A new type of compression and impact resistant battery pack structure

Abstract

This utility model discloses a novel pressure- and impact-resistant battery pack structure, including a reinforcing ring shell, shell ribs, a bottom liquid cooling plate, and an inner liner plate. The bottom liquid cooling plate is installed at the bottom of the reinforcing ring shell. The shell ribs are disposed on the outer shell wall of the reinforcing ring shell. The inner shell wall of the reinforcing ring shell has inner rib grooves corresponding to the shell ribs. The inner liner plate is disposed on the inner shell wall of the reinforcing ring shell. The inner liner plate has inner rib ribs matching the inner rib grooves on the side near the reinforcing ring shell. The inner rib ribs are disposed within the inner rib grooves. The battery cell assembly is disposed within the ring shell. The beneficial effects are: the shell ribs on the outer side of the reinforcing ring shell and the inner liner plate provide impact protection for the internal battery cell assembly, resulting in good pressure and impact resistance. The inner rib grooves, combined with the non-metallic inner liner plate, can significantly reduce weight while achieving pressure and impact resistance, thus providing good protective performance.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a novel pressure- and impact-resistant battery pack structure. Background Technology

[0002] The booming development of the new energy industry has continuously increased the requirements for battery performance. As a key part protecting the internal components of the battery, the rationality, reliability and performance of the battery casing directly affect the overall performance of the battery. In new energy vehicles and energy storage equipment, battery safety, range and cost control are all crucial considerations. The casing of traditional battery packs is usually made into a rectangular shell with a flat outer side, but its side impact and pressure resistance is not high. Some battery pack casings have multiple ribs added to the outer side, but since the ribs are mostly solid metal structures, they greatly increase the weight of the battery pack. Therefore, it is necessary to further improve the pressure and impact resistance of the battery pack under the premise of controllable weight to improve the overall performance of the battery pack. Utility Model Content

[0003] The purpose of this invention is to provide a novel pressure- and impact-resistant battery pack structure to solve the above-mentioned problems.

[0004] This utility model achieves the above objectives through the following technical solutions:

[0005] A novel pressure- and impact-resistant battery pack structure includes a reinforcing ring shell, shell ribs, a bottom liquid cooling plate, and an inner liner plate. The bottom liquid cooling plate is installed at the bottom of the reinforcing ring shell. The shell ribs are disposed on the outer shell wall of the reinforcing ring shell. The inner shell wall of the reinforcing ring shell has inner rib grooves corresponding to the shell ribs. The inner liner plate is disposed on the inner shell wall of the reinforcing ring shell. The inner liner plate has inner rib ribs matching the inner rib grooves on one side of the inner liner plate near the reinforcing ring shell. The inner rib ribs are disposed in the inner rib grooves. A battery cell assembly is disposed inside the ring shell. A panel mounting hole is provided on one side shell wall of the reinforcing ring shell, and a battery cell unit panel is installed in the panel mounting hole.

[0006] Furthermore, the bottom liquid cooling plate has a liquid cooling cavity inside, and the liquid cooling cavity is divided into liquid cooling channels by several alternately distributed flow channel baffles. Liquid cooling inlet and outlet pipes are installed at the inlet and outlet of the liquid cooling channels.

[0007] Furthermore, a lower edge strip is installed on the outer bottom of the reinforcing ring shell, and the lower edge strip is provided with a plurality of bolt holes.

[0008] Furthermore, the outer top of the reinforcing ring shell is provided with an upper edge strip, and a cover is installed on the top of the upper edge strip by screws.

[0009] Furthermore, the shell reinforcement is composed of at least two vertical rib shells and at least two horizontal rib shells, and the at least two vertical rib shells and the at least two horizontal rib shells are arranged vertically.

[0010] The beneficial effects of this utility model are as follows: by strengthening the shell ribs on the outer side of the ring shell and the inner lining plate to provide impact protection for the internal battery cell assembly, it has good pressure and impact resistance performance. The internal rib groove is provided, and in conjunction with the non-metallic inner lining plate, the weight can be reduced to a large extent while achieving pressure and impact resistance, thus giving it good protective performance. Attached Figure Description

[0011] Figure 1 This is a structural diagram of the novel pressure-resistant and impact-resistant battery pack structure described in this utility model;

[0012] Figure 2 This is a structural diagram of the reinforced ring shell and inner liner plate of the novel pressure-resistant and impact-resistant battery pack structure described in this utility model;

[0013] Figure 3 This is a diagram of the internal structure of the bottom liquid cooling plate of the novel pressure-resistant and impact-resistant battery pack structure described in this utility model.

[0014] The annotations in the attached figures are explained as follows:

[0015] 1. Reinforcing ring shell; 2. Shell ribs; 21. Vertical rib shell; 22. Horizontal rib shell; 23. Inner rib groove; 3. Bottom liquid cooling plate; 31. Liquid cooling cavity; 32. Flow channel baffle; 4. Cover body; 5. Cell unit panel; 6. Upper edge strip; 7. Lower edge strip; 8. Cell assembly; 9. Inner liner plate; 91. Inner liner plate rib; 10. Liquid cooling inlet and outlet pipes; 11. Panel mounting holes. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings:

[0017] like Figures 1-3 As shown, a novel pressure- and impact-resistant battery pack structure includes a reinforcing ring shell 1, a shell rib 2, a bottom liquid cooling plate 3, and an inner liner 9. The bottom liquid cooling plate 3 is installed at the bottom of the reinforcing ring shell 1, and the shell rib 2 is set on the outer shell wall of the reinforcing ring shell 1 to enhance the pressure- and impact-resistant performance of the reinforcing ring shell 1.

[0018] The inner shell wall of the reinforcing ring shell 1 is provided with an inner rib groove 23 corresponding to the shell rib 2. The setting of the inner rib groove 23 makes the shell wall thickness at the shell rib 2 the same as the shell wall thickness of the reinforcing ring shell 1. At the same time, it reduces the increase in mass caused by the addition of the shell rib 2, making its overall weight controllable.

[0019] The inner wall of the reinforcing ring shell 1 is provided with an inner liner plate 9. The inner liner plate 9 is provided with an inner liner plate rib 91 that matches the inner rib groove 23 on one side near the reinforcing ring shell 1. The inner liner plate rib 91 is located in the inner rib groove 23. In this embodiment, the inner liner plate 9 is a non-metallic material and the reinforcing ring shell 1 is an aluminum alloy shell.

[0020] The reinforcing ring shell 1 has a battery cell assembly 8 inside the ring. A panel mounting hole 11 is provided on one side of the shell wall of the reinforcing ring shell 1. A battery cell unit panel 5 is installed in the panel mounting hole 11. This is a common structure of battery packs, and its installation method, structure and circuit connection relationship are not further limited.

[0021] like Figures 1-3 As shown, this utility model also discloses the following more optimized specific structures:

[0022] The bottom liquid cooling plate 3 has a liquid cooling cavity 31 inside. The liquid cooling cavity 31 is divided into liquid cooling channels by several alternately distributed flow channel baffles 32. Liquid cooling inlet and outlet pipes 10 are installed at the inlet and outlet of the liquid cooling channels for connecting to external circulating coolant.

[0023] A lower edge strip 7 is installed on the bottom outer side of the reinforcing ring shell 1. The lower edge strip 7 has several bolt holes to facilitate the stacking of multiple of the novel pressure-resistant and impact-resistant battery pack structures.

[0024] The outer top of the reinforcing ring shell 1 is provided with an upper edge strip 6, and a cover 4 is installed on the top of the upper edge strip 6 by screws to protect the internal battery cell assembly 8.

[0025] The shell rib 2 is composed of at least two vertical rib shells 21 and at least two horizontal rib shells 22, and the at least two vertical rib shells 21 and at least two horizontal rib shells 22 are arranged vertically.

[0026] like Figures 1-3 The novel pressure- and impact-resistant battery pack structure shown has good pressure and impact resistance performance. It mainly protects the internal cell group 8 from impact by reinforcing the outer shell ribs 2 and the inner liner plate 9 on the outer side of the ring shell 1. In the battery pack structure, the setting of the outer shell reinforcing ribs will greatly increase the weight of the battery pack. Therefore, an inner rib groove 23 is provided inside to reduce its weight. In addition, with the non-metallic inner liner plate 9, the weight can be reduced to a large extent while achieving pressure and impact resistance, so that it has good protective performance.

[0027] Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of this utility model as claimed.

Claims

1. A novel compression and impact resistant battery pack structure, characterized by: The device includes a reinforcing ring shell, shell ribs, a bottom liquid cooling plate, and an inner liner plate. The bottom liquid cooling plate is installed at the bottom of the reinforcing ring shell. The shell ribs are located on the outer shell wall of the reinforcing ring shell. The inner shell wall of the reinforcing ring shell has inner rib grooves corresponding to the shell ribs. The inner liner plate is located on the inner shell wall of the reinforcing ring shell. The inner liner plate has inner rib ribs matching the inner rib grooves on the side of the inner liner plate near the reinforcing ring shell. The inner liner plate ribs are located in the inner rib grooves. A battery cell assembly is located inside the ring shell. A panel mounting hole is located on one side shell wall of the reinforcing ring shell. A battery cell unit panel is installed in the panel mounting hole.

2. A novel compression and impact resistant battery pack structure according to claim 1, characterized in that: The bottom liquid cooling plate has a liquid cooling cavity inside, and the liquid cooling cavity is divided into liquid cooling channels by several alternately distributed flow channel baffles. Liquid cooling inlet and outlet pipes are installed at the inlet and outlet of the liquid cooling channels.

3. A novel compression and impact resistant battery pack structure according to claim 1, characterized in that: The outer bottom of the reinforcing ring shell is equipped with a lower edge strip, and the lower edge strip is provided with several bolt holes.

4. The novel pressure- and impact-resistant battery pack structure according to claim 1, characterized in that: The outer top of the reinforcing ring shell is provided with an upper edge strip, and a cover is installed on the top of the upper edge strip by screws.

5. A novel compression and impact resistant battery pack structure according to claim 1, characterized in that: The shell reinforcement consists of at least two vertical ribs and at least two horizontal ribs, which are arranged vertically.

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