Liquid cooling equipment for new energy battery pack

Abstract

The invention relates to the field of new energy battery cooling, in particular to liquid cooling equipment for a new energy battery pack, which comprises a bottom plate, a plurality of battery partition plates are fixed on the bottom plate, and a first water cooling pipeline system is arranged between the bottom plate and the partition plates; the first water cooling pipeline system comprises a first water inlet section, roundabout sections arranged in the partition plates, connecting sections embedded in the bottom plate and a first water outlet section, the connecting sections are arranged between the adjacent roundabout sections, the batteries are well blocked and limited through the arrangement of the partition plates, the arrangement of the roundabout sections is also greatly facilitated, and the service life of the batteries is prolonged. The cooling of the new energy battery is not limited to the bottom of the new energy battery, but a three-dimensional cooling network is formed and upwards and longitudinally extends into the new energy battery pack, specifically, the cooling of a single battery in the new energy battery pack is more comprehensive, the cooling of the new energy battery pack is greatly improved, and the service life of the new energy battery pack is prolonged. And potential safety hazards such as short circuit and explosion of the new energy battery pack are avoided.

Description

Technical Field

[0001] The present invention relates to the field of new energy battery cooling, and in particular to a liquid cooling device for a new energy battery pack. Background Art

[0002] With the increasing popularity of electric vehicles, the demand for new energy batteries is also increasing. New energy batteries will generate heat during the charging and discharging process. If the heat is not dissipated in time, the battery temperature will be too high, and the battery temperature will be too high, which will cause the battery to short-circuit and then cause the battery to explode, which is very dangerous. The patent with application number CN202021171462.7 discloses a new energy battery liquid cooling plate. When the new energy battery liquid cooling plate is in use, the battery is placed on the new energy battery liquid cooling plate. The liquid inlet and outlet holes of the new energy battery liquid cooling plate are connected to the cold source to form a circulation loop. The circulation loop is a serpentine regulating flow channel and an auxiliary flow channel arranged on the bottom plate. Although the new energy battery liquid cooling plate of this structure can have a certain cooling effect on the battery, it still has the following disadvantages: the new energy battery liquid cooling plate of this structure has a good cooling speed and cooling effect on the bottom of the new energy battery, but the new energy battery is often a battery module composed of multiple batteries, and multiple batteries are often placed side by side, which makes it difficult to dissipate the heat generated between the batteries in time, and often accumulates between the batteries, thereby causing the overall temperature of the new energy battery to rise, and then causing short circuits or even explosions, which is very dangerous. Therefore, there is an urgent need for a liquid cooling device that can dissipate the heat generated between individual batteries in the new energy battery module in time. Summary of the invention

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the present invention aims to provide a liquid cooling device for a new energy battery pack, which solves the problems existing in the prior art. The present invention, through the provision of a first water-cooling pipeline system, makes the cooling of the new energy battery not limited to its bottom, but forms a three-dimensional cooling network, extending vertically upward into the interior of the new energy battery pack, specifically to the cooling of a single battery inside the new energy battery pack, so that the cooling is more comprehensive, greatly improving the cooling of the new energy battery pack, and avoiding the occurrence of safety hazards such as short circuit and explosion of the new energy battery pack.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a liquid cooling device for a new energy battery pack, comprising a base plate, a plurality of battery partitions are fixed on the base plate, a first water cooling pipe system is arranged between the base plate and the partition, the first water cooling pipe system comprises a first water inlet section, a detour section arranged inside the partition, a connecting section embedded in the base plate and a first water outlet section, the connecting section is arranged between adjacent detour sections, wherein a passage is formed between the first water inlet section, the detour section, the connecting section and the first water outlet section.

[0007] Preferably, the connecting section comprises a transverse connecting section and a longitudinal connecting section.

[0008] Preferably, a second water-cooling pipe system is provided on the bottom plate, and the second water-cooling pipe system includes a second water inlet section, a transverse pipe arranged below the connecting section, a longitudinal pipe and a second water outlet section, the longitudinal pipe is connected to adjacent transverse pipes, a transverse plug-in interface matching the transverse connecting section is provided on the transverse pipe, the transverse connecting section is inserted into the transverse plug-in interface and fixedly connected to the transverse plug-in interface, a longitudinal plug-in interface matching the longitudinal connecting section is provided on the longitudinal pipe, the longitudinal connecting section is inserted into the longitudinal plug-in interface and fixedly connected to the longitudinal plug-in interface.

[0009] Preferably, the caliber of the transverse tube and the caliber of the longitudinal tube are both larger than the diameter of the detour section.

[0010] Preferably, a plurality of groups of staggered plates are provided in the transverse connecting section.

[0011] Preferably, an annular outer convex section is provided between two adjacent groups of staggered plates.

[0012] Preferably, two detour sections are provided in the partition.

[0013] Preferably, the battery separators are arranged in two rows on the bottom plate.

[0014] Preferably, the bottom wall of the transverse connecting section is configured to be wavy.

[0015] Preferably, a heat-insulating mechanism is provided below the transverse tube, and the heat-insulating mechanism comprises a heat-insulating frame provided below the connecting section, and refractory balls are provided in the heat-insulating frame, and the refractory balls are hollow.

[0016] (III) Beneficial effects

[0017] 1. The present invention not only isolates and limits the battery well through the provision of the partition, but also greatly facilitates the provision of the circuitous section, thereby forming a first water-cooling pipeline system, so that the cooling of the new energy battery is not limited to the bottom thereof, but forms a three-dimensional cooling network, which extends vertically upward into the interior of the new energy battery pack, specifically to the cooling of a single battery inside the new energy battery pack, making the cooling more comprehensive, greatly improving the cooling of the new energy battery pack, and avoiding the occurrence of safety hazards such as short circuit and explosion of the new energy battery pack;

[0018] 2. The present invention cools the transverse connecting section and the longitudinal connecting section by setting up the second water-cooling pipeline system. That is to say, after the cooling water entering the detour section cools the battery, it enters the transverse connecting section or the longitudinal connecting section to be re-cooled, and after being cooled, it enters the next detour section to cool the next battery. In this way, each time the cooling water passing through the detour section can be cooled by the cooling water in the transverse pipe and then enter the next detour section, which greatly improves the cooling effect, and also enables the detour section close to the first water outlet section to cool its corresponding battery well, thereby achieving uniform cooling. In addition, the setting of the second water-cooling pipeline system greatly improves the cooling effect on the bottom of the new energy battery, thereby greatly improving the cooling effect on the entire new energy battery;

[0019] 3. The present invention arranges several groups of staggered plates in the transverse connecting section, which can, on the one hand, mix the cooling water passing through the transverse connecting section so that it is cooled more evenly by the cooling water in the transverse tube, and on the other hand, play a blocking role, so that the cooling water passes through the transverse connecting section for a longer time, thereby increasing the re-cooling effect of the cooling water. The arrangement of the annular convex section increases the contact area with the cooling water in the transverse tube, thereby further increasing the cooling effect. On the other hand, the staggered plates and the annular convex sections are arranged alternately, so that the cooling water in the transverse connecting section is circulated in a collection and release manner, which greatly improves the effect of mixed flow cooling.

[0020] 4. The present invention, through the setting of the insulation mechanism, can well isolate the first water-cooling pipeline system and the second water-cooling pipeline system from the outside world, and has a good insulation effect on the cooling water in the first water-cooling pipeline system and the second water-cooling pipeline system, especially when the external environment is at high temperature, it has a good heat-blocking effect, thereby ensuring the cooling effect of the new energy battery pack, wherein the insulation mechanism is arranged to be composed of an insulation frame and a hollow refractory ball. The insulation mechanism of this structure has better insulation and heat-insulating effects, and the contact between the spherical structure of the refractory ball and the inner top wall and the inner bottom wall of the insulation frame is point contact, which further reduces the heat exchange between the insulation mechanism and the transverse tube and the outside world. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is an overall schematic diagram of the present invention.

[0022] Figure 2 For the present invention Figure 1 Schematic diagram after removing the battery separator.

[0023] Figure 3 For the present invention Figure 1 Schematic diagram after removing the battery separator.

[0024] Figure 4 It is a schematic diagram of the second water cooling pipeline system on the base plate of the present invention.

[0025] Figure 5 It is a schematic diagram of the second water cooling pipeline system on the base plate of the present invention.

[0026] Figure 6 It is a schematic diagram of the transverse connecting section, staggered plates and annular convex section of the present invention.

[0027] Figure 7 It is a schematic diagram of the transverse tube, transverse connecting section and heat preservation mechanism of the present invention.

[0028] Figure 8 It is a schematic diagram of the heat preservation mechanism of the present invention.

[0029] Fig. 9 This is a schematic diagram of the present invention after installing new energy batteries.

[0030] In the figure: 1-bottom plate, 2-battery separator, 3-first water cooling pipeline system, 4-first water inlet section, 5-detour section, 6-connecting section, 7-first water outlet section, 8-transverse connecting section, 9-longitudinal connecting section, 10-second water cooling pipeline system, 11-second water inlet section, 12-transverse pipe, 13-longitudinal pipe, 14-second water outlet section, 15-transverse plug interface, 16-longitudinal plug interface, 17-interlaced plate, 18-annular outer convex section, 19-insulation mechanism, 20-insulation frame, 21-refractory ball, 22-single battery. DETAILED DESCRIPTION

[0031] The following will be combined with the attached embodiment of the present invention Figure 1-9 The technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments 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.

[0032] The present invention provides a technical solution: a liquid cooling device for a new energy battery pack, comprising a base plate 1, a plurality of battery partitions 2 are fixed on the base plate 1, a first water cooling pipeline system 3 is arranged between the base plate 1 and the partition 2, the first water cooling pipeline system 3 comprises a first water inlet section 4, a detour section 5 arranged inside the partition 2, a connecting section 6 embedded in the base plate 1 and a first water outlet section 7, the connecting section 6 is arranged between adjacent detour sections 5, wherein a passage is formed between the first water inlet section 4, the detour section 5, the connecting section 6 and the first water outlet section 7, such as Fig. 9As shown, a single battery 22 is placed between the partitions 2. When working, cooling water enters from the first water inlet section 4, flows through all the detour sections 5 and the connecting section 6 in sequence, and then flows out from the first water outlet section 7. A refrigerator is connected between the first water inlet section 4 and the first water outlet section 7. A liquid pump is provided between the first water outlet section 7 and the refrigerator. The cooling water is circulated by the liquid pump, and the new energy battery is circulated and cooled through the circulation loop. The partition 2 not only blocks and limits the battery well, but also greatly facilitates the setting of the detour section 5, so that the cooling of the new energy battery is not limited to its bottom, but forms a three-dimensional cooling network, which extends vertically upward into the interior of the new energy battery pack. Specifically, the cooling of a single battery inside the new energy battery pack makes the cooling more comprehensive, greatly improves the cooling of the new energy battery pack, and avoids the occurrence of safety hazards such as short circuit and explosion of the new energy battery pack.

[0033] The connecting section 6 includes a transverse connecting section 8 and a longitudinal connecting section 9 , wherein the transverse connecting section 8 is used for transverse connection of the detour sections 5 , and the longitudinal connecting section 9 is used for longitudinal connection between the detour sections 5 .

[0034] A second water-cooling pipeline system 10 is provided on the bottom plate 1, and the second water-cooling pipeline system 10 includes a second water inlet section 11, a transverse pipe 12 arranged below the connecting section 6, a longitudinal pipe 13 and a second water outlet section 14, the longitudinal pipe 13 is connected to the adjacent transverse pipes 12, and a transverse plug-in port 15 matching the transverse connecting section 8 is provided on the transverse pipe 12, and the transverse connecting section 8 is inserted into the transverse plug-in port 15 and fixedly connected to the transverse plug-in port 15, and a longitudinal plug-in port 16 matching the longitudinal connecting section 9 is provided on the longitudinal pipe 13, and the longitudinal connecting section 9 is inserted into the longitudinal plug-in port 16 and fixedly connected to the longitudinal plug-in port 16. Since the entire pipeline path of the first water-cooling pipeline system 3 is relatively long, the detour section 5 closer to the first water outlet section 7 has a worse cooling effect on the corresponding battery, because the more heat the same cooling water carries at the back, Then the cooling effect will be worse, so the transverse connecting section 8 and the longitudinal connecting section 9 are cooled by the setting of the second water-cooling pipe system 10. That is to say, after the cooling water entering the detour section 5 cools the battery, it enters the transverse connecting section 8 or the longitudinal connecting section 9 to be re-cooled, and after being cooled, it enters the next detour section 5 to cool the next battery. In this way, each time the cooling water passes through the detour section 5, it can be cooled by the cooling water in the transverse pipe 12 and then enter the next detour section 5. This greatly improves the cooling effect, and also enables the detour section 5 close to the first water outlet section 7 to cool its corresponding battery well, thereby achieving a uniform cooling effect. In addition, the setting of the second water-cooling pipe system 10 greatly improves the cooling effect on the bottom of the new energy battery, thereby greatly improving the cooling effect on the entire new energy battery. The cooling water of the second water-cooling pipeline system 10 enters from the second water inlet section 11, flows through all the transverse tubes 12 and the longitudinal tubes 13 in sequence, and then flows out from the second water outlet section 14, wherein a refrigerator is arranged between the second water inlet section 11 and the second water outlet section 14 (the refrigerator is also the refrigerator on the first water-cooling pipeline system 3, that is, the first water-cooling pipeline system 3 and the second water-cooling pipeline system 10 share a refrigerator), wherein a liquid pump is arranged between the second water outlet section 14 and the water cooler, and the circulation of cooling water is realized by the liquid pump, and the transverse connecting section 8, the longitudinal connecting section 9 and the bottom of the new energy battery are circulated and cooled through the circulation loop.

[0035] The diameter of the transverse pipe 12 and the diameter of the longitudinal pipe 13 are both larger than the diameter of the detour section 5, wherein the diameters of the detour section 5, the transverse connecting section 8 and the longitudinal connecting section 9 are the same, thus the transverse connecting section 8 and the longitudinal connecting section 9 inserted into the transverse pipe 12 are well cooled. Since the pipeline of the first water-cooling pipeline system 3 is much longer than the pipeline of the second water-cooling pipeline system 10, when the cooling water in the first water-cooling pipeline system 3 completes one cycle, the second water-cooling pipeline system 10 has already completed several cycles, wherein it can be arranged that the cooling water in the first water-cooling pipeline system 3 completes one cycle, and the cooling water in the second water-cooling pipeline system 10 just completes four cycles, thus the cooling effect is more efficient.

[0036] Several groups of staggered plates 17 are arranged in the transverse connecting section 8. The staggered plates 17 can mix the cooling water passing through the transverse connecting section 8 so that it is cooled more evenly by the cooling water in the transverse tube 12. On the other hand, they can block the cooling water so that it takes longer to pass through the transverse connecting section 8, thereby increasing the re-cooling effect of the cooling water. Several groups of staggered plates 17 are also arranged in the longitudinal connecting section 9, which have the same effect.

[0037] An annular convex section 18 is arranged between two adjacent groups of staggered plates 17. The arrangement of the annular convex section 18, on the one hand, increases the contact area with the cooling water in the transverse tube 12, thereby further increasing the cooling effect. On the other hand, the alternating arrangement of the staggered plates 17 and the annular convex section 18 allows the cooling water in the transverse connecting section 8 to be circulated and released, thereby greatly improving the mixed flow cooling effect.

[0038] There are two detour sections 5 in the partition 2 , which is just the right number. The battery can be cooled sufficiently, and the overall cooling efficiency and effect will not be affected by having more detour sections 5 in the partition 2 .

[0039] The battery separators 2 are arranged in two rows on the bottom plate 1, and the arrangement is made according to the actual situation.

[0040] The bottom wall of the transverse connecting section 8 is configured to be wavy, which increases the contact area with the cooling water in the transverse pipe 12, thereby further increasing the cooling effect. The bottom wall of the longitudinal connecting section 9 is also configured to be wavy.

[0041] A heat preservation mechanism 19 is provided below the transverse tube 12. The heat preservation mechanism 19 includes a heat preservation frame 20 provided below the connecting section 6. A refractory ball 21 is provided in the heat preservation frame 20. The refractory ball 21 is provided to be hollow. The heat preservation mechanism 19 is provided to isolate the first water-cooling pipeline system 3 and the second water-cooling pipeline system 10 from the outside world, and to provide a good heat preservation effect on the cooling water in the first water-cooling pipeline system 3 and the second water-cooling pipeline system 10. Especially when the external environment is at a high temperature, it plays a good role in blocking heat, thereby ensuring the cooling effect of the new energy battery pack. The heat preservation mechanism 19 is provided to be composed of a heat preservation frame 20 and a hollow refractory ball 21. The heat preservation and heat insulation effect of the heat preservation mechanism 19 of this structure is better, and the contact between the spherical structure of the refractory ball 21 and the inner top wall and the inner bottom wall of the heat preservation frame 20 is point contact, which further reduces the heat exchange between the heat preservation mechanism 19 and the transverse tube 12 and the outside world. The heat preservation frame 20 is a whole, which spans all the transverse tubes 12 and the longitudinal tubes 13.

[0042] Working principle: When working, cooling water enters from the first water inlet section 4, flows through all the detour sections 5 and the connecting section 6 in sequence, and then flows out from the first water outlet section 7, wherein a refrigerator is connected between the first water inlet section 4 and the first water outlet section 7, wherein a liquid pump is provided between the first water outlet section 7 and the refrigerator, and the cooling water is circulated by the liquid pump, and the new energy battery is circulated and cooled through the circulation loop. The partition 2 not only blocks and limits the battery well, but also greatly facilitates the setting of the detour section 5, so that the cooling of the new energy battery is not limited to its bottom, but forms a three-dimensional cooling network, which extends vertically upward into the interior of the new energy battery pack, and specifically to the cooling of a single battery inside the new energy battery pack, so that the cooling is more comprehensive, which greatly improves the cooling of the new energy battery pack, and avoids the occurrence of safety hazards such as short circuit and explosion of the new energy battery pack. The transverse connecting section 8 and the longitudinal connecting section 9 are cooled by the setting of the second water-cooling pipe system 10. That is to say, after the cooling water entering the detour section 5 cools the battery, it enters the transverse connecting section 8 or the longitudinal connecting section 9 to be re-cooled, and after being cooled, it enters the next detour section 5 to cool the next battery. In this way, each time the cooling water passes through the detour section 5, it can be cooled by the cooling water in the transverse pipe 12 and then enter the next detour section 5. This greatly improves the cooling effect, and also enables the detour section 5 close to the first water outlet section 7 to cool its corresponding battery well, thereby achieving a uniform cooling effect. In addition, the setting of the second water-cooling pipe system 10 greatly improves the cooling effect on the bottom of the new energy battery, thereby greatly improving the cooling effect on the entire new energy battery.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A liquid cooling device for a new energy battery pack, characterized in that: The invention comprises a base plate (1), a plurality of battery partitions (2) are fixed on the base plate (1), a first water cooling pipe system (3) is arranged between the base plate (1) and the partitions (2), the first water cooling pipe system (3) comprises a first water inlet section (4), a detour section (5) arranged inside the partition (2), a connecting section (6) embedded in the base plate (1) and a first water outlet section (7), the connecting section (6) being arranged between adjacent detour sections (5), wherein a passage is formed between the first water inlet section (4), the detour section (5), the connecting section (6) and the first water outlet section (7).

2. The liquid cooling device for a new energy battery pack according to claim 1, characterized in that: The connecting section (6) comprises a transverse connecting section (8) and a longitudinal connecting section (9).

3. The liquid cooling device for a new energy battery pack according to claim 2, characterized in that: A second water-cooling pipeline system (10) is provided on the bottom plate (1), and the second water-cooling pipeline system (10) comprises a second water inlet section (11), a transverse pipe (12) arranged below the connecting section (6), a longitudinal pipe (13) and a second water outlet section (14), wherein the longitudinal pipe (13) is connected to the adjacent transverse pipes (12), the transverse pipe (12) is provided with a transverse plug-in port (15) matching the transverse connecting section (8), the transverse connecting section (8) is inserted into the transverse plug-in port (15) and is fixedly connected to the transverse plug-in port (15), and the longitudinal pipe (13) is provided with a longitudinal plug-in port (16) matching the longitudinal connecting section (9), the longitudinal connecting section (9) is inserted into the longitudinal plug-in port (16) and is fixedly connected to the longitudinal plug-in port (16).

4. The liquid cooling device for a new energy battery pack according to claim 3, characterized in that: The caliber of the transverse tube (12) and the caliber of the longitudinal tube (13) are both larger than the diameter of the detour section (5).

5. The liquid cooling device for a new energy battery pack according to claim 2, characterized in that: A plurality of groups of staggered plates (17) are arranged in the transverse connecting section (8).

6. The liquid cooling device for a new energy battery pack according to claim 5, characterized in that: An annular outer convex section (18) is provided between two adjacent groups of the staggered plates (17).

7. The liquid cooling device for a new energy battery pack according to claim 1, characterized in that: Two detour sections (5) are provided in the partition (2).

8. The liquid cooling device for a new energy battery pack according to claim 1, characterized in that: The battery separators (2) are arranged in two rows on the bottom plate (1).

9. The liquid cooling device for a new energy battery pack according to claim 2, characterized in that: The bottom wall of the transverse connecting section (8) is configured to be wavy.

10. The liquid cooling device for a new energy battery pack according to claim 3, characterized in that: A heat preservation mechanism (19) is provided below the transverse tube (12), and the heat preservation mechanism (19) comprises a heat preservation frame (20) provided below the connecting section (6), and a refractory ball (21) is provided inside the heat preservation frame (20), and the refractory ball (21) is configured to be hollow.

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