Air-cooled energy storage Pack bag

Abstract

The utility model provides an air-cooled energy storage pack which comprises a shell and a plurality of batteries arranged in an inner cavity of the shell. The inner cavity of the shell is provided with a plurality of placing positions for placing batteries, and the bottom surface of each battery is bonded and fixed with the bottom surface of the inner cavity of the shell through a double faced adhesive tape. The integrated energy storage Pack without a cover plate is adopted, so that the installation efficiency is improved, the heat management of the battery pack is obviously optimized, the temperature of the battery can be reduced at high temperature, the temperature of the battery is increased due to the fact that the battery releases heat in the charging and discharging process at low temperature, the proper temperature of the battery is kept when the battery works efficiently, and the service life of the battery pack is prolonged. Therefore, the service life of the battery is prolonged, and the overall reliability of the system is improved.

Description

Technical Field

[0001] This utility model relates to the field of energy storage battery technology, and in particular to an air-cooled energy storage pack. Background Technology

[0002] With increasing focus on environmental impact and climate change, the global energy industry is gradually shifting towards cleaner and more sustainable solutions. Renewable energy, particularly solar and wind power, has made significant progress, and its decreasing costs are enhancing its competitiveness in the global energy market. However, the power generation of renewable energy is affected by weather and diurnal variations. Therefore, the development of energy storage technology has become crucial, with battery storage being a major solution. It can store electricity generated from renewable energy sources and release it when needed to balance grid load and provide a continuous power supply.

[0003] In applications of battery packs used for storing electrical energy, if there is a large temperature difference between the cells, it will lead to an uneven cycle life of the cells within the energy storage battery pack, resulting in a "weakest link" effect and reducing the cycle life of the entire energy storage battery pack.

[0004] Patent application CN221574048U discloses an air duct structure for an energy storage battery pack, including: a base plate, a top cover plate, a panel, a cell module, an air duct cover plate, an air duct partition plate, and a fan. This application uses the air duct cover plate to isolate the first and second air ducts, which can better balance the temperature difference of the entire energy storage battery pack and reduce the temperature difference impact caused by the heat generated by the cells and their tabs. However, the top cover plate in this application reduces heat dissipation efficiency, and thermal management at high temperatures in the battery pack needs improvement. Utility Model Content

[0005] To address the aforementioned problems in the prior art, this invention provides an air-cooled energy storage pack, which can significantly improve the cooling efficiency of the battery pack at high temperatures and ensure that the battery maintains a suitable temperature when operating at high efficiency.

[0006] This utility model provides an air-cooled energy storage pack, including a housing and multiple batteries disposed within the housing cavity. The top surface of the housing is open, and the inner cavity of the housing has several placement positions for placing the batteries. The bottom surface of each battery is bonded and fixed to the bottom surface of the inner cavity of the housing with double-sided adhesive. A total positive copper busbar and a total negative copper busbar are provided on one of the short sides of the housing, passing through the side wall of the housing.

[0007] The main positive copper busbar has a positive terminal hole at one end inside the housing and a positive output terminal hole at one end outside the housing; the main negative copper busbar has a negative terminal hole at one end inside the housing and a negative output terminal hole at one end outside the housing; the positive terminal of each battery is connected to the positive terminal hole via a positive terminal connecting wire, and the negative terminal of each battery is connected to the negative terminal hole via a negative terminal connecting wire.

[0008] Furthermore, the main positive copper busbar and the main negative copper busbar are integrally molded and embedded in the housing, which facilitates installation and reduces the assembly process.

[0009] Furthermore, the positive or negative terminal wiring harnesses of multiple batteries are secured by bolts that mate with the positive or negative terminal connection holes.

[0010] Furthermore, the inner cavity of the housing is divided into multiple placement positions along its length, and a slot is provided on the side wall of the inner cavity along the long side corresponding to two adjacent placement positions. A baffle is provided in the slot to separate and fix the battery.

[0011] Furthermore, the height of the baffle does not exceed 20% of the battery height, ensuring that the battery is supported and fixed while also providing ventilation channels between the batteries.

[0012] Furthermore, the inner cavity sidewall of the housing is provided with vertically thinned areas at intervals, and a heat dissipation channel is formed between the thinned areas and the sidewall of the battery. The setting of the heat dissipation channel increases the contact area between the battery and the air, thereby improving the heat dissipation effect.

[0013] Furthermore, the thinning area located on the longitudinal sidewall of the housing is directly opposite the location of the baffle, so that the thinning area and the space above the baffle form a heat dissipation channel.

[0014] Furthermore, the sidewalls of the housing are provided with heat dissipation holes, wherein the heat dissipation holes located on the longitudinal sidewalls of the housing are situated in the thinned area. Air entering from the opposing heat dissipation holes on both sides creates air convection in the space above the thinned area and the baffle, significantly improving heat dissipation efficiency.

[0015] Furthermore, the battery comprises two rows, each row comprising multiple batteries arranged along the length of the casing. In the same row of batteries, the positive electrode is located on one side and the negative electrode is located on the opposite side, facilitating the connection of the positive or negative electrode connecting wire.

[0016] Furthermore, the top opening of the housing extends outward to form a raised edge, which serves as a handle on both sides of the housing in the width direction to facilitate the movement of the energy storage pack and ensure that there is a gap between adjacent energy storage packs in the same layer to promote battery heat dissipation; the raised edge has mounting holes on both sides of the housing in the length direction for the energy storage packs to be installed between each other using threaded rods, which can be used to stack the energy storage packs during transportation.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: The energy storage pack with an integrated coverless design not only improves installation efficiency but also significantly optimizes the thermal management of the battery pack. It can promote battery cooling at high temperatures and increase the temperature of the battery during charging and discharging at low temperatures, ensuring that the battery maintains a suitable temperature when working efficiently, thereby extending the battery's service life and improving the overall reliability of the system. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the energy storage pack of this utility model.

[0019] Figure 2 This is a side view of the energy storage pack of this utility model.

[0020] Figure 3 This is a front view structural diagram of the energy storage pack of this utility model.

[0021] Figure 4 This is a top view of the energy storage pack of this utility model, including the connecting lines.

[0022] Figure 5 This is a schematic diagram of the structure of the energy storage pack of this utility model when the battery is not installed, as well as the total positive copper busbar and the total negative copper busbar inside the pack.

[0023] Figure 6 This is a schematic diagram of the structure of the energy storage pack of this utility model when the battery is not installed, as well as the total positive copper busbar and the total negative copper busbar on the outside of the housing.

[0024] Figure 7 This is a schematic diagram of the total positive copper busbar in the energy storage pack of this utility model.

[0025] Reference numerals: Housing 1, Placement position 11, Main positive copper busbar 12, Positive terminal hole 121, Positive output terminal hole 122, Positive connection wire 123.

[0026] Main negative copper busbar 13, negative terminal hole 131, negative output terminal hole 132, negative connection wire 133.

[0027] Card slot 14, baffle 15, thinning area 16, heat dissipation hole 17, protruding edge 18, mounting hole 19, battery 2. Detailed Implementation

[0028] like Figures 1-7 As shown, this utility model provides an air-cooled energy storage pack, including a housing 1 and multiple batteries 2 disposed within the inner cavity of the housing 1. The top surface of the housing 1 is open, and the inner cavity of the housing 1 has several placement positions 11 for placing the batteries 2. The bottom surface of each battery 2 is bonded and fixed to the bottom surface of the inner cavity of the housing 1 with double-sided adhesive. A total positive copper busbar 12 and a total negative copper busbar 13 are provided on one of the short sides of the housing 1, passing through the side wall of the housing 1. The total positive copper busbar 12 and the total negative copper busbar 13 are integrally embedded in the housing 1, which facilitates installation and reduces the assembly process.

[0029] The main positive copper busbar 12 has a positive terminal hole 121 at one end inside the housing 1 and a positive output terminal hole 122 at one end outside the housing 1; the main negative copper busbar 13 has a negative terminal hole 131 at one end inside the housing 1 and a negative output terminal hole 132 at one end outside the housing 1.

[0030] The casing 1 is made of SMC material, which not only has excellent flame retardant properties but also good aging and pollution resistance. These advantages ensure the insulation effect between batteries, thereby improving the overall safety and service life of the energy storage pack.

[0031] like Figure 4 As shown, the battery 2 includes two rows, and each row of batteries 2 includes multiple batteries arranged along the length of the casing 1. In the same row of batteries 2, the positive terminal is located on one side and the negative terminal is located on the opposite side, which facilitates the connection of the positive terminal connecting wire 123 or the negative terminal connecting wire 133. The positive terminal of each battery 2 is connected to the positive terminal hole 121 through the positive terminal connecting wire 123, and the negative terminal of each battery 2 is connected to the negative terminal hole 131 through the negative terminal connecting wire 133.

[0032] The positive or negative terminal wiring harnesses of multiple batteries 2 are fixed by bolts that mate with the positive terminal hole 121 or the negative terminal hole 131.

[0033] like Figure 5-6 As shown, the inner cavity of the housing 1 is divided into multiple placement positions 11 along the length direction. The inner cavity of the housing 1 has a slot 14 on the side wall along the long side corresponding to two adjacent placement positions 11. A baffle 15 is provided in the slot 14 to separate and fix the battery 2.

[0034] The height of the baffle 15 shall not exceed 20% of the height of the battery 2, so as to ensure that the battery 2 is supported and fixed while also leaving a ventilation channel between the batteries 2.

[0035] like Figure 1As shown, the inner cavity sidewall of the housing 1 is provided with vertically thinned areas 16 at intervals, forming a heat dissipation channel between the thinned areas 16 and the sidewall of the battery 2. The thinned areas 16 located on the longitudinal sidewall of the housing 1 are directly opposite the location of the baffle 15. Heat dissipation holes 17 are also provided on the sidewall of the housing 1, with the heat dissipation holes 17 located on the longitudinal sidewall of the housing 1 within the thinned areas 16. Air enters from the opposite heat dissipation holes 17 on both sides, creating air convection in the space above the thinned areas 16 and the baffle 15, significantly improving heat dissipation efficiency.

[0036] The top opening of the housing 1 extends outward to form a raised edge 18. The raised edge 18 serves as a handle on both sides of the housing 1 in the width direction, which facilitates the movement of the energy storage pack and ensures that there is a gap between adjacent energy storage packs in the same layer to promote heat dissipation of the battery 2. The raised edge 18 has mounting holes 19 on both sides of the housing 1 in the length direction for the adjacent energy storage packs to be installed with threaded rods, which can be used to stack the energy storage packs during transportation.

Claims

1. An air-cooled energy storage Pack comprising a housing and a plurality of cells disposed in a cavity of the housing, characterized in that, The shell top surface opening is arranged, the inner cavity of the shell has several placement positions for placing batteries, the bottom surface of each battery is fixed by double-sided adhesive and the bottom surface of the inner cavity of the shell, one side of one short side of the shell is provided with a total positive copper bar and a total negative copper bar penetrating through the side wall of the shell; The total positive copper bar has a positive terminal hole at one end of the inner side of the shell, and the total positive copper bar has a positive output terminal hole at the other end of the outer side of the shell; the total negative copper bar has a negative terminal hole at one end of the inner side of the shell, and the total negative copper bar has a negative output terminal hole at the other end of the outer side of the shell; the positive electrode of each battery is connected to the positive terminal hole through a positive connecting wire, and the negative electrode of each battery is connected to the negative terminal hole through a negative connecting wire.

2. The air-cooled energy storage Pack of claim 1, wherein, The inner cavity of the shell is divided into a plurality of placement positions along the length direction, and the inner cavity of the shell is provided with a clamping groove corresponding to the adjacent two placement positions on the side wall along the long side, and the clamping groove is provided with a baffle.

3. The air-cooled energy storage Pack of claim 2, wherein, The height of the baffle is not more than 20% of the height of the battery.

4. The air-cooled energy storage Pack of claim 2, wherein, The inner cavity of the shell is provided with a vertical thinning area between the side walls, and a heat dissipation channel is formed between the thinning area and the side wall of the battery.

5. The air-cooled energy storage Pack of claim 4, wherein, The thinning area on the length direction side wall of the shell is opposite to the position of the baffle.

6. The air-cooled energy storage Pack of claim 4, wherein, The side wall of the shell is also provided with a heat dissipation hole, wherein the heat dissipation hole on the length direction side wall of the shell is located in the thinning area.

7. The air-cooled energy storage Pack of claim 1, wherein, The battery includes two rows, each row of batteries includes a plurality of batteries arranged along the length direction of the shell, the positive electrode is located on one side in the same row of batteries, and the negative electrode is located on the opposite side.

8. The air-cooled energy storage Pack of claim 1, wherein, The top opening of the shell extends outward to form a convex edge, the convex edge serves as a handle on both sides of the width direction of the shell; the convex edge is provided with a mounting hole for mounting adjacent energy storage packs in the upward and downward directions by using a threaded rod.

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