Steel module two-layer stacking structure

Abstract

The invention discloses a steel module two-layer stacking structure which comprises a module stacking structure and a liquid cooling plate installed in the module stacking structure, a plurality of limiting mechanisms are arranged in the module stacking structure, limiting clamping plates are fixedly installed at the tops of the interiors of the limiting mechanisms, and the module stacking structure comprises a battery pack lower shell. A plurality of first-layer modules are arranged inside the battery pack lower shell, a plurality of module mounting holes are symmetrically formed in the two sides of each first-layer module respectively, the mounting holes are through holes, threads are arranged at the corresponding mounting positions of the battery pack lower shell, mounting bolts penetrate through the module mounting holes to be in threaded connection with the lower shell, and the first-layer modules and the second-layer modules are in threaded connection. A cold plate supporting beam is arranged at the top of the first-layer module, assembly mounting holes are formed in the two sides of the middle of the cold plate supporting beam, the first-layer module is placed through the battery pack lower shell, and bolts are used for fixing the first-layer module through the module mounting holes; the first-layer module and the second-layer module are supported through the cold plate supporting beams and the battery pack lower shell module fixing beams.

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 the battery pack assembly of new energy vehicles. In the design of the two-layer stacking scheme, 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 scheme can withstand when it is under load, stiffness refers to the deformation of the two-layer stacking scheme when it is under load, stability refers to the stability of the two-layer stacking scheme when it is under load, and durability refers to the performance maintenance ability of the two-layer stacking scheme during its service life.

[0003] Announcement No. CN 211428246 U discloses a double-layer battery module. By setting a first through hole and a second through hole on the bracket, setting a first threaded hole and a second threaded hole on the base, setting a first through hole and a second through hole on the first-layer battery module, and setting a third through hole on the second-layer battery module, the bracket and the first-layer battery module can be fixed to the base by a first bolt to ensure the connection strength of the first-layer battery module, the bracket and the base, and then the second-layer battery module, the bracket and the first-layer battery module are fixed to the base by a second bolt, and then the second-layer battery module is superimposed and fixed on the first-layer battery module to ensure the structural strength of the double-layer battery module. However, the 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 on the base by the first bolt to ensure 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. When installing the bolts, it is difficult to quickly install the bolts into the through holes, 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-mentioned problems. Summary of the invention

[0006] The object of the present invention is to provide a two-layer stacking structure of a steel module to solve the problem proposed in the above background technology that although the double-layer battery module is fixed to the base with the bracket and the first layer battery module by the first bolt to ensure 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, resulting in difficulty in quickly installing the bolts into the through holes when installing the bolts, affecting the efficiency of the battery module installation, and 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 solutions: 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 arranged 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 comprises a battery pack lower shell, wherein a plurality of first-layer modules 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 modules;

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

[0012] Among them, assembly installation holes are opened on both sides of the middle part of the cold plate support beam, and the assembly installation 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 opened on the side of the fixed support away from the first fixing hole, and the second fixing hole is a threaded hole. The cold plate support beam fixing bolt 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, and 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, and 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 rotating support. A limiting sliding groove is provided on one side of an interior of the first limiting rotating rod, and a limiting sliding rod is fixedly installed inside the limiting sliding groove, and a limiting sliding sleeve is slidably connected to the outer side of the limiting sliding rod.

[0018] Preferably, the bottom of the limit sliding sleeve is fixedly connected to a limit spring, the outer side of the limit sliding sleeve is fixedly installed with a second rotating support, the top of the second rotating support is rotatably connected to a second limit rotating rod, the top of the second limit rotating rod is rotatably connected to a third rotating support, the top of the third rotating support is fixedly installed with a limit support plate, the top of the first limit rotating rod is rotatably connected to a fourth rotating support, and the limit 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 the steel module uses the lower shell of the battery pack to place the first layer of modules, and the first layer of modules is fixed by passing the first layer of module fixing bolts through the module mounting holes, and the first layer of modules and the second layer of modules are supported by the cold plate support beam and the module fixing beam, and the two sides of the first layer of modules are clamped and limited by the limiting clamping plate, so as to realize the precise positioning of the first layer of modules, facilitate the rapid installation of the first layer of module fixing bolts, and improve the efficiency of module stacking installation. The specific contents are as follows:

[0020] 1. By setting up the module stacking structure, not only can the lower shell of the battery pack be used to place the first layer of modules, but also the first layer of modules can be fixed by the first layer of module fixing bolts inside the module mounting hole, the first layer of modules and the second layer of modules can be supported by the cold plate support beam and the module fixing beam, the liquid cold plate can be limited by the cold plate positioning pin, and the cold plate support beam and the module fixing beam can be stably supported by the support beam fixing bolts and the fixing beam fixing bolts, thereby improving the stability of the two-layer stacking of the battery module;

[0021] 2. By setting the 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 a 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, and 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 a layer of modules can be clamped and limited by the limiting clamping plate, so as to realize precise positioning of a 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 It is a schematic diagram of the three-dimensional structure of the module stacking structure in the present invention;

[0024] Figure 3 It 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 It is a schematic diagram of the three-dimensional structure of the module fixing beam in the present invention;

[0026] Figure 5 It is a schematic diagram of the three-dimensional structure of the limiting mechanism in the present invention;

[0027] Figure 6 It is a schematic diagram of the three-dimensional structure of the cross section of the first limit 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. Fixed support; 110. First fixing hole; 111. Cold plate positioning pin; 112. Second fixing hole; 113. Fixed beam fixing bolt; 114. Liquid cooling plate; 115. Second layer module; 116. The 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 be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figure 1-Figure 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 arranged 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 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 module 102, wherein the first-layer module fixing bolt 104 passes through the module mounting hole 103 and the thread of the battery pack lower shell 101 A cold plate support beam 105 is provided on the top of a layer of modules 102, wherein assembly mounting holes 106 are provided on both sides of the middle of the cold plate support beam 105, support beam fixing bolts 107 pass through the assembly mounting holes 106 and are threadedly connected to the module limiting plate 201, and 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, and 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, and a cold plate positioning pin 111 is symmetrically installed on one side of the top of the module fixing beam 108, and the fixed support 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 arranged 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, and supports the first layer module 102 and the second layer module 115 through 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 provided 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 connecting blocks 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 with a first limiting rotating rod 205. One side of the inner side of the first limiting rotating rod 205 is opened. A limiting slide groove 206 is provided, a limiting sliding rod 207 is fixedly installed inside the limiting slide groove 206, a limiting sliding sleeve 208 is slidably connected to the outer side of the limiting sliding rod 207, a limiting spring 209 is fixedly connected to the bottom of the limiting sliding sleeve 208, a second rotating support 210 is fixedly installed on the outer side of the limiting sliding sleeve 208, a second limiting rotating rod 211 is rotatably connected to the top of the second rotating support 210, a third rotating support 212 is rotatably connected to the top of the second limiting rotating rod 211, and a limiting support 212 is fixedly installed on the top of the third rotating support 212. 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 a layer of module 102, and the limiting clamping plate 215 can be used to clamp and limit the two sides of a layer of module 102, so as to achieve precise positioning of a layer of module 102, facilitate the rapid installation of the fixing bolts 104 of the first layer of module, 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 a 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 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 outer side 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 layer of module 102 can be supported by the limiting support plate 214, and the two sides of the 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 and 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 protection scope 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 arranged 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 lower shell (101) of the battery pack is provided with a thread corresponding to the installation position, the installation bolt (113) passes through the module installation hole (103) and is threadedly connected to the lower shell, and 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 internal threads of the assembly mounting holes (106) are connected with support beam fixing bolts (107).

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

3. A 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; a fixing bolt (113) of the cold plate support beam (105) passes through a fixing hole (110) and is connected to a thread at a corresponding position of the lower shell of the battery pack; the liquid cooling plate (114) is arranged on the top of the cold plate support beam (105); and a second-layer module (115) is arranged on the top of the liquid cooling plate (114).

4. A 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 cold plate support beam (105), 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).

5. The two-layer steel module stacking structure according to claim 1 is characterized in that: The limiting mechanism (2) comprises a module limiting plate (201), the module limiting plate (201) is fixedly mounted inside the lower shell (101) of the battery pack, a plurality of limiting fixing holes (202) are provided on the top of the module limiting plate (201), the limiting fixing holes (202) are threadedly connected to the support beam fixing bolts (107), and connecting blocks (203) are fixedly mounted at both ends of the two module limiting plates (201).

6. A two-layer steel module stacking structure according to claim 5, characterized in that: A first rotating support (204) is fixedly installed on the top of the connecting block (203), and a first limit rotating rod (205) is rotatably connected to the top of the first rotating support (204). A limit sliding groove (206) is provided on one side of the interior of the first limit rotating rod (205), and a limit sliding rod (207) is fixedly installed inside the limit sliding groove (206), and the outer side of the limit sliding rod (207) is slidably connected to a limit sliding sleeve (208).

7. A two-layer steel module stacking structure according to claim 6, characterized in that: The bottom of the limiting sliding sleeve (208) is fixedly connected to a 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 a second limiting rotating rod (211), the top of the second limiting rotating rod (211) is rotatably connected to a 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 a fourth rotating support (213), and the limiting clamping plate (215) is fixedly installed on the outer side of the fourth rotating support (213).

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