New energy power battery liquid cooling assembly

Abstract

The present invention discloses a new energy power battery liquid cooling assembly, and relates to the technical field of battery cooling devices, the new energy power battery liquid cooling assembly comprises a mounting cavity, a battery pack and a liquid cooling plate are mounted in the mounting cavity, the liquid cooling plate is mounted at the top end or the bottom end of the battery pack, and the new energy power battery liquid cooling assembly further comprises two groups of liquid cooling assemblies symmetrically mounted on the liquid cooling plate, the liquid cooling assembly comprises at least two groups of circulating pipes, two groups of multi-way pipes and a water pump, main pipes of the two groups of multi-way pipes are respectively communicated with two ends of the water pump, two ends of each circulating pipe are respectively communicated with branch pipes of the two groups of multi-way pipes, and the circulating pipes are arranged on the liquid cooling plate. The multiple groups of cooling pipes are respectively communicated with the branch pipes of the multi-way pipe, and the multiple groups of cooling pipes are respectively used for cooling each part of the battery pack, so that the purpose of improving the temperature consistency of the batteries is achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of battery cooling devices, and in particular relates to a liquid cooling assembly for a new energy power battery. Background Art

[0002] As the heart of new energy vehicles, power batteries are critical. However, new energy vehicles are still criticized by some people for long charging times and easy spontaneous combustion. This is actually related to the cooling effect of the battery. When charging, the temperature of the battery rises and needs to be cooled evenly and promptly. The accumulation of temperature is indeed dangerous. The main indicators for judging the effectiveness of battery cooling components are safety hazards of the battery pack, cooling efficiency and temperature consistency.

[0003] The patent with publication number CN113054299B discloses a liquid-cooled integrated power battery system for new energy vehicles. Two liquid cooling tubes are symmetrically arranged inside the storage bin. The two liquid cooling tubes are positioned and supported in the storage bin by a number of positioning support blocks. The storage bin, the number of positioning support blocks and the two liquid cooling tubes are integrated together by a heat-insulating support foam silicone pad. The inner wall of the storage bin and above the liquid cooling tube are connected with an installation beam.

[0004] The two groups of liquid cooling tubes in the above liquid cooling system cool the battery pack from one end to the other end in a circuitous manner. The cooling effect of the liquid cooling tubes near the water inlet end is good. As the amount of heat absorbed increases, the heat absorption effect gradually deteriorates, and temperature consistency cannot be guaranteed. Summary of the invention

[0005] In view of the problems mentioned in the background technology, the purpose of the present invention is to provide a new energy power battery liquid cooling assembly to solve the problems mentioned in the background technology.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] The new energy power battery liquid cooling component includes an installation cavity, in which a battery pack and a liquid cooling plate are installed. The liquid cooling plate is installed at the top or bottom of the battery pack. It also includes two groups of liquid cooling components symmetrically installed on the liquid cooling plate. The liquid cooling component includes at least two groups of circulation pipes, two groups of multi-way pipes and a water pump. The main pipes of the two groups of multi-way pipes are respectively connected to the two ends of the water pump, and the two ends of the circulation pipe are respectively connected to the branch pipes of the two groups of multi-way pipes. The circulation pipes are all opened on the liquid cooling plate.

[0008] As a preferred technical solution, the circulation pipe includes a cooling pipe and a water outlet pipe, and the cooling pipe is opened on the liquid cooling pipe in an S-shaped circuitous manner.

[0009] As a preferred technical solution, the multiple groups of cooling pipes are symmetrical about the multi-channel main pipe.

[0010] As a preferred technical solution, water outlet blocks are installed on the liquid cooling plates on both sides of the liquid cooling assembly, and the cooling pipe and the water outlet pipe are connected through the water outlet blocks.

[0011] As a preferred technical solution, one group of multi-way pipes is opened on the liquid cooling plate, a water inlet block is installed in the middle of the edge of the liquid cooling plate, and the main pipe of the multi-way pipe passes through the water inlet block and is connected to the water outlet of the water pump.

[0012] As a preferred technical solution, a cooling assembly is installed on the installation cavity close to the water outlet block, and the output end of the cooling assembly faces the multiple groups of water outlet pipes.

[0013] As a preferred technical solution, the cooling assembly includes a cooling fan installed on the inner wall of the installation cavity, and the air outlet of the cooling fan faces the water outlet pipe.

[0014] As a preferred technical solution, a heating component is installed between the water pump and any multi-way pipe.

[0015] As a preferred technical solution, a buffer assembly is installed between the battery pack and the inner wall of the installation cavity.

[0016] As a preferred technical solution, the buffer assembly includes connecting rods installed on both sides of the bottom end of the battery pack, and elastic parts and guide rods are installed between the two ends of the connecting rods and the installation cavity respectively, and the guide rods are perpendicular to the installation cavity and the connecting rods.

[0017] Beneficial Effects

[0018] In the present application, multiple groups of cooling pipes are respectively connected to the branch pipes of the multi-way pipe, and the multiple groups of cooling pipes cool various parts of the battery pack respectively, so as to achieve the purpose of improving the temperature consistency of the battery.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a three-dimensional structural diagram of the new energy power battery liquid cooling assembly proposed by the present invention;

[0021] Figure 2 This is a front view of the new energy power battery liquid cooling assembly proposed by the present invention;

[0022] Figure 3 for Figure 2 Cross-sectional view along the AA direction;

[0023] Figure 4 for Figure 3 An enlarged view of point B.

[0024] Figure numerals: 1. installation cavity; 2. battery pack; 3. liquid cooling plate; 4. water pump; 5. water inlet block; 6. three-way pipe one; 61. main pipe one; 62. branch pipe one; 7. cooling pipe one; 8. cooling pipe two; 9. water outlet block; 10. water outlet pipe one; 11. three-way pipe two; 111. main pipe two; 112. branch pipe two; 12. cooling fan; 13. buffer assembly; 131. guide rod; 132. elastic member; 133. connecting rod; 14. water outlet pipe two. DETAILED DESCRIPTION

[0025] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar symbols throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0026] Example 1

[0027] refer to Figures 1 to 3 The new energy power battery liquid cooling assembly described in this embodiment includes an installation cavity 1, in which a battery pack 2 and a liquid cooling plate 3 are installed. The liquid cooling plate 3 is installed at the top or bottom of the battery pack 2. A group of water inlet blocks 5 are respectively installed in the middle of both sides of the liquid cooling plate 3. The two ends of the water inlet blocks 5 are respectively connected with the water outlet end of the water pump 4 and the main pipe 61 of the three-way pipe 6. The three-way pipe 6 is opened on the liquid cooling plate 3. The two groups of branch pipes 62 of the three-way pipe 6 are respectively connected with the cooling pipe 7 and the cooling pipe 8 opened on the liquid cooling plate 3. The cooling pipes 7 and the cooling pipes 8 on both sides are symmetrical. The other two sides of the liquid cooling plate 3 are respectively A group of water outlet blocks 9 is installed, two groups of cooling pipes 1 7 pass through the water outlet block 9 on the same side and are connected to water outlet pipe 1 10, two groups of cooling pipes 2 8 pass through the water outlet block 9 on the same side and are connected to water outlet pipe 2 14, cooling components are installed at the water outlet ends of the two groups of water outlet pipes 10 and the two groups of water outlet pipes 2 14 and the adjacent water outlet blocks 9, the output ends of the cooling components are respectively facing water outlet pipe 1 10 and water outlet pipe 2 14, and also include three-way pipe 2 11, the water inlet end of the water pump 4 is connected to the main pipe 2 111 of the three-way pipe 2 11, and the two groups of branch pipes 2 112 of the three-way pipe 2 11 are respectively connected to a group of water outlet pipe 10 and water outlet pipe 2 14.

[0028] Preferably, cooling tube 1 7 and cooling tube 2 8 are both arranged in an S-shape and are arranged on the liquid cooling tube.

[0029] Preferably, cooling pipe 1 7 and cooling pipe 2 8 are symmetrical about main pipe 1 61 .

[0030] Preferably, the cooling assembly includes a cooling fan 12 installed on the inner wall of the installation cavity 1, and the air outlet of the cooling fan 12 faces the water outlet pipe 10 / water outlet pipe 2 14.

[0031] The water pump 4 pumps the cooled coolant into the main pipe 61, and then inputs it into the cooling pipe 1 7 and the cooling pipe 2 8 through two groups of branch pipes 62. Each group of cooling pipes is only responsible for cooling 1 / 4 of the battery pack, and the S-shaped winding cooling pipes are used to increase the cooling area, reduce the cooling distance, and improve the temperature consistency; the cooling fan 12 can cool the two groups of outlet pipes 10 / outlet pipes 14 at the same time, saving resources, and further cooling the outlet pipes 10 and 14 before they are connected to the branch pipe 2 112, ensuring that the coolant achieves a sufficient cooling effect before entering from the main pipe 61.

[0032] It is worth noting that the above description is only one of the implementation modes. Specifically, a group of cooling pipes and a group of water outlet pipes form a group of circulation pipes. Multiple groups of circulation pipes are connected to the input end of the water pump 4 through a group of multi-way pipes. The output end of the water pump 4 is connected to the multiple groups of circulation pipes one by one through a group of multi-way pipes, thereby completing the function of a group of water pump 4 driving multiple groups of circulation pipes. The multiple groups of circulation pipes respectively correspond to the local parts of the cooling battery pack, thereby improving the cooling effect and ensuring the temperature consistency.

[0033] Preferably, a heating component can also be installed between the water pump 4 and the three-way pipe 1 6 or the three-way pipe 2 11 to ensure that the battery pack is heated when the temperature is low in winter.

[0034] Preferably, the battery pack 2 is installed in the installation cavity 1 through a buffer assembly 13 to prevent the battery pack 2 from being kept stable when it is bumped or impacted, and to prevent it from colliding with the liquid cooling plate 3 .

[0035] Preferably, the buffer assembly 3 includes a connecting rod 133 installed on both sides of the bottom end of the battery pack 2, and an elastic member 132 and a guide rod 131 are installed between the two ends of the connecting rod 133 and the installation cavity 1 respectively, and the guide rod 131 is perpendicular to the installation cavity 1 and the connecting rod 133.

[0036] Preferably, the elastic member 132 is a spring, and the guide rod 131 is inserted into the spring.

[0037] The guide rod 131 ensures that the battery pack 2 remains stable in the horizontal direction, and the elastic member 132 ensures that the battery pack 2 has a buffering effect in the vertical direction.

[0038] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0040] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0042] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A new energy power battery liquid cooling assembly, comprising a mounting cavity (1), characterized in that: A battery pack (2) and a liquid cooling plate (3) are installed in the installation cavity (1), the liquid cooling plate (3) being installed at the top or bottom of the battery pack (2), and also comprising two groups of liquid cooling components symmetrically installed on the liquid cooling plate (3), the liquid cooling components comprising at least two groups of circulation pipes, two groups of multi-way pipes and a water pump (4), the main pipes of the two groups of multi-way pipes being respectively connected to the two ends of the water pump (4), the two ends of the circulation pipe being respectively connected to the branch pipes of the two groups of multi-way pipes, and the circulation pipes are all opened on the liquid cooling plate (3).

2. The new energy power battery liquid cooling assembly according to claim 1, characterized in that: The circulation pipe comprises a cooling pipe and a water outlet pipe, and the cooling pipe is arranged on the liquid cooling pipe in an S-shaped circuitous manner.

3. The new energy power battery liquid cooling assembly according to claim 1, characterized in that: The multiple groups of cooling pipes are symmetrical about the multi-pass pipe main pipe.

4. The new energy power battery liquid cooling assembly according to claim 1, characterized in that: Water outlet blocks (9) are installed on the liquid cooling plates (3) on both sides of the liquid cooling assembly, and the cooling pipe and the water outlet pipe are connected through the water outlet block (9).

5. The new energy power battery liquid cooling assembly according to claim 4 is characterized in that: One group of multi-way pipes is opened on the liquid cooling plate (3), a water inlet block (5) is installed in the middle of the edge of the liquid cooling plate (3), and the main pipe of the multi-way pipe passes through the water inlet block (5) and is connected to the water outlet end of the water pump (4).

6. The new energy power battery liquid cooling assembly according to claim 1, characterized in that: A cooling assembly is installed on the installation cavity (1) close to the water outlet block (9), and the output end of the cooling assembly faces the plurality of water outlet pipes.

7. The new energy power battery liquid cooling assembly according to claim 6, characterized in that: The cooling assembly comprises a cooling fan (12) installed on the inner wall of the installation cavity (1), and the air outlet of the cooling fan (12) faces the water outlet pipe.

8. The new energy power battery liquid cooling assembly according to claim 1, characterized in that: A heating component is installed between the water pump (4) and any multi-way pipe.

9. The new energy power battery liquid cooling assembly according to claim 1, characterized in that: A buffer assembly (13) is installed between the battery pack (2) and the inner wall of the installation cavity (1).

10. The new energy power battery liquid cooling assembly according to claim 9, characterized in that: The buffer assembly (3) comprises connecting rods (133) installed on both sides of the bottom end of the battery pack (2), elastic members (132) and guide rods (131) are installed between the two ends of the connecting rod (133) and the installation cavity (1), and the guide rods (131) are perpendicular to the installation cavity (1) and the connecting rod (133).

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