A two-layer stacking structure of steel modules

Abstract

The present invention discloses a steel module two-layer stacking structure, comprising a module stacking structure and a liquid cooling plate installed inside the module stacking structure, wherein a plurality of limiting mechanisms are provided inside the module stacking structure, and a limiting clamping plate is fixedly installed on the internal top of the limiting mechanism, the module stacking structure comprises a battery pack lower shell, a plurality of first-layer modules are provided inside the battery pack lower shell, and a plurality of module mounting holes are symmetrically opened on both sides of the first-layer module, and the mounting holes are through holes, wherein the battery pack lower shell is provided with threads corresponding to the mounting positions, and the mounting bolts pass through the module mounting holes and are threadedly connected to the lower shell, and a cold plate support beam is provided on the top of the first-layer module, wherein assembly mounting holes are opened on both sides of the middle portion of the cold plate support beam, the battery pack lower shell is used to place the first-layer module, and the first-layer module is fixed by using bolts through the module mounting holes, and the first-layer module and the second-layer module are supported by the cold plate support beam and the module fixing beam of the battery pack lower shell.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and in particular to a two-layer stacking structure of steel modules. Background Art

[0002] The two-layer stacking of modules is a difficult point in the design of new energy vehicle battery pack assembly solutions. In the design of the two-layer stacking solution, key factors such as strength, stiffness, stability and durability need to be considered. Among them, strength refers to the maximum stress that the two-layer stacking solution can withstand when it is under load, stiffness refers to the deformation of the two-layer stacking solution when it is under load, stability refers to the stability of the two-layer stacking solution when it is under load, and durability refers to the performance maintenance ability of the two-layer stacking solution during its service life.

[0003] Publication No. CN 211428246 U discloses a double-layer battery module. By providing a first through-hole and a second through-hole on a bracket, a first threaded hole and a second threaded hole on a base, a first through-hole and a second through-hole on a first-layer battery module, and a third through-hole on a second-layer battery module, the bracket and the first-layer battery module can be fixed to the base by a first bolt, thereby ensuring the connection strength of the first-layer battery module, the bracket, and the base. The second-layer battery module, the bracket, and the first-layer battery module can then be fixed to the base by a second bolt, and the second-layer battery module can be superimposed and fixed on the first-layer battery module to ensure the structural strength of the double-layer battery module. However, this patent still has the following problems in actual use:

[0004] Although the double-layer battery module fixes the bracket and the first-layer battery module to the base through the first bolt, ensuring the connection strength of the first-layer battery module, the bracket and the base, it is impossible to limit the battery module on the bracket during installation, resulting in difficulty in quickly and accurately positioning the battery module during installation. As a result, it is difficult to quickly install the bolts into the through holes when installing the bolts, affecting the efficiency of battery module installation. At the same time, when installing the bolts, the inability to accurately and quickly install the bolts will cause certain wear on the through holes, affecting the stability of the bolt installation.

[0005] Therefore, a two-layer stacking structure of steel modules is proposed to solve the above problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a two-layer stacking structure of steel modules to solve the problem proposed in the above background technology that although the double-layer battery module is fixed to the base with the first bolt to fix the bracket and the first layer battery module, ensuring the connection strength of the first layer battery module, the bracket and the base, the battery module on the bracket cannot be limited during installation, resulting in difficulty in quickly and accurately positioning the battery module during installation, and difficulty in quickly installing the bolts into the through holes when installing the bolts, affecting the efficiency of the battery module installation. At the same time, when installing the bolts, the inability to accurately and quickly install the bolts will cause certain wear on the through holes, affecting the stability of the bolt installation.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solution: a steel module two-layer stacking structure, comprising a module stacking structure, and a liquid cooling plate installed inside the module stacking structure;

[0008] A plurality of limiting mechanisms are provided inside the module stacking structure, and a limiting clamping plate is fixedly installed on the top of the limiting mechanism;

[0009] Also includes:

[0010] The module stacking structure includes a battery pack lower shell, wherein a plurality of modules of a first layer are arranged inside the battery pack lower shell, and a plurality of module mounting holes are symmetrically opened on both sides of the first layer of modules;

[0011] The fixing bolts of the first layer modules are threadedly connected to the lower shell of the battery pack through the module mounting holes, and a cold plate support beam is provided on the top of the first layer module;

[0012] Among them, assembly mounting holes are opened on both sides of the middle part of the cold plate support beam, and the assembly mounting holes are connected to the module limiting plates on both sides of the limiting mechanism through the support beam fixing bolts.

[0013] Preferably, module fixing beams are symmetrically installed at both ends of the cold plate support beam, and fixed supports are fixedly installed at the top center position and both sides of the two module fixing beams. A first fixing hole is opened on one side of the interior of the fixing support, and the first fixing hole is a through hole. Cold plate positioning pins are symmetrically installed on one side of the top of the module fixing beam.

[0014] Preferably, a second fixing hole is provided on the side of the fixed support away from the first fixing hole, and the second fixing hole is a threaded hole. The fixing bolt of the cold plate support beam passes through the first fixing hole and is threadedly connected to the module limiting plates on both sides of the limiting mechanism. The liquid cooling plate is arranged on the top of the cold plate support beam, and a two-layer module is arranged on the top of the liquid cooling plate.

[0015] Preferably, the second layer module fixing bolts pass through the through holes at both ends of the second layer module and are threadedly connected to the second fixing holes of the cold plate support beam, and the first layer module fixing bolts pass through the through holes at both ends of the first layer module and are threadedly connected to the lower shell of the battery pack.

[0016] Preferably, the limiting mechanism includes a module limiting plate, which is fixedly installed inside the lower shell of the battery pack. A plurality of limiting fixing holes are opened on the top of the module limiting plate, and the limiting fixing holes are threadedly connected to the cold plate support beam fixing bolts. Connecting blocks are fixedly installed at both ends of the two module limiting plates.

[0017] Preferably, a first rotating support is fixedly installed on the top of the connecting block, and a first limiting rotating rod is rotatably connected to the top of the first limiting rotating rod. A limiting groove is provided on one side of the interior of the first limiting groove, and a limiting sliding rod is fixedly installed inside the limiting groove. The outer side of the limiting sliding rod is slidably connected to a limiting sliding sleeve.

[0018] Preferably, the bottom of the limiting sliding sleeve is fixedly connected to the limiting spring, the outer side of the limiting sliding sleeve is fixedly installed with a second rotating support, the top of the second rotating support is rotatably connected to the second limiting rotating rod, the top of the second limiting rotating rod is rotatably connected to the third rotating support, the top of the third rotating support is fixedly installed with a limiting support plate, the top of the first limiting rotating rod is rotatably connected to the fourth rotating support, and the limiting clamping plate is fixedly installed on the outer side of the fourth rotating support.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: the two-layer stacking structure of steel modules utilizes the lower shell of the battery pack to place the first-layer modules, and fixes the first-layer modules by passing the first-layer module fixing bolts through the module mounting holes, supports the first-layer modules and the second-layer modules by the cold plate support beam and the module fixing beam, and clamps and limits the two sides of the first-layer modules by the limiting clamping plate, thereby achieving precise positioning of the first-layer modules, facilitating the rapid installation of the first-layer module fixing bolts, and improving the efficiency of module stacking installation. The specific contents are as follows:

[0020] 1. By setting up a module stacking structure, not only can the lower shell of the battery pack be used to place the first layer of modules, but the first layer of modules can also be fixed through the first layer module fixing bolts inside the module mounting holes. The first and second layer modules are supported by the cold plate support beams and module fixing beams. The liquid cold plate can be limited by the cold plate positioning pins. The support beam fixing bolts and fixing beam fixing bolts can achieve stable support for the cold plate support beam and module fixing beam, thereby improving the stability of the two-layer stacking of battery modules.

[0021] 2. By setting up a limiting mechanism, not only can the module limiting plate be used to achieve uniform separation of a layer of modules, but also when a layer of modules is placed inside the lower shell of the battery pack, the limiting support plate is pressed down by the layer of modules, so that the limiting support plate drives the third rotating support, the second limiting rotating rod and the second rotating support to descend, so that the second rotating support drives the limiting sliding sleeve to slide on the outside of the limiting sliding rod and squeeze the limiting spring. Under the action of the first rotating support, the first limiting rotating rod drives the fourth rotating support and the limiting clamping plate to rotate, so that a layer of modules can be supported by the limiting support plate, and the two sides of the layer of modules can be clamped and limited by the limiting clamping plate, so as to realize precise positioning of the layer of modules, facilitate the rapid installation of the fixing bolts of the first layer of modules, and improve the efficiency of module stacking installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the three-dimensional structure of the module stacking structure in the present invention;

[0024] Figure 3 This is a schematic diagram of the three-dimensional structure of the cold plate support beam and assembly mounting hole in the present invention;

[0025] Figure 4 This is a schematic diagram of the three-dimensional structure of the module fixing beam in the present invention;

[0026] Figure 5 Schematic diagram of the three-dimensional structure of the limiting mechanism in the present invention;

[0027] Figure 6 Schematic diagram of the three-dimensional cross-sectional structure of the first position-limiting rotation rod in the present invention.

[0028] In the figure: 1. Module stacking structure; 101. Battery pack lower shell; 102. First-layer module; 103. Module mounting hole; 104. First-layer module fixing bolt; 105. Cold plate support beam; 106. Assembly mounting hole; 107. Support beam fixing bolt; 108. Module fixing beam; 109. Fixing support; 110. First fixing hole; 111. Cold plate positioning pin; 112. Second fixing hole; 113. Fixing bolt for fixing beam; 114. Liquid cooling plate; 115. Second-layer module; 116. Second layer module fixing bolts; 2. Limiting mechanism; 201. Module limiting plate; 202. Limiting fixing hole; 203. Connecting block; 204. First rotating support; 205. First limiting rotating rod; 206. Limiting slide groove; 207. Limiting sliding rod; 208. Limiting sliding sleeve; 209. Limiting spring; 210. Second rotating support; 211. Second limiting rotating rod; 212. Third rotating support; 213. Fourth rotating support; 214. Limiting support plate; 215. Limiting clamping plate. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0030] See also Figures 1-6The present invention provides a technical solution: a steel module two-layer stacking structure, including a module stacking structure 1, and a liquid cooling plate 114 installed inside the module stacking structure 1, a plurality of limiting mechanisms 2 are provided inside the module stacking structure 1, and a limiting clamping plate 215 is fixedly installed on the top of the limiting mechanism 2, the module stacking structure 1 includes a battery pack lower shell 101, a plurality of first-layer modules 102 are provided inside the battery pack lower shell 101, and a plurality of module mounting holes 103 are symmetrically opened on both sides of the first-layer module 102, wherein the first-layer module fixing bolts 104 pass through the module mounting holes 103 and are threaded with the battery pack lower shell 101. The top of the first layer of modules 102 is provided with a cold plate support beam 105, wherein assembly mounting holes 106 are provided on both sides of the middle of the cold plate support beam 105, and the support beam fixing bolts 107 pass through the assembly mounting holes 106 and are threadedly connected to the module limiting plate 201. Module fixing beams 108 are symmetrically installed at both ends of the cold plate support beam 105, and fixed supports 109 are fixedly installed at the top center position and both sides of the two module fixing beams 108. A first fixing hole 110 is provided on one side of the interior of the fixed support 109, and the first fixing hole 110 is a through hole. A cold plate positioning pin 111 is symmetrically installed on one side of the top of the module fixing beam 108. A second fixing hole 112 is provided on one side of the seat 109 away from the first fixing hole 110. The second fixing hole 112 is a threaded hole. The fixing beam fixing bolt 113 passes through the first fixing hole 110 and is threadedly connected to the module limiting plate 201. The liquid cooling plate 114 is arranged on the top of the cold plate support beam 105. A second layer module 115 is provided on the top of the liquid cooling plate 114. Both ends of the second layer module 115 are threadedly connected with a plurality of second module fixing bolts 116. The second module fixing bolts 116 are threadedly connected to the module fixing beam 108 through the second fixing hole 112. The first layer module fixing bolts 104 are threadedly connected to the lower shell 101 of the battery pack. The lower shell 101 of the battery pack places the first layer module 102 and fixes the first layer module 102 through the first layer module fixing bolts 104 inside the module mounting hole 103. The first layer module 102 and the second layer module 115 are supported by the cold plate support beam 105 and the module fixing beam 108. The liquid cooling plate 114 can be limited by the cold plate positioning pin 111 to improve the heat dissipation effect of the first layer module 102 and the second layer module 115. The support beam fixing bolts 107 and the fixing beam fixing bolts 113 can achieve stable support of the cold plate support beam 105 and the module fixing beam 108, thereby improving the stability of the two-layer stacking of the battery module.

[0031] The limiting mechanism 2 includes a module limiting plate 201, which is fixedly installed inside the lower shell 101 of the battery pack. A plurality of limiting fixing holes 202 are opened on the top of the module limiting plate 201. The limiting fixing holes 202 are threadedly connected to the support beam fixing bolts 107. Both ends of the two module limiting plates 201 are fixedly installed with a connecting block 203. The top of the connecting block 203 is fixedly installed with a first rotating support 204. The top of the first rotating support 204 is rotatably connected to the first limiting rotating rod 205. One side of the inner side of the first limiting rotating rod 205 is opened. A limiting slide 206 is provided, a limiting sliding rod 207 is fixedly installed inside the limiting slide 206, the outer side of the limiting sliding rod 207 is slidably connected to the limiting sliding sleeve 208, the bottom of the limiting sliding sleeve 208 is fixedly connected to the limiting spring 209, the outer side of the limiting sliding sleeve 208 is fixedly installed with a second rotating support 210, the top of the second rotating support 210 is rotatably connected to the second limiting rotating rod 211, the top of the second limiting rotating rod 211 is rotatably connected to the third rotating support 212, and the top of the third rotating support 212 is fixedly installed with a limiting support The top of the first limit rotation rod 205 is rotatably connected to the fourth rotation support 213, and the limit clamping plate 215 is fixedly installed on the outside of the fourth rotation support 213. The module limit plate 201 is used to achieve uniform separation of a layer of modules 102. At the same time, when a layer of modules 102 is placed inside the lower shell 101 of the battery pack, the limit support plate 214 is pressed down by the layer of modules 102, so that the limit support plate 214 drives the third rotation support 212, the second limit rotation rod 211 and the second rotation support 210 to descend, so that the second rotation support 210 The limiting sliding sleeve 208 is driven to slide on the outside of the limiting sliding rod 207 and squeeze the limiting spring 209. Under the action of the first rotating support 204, the first limiting rotating rod 205 drives the fourth rotating support 213 and the limiting clamping plate 215 to rotate. The limiting support plate 214 can be used to support the first layer of module 102, and the limiting clamping plate 215 can be used to clamp and limit the two sides of the first layer of module 102 to achieve precise positioning of the first layer of module 102, facilitate the rapid installation of the first layer module fixing bolts 104, and improve the efficiency of module stacking installation.

[0032] Working principle: Before using this steel module two-layer stacking structure, you need to check the overall condition of the device to make sure it can work normally. Figure 1 - Figure 6As shown, first, the module limiting plate 201 is installed inside the lower shell 101 of the battery pack. When the first layer of module 102 is placed inside the lower shell 101 of the battery pack, the limiting support plate 214 is pressed down by the first layer of module 102, so that the limiting support plate 214 drives the third rotating support 212, the second limiting rotating rod 211 and the second rotating support 210 to descend, so that the second rotating support 210 drives the limiting sliding sleeve 208 to slide on the outside of the limiting sliding rod 207 and squeeze the limiting spring 209. Under the action of the first rotating support 204, the first limiting rotating rod 205 drives the fourth rotating support 213 and the limiting clamping plate 215 to rotate, so that the first layer of module 102 can be supported by the limiting support plate 214, and the two sides of the first layer of module 102 can be clamped and limited by the limiting clamping plate 215. The precise positioning of the first layer module 102 is achieved, which facilitates the rapid installation of the first layer module fixing bolts 104 and improves the efficiency of module stacking installation. Secondly, the first layer module 102 is placed using the battery pack lower shell 101, and the first layer module 102 is fixed by the first layer module fixing bolts 104 inside the module mounting hole 103. The first layer module 102 and the second layer module 115 are supported by the cold plate support beam 105 and the module fixing beam 108. The liquid cooling plate 114 can be limited by the cold plate positioning pin 111 to improve the heat dissipation effect of the first layer module 102 and the second layer module 115. The support beam fixing bolts 107 and the fixing beam fixing bolts 113 can achieve stable support of the cold plate support beam 105 and the module fixing beam 108, thereby improving the stability of the two-layer stacking of the battery module.

[0033] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A steel module two-layer stacking structure, comprising a module stacking structure (1), and a liquid cooling plate (114) installed inside the module stacking structure (1); A plurality of limiting mechanisms (2) are provided inside the module stacking structure (1), and a limiting clamping plate (215) is fixedly installed on the top of the limiting mechanism (2); It is characterized by further comprising: The module stacking structure (1) comprises a battery pack lower shell (101), a plurality of first-layer modules (102) are arranged inside the battery pack lower shell (101), and a plurality of module mounting holes (103) are symmetrically opened on both sides of the first-layer modules (102); The battery pack lower shell (101) is provided with a thread at a corresponding installation position, and the installation bolt (113) passes through the module installation hole (103) and is threadedly connected to the lower shell, and a cold plate support beam (105) is provided on the top of the first layer module (102); Wherein, assembly mounting holes (106) are provided on both sides of the middle portion of the cold plate support beam (105), and support beam fixing bolts (107) are connected to the inner threads of the assembly mounting holes (106); The limiting mechanism (2) comprises a module limiting plate (201), the module limiting plate (201) being fixedly mounted inside the lower shell (101) of the battery pack, a plurality of limiting fixing holes (202) being provided on the top of the module limiting plate (201), the limiting fixing holes (202) being threadedly connected to the support beam fixing bolts (107), and connecting blocks (203) being fixedly mounted at both ends of the two module limiting plates (201); A first rotating support (204) is fixedly installed on the top of the connecting block (203), a first position-limiting rotating rod (205) is rotatably connected to the top of the first rotating support (204), a position-limiting sliding groove (206) is provided on one side of the interior of the first position-limiting rotating rod (205), a position-limiting sliding rod (207) is fixedly installed inside the position-limiting sliding groove (206), and a position-limiting sliding sleeve (208) is slidably connected to the outer side of the position-limiting sliding rod (207); The bottom of the limiting sliding sleeve (208) is fixedly connected to the limiting spring (209), the outer side of the limiting sliding sleeve (208) is fixedly installed with a second rotating support (210), the top of the second rotating support (210) is rotatably connected to the second limiting rotating rod (211), the top of the second limiting rotating rod (211) is rotatably connected to the third rotating support (212), the top of the third rotating support (212) is fixedly installed with a limiting support plate (214), the top of the first limiting rotating rod (205) is rotatably connected to the fourth rotating support (213), and the limiting clamping plate (215) is fixedly installed on the outer side of the fourth rotating support (213).

2. The two-layer steel module stacking structure according to claim 1, characterized in that: Module fixing beams (108) are symmetrically mounted on both ends of the cold plate support beam (105), and fixing supports (109) are fixedly mounted at the top center position and both sides of the two module fixing beams (108), a first fixing hole (110) is opened on one side inside the fixing support (109), and a cold plate positioning pin (111) is symmetrically mounted on one side of the top of the module fixing beam (108).

3. The two-layer steel module stacking structure according to claim 2, characterized in that: A second fixing hole (112) is provided on a side of the fixing support (109) away from the first fixing hole (110); the second fixing hole (112) is a threaded hole; the first fixing hole (110) is a through hole; the cold plate support beam (105) is connected to a thread at a corresponding position of the module limit plate (201) through a support beam fixing bolt (107) passing through the assembly mounting hole (106); the liquid cooling plate (114) is arranged on the top of the cold plate support beam (105); and a second layer module (115) is provided on the top of the liquid cooling plate (114).

4. The two-layer steel module stacking structure according to claim 3, characterized in that: The second-layer module fixing bolts (116) pass through the through holes at both ends of the second-layer module (115) and are threadedly connected to the second fixing holes (112) of the module fixing beam (108), and the first-layer module fixing bolts (104) pass through the through holes at both ends of the first-layer module (102) and are threadedly connected to the battery pack lower shell (101).

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