Air duct structure of battery module and battery module

Abstract

The utility model discloses an air duct structure of battery module and battery module, the air duct structure of battery module comprises a plurality of battery cells that are arranged in parallel, a heat dissipation partition plate is arranged between adjacent battery cells, the front end face and the rear end face of the heat dissipation partition plate respectively abut against the adjacent battery cells, the heat dissipation partition plate is internally provided with a heat dissipation air duct, and the heat dissipation air duct is communicated with the heat dissipation partition plate. A plurality of first windows are formed in the front end face of the heat dissipation partition plate, a plurality of second windows are formed in the rear end face of the heat dissipation partition plate, the first windows and the second windows are respectively communicated with the heat dissipation air channel, the first windows and the second windows are distributed in a staggered manner, and the first windows and the second windows are respectively communicated with adjacent battery cells. According to the utility model, part of the end faces of the battery cells are directly communicated with the heat dissipation air duct, so that heat can be directly dissipated into the heat dissipation air duct, the heat dissipation efficiency is improved, and the working safety is guaranteed. In addition, the material heat conductivity coefficient of the heat dissipation partition plate does not need to be depended, so that the manufacturing cost of the battery module is better controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage systems, and in particular to an air duct structure of a battery module and a battery module. Background Art

[0002] The battery energy storage system is an energy storage system composed of storage batteries and parallel voltage-type converters. There are multiple battery modules in the battery energy storage system, and each battery module consists of multiple battery cells connected in series. The battery cells will inevitably generate heat during the charging and discharging process, so the existing battery modules are basically provided with a heat dissipation structure to ensure the safety of the battery cells. In the currently common battery modules, a heat dissipation partition is provided between the two battery cells, and a plurality of transverse heat dissipation ducts are provided in the heat dissipation partition. A heat dissipation fan is installed on the battery module, and the two end faces of the heat dissipation partition are respectively in contact with the two battery cells. During operation, the heat generated by the battery cells will directly exchange heat with the heat dissipation partition, and the heat on the heat dissipation partition will be conducted into the heat dissipation duct; and the operation of the heat dissipation fan allows the external cold air to flow into the heat dissipation duct, taking away the hot air, thereby achieving the purpose of heat dissipation of the battery cells. The above-mentioned prior art still has at least the following problems:

[0003] The contact surfaces between the battery cells and the heat dissipation baffles are both solid metal surfaces. During operation, the heat generated by the battery cells first enters the metal material of the heat dissipation baffle through heat conduction. Only when the heat is conducted to the heat dissipation air duct can it be carried away by the cold air, so the heat dissipation efficiency is relatively low. In addition, this heat dissipation structure is more dependent on the thermal conductivity of the heat dissipation baffle material itself. If the thermal conductivity is low, the heat dissipation effect will be extremely poor. If materials with very high thermal conductivity are used, the procurement cost may be relatively high. Utility Model Content

[0004] In order to solve some or all of the problems existing in the above-mentioned prior art, on the one hand, the utility model provides an air duct structure of a battery module, comprising a plurality of battery cells arranged in parallel, a heat dissipation partition is arranged between adjacent battery cells, the front and rear end faces of the heat dissipation partition are respectively abutted against adjacent battery cells, a heat dissipation air duct is provided in the heat dissipation partition, a plurality of first windows are provided on the front end face of the heat dissipation partition, a plurality of second windows are provided on the rear end face of the heat dissipation partition, the first windows and the second windows are respectively connected with the heat dissipation air duct, the first window and the second window are staggered, and the first window and the second window are respectively connected with adjacent battery cells.

[0005] As a further improvement of the present invention, a plurality of air duct reinforcement ribs are provided in the heat dissipation air duct, and the air duct reinforcement ribs are connected to the heat dissipation baffle.

[0006] As a further improvement of the present invention, the heat dissipation duct is distributed laterally along the heat dissipation baffle.

[0007] As a further improvement of the present invention, longitudinal support blocks are provided on the heat dissipation baffle, and the longitudinal support blocks are distributed on the left and right sides of the first window and the second window, and the front and rear end surfaces of the longitudinal support blocks are respectively in contact with adjacent battery cells.

[0008] As a further improvement of the present invention, the first window and the second window are identical in size and shape.

[0009] As a further improvement of the present invention, the heat dissipation baffle is made of hard metal material.

[0010] On the other hand, the utility model also provides a battery module including the above-mentioned air duct structure, which also includes a shell, the battery cell is connected to the shell, the shell is provided with an air inlet and an air outlet, and a cooling fan is provided at a position corresponding to the air outlet in the shell, and the cooling fan is used to blow air toward the air outlet.

[0011] As a further improvement of the present invention, an air inlet dust cover is provided on the air inlet, and the air inlet dust cover is connected to the shell.

[0012] As a further improvement of the present invention, a locking steel belt is sleeved on the periphery of the battery core.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] By providing a first window and a second window, the present invention allows for direct connection of portions of the end faces of the battery cell with the heat dissipation duct. This allows heat generated by the battery cell to be dissipated directly into the heat dissipation duct, eliminating the need for heat conduction through a heat dissipation baffle. This effectively improves heat dissipation efficiency and ensures operational safety. Furthermore, the direct connection between the battery cell and the heat dissipation duct eliminates the need for reliance on the thermal conductivity of the heat dissipation baffle material, allowing for the use of more cost-effective materials, thereby further reducing the production cost of the battery module. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is a schematic diagram of the external structure of an embodiment of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of an embodiment of the utility model;

[0018] Figure 3This is a schematic diagram of the three-dimensional structure of the heat dissipation baffle in an embodiment of the present utility model;

[0019] Figure 4 This is a front view structural diagram of a heat dissipation baffle in an embodiment of the present utility model;

[0020] Figure 5 yes Figure 4 Schematic diagram of the AA cross-section structure. DETAILED DESCRIPTION

[0021] Unless otherwise defined, all technical and scientific terms used in this utility model have the same meanings as commonly understood by those skilled in the art to which this utility model belongs. The terms used in the specification are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The terms "including" and "having" and any variations thereof in the specification and claims of this utility model and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first" and "second" in the specification and claims of this utility model or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0022] References to "embodiments" in this disclosure mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the disclosure. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it necessarily refer to mutually exclusive, independent, or alternative embodiments to other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described in this disclosure may be combined with other embodiments.

[0023] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0024] like Figure 1-5As shown, a battery module includes a shell 1, in which a plurality of battery cells 2 arranged in parallel are arranged. Two locking steel bands 3 are sleeved on the outer periphery of the battery cells 2. The locking steel bands 3 fix all the battery cells 2 into a whole, thereby improving the stability of the structure. A heat dissipation baffle 4 is provided between each adjacent battery cell 2. The front and rear end surfaces of the heat dissipation baffle 4 are respectively in contact with the adjacent battery cells 2. A heat dissipation duct 41 is provided in the heat dissipation baffle 4. An air inlet 11 and an air outlet 12 are provided on the shell 1. A heat dissipation fan 5 is installed at a position corresponding to the air outlet 12 in the shell 1. The heat dissipation fan 5 is used to blow air in the direction of the air outlet 12. During operation, the heat generated by the charging and discharging of the battery cell 2 will be conducted to the heat dissipation duct 41 through the heat dissipation partition 4. The heat dissipation fan 5 will work to make the air inside the shell 1 flow out toward the air outlet 12, and the external cold air will flow into the shell 1 through the air inlet 11, and then flow into the heat dissipation duct 41 to take away the heat, and then flow out from the air outlet 12, realizing air flow circulation and dissipating heat to the battery cell 2.

[0025] In order to reduce dust from entering the housing 1, an air inlet dust cover 6 is provided on the air inlet 11, and the air inlet dust cover 6 is connected to the housing 1. The air inlet dust cover 6 can reduce dust from entering the housing 1, thereby improving the working stability of the battery module and extending the service life.

[0026] To improve heat dissipation efficiency, in this embodiment, a plurality of first windows 42 are provided on the front face of the heat dissipation baffle 4, and a plurality of second windows 43 are provided on the rear face of the heat dissipation baffle 4. The first windows 42 and the second windows 43 are respectively connected to the heat dissipation duct 41. The first windows 42 and the second windows 43 are staggered and respectively connected to adjacent battery cells 2. By providing the first windows 42 and the second windows 43, part of the end face of the battery cell 2 is directly connected to the heat dissipation duct 41, so that the heat generated by the battery cell 2 can be directly dissipated into the heat dissipation duct 41 without the need for heat conduction through the heat dissipation baffle 4, which can effectively improve heat dissipation efficiency and ensure work safety. In addition, the battery cell 2 is directly connected to the heat dissipation duct 41, and there is no need to rely on the thermal conductivity of the material of the heat dissipation baffle 4. More cost-effective materials can be selected to make the heat dissipation baffle 4, thereby better controlling the production cost of the battery module.

[0027] To ensure the structural rigidity of the heat dissipation baffle 4, a plurality of air duct reinforcement ribs 44 are provided within the heat dissipation duct 41. The air duct reinforcement ribs 44 are respectively connected to the two end surfaces of the heat dissipation baffle 4. The provision of the air duct reinforcement ribs 44 improves the overall structural rigidity of the heat dissipation baffle 4, preventing the battery cells 2 from compressing and deforming the heat dissipation baffle 4 when the locking steel belt 3 is tightened, thereby improving the structural stability.

[0028] The battery module separates the first window 42 and the second window 43 by the air duct reinforcement rib 44, so that there is always a part of the end face of the heat dissipation baffle 4 that is made of material, thereby improving the overall structural rigidity of the heat dissipation baffle 4; in this embodiment, the first window 42 and the second window 43 are the same in size and shape, which makes it convenient for operators to assemble the battery module and can be installed without checking the front and back sides of the heat dissipation baffle 4, thereby improving the convenience of assembly.

[0029] In this embodiment, the heat dissipation baffle 4 is made of hard metal material to ensure the overall structural rigidity of the heat dissipation baffle 4; in other embodiments, the heat dissipation baffle 4 can also be made of other materials with sufficient rigidity, which is not limited by the present invention.

[0030] In this embodiment, the heat dissipation duct 41 is distributed laterally along the heat dissipation partition 4. The laterally distributed heat dissipation duct 41 can be directly connected to the air inlet 11, so that the cold air entering the air inlet 11 can directly flow into the heat dissipation duct 41, thereby improving the heat dissipation efficiency.

[0031] To further enhance the structural rigidity of the heat dissipation baffle 4, longitudinal support blocks 45 are provided on the heat dissipation baffle 4. These longitudinal support blocks 45 are located to the left and right of the first window 42 and the second window 43, with the front and rear ends of the longitudinal support blocks 45 respectively contacting the adjacent battery cells 2. In this embodiment, the longitudinal support blocks 45 are also part of the heat dissipation baffle 4. During the manufacturing process of the heat dissipation baffle 4, when tools are used to open the first window 42 and the second window 43, longitudinal support blocks 45 are reserved on either side of the heat dissipation baffle 4, ensuring that neither the first window 42 nor the second window 43 extends horizontally through the heat dissipation baffle 4. Retaining the longitudinal support blocks 45 enhances the structural rigidity of the heat dissipation baffle 4, reduces the possibility of deformation of the heat dissipation baffle 4 by the battery cells 2, and improves structural stability.

[0032] The above-mentioned specific implementation manner is a preferred implementation manner of the present utility model, and is not intended to limit the specific implementation scope of the present utility model. The scope of the present utility model includes but is not limited to the specific implementation manner. All equivalent changes made in accordance with the present utility model are within the protection scope of the present utility model.

Claims

1. A battery module air duct structure, characterized by: It includes multiple battery cells arranged in parallel, and a heat dissipation partition is provided between adjacent battery cells. The front and rear end surfaces of the heat dissipation partition are respectively in contact with the adjacent battery cells. A heat dissipation duct is provided in the heat dissipation partition. A plurality of first windows are provided on the front end surface of the heat dissipation partition, and a plurality of second windows are provided on the rear end surface of the heat dissipation partition. The first windows and the second windows are respectively connected to the heat dissipation duct, the first window and the second window are staggered, and the first window and the second window are respectively connected to the adjacent battery cells.

2. The air duct structure of the battery module according to claim 1, characterized in that: A plurality of air duct reinforcement ribs are provided in the heat dissipation air duct, and the air duct reinforcement ribs are connected to the heat dissipation baffle.

3. The air duct structure of the battery module according to claim 2, characterized in that: The heat dissipation duct is distributed laterally along the heat dissipation baffle.

4. The air duct structure of the battery module according to claim 2, characterized in that: The heat dissipation baffle is provided with longitudinal support blocks, which are distributed on the left and right sides of the first window and the second window. The front and rear end surfaces of the longitudinal support blocks are respectively in contact with adjacent battery cells.

5. The air duct structure of the battery module according to claim 1, characterized in that: The first window and the second window are identical in size and shape.

6. The air duct structure of the battery module according to claim 1, characterized in that: The heat dissipation baffle is made of hard metal material.

7. A battery module comprising the air duct structure according to any one of claims 1 to 6, characterized in that: It also includes a shell, the battery core is connected to the shell, the shell is provided with an air inlet and an air outlet, a cooling fan is provided at a position corresponding to the air outlet in the shell, and the cooling fan is used to blow air toward the air outlet.

8. The battery module according to claim 7, wherein: An air inlet dust cover is provided on the air inlet, and the air inlet dust cover is connected to the shell.

9. The battery module according to claim 7, wherein: The periphery of the battery core is sleeved with a locking steel belt.

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