Internal air-cooled battery packaging structure

Abstract

The utility model discloses an internal air-cooled battery packaging structure which comprises a battery cluster and an air-conditioning system, the battery cluster is composed of one battery layer or formed by sequentially stacking and connecting a plurality of battery layers from bottom to top; the battery layer comprises a battery box body with a top opening and a battery module, and a cross beam group for bearing the battery module is arranged in the battery box body; the battery module is placed on the cross beam group; gas flowing spaces are formed between the two sides of the cross beam group and the battery box body; the gas flowing spaces of the plurality of battery layers are communicated with one another; the top of the battery cluster is connected with an air conditioning system; and the air conditioning system is used for adjusting the temperature of gas in the battery cluster. According to the internal air-cooled battery packaging structure, cooling liquid does not need to be used, the contact area of the battery module and airflow is large, the cooling effect is good, and the cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy, in particular to an internal air-cooled battery packaging structure. Background Art

[0002] With the development of the new energy industry, batteries are being used more and more widely, and the amount of use is increasing, which puts higher and higher requirements on the cost of battery packaging. At present, most batteries are cooled by water cooling at the bottom of the battery cell. The water cooling structure is complex, the cost is high, and the cooling effect is also insufficient. Therefore, a low-cost and efficient cooling battery packaging structure is needed. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an internal air-cooled battery packaging structure in view of the deficiencies of the above-mentioned prior art. The present internal air-cooled battery packaging structure adopts air cooling to cool the battery module without the need for coolant, and the area in contact with the airflow is large, so the cooling effect is good. Compared with the existing water-cooling structure with a complex structure designed at the bottom of the battery, the present invention has a simple structure and low cost.

[0004] In order to achieve the above technical purpose, the technical solution adopted by the utility model is:

[0005] An internal air-cooled battery packaging structure includes a battery cluster and an air conditioning system;

[0006] The battery cluster is composed of one battery layer or a plurality of battery layers stacked and connected in sequence from bottom to top;

[0007] The battery layer includes a battery box with an open top and a battery module, wherein a crossbeam group for carrying the battery module is arranged in the battery box; the battery module is placed on the crossbeam group; and a gas flow space is arranged between the two sides of the crossbeam group and the battery box;

[0008] The gas flow spaces of the multiple battery layers are interconnected;

[0009] The top opening of the battery cluster is connected to an air conditioning system, and the air conditioning system is used to adjust the temperature of the gas inside the battery cluster.

[0010] As a further improved technical solution of the utility model, a left gas flow space is arranged between the left side of the beam group and the left side wall of the battery box, and a right gas flow space is arranged between the right side of the beam group and the right side wall of the battery box; the left gas flow spaces of multiple battery layers are connected, and the right gas flow spaces of multiple battery layers are connected.

[0011] As a further improved technical solution of the utility model, a left channel and a right channel are opened at the bottom of the battery box, and the left gas flow spaces of multiple battery layers are interconnected through the left channel, and the right gas flow spaces of multiple battery layers are interconnected through the right channel.

[0012] As a further improved technical solution of the utility model, the height of the top of the battery module in the battery box is smaller than the height of the top of the battery box, so that a gas flow gap is formed between the top of the battery module and the top of the battery box; the gas flow gap is connected to the gas flow space on both sides.

[0013] As a further improved technical solution of the utility model, it also includes a transverse fan for blowing the gas in the gas flow space on one side to the gas flow space on the other side through the gas flow gap.

[0014] As a further improved technical solution of the utility model, the battery cluster is filled with flame-resistant gas, and the battery cluster is connected to a flexible component for balancing the volume change of the gas.

[0015] As a further improved technical solution of the utility model, the beam group includes a plurality of U-shaped beams, and the plurality of U-shaped beams are arranged in sequence from left to right, and battery modules are placed on the U-shaped beams.

[0016] As a further improved technical solution of the utility model, the bottom of the battery cluster is fixedly connected with a base.

[0017] The beneficial effects of the utility model are:

[0018] The utility model includes at least one battery box, in which a crossbeam group for carrying a battery module is arranged, and a gas flow space is arranged between the two sides of the crossbeam group and the battery box. The battery module is placed on the crossbeam group, and the above devices form a battery layer. One battery layer or multiple battery layers are stacked to form a battery cluster. An air conditioning system is arranged on the top of the battery cluster to adjust the temperature of the gas inside the battery cluster, and at the same time force the gas inside the battery cluster to flow, so as to achieve temperature control of the batteries in the battery cluster.

[0019] In order to achieve better airflow temperature control effect, the utility model can set a transverse fan between the two battery layers.

[0020] In order to reduce the risk of fire, the utility model can fill the battery cluster with flame-retardant gas, and at the same time, a flexible component for balancing the volume change of the gas is arranged outside.

[0021] The structure of the utility model adopts air cooling, does not need to use coolant, and the area of ​​the battery module in contact with the airflow is large, the cooling effect is good, and compared with the existing water cooling structure with a complex structure designed at the bottom of the battery, the utility model has a simple structure and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of the structure of the battery box of this embodiment.

[0023] Figure 2 It is a top view of the structure of the battery box of this embodiment.

[0024] Figure 3 Schematic diagram of the structure of the battery layer of this embodiment.

[0025] Figure 4 FIG. 4 is a schematic diagram of the structure of the battery cluster of this embodiment.

[0026] Figure 5 FIG. 4 is a cross-sectional view of the battery cluster of this embodiment. DETAILED DESCRIPTION

[0027] The specific implementation of the utility model is further described below according to the accompanying drawings:

[0028] An internal air-cooled battery packaging structure includes a battery cluster and an air conditioning system 8.

[0029] like Figure 4-5 As shown, the battery cluster includes at least one battery layer 7. If the battery cluster includes multiple battery layers 7, the battery cluster is formed by stacking and fixing the multiple battery layers 7 in sequence from bottom to top. The top of the battery cluster is fixedly connected to an air conditioning system 8, and the bottom of the battery cluster is fixedly connected to a base 9. Figure 4-5 The middle battery cluster includes a plurality of battery layers 7 .

[0030] like Figure 3 As shown, the battery layer 7 includes a battery box 1 with an open top and a battery module 6. Figure 1 As shown, a crossbeam group for carrying a battery module 6 is provided in the battery box 1; the battery module 6 is placed on the crossbeam group; gas flow spaces are provided between the two sides of the crossbeam group and the battery box 1; and the gas flow spaces of multiple battery layers 7 are interconnected. The crossbeam group includes multiple U-shaped crossbeams 2, which are arranged in sequence from left to right, and the U-shaped crossbeams 2 are fixedly connected to the inside of the battery box 1, and the battery module 6 is installed on the U-shaped crossbeams 2.

[0031] The top of the battery cluster is fixedly connected with an air conditioning system 8. The top of the battery cluster is the top of the uppermost battery case 1. Since the top of the battery case 1 is open, the top of the battery cluster is open. The air conditioning system 8 shell needs to be sealed and fixedly connected to the top of the battery cluster. The air conditioning system 8 is used to adjust the temperature of the gas inside the battery cluster. The return air port and the air outlet of the air conditioning system 8 are connected to the top opening of the battery cluster. When the air conditioning system 8 is working, the gas inside the battery cluster is drawn into the main unit, and then sent back to the battery cluster after cooling.

[0032] In this embodiment, Figure 2 As shown, a left gas flow space 4 is provided between the left side of the cross beam group and the left side wall of the battery box 1, and a right gas flow space 5 is provided between the right side of the cross beam group and the right side wall of the battery box 1; the left gas flow spaces 4 of the plurality of battery layers 7 are connected, and the right gas flow spaces 5 of the plurality of battery layers 7 are connected. Figure 5 As shown, the return air inlet of the air conditioning system 8 is connected to the right gas flow space 5 of the top battery box 1 in the battery cluster, and the outlet is connected to the left gas flow space 4 of the top battery box 1 in the battery cluster.

[0033] In this embodiment, a left channel and a right channel are opened at the bottom of the battery box 1, and the left gas flow spaces 4 of the multiple battery layers 7 are interconnected through the left channel, and the right gas flow spaces 5 of the multiple battery layers 7 are interconnected through the right channel.

[0034] In this embodiment, the height of the top of the battery module 6 in the battery case 1 is lower than the height of the top of the battery case 1. Thus, a gas flow gap 12 is formed between the top of the battery module 6 and the top of the battery case 1. Figure 5 shown.

[0035] In this embodiment, Figure 5 As shown, a transverse fan 10 is provided at the communication position on the left side between two adjacent battery layers 7 .

[0036] In this embodiment, the battery cluster is filled with flame-retardant gas, and the top of the battery cluster is connected with a flexible member 11 for balancing the volume change of the gas. The internal space of the flexible member 11 is connected to the inner cavity of the battery cluster.

[0037] In this embodiment, a base 9 is fixedly connected to the bottom of the battery cluster, and the base 9 seals the left channel and the right channel at the bottom of the battery cluster, so that the gas inside the battery cluster will not leak.

[0038] The flexible member 11 of this embodiment can be a pressure balance airbag. The air conditioning system 8 and the transverse fan 10 are both connected to a power supply.

[0039] The wind direction in the battery cluster of this embodiment is as follows: Figure 5 As shown by the arrow, when cooling is required, the power switch of the air conditioning system 8 is turned on, so that the air conditioning system 8 is powered on, and the air conditioning system 8 draws the gas inside the battery cluster into its own main unit, and then sends it back to the battery cluster after cooling, so as to achieve cooling of the air inside the battery cluster and effectively cool the battery module 6. The transverse fan 10 is connected to a power supply, and the transverse fan 10 is installed at the left position between two adjacent battery layers 7. When the transverse fan 10 is working, the transverse fan 10 blows the gas on the left side to the right side, and the air flow flows along the gas flow gap 12 to the right gas flow space 5. The return air port of the air conditioning system 8 is connected to the right gas flow space 5 in the battery cluster. After the air flow reaches the right gas flow space 5, it enters the return air port of the air conditioning system 8. After cooling by the air conditioning system 8, the cooled gas is sent back to the left gas flow space 4 in the battery cluster through the air outlet. The use of the transverse fan 10 accelerates the gas flow speed, which can speed up the gas cooling, and the cooling efficiency and effect are better. Since the battery cluster is filled with flame-retardant gas, it can be effectively flame-retardant, and the flexible component 11 can balance the gas volume change. The power supply for connecting the air-conditioning system 8 and the transverse fan 10 of this embodiment can be the battery module 6 in the battery box 1, or an external power supply. The specific connection method is not within the protection scope of this embodiment. Each battery box 1 is provided with a terminal block 3, and the battery module 6 in the battery box 1 can be electrically connected to an external device through the terminal block 3.

[0040] The protection scope of the present invention includes but is not limited to the above embodiments. The protection scope of the present invention shall be based on the claims. Any replacement, deformation, and improvement of the technology that can be easily thought of by technicians in this field shall fall within the protection scope of the present invention.

Claims

1. An internal air-cooled battery packaging structure, characterized in that: Includes battery cluster and air conditioning system; The battery cluster is composed of one battery layer or a plurality of battery layers stacked and connected in sequence from bottom to top; The battery layer includes a battery box with an open top and a battery module, wherein a crossbeam group for carrying the battery module is arranged in the battery box; the battery module is placed on the crossbeam group; and a gas flow space is arranged between the two sides of the crossbeam group and the battery box; The gas flow spaces of the multiple battery layers are interconnected; The top opening of the battery cluster is connected to an air conditioning system, and the air conditioning system is used to adjust the temperature of the gas inside the battery cluster.

2. The internal air-cooled battery packaging structure according to claim 1, characterized in that: A left gas flow space is arranged between the left side of the cross beam group and the left side wall of the battery box, and a right gas flow space is arranged between the right side of the cross beam group and the right side wall of the battery box; the left gas flow spaces of multiple battery layers are connected, and the right gas flow spaces of multiple battery layers are connected.

3. The internal air-cooled battery packaging structure according to claim 2, characterized in that: A left channel and a right channel are provided at the bottom of the battery box. The left gas flow spaces of the plurality of battery layers are interconnected through the left channel, and the right gas flow spaces of the plurality of battery layers are interconnected through the right channel.

4. The internal air-cooled battery packaging structure according to claim 1, characterized in that: The height of the top of the battery module in the battery case is lower than the height of the top of the battery case, thereby forming a gas flow gap between the top of the battery module and the top of the battery case; the gas flow gap is connected to the gas flow space on both sides.

5. The internal air-cooled battery packaging structure according to claim 4, characterized in that: It also includes a transverse fan for blowing the gas in the gas flow space on one side to the gas flow space on the other side through the gas flow gap.

6. The internal air-cooled battery packaging structure according to claim 1, characterized in that: The battery cluster is filled with flame-resistant gas, and a flexible member for balancing volume changes of the gas is connected to the battery cluster.

7. The internal air-cooled battery packaging structure according to claim 1, characterized in that: The beam group includes a plurality of U-shaped beams, which are arranged in sequence from left to right, and a battery module is placed on each U-shaped beam.

8. The internal air-cooled battery packaging structure according to claim 1, characterized in that: The bottom of the battery cluster is fixedly connected with a base.

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