Water nozzle structure of battery liquid cooling plate
By using a bent pipe nozzle structure and spinning technology, the flow resistance and cost issues of the coolant inlet and outlet nozzles of the liquid cooling plate of the energy storage battery pack were solved, achieving efficient heat exchange and cost reduction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG HANGJI METAL PRODUCT INDUSTRIES CO LTD
- Filing Date
- 2025-05-22
- Publication Date
- 2026-04-17
AI Technical Summary
The existing liquid cooling plate structure of energy storage battery packs has high ineffective flow resistance in the inlet and outlet coolant nozzles, which affects heat exchange performance and has high production costs.
The water nozzle adopts a bent pipe structure, including a bent pipe section and a transition section. It features a centrally symmetrical design, combined with a quick connector and a raised ring at the root of the bent pipe, to ensure smooth fluid flow and fix its position, reduce flow resistance, and improve the traditional machining method by spinning.
It effectively reduces flow resistance, improves heat exchange performance, simplifies the processing, reduces production costs, adapts to different product needs, and has a simple structure.
Smart Images

Figure CN224136224U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of liquid cooling plate structure design for energy storage battery packs, specifically a water nozzle structure for a battery liquid cooling plate. Background Technology
[0002] The coolant inlet and outlet nozzles of the liquid cooling plate in an energy storage battery pack are one of the structural components of the liquid cooling plate, typically consisting of a coolant inlet nozzle and a coolant outlet nozzle. Because the coolant affects the flow velocity and pressure drop in the flow channel as it passes through the inlet and outlet nozzles, the design of the inlet and outlet nozzles needs to be optimized. Currently, the coolant inlet and outlet nozzle structures of energy storage battery pack liquid cooling plates mostly adopt right-angle machining technology, which increases the ineffective flow resistance at the coolant inlet and outlet and reduces the product's heat exchange performance.
[0003] Therefore, there is an urgent need for a battery liquid cooling plate water nozzle structure that can effectively change the structure of the coolant inlet and outlet water nozzles of the energy storage battery pack cooling plate, optimize the pressure resistance change and heat exchange problem of the flow channel, and at the same time reduce the production cost. Utility Model Content
[0004] The purpose of this invention is to provide a battery liquid cooling plate water nozzle structure to solve the problems mentioned in the background art.
[0005] The technical solution adopted in this utility model is as follows:
[0006] A battery liquid cooling plate water nozzle structure includes a bent water nozzle body, which is disposed on the liquid cooling base plate of the energy storage battery. The bent water nozzle body includes a transition section, and both ends of the transition section are connected to bent pipe sections. The bent pipe sections adopt an annular structure, and the two bent pipe sections adopt a centrally symmetrical structure.
[0007] Preferably, the transition section is a straight pipe structure, and its orientation is parallel to the liquid cooling base plate of the energy storage battery.
[0008] Preferably, the upper end of the curved water tap body is provided with a quick connector insertion port for inserting a quick connector without loosening.
[0009] Preferably, the quick connector insertion port is provided with a quick connector mating groove at the connection between the quick connector and the bend section, which is used for assembly and positioning when the bend faucet body and the quick connector are mated, and to counteract the backlash force when condensate is injected.
[0010] Preferably, a bend root protrusion ring is provided at the root position of the bend water nozzle body to cooperate with the liquid cooling base plate of the energy storage battery for positioning and fixing the position of the inlet and outlet coolant water nozzle bend structure to prevent it from rotating or shifting.
[0011] Preferably, the width and height of the convex ring at the root of the bend are both less than 2 mm.
[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:
[0013] This invention effectively reduces the ineffective flow resistance generated when water flows into the liquid cooling plate, improving the product's heat exchange performance. Furthermore, it features a simple structure, easy processing, and significantly reduced processing and material costs. It can be directly used on existing liquid cooling plates to replace traditional water nozzles and can accommodate nozzle deformation caused by product deformation. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0015] In the diagram: 1. Water nozzle body with bend; 11. Quick connector insertion port; 12. Quick connector mating groove; 13. Protruding ring at the root of the bend; 14. Transition section; 15. Bend section; 2. Liquid cooling base plate for energy storage battery. Detailed Implementation
[0016] The specific embodiments of this utility model are described in detail below.
[0017] The "range" disclosed in this utility model is defined by a lower limit and an upper limit. A given range is defined by selecting a lower limit and an upper limit, which define the boundaries of a particular range. Ranges defined in this way can include or exclude endpoints and can be arbitrarily combined; that is, any lower limit can be combined with any upper limit to form a range. For example, if a range of 10–50 is listed for a specific parameter, it is also expected that ranges of 10–40 and 20–50 are also included. Furthermore, if the minimum range values are listed as 1 and 2, and the maximum range values are listed as 3, 4, and 5, then the following ranges are all expected: 1–3, 1–4, 1–5, 2–3, 2–4, and 2–5. In this application, unless otherwise stated, the numerical range "a–b" represents a shortened representation of any combination of real numbers between a and b, where a and b are real numbers. For example, the numerical range "0–5" means that all real numbers between "0–5" have been listed herein; "0–5" is merely a shortened representation of these numerical combinations.
[0018] Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions.
[0019] Unless otherwise specified, all technical features and optional technical features of this application may be combined to form new technical solutions.
[0020] Unless otherwise specified, all steps in this application may be performed sequentially or randomly, preferably sequentially. For example, the method includes steps (a) and (b), indicating that the method may include steps (a) and (b) performed sequentially, or it may include steps (b) and (a) performed sequentially. For example, the mention that the method may also include step (c) indicates that step (c) may be added to the method in any order. For example, the method may include steps (a), (b), and (c), or it may include steps (a), (c), and (b), or it may include steps (c), (a), and (b), etc.
[0021] Unless otherwise specified, the terms "comprising" and "including" as used in this application can be open-ended or closed-ended. For example, "comprising" and "including" can mean that other components not listed may also be included, or that only the listed components may be included.
[0022] Unless otherwise specified, the reaction will proceed under normal temperature and pressure conditions.
[0023] Unless otherwise specified, all parts or percentages are by weight or by weight percentage.
[0024] In this invention, all the substances used are known substances that can be purchased or synthesized by known methods.
[0025] In this invention, all the devices or equipment used are conventional devices or equipment known in the art and are readily available.
[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.
[0027] Example:
[0028] A battery liquid cooling plate water nozzle structure, such as Figure 1 As shown, it includes a curved water nozzle body 1, which is mounted on the liquid cooling base plate 2 of the energy storage battery. The curved water nozzle body 1 includes a transition section 14, and both ends of the transition section 14 are connected to curved sections 15. The curved sections 15 adopt a ring structure, and the two curved sections 15 adopt a centrally symmetrical structure.
[0029] In one possible implementation, the tube body is processed with bend angles and sizes according to actual needs. The same bend angle can realize a traditional horizontal connector water nozzle or a vertically upward water nozzle structure. The tube root is machined with a convex ring for fixed positioning on the liquid cooling plate base plate, fixing the pressure gap between the two connectors and the direction of the connector.
[0030] In one possible implementation, the curved water nozzle body 1 has two parts, namely a coolant inlet nozzle and a coolant outlet nozzle, which are located at the same two ends on the same side of the energy storage battery liquid cooling base plate 2.
[0031] In one possible implementation, the transition section 14 is a straight pipe structure, and its orientation is parallel to the liquid cooling base plate 2 of the energy storage battery.
[0032] In one possible implementation, the upper end of the curved water tap body 1 is provided with a quick connector insertion port 11 for inserting a quick connector without loosening.
[0033] In one possible implementation, a quick connector insertion port 11 is provided with a quick connector mating groove 12 at the connection between the quick connector insertion port 11 and the bend section 15, which is used for assembly and positioning when the bend faucet body 1 is mated with the quick connector, and to counteract the backlash force when condensate is injected.
[0034] In one possible implementation, an aluminum tube with a diameter matching the corresponding connector is rolled to form a quick connector insertion port 11, and a sealing groove is machined to form a quick connector mating groove 12, allowing the coolant inlet / outlet nozzle to be fixedly fitted to the connector. Through positioning installation, a convex ring structure is machined at the root of the nozzle bend to match and position with the mounting holes of the liquid cooling plate of the energy storage battery pack, preventing rotational displacement.
[0035] In one possible implementation, a bend root protrusion ring 13 is provided at the root of the bend water nozzle body 1, which is used to cooperate with the energy storage battery liquid cooling base plate 2 for positioning, fixing the position of the inlet and outlet coolant water nozzle bend structure, and preventing it from rotating or shifting.
[0036] In one possible implementation, the width and height of the convex ring 13 at the root of the bend are both less than 2 mm.
[0037] In one possible implementation, the protruding ring 13 at the root of the bend fits precisely with the bottom of the liquid cooling plate to ensure no rotation or displacement during welding; the bend nozzle body 1 adapts to different production needs (one or more bends) through different bend sizes and angle variations; the quick connector mating groove 12, with its right-angled edge, locks in place with the mating quick connector to ensure that the quick connector does not slip out when flushing condensate, and the form and position tolerances of the pipe opening must be controlled. The bend position strictly ensures the flatness ratio of the bend to ensure that no bursting or leakage occurs at the pipe position during high-pressure flushing.
[0038] In one possible implementation, by replacing traditional machined faucets with pipe processing, the original faucet functions and performance are maintained while the smooth inner wall of the pipe and the bends in the pipe reduce the flow resistance of the condensate when it turns, thus improving product performance.
[0039] In one possible implementation, the spin-forming groove positioning and quick-connect fitting ensure the original compatibility and strength while significantly reducing processing costs. The right-angled edges created by spin forming provide higher structural strength, ensuring sufficient support during high-pressure condensate filling.
[0040] In one possible implementation, the nozzle is positioned by the protruding ring 13 at the root of the bend, ensuring the nozzle spacing. Furthermore, since the nozzles are made of aluminum tubing, slight angular misalignment or nozzle tip warping after welding to the liquid cooling plate base can be corrected using a fixture, increasing the tolerance for errors in product processing. This achieves both cost reduction and improved product performance.
[0041] In one possible implementation, the traditional machined water tap is replaced with three main parts formed by pipe machining: the quick coupling mating groove 12 is made by rolling the pipe using a spinning machine. The mating requirements of different quick couplings can be adapted by changing the rolling roller;
[0042] The elbow faucet body 1 is made by bending pipe processing. The pipe diameter, bending angle and bending position can be modified according to product requirements to adapt to the spatial structure requirements of different products for the faucet.
[0043] The convex ring 13 at the root of the bend is formed by pressing with a hydraulic press. During processing, the thickness of the convex ring must be less than 2 mm to ensure that it can be welded to the product base plate.
[0044] In one possible implementation, this application can meet the high-pressure condensate inlet and outlet requirements of liquid-cooled plate water nozzles, reducing flow resistance during condensate inflow or outflow and enhancing the product's heat exchange efficiency. It can also adapt to different product needs by modifying the bend angle and position, and features a simple structure, convenient processing, and low processing and material costs. It can be directly applied to the water nozzles of existing liquid-cooled plate base plates in the industry and can accommodate arbitrary deformations of water nozzle forms for different products.
[0045] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A battery liquid cold plate water nozzle structure, characterized in that: The device includes a curved water nozzle body (1), which is mounted on the liquid cooling base plate (2) of the energy storage battery. The curved water nozzle body (1) includes a transition section (14), and both ends of the transition section (14) are connected to curved pipe sections (15). The curved pipe sections (15) adopt a ring structure, and the two curved pipe sections (15) adopt a centrally symmetrical structure.
2. The battery liquid cold plate water nozzle structure of claim 1, wherein: The transition section (14) is a straight pipe structure, and its orientation is parallel to the liquid cooling base plate (2) of the energy storage battery.
3. The battery liquid cold plate water nozzle structure of claim 1, wherein: The upper end of the curved water tap body (1) is provided with a quick connector insertion port (11) for inserting the quick connector without loosening.
4. The battery liquid cold plate water nozzle structure of claim 3, wherein: The quick connector insertion port (11) is provided with a quick connector mating groove (12) at the connection between the quick connector insertion port (11) and the bend section (15), which is used for assembly and positioning when the bend water nozzle body (1) is mated with the quick connector, and to counteract the backlash force when condensate is injected.
5. The battery liquid cold plate bib structure of claim 1, wherein: The root of the curved water nozzle body (1) is provided with a curved root protrusion ring (13) for positioning in conjunction with the liquid cooling base plate (2) of the energy storage battery, fixing the position of the inlet and outlet coolant water nozzle curved pipe structure, and preventing it from rotating or shifting.
6. The battery liquid cold plate bib structure of claim 5, wherein: The width and height of the convex ring (13) at the root of the bend are both less than 2 mm.