Lithium ion power battery pack

Abstract

The utility model belongs to the technical field of lithium ion batteries, and particularly relates to a lithium ion power battery pack, which comprises single batteries, a fixing frame and electrode fixing sheets. Each single battery comprises a battery cell and an electrode plate; the fixing frame comprises a fixing frame body and a fixing piece. Fixing holes are formed in the middle of the fixing frame body. The electrode plates comprise a positive electrode plate and a negative electrode plate. According to the lithium ion power battery pack provided by the invention, the plurality of fixing frames are arranged, the plurality of fixing frames are fixedly connected with the single batteries, one single battery is connected with two fixing frames, the adjacent fixing frames are fixedly connected with each other, the plurality of fixing frames are fixedly connected to the battery pack, and the battery pack is fixed; according to the lithium ion power battery pack provided by the invention, the single batteries are connected more stably and are not easy to fall off, the reliability is improved, and the normal use of the lithium ion power battery pack can be ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of lithium-ion batteries, and in particular relates to a lithium-ion power battery pack. Background Art

[0002] Lithium-ion batteries are a green and recyclable energy source that is currently being widely promoted. For the above-mentioned power tools, electric toys, model aircraft, and electric vehicles, these devices have requirements for instantaneous or continuous high current operation, and some even require 30C or 35C discharge. With the development of technology, even higher discharge rates will be required in the future, and this power demand is difficult for current single lithium-ion cells to meet.

[0003] High-rate lithium-ion battery packs, which are composed of multiple single cells connected in series or parallel, are gradually replacing traditional power energy sources such as lead-acid batteries, nickel-cadmium batteries, and nickel-metal hydride batteries due to their high operating voltage, light weight, small size, no memory effect, low self-discharge, and long cycle life.

[0004] Existing lithium-ion battery packs integrate multiple single cells together, but the connections between each single cell are not stable enough, and the connections between the single cells are prone to falling off, resulting in low reliability and affecting the normal use of the lithium-ion battery pack. Utility Model Content

[0005] The purpose of the utility model is to provide a lithium-ion power battery pack, aiming to solve the technical problem in the prior art that the connection between single cells is not stable enough and the connection of the single cells is easy to fall off, which affects the normal use of the lithium-ion battery pack.

[0006] To achieve the above-mentioned purpose, the lithium-ion power battery pack provided by the embodiment of the present invention includes a single cell, a fixing frame and an electrode fixing plate, wherein the single cell is connected to the fixing frame and the electrode fixing plate respectively;

[0007] The single battery comprises a cell and an electrode sheet, the electrode sheet is connected to the cell and to the electrode fixing sheet, and the cell abuts against the fixing frame; a plurality of single batteries are provided, and adjacent single batteries are spaced apart to form a battery pack;

[0008] The fixing frame includes a fixing frame body and a fixing plate. A fixing hole is provided in the middle of the fixing frame body. One end of the fixing plate is connected to the fixing frame body, and the other end extends above the fixing hole and partially overlaps with the fixing hole. There are multiple fixing frames, which abut against the single battery. Two fixing frames are provided on one single battery. Adjacent fixing frames are connected to each other. Multiple fixing frames abut against the battery pack and fix the battery pack.

[0009] There are multiple electrode fixing plates, which are connected to the battery pack.

[0010] As an optional solution of the present invention, the electrode sheet includes a positive electrode sheet and a negative electrode sheet, and the positive electrode sheet and the negative electrode sheet are both fixedly connected to the battery cell.

[0011] As an optional solution of the present invention, the electrode fixing plate includes a positive electrode fixing plate and a negative electrode fixing plate. The positive electrode fixing plate is fixedly connected to two or more positive electrode plates at the same time and fixes the adjacent single batteries.

[0012] As an optional solution of the present invention, the negative electrode fixing plate is fixedly connected to two or more negative electrode plates at the same time, and fixes the adjacent single batteries.

[0013] As an optional solution of the present invention, the electrode fixing plate is made of nickel-hydrogen material.

[0014] As an optional solution of the present invention, each of the fixing frames is provided with four fixing pieces, and the four fixing pieces are respectively fixedly connected to the four corners of the fixing frame body.

[0015] The above one or more technical solutions in the lithium-ion power battery pack provided by the embodiment of the present invention have at least one of the following technical effects:

[0016] The lithium-ion power battery pack provided by the present application includes a single cell, a fixing frame and an electrode fixing plate. By providing multiple fixing frames, the multiple fixing frames are fixedly connected to the single cell, one single cell is connected to two fixing frames, adjacent fixing frames are fixedly connected to each other, and the multiple fixing frames are fixedly connected to the battery pack to fix the battery pack. By providing multiple electrode fixing plates, the multiple electrode fixing plates are fixedly connected to the battery pack, thereby fixing the battery pack. The lithium-ion power battery pack provided by the present application has a more stable connection between the single cells, is not easy to fall off, improves reliability, and can ensure the normal use of the lithium-ion power battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0018] Figure 1 This is a schematic structural diagram of a lithium-ion power battery pack provided in an embodiment of the present utility model.

[0019] Figure 2A three-dimensional diagram of a lithium-ion power battery pack provided in an embodiment of the present utility model.

[0020] Figure 3 This is a schematic structural diagram of a fixing frame for a lithium-ion power battery pack provided by an embodiment of the present utility model.

[0021] Among them, the reference numerals in the figures are:

[0022] 1. Single cell; 2. Fixing frame; 3. Electrode fixing plate; 4. Battery pack;

[0023] 11. Battery cell; 12. Electrode sheet; 13. Positive electrode sheet; 14. Negative electrode sheet;

[0024] 21. Fixing frame body; 22. Fixing piece; 23. Fixing hole;

[0025] 31. Positive electrode fixing plate; 32. Negative electrode fixing plate. DETAILED DESCRIPTION

[0026] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0027] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0029] In the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium; internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0030] In one embodiment of the present invention, Figures 1 to 3 As shown, a lithium-ion power battery pack is provided, including a single cell 1, a fixing frame 2 and an electrode fixing plate 3, wherein the single cell 1 is connected to the fixing frame 2 and the electrode fixing plate 3 respectively.

[0031] The single battery 1 includes a cell 11 and an electrode sheet 12. The electrode sheet 12 is fixedly connected to the cell 11 and to the electrode fixing sheet 3. The cell 11 abuts the fixing frame 2. Multiple single batteries 1 are provided, with adjacent single batteries 1 spaced apart to form a battery pack 4. The multiple single batteries 1 are fixed by the electrode fixing sheet 3 and the fixing frame 2.

[0032] The fixing frame 2 includes a fixing frame body 21 and a fixing plate 22. A fixing hole 23 is defined in the center of the fixing frame body 21. One end of the fixing plate 22 is fixedly connected to the fixing frame body 21, while the other end extends above and partially overlaps the fixing hole 23. Multiple fixing frames 2 are provided, and they abut against the battery cells 1. Two fixing frames 2 are provided for each battery cell 1, with adjacent fixing frames 2 fixedly connected to each other. Multiple fixing frames 2 abut against the battery pack 4, securing the battery pack 4.

[0033] There are multiple electrode fixing plates 3 , which are fixedly connected to the battery pack 4 , thereby fixing the battery pack 4 .

[0034] The lithium-ion power battery pack provided by the present application is provided with multiple fixing frames 2, and the multiple fixing frames 2 are fixedly connected to the single cells 1. One single cell 1 is connected to two fixing frames 2, and adjacent fixing frames 2 are fixedly connected to each other. The multiple fixing frames 2 are fixedly connected to the battery pack 4 and fix the battery pack 4. By providing multiple electrode fixing plates 3, the multiple electrode fixing plates 3 are fixedly connected to the battery pack 4, thereby fixing the battery pack 4. In the lithium-ion power battery pack provided by the present application, the connection between the single cells 1 is more stable and not easy to fall off, thereby improving reliability and ensuring the normal use of the lithium-ion power battery pack.

[0035] In another embodiment of the present invention, the electrode sheet 12 of the lithium-ion power battery pack includes a positive electrode sheet 13 and a negative electrode sheet 14 , and both the positive electrode sheet 13 and the negative electrode sheet 14 are fixedly connected to the battery cell 11 .

[0036] In another embodiment of the present invention, the electrode fixing plate 3 of the lithium-ion power battery pack includes a positive electrode fixing plate 31 and a negative electrode fixing plate 32. The positive electrode fixing plate 31 is fixedly connected to two or more positive electrode plates 13 at the same time, and fixes the adjacent single cells 1, thereby fixing the upper part of the single cell 1.

[0037] In another embodiment of the present invention, the negative electrode fixing plate 32 of the lithium-ion power battery pack is simultaneously fixedly connected to two or more negative electrode plates 14 and fixes adjacent single cells 1, thereby fixing the lower portion of the single cells 1. The multiple single cells 1 are fixed by the positive electrode fixing plate 31 and the negative electrode fixing plate 32, thereby fixing the battery pack 4.

[0038] In another embodiment of the present invention, the electrode fixing plate 3 of the lithium-ion power battery pack is made of nickel-hydrogen material.

[0039] In another embodiment of the present invention, each mounting frame 2 of the lithium-ion power battery pack is provided with four fixing plates 22, which are fixedly connected to the four corners of the mounting frame body 21. The four fixing plates 22 are provided to position and secure the individual batteries 1.

[0040] The lithium-ion power battery pack provided by the present application is provided with multiple fixing frames 2, and the multiple fixing frames 2 are fixedly connected to the single cells 1. One single cell 1 is connected to two fixing frames 2, and adjacent fixing frames 2 are fixedly connected to each other. The multiple fixing frames 2 are fixedly connected to the battery pack 4 and fix the battery pack 4. By providing multiple electrode fixing plates 3, the multiple electrode fixing plates 3 are fixedly connected to the battery pack 4, thereby fixing the battery pack 4. In the lithium-ion power battery pack provided by the present application, the connection between the single cells 1 is more stable and not easy to fall off, thereby improving reliability and ensuring the normal use of the lithium-ion power battery pack.

[0041] 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 and improvements 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 lithium-ion power battery pack, characterized in that: It includes a single cell, a fixing frame and an electrode fixing plate, wherein the single cell is connected to the fixing frame and the electrode fixing plate respectively; The single battery comprises a cell and an electrode sheet, the electrode sheet is connected to the cell and to the electrode fixing sheet, and the cell abuts against the fixing frame; a plurality of single batteries are provided, and adjacent single batteries are spaced apart to form a battery pack; The fixing frame includes a fixing frame body and a fixing plate. A fixing hole is provided in the middle of the fixing frame body. One end of the fixing plate is connected to the fixing frame body, and the other end extends above the fixing hole and partially overlaps with the fixing hole. There are multiple fixing frames, which abut against the single battery. Two fixing frames are provided on one single battery. Adjacent fixing frames are connected to each other. Multiple fixing frames abut against the battery pack and fix the battery pack. There are multiple electrode fixing plates, which are connected to the battery pack.

2. A lithium-ion power battery pack according to claim 1, characterized in that: The electrode sheets include a positive electrode sheet and a negative electrode sheet, and both the positive electrode sheet and the negative electrode sheet are fixedly connected to the battery cell.

3. A lithium-ion power battery pack according to claim 2, characterized in that: The electrode fixing plate includes a positive electrode fixing plate and a negative electrode fixing plate. The positive electrode fixing plate is fixedly connected to two or more positive electrode plates at the same time and fixes the adjacent single batteries.

4. A lithium-ion power battery pack according to claim 3, characterized in that: The negative electrode fixing plate is fixedly connected to two or more negative electrode plates at the same time, and fixes the adjacent single batteries.

5. The lithium-ion power battery pack according to claim 1, characterized in that: The electrode fixing plate is made of nickel-hydrogen material.

6. The lithium-ion power battery pack according to claim 1, characterized in that: Each of the fixing frames is provided with four fixing pieces, and the four fixing pieces are respectively fixedly connected to the four corners of the fixing frame body.

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