Module end plate structure of integrated water cooling pipeline
Through the module end plate structure of integrated water-cooled pipes, the problems of high operation and high maintenance costs of lithium-ion batteries during maintenance or replacement are solved, and the module is easily disassembled and efficient heat dissipation is achieved, reducing the maintenance cost and structural layout difficulty.
Patent Information
- Application Number
- CN202420910552.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-28
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-04-28
AI Technical Summary
When repairing or replacing lithium-ion batteries, the operation is difficult and the maintenance cost is high. It is difficult for the prior art to separate the module and the water-cooled plate without damaging the module, water-cooled plate and box.
Design a module end plate structure with integrated water-cooled pipes. By setting up a cooling water port on the box, the module and the water-cooled plate are connected through water pipes. The water-cooled pipes are integrated into the module end plate, simplifying the integration of the module and the water-cooled plate and disassembly process.
It reduces the difficulty of module splitting, facilitates module disassembly, effectively reduces maintenance costs, reduces the difficulty of internal structure layout, improves internal volume utilization, and improves heat dissipation efficiency and safety of battery packs.
Smart Images
Figure CN222507743U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of new energy vehicle power batteries, and in particular to a module end plate structure with integrated water cooling pipelines. Background Art
[0002] With the rapid development of the new energy vehicle market, lithium-ion batteries, as their core power source, have been widely used, which has also increased the demand for lithium-ion batteries. In the production of lithium-ion batteries, in order to ensure the heat dissipation efficiency of the battery and reduce the difficulty of production, large-area water cooling plates are often used to cover both sides of the CTP module, so as to achieve rapid heat dissipation of the CTP module through the upper and lower surfaces, and at the same time, this can also improve the safety of the CTP module.
[0003] However, the large-area water-cooling plate is directly installed on the bottom of the box. When the CTP module needs to be disassembled separately for repair or replacement, it is difficult to separate the module from the box without damaging the module, the water-cooling plate and the box. When the module or the battery cell is damaged, the entire box can only be replaced, which makes the repair difficult and the repair cost high.
[0004] Therefore, in order to solve the problems of difficult operation and high maintenance cost when repairing or replacing lithium-ion batteries, it is now necessary to provide a module end plate structure with integrated water cooling pipes. Utility Model Content
[0005] The utility model aims to provide a module end plate structure with integrated water cooling pipes, which reduces the difficulty of disassembling the module, facilitates the module disassembly, effectively reduces the maintenance cost, reduces the difficulty of internal structure layout, and improves the internal volume utilization.
[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0007] The utility model is mainly used to reduce the difficulty of arranging the internal structure of the battery pack and improve the volume utilization rate. The module can be integrated with the water-cooling plate and installed in the box body separately, which is convenient for module disassembly and reduces maintenance costs. Specifically, it provides a module end plate structure with an integrated water-cooling pipeline, including a box body, on which a cooling water inlet is provided; a plurality of modules are provided in the box body, and each module is connected by a water pipe, and the head end of the water pipe is connected to the cooling water inlet; the module includes a soft-pack battery cell, an upper cold plate is provided at the upper end of the soft-pack battery cell, and a lower cold plate is provided at the lower end of the soft-pack battery cell, and the lower cold plate is connected to the bottom of the box body; a front end plate is provided on one side of the soft-pack battery cell, and the front end plate is respectively connected to the upper cold plate and the lower cold plate; a water nozzle is provided on the front end plate, and the water nozzle is connected to the water pipe, and a water cooling pipeline is provided in the front end plate, and the water cooling pipeline is connected to the water nozzle.
[0008] The principles and advantages of this solution are:
[0009] To facilitate module disassembly, this solution sets the upper and lower cold plates as a single cooling plate that matches the number of modules, which can improve the cooling effect of the modules and expand the heat dissipation area. Only one water inlet and outlet are designed as a whole. The modules are connected in parallel or in series through water pipes to reduce the space for water pipe layout. The water nozzle is integrated on the front plate of the module, which makes it easier for the module to be integrated with the water-cooled plate and connected with the water pipe, making the operation easier. In addition, the water-cooled pipe is directly integrated into the end plate, which effectively reduces the difficulty of arranging the internal structure of the battery pack and improves the volume utilization rate, so that the module can be integrated with the water-cooled plate and installed in the box separately, which is convenient for module disassembly, reduces maintenance damage, and reduces maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 This is a schematic diagram of a module integration structure of a module end plate structure with integrated water cooling pipes according to the utility model;
[0011] Figure 2 This is a schematic diagram of a module structure of a module end plate structure with integrated water cooling pipes according to the utility model;
[0012] Figure 3 The utility model is a schematic diagram of an end plate structure of a module end plate structure with integrated water cooling pipeline. DETAILED DESCRIPTION
[0013] The following is further described in detail through specific implementation methods:
[0014] The reference numerals in the drawings of the specification include: box body 1, cooling water inlet 2, module 3, soft-pack battery cell 4, upper cold plate 5, lower cold plate 6, front end plate 7, water nozzle 8, water cooling pipe 9, positioning groove 10, and rear end plate 11.
[0015] The embodiment is basically as shown in the attached Figure 1 As shown: A module end plate structure with integrated water cooling pipes, including a battery pack box 1 with an overall square structure, and a cooling water inlet 2 is opened on the box 1. In this embodiment, the cooling water inlet 2 includes two, namely a water inlet and a water outlet. A plurality of modules 3 with an overall square structure are integrated in the box 1, and the modules 3 are connected in parallel or in series through water pipes. In this embodiment, the length of the water pipe is 41±0.3mm to ensure that the modules 3 can be connected through the water pipe. The water pipes are installed on both sides of the box 1, thereby reducing the complexity of the connection and improving the installation efficiency. Among them, the water pipe includes an inlet pipe and an outlet pipe. The head end of the inlet pipe is connected to the water inlet of the cooling water port 2, and the outlet end of the outlet pipe is connected to the water outlet. The coolant is transported to the water pipe through the cooling water port 2, so as to circulate the coolant to the module 3 to achieve the effect of heat dissipation and cooling. At the same time, the whole package has only one water inlet and one water outlet, which reduces the structural complexity of the battery pack, reduces the space for water pipe layout, improves the utilization rate of internal space, and is more conducive to production operation and maintenance.
[0016] As attached Figure 2 As shown, the module 3 includes a soft-pack battery cell 4, and an upper cold plate 5 is fixedly installed on the upper end of the soft-pack battery cell 4 by a thermally conductive structural adhesive. The size of the upper cold plate 5 can completely cover the soft-pack battery cell 4. A lower cold plate 6 is fixedly installed on the lower end of the soft-pack battery cell 4 by a thermally conductive structural adhesive. The upper and lower cold plate structures are utilized to effectively improve the heat dissipation capacity and ensure the heat dissipation effect. At the same time, the lower cold plate 6 is fixedly installed on the bottom of the box by FDS nails. By setting the upper cold plate 5 and the lower cold plate 6 to the same size as a single soft-pack battery cell 4, it is easier to integrate the module with the water-cooled plate alone, and can be independently installed in the box 1, which is convenient for disassembly and replacement of the module, and is more conducive to maintenance operations, so as to reduce the damage rate and reduce maintenance costs.
[0017] A front end plate 7 is fixedly provided on one side of the soft-pack battery cell 4, and a rear end plate 11 is provided on the other side of the soft-pack battery cell 4, wherein the front end plate 7 is respectively connected to the upper cold plate 5 and the lower cold plate 6, so that the coolant flows to the upper cold plate 5 and the lower cold plate 6 through the front end plate 7, and the rear end plate 11 is connected to the soft-pack battery cell 4 through the end foam, and the rear end plate 11 is not connected to the upper cold plate 5 and the lower cold plate 6. In this embodiment, a water nozzle 8 is provided on the front end plate 7, and the water nozzle 8 is connected to the water pipe arranged in the box body 1. The water nozzle 8 on each front end plate 7 includes two ends, namely an inlet end connected to the water inlet pipe, and an outlet end connected to the water outlet pipe, so that the coolant is circulated on the upper cold plate 5 and the lower cold plate 6 through the water nozzle 8 to achieve the effect of heat dissipation and cooling. At the same time, combined with the attached Figure 3 As shown, a water cooling pipe 9 is integrated in the front end plate 7 , and the coolant is transmitted to the upper cold plate 5 and the lower cold plate 6 through the water cooling pipe 9 .
[0018] In this embodiment, as shown in the attached Figure 3 As shown, a positioning groove 10 is provided in the front end plate 7, and the water cooling pipe 9 is installed in the positioning groove 10, and the water cooling pipe 9 is positioned, thereby reducing the difficulty of arranging the internal structure of the battery pack, and directly integrating the water cooling pipe 9 in the end plate 7 to improve the volume utilization rate. In this embodiment, the thickness of the front end plate 7 is set to 35±0.3mm, which is convenient for directly integrating the water cooling pipe 9 in the front end plate 7, while reducing the volume of the front end plate 7, thereby simplifying the module structure, improving the volume grouping rate, and maximizing the space utilization rate.
[0019] In this embodiment, the upper cold plate 5 and the lower cold plate 6 are set to the same size as a single soft-pack battery cell 4, so that a single soft-pack battery cell 4 can be integrated with the water-cooled plate. At the same time, the modules are connected by water pipes to reduce the space for arranging the water pipes, making it easier for the CTP module to be integrated with the split water-cooled plate in the box 1, facilitating module disassembly, maintenance or replacement, reducing the probability of module damage and maintenance costs. In addition, the positioning groove 10 in the module end plate 7 is used to position the water-cooled pipe 9, reducing the difficulty of arranging the internal structure of the battery pack and effectively improving the volume utilization rate.
[0020] At the same time, in this embodiment, by combining the split modules with the upper and lower double cold plate structures, the heat dissipation efficiency is effectively improved, the internal temperature of the battery pack is reduced, and the safety and stability of the battery pack are improved, thereby overcoming the prejudice in the prior art that only large-area cooling plates can guarantee heat dissipation effects.
[0021] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.
Claims
1. A module end plate structure with integrated water cooling pipe, characterized in that: It comprises a box body, on which a cooling water inlet is provided; a plurality of modules are provided in the box body, and the modules are connected by a water pipe, and the head end of the water pipe is connected to the cooling water inlet; the module comprises a soft-pack battery cell, an upper cold plate is provided at the upper end of the soft-pack battery cell, and a lower cold plate is provided at the lower end of the soft-pack battery cell, and the lower cold plate is connected to the bottom of the box body; a front end plate is provided on one side of the soft-pack battery cell, and the front end plate is respectively connected to the upper cold plate and the lower cold plate; a water nozzle is provided on the front end plate, and the water nozzle is connected to the water pipe, and a water cooling pipe is provided in the front end plate, and the water cooling pipe is connected to the water nozzle.
2. The module end plate structure with integrated water cooling pipe according to claim 1, characterized in that: A positioning groove is provided in the front end plate, and the water cooling pipe is arranged in the positioning groove.
3. The module end plate structure with integrated water cooling pipe according to claim 1, characterized in that: The cooling water inlets include two, namely a water inlet and a water outlet; the water pipe includes a water inlet pipe and a water outlet pipe, the water inlet pipe is connected to the water inlet, and the water outlet pipe is connected to the water outlet.
4. The module end plate structure with integrated water cooling pipe according to claim 3, characterized in that: The water nozzle comprises two ends, namely an inlet end connected to the water inlet pipe and an outlet end connected to the water outlet pipe.
5. The module end plate structure with integrated water cooling pipe according to claim 1, characterized in that: The lower cold plate is fixed to the bottom of the box body by FDS nails.
6. The module end plate structure with integrated water cooling pipe according to claim 1, characterized in that: The upper cold plate is arranged on the soft-pack battery core through a heat-conducting structural adhesive.
7. The module end plate structure with integrated water cooling pipe according to claim 1, characterized in that: The lower cold plate is arranged at the bottom of the soft-pack battery cell through a heat-conducting structural adhesive.
8. The module end plate structure with integrated water cooling pipe according to claim 1, characterized in that: The thickness of the front end plate is 35±0.3 mm.
9. The module end plate structure with integrated water cooling pipe according to claim 1, characterized in that: The length of the water pipe is 41±0.3 mm.
10. The module end plate structure with integrated water cooling pipe according to claim 1, characterized in that: A rear end plate is also provided on the other side of the soft-pack battery cell.