the brittle failure of the protective shell structure, and the use safety is improved, in addition, the protective shell structure is a grid shell structure, so that the battery unit has better heat dissipation performance and cannot influence the heat dissipation of the battery unit because the protective shell structure is wrapped at the outer side of the battery unit

Specific embodiments of the utility model are disclosed in detail below with reference to the following description and drawings, indicating the manner in which the principles of the utility model may be employed. It should be understood that the embodiments of the utility model are not limited in scope thereby. The embodiments of the utility model include many variations, modifications and equivalents within the spirit and scope of the appended claims.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

fig. 1 is a schematic view showing the construction of a preferred embodiment of an assembled lithium battery pack according to the present utility model;

fig. 2 is a schematic view of an internal support structure of a preferred embodiment of an assembled lithium battery pack according to the present utility model;

fig. 3 is a structural cross-sectional view of a preferred embodiment of an assembled lithium battery pack according to the present utility model;

FIG. 4 is an enlarged view at A in FIG. 3;

fig. 5 is a schematic view illustrating connection between structural units of a preferred embodiment of an assembled lithium battery pack according to the present utility model.

In the figure: 1. a lithium battery body; 2. a positive terminal; 3. a negative electrode binding post; 4. an annular frame; 5. fixing the column; 6. assembling plates; 7. a first hole; 8. a connecting strip; 9. a second hole; 10. a fixing bolt; 11. a connecting column; 12. and (5) protecting the shell.

Detailed Description

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

As shown in fig. 1-5, the assembled lithium battery pack provided in this embodiment includes a lithium battery body 1, the lithium battery body 1 is used for storing and releasing electric energy to supply power to electric equipment, one side of the upper end face of the lithium battery body 1 is fixedly provided with a positive terminal 2, the combined operation of the positive terminal 2 and a negative terminal 3 can realize the serial-parallel connection between battery units and simultaneously use for transferring electric energy, the other side of the upper end face of the lithium battery body 1 is fixedly provided with a negative terminal 3, the combined operation of the negative terminal 3 and the negative terminal 3 can realize the serial-parallel connection between battery units and simultaneously use for transferring electric energy, the outer sides of the upper end and the lower end of the lithium battery body 1 are fixedly sleeved with annular frames 4, the annular frames 4 are fixedly sleeved on the outer sides of the lithium battery body 1 to provide conditions for the installation of other components, the annular frames 4 are fixedly connected with fixing columns 5, the fixing columns 5 are fixedly sleeved on the outer side of the lithium battery body 1 to provide conditions for mounting other components, the upper end and the lower end of the outer side face of each fixing column 5 are fixedly provided with assembling plates 6, the assembling plates 6 and the connecting strips 8 are combined to work so as to realize the fixed assembly between adjacent battery units, the assembling plates 6 are penetrated and provided with first holes 7 along the length direction, the first holes 7, second holes 9 and fixing bolts 10 are combined to realize the fixed connection between the assembling plates 6 and the connecting strips 8, the connecting strips 8 are penetrated and provided with second holes 9 along the length direction, and the assembling plates 6 and the connecting strips 8 are connected and fixed together through fixing bolts 10;

the annular frame 4 lateral surface fixedly connected with spliced pole 11, fixed column 5 lateral surface fixedly connected with spliced pole 11, spliced pole 11 are used for fixed mounting protecting crust 12, and spliced pole 11 external fixation has protecting crust 12, and protecting crust 12 can play the guard action to lithium cell body 1 to prevent that its collision is impaired.

In this embodiment, as shown in fig. 1-5,

preferably, the protective case 12 is divided into three parts of upper, middle and lower and the start line or the end line of each part in the vertical direction is the upper boundary line or the lower boundary line of the assembly plate 6, i.e., the interval between each part of the protective case 12 is equal to the width of the assembly plate 6.

Preferably, the protecting shell 12 is a plastic grid shell structure with certain hardness and has certain collision resistance, and the structural form can improve the collision resistance of the whole structure on the premise of not affecting the heat dissipation of the lithium battery body 1.

Preferably, the composition structure of the positive terminal 2 and the negative terminal 3 is composed of a conductive column body and a conductive bolt structure, and an insulating layer is covered outside the conductive column body and the conductive bolt structure.

Preferably, the first hole 7 formed on the assembly plate 6 is internally fixed with a fixing nut, and the thread size of the nut is matched with that of the fixing bolt 10, so that the fixing bolt 10 can firmly connect the assembly plate 6 with the connecting strip 8.

Preferably, the connecting strip 8 is provided with a circular hole with a smooth inner wall, and the size of the hole is slightly larger than the cross-sectional size of the fixing bolt 10, so that the second hole 9 can not hinder the rotation of the fixing bolt 10.

Preferably, the fixed draw-in groove structure that is provided with of spliced pole 11 tip, the part that protection shell 12 and spliced pole 11 contacted corresponds to be provided with the bayonet structure of evagination, and this kind of detachable structure can allow protection shell 12 to carry out convenient dismantlement when damaging and change.

The application principle and the application flow of the utility model are as follows: placing two lithium battery bodies 1 adjacently and aligning the edges of the protective shells 12 of the two lithium battery bodies with each other, placing a connecting strip 8 across the assembly plates 6 of the two units and fixing the two ends on the assembly plates 6 of the two units respectively through fixing bolts 10, repeating the above operation if other lithium battery bodies 1 are required to be connected, and reinforcing the connection between each other by using the rest of the free assembly plates 6 if the other lithium battery bodies 1 are not required to be connected; the negative electrode binding post 3 and the negative electrode binding post 3 work in a combined way, so that the series-parallel connection between the battery units can be realized and the battery units can be simultaneously used for transmitting electric energy; the protecting shell 12 can protect the lithium battery body 1 from collision damage on the premise of not affecting heat dissipation of the lithium battery body.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present utility model. 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.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to specific circumstances.

While the utility model has been described in connection with specific embodiments, it will be apparent to those skilled in the art that the description is intended to be illustrative and not limiting in scope. Various modifications and alterations of this utility model will occur to those skilled in the art in light of the spirit and principles of this utility model, and such modifications and alterations are also within the scope of this utility model.

Claims

1. The lithium battery pack is characterized by comprising a lithium battery body (1), wherein a positive electrode binding post (2) is fixedly arranged on one side of the upper end face of the lithium battery body (1), a negative electrode binding post (3) is fixedly arranged on the other side of the upper end face of the lithium battery body (1), annular frames (4) are fixedly sleeved on the outer sides of the upper end and the lower end of the lithium battery body (1), fixing columns (5) are fixedly connected between the annular frames (4), assembling plates (6) are fixedly arranged on the upper end and the lower end of the outer side face of each fixing column (5), first holes (7) are formed in the assembling plates (6) in a penetrating mode in the length direction, connecting strips (8) are arranged on the right outer side of the assembling plates (6), second holes (9) are formed in the connecting strips (8) in a penetrating mode in the length direction, and the assembling plates (6) and the connecting strips (8) are fixedly connected together through fixing bolts (10);

the annular frame (4) lateral surface fixedly connected with spliced pole (11), fixed column (5) lateral surface fixedly connected with spliced pole (11), spliced pole (11) external fixation has protective housing (12).

2. An assembled lithium battery pack according to claim 1, characterized in that the protective case (12) is divided into three parts up, down and the starting line or the ending line of each part in the vertical direction is the upper boundary line or the lower boundary line of the assembly plate (6), i.e. the distance between each part of the protective case (12) is equal to the width of the assembly plate (6).

3. An assembled lithium battery according to claim 1, characterized in that the protective casing (12) is a plastic mesh casing structure with a certain hardness and which has a certain collision resistance.

4. The assembled lithium battery pack according to claim 1, wherein the positive electrode binding post (2) and the negative electrode binding post (3) are composed of conductive columns and conductive bolt structures covered with insulating layers.

5. An assembled lithium battery pack according to claim 1, characterized in that the first hole (7) formed in the assembly plate (6) is internally fixed with a fixing nut embedded therein and the thread size of the nut is matched with the thread size of the fixing bolt (10).

6. An assembled lithium battery according to claim 1, characterized in that the connecting strip (8) is provided with a second hole (9) which is a circular hole with a smooth inner wall and the hole size of which is slightly larger than the cross-sectional size of the fixing bolt (10).

7. The assembled lithium battery pack according to claim 1, wherein the end portion of the connecting column (11) is fixedly provided with a clamping groove structure, and the portion of the protecting shell (12) contacted with the connecting column (11) is correspondingly provided with a convex clamping bolt structure.