A vertical direction convection liquid cooling plate and battery box

Abstract

This utility model relates to the field of battery technology and discloses a vertically convection liquid cooling plate and battery box, including a box frame and a liquid cooling module. The liquid cooling module includes a liquid cooling plate and a flow divider plate. The surface of the liquid cooling plate is provided with raised bands, and the interior is provided with a through-flow channel. The water inlet and water outlet are located at both ends of the liquid cooling plate, and the through-flow channel and several water outlets are located between any adjacent raised bands. The flow divider plate includes a water inlet pipe, a main water inlet channel, and a water inlet dispersion channel. The main water inlet channel and the water inlet dispersion channel are both arranged laterally inside the flow divider plate and are connected by holes. This liquid cooling plate design can effectively improve the heat dissipation uniformity of different parts of the battery pack and quickly remove the heat generated by the battery. The battery box structure frame designed by this liquid cooling plate has a unique design, high positioning accuracy, and a solid structure after welding, with high stability and strength.

Description

Technical Field

[0001] This utility model patent belongs to the field of battery technology, specifically relating to a vertically convection liquid cooling plate and battery box. Background Technology

[0002] With the rapid development of new energy technologies, batteries, as core energy storage and conversion units, have received significant attention for their performance and safety. Lithium-ion batteries, due to their significant advantages such as high energy density, low self-discharge rate, long cycle life, and lack of memory effect, are widely used in electric vehicles, energy storage systems, and many other fields. However, lithium batteries are extremely sensitive to temperature conditions, which has become a key factor limiting their performance and safety.

[0003] Common cooling plate designs have relatively regular and uniform shapes. The cooling medium flows inside, but the heat transfer effect is limited. As the cooling medium flows in the channel, the fluid temperature near the channel wall gradually increases, which increases the resistance to convective heat transfer and hinders heat transfer. This results in significant differences in heat dissipation at different locations of the battery, failing to meet the battery's strict requirements for heat dissipation uniformity. Utility Model Content

[0004] The purpose of this invention is to design a vertically oriented convection liquid cooling plate and battery box, in which the coolant can flow from bottom to top inside the battery box and carry away heat.

[0005] Based on the above concept, the technical solution adopted by this utility model is as follows:

[0006] A vertically convection liquid-cooled plate and battery box include a box frame and a liquid-cooling module. The liquid-cooling module includes a liquid-cooled plate and a flow divider plate. The surface of the liquid-cooled plate is provided with raised bands, and the interior is provided with a through-flow channel. The two ends of the liquid-cooled plate are provided with water inlets and water outlets. The through-flow channel and several water outlets are arranged between any adjacent raised bands. The flow divider plate includes a water inlet pipe, a main water inlet channel, and a water inlet dispersion channel. The main water inlet channel and the water inlet dispersion channel are both arranged laterally inside the flow divider plate and are connected by holes.

[0007] Preferably, the bottom of the diverter plate is welded to one end of the water inlet of the liquid cooling plate, the water inlet dispersion channel is attached above the water inlet, and the water inlet pipe is connected to the water inlet pipe on the front bulkhead.

[0008] Optionally, the raised band may include straight strips, curved strips, and other irregular shapes.

[0009] Preferably, the housing frame includes a surrounding frame and a housing cover. A pressure relief valve is provided on the top of the housing cover. The housing cover is welded to the top of the surrounding frame. The bottom of the surrounding frame and the four sides of the liquid cooling module are welded together to form a sealed battery housing structure, in which the battery and coolant are sealed inside the battery housing.

[0010] Preferably, the enclosure includes a front panel, a rear panel, and left and right panels. The outer surface of the front panel is provided with a water inlet pipe, a water outlet pipe, a grounding point, an installation point, and an external wiring hole. The outer surfaces of the left and right panels are provided with lifting holes. The junction of the front panel and the left and right panels includes a mortise and tenon joint structure.

[0011] Preferably, the grounding point is connected to the battery box casing and the ground.

[0012] Preferably, the external wiring hole is connected to an external circuit, and its output functions include power supply positive and negative terminals, temperature signals, and other necessary output signals.

[0013] Preferably, the mounting points include two or more and are distributed on the left and right sides of the front bulkhead, with internal rivet nuts and fixed to the front bulkhead by welding.

[0014] Preferably, the lifting hole includes two parts: a rectangle and a semicircle. The rectangular opening serves as a limiting point, while the semicircle is the actual point of action for the lifting device. Furthermore, each of the left and right side panels includes two or more lifting holes.

[0015] Preferably, the liquid cooling plate is fixedly connected to mounting beams at both ends. The mounting beams are provided with threaded holes and opening slots. The length and width of the opening slots are consistent with the size of the water outlet. The battery cell module is fixed in the battery box through the threaded holes.

[0016] Preferably, the frame is fixed by a mortise and tenon joint structure consisting of a front panel, a rear panel, and left and right panels, which are then welded together to form a whole.

[0017] The beneficial effects of this utility model are as follows:

[0018] 1. The present invention relates to a vertically convection liquid cooling plate and battery box. By opening holes in the liquid cooling plate to achieve bottom-up convection, it can effectively improve the heat dissipation uniformity of different parts of the battery pack. Convection can also enhance the heat exchange efficiency between the coolant and the battery pack, quickly remove the heat generated by the battery, improve the heat dissipation effect, ensure that the battery operates in a more stable temperature range, and improve the battery performance and life.

[0019] 2. The present invention relates to a vertically convection liquid cooling plate and battery box, which is a frame structure spliced ​​together by four frames on the front, back, left and right sides. The four joints of the box body adopt mortise and tenon inlay structure and welding. This unique frame design has high positioning accuracy and the structure is solid after welding, with high stability and strength. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall assembly of this utility model;

[0021] Figure 2 This is an assembly drawing of the liquid cooling module of this utility model;

[0022] Figure 3 This is a structural diagram of the liquid cooling plate of this utility model;

[0023] Figure 4 This is a structural diagram of the flow divider of this utility model;

[0024] Figure 5 This is a structural diagram of the mounting beam of this utility model;

[0025] Figure 6 This is an assembly drawing of the frame of this utility model;

[0026] Figure 7 This is a structural diagram of the front and rear panels of this utility model;

[0027] Figure 8 This is a structural diagram of the left and right side panels of this utility model;

[0028] Figure 9 This is a sectional view of the mortise and tenon inlay structure of this utility model;

[0029] In the picture:

[0030] Box frame 1, enclosure 11, front enclosure 110, rear enclosure 111, water inlet pipe 112, water outlet pipe 113, grounding point 114, installation point 115, external wiring hole 116, left and right enclosures 117, hoisting hole 118, tenon and mortise inlay structure 119, box cover 12, pressure relief valve 121.

[0031] Liquid cooling module 2, liquid cooling plate 21, raised strip 211, water inlet 212, water outlet 213, flow channel 214, flow divider 22, water inlet pipe 221, main water inlet channel 222, water inlet dispersion channel 223;

[0032] Mounting beam 23, threaded hole 231 and opening slot 232. Detailed Implementation

[0033] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0034] like Figures 1 to 9As shown, this utility model includes a box frame 1 and a liquid cooling module 2. The liquid cooling module 2 includes a liquid cooling plate 21 and a flow divider 22. The surface of the liquid cooling plate 21 is provided with a raised band 211, and the interior is also provided with a through-flow channel 214. The two ends of the liquid cooling plate 21 are provided with a water inlet 212 and a water outlet 213. The through-flow channel 214 and a plurality of water outlets 213 are arranged between any adjacent raised bands 211. The flow divider 22 includes a water inlet pipe 221, a main water inlet channel 222 and a water inlet dispersion channel 223. The main water inlet channel 222 and the water inlet dispersion channel 223 are both arranged laterally inside the flow divider 22, and the main water inlet channel 222 and the water inlet dispersion channel 223 are connected by holes.

[0035] In this embodiment, the raised strips 211 on the surface of the liquid cooling plate 21 are used to support the battery cells placed on the liquid cooling plate. The concave surfaces between any adjacent raised strips 211 form channels for the flow of coolant, and the coolant exhibits a flow state of circulating trajectory from bottom to top.

[0036] In this embodiment, the bottom of the diversion plate 22 is welded to one end of the water inlet 212 of the liquid cooling plate 21, and the water inlet dispersion channel 223 is attached above the water inlet 212. The liquid passes through the water inlet pipe 221 and the main water inlet channel 222, is distributed into the water inlet dispersion channel 223, and then enters the interior of the liquid cooling plate 21 through the water inlet 212. The coolant flows out from the bottom upward through several water outlets 213 and converges in the water outlet pipe 113 to carry away the heat.

[0037] In this embodiment, the housing frame 1 includes a surrounding frame 11 and a housing cover 12. A pressure relief valve 121 is provided on the top of the housing cover 12. When the pressure inside the battery box exceeds a set threshold, the pressure relief valve automatically opens to regulate the internal pressure. The housing cover 12 is welded to the top of the surrounding frame 11, and the bottom of the surrounding frame 11 is welded to the four sides of the liquid cooling module 2 to form a sealed battery box structure, in which the battery and coolant are sealed inside the battery box.

[0038] In this embodiment, the frame 11 includes a front panel 110, a rear panel 111, and left and right panels 117. The outer surface of the front panel 110 is provided with a water inlet pipe 112, a water outlet pipe 113, a grounding point 114, an installation point 115, and an external wiring hole 116. There are two installation points 115 on the left and right sides, which are used to fix the battery box on the battery cluster frame. The installation point 115 is made of aluminum profile with internal rivet nuts. The installation point 115 is welded to the battery box to form an integral whole. The outer surface of the left and right panels 117 is provided with a lifting hole 118. The lifting hole 118 is designed with a limit structure. The rectangular opening is for limiting, and the semi-circular part is the actual action point of the lifting tool, which can effectively carry out lifting and transportation. The junction of the front panel 110 and the left and right panels 117 is inlaid with a tenon and mortise structure 119 and then welded into a whole, which has accurate positioning and good sealing performance.

[0039] In this embodiment, the liquid cooling plate 21 is fixedly connected to the mounting beam 23 at both ends. The mounting beam 23 is provided with threaded holes 231 and opening slots 232. The battery cell module is fixed on the mounting beam 23 through the threaded holes 231. The length and width of the opening slots 232 are consistent with the size of the water outlet 213.

[0040] Detailed implementation methods and principles:

[0041] like Figures 1 to 9 As shown, the battery cell module is placed on the liquid cooling plate 21. The raised strip 211 on the surface of the liquid cooling plate 21 is used to support the battery cell placed on the liquid cooling plate. The battery cell module and the liquid cooling plate 21 are fixedly connected at both ends by the mounting beam 23 and fixedly connected by bolts to achieve the battery cell fixing effect. The front panel 110, the rear panel 111 and the left and right panels 117 are inlaid together by the tenon structure 119 at the bottom and then welded to the liquid cooling plate 21 to form a whole. The top of the box cover 12 and the frame 11 are fixedly connected to form a sealed battery box structure. The mounting point 115 on the outside of the battery box structure is used to fix the battery box. The lifting hole 118 can facilitate lifting and transportation. The pressure relief valve 121 can adjust the internal pressure. The external wiring hole 116 is used for output battery function. The grounding point 114 is used to connect to the ground to eliminate static electricity and ensure safety.

[0042] The coolant is introduced through the water inlet pipe 112 on the housing frame 1 and the water inlet pipe 221 of the liquid cooling plate 21. The coolant is distributed to each water inlet 212 through the diverter plate 22, and then flows out from several water outlets 213 after passing through the flow channel 214. The coolant forms a flow channel in the concave surface between the raised bands 211, presenting a flow state of circulation from bottom to top, and finally converges in the water outlet pipe 113, carrying away the absorbed heat.

[0043] As is known from common technical knowledge, this utility model can be implemented through other embodiments that do not depart from its spirit or essential characteristics. Therefore, the disclosed embodiments described above are merely illustrative in all respects and are not the only ones. All modifications within the scope of this utility model or its equivalents are included in this utility model.

Claims

1. A vertically directionally convective liquid cooling plate and battery box, characterized by, It includes a housing frame (1) and a liquid cooling module (2); The liquid cooling module (2) includes a liquid cooling plate (21) and a flow divider (22). The surface of the liquid cooling plate (21) is provided with a raised band (211), and the interior is provided with a through flow channel (214). The two ends of the liquid cooling plate (21) are provided with an inlet (212) and an outlet (213). The through flow channel (214) and a plurality of outlets (213) are provided between any adjacent raised bands (211). The diversion plate (22) includes an inlet pipe (221), an inlet main channel (222), and an inlet dispersion channel (223). The inlet main channel (222) and the inlet dispersion channel (223) are both arranged horizontally inside the diversion plate (22), and the inlet main channel (222) and the inlet dispersion channel (223) are connected by holes.

2. The vertically convection liquid cooling plate and battery box according to claim 1, characterized in that, The bottom of the diversion plate (22) is welded to one end of the water inlet (212) of the liquid cooling plate (21), and the water inlet dispersion channel (223) is attached above the water inlet (212).

3. The vertically convection liquid cooling plate and battery box according to claim 1, characterized in that, The raised band (211) includes straight strips, curved shapes, and other irregular shapes.

4. The vertically convection liquid cooling plate and battery box according to claim 1, characterized in that, The housing frame (1) includes a surrounding frame (11) and a housing cover (12). A pressure relief valve (121) is provided above the housing cover (12). The housing cover (12) is connected to the top of the surrounding frame (11) by welding. The bottom of the surrounding frame (11) and the four sides of the liquid cooling module (2) are connected by welding to form a sealed battery housing structure. The battery and coolant are sealed inside the battery housing.

5. The vertically convection liquid cooling plate and battery box according to claim 4, characterized in that, The frame (11) includes a front panel (110), a rear panel (111), and left and right panels (117). The outer surface of the front panel (110) is provided with an inlet pipe (112), an outlet pipe (113), a grounding point (114), an installation point (115), and an external wiring hole (116). Each of the left and right panels (117) is provided with two lifting holes (118). The junctions of the front panel (110), the rear panel (111), and the left and right panels (117) are inlaid with a mortise and tenon structure (119) and then welded into a whole.

6. A vertically convection liquid cooling plate and battery box according to claim 5, characterized in that, There are two mounting points (115) on the left and right, with internal rivet nuts. The mounting points (115) are welded to the battery box to form a whole. The grounding point (114) is connected to the ground. The external wiring hole (116) is connected to the external circuit.

7. The vertically convection liquid cooling plate and battery box according to claim 1, characterized in that, The liquid cooling plate (21) is fixedly connected to the mounting beam (23) at both ends. The mounting beam (23) is provided with threaded holes (231) and opening grooves (232). The length and width of the opening grooves (232) are consistent with the size of the water outlet (213).

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