Elastic battery water-cooling radiator, battery and electric device

Abstract

The invention relates to the field of new energy, in particular to the field of battery heat dissipation. An elastic battery water-cooling radiator comprises an elastic structure formed by installing an elastic piece in a radiating core, or an elastic structure formed by clamping the elastic piece between two rows of radiating cores, or an elastic structure formed by alternately installing the two rows of radiating cores and the elastic piece. The battery is placed on the outer side of the heat dissipation core, the heat dissipation core is tightly attached to the battery through the elastic force of the elastic pieces, expansion and contraction of the battery are adapted, and therefore the good heat dissipation effect is achieved, and the battery is prevented from loosening. And the elastic force of the elastic sheet can be adjusted to proper strength, so that the battery can be protected. The heat dissipation core is composed of one or more flat pipes side by side, the flat pipes can be porous flat pipes, and the elastic pieces are composed of wave-shaped metal pieces and preferably made of stainless steel materials. The heat dissipation core penetrates through the water chamber bottom plate to communicate the small water chambers with the water inlet and outlet to form a water channel, and the structure is simple. The battery comprises the radiator. A power utilization device comprises the battery.

Description

Technical Field

[0001] The present invention relates to the field of new energy, and in particular to the field of battery heat dissipation. Background Art

[0002] New energy vehicles are characterized by high efficiency and environmental friendliness. The lifespan, environmental friendliness, safety, and reliability of new energy vehicle batteries determine the quality and performance of these vehicles. Typically, the charging and discharging process of batteries is accompanied by exothermic reactions, and batteries are very sensitive to temperature changes. Battery temperature variations determine their lifespan and stability, and temperature has a crucial impact on battery performance.

[0003] As an efficient heat dissipation solution, water cooling technology has significant advantages in battery temperature control. The design and production of the water cooling plate and the bonding method between the water cooling plate and the battery heat source are the core parts of the water cooling solution.

[0004] Application No. 201510344152.8 proposes a core-type battery water-cooled radiator, including a heat sink, a waterproof baffle, a water chamber bottom plate, a water chamber baffle, a water chamber cover plate, and a water inlet and outlet. The heat sink is composed of one or more porous flat tubes arranged side by side. The two ends of the heat sink pass through the waterproof baffle. The space enclosed by the heat sink, the heat sink, and the waterproof baffles at both ends is used to place the battery module. The water chamber bottom plate and the water chamber cover plate form a water chamber. The water chamber baffle divides the water chamber into several small water chambers. The porous flat tubes pass through the water chamber bottom plate to connect the small water chambers and the water inlet and outlet to form a water channel. The heat sink of this structure is inserted in the middle of the battery module and is close to the battery module for heat dissipation. The heat dissipation of the battery module is transformed from traditional single-sided heat dissipation to three-dimensional multi-sided heat dissipation, thereby effectively increasing the heat dissipation area of ​​the battery, reducing the heat density of the battery, and improving the accuracy of temperature control. However, current batteries expand and contract during operation, while the spacing between the heat sinks is fixed. Therefore, unlike the water-cooling plate placed at the bottom of the battery, the heat sink is on the side of the battery, making it difficult to keep the battery and the heat sink tightly fitted. Generally, elastic material is added between the battery and the heat sink, but this reduces the heat dissipation efficiency. Summary of the Invention

[0005] The present invention provides an elastic battery water-cooling radiator, a battery and an electrical device to alleviate the deficiencies of the prior art.

[0006] An elastic battery water-cooling radiator includes an elastic structure formed by installing springs inside a heat sink, or by sandwiching springs between two rows of heat sinks, or by alternating rows of heat sinks and springs. The batteries are placed outside the heat sink, and the elastic force of the springs maintains a tight fit between the heat sink and the batteries.

[0007] The heat sink is composed of one or more parallel flat tubes, which can be porous. The springs are made of corrugated metal sheets, preferably stainless steel. During compression and rebound, the wave height and wave distance of the corrugated metal sheets can freely deviate. The springs can also be made of elastic materials such as spring arrays, rubber pads, and air cushions.

[0008] The flexible battery water-cooling radiator also includes a water chamber base, a water chamber baffle, a water chamber cover, and a water inlet and outlet. The base and cover form the water chamber, which is divided into several smaller chambers by the baffle. A heat sink passes through the base, connecting the smaller chambers and the water inlet and outlet to form a water channel. The water channel can also be designed to fold the hot and cold water flows in half, improving thermal balance. The flexible battery water-cooling radiator also includes a waterproof baffle, through which both ends of the heat sink pass. The waterproof baffle separates the battery from the water chamber and the water inlet and outlet.

[0009] The beneficial effects of the present invention are:

[0010] A flexible battery water-cooling radiator includes an elastic structure formed by springs installed within a heat sink core, or by two rows of heat sink cores sandwiching the springs, or by alternating rows of heat sink cores and springs. The batteries are placed outside the heat sink cores, and the elastic force of the springs maintains a tight fit between the heat sink cores and the batteries, accommodating battery expansion and contraction to achieve effective heat dissipation and prevent the batteries from loosening. Furthermore, the elastic force of the springs can be adjusted to an appropriate level to protect the batteries.

[0011] The heat sink core is composed of one or more parallel flat tubes, which can be porous. These tubes offer excellent heat dissipation and structural strength. The spring clip is made of corrugated metal sheets, preferably stainless steel. This corrugated sheet metal structure occupies minimal space, allows for flexible adjustment of elasticity and wave height and pitch, and is simple to manufacture and low in cost. Stainless steel offers excellent elasticity and corrosion resistance. During compression and rebound, the wave height and pitch of the corrugated sheet metal can freely shift, providing sufficient travel to generate elastic force. The flat tubes and corrugated sheet metal are difficult to bend in their flat orientation, forming a supporting beam for the battery pack. This is suitable for CTP cell-to-battery pack and CTC cell-to-frame configurations, significantly improving space utilization, battery capacity, and the range of electric vehicles. The spring clip can also be composed of elastic materials such as spring arrays, rubber pads, and air cushions, facilitating the selection of different elastic materials for different application scenarios.

[0012] The flexible battery water-cooling radiator also includes a water chamber base, a water chamber baffle, a water chamber cover, and water inlets and outlets. The base and cover form the water chamber, which is divided into several smaller chambers by the baffles. A heat sink passes through the base, connecting the smaller chambers and the inlets and outlets to form a water channel. This structure, similar to that of an automotive engine radiator, features mature processing technology, high reliability, and low production costs. It also simplifies the flow channel structure, allowing the entire battery pack to have only one water inlet and one outlet. The water channel can also be designed to fold the hot and cold water flows in half, enhancing thermal balance and improving battery performance. The flexible battery water-cooling radiator also includes a waterproof baffle, through which both ends of the heat sink pass, separating the battery from the water chamber and the inlets and outlets. The waterproof baffle separates the welds and joints between the battery and the water-cooling radiator, improving safety and preventing the welds from being affected by the vibration of the heat sink core caused by battery compression. The water chamber and waterproof baffle also form a supporting beam structure for the battery pack, reinforcing its structural strength.

[0013] The present invention provides a battery comprising the radiator.

[0014] The beneficial effect of the present invention is that the battery has all the advantages of the above-mentioned radiator, which will not be described in detail here.

[0015] The present invention provides an electrical device comprising the battery.

[0016] The beneficial effect of the present invention is that the electrical device has all the advantages of the above-mentioned battery, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of an elastic structure formed by installing spring pieces inside a heat dissipation core according to the present invention.

[0018] Figure 2 It is a schematic diagram of an elastic structure formed by two rows of heat dissipation cores sandwiching a spring sheet in the middle according to the present invention.

[0019] Figure 3 It is a schematic diagram of an elastic structure formed by alternately installing two rows of heat dissipation cores and springs according to the present invention.

[0020] Figure 4 、 5 It is a structural schematic diagram of the elastic battery water-cooling radiator according to the present invention.

[0021] Figure 6 Schematic diagram of the structure of a battery according to the present invention.

[0022] In the figure, 1. Elastic structure, 2. Heat dissipation core, 2a. Flat tube, 2b. Porous flat tube, 3. Shrapnel, 3a. Corrugated metal sheet, 3b. Rubber pad, 4. Battery, 5. Water chamber, 5a. Water chamber bottom plate, 5b. Water chamber baffle, 5c. Water chamber cover, 5d. Small water chamber, 6. Water inlet and outlet, 7. Waterproof baffle, 8. Box, 9. Battery pack. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to the accompanying drawings and examples.

[0024] Example 1 An embodiment of the present invention is an elastic battery water-cooling radiator, comprising an elastic structure formed by installing springs inside a heat dissipation core; like Figure 1 、 4 Figure 1 shows an elastic battery water-cooling radiator, comprising an elastic structure 1 formed by springs 3 installed within a heat sink 2. Each row of heat sink 2 consists of a flat tube 2a, and the springs 3 are composed of corrugated metal sheets 3a. Batteries 4 are placed outside the heat sink 2, with the elastic force of the springs 3 maintaining a tight fit between the heat sink 2 and the batteries 4. The elastic battery water-cooling radiator also includes a water chamber bottom plate 5a, a water chamber baffle 5b, a water chamber cover 5c, and a water inlet and outlet 6. The water chamber bottom plate 5a and the water chamber cover 5c form a water chamber 5. The water chamber baffle 5b divides the water chamber 5 into several small water chambers 5d. The heat sink 2 passes through the water chamber bottom plate 5a, connecting the small water chambers 5d and the water inlet and outlet 6 to form a water channel. The elastic battery water-cooling radiator also includes a waterproof baffle 7, through which both ends of the heat sink 2 pass. The waterproof baffle 7 separates the batteries 4 from the water chamber 5 and the water inlet and outlet 6.

[0025] Example 2 An embodiment of the present invention is an elastic battery water-cooling radiator, comprising an elastic structure formed by two rows of heat dissipation cores sandwiching a spring sheet; like Figure 2 、 5As shown: An elastic battery water-cooled radiator includes an elastic structure 1 formed by two rows of heat dissipation cores 2 sandwiching a spring 3 in the middle. Each row of heat dissipation cores 2 is composed of multiple porous flat tubes 2b arranged side by side, and the spring 3 is composed of a corrugated metal sheet 3a. The battery 4 is placed on the outside of the heat dissipation core 2, and the elastic force of the spring 3 keeps the heat dissipation core 2 and the battery 4 in close contact. The elastic battery water-cooled radiator also includes a water chamber bottom plate 5a, a water chamber baffle 5b, a water chamber cover plate 5c and a water inlet and outlet 6. The water chamber bottom plate 5a and the water chamber cover plate 5c form a water chamber 5. The water chamber baffle 5b divides the water chamber 5 into several small water chambers 5d. The heat dissipation core 2 passes through the water chamber bottom plate 5a to connect the small water chambers 5d and the water inlet and outlet 6 to form a water channel. The water channel is designed to have the effect of folding the hot and cold water flows in half, thereby increasing the thermal balance performance. The elastic battery water-cooled radiator further includes a waterproof baffle 7 , and both ends of the heat dissipation core 2 pass through the waterproof baffle 7 . The waterproof baffle 7 separates the battery 4 from the water chamber 5 and the water inlet and outlet 6 .

[0026] Example 3 An embodiment of the present invention is an elastic battery water-cooling radiator, comprising an elastic structure formed by alternatingly installing two rows of heat dissipation cores and springs; like Figure 3 The figure shows an elastic battery water-cooling radiator, comprising an elastic structure 1 formed by alternating rows of heat sink cores 2 and springs 3. Each row of heat sink cores 2 is composed of multiple porous flat tubes 2b arranged side by side, and the springs 3 are composed of rubber pads 3b. Batteries 4 are placed outside the heat sink cores 2, with the elastic force of the springs 3 maintaining a tight fit between the heat sink cores 2 and the batteries 4.

[0027] Example 4 An embodiment of the present invention is a battery; like Figure 6 As shown: a battery, including the above-mentioned elastic battery water-cooling radiator, the elastic battery water-cooling radiator and the battery 4 are installed in a box 8 to form a battery pack 9.

[0028] Example 5

[0029] An embodiment of the present invention is an electric vehicle; An electric vehicle comprises the above-mentioned battery.

Claims

1. A flexible battery water-cooling radiator, characterized by: It includes an elastic structure formed by installing spring pieces inside the heat dissipation core.

2. A flexible battery water-cooling radiator, characterized by: The utility model comprises an elastic structure formed by two rows of heat dissipation cores sandwiching a spring sheet in the middle.

3. A flexible battery water-cooling radiator, characterized by: The utility model comprises an elastic structure formed by alternately installing two rows of heat dissipation cores and spring sheets.

4. The radiator according to claim 1, 2 or 3, characterized in that: The shrapnel is composed of a corrugated metal sheet.

5. The radiator according to claim 1, 2 or 3, characterized in that: The spring piece is composed of elastic materials such as a spring array, a rubber pad, and an air cushion.

6. The radiator according to claim 1, 2 or 3, characterized in that: The battery is placed outside the heat dissipation core, and the heat dissipation core and the battery are kept in close contact by the elastic force of the spring.

7. The radiator according to claim 1, 2 or 3, characterized in that: It also includes a water chamber bottom plate, a water chamber baffle, a water chamber cover plate and a water inlet and outlet. The water chamber bottom plate and the water chamber cover plate constitute a water chamber. The water chamber baffle divides the water chamber into several small water chambers. The heat dissipation core passes through the water chamber bottom plate to connect each of the small water chambers and the water inlet and outlet to form a water channel.

8. The radiator according to claim 7, wherein: It also includes a waterproof baffle, through which both ends of the heat dissipation core pass, and the waterproof baffle separates the battery from the water chamber and the water inlet and outlet.

9. A battery, characterized in that: The heat sink comprises the heat sink according to any one of claims 1 to 8.

10. An electrical device, characterized in that: The invention comprises the battery according to claim 9.

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