Battery case with temperature control system

Abstract

The invention relates to the technical field of power battery cooling, in particular to a battery shell with a temperature control system, which comprises a battery outer shell, a plurality of groups of partitioned battery mounting plates are sequentially arranged in the battery outer shell from left to right, and independent liquid cooling supply modules are correspondingly arranged at the lower ends of the battery mounting plates. A first liquid cooling pipeline groove and a second liquid cooling pipeline groove are formed in the front end and the rear end in the battery outer shell, a circulating liquid inlet pipe fixed to the battery outer shell is arranged in the first liquid cooling pipeline groove, and a circulating liquid outlet pipe fixed to the battery outer shell is arranged in the second liquid cooling pipeline groove; the circulating liquid inlet pipe and the circulating liquid outlet pipe are communicated with each other at the same end, each independent liquid cooling module comprises a heat dissipation and temperature conduction plate and a cooling pipe group which is arranged at the lower end of the heat dissipation and temperature conduction plate in a matched manner, and the cooling pipe group is communicated in the circulating liquid inlet pipe and the circulating liquid outlet pipe.

Description

Technical Field

[0001] The present invention relates to the technical field of power battery cooling, and in particular to a battery shell with a temperature control system. Background Art

[0002] Power batteries are important components for driving electric vehicles. They can store and release large amounts of electrical energy for vehicle operation. As the global demand for sustainable transportation increases, power batteries have become one of the core technologies in the field of electric vehicles. Power batteries convert electrical energy into chemical energy through chemical reactions, and convert chemical energy back into electrical energy when needed. They are composed of positive electrodes, negative electrodes and electrolytes, and each part has a specific function. A series of chemical reactions will occur in power batteries during the charging and discharging process, and most of these chemical reactions are accompanied by the generation of heat. During the discharge process, the positive electrode releases lithium ions, which migrate to the negative electrode through the electrolyte to form an electric current. This process generates heat. In order to avoid thermal runaway caused by heat accumulation, a suitable thermal management system is needed to dissipate heat from the battery. An efficient battery thermal management system improves the operating efficiency of the battery by thermally managing the lithium-ion battery, and improves the safety and reliability of the battery, slows down the aging rate of the battery, and extends its service life.

[0003] At present, the Chinese patent with the announcement number CN211376879U discloses a power battery liquid cooling device and a power battery system. When the power battery liquid cooling device performs heat exchange with the battery cell module, the coolant first flows from the total water inlet through the water inlet side pipe and the liquid cooling channel in sequence, so that the coolant performs heat exchange with the battery cell module when flowing through the liquid cooling channel. When the coolant completes the heat exchange, it flows out of the total water outlet through the water outlet side pipe. In addition, by setting a plurality of liquid cooling plates arranged in sequence, since the adjacent two liquid cooling plates are connected through a hose and a three-way joint, it is beneficial to eliminate the heat between the adjacent two liquid cooling plates. stress so that the power battery liquid cooling device maintains a better flatness, so that when the power battery liquid cooling device and the battery cell module are heat exchanged, the power battery liquid cooling device can have good contact with the battery cell module. Although this device avoids the problem of uneven heating of the battery cell module caused by the use of hard pipes to connect the liquid cooling plate in the prior art, its cooling pipeline design is relatively traditional and does not match the modular design of today's power batteries. The liquid is supplied uniformly through the main pipeline. Once a part of the pipeline has a problem, the cooling and liquid supply system of the entire power battery will be shut down. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to provide a battery case with a temperature control system, and the above technical purpose is achieved through the following technical solutions: A battery shell with a temperature control system comprises a battery shell body, wherein a plurality of groups of zoned battery mounting plates are arranged in sequence from left to right inside the battery shell body, an independent liquid cooling supply module is correspondingly arranged at the lower end of the battery mounting plate, a first liquid cooling pipeline groove and a second liquid cooling pipeline groove are arranged at the front and rear ends inside the battery shell body, a circulating liquid inlet pipe fixed to the battery shell body is arranged inside the first liquid cooling pipeline groove, a circulating liquid outlet pipe also fixed to the battery shell body is arranged inside the second liquid cooling pipeline groove, the circulating liquid inlet pipe and the circulating liquid outlet pipe are connected to each other at the same end, and the independent liquid cooling module comprises a heat dissipation and thermal conduction plate, and a cooling pipe group matchedly arranged at the lower end of the heat dissipation and thermal conduction plate, and the cooling pipe group is connected to the circulating liquid inlet pipe and the circulating liquid outlet pipe.

[0005] Furthermore, a module liquid inlet pipe is provided at the bottom end of the battery casing, and the module liquid inlet pipe is arranged in the gap space between the group of zoned battery mounting plates. One end of the module liquid inlet pipe is connected to the pipeline of the circulating liquid inlet pipe, and a liquid inlet control pump is fixedly provided at the liquid inlet end of the module liquid inlet pipe.

[0006] Furthermore, a module liquid outlet pipe is provided at the bottom end of the battery casing, and the module liquid outlet pipe is also provided in the gap space between the groups of zoned battery mounting plates. The module liquid outlet pipe is provided on one side of the module liquid inlet pipe, and one end of the module liquid outlet pipe is connected to the pipeline of the circulating liquid outlet pipe. A liquid outlet control pump is fixedly provided at the liquid outlet end of the module liquid inlet pipe.

[0007] Furthermore, the independent liquid cooling module also includes a heat dissipation sealing cover, which is sealed and fixed to the lower end of the heat dissipation plate. A one-way liquid cooling groove is provided inside the heat dissipation sealing cover, and the module liquid inlet pipe and the module liquid outlet pipe are respectively connected to the two ends of one side of the heat dissipation sealing cover.

[0008] Furthermore, the number of the heat dissipation sealing covers is set to two groups, and the two groups of heat dissipation sealing covers are respectively fixed to the front and rear sides of the bottom end of the heat dissipation and temperature conduction plate.

[0009] Furthermore, a circulation connecting pipe is fixed between the circulation liquid inlet pipe and the circulation liquid outlet pipe, and an emergency liquid discharge port is provided in the circulation connecting pipe.

[0010] In summary, the present invention has the following beneficial effects: ① The liquid cooling device disclosed in the present invention has an independent partitioned liquid cooling supply system, which matches the current modular design concept of power batteries. According to the number of power battery modules, a corresponding number of liquid cooling industrial branches are selected and set to ensure that the liquid cooling supply system under each group of power batteries can maintain operation independently. The liquid supply and discharge conditions of the liquid cooling supply system at each position are stable, and when maintaining it, it is only necessary to select the corresponding partition for maintenance; ② In the liquid cooling device disclosed in the present invention, each heat dissipation partition is equipped with two sets of independent liquid supply systems, which can effectively improve the liquid cooling effect and ensure that the battery temperature is effectively controlled. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application, but do not constitute an improper limitation of the present invention. In the drawings: Figure 1 It is a top view of the present invention; Figure 2 The present invention Figure 1 The enlarged schematic diagram of point A in the middle; Figure 3 It is a schematic diagram of the heat dissipation sealing cover in the present invention.

[0012] In the figure, 1. battery outer shell; 2. battery mounting plate; 3. first liquid cooling pipeline groove; 4. second liquid cooling pipeline groove; 5. circulating liquid inlet pipe; 6. circulating liquid outlet pipe; 7. heat dissipation and temperature conduction plate; 8. module liquid inlet pipe; 9. liquid inlet control pump; 10. module liquid outlet pipe; 11. liquid outlet control pump; 12. heat dissipation sealing cover; 13. liquid cooling tank; 14. circulating connecting pipe; 15. emergency drain port. DETAILED DESCRIPTION

[0013] The above and other technical contents, features and effects of the present invention are described in detail below with reference to the attached Figure 1 To Attachment Figure 3 The detailed description of the embodiments will clearly show that the structural contents mentioned in the following embodiments are all based on the drawings in the specification.

[0014] Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings. Example

[0015] A battery case with a temperature control system includes a battery case body 1, the interior of the battery case body 1 is used to place a power battery, the battery case body 1 serves as a bearing structure for the power battery, and a plurality of groups of zoned battery mounting plates 2 are arranged in sequence from left to right inside the battery case body 1. Since today's power batteries are also modular in design, the modular power batteries can be placed in different battery mounting plates 2.

[0016] A first liquid cooling pipeline groove 3 and a second liquid cooling pipeline groove 4 are provided at the front and rear ends inside the battery outer shell 1. One end of the first liquid cooling pipeline groove 3 is a liquid inlet, and one end of the second liquid cooling pipeline groove 4 is a liquid outlet. The liquid inlet and the liquid outlet are both used to connect the external coolant. A circulating liquid inlet pipe 5 fixed to the battery outer shell 1 is provided inside the first liquid cooling pipeline groove 3, and a circulating liquid outlet pipe 6 also fixed to the battery outer shell 1 is provided inside the second liquid cooling pipeline groove 4. The circulating liquid inlet pipe 5 and the circulating liquid outlet pipe 6 are connected to each other at the same end, and a circulating connecting pipe 14 is fixed therebetween. An emergency drain port 15 is provided in the circulating connecting pipe 14. In the above-mentioned pipeline structure, the three groups of pipelines of the circulating liquid inlet pipe 5, the circulating liquid outlet pipe 6, and the circulating connecting pipe 14 together constitute the total pipeline of this embodiment. The emergency drain port 15 is provided at the circulating connecting pipe 14, and the coolant can be discharged urgently when the system pipeline pressure is abnormal or leakage occurs, so that the pipeline is emptied.

[0017] An independent liquid cooling supply module is correspondingly provided at the lower end of the battery mounting plate 2. The independent liquid cooling module includes a heat dissipation and temperature conduction plate 7, and a cooling pipe group matchedly arranged at the lower end of the heat dissipation and temperature conduction plate 7. The cooling pipe group is connected to the circulating liquid inlet pipe 5 and the circulating liquid outlet pipe 6. Among them, the cooling pipe group is composed of a module liquid inlet pipe 8 and a module liquid outlet pipe 10. The module liquid inlet pipe 8 and the module liquid outlet pipe 10 are branches on the main pipeline.

[0018] Preferably, a module liquid inlet pipe 8 is provided at the bottom end of the battery casing, and the module liquid inlet pipe 8 is arranged in the gap space between each group of zoned battery mounting plates 2. One end of the module liquid inlet pipe 8 is connected to the pipeline of the circulating liquid inlet pipe 5, and a liquid inlet control pump 9 is fixedly provided at the liquid inlet end of the module liquid inlet pipe 8.

[0019] Preferably, a module liquid outlet pipe 10 is provided at the bottom end of the battery casing, and the module liquid outlet pipe 10 is also provided in the gap space between each group of zoned battery mounting plates 2. The module liquid outlet pipe 10 is provided on one side of the module liquid inlet pipe 8, and one end of the module liquid outlet pipe 10 is connected to the pipeline of the circulating liquid outlet pipe 6. A liquid outlet control pump 11 is fixedly provided at the liquid outlet end of the module liquid inlet pipe 8.

[0020] Through the above branch structure, the liquid inlet control pump 9 transports the coolant in the circulating liquid inlet pipe 5 to the module liquid inlet pipe 8, and the liquid outlet control pump 11 transports the coolant to the circulating liquid outlet pipe 6.

[0021] The independent liquid cooling module also includes a heat dissipation sealing cover 12, which is sealed and fixed at the lower end of the heat dissipation thermal conductive plate 7. The number of heat dissipation sealing covers 12 is set to two groups. The two groups of heat dissipation sealing covers 12 are respectively fixed at the front and rear sides of the bottom of the heat dissipation thermal conductive plate 7, and are respectively used to control the temperature in the front and rear two groups of partitions of the heat dissipation thermal conductive plate 7. The interior of the heat dissipation sealing cover 12 is provided with a one-way liquid cooling groove 13, and the module liquid inlet pipe 8 and the module liquid outlet pipe 10 are respectively connected to the two end positions on one side of the heat dissipation sealing cover 12. When the coolant flows through the heat dissipation sealing cover 12, the heat on the heat dissipation thermal conductive plate 7 is taken away to achieve the purpose of heat dissipation and cooling.

[0022] The above is a further detailed description of the present invention in combination with a specific implementation method, and it cannot be determined that the specific implementation of the present invention is limited to this; for technical personnel in the technical field to which the present invention belongs and related technical fields, based on the technical solution of the present invention, the expansion and replacement of operating methods and data should all fall within the protection scope of the present invention.

Claims

1. A battery case with a temperature control system, characterized in that: The invention comprises a battery outer shell (1), wherein a plurality of group-zoned battery mounting plates (2) are sequentially arranged inside the battery outer shell (1) from left to right, and an independent liquid cooling supply module is correspondingly arranged at the lower end of the battery mounting plate (2), and a first liquid cooling pipeline groove (3) and a second liquid cooling pipeline groove (4) are arranged at the front and rear ends inside the battery outer shell (1), and a circulating liquid inlet pipe (5) fixed to the battery outer shell (1) is arranged inside the first liquid cooling pipeline groove (3), and a circulating liquid outlet pipe (6) also fixed to the battery outer shell (1) is arranged inside the second liquid cooling pipeline groove (4), and the circulating liquid inlet pipe (5) and the circulating liquid outlet pipe (6) are connected to each other at the same end, and the independent liquid cooling module comprises a heat dissipation and thermal conduction plate (7), and a cooling pipe group matchedly arranged at the lower end of the heat dissipation and thermal conduction plate (7), and the cooling pipe group is connected to the circulating liquid inlet pipe (5) and the circulating liquid outlet pipe (6).

2. A battery case with a temperature control system according to claim 1, characterized in that: A module liquid inlet pipe (8) is provided at the bottom end of the battery housing. The module liquid inlet pipe (8) is provided in the gap space between the groups of zoned battery mounting plates (2). One end of the module liquid inlet pipe (8) is connected to the pipeline of the circulating liquid inlet pipe (5). A liquid inlet control pump (9) is fixedly provided at the liquid inlet end of the module liquid inlet pipe (8).

3. A battery case with a temperature control system according to claim 2, characterized in that: A module liquid outlet pipe (10) is provided at the bottom end of the battery housing. The module liquid outlet pipe (10) is also provided at the gap space between the group-type battery mounting plates (2). The module liquid outlet pipe (10) is provided on one side of the module liquid inlet pipe (8). One end of the module liquid outlet pipe (10) is connected to the pipeline of the circulating liquid outlet pipe (6). A liquid outlet control pump (11) is fixedly provided at the liquid outlet end of the module liquid inlet pipe (8).

4. The battery case with a temperature control system according to claim 3, characterized in that: The independent liquid cooling module also includes a heat dissipation sealing cover (12), the heat dissipation sealing cover (12) is sealed and fixed to the lower end of the heat dissipation and thermal conductive plate (7), a one-way liquid cooling groove (13) is provided inside the heat dissipation sealing cover (12), and the module liquid inlet pipe (8) and the module liquid outlet pipe (10) are respectively connected to the two ends of one side of the heat dissipation sealing cover (12).

5. The battery case with a temperature control system according to claim 4, characterized in that: The number of the heat dissipation sealing covers (12) is set to two groups, and the two groups of heat dissipation sealing covers (12) are respectively fixed to the front and rear sides of the bottom end of the heat dissipation and temperature conduction plate (7).

6. The battery case with a temperature control system according to claim 1, characterized in that: A circulation connection pipe (14) is fixed between the circulation liquid inlet pipe (5) and the circulation liquid outlet pipe (6), and an emergency liquid discharge port (15) is provided in the circulation connection pipe (14).

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