A bottom-intake air-cooled battery pack structure

Abstract

This invention provides a bottom-intake air-cooled battery pack structure, belonging to the technical field of cell module heat dissipation. The bottom-intake air-cooled battery pack structure includes a housing, cell modules, an air inlet, and an air outlet. The cell modules are arranged in multiple rows within the housing. The air inlets are located at the bottom of the housing and are used for air intake within the housing. The air outlet is located on the front side of the housing. The top of the housing is divided into confluence spaces connecting the various cell modules, and the air outlet connects to these confluence spaces at the top of the housing for exhaust. This invention solves the problem of uniform air intake temperature for multi-row cell modules, provides good air cooling performance, and is not limited by the number of cell modules.

Description

Technical Field

[0001] This utility model belongs to the technical field of heat dissipation of battery cell modules, and more specifically, it relates to a bottom-intake air-cooled battery pack structure. Background Technology

[0002] An air-cooled battery pack is a type of battery pack that uses air cooling technology for heat dissipation. Compared to liquid cooling systems, it is less expensive, simpler in structure, and easier to maintain. In an air-cooled system, a fan operates, causing air to flow through ventilation ducts across the battery modules. The flowing air exchanges heat with the battery modules, carrying away the heat generated by the batteries and thus maintaining the battery temperature within a suitable operating range.

[0003] A Chinese patent with publication number CN220821687U is available for reference. It discloses an air-cooled battery pack air duct structure, including a housing, an end plate structure, a cell sandwich air duct plate, and battery cells. Several battery cells are arranged side by side in the housing, and a cell sandwich air duct plate is provided between adjacent battery cells to form a battery cell assembly. Two battery cell assemblies are arranged side by side with a channel in the middle. Each battery cell assembly has an end plate structure at both ends, and a battery cell sandwich air duct plate is provided between the end plate structure and the battery cell assembly. Air inlets are provided on both sides of the housing, and air outlets are provided at the ends of the housing.

[0004] The aforementioned patent uses a method of air intake on both sides of the box and air exhaust on the front, which is only applicable to situations where there are only two rows of cell modules in the battery pack. When there are multiple rows of cell modules in the battery pack, it cannot effectively dissipate heat from the inner cell modules. Utility Model Content

[0005] The purpose of this invention is to provide a bottom-intake air-cooled battery pack structure to solve the technical problem in the prior art where, when there are multiple rows of battery cell modules inside the battery pack, it is impossible to effectively dissipate heat from the inner battery cell modules.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a bottom-intake air-cooled battery pack structure, including a shell, and further comprising:

[0007] The battery cell module is disposed within the housing and has multiple rows;

[0008] An air inlet, disposed at the bottom of the housing and having multiple rows, is used for air intake within the housing; and

[0009] An air outlet is provided on the front side of the housing. The top of the housing is divided into a confluence space that connects to each of the battery cell modules. The air outlet is connected to the confluence space at the top of the housing and is used for ventilation.

[0010] In conjunction with the above technical solutions, in one possible implementation, the bottom-intake air-cooled battery pack structure further includes:

[0011] Cell spacers are disposed within the cell module and located between adjacent cells; and

[0012] A flow guiding component is disposed on the cell spacer plate, and the flow guiding component is used to guide the airflow below to the sides and top of the cell module.

[0013] In one possible implementation, based on the above technical solutions, the flow guiding component includes:

[0014] The first guide plate is disposed on both sides of the bottom surface of the cell spacer plate; and

[0015] The second guide plate is disposed on both sides of the surface of the cell spacer and located above the first guide plate, with a gap between the first guide plate and the second guide plate on the same side.

[0016] In one possible implementation, in conjunction with the above technical solutions, the current guiding assembly further includes a current splitter plate, which is vertically disposed at the center of the surface of the cell spacer plate, and there is a gap between the current splitter plate and the two second current guiding plates.

[0017] In one possible implementation, based on the above technical solutions, the bottom of the diverter plate is a guide surface that slopes towards both sides.

[0018] In one possible implementation, based on the above technical solutions, the cell spacer and the current-conducting assembly are insulated from each other.

[0019] In one possible implementation, based on the above technical solutions, the number of rows of the air inlet is consistent with and directly opposite the number of rows of the battery cell module.

[0020] In one possible implementation, based on the above technical solutions, the air outlet has two parts that are symmetrically arranged on the front side of the housing.

[0021] The beneficial effects of the bottom-inlet air-cooled battery pack structure provided by this utility model are as follows: Compared with the prior art, this utility model draws air through the air outlet, and multiple rows of air inlets at the bottom of the shell draw air in simultaneously. After passing through each cell module, the airflow converges into the confluence space at the top of the shell and is drawn out by the air outlet. This can solve the problem of uniform airflow temperature of multiple rows of cell modules, and the air-cooling heat dissipation effect is good and not limited by the number of cell modules. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A schematic diagram of a bottom-inlet air-cooled battery pack structure provided for an embodiment of this utility model;

[0024] Figure 2 This is a schematic diagram of the air inlet provided in an embodiment of the present utility model;

[0025] Figure 3 A schematic diagram of the structure of the cell spacer and current guiding assembly provided in the embodiment of this utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the battery cell module provided in an embodiment of the present utility model;

[0027] Figure 5 This is a schematic diagram of the flow guiding component provided in an embodiment of the present utility model.

[0028] The labels for the attached figures are as follows:

[0029] 1. Housing; 2. Battery cell module; 3. Air inlet; 4. Air outlet; 5. Battery cell spacer; 6. Flow guide assembly; 61. First flow guide plate; 62. Second flow guide plate; 63. Diverter plate. Detailed Implementation

[0030] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the described embodiments are only a part of the embodiments of this application, not all of them. The specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, and the spatial relative descriptions used herein will be interpreted accordingly.

[0032] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0033] The present invention will now describe a bottom-inlet air-cooled battery pack structure.

[0034] like Figures 1 to 3 As shown, one embodiment of this utility model provides a bottom-intake air-cooled battery pack structure, including a housing 1, a cell module 2, an air inlet 3, and an air outlet 4; the cell module 2 is disposed inside the housing 1 and has multiple rows; the air inlet 3 is disposed at the bottom of the housing 1 and has multiple rows, and the air inlet 3 is used for air intake inside the housing 1; the air outlet 4 is disposed on the front side of the housing 1, and the top of the housing 1 is divided into a confluence space connecting the various cell modules 2, and the air outlet 4 is connected to the confluence space at the top of the housing 1 and is used for exhaust.

[0035] Specifically, in this embodiment, the air inlet 3 is a through hole opened at the bottom of the housing 1, and the air outlet 4 is a fan installed on the front side of the housing 1.

[0036] This embodiment provides a bottom-intake air-cooled battery pack structure. Compared with the prior art, it draws air through the air outlet 4. Multiple rows of air inlets 3 at the bottom of the housing 1 simultaneously draw in air. After passing through each cell module 2, the airflow converges into the confluence space at the top of the housing 1 and is drawn out by the air outlet 4. This can solve the problem of uniform airflow temperature of multiple rows of cell modules 2. The air-cooling effect is good and is not limited by the number of cell modules 2.

[0037] like Figures 3 to 4 As shown, based on the above embodiments, this utility model provides another specific embodiment as follows:

[0038] The bottom-intake air-cooled battery pack structure also includes a cell separator 5 and a flow guiding component 6; the cell separator 5 is disposed in the cell module 2 and located between adjacent cells; the flow guiding component 6 is disposed on the cell separator 5 and is used to guide the airflow from below to the sides and top of the cell module 2.

[0039] The airflow entering the housing 1 through the air inlet 3 passes through the cell spacers 5 in the cell module 2, and is further diverted to the sides and top by the airflow guide assembly 6, thereby improving the overall heat dissipation effect of the cell module 2.

[0040] like Figure 5 As shown, based on the above embodiments, this utility model provides another specific embodiment as follows:

[0041] The flow guiding assembly 6 includes a first flow guiding plate 61 and a second flow guiding plate 62; the first flow guiding plate 61 is disposed on both sides of the bottom surface of the cell spacer 5; the second flow guiding plate 62 is disposed on both sides of the surface of the cell spacer 5 and located above the first flow guiding plate 61, and there is a gap between the first flow guiding plate 61 and the second flow guiding plate 62 on the same side.

[0042] The flow guiding assembly 6 also includes a flow divider plate 63, which is vertically disposed in the middle of the surface of the cell spacer plate 5, and there is a gap between the flow divider plate 63 and the two second flow guiding plates 62.

[0043] After the airflow enters the cell module 2 from below, it is diverted by the diverter plate 63 at the cell spacer plate 5. Part of the airflow on both sides of the diverter plate 63 is guided by the first guide plate 61 and the second guide plate 62 and flows out to both sides from the space between them, while the other part continues to flow upward, which improves the heat dissipation effect of the diverter on the cell module 2.

[0044] like Figures 1 to 3 As shown, based on the above embodiments, this utility model provides another specific embodiment as follows:

[0045] The bottom of the splitter plate 63 is a guide surface that slopes to both sides, which can reduce the resistance to airflow.

[0046] like Figure 3 As shown, based on the above embodiments, this utility model provides another specific embodiment as follows:

[0047] The cell spacer 5 and the current guiding assembly 6 are made of insulating and flame-retardant materials, which can improve the safety of the cell module 2.

[0048] like Figures 2 to 3 As shown, based on the above embodiments, this utility model provides another specific embodiment as follows:

[0049] The number of rows in the air intake 3 is the same as the number of rows in the battery cell module 2 and they are directly opposite each other, which allows the airflow to enter the corresponding battery cell module 2 more directly, further improving the heat dissipation effect of the battery cell module 2.

[0050] like Figure 1 As shown, based on the above embodiments, this utility model provides another specific embodiment as follows:

[0051] The air outlet 4 has two outlets symmetrically arranged on the front side of the housing 1, which further improves the airflow speed and facilitates the adjustment of wind speed and wind pressure.

[0052] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A bottom-intake air-cooled battery pack structure, comprising a housing (1), characterized in that, Also includes: The battery cell module (2) is disposed inside the housing (1) and has multiple rows; An air inlet (3) is provided at the bottom of the housing (1) and has multiple rows, the air inlet (3) being used for air intake inside the housing (1); as well as An air outlet (4) is provided on the front side of the housing (1). The top of the housing (1) is divided into a confluence space that connects to each of the battery cell modules (2). The air outlet (4) is connected to the confluence space at the top of the housing (1) and is used for ventilation.

2. The bottom-intake air-cooled battery pack structure as described in claim 1, characterized in that, Also includes: A cell spacer (5) is disposed within the cell module (2) and located between adjacent cells; as well as A flow guiding component (6) is disposed on the cell spacer plate (5). The flow guiding component (6) is used to guide the airflow below to the sides and top of the cell module (2).

3. The bottom-intake air-cooled battery pack structure as described in claim 2, characterized in that, The flow guiding component (6) includes: The first guide plate (61) is disposed on both sides of the bottom surface of the cell spacer (5); and The second guide plate (62) is disposed on both sides of the surface of the cell spacer (5) and located above the first guide plate (61). There is a gap between the first guide plate (61) and the second guide plate (62) on the same side.

4. The bottom-intake air-cooled battery pack structure as described in claim 3, characterized in that, The flow guiding assembly (6) further includes a flow divider plate (63), which is vertically disposed at the middle position of the surface of the cell spacer plate (5), and there is a gap between the flow divider plate (63) and the two second flow guiding plates (62).

5. The bottom-intake air-cooled battery pack structure as described in claim 4, characterized in that, The bottom of the diverter plate (63) is a guide surface that slopes towards both sides.

6. The bottom-intake air-cooled battery pack structure as described in claim 2, characterized in that, The cell spacer (5) and the current guiding assembly (6) are insulated from each other.

7. The bottom-intake air-cooled battery pack structure as described in any one of claims 1-6, characterized in that, The number of rows of the air inlet (3) is the same as the number of rows of the battery cell module (2) and they are directly opposite each other.

8. The bottom-intake air-cooled battery pack structure as described in any one of claims 1-6, characterized in that, The air outlet (4) has two parts and is symmetrically arranged on the front side of the housing (1).

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