High-integration battery module liquid cooling integrated structure

Abstract

The invention discloses a high-integration battery module liquid cooling integrated structure which comprises a liquid cooling integrated mechanism and a battery cell installed in the liquid cooling integrated mechanism, a connecting mechanism is arranged on the outer side of the liquid cooling integrated mechanism, a locking connecting block is arranged on the outer side of the connecting mechanism in a sleeving mode, and the liquid cooling integrated mechanism comprises a water cooling plate. The top of the water-cooling plate is connected with a heat-conducting structural adhesive in an attached manner, the battery cells are arranged at the top of the heat-conducting structural adhesive, the number of the battery cells is 24, the battery cells are connected with a middle partition plate in an attached manner, a concentric-square-shaped rubber frame is arranged between the two battery cells, two ends of each battery cell are connected with end plate insulating sheets in an attached manner, and the end plate insulating sheets are connected with the water-cooling plate in an attached manner. The module and the liquid cooling plate are integrated, the module strength is enhanced, standardized development is achieved, the development cost is saved, the module supports multi-layer stacking and can be used for logistics vehicles, energy storage and other scenes with large height size space, the module supports forward placement arrangement, reverse placement arrangement or forward and reverse mixed placement design, and the arrangement scheme is flexible.

Description

Technical Field

[0001] The present invention relates to the field of battery technology, and in particular to a highly integrated battery module liquid cooling integrated structure. Background Art

[0002] The power battery system is the most important component of new energy vehicles. With the development of new energy vehicles, the requirements for the energy density of the power battery system are getting higher and higher. However, due to the low voltage and low capacity of single cells, they cannot be directly used as a power source to power the car, so multiple cells need to be assembled into a battery module to meet the energy demand.

[0003] Publication No. CN 219246773 U discloses an integrated liquid-cooled battery module, comprising: a plurality of single cells, the plurality of single cells are arranged transversely along a first direction, and the positive pole and the negative pole of each single cell are respectively located on both sides thereof; a first liquid cooling system, the first liquid cooling system comprising: a liquid cooling plate structure, a connection structure, a liquid inlet structure, and a liquid outlet structure. By introducing integrated liquid cooling, the efficiency of liquid cooling is greatly improved, the integration of the module is enhanced, thereby improving the space utilization of the box, and further improving the energy density of the battery system. However, the patent still has the following problems in actual use:

[0004] Although the integrated liquid-cooled battery module greatly improves the efficiency of liquid cooling and enhances the integration of the module through the introduction of integrated liquid cooling, thereby improving the space utilization of the box and further improving the energy density of the battery system, the battery modules cannot be stacked or laid flat. When the battery mold is in use, the power of the battery module is determined by the number of batteries. Although the prior art can connect the batteries in series through wires to increase the power of the battery module, the wire connection is unstable and can easily cause the wire to fall off. At the same time, it is not convenient for rapid disassembly and maintenance of the battery, thereby affecting the service life of the battery module.

[0005] A highly integrated battery module liquid cooling integrated structure is proposed to solve the above-mentioned problems. Summary of the invention

[0006] The purpose of the present invention is to provide a highly integrated battery module liquid cooling integrated structure to solve the problem that the integrated liquid-cooled battery module proposed in the above background technology, although the introduction of integrated liquid cooling has greatly improved the efficiency of liquid cooling and enhanced the integration of the module, thereby improving the space utilization of the box body and further improving the energy density of the battery system, cannot stack or lay the battery modules flat. When the battery mold is in use, the power of the battery module is determined by the number of batteries. Although the batteries can be connected in series through wires in the prior art to increase the power of the battery module, the wire connection is unstable and easily causes the wire to fall off. At the same time, it is not convenient for rapid disassembly and maintenance of the battery, thereby affecting the service life of the battery module.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solutions: a highly integrated battery module liquid cooling integrated structure, comprising a liquid cooling integrated mechanism, and a battery cell installed inside the liquid cooling integrated mechanism;

[0008] A connecting mechanism is arranged on the outside of the liquid cooling integrated mechanism, and a locking connecting block is sleeved on the outside of the connecting mechanism;

[0009] Also includes:

[0010] The liquid cooling integrated mechanism comprises a water cooling plate, the top of which is bonded with a heat-conducting structural adhesive, and the battery core is arranged on the top of the heat-conducting structural adhesive;

[0011] Among them, the number of battery cells is twenty-four, the battery cells are connected with a middle partition, and a circular rubber frame is provided between two battery cells;

[0012] Wherein, both ends of the battery core are bonded and connected with end plate insulating sheets, and both ends of the end plate insulating sheet are bonded and connected with a first end plate and a second end plate respectively.

[0013] Preferably, the tops of several of the battery cells are fitted and connected with a CCS assembly, the front and back sides of several of the battery cells are fitted and connected with side panels, the top of the CCS assembly is fitted and connected with a top guard plate, and the top guard plate is internally snap-fitted and connected with several buckles.

[0014] Preferably, low-voltage plug-in bases are symmetrically installed on both sides of the top of the second end plate, a bus base is fixedly installed on one side of the top of the second end plate close to the low-voltage plug-in base, a bus cover is fixedly installed on the top of the bus base, and stacking sockets are symmetrically opened on both sides of the interior of the first end plate and the second end plate.

[0015] Preferably, the connecting mechanism includes a connecting plate, both sides of the connecting plate are rotatably connected to unlocking rotating rods, the unlocking rotating rod is rotatably connected to a rotating ring on one side close to the connecting plate, and an unlocking knob is fixedly installed on the end of the unlocking rotating rod.

[0016] Preferably, a plurality of spring connecting pieces are installed on the inner side of the unlocking knob for specifying functions, a compression telescopic rod is fixedly connected to one side of the plurality of spring connecting pieces installed on the inner side of the unlocking knob for specifying functions, a compression spring is slidably connected to the outer side of the compression telescopic rod, and the compression spring is fixedly connected to the rotating ring and the unlocking knob.

[0017] Preferably, the end of the unlocking rotating rod away from the unlocking knob is fixedly connected to an unlocking gear, the top and bottom of the unlocking knob are symmetrically meshed with unlocking racks, the end of the unlocking rack is fixedly connected to a locking pin, and the end of the unlocking rack away from the locking pin is fixedly connected to a reset telescopic rod.

[0018] Preferably, a reset spring is slidably connected to the outer side of the reset telescopic rod, and the reset spring is respectively engaged with the unlocking rack and the locking connecting block, and the locking connecting block is engaged with the first end plate and the second end plate through a locking pin and a stacking socket.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: the highly integrated battery module liquid cooling integrated structure integrates the module with the liquid cooling plate, enhances the module strength, standardizes development, saves development costs, supports multi-layer stacking, and can be used in scenes with large height and size space such as logistics vehicles and energy storage. The module supports positive placement, reverse placement, or positive and reverse mixed placement design, and the layout scheme is flexible. The unlocking rack drives the locking pin to extend from the inside of the locking connection block by the elastic force of the reset telescopic rod and the reset spring, and is connected with the first end plate and the second end plate by clamping, so that the stacking or tiling of the liquid cooling integrated mechanism can be realized, and the flexible layout of the liquid cooling integrated mechanism is improved. The specific contents are as follows:

[0020] 1. By setting up a liquid cooling integrated mechanism, the module and the liquid cooling plate are integrated to enhance the module strength, standardize development, and save development costs. The module supports multi-layer stacking and can be used in scenes with large height and size, such as logistics vehicles and energy storage. The module supports positive placement, reverse placement, or positive and reverse mixed placement design, and the layout scheme is flexible. The module integrates a liquid cooling system and can be used as an independent power supply system. The module is combined into a high-power, high-voltage power supply system by connecting in series or in parallel.

[0021] 2. By setting up the connecting mechanism, not only can the elastic force of the compression telescopic rod and the compression spring be utilized to make the connecting plate squeeze the first end plate and the second end plate on both sides of the liquid cooling integrated mechanism, but also the unlocking rotating rod and the unlocking gear can be driven to rotate by rotating the unlocking knob, and the meshing connection between the unlocking gear and the unlocking rack can be utilized to make the unlocking rack drive the locking pin to slide. When the locking pin is stored in the interior of the locking connecting block, the locking connecting block can be installed in the stacking jack inside the first end plate and the second end plate, and the elastic force of the reset telescopic rod and the reset spring can be utilized to make the unlocking rack drive the locking pin to extend from the interior of the locking connecting block and be engaged and connected with the first end plate and the second end plate, so that the liquid cooling integrated mechanism can be stacked or laid flat, thereby improving the flexible arrangement of the liquid cooling integrated mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0023] Figure 2 It is a schematic diagram of the exploded three-dimensional structure of the liquid cooling integrated mechanism in the present invention;

[0024] Figure 3 It is a schematic diagram of the three-dimensional structure of the present invention in an overall flattened state;

[0025] Figure 4 It is a schematic diagram of the three-dimensional structure of the connecting mechanism in the present invention;

[0026] Figure 5 It is a schematic diagram of the three-dimensional structure of the unlocking rotating rod and the rotating ring in the present invention;

[0027] Figure 6 It is a schematic diagram of the three-dimensional structure of the cross section of the locking connection block in the present invention.

[0028] In the figure: 1. Liquid cooling integrated mechanism; 101. Water cooling plate; 102. Thermal conductive structural adhesive; 103. Battery cell; 104. Middle partition; 105. Reciprocating rubber frame; 106. End plate insulating sheet; 107. First end plate; 108. Second end plate; 109. CCS assembly; 110. Side plate; 111. Top guard plate; 112. Low voltage plug-in base; 113. Convergence base; 114. Convergence cover; 11 5. Buckle; 116. Stacking jack; 2. Connecting mechanism; 201. Connecting plate; 202. Unlocking rotating rod; 203. Rotating ring; 204. Unlocking knob; 205. Spring connecting piece; 206. Compression telescopic rod; 207. Compression spring; 208. Unlocking gear; 209. Unlocking rack; 210. Locking pin; 211. Reset telescopic rod; 212. Reset spring; 213. Locking connecting block. 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 6 The present invention provides a technical solution: a highly integrated battery module liquid cooling integrated structure, comprising a liquid cooling integrated mechanism 1, and a battery cell 103 installed inside the liquid cooling integrated mechanism 1, a connecting mechanism 2 is arranged on the outside of the liquid cooling integrated mechanism 1, and a locking connecting block 213 is sleeved on the outside of the connecting mechanism 2, the liquid cooling integrated mechanism 1 comprises a water cooling plate 101, a thermal conductive structural adhesive 102 is bonded and connected to the top of the water cooling plate 101, and the battery cell 103 is arranged on the top of the thermal conductive structural adhesive 102, The number of the cells 103 is 24, the cells 103 are connected with a middle partition 104, a circular rubber frame 105 is provided between two cells 103, the two ends of the cells 103 are connected with an end plate insulating sheet 106, the two ends of the end plate insulating sheet 106 are respectively connected with a first end plate 107 and a second end plate 108, the tops of several cells 103 are connected with a CCS assembly 109, the front and back of several cells 103 are connected with a side The top of the plate 110 and the CCS assembly 109 are fitted with a top guard plate 111, and the top guard plate 111 is internally snap-connected with a number of buckles 115. Low-voltage plug-in bases 112 are symmetrically installed on both sides of the top of the second end plate 108. A bus base 113 is fixedly installed on one side of the top of the second end plate 108 close to the low-voltage plug-in base 112, and a bus cover 114 is fixedly installed on the top of the bus base 113. Stacking jacks 116 are symmetrically opened on both sides of the first end plate 107 and the second end plate 108. The module is integrated with the liquid cooling plate to enhance the strength of the module, standardize the development, and save development costs. The module supports multi-layer stacking and can be used in scenes with large height and space, such as logistics vehicles and energy storage. The module supports positive arrangement, reverse arrangement, or positive and reverse mixed arrangement design, and the arrangement scheme is flexible. The module integrates a liquid cooling system and can be used as an independent power supply system. The module is combined into a high-power and high-voltage power supply system in series or parallel.

[0031] The connecting mechanism 2 includes a connecting plate 201, both sides of the inner part of the connecting plate 201 are rotatably connected with an unlocking rotating rod 202, a side of the unlocking rotating rod 202 close to the connecting plate 201 is rotatably connected with a rotating ring 203, an unlocking knob 204 is fixedly installed at the end of the unlocking rotating rod 202, a plurality of spring connecting pieces 205 are installed on the inner side of the unlocking knob 204 for specifying functions, a compression telescopic rod 206 is fixedly connected to one side of the plurality of spring connecting pieces 205 installed on the inner side of the unlocking knob 204 for specifying functions, and a compression spring 206 is slidably connected to the outer side of the compression telescopic rod 206 07, the compression spring 207 is fixedly connected to the rotating ring 203 and the unlocking knob 204, the end of the unlocking rotating rod 202 away from the unlocking knob 204 is fixedly connected to the unlocking gear 208, the top and bottom of the unlocking knob 204 are symmetrically meshed and connected to the unlocking rack 209, the end of the unlocking rack 209 is fixedly connected to the locking pin 210, the end of the unlocking rack 209 away from the locking pin 210 is fixedly connected to the reset telescopic rod 211, the outer side of the reset telescopic rod 211 is slidably connected to the reset spring 212, and the reset spring 212 is respectively connected to the unlocking rack 209 The locking connection block 213 is engaged and connected with the first end plate 107 and the second end plate 108 through the locking pin 210 and the stacking socket 116. The connecting plate 201 is squeezed by the elastic force of the compression telescopic rod 206 and the compression spring 207 to squeeze the first end plate 107 and the second end plate 108 on both sides of the liquid cooling integrated mechanism 1. The unlocking rotating rod 202 and the unlocking gear 208 are driven to rotate by rotating the unlocking knob 204. The unlocking gear 208 is meshed with the unlocking rack 209 to drive the unlocking rack 209 to rotate. The locking pin 210 slides, and when the locking pin 210 is stored in the interior of the locking connection block 213, the locking connection block 213 can be installed in the stacking socket 116 inside the first end plate 107 and the second end plate 108, and the elastic force of the reset telescopic rod 211 and the reset spring 212 is utilized to make the unlocking rack 209 drive the locking pin 210 to extend out from the interior of the locking connection block 213, and engage and connect with the first end plate 107 and the second end plate 108, so that the stacking or tiling of the liquid cooling integrated mechanism 1 can be realized, thereby improving the flexible arrangement of the liquid cooling integrated mechanism 1.

[0032] Working principle: Before using this highly integrated battery module liquid cooling integrated structure, it is necessary to first check the overall condition of the device to ensure that it can work normally. Figure 1 - Figure 6As shown, first, place the first end plate 107 at one end of the water-cooled plate 101, insert the middle partition plate 104 coated with structural glue into the middle seam of the first end plate 107, stack twenty-four battery cells 103 according to the polarity direction requirements of the battery cells 103, place a circular rubber frame 105 between two battery cells 103, place the second end plate 108, squeeze the second end plate 108 to the rated length of the water-cooled plate 101, apply structural glue on the two side plates 110, and place them on the water-cooled plate 101. The front and rear sides of the plate 101 are pressed into place by the tooling, and the side plate 110, the middle partition plate 104, the first end plate 107, and the second end plate 108 are welded together by laser welding. The CCS assembly 109 is placed on the pole of the battery cell 103, and the aluminum bar is welded to the pole of the battery cell 103. The welded module is bonded to the thermal conductive structural adhesive 102, and the top guard plate 111 is installed. Secondly, the elastic force of the compression telescopic rod 206 and the compression spring 207 is used to The force acts to make the connecting plate 201 squeeze the first end plate 107 and the second end plate 108 on both sides of the liquid cooling integrated mechanism 1, and the unlocking rotating rod 202 and the unlocking gear 208 are driven to rotate by turning the unlocking knob 204. The unlocking gear 208 is meshed with the unlocking rack 209 to make the unlocking rack 209 drive the locking pin 210 to slide. When the locking pin 210 is stored in the interior of the locking connecting block 213, the locking connecting block 213 can be installed in the stacking socket 116 inside the first end plate 107 and the second end plate 108. The elastic force of the reset telescopic rod 211 and the reset spring 212 is used to make the unlocking rack 209 drive the locking pin 210 to extend out from the interior of the locking connecting block 213 and engage with the first end plate 107 and the second end plate 108, so that the liquid cooling integrated mechanism 1 can be stacked or laid flat, thereby improving the flexible arrangement of the liquid cooling integrated mechanism 1.

[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 highly integrated battery module liquid cooling integrated structure, comprising a liquid cooling integrated mechanism (1), and a battery cell (103) installed inside the liquid cooling integrated mechanism (1); A connecting mechanism (2) is provided on the outside of the liquid cooling integrated mechanism (1), and a locking connecting block (213) is sleeved on the outside of the connecting mechanism (2); It is characterized in that Also includes: The liquid cooling integrated mechanism (1) comprises a water cooling plate (101), the top of the water cooling plate (101) is bonded and connected with a thermal conductive structural adhesive (102), and the battery cell (103) is arranged on the top of the thermal conductive structural adhesive (102); The number of the battery cells (103) is twenty-four, the battery cells (103) are fitted and connected with a middle partition (104), and a circular rubber frame (105) is provided between two of the battery cells (103); Wherein, the two ends of the battery cell (103) are bonded and connected with an end plate insulating sheet (106), and the two ends of the end plate insulating sheet (106) are bonded and connected with a first end plate (107) and a second end plate (108) respectively.

2. The highly integrated battery module liquid cooling integrated structure according to claim 1, characterized in that: The tops of several of the battery cells (103) are fitted and connected to a CCS assembly (109); the front and back sides of several of the battery cells (103) are fitted and connected to side panels (110); the top of the CCS assembly (109) is fitted and connected to a top guard plate (111); and the top guard plate (111) is internally snap-fitted and connected to several buckles (115).

3. The highly integrated battery module liquid cooling integrated structure according to claim 2, characterized in that: Low-voltage plug-in bases (112) are symmetrically installed on both sides of the top of the second end plate (108), a bus base (113) is fixedly installed on one side of the top of the second end plate (108) close to the low-voltage plug-in base (112), a bus cover (114) is fixedly installed on the top of the bus base (113), and stacking sockets (116) are symmetrically opened on both sides of the inside of the first end plate (107) and the second end plate (108).

4. The highly integrated battery module liquid cooling integrated structure according to claim 1, characterized in that: The connection mechanism (2) comprises a connection plate (201), both sides of the connection plate (201) are rotatably connected to unlocking rotating rods (202), one side of the unlocking rotating rod (202) close to the connection plate (201) is rotatably connected to a rotating ring (203), and an unlocking knob (204) is fixedly mounted on the end of the unlocking rotating rod (202).

5. The highly integrated battery module liquid cooling integrated structure according to claim 4, characterized in that: The inner side of the unlocking knob (204) is provided with a plurality of spring connection pieces (205) for specifying functions, one side of the inner side of the unlocking knob (204) is fixedly connected with a compression telescopic rod (206), the outer side of the compression telescopic rod (206) is slidably connected with a compression spring (207), and the compression spring (207) is fixedly connected to the rotating ring (203) and the unlocking knob (204).

6. The highly integrated battery module liquid cooling integrated structure according to claim 5, characterized in that: An end of the unlocking rotating rod (202) away from the unlocking knob (204) is fixedly connected to an unlocking gear (208); the top and bottom of the unlocking knob (204) are symmetrically meshed and connected to an unlocking rack (209); an end of the unlocking rack (209) is fixedly connected to a locking pin (210); and an end of the unlocking rack (209) away from the locking pin (210) is fixedly connected to a resetting telescopic rod (211).

7. The highly integrated battery module liquid cooling integrated structure according to claim 6, characterized in that: A return spring (212) is slidably connected to the outer side of the return telescopic rod (211), and the return spring (212) is respectively engaged with the unlocking rack (209) and the locking connection block (213), and the locking connection block (213) is engaged with the first end plate (107) and the second end plate (108) via a locking latch (210) and a stacking socket (116).

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