Flexible power battery system with high cooling performance

Abstract

The utility model discloses a flexible power battery system with high cooling performance, which relates to the technical field of batteries, and comprises a box body, a flexible liquid cooling mechanism and battery cell modules, the flexible liquid cooling mechanism is arranged in the box body, the flexible liquid cooling mechanism comprises a flexible liquid cooling belt, the flexible liquid cooling belt is provided with a plurality of accommodating grooves for installing the battery cell modules, and the battery cell modules are arranged in the accommodating grooves. And a liquid inlet and a liquid outlet are formed in the side wall of the flexible liquid cooling belt. According to the utility model, through the arrangement of the flexible liquid cooling belt, the containing grooves are formed, the battery cell modules can be installed, the lower surfaces and the two side faces of the battery cell modules can be cooled, rapid heat dissipation of the battery cells can be realized, the heat dissipation efficiency is improved, and the heat dissipation requirement of the battery cells during rapid charging or discharging can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a flexible power battery system with high cooling performance. Background Art

[0002] New energy vehicles in a broad sense, also known as alternative fuel vehicles, include pure electric vehicles, fuel cell electric vehicles and other vehicles that use all non-petroleum fuels, as well as hybrid electric vehicles, ethanol gasoline vehicles and other vehicles that partially use non-petroleum fuels. All existing new energy vehicles are included in this concept, which is specifically divided into six categories: hybrid vehicles, pure electric vehicles, fuel cell vehicles, alcohol ether fuel vehicles, natural gas vehicles, etc.

[0003] Pure electric new energy vehicles rely primarily on batteries for power. During driving, the battery area inevitably heats up. If this heat persists for a period of time, the battery may develop problems, posing a potential safety hazard. Therefore, existing techniques employ a cooling mechanism installed on the bottom wall of the battery pack, placing the battery cells on the surface of the cooling mechanism, and injecting coolant into the cooling mechanism to dissipate heat from the cells.

[0004] However, the battery pack box in the prior art only has a cooling mechanism at the bottom of the box, which can only dissipate heat on one side of the battery cell, resulting in low heat dissipation efficiency of the battery cell and difficulty in meeting the heat dissipation requirements during rapid charging and discharging. Utility Model Content

[0005] The purpose of the present invention is to provide a flexible power battery system with high cooling performance to solve the above technical problems.

[0006] The technical solutions adopted in this utility model are as follows:

[0007] A flexible high-cooling performance power battery system includes a box, a flexible liquid cooling mechanism and a battery cell module. The flexible liquid cooling mechanism is installed in the box. The flexible liquid cooling mechanism includes a flexible liquid cooling belt. The flexible liquid cooling belt has several accommodating grooves for installing the battery cell module. The side walls of the flexible liquid cooling belt are provided with a liquid inlet and a liquid outlet.

[0008] Preferably, the flexible liquid cooling belt includes a plurality of bending portions, and an accommodating groove is formed on the inner side of each bending portion.

[0009] As a further preference, the longitudinal section of the bent portion is Font settings.

[0010] As a further preference, the flexible liquid cooling belt further includes a connecting portion, and the free ends of two adjacent bending portions are connected by the connecting portion.

[0011] As a further preference, it further comprises foam, and a plurality of the foams are provided on the side wall of the flexible liquid cooling belt.

[0012] Preferably, two ear plates are provided at both ends of the flexible liquid cooling belt, and the ear plates are against the inner wall of the box.

[0013] Preferably, the box body includes a longitudinal beam, a side frame, a front cabin and a rear cabin, the two side frames are installed on both sides of the front cabin and the rear cabin, and the two ends of the side panels are connected to the front cabin and the rear cabin, the front cabin, the rear cabin and the two side frames form a box body frame, the longitudinal beam is arranged in the box body frame and connects the front cabin and the rear cabin, and the longitudinal beam divides the interior of the box body frame into two accommodating cavities.

[0014] As a further preference, two flexible liquid cooling belts are provided and located in the two accommodating cavities.

[0015] As a further preference, it further includes a bottom plate, and the bottom plate is provided at the lower end of the box frame for supporting the flexible liquid cooling belt.

[0016] As a further preference, it further comprises a box cover, and the box cover is provided at the upper end of the box frame.

[0017] The above technical solution has the following advantages or beneficial effects:

[0018] In the utility model, through the setting of the flexible liquid cooling belt, a number of accommodating grooves are provided, in which the battery cell module can be installed, and the lower surface and two side surfaces of the battery cell module can be cooled, which can achieve rapid heat dissipation of the battery cell, improve the heat dissipation efficiency, and meet the heat dissipation requirements of the battery cell during rapid charging or discharging. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is an exploded diagram of the flexible high cooling performance power battery system in the present invention;

[0020] Figure 2 This is a schematic diagram of the assembly of the flexible high cooling performance power battery system in the present invention;

[0021] Figure 3 It is a structural diagram of the box body in the utility model;

[0022] Figure 4 It is an exploded schematic diagram of the box in the present utility model;

[0023] Figure 5 It is a structural diagram of the flexible liquid cooling mechanism in the utility model;

[0024] Figure 6It is a partial schematic diagram of the flexible liquid cooling mechanism in the utility model.

[0025] In the figure: 1. Box body; 101. Longitudinal beam; 102. Side frame; 103. Front cabin; 104. Rear cabin; 105. Bottom plate; 106. Box cover; 107. Extended boss; 108. Convex edge structure; 2. Flexible liquid cooling mechanism; 201. Flexible liquid cooling belt; 202. Liquid inlet; 203. Liquid outlet; 204. Bending portion; 205. Receiving groove; 206. Connecting portion; 207. Foam; 208. Ear plate. DETAILED DESCRIPTION

[0026] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like are used to indicate positions or locations based on those shown in the accompanying drawings. These terms are intended solely to facilitate the description of this utility model and to simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used solely for descriptive purposes and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0029] Figure 1 This is an exploded diagram of the flexible high cooling performance power battery system in the present invention; Figure 2 This is a schematic diagram of the assembly of the flexible high cooling performance power battery system in the present utility model; Figure 3 It is a structural diagram of the box body in the utility model; Figure 4 It is an exploded schematic diagram of the box in the present utility model;

[0030] Figure 5It is a structural diagram of the flexible liquid cooling mechanism in the utility model; Figure 6 It is a partial schematic diagram of the flexible liquid cooling mechanism in the utility model.

[0031] See Figures 1 to 6 As shown, a preferred embodiment is shown, which shows a flexible high cooling performance power battery system, including a box body 1, a flexible liquid cooling mechanism 2 and a battery module. The box body 1 is equipped with a flexible liquid cooling mechanism 2, which includes a flexible liquid cooling belt 201. The flexible liquid cooling belt 201 has a plurality of receiving grooves 205 for installing battery modules. The side wall of the flexible liquid cooling belt 201 is provided with a liquid inlet 202 and a liquid outlet 203. In this embodiment, see Figure 1 As shown, the flexible liquid cooling mechanism 2 is installed inside the box 1, and then the battery is placed in the flexible liquid cooling mechanism 2. Since the flexible liquid cooling mechanism 2 adopts a plurality of bending portions 204, a wave-like structure, and has a plurality of accommodating grooves 205, it can accommodate a plurality of battery cells and can dissipate heat on three sides of the battery cells, thereby improving the heat dissipation efficiency.

[0032] Among them, connecting pipes can be set at the positions opposite to the liquid inlet 202 and the liquid outlet 203, which are used for the cooling liquid to enter or leave the flexible liquid cooling mechanism 2, so as to take away the heat emitted by the battery cell and realize heat dissipation of the battery cell. A through hole for the connecting pipe to pass through is provided on the front compartment 103 of the box body 1.

[0033] The receiving groove 205 in this embodiment can be arranged along the length direction of the box body 1 or along the width direction of the box body 1, and the specific selection can be made according to needs.

[0034] Furthermore, as a preferred embodiment, the flexible liquid cooling belt 201 includes a plurality of bending portions 204, and a receiving groove 205 is formed inside each bending portion 204. Figure 6 As shown, the longitudinal section of each bending portion 204 is The shape of the letter " ' " is provided to form a receiving groove 205, and the battery cell (blade battery cell) is pushed into the receiving groove 205. One battery cell can be installed in each receiving groove 205. The wall of each bending portion 204 is hollow, which is convenient for entering the storage coolant.

[0035] Furthermore, as a preferred embodiment, the flexible liquid-cooling belt 201 further includes a connecting portion 206, through which the free ends of two adjacent bends 204 are connected. The connecting portion 206 is hollow and integrally formed with the bend 204. The inner cavity of the connecting portion 206 is connected to the bend 204, thereby forming a liquid-cooling channel for the passage of coolant. The flexible liquid-cooling belt 201 is flexible and deformable, facilitating bending of the flexible liquid-cooling belt 201 to form the bend 204. The specific shape of the bend 204 can be selected as needed.

[0036] Furthermore, as a preferred embodiment, it further includes foam 207, and a plurality of foams 207 are provided on the side wall of the flexible liquid cooling belt 201. Figure 6 As shown, the foam 207 is arranged on the upper and lower side walls of the flexible liquid cooling belt 201 and can bend along with the flexible liquid cooling belt 201. The foam 207 located on the upper side wall of the flexible liquid cooling belt 201 can contact the side of the battery cell to support the battery cell. When the battery cell expands, the foam 207 can deform along with the battery cell to provide constant support for the battery cell. The foam 207 on the lower side wall of the flexible liquid cooling belt 201 can contact the inner wall of the box body 1, for example, the longitudinal beam 101, side frame 102, front compartment 103, rear compartment 104, bottom plate 105, and box cover 106 of the box body 1. The foam 207 located on the upper side wall of the flexible liquid cooling belt 201 can contact the box cover 106, thereby increasing the rigidity of the box cover 106.

[0037] Furthermore, as a preferred embodiment, two ear plates 208 are provided at both ends of the flexible liquid cooling belt 201, and the ear plates 208 abut against the inner wall of the box body 1. In this embodiment, the ear plates 208 at both ends of the flexible liquid cooling belt 201 can abut against the front compartment 103 and the rear compartment 104 in the box body 1.

[0038] Furthermore, as a preferred embodiment, the box body 1 includes a longitudinal beam 101, a side frame 102, a front compartment 103, and a rear compartment 104. The side frames 102 are installed on both sides of the front compartment 103 and the rear compartment 104, and the ends of the side panels are connected to the front compartment 103 and the rear compartment 104. The front compartment 103, the rear compartment 104, and the side frames 102 form the box body 1 frame. The longitudinal beam 101 is arranged within the box body 1 frame and connects the front compartment 103 and the rear compartment 104. The longitudinal beam 101 divides the interior of the box body 1 frame into two accommodating chambers. In this embodiment, the lower end of the box body 1 frame is provided with a bottom plate 105 for supporting the flexible liquid cooling belt 201, and the upper end of the box body 1 frame is provided with a box cover 106 for sealing the box body 1. The bottom plate 105 is connected to the longitudinal beam 101 , the side frame 102 and the rear compartment 104 by bolts or screws, while the front compartment 103 is connected to the bottom plate 105 and the side frames 102 on both sides and the longitudinal beam 101 by bolts.

[0039] During use, the longitudinal beam 101, the side frame 102, and the rear compartment 104 can be welded and fixed first, and then the bottom plate 105 can be installed. After the installation is completed, the flexible liquid cooling belt 201 can be installed and installed in the receiving cavity. Then, the flexible liquid cooling belt 201 is fixed near one end of the rear compartment 104. Then, the battery cells are installed one by one in the receiving groove 205, wherein the two sides of the battery cells are fixed to the side frames 102 and the longitudinal beam 101 by gluing, and the battery cells are also fixed to the flexible liquid cooling belt 201 by gluing. After several battery cells are installed, the front compartment 104 is installed. After the installation is completed, the box cover 106 is bolted to the upper ends of the longitudinal beam 101, the side frame 102, the front compartment 103, and the rear compartment 104 to achieve sealing of the box body 1.

[0040] The side frame 102 and the longitudinal beam 101 are close to each other, and an extension boss 107 is provided for carrying the battery cell across. The outer wall of the side frame 102 is provided with a flange structure 108, which is provided with bolt holes for bolting the box body 1 to the frame.

[0041] See also Figure 5 As shown, two flexible liquid cooling belts 201 are provided and located in two accommodating cavities. The two flexible liquid cooling belts 201 are independently provided, and each flexible liquid cooling belt 201 has a liquid inlet 202 and a liquid outlet 203 .

[0042] The above description is only a preferred embodiment of the present invention and does not limit the implementation method and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A flexible high cooling performance power battery system, characterized in that: The flexible liquid cooling device comprises a box body, a flexible liquid cooling mechanism and a battery module. The flexible liquid cooling mechanism is installed in the box body. The flexible liquid cooling mechanism comprises a flexible liquid cooling belt. The flexible liquid cooling belt has a plurality of receiving grooves for installing the battery module. The side wall of the flexible liquid cooling belt is provided with a liquid inlet and a liquid outlet. The flexible liquid cooling belt comprises a plurality of bending portions. An accommodating groove is formed on the inner side of each bending portion. The longitudinal section of the bending portion is The flexible liquid cooling belt is arranged in a Chinese-style, and further comprises a connecting portion, through which the free ends of two adjacent bending portions are connected.

2. The flexible high cooling performance power battery system according to claim 1, characterized in that: It also includes foam, and a plurality of the foams are provided on the side walls of the flexible liquid cooling belt.

3. The flexible high cooling performance power battery system according to claim 1, characterized in that: Two ear plates are provided at both ends of the flexible liquid cooling belt, and the ear plates are against the inner wall of the box body.

4. The flexible high cooling performance power battery system according to claim 1, characterized in that: The box body includes a longitudinal beam, a side frame, a front cabin and a rear cabin. The two side frames are installed on both sides of the front cabin and the rear cabin, and the two ends of the side frames are connected to the front cabin and the rear cabin. The front cabin, the rear cabin and the two side frames form a box body frame. The longitudinal beam is arranged in the box body frame and connects the front cabin and the rear cabin. The longitudinal beam divides the interior of the box body frame into two accommodating cavities.

5. The flexible high cooling performance power battery system according to claim 4, characterized in that: Two flexible liquid cooling belts are provided and are located in the two accommodating cavities.

6. The flexible high cooling performance power battery system according to claim 5, characterized in that: It also includes a bottom plate, which is provided at the lower end of the box frame and is used to support the flexible liquid cooling belt.

7. The flexible high cooling performance power battery system according to claim 4, characterized in that: It also includes a box cover, which is provided at the upper end of the box frame.

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