Battery box body

Abstract

The utility model provides a battery box body which comprises a battery box, a cooling plate is arranged at the bottom end of the battery box, a plurality of heat insulation pads are arranged at the bottom end of the cooling plate, a fixing frame is arranged at the bottom end of the cooling plate, the heat insulation pads are all arranged in the fixing frame, the fixing frame is attached to the cooling plate, and the fixing frame and the cooling plate are fixed in a welding mode. A bottom protection plate is arranged at the bottom end of the fixing frame, the shape of the bottom protection plate is consistent with that of the cooling plate, and the bottom protection plate and the battery box are fixed in a welding mode; the fixing frame is arranged, the heat insulation pads can be placed in the fixing frame, the heat insulation pads with the number equal to that of the mounting parts can be selected according to the size of the battery box, and therefore the heat insulation device can be suitable for the battery boxes with different sizes, the heat insulation pad parts need to occupy more space in the battery box, and practicability is high.

Description

Technical Field

[0001] The utility model relates to the field of lithium ion batteries, in particular to a battery box. 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 have integrated cooling and heat dissipation structures.

[0003] Existing battery boxes are usually provided with thermal insulation pads for heat preservation and heat insulation. Existing thermal insulation pads are manufactured according to the size of the box and cannot be applied to battery boxes of different sizes. In addition, existing thermal insulation pads need to occupy more space in the battery box and have poor practicality.

[0004] To this end, we propose a battery box 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.

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

[0007] A battery box comprises a battery box, wherein a cooling plate is provided at the bottom of the battery box, a plurality of thermal insulation pads are provided at the bottom of the cooling plate, a fixing frame is provided at the bottom of the cooling plate, and the plurality of thermal insulation pads are all arranged in the fixing frame.

[0008] Further preferably, the fixing frame and the cooling plate are fitted together, and the fixing frame and the cooling plate are fixed by welding.

[0009] Further preferably, a bottom guard plate is provided at the bottom end of the fixing frame, the shape of the bottom guard plate is consistent with that of the cooling plate, and the bottom guard plate and the battery box are fixed by welding.

[0010] Further preferably, the bottom guard plate is provided with fixing bolts, and the bottom guard plate is fixed by the fixing bolts and the cooling plate.

[0011] Further preferably, a fixing groove is embedded in the middle position of the bottom guard plate, and a bolt is arranged in the fixing groove.

[0012] Further preferably, the bottom guard plate is provided with an embedded limiting groove, and the thermal insulation pads are all located in the limiting groove.

[0013] Further preferably, the size of the limiting groove is larger than the size of the thermal insulation pad, and the surface of the limiting groove is a rough surface.

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

[0015] In the utility model, a fixing frame is provided, so that the heat insulating pad can be placed in the fixing frame, and the same number of heat insulating pads can be selected for installation according to the size of the battery box, so that it can be suitable for battery boxes of different sizes, and the heat insulating pad part needs to occupy more space in the battery box, which has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the battery box structure provided by the utility model;

[0017] Figure 2 for Figure 1 Schematic diagram of the explosion structure of the battery box;

[0018] Figure 3 for Figure 1 Schematic diagram of the bottom structure of the battery box.

[0019] In the figure: 1. battery box; 2. cooling plate; 3. thermal insulation pad; 4. fixing frame; 5. bottom guard plate; 6. fixing bolts; 7. fixing groove; 8. limiting groove. Implementation

[0020] Reference Figure 1-Figure 3 A battery box 1 body comprises a battery box 1, a cooling plate 2 is arranged at the bottom of the battery box 1, a plurality of heat-insulating pads 3 are arranged at the bottom of the cooling plate 2, the heat-insulating pads 3 are made of fireproof cotton material, the fireproof cotton material can not only block the external heat, but also keep the internal temperature, when used in a hot environment, it can block the external heat and keep the good temperature after the internal cooling cycle, when used in a cold environment, it can block the external cold air and keep the internal temperature of the battery box 1, so as to effectively improve the service life of the battery cell in the battery box 1, and effectively improve the energy density of the battery cell in the battery box 1;

[0021] A fixing frame 4 is provided at the bottom end of the cooling plate 2, and a plurality of heat insulating pads 3 are arranged in the fixing frame 4. The fixing frame 4 is formed by splicing a plurality of fixing pillars, and then the fixing frame 4 is welded to the bottom guard plate 5 by welding. The fixing frame 4 can be conveniently assembled according to the size of the battery box 1 and the number of heat insulating pads 3;

[0022] By providing a fixing frame 4, the thermal insulation pad 3 can be placed in the fixing frame 4, and the same number of thermal insulation pads 3 can be selected for installation according to the size of the battery box 1, so that it can be suitable for battery boxes 1 of different sizes, and the thermal insulation pad 3 only needs to occupy more space in the battery box 1, which is highly practical.

[0023] The fixed frame 4 and the cooling plate 2 are fitted together, and the fixed frame 4 and the cooling plate 2 are fixed by welding. The installation method of the fixed frame 4 is to first weld it to the bottom guard plate 5. After the thermal insulation pad 3 is installed, the bottom guard plate 5 together with the fixed frame 4 are welded and fixed to the cooling plate 2. When the fixed frame 4 is welded to the bottom guard plate 5, the welding slag can be cleaned before welding to the cooling plate 2, which can reduce the negative impact of the welding slag on the welding quality.

[0024] A bottom guard plate 5 is provided at the bottom of the fixed frame 4, and the bottom guard plate 5 can protect the thermal insulation pad 3 and the cooling plate 2 at the bottom of the battery box 1, and can prevent the thermal insulation pad 3 and the cooling plate 2 from being damaged due to bumps. The shape of the bottom guard plate 5 is consistent with the cooling plate 2, so that the bottom guard plate 5 can completely cover the bottom of the cooling plate 2 and can effectively protect the bottom of the cooling plate 2. The bottom guard plate 5 and the battery box 1 are fixed by welding.

[0025] The bottom guard plate 5 is provided with fixing bolts 6, and the bottom guard plate 5 is fixed to the cooling plate 2 by the fixing bolts 6, so that the edge of the bottom guard plate 5 is fixed to the cooling plate 2 by welding, and the middle position of the bottom guard plate 5 is fixed by the fixing bolts 6, which can reduce the process difficulty during installation, and the bottom guard plate 5 can be easily installed and disassembled with the cooling plate 2, which is convenient for subsequent maintenance and saves time and effort.

[0026] A fixing groove 7 is embedded in the middle position of the bottom guard plate 5, and a bolt is arranged in the fixing groove 7. The fixing groove 7 is recessed toward the bottom guard plate 5, and the center position of the bottom guard plate 5 can be fixed by the bolt in the fixing groove 7. At the same time, the bolt is completely arranged in the recess of the bottom guard plate 5.

[0027] The bottom guard plate 5 is provided with an embedded limiting groove 8, and the thermal insulation pad 3 is located in the limiting groove 8. The thermal insulation pad 3 can be limited and fixed by the limiting groove 8. At the same time, the thermal insulation pad 3 does not need to occupy more internal space of the battery box 1, and more battery cells can be placed to effectively improve the energy density.

[0028] The size of the limiting groove 8 is larger than that of the thermal insulation pad 3, so that the thermal insulation pad 3 can be easily placed into the limiting groove 8, saving time and effort, and the surface of the limiting groove 8 is a rough surface, which can increase the friction between the contact surface of the limiting groove 8 and the thermal insulation pad 3, and can stably fix the thermal insulation pad 3 in the limiting groove 8, thereby improving the stability of the thermal insulation pad 3.

Claims

1. A battery box, comprising a battery box, wherein a cooling plate is provided at the bottom of the battery box, characterized in that: A plurality of heat-insulating pads are arranged at the bottom end of the cooling plate, and a fixing frame is arranged at the bottom end of the cooling plate, and the plurality of heat-insulating pads are arranged in the fixing frame.

2. A battery box according to claim 1, characterized in that: The fixing frame and the cooling plate are fitted together, and the fixing frame and the cooling plate are fixed by welding.

3. A battery box according to claim 1, characterized in that: A bottom guard plate is provided at the bottom end of the fixing frame. The shape of the bottom guard plate is consistent with that of the cooling plate. The bottom guard plate and the battery box are fixed by welding.

4. A battery box according to claim 3, characterized in that: The bottom guard plate is provided with fixing bolts, and the bottom guard plate is fixed by the fixing bolts and the cooling plate.

5. A battery box according to claim 3, characterized in that: A fixing groove is embedded in the middle position of the bottom guard plate, and a bolt is arranged in the fixing groove.

6. A battery box according to claim 3, characterized in that: The bottom guard plate is provided with an embedded limiting groove, and the thermal insulation pads are all located in the limiting groove.

7. A battery box according to claim 6, characterized in that: The size of the limiting groove is larger than the size of the thermal insulation pad, and the surface of the limiting groove is a rough surface.

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