Liquid cooling plate and energy storage box

Abstract

The utility model provides a liquid cooling plate and an energy storage box, the liquid cooling plate comprises a substrate and a runner plate which are arranged in an attached manner, the length direction of the liquid cooling plate is taken as the longitudinal direction, the width direction of the liquid cooling plate is taken as the transverse direction, and the liquid cooling plate comprises a pipeline surface, a flat and straight surface for bearing a heating element and a frame assembly which is arranged around the liquid cooling plate to fix the liquid cooling plate, the reinforcing plates are longitudinally arranged on the pipeline surface at intervals, and the rivet assemblies are used for fixing the reinforcing plates to the pipeline surface; the pipeline surface comprises a runner part which is arranged in a protruding manner and used for circulating a cooling medium, and a fitting part for fitting the base plate and the runner plate to form a seal; the straight surface is the other surface, opposite to the pipeline surface, of the liquid cooling plate; the two transverse ends of the reinforcing plate are fixed to the frame assembly respectively, first protruding parts are arranged at the joints of the two longitudinal sides and the attaching parts, and second protruding parts are arranged on the attaching parts. The rivet assembly penetrates through the first protruding part and the second protruding part and is used for fixing the reinforcing plate to the pipeline surface. The liquid cooling plate and the energy storage box provided by the utility model are good in sealing effect, strong in structural stability and high in safety.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of heat dissipation device manufacturing, especially a liquid cooling plate and energy storage tank. BACKGROUND

[0002] The liquid cooling plate, as an important functional component of the energy storage tank, plays an important role in heat dissipation. The flowing coolant of the liquid cooling plate dissipates heat for the working battery, and thus the air tightness of the liquid cooling plate and the contact area between the liquid cooling plate and the battery affect the heat dissipation safety and operation reliability of the battery. With the demand for lightweight and cost reduction in the new energy field, the frame structure energy storage heat dissipation tank body has become a design scheme favored by the market. While the tank body is lightweight, the support strength requirement of the liquid cooling plate is not reduced, and the current market generally uses a steel frame to improve the strength of the tank body.

[0003] Due to the limitation of the material, the connection between the liquid cooling plate and the support frame of the energy storage heat dissipation tank is usually hard connection. Since the connection points between the liquid cooling plate and the support frame are limited, the middle region of the energy storage tank cannot be hard connected, which weakens the overall connection strength of the energy storage heat dissipation tank, making it difficult to meet the stringent structural strength requirements of the market and affecting the heat dissipation effect of the battery. SUMMARY

[0004] The utility model aims at providing a liquid cooling plate and energy storage tank, which can enhance the structural strength of the liquid cooling plate and improve the air tightness of the liquid cooling plate.

[0005] According to one aspect of the utility model, a liquid cooling plate is provided, which comprises a base plate and a flow channel plate arranged in close contact. The length direction of the liquid cooling plate is the longitudinal direction, and the width direction is the transverse direction. The liquid cooling plate comprises a pipeline surface, a flat surface, a frame assembly, a reinforcing plate, and a rivet assembly. The pipeline surface comprises a flow channel part and a close contact part. The flow channel part is provided as a protrusion to circulate cooling medium. The close contact part is a part of the base plate and the flow channel plate that forms a seal in close contact. The flat surface is the other surface of the liquid cooling plate relative to the pipeline surface. The flat surface is used to carry a heating element. The frame assembly is arranged around the periphery of the liquid cooling plate to fix the liquid cooling plate. The reinforcing plate is arranged longitudinally and spaced apart on the pipeline surface. The reinforcing plate is fixed to the frame assembly at both transverse ends. First protrusions are arranged at the connection between the reinforcing plate and the close contact part on both longitudinal sides of the reinforcing plate. Second protrusions are arranged on the close contact part. The first protrusions and the second protrusions are arranged in a stacked and close contact manner to connect the reinforcing plate and the pipeline surface. The rivet assembly penetrates the first protrusions and the second protrusions to fix the reinforcing plate to the pipeline surface.

[0006] By setting the first protruding part on the reinforcing plate and the second protruding part on the bonding part, the flow channel plate and the reinforcing plate are connected by riveting, which can improve the flatness of the heat element mounting surface of the base plate, ensure the bonding area of the heat element and the liquid cooling plate, and improve the reliability and safety of battery heat dissipation.

[0007] Preferably, the second protruding part forms a cavity with the base plate; the rivet assembly includes a first riveting part and a second riveting part, and the second riveting part is arranged in the cavity.

[0008] The cavity is formed between the second protruding part and the base plate, and the first riveting part connects the first protruding part and the second protruding part, which avoids affecting the air tightness of the liquid cooling plate during the fixing process of the rivet assembly.

[0009] Preferably, the reinforcing plate includes a reinforcing edge arranged transversely and a reinforcing surface; the reinforcing surface protrudes relative to the reinforcing edge; the reinforcing surface includes reinforcing ribs arranged transversely; and the reinforcing ribs are connected with the flow channel part to support the flow channel part.

[0010] Preferably, the reinforcing plate edge includes the first protruding part and a third protruding part, and the first protruding part is bonded with the second protruding part at the reinforcing plate edge; the third protruding part is bonded with the flow channel part; and the third protruding part and the first protruding part are arranged at intervals at the reinforcing plate edge.

[0011] Preferably, the frame assembly includes a first longitudinal beam and a second longitudinal beam arranged along the length direction of the liquid cooling plate, and a first cross beam and a second cross beam arranged along the width direction of the liquid cooling plate.

[0012] Preferably, the bonding part includes a brazing hole arranged on the flow channel plate.

[0013] The brazing hole arranged on the flow channel plate can effectively improve the yield rate during the processing of the liquid cooling plate and improve the production quality of the product.

[0014] Preferably, the reinforcing surface and the reinforcing edge form a step in a staggered manner, the reinforcing surface includes a fixing lug arranged at the transverse ends of the reinforcing plate respectively, and the fixing lug is connected with the first longitudinal beam and the second longitudinal beam respectively.

[0015] Preferably, the first longitudinal beam includes a first step, a second step and a third step arranged in sequence along the longitudinal direction and distributed from right to left in the transverse direction, and the fixing lug is connected and fixed with the step surface of the first step.

[0016] Preferably, the flat surface includes a mounting assembly arranged transversely on the flat surface for fixing the heat element.

[0017] The first protruding part is arranged on the reinforcing plate, the second protruding part is arranged on the fitting part on the pipeline surface, and the cavity is formed between the second protruding part and the base plate, the first protruding part and the second protruding part are riveted through the rivet assembly, the fixed connection of the reinforcing plate and the liquid cooling plate is realized, and the liquid cooling plate is supported. The second riveting part of the riveting assembly is located in the cavity, rivet assembly passes through the base plate to avoid affecting the contact area with the heat generating element, so that the heat dissipation effect can be improved; at the same time, the air tightness of the liquid cooling plate is improved, and the product quality is guaranteed.

[0018] The utility model also provides a kind of energy storage box, including above-mentioned liquid cooling plate, adopt this kind of liquid cooling plate energy storage box, can improve the heat dissipation effect of heat generating element, improve the heat dissipation safety and reliability of energy storage box. BRIEF DESCRIPTION OF DRAWINGS

[0019] The utility model is further described in detail as follows in combination with drawings and specific embodiments:

[0020] Figure 1 For the liquid cooling plate structure schematic diagram provided by the utility model Figure 1 .

[0021] Figure 2 For the liquid cooling plate structure schematic diagram provided by the utility model Figure 2 .

[0022] Figure 3 For the liquid cooling plate structure schematic diagram provided by the utility model Figure 3 .

[0023] Figure 4 For the reinforcing plate structure schematic diagram provided by the utility model.

[0024] Figure 5 For the liquid cooling plate AA1 direction section schematic view provided by the utility model.

[0025] Figure 6 For the liquid cooling plate AA1 direction section local enlarged view provided by the utility model.

[0026] Figure 7 For the connecting piece schematic view provided by the utility model.

[0027] Figure 8 For Figure 1 Local enlarged view.

[0028] BRIEF DESCRIPTION OF DRAWINGS

[0029] 100-liquid cooling plate;

[0030] 11-base plate;12-flow passage plate;

[0031] 20-pipe surface; 21-flow passage part; 22-adhesion part; 221-second protruding part; 2211-second mounting hole; 222-cavity; 223-brazing hole;

[0032] 30-flat surface; 31-mounting assembly;

[0033] 40-frame assembly; 41-first longitudinal beam; 411-first step; 412-second step; 413-third step;

[0034] 42-second longitudinal beam; 43-first cross beam; 44-second cross beam;

[0035] 51-strengthening plate; 511-strengthening rim; 5111-first protruding part; 5111a-first mounting hole; 5112-third protruding part; 512-strengthening surface; 5121-strengthening rib; 513-fixing lug; 514-clamping interface

[0036] 60-riveting assembly; 601-first riveting part; 602-second riveting part DETAILED DESCRIPTION

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only represent some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0038] In order to make the drawing simple, only the parts related to the present application are shown in each drawing, which do not represent the actual structure of the product. In addition, in order to make the drawing simple and easy to understand, in some drawings, only one of the parts with the same structure or function is shown, or only one of them is marked. In this paper, "one" not only means "only one", but also means "more than one".

[0039] It should be further understood that the term "and / or" used in the specification and claims of the present application means any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

[0040] In this article, it is necessary to explain that unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0041] In addition, in the description of the present application, the terms "first", "second" and the like are only used for differentiation and description, and cannot be understood as indicating or implying relative importance.

[0042] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the specific embodiments of the present application will be described below with reference to the drawings. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings and other embodiments according to these drawings without creating any creative labor.

[0043] Referring to Figures 1 to 8 The present embodiment provides an energy storage box, which comprises a liquid cooling plate, a heating element, an electrical component and various fixing devices. The heat dissipation effect of the liquid cooling plate affects the operation safety and use effect of the battery pack. In the energy storage box provided by the present embodiment, the contact surface of the liquid cooling plate and the heating element is guaranteed to improve the heat dissipation efficiency and ensure the quality and reliability of the energy storage box.

[0044] Referring to Figure 2 The liquid cooling plate provided by the present embodiment comprises a substrate 11 and a flow channel plate 12 arranged in close contact with each other. The length direction of the liquid cooling plate is the longitudinal direction, and the width direction is the transverse direction. The liquid cooling plate in the embodiment comprises a pipe surface 20, a flat surface 30, a frame assembly 40, a reinforcing plate 51 and a rivet assembly 60. The pipe surface 20 is an important part for realizing the heat dissipation function of the liquid cooling plate. The pipe surface 20 comprises a flow channel part 21 and a close contact part 22. The flow channel part 21 is arranged as a protruding structure, i.e. the part formed by the flow channel plate 12 and the substrate 11 for flowing, for flowing cooling medium to realize heat dissipation. The close contact part 22 is formed by the substrate 11 and the flow channel plate 12. The close contact part 22 is usually arranged as a sealing structure to enhance the air tightness of the liquid cooling plate.

[0045] The flat surface 30 is the other surface of the liquid cooling plate relative to the pipe surface 20, which is usually used to carry the heating element. Generally, the flat surface 30 is in close contact with the heating element, and the heating element exchanges heat with the flat surface 30, which is cooled by the cooling medium in the flow channel part 21 of the pipe surface 20, thereby dissipating heat from the heating element. Referring to Figure 3In a preferred embodiment, in order to realize precise connection of the flow channel plate 12 and the base plate 11 and avoid leakage of the cooling medium in the liquid cooling plate during use, the flow channel plate 12 and the base plate 11 are connected by brazing, and therefore the brazing hole 223 is arranged on the bonding portion 22, and the brazing hole 223 is formed as a through hole on the flow channel plate 12. By using the brazing hole 223, the unnecessary gap between the flow channel plate 12 and the base plate 11 can be reduced during brazing of the flow channel plate 12 and the base plate 11 to form the pipeline surface 20 and the flat surface 30, and the yield rate during processing of the liquid cooling plate is further improved, and the production quality of the product is improved.

[0046] The frame assembly 40 is arranged around the liquid cooling plate to fix the liquid cooling plate and increase the structural strength of the liquid cooling plate to prevent deformation of the liquid cooling plate when the liquid cooling plate is connected to the heat generating element. The frame assembly 40 includes the first longitudinal beam 41 and the second longitudinal beam 42 arranged longitudinally along the length direction of the liquid cooling plate, and the first transverse beam 43 and the second transverse beam 44 arranged along the width direction of the liquid cooling plate. The two ends of the first longitudinal beam 41, the second longitudinal beam 42, the first transverse beam 43 and the second transverse beam 44 are respectively connected to each other to fix the four sides of the liquid cooling plate and increase the structural strength of the liquid cooling plate to improve the reliability of the liquid cooling plate when supporting the heat generating element.

[0047] Referring to Figure 4 , Figure 8The reinforcing plate 51 is arranged longitudinally along the frame assembly 40 and on the side of the pipe surface 20, further supporting the liquid cooling plate and improving the support strength of the liquid cooling plate to the heat generating elements. The longitudinal sides of the reinforcing plate 51 are connected to the liquid cooling plate on the side of the pipe surface 20 and provided with first protrusions 5111, and the second protrusions 221 are provided on the bonding portion 22 to form cavities 222 between the second protrusions 221 and the substrate 11. The first protrusions 5111 and the second protrusions 221 are overlapped and connected, and the rivet assembly 60 penetrates the first protrusions 5111 and the second protrusions 221 to connect the reinforcing plate 51 and the pipe surface 20, i.e. to fix the reinforcing plate 51 and the flow channel plate 12. In an embodiment, the reinforcing plate 51 includes a reinforcing edge 511 arranged transversely and a reinforcing surface 512 protruding relative to the reinforcing edge 511, and the reinforcing surface 512 is arranged parallel to the flow channel plate 12. A step is formed between the reinforcing surface 512 and the reinforcing edge 511, and the first protrusions 5111 are arranged on the reinforcing edge 511. Further, the reinforcing surface 512 is further provided with reinforcing ribs 5121 arranged transversely, wherein the reinforcing ribs 5121 are grooves relative to the reinforcing surface 512, and the grooves are connected to the pipe surface 20 and the flow channel portion 21 on the pipe surface 20 to support the flow channel portion 21, thereby increasing the contact area between the reinforcing plate 51 and the flow channel plate 12 and improving the structural strength of the liquid cooling plate. In an alternative embodiment, the reinforcing plate 51 is further provided with third protrusions 5112 arranged spaced apart from the first protrusions 5111, and the third protrusions 5112 are arranged to be overlapped with the flow channel portion 21, thereby increasing the connection and bonding area between the reinforcing plate 51 and the flow channel plate 12, increasing the structural stability of the reinforcing plate 51, and further improving the structural strength and reliability of the product. In this embodiment, in order to improve the air tightness of the product and simplify the installation difficulty of the reinforcing plate 51 and the pipe surface 20, the first protrusions 5111 are provided with first mounting holes 5111a, and the second protrusions 221 are provided with second mounting holes 2211. The rivet assembly 60 penetrates the first mounting holes 5111a and the second mounting holes 2211 to connect the flow channel plate 12 and the reinforcing plate 51, so as to fix the flow channel plate 12 and the reinforcing plate 51 by the rivet assembly 60, thereby improving the air tightness and quality of the product.

[0048] Referring to Figures 1 to 6Fixing ears 513 are provided at both ends of the reinforcing surface 512 in the lateral direction. Specifically, the fixing ears 513 are located on both sides of the reinforcing plate 51 in the lateral direction and are connected to the first longitudinal beam 41 and the second longitudinal beam 42, respectively. Taking the connection method of the fixing ears 513 on the first longitudinal beam 41 as an example, the first longitudinal beam 41 includes a first step 411, a second step 412, and a third step 413, which are raised sequentially from right to left. The fixing ears 513 are located between the first step 411 and the second step 412, and are fixedly connected to the step surface of the first step 411, further increasing the connection stability between the reinforcing plate 51 and the frame assembly 40 and improving the support reliability of the heating element. A stepped locking interface 514 is also provided between the fixing ears 513 and the edge of the reinforcing plate 51. During the fixing process of the reinforcing plate 51, the connection between the reinforcing plate 51 and the first longitudinal beam 41 has a higher degree of fit and a more stable connection.

[0049] For details, see Figure 6 , Figure 7 The rivet assembly 60 includes a first riveting portion 601 and a second riveting portion 602. The first riveting portion 601 fixes the first protrusion 5111 and the second protrusion 221. The second riveting portion 602 is placed in the cavity 222 between the second protrusion 221 and the substrate 11 and supports the cavity 222. This riveting method improves the airtightness of the liquid cooling plate and prevents refrigerant leakage. At the same time, since the second riveting portion 602 is located in the cavity 222 formed between the second protrusion 221 and the substrate 11, the rivet assembly 60 is prevented from passing through the substrate 11 and affecting the contact area between the substrate 11 and the heating element.

[0050] In one optional embodiment, to increase heat exchange efficiency, the heating element is positioned on a flat surface 30. Therefore, a transverse mounting assembly 31 is provided on this flat surface to fix the heating element. The mounting assembly 31 is arranged parallel to the first crossbeam 43 and the second crossbeam 44, and a gap is provided between the mounting assemblies 31. The heating element is fixed at the gap to increase the contact area between the heating element and the liquid cooling plate, thereby achieving heat dissipation. This installation method is simple and convenient, and can increase the heat exchange contact area, further improving heat exchange efficiency. At the same time, because the flat surface 30 has high flatness and there are no unnecessary connecting devices, the safety of product heat dissipation can be improved.

[0051] The first protruding part 5111 and the second protruding part 221 are connected by riveting, that is, the flow channel plate 12 and the reinforcing plate 51 are connected by riveting, the flatness of the flat surface 30 for installing the heating element can be improved, the area of the heating element and the liquid cooling plate is guaranteed, and the heat dissipation reliability and safety are improved. Therefore, the liquid cooling plate provided by the utility model can form a cavity 222 with the base plate 11 in cooperation with the second protruding part 221, the second riveting part 602 of the rivet assembly 60 is arranged in the cavity 222 in the process of fastening the pipeline surface 20 and the reinforcing plate 51, the base plate 11 is prevented from penetrating, the contact area of the heating element and the flat surface 30 is affected, and the air tightness of the refrigerant transmission can be improved.

[0052] The liquid cooling plate and the energy storage tank provided by the embodiment have good heat dissipation effect and high reliability. The energy storage tank adopting the liquid cooling plate can improve the heat dissipation effect of the heating element and improve the heat dissipation safety and reliability of the energy storage tank.

[0053] It is obvious for those skilled in the art that various modifications and changes can be made to the above exemplary embodiments of the utility model without departing from the spirit and scope of the utility model. Therefore, the utility model aims to cover the modifications and changes of the utility model falling within the scope of the appended claims and equivalent technical solutions.

Claims

1. A liquid cooling plate comprising a base plate and a flow channel plate arranged in close contact, in a longitudinal direction of the liquid cooling plate being a length direction and in a width direction being a width direction, characterized by, The liquid cooling plate comprises: a pipe surface, the pipe surface comprises a flow channel part and a fitting part, the flow channel part is provided for the flow of cooling medium, and the fitting part is a part for sealing the fitting of the substrate and the flow channel plate; a flat surface, the flat surface is the other surface of the liquid cooling plate relative to the pipe surface, and the flat surface is used to carry a heating element; a frame assembly, the frame assembly is arranged around the liquid cooling plate to fix the liquid cooling plate; a reinforcing plate, the reinforcing plate is arranged longitudinally and spaced apart on the pipe surface, and the reinforcing plate is fixed to the frame assembly at both ends in the transverse direction; the first protruding part is arranged at the connection between the reinforcing plate and the fitting part, the fitting part is provided with a second protruding part, the first protruding part and the second protruding part are arranged in a laminated and fitted manner to connect the reinforcing plate and the pipe surface; a rivet assembly, the rivet assembly penetrates the first protruding part and the second protruding part to fix the reinforcing plate to the pipe surface.

2. The liquid cold plate of claim 1, wherein, The second protruding part forms a cavity with the substrate; the rivet assembly comprises a first riveting part and a second riveting part, and the second riveting part is arranged in the cavity.

3. The liquid cold plate of claim 2, wherein, The reinforcing plate comprises a reinforcing edge arranged in the transverse direction and a reinforcing surface; the reinforcing surface protrudes relative to the reinforcing edge; the reinforcing surface comprises reinforcing ribs arranged in the transverse direction; the reinforcing ribs are connected with the flow channel part to support the flow channel part.

4. The liquid cold plate of claim 3, wherein, The reinforcing plate edge comprises the first protruding part and a third protruding part, and the first protruding part is fitted with the second protruding part at the reinforcing plate edge; the third protruding part is fitted with the flow channel part; the third protruding part and the first protruding part are arranged in the reinforcing plate edge.

5. The liquid cold plate of claim 4, wherein, The frame assembly comprises a first longitudinal beam, a second longitudinal beam arranged in the length direction of the liquid cooling plate, and a first transverse beam and a second transverse beam arranged in the width direction of the liquid cooling plate.

6. The liquid cold plate of claim 5, wherein, The fitting part comprises a brazing hole arranged on the flow channel plate.

7. The liquid cold plate of claim 6, wherein, The reinforcing surface and the reinforcing edge form a step; the reinforcing surface comprises a fixing lug arranged at both ends of the reinforcing plate in the transverse direction, and the fixing lug is connected with the first longitudinal beam and the second longitudinal beam.

8. The liquid cold plate of claim 7, wherein, The first longitudinal beam comprises a first step, a second step and a third step arranged in the transverse direction from right to left in sequence along the longitudinal direction, and the fixing lug is connected and fixed with the step surface of the first step.

9. The liquid cold plate of claim 1, wherein, The flat surface comprises a mounting assembly arranged in the transverse direction on the flat surface for fixing a heating element.

10. An energy storage tank characterized by, The liquid cooling plate comprises the liquid cooling plate as claimed in claims 1-9.

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