CTP battery pack with cold plate series connection structure

Abstract

The utility model relates to the technical field of CTP battery packs, in particular to a CTP battery pack with a cold plate serial connection structure, which comprises a plurality of battery cells and a plurality of liquid cooling plates, the plurality of battery cells and the plurality of liquid cooling plates are stacked into a block to form a battery cell stacking block; the liquid cooling plate further comprises a first series connection pipeline and a second series connection pipeline, and the water path ports of the two adjacent liquid cooling plates are communicated through the first series connection pipeline; a plurality of battery cell stacking blocks are arranged, and the plurality of battery cell stacking blocks are used for being loaded into a battery box in batches so as to form a battery cell module; the water paths of the two adjacent battery cell stacking blocks are communicated through the second series pipeline; according to the CTP battery pack with the cold plate series connection structure provided by the utility model, a plurality of battery core stacking blocks are arranged in the battery box in batches to form the battery core module, so that the battery core module can be conveniently put into the box, and the problem that the battery core module of the existing CTP battery is difficult to put into the box is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to CTP battery pack technical field especially, it relates to a kind of CTP battery pack with cold plate string structure. BACKGROUND

[0002] CTP battery pack because it directly integrates cell on battery pack, saves intermediate module section, to effectively improve the space utilization and energy density of battery pack, and simplify structure to reduce cost.For CTP battery pack, large face liquid cooling is a kind of high-efficiency heat dissipation heat dissipation mode, ensure that even in high-power output or fast charging, battery can be kept in a suitable working temperature range.For example, the invention application disclosed in the publication (announcement) No.CN117832684A discloses a kind of CTP cell large face liquid cooling energy storage electric box, and the heat dissipation of the cell of it adopts large face liquid cooling, to realize high-efficiency heat dissipation.

[0003] As the above technical scheme, in the existing CTP battery structure using large face liquid cooling technology to reduce temperature, cell and liquid cooling plate are stacked into block, and the waterway port between block and block is connected by pipeline in series, to finally form a cell module compatible with the size of box body.The cell module under the structure is relatively large, and in the actual assembly process, cell module is difficult to enter the box. UTILITY MODEL CONTENT

[0004] Therefore, the utility model provides a kind of CTP battery pack with cold plate string structure, it is formed into cell module by the fact that several cell stacking blocks are loaded into battery box in batches, facilitate the entry of cell module into the box, solve the problem of the entry of cell module into the box of existing CTP battery.

[0005] The technical scheme of the utility model is realized as follows:

[0006] The utility model provides a kind of CTP battery pack with cold plate string structure, including several cells and several liquid cooling plates, wherein,

[0007] Several cells and several liquid cooling plates are stacked into block to form cell stacking block;

[0008] It further includes first stringing pipeline and second series pipeline, wherein,

[0009] The waterway port of adjacent two liquid cooling plates is communicated by the first stringing pipeline;

[0010] The cell stacking block is provided with several, and several cell stacking blocks are used to load into battery box in batches, to form cell module;

[0011] The waterway of adjacent two cell stacking blocks is communicated by the second series pipeline.

[0012] Preferably, on the basis of the above technical solutions, the second series connection pipeline is a corrugated pipe.

[0013] Preferably, on the basis of the above technical solutions, a union joint is arranged on the pipe opening of the second series connection pipeline, wherein,

[0014] The union joint is screwed with the water channel port of the cell stacking block.

[0015] Preferably, on the basis of the above technical solutions, the union joint comprises a connecting pipe, a fastening nut and a sealing gasket, wherein,

[0016] One end of the connecting pipe is fixedly connected with the pipe opening of the second series connection pipeline, and the other end is rotationally connected with the fastening nut;

[0017] An external thread is arranged on the water channel port of the cell stacking block, and the fastening nut is screwed with the external thread;

[0018] The sealing gasket is arranged between the pipe opening of the connecting pipe and the water channel port of the cell stacking block.

[0019] Preferably, on the basis of the above technical solutions, the connecting pipe is an aluminum flared pipe.

[0020] Preferably, on the basis of the above technical solutions, the distance between two adjacent cell stacking blocks is 120mm.

[0021] Preferably, on the basis of the above technical solutions, one or two cells are arranged between two liquid cooling plates.

[0022] Preferably, on the basis of the above technical solutions, the water channel port of the liquid cooling plate is crimped and sealed with the port of the first series connection pipeline.

[0023] Preferably, on the basis of the above technical solutions, the two ends of the first series connection pipeline are in the shape of a flared pipe.

[0024] Preferably, on the basis of the above technical solutions, an outwardly protruding conical table is arranged on the water channel port of the liquid cooling plate.

[0025] The CTP battery pack with the cold plate series connection structure has the following advantages over the prior art:

[0026] (1) By arranging a plurality of cell stacking blocks to be loaded into the battery box in batches, a cell module is formed, which facilitates the loading of the cell module into the box.

[0027] (2) By arranging a union joint on the pipe opening of the second series connection pipeline, the pipeline connection after the cell stacking block is loaded into the box is facilitated.

[0028] (3) By setting the second series pipeline as a corrugated pipe, it is convenient to utilize the bendable capacity of the corrugated pipe to enable the cell stacking blocks to be installed in a horizontal stacking mode and a vertical stacking mode, thereby improving the diversity of process assembly.

[0029] (4) By setting the two ends of the first series pipeline in a flared shape, and setting a conical table protruding outward on the water channel port of the liquid cooling plate, it is convenient to insert the water channel port of the liquid cooling plate into the first series pipeline, thereby facilitating subsequent crimping work. At the same time, through the structure, it is convenient to form a labyrinth seal structure at the connection between the first series pipeline and the water channel port of the liquid cooling plate, thereby improving the sealing effect. BRIEF DESCRIPTION OF DRAWINGS

[0030] 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 embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0031] Figure 1 It is a perspective view of a CTP battery pack with a cold plate series connection structure of the present application.

[0032] Figure 2 It is an enlarged view of point A of Figure 1

[0033] Figure 3 It is a schematic diagram of horizontal cell stacking.

[0034] Figure 4 It is a water channel structure display diagram at the first series pipeline.

[0035] Figure 5 It is a water channel structure display diagram at the second series pipeline.

[0036] In the figure: 1, cell module; 11, cell stacking block; 12, second series pipeline; 111, cell; 112, liquid cooling plate; 113, first series pipeline; 121, connecting pipe; 122, fastening nut; 123, sealing gasket. DETAILED DESCRIPTION

[0037] The technical solutions in the present application will be described clearly and completely below in combination with the specific implementation manners of the present application. Obviously, the described implementation manners are only some implementation manners of the present application, but not all the implementation manners. Based on the implementation manners in the present application, all other implementation manners obtained by those skilled in the art without creative labor are within the protection scope of the present application. ​

[0038] As Figures 1-5 shown, the utility model discloses a CTP battery pack with cold plate series connection structure, including a plurality of electric core 111, a plurality of liquid cooling plate 112, first series connection pipeline 113 and second series connection pipeline 12.

[0039] Among them, a plurality of electric core 111 and a plurality of liquid cooling plate 112 are stacked into blocks to form electric core stack block 11, and the waterway port of adjacent two liquid cooling plates 112 is communicated through first series connection pipeline 113.Electric core stack block 11 is provided with a plurality of electric core stack block 11 is used to divide into battery box, and then be used to form electric core module 1, and the waterway of adjacent two electric core stack blocks 11 is communicated through second series connection pipeline 12.

[0040] The above structure realizes the modular design of electric core module 1, when entering the box, a plurality of electric core stack blocks 11 can be divided into the box, after entering the box, the waterway of adjacent electric core stack blocks 11 is communicated through second series connection pipeline 12, so as to make the entering of electric core module 1 in the box simple and convenient.

[0041] In the above-mentioned cold plate series connection structure, the second series connection pipeline 12 is a corrugated pipe, and the corrugated pipe has a bendable ability, so that the bendable ability of the corrugated pipe enables the electric core stack block 11 and the electric core stack block 11 to be installed in a horizontal stacking manner and a vertical stacking manner, thereby improving the diversity of process assembly. Specifically, the spacing between the adjacent two electric core stack blocks 11 is 120mm, so that the adjacent two electric core stack blocks 11 can be smoothly folded and installed.

[0042] In addition, a union joint is arranged on the pipe opening of the second series connection pipeline 12, and the union joint is screwed with the waterway port of the electric core stack block 11, so that the structure facilitates the pipeline connection of the electric core stack block 11 after entering the box. The union joint comprises a connecting pipe 121, a fastening nut 122 and a sealing gasket 123.

[0043] Among them, one end of connecting pipe 121 is fixedly connected with the pipe opening of second series connection pipeline 12, and the other end is rotatably connected with fastening nut 122;The waterway port of electric core stack block 11 is provided with external thread, and fastening nut 122 is screwed with external thread;The sealing gasket 123 is arranged between the pipe opening of connecting pipe 121 and the waterway port of electric core stack block 11.

[0044] The connecting pipe 121 is an aluminum flared pipe, and the second series connection pipeline 12 is made of PA12 material, and the two are connected through hot pressing process.

[0045] The inner side of one end of fastening nut 122 has an inner edge, one end of connecting pipe 121 extends into fastening nut 122 and is turned up, the turned-up edge is limited in the axial direction with the inner edge, forming a union structure, so that the fastening nut 122 can rotate in the circumferential direction at the end of the connecting pipe 121, but cannot be separated from the connecting pipe 121.

[0046] The outer diameter of the gasket 123 is matched with the inner diameter of the fastening nut 122, and when the fastening nut 122 is screwed and tightened with the water channel port of the cell stack block 11, the gasket 123 is clamped between the water channel port of the cell stack block 11 and the pipe opening of the connecting pipe 121, thereby forming a seal.

[0047] In the above-mentioned cold plate stringing structure, one or two cells 111 are arranged between two adjacent liquid cooling plates 112. Referring to Figure 3 The thickness of the cell 111 is 33 mm, two pieces of the liquid cooling plate 112 clamp two pieces of the cell 111, and a 1 mm thick heat-conducting glue is arranged between the two pieces of the liquid cooling plate 112. The first stringing pipe 113 is made of PA12+TPE material, and during the stacking process of the cell 111 and the cell 111, the water channel port of the liquid cooling plate 112 is crimped and sealed with the port of the first stringing pipe 113 by using a pipe pressing device.

[0048] In order to facilitate connection, the two ends of the first stringing pipe 113 are in the shape of a flared opening, and a conical table protruding outward is arranged on the water channel port of the liquid cooling plate 112. Through the structure, the water channel port of the liquid cooling plate 112 is inserted into the first stringing pipe 113, and then the subsequent crimping work is facilitated. At the same time, after crimping, the pipe wall of the first stringing pipe 113 is tightly attached to the outer surface of the water channel port of the liquid cooling plate 112 and the outer surface of the conical table, so that a labyrinth seal structure is formed at the connection between the first stringing pipe 113 and the water channel port of the liquid cooling plate 112, thereby improving the sealing effect.

[0049] It should be noted that the water channel port of the liquid cooling plate 112 and the first stringing pipe 113 are both tubular structures, and the water channel ports of a plurality of liquid cooling plates 112 are connected through the first stringing pipe 113 to form a water pipe flow channel, and the water channel port of the cell stack block 11 refers to the pipe opening of the water pipe flow channel.

[0050] The use method of the CTP battery pack with the cold plate stringing structure of the utility model is as follows:

[0051] Firstly, a plurality of cells 111 and a plurality of liquid cooling plates 112 are stacked into blocks to form a cell stack block 11, and in the stacking process, the first stringing pipe 113 is used to connect the water channel ports of the adjacent liquid cooling plates 112.

[0052] When the box is entered, a plurality of cell stack blocks 11 are fixed in the battery box in batches, and then the second stringing pipe 12 is used to connect the water channel ports of the adjacent cell stack blocks 11 to form a complete cell module 1, and the entering of the cell module 1 into the box is completed.

[0053] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A CTP battery pack with a cold plate series connection structure, comprising a plurality of battery cells (111) and a plurality of liquid cooling plates (112), wherein, a plurality of the battery cells (111) and a plurality of the liquid cooling plates (112) are stacked into blocks to form a battery cell stacked block (11); characterized in that it further comprises a first series connection pipeline (113) and a second series connection pipeline (12), wherein, the waterway ports of two adjacent liquid cooling plates (112) are connected through the first series connection pipeline (113); a plurality of the battery cell stacked blocks (11) are provided, and the plurality of the battery cell stacked blocks (11) are used to be loaded into a battery box in batches, thereby forming a battery cell module (1); the waterways of two adjacent battery cell stacked blocks (11) are connected through the second series connection pipeline (12); the second series connection pipeline (12) is a corrugated pipe, and a union joint is arranged on the pipe opening of the second series connection pipeline (12), wherein the union joint is screwed with the waterway port of the battery cell stacked block (11); the union joint comprises a connecting pipe (121), a fastening nut (122) and a sealing gasket (123), wherein one end of the connecting pipe (121) is fixedly connected with the pipe opening of the second series connection pipeline (12), and the other end is rotatably connected with the fastening nut (122); the waterway port of the battery cell stacked block (11) is provided with an external thread, and the fastening nut (122) is screwed with the external thread; the sealing gasket (123) is arranged between the pipe opening of the connecting pipe (121) and the waterway port of the battery cell stacked block (11).

2. The CTP battery pack with cold plate series connection structure according to claim 1, characterized in that: The connecting pipe (121) is an aluminum flared pipe.

3. The CTP battery pack with cold plate series connection structure according to claim 1, characterized in that: The spacing between two adjacent battery cell stacked blocks (11) is 120mm.

4. The CTP battery pack with cold plate series connection structure of claim 1, wherein: One or two battery cells (111) are arranged between two adjacent liquid cooling plates (112).

5. The CTP battery pack with cold plate series connection structure according to claim 1, characterized in that: The waterway port of the liquid cooling plate (112) is crimped and sealed with the port of the first series connection pipeline (113).

6. The CTP battery pack with cold plate series connection structure according to claim 5, characterized in that: Both ends of the first series connection pipeline (113) are in the shape of a flared opening.

7. The CTP battery pack with cold plate series connection structure according to claim 6, characterized in that: The waterway port of the liquid cooling plate (112) is provided with an outwardly protruding conical table.

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