Liquid cooling assembly

Abstract

The utility model discloses a liquid cooling assembly which comprises a liquid cooling plate body used for cooling a battery module, and the liquid cooling plate body is fixed in a battery box body through a plurality of self-plugging rivets; the liquid cooling plate body is fixedly mounted in the battery box body through the self-plugging rivets so as to cool the battery module in the battery box body, and the liquid cooling plate is mounted through the self-plugging rivets, so that the deformation degree of the liquid cooling plate caused by mounting is reduced, and the flatness of the liquid cooling plate is controlled.

Description

Technical Field

[0001] This utility model relates to battery liquid cooling, and more particularly to a coolant assembly. Background Technology

[0002] Currently, the brackets for fixing liquid cooling plates inside the battery box generally use piercing welding or friction stir welding.

[0003] (1) Using puncture welding results in large deformation of the cold plate, which affects the cooling efficiency of the battery. The thickness of the profile at the puncture welding position needs to be more than 6mm, which increases the weight of the profile. Puncture welding requires repair welding, which poses a risk of leakage.

[0004] (2) When using friction stir joint, the cold plate deforms significantly due to heat and compression, making it impossible to control the flatness of the liquid cooling plate.

[0005] Based on the above problems, a novel liquid cooling plate is proposed. Summary of the Invention

[0006] To address the technical problems existing in the background art, this utility model proposes a liquid cooling component.

[0007] Includes a liquid cooling plate body for cooling the battery module, the liquid cooling plate body being fixed to the battery box by a plurality of blind rivets;

[0008] The liquid cooling plate body includes an upper plate and a lower plate that are fixedly connected, and the upper plate and the lower plate enclose a cold liquid flow channel for the introduction of coolant;

[0009] The core-pulling rivets avoid the liquid cooling channels distributed on the upper edge and middle of the liquid cooling plate body (1);

[0010] The coolant flow channel includes a first coolant zone and a second coolant zone that are connected in sequence along a first direction. The first direction is the direction from the inlet to the outlet of the coolant flow channel. The coolant flows through the battery module along the first direction for a gradually increasing time to cool the battery module evenly.

[0011] The first coolant zone is formed by multiple sets of transverse and vertical flow channels connected to form an arc shape, and the length of the vertical flow channel gradually decreases along the first direction to increase the number of coolant circulation flows.

[0012] The second coolant zone is composed of multiple sets of vertical and horizontal flow channels arranged longitudinally and connected together. The length of the horizontal flow channels gradually decreases along the first direction to increase the number of coolant circulation flows.

[0013] The battery box is also equipped with a bracket, which is frame-shaped and has support beams for supporting the liquid cooling plate body arranged in an alternating manner inside. On the opposite outer wall of the bracket, inlet and outlet nozzles connected to the coolant flow channel are respectively installed.

[0014] The liquid cooling plate body has multiple first fixing holes, and the support beam has a second fixing hole. The first fixing holes and the second fixing holes are correspondingly arranged. The core-pulling rivet passes through the first fixing holes and the second fixing holes to fix the liquid cooling plate body on the bracket.

[0015] The coolant flow channel is symmetrically arranged along the central axis of the liquid cooling plate body, with inlets on both symmetrical sides, and an outlet on the side of the liquid cooling plate away from the inlets. The coolant can enter the coolant flow channel through the two inlets and flow out through the outlet.

[0016] The top of the outer wall of the bracket is provided with a first fixing member, which is used to abut and fix with the outer wall of the battery box. The outer wall of the bracket is also provided with a second fixing member and a third fixing member for support.

[0017] In this invention, the liquid cooling plate body can be fixedly installed inside the battery box using a core-pulling rivet to cool the battery module inside the battery box. The installation of the liquid cooling plate using the core-pulling rivet also reduces the degree of deformation caused by the installation, thereby controlling the flatness of the liquid cooling plate. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the support structure of this utility model.

[0020] Figure 3 This is a schematic diagram of the liquid cooling plate structure in the utility model. Detailed Implementation

[0021] The embodiments of this utility model are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0022] like Figures 1-3 The coolant assembly shown includes a liquid cooling plate body 1 for cooling a battery module. The liquid cooling plate body 1 is fixed to the battery box by a plurality of blind rivets 5. The blind rivets 5 are spaced apart at the edges and center of the liquid cooling plate body 1.

[0023] The liquid cooling plate body 1 is fixedly installed inside the battery box by the blind rivet 5 to cool the battery module inside the battery box. The installation of the liquid cooling plate by the blind rivet 5 reduces the degree of deformation caused by the installation and controls the flatness of the liquid cooling plate. Furthermore, the liquid cooling plate can be further shaped by riveting from the middle to the periphery to control the flatness of the liquid cooling plate.

[0024] In a further embodiment, the liquid cooling plate body 1 includes an upper plate 11 and a lower plate 12. The upper plate 11 is punched upward to form a protrusion, and the lower plate 11 is a flat plate. The upper plate 11 and the lower plate 11 are welded and fixed together, and the two enclose the liquid cooling channel. The core-pulling rivet 5 avoids the distribution of the liquid cooling channel on the liquid cooling plate.

[0025] During use, coolant can be introduced into the cooling channel to cool the battery module and ensure its service life.

[0026] The difference between this embodiment and the previous embodiment is that: the upper plate 11 is a flat plate, and the lower plate 12 is pressed downward to form a groove, and the upper plate 11 and the lower plate 12 together form a cold liquid flow channel; or, the upper plate 11 is pressed upward and the lower plate 12 is pressed downward, and the upper plate 11 and the lower plate 12 together form a cold liquid flow channel.

[0027] In a further embodiment, the coolant flow channel includes a first coolant zone and a second coolant zone that are sequentially connected along a first direction. The first direction is the direction from the inlet to the outlet of the coolant flow channel. The coolant flows through the battery module along the first direction for an increasingly longer period of time to uniformly cool the battery module.

[0028] During use, as the coolant flows from the inlet into the coolant channel, it exchanges heat with the battery module, causing the temperature of the coolant to gradually rise during the flow. By gradually extending the heat exchange time with the battery module at the end furthest from the inlet, uniform cooling of the battery module is further ensured.

[0029] In a further embodiment, the first coolant zone is formed by multiple sets of transverse and vertical flow channels connected to form an arc shape, and the length of the vertical flow channels gradually decreases along the first direction to increase the number of coolant circulation flows; the second coolant zone is formed by multiple sets of vertical and transverse flow channels connected along the longitudinal direction, and the length of the transverse flow channels gradually decreases along the first direction to increase the number of coolant circulation flows.

[0030] The system first circulates the coolant laterally in the first cooling zone, and then circulates it vertically in the second cooling zone. This increases the heat exchange time between the coolant and the battery module, thus enhancing the cooling effect on the battery module. At the same time, by gradually reducing the length of the vertical / lateral flow channels in the first and second cooling zones, the number of coolant circulation cycles is gradually increased, thereby ensuring uniform cooling of the battery module.

[0031] In a further embodiment, the coolant flow channel is symmetrically arranged along the central axis and inlets are provided on both sides of the symmetry. The liquid cooling plate body 1 is provided with an outlet on the side away from the inlet. The coolant can enter the coolant flow channel simultaneously through the two inlets and flow out uniformly through the outlet. The dual inlets ensure the cooling efficiency of the battery module and the uniform cooling of the battery module.

[0032] In a further implementation, the battery box is also equipped with a bracket 2, which is frame-shaped and has support beams for supporting the liquid cooling plate body 1 arranged in an alternating manner inside. The outer walls of opposite sides of the bracket 2 are respectively equipped with an inlet and an outlet that are connected to the coolant flow channel.

[0033] The liquid cooling plate body 1 is snapped into the bracket 2, and the water inlet in the liquid cooling channel is connected to the water inlet of the bracket 2, and the water outlet in the liquid cooling channel is connected to the water outlet.

[0034] In a further implementation, the support 2 is also equipped with multiple conversion connectors, which are used to connect the cold liquid flow channel on the support 2 with the inlet / outlet water nozzles to facilitate smooth liquid flow.

[0035] In a further implementation, a plurality of first fixing holes are opened on the liquid cooling plate body 1, and a second fixing hole is provided on the support beam. The first fixing holes and the second fixing holes are correspondingly provided, and the core-pulling rivet 5 is used to fix the liquid cooling plate body 1 to the bracket 2 through the first fixing holes and the second fixing holes.

[0036] In a further embodiment, a first fixing member 61 is also included. The first fixing member 61 is fixedly installed on the upper end of the side wall of the bracket 2. The first fixing member 61 is formed by welding three layers of waist-shaped plates. The top waist-shaped plate has a U-shaped hole, the middle waist-shaped plate has a first circular hole, and the bottom waist-shaped plate has a second circular hole with a nut inserted in the circular hole. The U-shaped hole, the first circular hole, and the second circular hole are aligned vertically. The inner wall of the battery box has an extension piece facing the direction of the liquid cooling plate. The extension piece has a threaded hole, and the screw can pass through the extension piece and the waist-shaped plate in sequence and be threadedly connected to the nut at the bottom.

[0037] The extension plate and waist plate can be sequentially threaded through the bolts and connected to the bottom nut, thus ensuring that the upper end of the bracket 2 can be fixed to the inside of the box through the threaded connection, and further realizing the fixed installation of the liquid cooling plate.

[0038] In a further embodiment, the outer wall of the bracket 2 is also provided with a second fixing member 62 and a third fixing member 63 for support; the second fixing member 62 is a right trapezoidal shape and hollow inside, and the third fixing member 63 is stepped.

[0039] Specifically, by setting a second fixing member 62 and a third fixing member 63 around the bracket 2, stable support is provided at the lower end of the bracket 2; at the same time, by setting a hollow fixing member, the weight of the fixing member is further reduced, the weight of the battery box is reduced, and the driving range is increased.

[0040] In this embodiment, during operation: first, the liquid cooling plate 1 is placed behind the bracket 2, and the inlet and outlet of the liquid cooling plate are connected to the inlet and outlet of the bracket. Then, multiple pull rivets 5 are used to install the liquid cooling plate body 1 from the middle to both ends in sequence, so as to limit the liquid cooling plate body 1 and ensure that the battery module is cooled in the battery box.

[0041] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0042] Furthermore, 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0043] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0045] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A liquid-cooled assembly, comprising: Includes a liquid cooling plate body (1) for cooling the battery module, the liquid cooling plate body (1) being fixed to the battery box by a plurality of pop rivets (5); The liquid cooling plate body (1) includes an upper plate (11) and a lower plate (12) that are fixedly connected. The upper plate (11) and the lower plate (12) enclose each other to form a coolant flow channel for passing coolant. The core-pulling rivet (5) avoids the liquid cooling channels distributed on the upper edge and middle of the liquid cooling plate body (1).

2. The liquid-cooling assembly of claim 1, wherein, The coolant flow channel includes a first coolant zone and a second coolant zone that are connected in sequence along a first direction. The first direction is from the inlet to the outlet of the coolant flow channel. The coolant flows through the battery module in the first direction for a gradually increasing time to uniformly cool the battery module.

3. The liquid-cooling assembly of claim 2, wherein, The first coolant zone is formed by multiple sets of transverse and vertical flow channels connected to form an arc shape, and the length of the vertical flow channels gradually decreases along the first direction to increase the number of coolant circulation flows.

4. The liquid cooling assembly of claim 3, wherein, The second coolant zone is composed of multiple sets of vertical and horizontal flow channels arranged longitudinally and connected together. The length of the horizontal flow channels gradually decreases along the first direction to increase the number of coolant circulation flows.

5. The liquid-cooling assembly of claim 1, wherein, The battery box is also equipped with a bracket (2), which is frame-shaped and has support beams for supporting the liquid cooling plate body (1) arranged in an alternating manner inside. The bracket (2) has an inlet and an outlet nozzle connected to the cold liquid flow channel installed on opposite outer walls.

6. The liquid cooling assembly of claim 5, wherein, The liquid cooling plate body (1) has multiple first fixing holes, and the support beam has a second fixing hole. The first fixing holes and the second fixing holes are correspondingly set. The core-pulling rivet (5) fixes the liquid cooling plate body (1) to the bracket (2) through the first fixing hole and the second fixing hole.

7. The liquid cooling assembly of claim 1, wherein, The coolant flow channel is symmetrically arranged along the central axis of the liquid cooling plate body (1), and inlets are provided on both sides of the symmetrical arrangement. An outlet is provided on the side of the liquid cooling plate away from the inlet. The coolant can enter the coolant flow channel through the two inlets and flow out through the outlet.

8. The liquid cooling assembly of claim 6, wherein, The bracket (2) has a first fixing member (61) on the top of its outer wall. The first fixing member (61) is used to abut against the outer wall of the battery box. The bracket (2) also has a second fixing member (62) and a third fixing member (63) for support.

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