Battery pack module

Abstract

The utility model discloses a battery pack module which comprises a box body and a pipeline assembly, a plurality of single battery cells are arranged in the box body, a heat exchanger is arranged between every two adjacent single battery cells, and a liquid inlet and a liquid outlet are formed in each heat exchanger; the pipeline assembly comprises a liquid inlet pipe body and a liquid outlet pipe body which are formed by communicating a plurality of three-way movable joints, the liquid inlet pipe body is communicated with the liquid inlet, and the liquid outlet pipe body is communicated with the liquid outlet; the three-way movable joint comprises a three-way head and a fixing nut, the three-way head is provided with a first port, a second port and a third port, the first port is used for being communicated with the liquid inlet or the liquid outlet, the periphery, close to the second port, of the three-way head is provided with external threads, the periphery of the third port is sleeved with the fixing nut, and internal threads of the fixing nut are matched with the external threads. According to the technical scheme, pipelines in the battery pack module can be tidy and ordered, and the assembly efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and particularly relates to a battery pack module. Background Art

[0002] With the continuous improvement of environmental protection requirements, new energy vehicles will become the mainstream direction of the development of the automotive industry in the future. Among them, the most representative electric vehicle, the temperature environment inside the battery pack has a great impact on the overall performance of the power battery, including the capacity, power, charge and discharge efficiency, safety and life of the battery. Therefore, it is necessary to introduce a thermal management system to heat the battery at low temperature, dissipate heat at high temperature and manage heat preservation.

[0003] At present, many battery pack structures adopt a liquid cooling system to cool the single cells. The heat exchanger is attached to the single cells for heat exchange to take away the heat. However, due to the large number of single cells inside the battery pack, the heat exchanger needs to connect a large number of pipelines. Thus, the pipelines inside the battery pack are intricate, which not only affects the assembly efficiency, but also increases the production cost of the pipelines. Summary of the Utility Model

[0004] The main purpose of the utility model is to propose a battery pack module, aiming to make the pipelines inside the battery pack module neat and orderly, improve the utilization rate of the internal space of the battery pack module, and improve the assembly efficiency of the pipelines.

[0005] To achieve the above purpose, the battery pack module proposed by the utility model includes:

[0006] A box body, in which a plurality of single cells are arranged, and a heat exchanger is arranged between every two adjacent single cells. The heat exchanger is provided with a liquid inlet and a liquid outlet.

[0007] A pipeline assembly, which includes an inlet pipe body and an outlet pipe body connected by a plurality of three-way union joints. The inlet pipe body is connected to the liquid inlet, and the outlet pipe body is connected to the liquid outlet.

[0008] The three-way union joint includes a three-way head and a fixing nut. The three-way head has a first port, a second port and a third port respectively. The first port is used to connect the liquid inlet or the liquid outlet. The outer circumference of the three-way head near the second port has an external thread, and the fixing nut is sleeved on the outer circumference at the third port. The internal thread of the fixing nut is adapted to the external thread.

[0009] Preferably, a nylon snap ring is arranged between the fixing nut and the three-way head.

[0010] Preferably, a sealing gasket is arranged at the port of the second end of the three-way head.

[0011] Preferably, an inlet liquid main flow path and a plurality of inlet liquid branch flow paths are formed inside the inlet liquid pipeline. Each of the inlet liquid branch flow paths is communicated with the inlet liquid main flow path and is communicated with each of the inlet ports. The coolant in the inlet liquid main flow path can be divided into each of the inlet liquid branch flow paths to cool each of the heat exchangers.

[0012] Preferably, an outlet liquid main flow path and a plurality of outlet liquid branch flow paths are formed inside the outlet liquid pipeline. Each of the outlet liquid branch flow paths is communicated with the outlet liquid main flow path and is communicated with each of the outlet ports.

[0013] Preferably, a flanging is provided on the three-way joint, and a fastening plate is installed on the box body. The fastening plate arches on the box body and is provided with a plurality of mounting holes. Each of the three-way joints can pass through the mounting holes, and the flanging is limited between the fastening plate and the side wall of the box body.

[0014] Preferably, the fastening plate includes a first splicing plate and a second splicing plate. A first splicing hole is formed on the first splicing plate, and a second splicing hole is formed on the second splicing plate. The first splicing hole and the second splicing hole can be spliced to form the mounting hole.

[0015] Preferably, both the first splicing plate and the second splicing plate are respectively connected and formed by a plurality of straight plates vertically bent in sequence.

[0016] Preferably, both the first splicing plate and the second splicing plate are fixed on the box body by screws.

[0017] Compared with the prior art, the technical solution of the present utility model uses a plurality of three-way unions to be spliced in sequence to form an inlet liquid pipe body or an outlet liquid pipe body, cancels the complex pipeline design, and utilizes the characteristics of the simple structure and convenient assembly of the three-way union. By adopting the threaded connection method, it realizes the one-time connection of a plurality of monomer cells arranged in parallel to introduce the coolant, and the three-way union can be infinitely extended and spliced, and can flexibly adapt to the cooling requirements of the monomer cells inside the battery pack with different widths. In this way, the pipelines inside the battery pack are neat and orderly through the sequential connection of a plurality of three-way unions, improving the utilization rate of the internal space of the battery pack module, and the overall structure is simple, easy to implement, the assembly process is simple, and the assembly efficiency of the staff is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the inlet liquid pipe body and the fastening plate in the battery pack module of the present utility model;

[0019] Figure 2 is Figure 1 exploded view of;

[0020] Figure 3 is a schematic structural diagram of the three-way union in the battery pack module of the present utility model;

[0021] Figure 4 This is a schematic structural view of the three-way union in the battery pack module of the present utility model from another perspective;

[0022] Figure 5 This is an exploded view of the three-way union in the battery pack module of the present utility model;

[0023] Figure 6 This is an external view display diagram of the battery pack module of the present utility model;

[0024] Figure 7 This is a schematic internal structure view of the battery pack module of the present utility model;

[0025] Figure 8 This is a schematic structural view of the liquid inlet pipe body and the liquid outlet pipe body in the battery pack module of the present utility model.

[0026] Explanation of the reference numerals in the attached drawings: 100, box body; 200, single cell; 300, heat exchanger; 400, liquid inlet pipe body; 500, liquid outlet pipe body; 600, three-way union; 601, first port; 602, second port; 603, third port; 610, three-way head; 620, fixing nut; 630, nylon snap ring; 640, gasket; 650, flanging; 700, fastening plate; 701, mounting hole; 710, first splicing plate; 720, second splicing plate; 711, first splicing hole; 721, second splicing hole. Specific embodiments

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0028] Please refer to Figures 1 to 8 , the present utility model provides a battery pack module.

[0029] The battery pack module includes a box body 100 and a pipeline assembly. A plurality of single cells 200 are arranged in the box body 100. A heat exchanger 300 is arranged between every two adjacent single cells 200. The heat exchanger 300 is provided with a liquid inlet and a liquid outlet. The pipeline assembly includes a liquid inlet pipe body 400 and a liquid outlet pipe body 500 which are connected by a plurality of three-way unions 600. The liquid inlet pipe body 400 is connected to the liquid inlet, and the liquid outlet pipe body 500 is connected to the liquid outlet. The three-way union 600 includes a three-way head 610 and a fixing nut 620. The three-way head 610 has a first port 601, a second port 602, and a third port 603 respectively. The first port 601 is used to connect to the liquid inlet or the liquid outlet. The outer periphery of the three-way head 610 near the second port 602 has an external thread. A fixing nut 620 is sleeved on the outer periphery at the third port 603, and the internal thread of the fixing nut 620 is adapted to the external thread.

[0030] Specifically, the heat exchanger 300 can be made of aluminum material or other materials with high thermal conductivity, as long as it can take away the heat of the single cell 200 through the heat exchanger 300. The liquid inlet and the liquid outlet of the heat exchanger 300 are respectively connected to an external coolant source, and the single cell 200 is cooled by liquid cooling. Taking the liquid inlet pipe body 400 as an example, during assembly, the first port 601 of each three-way head 610 is connected to the liquid inlet of the heat exchanger 300, and the external thread on the second port 602 of the three-way head 610 can be threadedly connected to the fixing nut 620 in the previous three-way union 600 adjacent to it. In this way, by successive progression, coolant can be introduced into each heat exchanger 300. Taking the liquid outlet pipe body 500 as an example, during the assembly of the liquid outlet pipe body 500, the first port 601 of each three-way head 610 is connected to the liquid outlet of the heat exchanger 300, and the external thread on the second port 602 of the three-way head 610 can be threadedly connected to the fixing nut 620 in the previous three-way union 600 adjacent to it. In this way, by successive progression, the assembly is completed. In order to avoid complex pipeline design, the present utility model uses a plurality of three-way unions 600 to be spliced in sequence to form the liquid inlet pipe body 400 or the liquid outlet pipe body 500, cancels the complex pipeline design, and utilizes the characteristics of the simple structure and convenient assembly of the three-way union 600. By adopting the threaded connection method, coolant can be introduced into a plurality of juxtaposed single cells 200 at one time, and the three-way union 600 can be infinitely extended and spliced, and can flexibly adapt to the cooling requirements of the single cells 200 with different widths inside the battery pack. In this way, through the successive connection of a plurality of three-way unions 600, the pipelines inside the battery pack are neat and orderly, the space utilization rate inside the battery pack module is improved, and the overall structure is simple, easy to implement, the assembly process is simple, and the assembly efficiency of the staff is high.

[0031] Please refer to Figures 3 to 5, preferably, a nylon snap ring 630 is provided between the fixing nut 620 and the tee head 610. The nylon snap ring 630 can ensure the sealed connection between the fixing nut 620 and the tee head 610 by virtue of its elasticity. During the process of successively connecting the tee heads 610, the sealing effect of the connection between each tee head 610 can be ensured, preventing the coolant from overflowing.

[0032] Please refer to Figures 3 to 5 , to further improve the sealing effect, preferably, a gasket 640 is provided at the port of the second end of the tee head 610. Among them, the gasket 640 can play a role in the sealed connection of two adjacent tee unions 600, further ensuring the sealing effect and preventing the coolant from overflowing.

[0033] Preferably, an inlet liquid main flow path and a plurality of inlet liquid branch flow paths are formed inside the inlet liquid pipeline. Each inlet liquid branch flow path is respectively communicated with the inlet liquid main flow path and is communicated with each inlet liquid port. The coolant in the inlet liquid main flow path can be shunted into each inlet liquid branch flow path to cool each heat exchanger 300. Specifically, a plurality of tee unions 600 in the inlet liquid pipe body 400 are connected in sequence. An inlet liquid main flow path and a plurality of inlet liquid branch flow paths communicating with the inlet liquid main flow path are formed inside the inlet liquid pipe body 400. Each inlet liquid branch flow path is communicated with a corresponding heat exchanger 300. When the coolant is introduced, the coolant in the inlet liquid main flow path is shunted into each inlet liquid branch flow path, and then flows into each heat exchanger 300 respectively to quickly cool each single cell 200. In this way, the cooling efficiency is high, the uniformity is good, and the operation is more convenient.

[0034] Preferably, an outlet liquid main flow path and a plurality of outlet liquid branch flow paths are formed inside the outlet liquid pipeline. Each outlet liquid branch flow path is respectively communicated with the outlet liquid main flow path and is communicated with each outlet liquid port. Specifically, a plurality of tee unions 600 in the outlet liquid pipe body 500 are connected in sequence. An outlet liquid main flow path and a plurality of outlet liquid branch flow paths communicating with the outlet liquid main flow path are formed inside the outlet liquid pipe body 500. Each outlet liquid branch flow path is connected to a corresponding heat exchanger 300. The coolant in the heat exchanger 300 enters each inlet liquid branch flow path, converges to the outlet liquid main flow path and flows out. In this way, the cooling efficiency is high, the uniformity is good, and the operation is more convenient.

[0035] Please refer to Figure 1 、 Figure 4 and Figure 6, preferably, a flanging 650 is provided on the three-way joint 610, and a fastening plate 700 is installed on the box body 100. The fastening plate 700 arches on the box body 100 and is provided with a plurality of mounting holes 701. Each three-way joint 610 can pass through the mounting holes 701, and the flanging 650 is limited between the fastening plate 700 and the side wall of the box body 100. In this way, the three-way joint 610 is clamped on the fastening plate 700 through the flanging 650. Due to the structural limitations of the flanging 650 and the fastening plate 700, the three-way joint 610 can be stably installed on the box body 100 to prevent the three-way joint 610 from slipping out, and the structure is simple and reliable.

[0036] Please refer to Figures 1 to 2 , preferably, the fastening plate 700 includes a first splicing plate 710 and a second splicing plate 720. A first splicing hole 711 is formed on the first splicing plate 710, and a second splicing hole 721 is formed on the second splicing plate 720. The first splicing hole 711 and the second splicing hole 721 can be spliced to form the mounting hole 701. During assembly, the first port 601 of the three-way joint 610 can be first connected to the liquid inlet of the heat exchanger 300, and then the first splicing plate 710 is installed on the box body 100 so that the first splicing hole 711 is located at the upper peripheral edge of the three-way joint 610. Finally, the second splicing plate 720 is installed on the box body 100 so that the first splicing hole 711 is located at the lower peripheral edge of the three-way joint 610. At this time, the first splicing hole 711 and the second splicing hole 721 form a mounting hole 701 for the three-way joint 610 to penetrate. In this way, the structure of the fastening plate 700 is simple, the assembly process is simple, the assembly efficiency is high, and the three-way union 600 can be stably fixed to ensure the stability of the assembly of each three-way union 600.

[0037] Please refer to Figure 2 , preferably, both the first splicing plate 710 and the second splicing plate 720 are respectively composed of a plurality of straight plates vertically bent in sequence. The first splicing plate 710 and the second splicing plate 720 can be rectangular plates or square plates, both of which are acceptable.

[0038] Please refer to Figure 2 and Figure 6 , preferably, both the first splicing plate 710 and the second splicing plate 720 are fixed to the box body 100 by screws. When the staff assembles the first splicing plate 710 and the second splicing plate 720, they can fix them to the box body 100 by passing screws through the first splicing plate 710 and the second splicing plate 720. A plurality of screw holes can be provided on the first splicing plate 710 and the second splicing plate 720, and they are arranged at equal intervals on the first splicing plate 710 or the second splicing plate 720.

[0039] The above are only alternative embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structural transformation made by using the content of the specification and drawings of the present utility model under the inventive concept of the present utility model, or any direct / indirect application in other related technical fields shall be included within the patent protection scope of the present utility model.

Claims

1. A battery pack module, characterized in that, The battery pack module includes: A box body, in which a plurality of single cells are arranged. A heat exchanger is arranged between every two adjacent single cells. The heat exchanger is provided with a liquid inlet and a liquid outlet. A pipeline assembly, which includes an inlet liquid pipe body and an outlet liquid pipe body formed by connecting a plurality of three-way unions. The inlet liquid pipe body is connected to the liquid inlet, and the outlet liquid pipe body is connected to the liquid outlet. The three-way union includes a three-way head and a fixing nut. The three-way head has a first port, a second port, and a third port respectively. The first port is used to connect the liquid inlet or the liquid outlet. The outer periphery of the three-way head near the second port has an external thread. The fixing nut is sleeved on the outer periphery at the third port, and the internal thread of the fixing nut is adapted to the external thread.

2. The battery pack module according to claim 1, characterized in that, A nylon snap ring is arranged between the fixing nut and the three-way head.

3. The battery pack module according to claim 1, wherein A gasket is arranged at the port of the second end of the three-way head.

4. The battery pack module according to claim 1, wherein An inlet liquid main flow path and a plurality of inlet liquid branch flow paths are formed inside the inlet liquid pipe body. Each of the inlet liquid branch flow paths is respectively communicated with the inlet liquid main flow path and is communicated with each of the liquid inlets. The coolant in the inlet liquid main flow path can be divided into each of the inlet liquid branch flow paths to cool each of the heat exchangers.

5. The battery pack module according to claim 1, characterized in that, An outlet liquid main flow path and a plurality of outlet liquid branch flow paths are formed inside the outlet liquid pipe body. Each of the outlet liquid branch flow paths is respectively communicated with the outlet liquid main flow path and is communicated with each of the liquid outlets.

6. The battery pack module according to claim 1, wherein A flanging is arranged on the three-way head. A fastening plate is installed on the box body. The fastening plate arches on the box body and is provided with a plurality of mounting holes. Each of the three-way heads can pass through the mounting holes, and the flanging is limited between the fastening plate and the side wall of the box body.

7. The battery pack module according to claim 6, characterized in that, The fastening plate includes a first splicing plate and a second splicing plate. A first splicing hole is formed on the first splicing plate, and a second splicing hole is formed on the second splicing plate. The first splicing hole and the second splicing hole can be spliced to form the mounting hole.

8. The battery pack module according to claim 7, wherein, Both the first splicing plate and the second splicing plate are respectively composed of a plurality of straight plates vertically bent in sequence.

9. The battery pack module according to claim 7, wherein, Both the first splicing plate and the second splicing plate are fixed on the box body by screws.

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