Large cylindrical battery pack cooling assembly with efficient heat dissipation

Abstract

The utility model provides a large cylindrical battery pack cooling assembly with efficient heat dissipation, which comprises a box body and a heat dissipation part arranged in the box body, a liquid outlet is formed in the end part of the heat dissipation part, and a liquid inlet is formed in the middle; and the battery cell is fixed in the heat dissipation component. The heat dissipation component comprises a plurality of cooling plates arranged at intervals, and cooling cavities allowing cooling liquid to circulate are formed in the cooling plates. And the cooling plates are communicated and connected through a plurality of connecting channels. Cooling liquid enters the heat dissipation component from the middle and then flows out from the two ends, it is guaranteed that the cooling liquid is evenly distributed in the heat dissipation component, and therefore it is guaranteed that heat dissipation of the battery pack is even. The cooling cavity and the connecting channel surround the battery to form an annular passage, so that the full contact of the battery cell and the heat dissipation component is ensured, the heat exchange efficiency of the battery cell and the cooling liquid is improved, and the heat dissipation effect of the battery pack is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the field of cylindrical batteries, and in particular relates to a large cylindrical battery pack cooling component with high-efficiency heat dissipation. Background Art

[0002] Cylindrical battery is a battery with high capacity, long cycle life and wide operating temperature range. It is widely used in solar lamps, lawn lamps, backup energy, power tools, toy models and photovoltaic energy. The high safety of cylindrical battery makes it the best carrier for both high energy and super fast charging. Among the current mainstream forms, cylindrical battery is the safest, which is mainly determined by the structural characteristics of its monomer and battery pack. The monomer is the smallest, which effectively disperses the risk; the separate shell protection and independent pressure relief device provide multiple protections; the battery cells are arranged in a honeycomb shape, and the gaps ensure a large enough heat exchange area between the monomer and the outside; more importantly, the central symmetry of the cylindrical battery cell can effectively restrain the expansion of the internal pole piece, so that the shape of the battery cell does not change throughout the life cycle. These enable it to support chemical systems with higher energy density, such as high nickel ternary positive electrode, silicon carbon negative electrode, etc., which are difficult to apply on parallel pole piece structures such as square and soft pack batteries.

[0003] The greater the energy of a battery cell, the more heat it generates when working. Due to the large number of battery cells in the battery pack and the high charging rate, its temperature consistency is difficult to control. There is an urgent need for a cooling component with uniform heat dissipation and high heat dissipation efficiency to improve the heating problem of the battery pack. Utility Model Content

[0004] In view of this, the utility model aims to provide a large cylindrical battery pack cooling assembly with high heat dissipation efficiency to solve the above technical problems.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] A large cylindrical battery pack cooling assembly with high heat dissipation efficiency comprises a box body and a heat dissipation component, wherein the heat dissipation component is arranged inside the box body; a liquid outlet is arranged at the end of the heat dissipation component, and a liquid inlet is arranged in the middle; and a battery cell is fixed in the heat dissipation component.

[0007] Furthermore, the heat dissipation component includes a plurality of cooling plates arranged at intervals, wherein a cooling cavity for circulating a coolant is provided inside the cooling plates; and the cooling plates are connected through a plurality of connecting channels.

[0008] Furthermore, the cooling plate is a wave-shaped structure; the connecting channels are arc-shaped structures symmetrically arranged in groups of two; the connecting channels are connected to the cooling plate, and a plurality of fixed grooves for placing battery cells are formed in the heat dissipation component.

[0009] Furthermore, the liquid inlet is arranged in the middle of the top end surface of the cooling plate, and a cylindrical liquid inlet pipe is fixed on the liquid inlet.

[0010] Furthermore, the cooling plate has plate-like structures extending outward at both ends; liquid outlets are opened on the plate-like structures at both ends of the cooling plates located in the front and rear rows of the heat dissipation components; the cooling cavity in the cooling plate extends to the inside of the plate-like structure and is connected with the liquid outlet.

[0011] Furthermore, a cylindrical liquid outlet pipe is fixedly mounted on the liquid outlet.

[0012] Furthermore, through holes for the liquid outlet pipe to extend out are provided on both sides of the box body.

[0013] Compared with the prior art, the large cylindrical battery pack cooling assembly with high heat dissipation efficiency described in the utility model has the following beneficial effects:

[0014] (1) The utility model provides a large cylindrical battery pack cooling assembly with high heat dissipation efficiency. The coolant enters the heat dissipation component from the middle and then flows out from both ends, ensuring that the coolant is evenly distributed in the heat dissipation component, thereby ensuring uniform heat dissipation of the battery pack.

[0015] (2) The utility model provides a large cylindrical battery pack cooling assembly with high heat dissipation efficiency. The cooling cavity and connecting channels form an annular passage around the battery, ensuring that the battery cells are in full contact with the heat dissipation components, improving the heat exchange efficiency between the battery cells and the coolant, and greatly improving the heat dissipation effect of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is a schematic diagram of the structure of the utility model (the box is not shown);

[0019] Figure 3 It is a structural schematic diagram of the heat dissipation component of the utility model.

[0020] Description of reference numerals:

[0021] 1-box; 2-battery core; 3-heat dissipation component; 31-liquid outlet pipe; 32-liquid inlet pipe; 33-plate structure; 34-cooling plate; 35-connecting channel; 36-fixing groove. DETAILED DESCRIPTION

[0022] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0023] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0025] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0026] The utility model provides a large cylindrical battery pack cooling assembly with high efficiency in heat dissipation, comprising a box body 1 and a heat dissipation component 3, wherein the heat dissipation component 3 is arranged inside the box body 1; a liquid outlet is arranged at the end of the heat dissipation component 3, and a liquid inlet is arranged in the middle; and a battery cell 2 is fixed in the heat dissipation component 3.

[0027] The heat dissipation component 3 includes a plurality of cooling plates 34 arranged at intervals. A cooling cavity for cooling liquid to flow is provided inside the cooling plates 34. The cooling plates 34 are connected to each other via a plurality of connecting channels 35.

[0028] The cooling plate 34 is a wave-shaped structure; the connecting channels 35 are arc-shaped structures symmetrically arranged in groups of two; the connecting channels 35 are connected to the cooling plate 34, and a plurality of fixing grooves 36 for placing the battery cells 2 are formed in the heat dissipation component 3.

[0029] The liquid inlet is arranged at the middle of the top end surface of the cooling plate 34 , and a cylindrical liquid inlet pipe 32 is fixed on the liquid inlet.

[0030] The cooling plate 34 has plate-like structures 33 extending outward at both ends; liquid outlets are provided on the plate-like structures 33 at both ends of the cooling plates 34 in the front and rear rows of the heat dissipation component 3; the cooling cavity in the cooling plate 34 extends to the inside of the plate-like structure 33 and is connected to the liquid outlet.

[0031] A cylindrical liquid outlet pipe 31 is fixedly mounted on the liquid outlet.

[0032] Through holes are provided on both sides of the box body 1 for the liquid outlet pipe 31 to extend out.

[0033] The working principle of the utility model is as follows: the coolant is injected into the heat dissipation component 3 from the liquid inlet in the middle of the cooling plate 34, and is filled in the passage formed by the cooling cavity and the connecting channel 35. The cooling cavity and the connecting passage 35 are connected to form a plurality of annular loops around the battery cells 2. The heat exchange between the coolant and the battery cells 2 realizes the sufficient heat dissipation of the battery pack, and finally the coolant flows out through the liquid outlet at the end of the heat dissipation component 3.

[0034] In the utility model, the coolant enters the heat dissipation component from the middle and then flows out from both ends, ensuring that the coolant is evenly distributed in the heat dissipation component, thereby ensuring uniform heat dissipation of the battery pack.

[0035] In the utility model, the cooling cavity and the connecting channel form an annular passage around the battery, ensuring that the battery cell is in full contact with the heat dissipation component, improving the heat exchange efficiency between the battery cell and the coolant, and greatly improving the heat dissipation effect of the battery pack.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A large cylindrical battery pack cooling assembly with high heat dissipation efficiency, characterized by: It comprises a box body and a heat dissipation component, wherein the heat dissipation component is arranged inside the box body; a liquid outlet is arranged at the end of the heat dissipation component, and a liquid inlet is arranged in the middle; and the battery cell is fixed in the heat dissipation component; The heat dissipation component comprises a plurality of cooling plates arranged at intervals, wherein a cooling cavity for cooling liquid to flow is provided inside the cooling plates; the cooling plates are connected through a plurality of connecting channels; The cooling plate is a wavy structure; the connecting channels are arc structures symmetrically arranged in groups of two; the connecting channels are connected to the cooling plate, and a plurality of fixed grooves for placing battery cells are formed in the heat dissipation component; plate-like structures extending outward are formed at both ends of the cooling plate; liquid outlets are provided on the plate-like structures at both ends of the cooling plates located in the front and rear rows of the heat dissipation component; the cooling cavity in the cooling plate extends to the inside of the plate-like structure and is connected with the liquid outlet.

2. According to claim 1, a large cylindrical battery pack cooling assembly with high heat dissipation efficiency is characterized by: The liquid inlet is arranged at the middle of the top end surface of the cooling plate, and a cylindrical liquid inlet pipe is fixedly mounted on the liquid inlet.

3. According to claim 1, a large cylindrical battery pack cooling assembly with high heat dissipation efficiency is characterized by: A cylindrical liquid outlet pipe is fixedly mounted on the liquid outlet.

4. According to claim 3, a large cylindrical battery pack cooling assembly with high heat dissipation efficiency is characterized in that: Through holes for the liquid outlet pipe to extend out are provided on both sides of the box body.

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