Battery box convenient for glue injection

Abstract

The battery box body comprises a battery box, a box body top plate is arranged at the top end of the battery box, pressure relief valves are arranged at the two ends of the battery box, pressure relief openings are formed in the positions, corresponding to the pressure relief valves, of the battery box, glue injection openings are formed in the two ends of the box body top plate, and two glue injection plates are arranged at the two ends in the battery box. Through glue injection notches are formed in the top ends of the two glue injection plates, and round holes are formed in one sides of the two glue injection plates; through the arrangement of the glue injection plate, glue enters the glue injection plate through the glue injection notch and then is injected into the battery box body through the round hole, when the battery box body is subjected to the glue injection process, the injected glue is not easy to block the pressure release valve, the pressure release valve can be timely broken through when the pressure in the battery pack needs to be released, the pressure in the battery box is reduced, and the risk of thermal runaway can be reduced; and the explosion risk is reduced, and the safety is high.

Description

Technical Field

[0001] The utility model relates to the field of lithium ion batteries, in particular to a battery box which is convenient for glue injection. Background Art

[0002] A battery box is a group of batteries consisting of several single cells, a box body, a battery management system and related mounting structural parts. It has a standard battery box structure, battery box monitoring equipment, battery box connectors, battery box environmental control equipment, etc. Existing battery boxes usually require glue injection to fix the single cells in the battery box.

[0003] The glue injected into the existing battery box during the glue injection process can easily cause blockage at the pressure relief valve. When the pressure inside the battery pack needs to be relieved, the pressure relief valve cannot be broken in time. The high pressure inside the battery box will increase the risk of thermal runaway and the risk of explosion, resulting in poor safety.

[0004] To this end, we propose a battery box that is easy to inject glue to solve the above problems. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and provides a battery box which is convenient for glue injection.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A battery box that is convenient for glue injection, the battery box, wherein a box top plate is provided at the top of the battery box, pressure relief valves are provided at both ends of the battery box, pressure relief ports are provided on the battery box at positions corresponding to the pressure relief valves, glue injection ports are provided at both ends of the box top plate, a total of two glue injection plates are provided at both ends of the battery box, through glue injection slots are provided at the tops of the two glue injection plates, and round holes are provided on one side of the two glue injection plates.

[0008] Further preferably, a single cell is provided in the battery box, and the single cell is located on the inner side of the glue injection plate.

[0009] Further preferably, the glue injection plates are symmetrically arranged, and the top ends of the glue injection plates are flush with the top end surface of the battery box.

[0010] Further preferably, the circular holes all penetrate one side of the glue injection plate, the circular holes are evenly and regularly distributed, and the sizes of the circular holes are all consistent.

[0011] Further preferably, the glue injection ports all pass through the top plate of the box body, and the glue injection ports are all located directly above the glue injection plate.

[0012] Further preferably, the pressure relief valve and the pressure relief port are both located on one side of the glue injection plate, and the glue injection plate and the pressure relief port fit tightly.

[0013] Further preferably, the single battery cells are fixed by glue injection, and the top plate of the box body is fixed by welding.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] Through the setting of the glue injection plate, the glue enters the glue injection plate through the glue injection groove, and then is injected into the battery box through the circular hole. The glue injected into the battery box during the glue injection process is not easy to cause blockage at the pressure relief valve. When the pressure inside the battery pack needs to be relieved, the pressure relief valve can be broken in time, and the internal pressure of the battery box is reduced, which will reduce the risk of thermal runaway, reduce the risk of explosion, and enhance safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is an overall structural diagram of a battery box that is convenient for glue injection proposed by the utility model;

[0017] Figure 2 Schematic diagram of the internal structure of the battery box;

[0018] Figure 3 It is a schematic diagram of the structure of the glue injection plate;

[0019] Figure 4 Schematic diagram of the inner wall structure of the battery box.

[0020] In the figure: 1. battery box; 2. box top plate; 3. pressure relief valve; 4. glue injection port; 5. single battery cell; 6. glue injection plate; 7. glue injection notch; 8. round hole; 9. pressure relief port. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Reference Figure 1-4 A battery box 1 body that is convenient for glue injection, a battery box 1, a box top plate 2 is provided on the top of the battery box 1, and the size of the battery box 1 and the box top plate 2 can be customized according to needs, and can be suitable for single cells 4 of different sizes;

[0023] Both ends of the battery box 1 are provided with pressure relief valves 3, and the battery box 1 is provided with pressure relief ports 9 at positions corresponding to the pressure relief valves 3. When the internal pressure of the battery box 1 is relatively high, the pressure can be released through the pressure relief ports 9 and the pressure relief valves 3, thereby reducing potential safety hazards;

[0024] Glue injection ports 4 are provided at both ends of the box top plate 2, and two glue injection plates 6 are provided at both ends of the battery box 1. The tops of the two glue injection plates 6 are provided with through glue injection slots 7, and one side of the two glue injection plates 6 is provided with circular holes 8. Glue is injected through the glue injection ports 4, and the glue will flow into the glue injection plates 6 through the glue injection slots 7, and then flow into the battery box 1 through the circular holes 8.

[0025] By setting the glue injection plate 6, the glue enters the glue injection plate 6 through the glue injection notch 7, and is then injected into the battery box 1 through the circular hole 8. The glue injected into the battery box 1 during the glue injection process is not easy to cause blockage at the pressure relief valve 3. When the pressure inside the battery pack needs to be relieved, the pressure relief valve 3 can be broken in time, and the internal pressure of the battery box 1 is reduced, which will reduce the risk of thermal runaway and the risk of explosion, and has strong safety.

[0026] Single cells 4 are arranged evenly in the battery box 1. Glue flows in through the circular hole 8 and contacts the single cells 4 to fix the single cells 4. The single cells 4 are located on the inner side of the glue injection plate 6. The glue injection plate 6 can limit the single cells 4 while injecting glue.

[0027] The glue injection plate 6 is symmetrically arranged, so that the glue can be injected more evenly and the stability can be improved. The top of the glue injection plate 6 is flush with the top surface of the battery box 1, so that the inside of the battery box 1 can be filled with glue, and the glue will not be poured into the glue injection plate 6 again from the top of the glue injection plate 6. At the same time, it is also convenient to pull out the glue injection plate 6 after the subsequent glue injection is completed and the glue is solidified.

[0028] The circular holes 8 all penetrate one side of the glue injection plate 6, are evenly and regularly distributed, and have the same size so that the glue can flow into the battery box 1 evenly and at a uniform speed, without causing a phenomenon in which some part of the battery box 1 is not covered by glue.

[0029] The glue injection ports 4 all penetrate the box top plate 2, and the glue injection ports 4 are all located directly above the glue injection plate 6, so that after the glue injection plate 6 is installed, the box top plate 2 is covered, and glue is injected through the glue injection ports 4. When the glue in the battery box 1 solidifies, the box top plate 2 and the glue injection plate 6 are removed, and the glue injection plate 6 is filled with thermal insulation material, and then the box top plate 2 and the battery box 1 are welded, and the assembly of the battery box 1 can be completed, which is convenient and easy.

[0030] The pressure relief valve 3 and the pressure relief port 9 are both located on one side of the glue injection plate 6, and the glue injection plate 6 and the pressure relief port 9 fit tightly together, so that the glue during glue injection will not spread to the pressure relief port 9, and the pressure relief port 9 and the pressure relief valve 3 are not easily blocked, which will not affect the use of the pressure relief valve 3 and the pressure relief port 9.

[0031] The single battery cells 4 are all fixed by glue injection. The injected glue is a thermally conductive structural glue. While fixing the single battery cells 4, the single battery cells 4 can also dissipate heat to reduce the risk of thermal runaway. The top plate 2 of the box is fixed by welding, so that the top plate 2 of the box can be more stably fixed to the battery box 1.

Claims

1. A battery box convenient for glue injection, comprising a battery box, a top plate of the battery box, pressure relief valves at both ends of the battery box, and pressure relief ports at positions corresponding to the pressure relief valves on the battery box, characterized in that: Glue injection ports are provided at both ends of the box top plate, and two glue injection plates are provided at both ends of the battery box. Through glue injection slots are provided at the tops of the two glue injection plates, and round holes are provided on one side of the two glue injection plates.

2. A battery box that is easy to inject glue according to claim 1, characterized in that: A single cell is arranged in the battery box, and the single cell is located inside the glue injection plate.

3. A battery box that is easy to inject glue according to claim 1, characterized in that: The glue injection plates are symmetrically arranged, and the top ends of the glue injection plates are flush with the top end surfaces of the battery box.

4. A battery box that is easy to inject glue according to claim 1, characterized in that: The circular holes all penetrate one side of the glue injection plate, are evenly and regularly distributed, and have the same size.

5. A battery box convenient for glue injection according to claim 1, characterized in that: The glue injection ports all penetrate the top plate of the box body, and the glue injection ports are all located directly above the glue injection plate.

6. A battery box convenient for glue injection according to claim 1, characterized in that: The pressure relief valve and the pressure relief port are both located on one side of the glue injection plate, and the glue injection plate and the pressure relief port are fitted together.

7. A battery box convenient for glue injection according to claim 2, characterized in that: The single cells are fixed by glue injection, and the top plates of the boxes are fixed by welding.

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