A battery water cooling pipe structure, cooling module and battery module for a forklift

Abstract

The utility model relates to the technical field of battery cooling pipes, and discloses a battery water-cooling pipe structure, a cooling module and a battery module for a forklift, wherein the water-cooling pipe structure comprises: a water inlet pipeline, a water return pipeline, a water supply pipeline and an exhaust pipeline, wherein the water inlet pipeline comprises a first water inlet and three first water outlets, the first water inlet is connected to a water-cooling main unit, and the three first water outlets are respectively connected to the water inlet of the battery cooling pipeline; the water return pipeline comprises three second water inlets, a second water outlet and a water confluence node, the second water outlet is connected to the water-cooling main unit, the three second water inlets are respectively connected to the water outlet of the battery cooling pipeline, and are used for cooling water to flow into the water-cooling main unit, the three second water inlets are connected to the water confluence node through pipelines, and the second water outlet is connected to the water confluence node through pipelines; the water supply pipeline is connected to the pipeline between the second water outlet and the water confluence node; the exhaust pipeline is connected to the pipeline between the water supply pipeline and the water confluence node.

Description

Technical Field

[0001] The utility model relates to the technical field of battery cooling pipes, and in particular to a battery water cooling pipe structure, a cooling module and a battery module for a forklift. Background Art

[0002] The use of high-voltage lithium battery packs in electric forklifts has gradually become a mainstream trend. Heavy-duty forklifts are generally equipped with battery packs with high voltage and high power. The output power during use is also high, which causes the battery pack cells to heat up more easily. Therefore, in order to ensure that the battery pack always remains in a good operating temperature range, a cooling circulation path needs to be specially designed for the battery pack. In addition, the structure of heavy-duty forklifts is becoming more and more compact, and the principle of water cooling is more complicated. Utility Model Content

[0003] The purpose of the embodiments of the utility model is to provide a battery water cooling pipe structure, a cooling module and a battery module for a forklift, wherein the water cooling pipe structure solves the problem of difficulty in installation and can ensure the cooling effect of the battery module.

[0004] In order to achieve the above-mentioned object, the utility model provides a battery water cooling pipe structure for a forklift, the water cooling pipe structure comprising:

[0005] A water inlet pipeline, the water inlet pipeline comprising a first water inlet and three first water outlets, the first water inlet is connected to the water-cooled host for receiving cooling water, and the three first water outlets are respectively connected to the water inlets of the corresponding battery cooling pipelines for injecting cooling water into the battery cooling pipelines;

[0006] A water return pipeline, the water return pipeline comprising three second water inlets, one second water outlet and a water confluence node, the second water outlet being connected to the water-cooled host, the three second water inlets being respectively connected to the water outlets of the corresponding battery cooling pipelines, for cooling water to flow into the water-cooled host, the three second water inlets being connected to the water confluence node through pipelines, and the second water outlet being connected to the water confluence node through pipelines;

[0007] A water replenishment pipeline, connected to the pipeline between the second water outlet and the water confluence node, for performing a water replenishment operation;

[0008] The exhaust pipeline is connected to the water supply pipeline and the pipeline between the water gathering node, and is used to exhaust excess gas.

[0009] Optionally, the water inlet pipeline includes:

[0010] A left-side water inlet pipeline, wherein a first end of the left-side water inlet pipeline is connected to the first water inlet, and a second end of the left-side water inlet pipeline is connected to the corresponding first water outlet;

[0011] a middle water inlet pipeline, wherein a first end of the middle water inlet pipeline is connected to a third end of the left water inlet pipeline, and a second end of the middle water inlet pipeline is connected to the corresponding first outlet;

[0012] The right water inlet pipeline, the first end of the right water inlet pipeline is connected to the third end of the middle water inlet pipeline, and the second end of the right water inlet pipeline is connected to the corresponding first water outlet.

[0013] Optionally, the return water pipeline includes:

[0014] A left-side water return pipeline, wherein a first end of the left-side water return pipeline is connected to the corresponding second water inlet;

[0015] A middle water return pipeline, wherein a first end of the middle water return pipeline is connected to a second end of the left water return pipeline, a second end of the middle water return pipeline is connected to the corresponding second water inlet, and a third end of the middle water return pipeline is connected to the exhaust pipeline;

[0016] A converging pipeline, wherein a first end of the converging pipeline is connected to the fourth end of the middle water return pipeline, a second end of the converging pipeline is connected to the water supply pipeline, and a third end of the converging pipeline is connected to the second water outlet;

[0017] The right water return pipeline, the first end of the right water return pipeline is connected to the fifth end of the middle water return pipeline, and the second end of the right water return pipeline is connected to the corresponding second water outlet.

[0018] Optionally, the left water inlet pipeline and the middle water inlet pipeline, and the middle water inlet pipeline and the right water inlet pipeline are connected by rubber tubes.

[0019] Optionally, the left water return pipeline and the middle water return pipeline, and the middle water return pipeline and the right water return pipeline are connected by rubber tubes.

[0020] Optionally, the water-cooling pipe structure includes a metal clamp, which is arranged at the connection between each pipeline and is used to fix the connection between each pipeline.

[0021] Optionally, the water-cooling pipe structure includes a pipe clamp, and the pipe clamp is used to fix the water inlet pipe and the water return pipe, and is used to fix the water inlet pipe and the water return pipe on the water-cooling host.

[0022] On the other hand, the utility model also provides a cooling module for a forklift, the cooling module comprising a water-cooling main unit and the water-cooling pipe structure as described above, the water-cooling main unit being connected to the water-cooling pipe structure, the water-cooling main unit being used to provide coolant to the water-cooling pipe structure and perform power circulation.

[0023] On the other hand, the utility model also provides a battery module for a forklift, the battery module comprising at least three battery packs and the water cooling pipe structure as described above, the battery packs being connected to the water cooling pipe structure.

[0024] Through the above technical solution, the water-cooling pipe structure can supply three groups of battery packs at the same time. The first water inlet of the water inlet pipeline and the second water outlet of the water return pipeline are both connected to the water-cooled host. The water inlet pipeline is provided with three first water outlets, and the water return pipeline is provided with three second water inlets. The three first water outlets and the three second water inlets are all connected to the battery cooling pipeline. The water-cooled host provides cooling water for the entire water-cooling pipe structure and performs power circulation. The water-cooled host provides cooling water to the water inlet pipeline through the corresponding first water inlet, and the water inlet pipeline provides coolant to the corresponding three battery packs through the three first water outlets, so that the battery pack It works within a reasonable temperature range to ensure the working efficiency of the battery pack; the return water pipeline re-aggregates the coolant entering the battery pack through the corresponding three second water inlets into the water-cooled main unit, and adjusts the water temperature through the water-cooled main unit until it reaches the water inlet pipeline connected to the first water inlet connected to the water-cooled main unit, so as to re-supply cooling water to the battery pack; the water supply pipeline can provide coolant for the water-cooled main unit and the water inlet and return pipelines; the exhaust pipeline can discharge excess air in the pipes and the water-cooled main unit after the initial water filling of the water inlet and return pipelines, and can also discharge excess air in the pipelines after water replacement or maintenance. Under the existing forklift and battery pack space layout, the overall layout structure is compact and reasonable; the actual cooling path of the entire water-cooled pipeline is consistent with the principle, which can fully guarantee the cooling effect; the overall structure is beautiful, and installation, disassembly, and maintenance are more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are used to provide a further understanding of the embodiments of the present utility model and constitute a part of the specification. Together with the following specific implementations, they are used to explain the embodiments of the present utility model, but do not constitute a limitation on the embodiments of the present utility model. In the accompanying drawings:

[0026] Figure 1 is a schematic diagram of a battery water cooling pipe structure for a forklift according to an embodiment of the utility model;

[0027] Figure 2 It is a schematic diagram of a water inlet pipeline in a battery water cooling pipe structure for a forklift according to an embodiment of the utility model;

[0028] Figure 3 It is a schematic diagram of a water return pipeline in a battery water cooling pipe structure for a forklift according to an embodiment of the utility model;

[0029] Figure 4It is a schematic diagram of a left water outlet pipe of a water inlet pipe in a battery water cooling pipe structure for a forklift according to an embodiment of the utility model;

[0030] Figure 5 It is a schematic diagram of a middle water outlet pipe of a water inlet pipe in a battery water cooling pipe structure for a forklift according to an embodiment of the utility model;

[0031] Figure 6 It is a schematic diagram of a middle water return pipeline of a water return pipeline in a battery water cooling pipe structure for a forklift according to an embodiment of the utility model;

[0032] Figure 7 It is a schematic diagram of a water supply pipeline in a battery water cooling pipe structure for a forklift according to an embodiment of the utility model;

[0033] Figure 8 It is a schematic diagram of an exhaust pipeline in a battery water cooling pipe structure for a forklift according to an embodiment of the utility model;

[0034] Fig. 9 It is a schematic diagram of pipe brackets on both sides of a battery water cooling pipe structure for a forklift according to an embodiment of the utility model;

[0035] Fig.10 It is a schematic diagram of a middle pipe bracket of a battery water cooling pipe structure for a forklift according to an embodiment of the utility model.

[0036] Description of Reference Numerals

[0037] 1. Water inlet pipe 2. Water return pipe

[0038] 3. Water supply pipeline 4. Exhaust pipeline

[0039] 11. First water inlet 12. First water outlet

[0040] 21. Second water inlet 22. Second water outlet

[0041] 13. Left water outlet pipe 14. Middle water outlet pipe

[0042] 15. Right water outlet pipe 23. Left water return pipe

[0043] 24. Middle water return pipe 25. Right water return pipe

[0044] 26. Water confluence node 27. Converging pipeline

[0045] 5. Rubber tube 6. Metal clamp

[0046] 7. Pipe clamp 8. Water-cooled mainframe

[0047] 71. Pipeline brackets on both sides 72. Pipeline brackets in the middle

[0048] 51. Water inlet pipe 52. Water inlet transition pipe

[0049] 53. Inlet right angle elbow 54. Outlet transition pipe

[0050] 55. Water cooling inlet pipe 9. Battery cooling pipeline

[0051] 131. Left water inlet steel pipe 132. Branch steel pipe

[0052] 141. Connecting steel pipe 142. Middle water inlet steel pipe

[0053] 31. Water replenishment tank 32. Liquid replenishment tube

[0054] 41. Exhaust pipe 271. Ball valve connected to reducer elbow

[0055] 272, Blocking ball valve 273, Fixing clamp

[0056] 274. Ball valve connected to the variable diameter straight pipe 275. Water cooling water inlet pipe DETAILED DESCRIPTION

[0057] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0058] In the embodiments of the present application, unless otherwise specified, directional words such as "up, down, top, bottom" are usually used with reference to the directions shown in the drawings or are used to describe the relative positional relationships of components in the vertical, perpendicular or gravity direction.

[0059] In addition, if there are descriptions involving "first", "second", etc. in the implementation methods of this application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various implementation methods can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0060] like Figure 1 As shown, Figure 1This is a schematic diagram of a battery water cooling pipe structure for a forklift according to an embodiment of the utility model. Figure 1 It can be seen that the water cooling pipe structure includes: an inlet pipeline 1, a return water pipeline 2, a water supply pipeline 3 and an exhaust pipeline 4, wherein the inlet pipeline 1 includes a first water inlet 11 and three first water outlets 12, the first water inlet 11 is connected to the water-cooled host 8 for receiving cooling water, and the three first water outlets 11 are respectively connected to the corresponding water inlets of the battery cooling pipeline 9 for injecting cooling water into the battery cooling pipeline 9; the return water pipeline includes three second water inlets 21, a second water outlet 22 and a water confluence node 26, and the second The water outlet 21 is connected to the water-cooled main unit 8, and the three second water inlets 22 are respectively connected to the water outlets of the corresponding battery cooling pipelines 9, so as to allow cooling water to flow into the water-cooled main unit. The three second water inlets 21 are connected to the water confluence node 26 through pipelines, and the second water outlet 22 is connected to the water confluence node 26 through pipelines; the water replenishment pipeline 3 is connected to the pipeline between the second water outlet 22 and the water confluence node 26 for water replenishment operations; the exhaust pipeline 4 is connected to the pipeline between the water replenishment pipeline 3 and the water confluence node 26 for discharging excess gas. In the present invention, the water-cooling pipe structure can supply three groups of battery packs at the same time. The first water inlet 11 of the water inlet pipeline 1 and the second water outlet of the water return pipeline are both connected to the water-cooled host. The water inlet pipeline 1 is provided with three first water outlets 12, and the water return pipeline 2 is provided with three second water inlets 21. The three first water outlets 12 and the three second water inlets 21 are all connected to the battery cooling pipeline 9. The water-cooled host 8 provides cooling water for the entire water-cooling pipe structure and performs power circulation. The water-cooled host 8 provides cooling water for the water inlet pipeline 1 through the corresponding first water inlet 11, and the water inlet pipeline 1 provides cooling liquid for the corresponding three battery packs through the three first water outlets 12, so that the battery packs can be cooled. The battery pack works within a reasonable temperature range, thereby ensuring the working efficiency of the battery pack; the return water pipeline 2 regroups the coolant entering the battery pack from the water inlet pipeline 1 into the water-cooled main unit 8 through the corresponding three second water inlets 21, and adjusts the water temperature through the water inlet pipeline connected to the first water inlet 11 connected to the water-cooled main unit 8, so as to provide cooling water for the battery pack again; the water supply pipeline 3 can provide coolant for the water-cooled main unit 8 and the water inlet pipeline 1 and the return water pipeline 2; the exhaust pipeline 4 can discharge the excess air in the pipe and the water-cooled main unit 8 after the initial water filling for the water inlet pipeline 1 and the return water pipeline 2, and can also discharge the excess air in the pipeline after water change or maintenance. Under the existing forklift and battery pack space layout, the overall layout structure is compact and reasonable; the actual cooling path of the entire water cooling pipeline is consistent with the principle, which can fully guarantee the cooling effect; the overall structure is beautiful, and installation, disassembly, and maintenance are more convenient.

[0061] In this embodiment, the structure of the water inlet pipe 1 can be a variety of structures known to those skilled in the art. In one embodiment of the utility model, Figure 2As shown, the water inlet pipeline 1 includes a left water inlet pipeline 13, a middle water inlet pipeline 14 and a right water inlet pipeline 15, and the left water inlet pipeline 13, the middle water inlet pipeline 14 and the right water inlet pipeline 15 are respectively connected to the corresponding three battery groups, wherein the first end of the left water inlet pipeline 13 is connected to the first water inlet 12, and the second end of the left water inlet pipeline 13 is connected to the corresponding first water outlet 12; the first end of the middle water inlet pipeline 14 is connected to the third end of the left water inlet pipeline 13, and the second end of the middle water inlet pipeline 14 is connected to the corresponding first water outlet 12; the first end of the right water inlet pipeline 15 is connected to the third end of the middle water inlet pipeline 14, and the second end of the right water inlet pipeline 15 is connected to the corresponding first water outlet 12. The water-cooled host 8 diverts the coolant to the left water inlet pipeline 13, the middle water inlet pipeline 14 and the right water inlet pipeline 15.

[0062] In this embodiment, for the structure of the return pipe 2, as shown in FIG. Figure 3 As shown, it can be a variety of structures known to those skilled in the art. In one embodiment of the utility model, the return water pipeline 2 includes: a left return water pipeline 23, a middle return water pipeline 24, a right return water pipeline 25 and a converging pipeline 27. The left return water pipeline 23, the middle return water pipeline 24 and the right return water pipeline 25 are respectively connected to the corresponding battery packs, wherein the first end of the left return water pipeline 23 is connected to the corresponding second water inlet 21; the first end of the middle return water pipeline 24 is connected to the second end of the left return water pipeline 23 The second end of the middle water return pipe 24 is connected to the second water inlet 21, and the third end of the middle water return pipe 24 is connected to the exhaust pipe 4; the first end of the converging pipe 27 is connected to the fourth end of the middle water return pipe 24, the second end of the converging pipe 27 is connected to the water supply pipe 3, and the third end of the converging pipe 27 is connected to the second water outlet 22; the first end of the right water return pipe 25 is connected to the fifth end of the middle water return pipe 24, and the second end of the right water return pipe 25 is connected to the corresponding second water outlet 22. The coolant entering the battery pack flows through the corresponding three second water inlets to the water-cooled host, completing a water cooling cycle.

[0063] In this embodiment, the structure of the middle water return pipe 24 can be various structures known to those skilled in the art. In one embodiment of the present utility model, Figure 6As shown, the middle water return pipeline 24 includes a water outlet steel pipe 241, a water outlet steel bend 242, a breathable steel pipe 243 and a middle water outlet steel pipe 244. The first end of the water outlet steel bend 242 is connected to the left water return pipeline 23, the second end of the water outlet steel bend 242 is connected to the breathable steel pipe 243, the third end of the water outlet steel bend 242 is connected to the converging pipeline 26, the third end of the water outlet steel bend 242 is connected to one end of the middle water outlet steel pipe 244; the other end of the middle water outlet steel pipe 244 is connected to the second water inlet 21; one end of the water outlet steel pipe 241 is connected to the fifth end of the water outlet steel bend 242, and the other end of the water outlet steel pipe 241 is connected to the right water outlet pipeline 25.

[0064] In this embodiment, the connection between the left water inlet pipe 13 and the middle water inlet pipe 14 and between the middle water inlet pipe 14 and the right water inlet pipe 15 can be a variety of connection methods known to those skilled in the art. In one embodiment of the present utility model, Figure 2 As shown, the left water inlet pipeline 13 and the middle water inlet pipeline 14, as well as the middle water inlet pipeline 14 and the right water inlet pipeline 15 are connected by a rubber tube 5, a water inlet connecting pipe 51 is provided between the left water inlet pipeline 13 and the middle water inlet pipeline 14, and a water inlet transition pipe 52 is provided between the middle water inlet pipeline 14 and the right water inlet pipeline 15. Both the water inlet connecting pipe 51 and the water inlet transition pipe 52 are made of rubber material, which is convenient for adjusting the direction and position of the pipelines during installation.

[0065] In this embodiment, the connection method between the first water inlet 11 and the water-cooled mainframe 8 can be various known to those skilled in the art. In one embodiment of the present utility model, for example Figure 2 As shown, the first water inlet 11 is connected to the water-cooled main unit 8 through a water inlet right-angle elbow 53. The water inlet right-angle elbow 53 and the battery cooling pipeline 9 are also made of rubber material, which is convenient for adjusting the pipeline direction and position during installation.

[0066] In this embodiment, the connection relationship between the left water return pipe 23 and the middle water return pipe 24 and between the middle water return pipe 24 and the right water return pipe 25 can be various known to those skilled in the art. The left water return pipe 23 and the middle water return pipe 24 and the middle water return pipe 24 and the right water return pipe 25 are connected through a rubber pipe 5, wherein the left water return pipe 23 and the middle water return pipe 24 are connected through a water outlet transition pipe 54, and the middle water return pipe 24 and the right water return pipe 25 are connected through a water outlet transition pipe 54. The water outlet transition pipe 54 is made of rubber material, which is convenient for adjusting the direction and position of the pipes during installation.

[0067] In this embodiment, the connection method between the converging pipe 27 and the second water inlet 21 can be a variety of connection methods known to people in this field. In one embodiment of the utility model, the converging pipe 27 and the second water inlet 21 are connected by a water-cooled water inlet pipe 55, and the water-cooled water inlet pipe 55 is made of rubber material to facilitate the direction and position adjustment of the pipe during installation.

[0068] In this embodiment, the structures of the left water inlet pipeline 13, the middle water inlet pipeline 14 and the right water inlet pipeline 15 can be various structures known to those skilled in the art. Figure 4 and Figure 5 As shown, in one embodiment of the utility model, the left water inlet pipe 13 includes a left water inlet steel pipe 131 and a branch steel pipe 132, wherein the first end of the left water inlet steel pipe 131 is connected to the first water outlet 12, the second end of the left water inlet steel pipe 131 is connected to the branch steel pipe 132, the left water inlet steel pipe 131 and the third end of the left water inlet steel pipe 131 are connected to the first water inlet 21, the left water inlet steel pipe 131 transports the cooling water provided by the water-cooled host 8 to the first water outlet 12, and transports it to the battery pack on the left through the battery cooling pipeline 9 to cool the battery pack on the left, and the branch steel pipe 132 diverts the coolant to the middle water inlet pipe 14 and the right water inlet pipe 15. The middle water inlet pipeline 14 includes a connecting steel pipe 141 and a middle water inlet steel pipe 142, wherein the first end of the connecting steel pipe 141 is connected to the branch steel pipe 132 through the water inlet pipe 51, the second end of the connecting steel pipe 141 is connected to one end of the middle water inlet steel pipe 142, and the third end of the connecting steel pipe 141 is connected to the right water inlet pipeline 15 through the water inlet transition pipe 52; the other end of the middle water inlet steel pipe 142 is connected to the corresponding first water outlet 12, and the coolant is transported to the battery cooling pipeline 9 through the first water outlet 12, and then transported to the middle battery pack through the battery cooling pipeline 9 to cool the middle battery pack.

[0069] In this embodiment, the structure of the convergent pipeline 27 can be a variety of structures known to those skilled in the art. In one embodiment of the utility model, the convergent pipeline 27 includes a ball valve connected to a reducing elbow 271, a blocking ball valve 272, a fixing clamp 273, a ball valve connected to a reducing straight pipe 274, and a water-cooled water inlet pipe 275. The ball valve connected to the reducing elbow 271, the blocking ball valve 272, the fixing clamp 273, the ball valve connected to the reducing straight pipe 274, the water-cooled water inlet pipe 275 and the water-cooled water inlet pipe 55 are connected in sequence, the ball valve connected to the reducing elbow 271 is connected to the middle water return pipeline 24, and the water-cooled water inlet pipe 55 is connected to the second water outlet 22.

[0070] In this embodiment, the structure of the water supply pipeline 3 can be a variety of structures known to those skilled in the art. Figure 7As shown, the water replenishment pipeline 3 includes a water replenishment tank 31 and a liquid replenishment pipe 32. One end of the liquid replenishment pipe 32 is connected to the water replenishment tank 31, and the other end of the liquid replenishment pipe 32 is connected to the convergence pipe 27. The structure of the exhaust pipe 4 can be a variety of structures known to those skilled in the art, such as Figure 8 As shown, the exhaust pipeline 4 includes an exhaust pipe 41, one end of which is connected to the water supply tank 31, and the other end of the exhaust pipe 41 is connected to the third end of the middle water return pipeline. The water supply pipeline 3 can provide coolant for the water-cooled mainframe 8 and the water inlet pipeline 1 and the water return pipeline 2; the exhaust pipeline 4 can discharge excess air in the water inlet pipeline 1 and the water return pipeline 2 and the water-cooled mainframe 8 after the initial water addition, and can also discharge excess air in the pipeline after water replacement or maintenance.

[0071] In this embodiment, the water cooling pipe structure further includes a metal clamp 6, which is arranged at the connection of each pipeline and is used to fix the connection of each pipeline. The water cooling pipe structure includes a pipe clamp 7, which is used to fix the water inlet pipe 1 and the water return pipe 2, and is used to fix the water inlet pipe 1 and the water return pipe 2 on the water cooling host 8.

[0072] In this embodiment, if Fig. 9 and Fig.10 As shown, the water cooling pipe structure also includes two side pipe brackets 71 and a middle pipe bracket 72, wherein the two side pipe brackets 71 are used to fix the water inlet pipe 1 and the return pipe 2 on the left and right sides, and the middle pipe bracket 72 is used to fix the water inlet pipe 1 and the return pipe 2 in the middle.

[0073] The utility model also includes a cooling module for a forklift, which includes a water-cooling main unit 8 and the water-cooling pipe structure as described above. The water-cooling main unit 8 is connected to the water-cooling pipe structure, and the water-cooling main unit 8 is used to provide coolant for the water-cooling pipe structure and perform power circulation.

[0074] The utility model also includes a battery module for a forklift, the battery module includes at least three battery groups and the water cooling pipe structure as described above, the battery group is connected to the water cooling pipe structure, and the water cooling pipe structure cools the battery group.

[0075] Through the above technical solution, the water-cooling pipe structure can supply three groups of battery packs at the same time. The first water inlet 11 of the water inlet pipeline 1 and the second water outlet of the return water pipeline are both connected to the water-cooled host. The water inlet pipeline 1 is provided with three first water outlets 12, and the return water pipeline 2 is provided with three second water inlets 21. The three first water outlets 12 and the three second water inlets 21 are all connected to the battery cooling pipeline 9. The water-cooled host 8 provides cooling water for the entire water-cooling pipe structure and performs power circulation. The water-cooled host 8 provides cooling water for the water inlet pipeline 1 through the corresponding first water inlet 11, and the water inlet pipeline 1 provides cooling liquid for the corresponding three battery packs through the three first water outlets 12, so that the battery packs can be cooled. The battery pack works within a reasonable temperature range, thereby ensuring the working efficiency of the battery pack; the return water pipeline 2 regroups the coolant entering the battery pack from the water inlet pipeline 1 into the water-cooled main unit 8 through the corresponding three second water inlets 21, and adjusts the water temperature through the water inlet pipeline connected to the first water inlet 11 connected to the water-cooled main unit 8, so as to provide cooling water for the battery pack again; the water supply pipeline 3 can provide coolant for the water-cooled main unit 8 and the water inlet pipeline 1 and the return water pipeline 2; the exhaust pipeline 4 can discharge the excess air in the pipe and the water-cooled main unit 8 after the initial water filling for the water inlet pipeline 1 and the return water pipeline 2, and can also discharge the excess air in the pipeline after water change or maintenance. Under the existing forklift and battery pack space layout, the overall layout structure is compact and reasonable; the actual cooling path of the entire water cooling pipeline is consistent with the principle, which can fully guarantee the cooling effect; the overall structure is beautiful, and installation, disassembly, and maintenance are more convenient.

[0076] The optional implementation modes of the utility model examples are described in detail above in conjunction with the accompanying drawings. However, the implementation modes of the utility model are not limited to the specific details in the above implementation modes. Within the technical concept of the implementation modes of the utility model, various simple modifications can be made to the technical solutions of the implementation modes of the utility model. These simple modifications all belong to the protection scope of the implementation modes of the utility model.

[0077] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the various possible combinations of the embodiments of the present utility model will not be described separately.

[0078] In addition, various different embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed in the embodiments of the present invention.

Claims

1. A battery water cooling pipe structure for a forklift, characterized in that: The water cooling pipe structure comprises: A water inlet pipeline, the water inlet pipeline comprising a first water inlet and three first water outlets, the first water inlet is connected to the water-cooled host for receiving cooling water, and the three first water outlets are respectively connected to the water inlets of the corresponding battery cooling pipelines for injecting cooling water into the battery cooling pipelines; A water return pipeline, the water return pipeline comprising three second water inlets, one second water outlet and a water confluence node, the second water outlet being connected to the water-cooled host, the three second water inlets being respectively connected to the water outlets of the corresponding battery cooling pipelines, for cooling water to flow into the water-cooled host, the three second water inlets being connected to the water confluence node through pipelines, and the second water outlet being connected to the water confluence node through pipelines; A water replenishment pipeline, connected to the pipeline between the second water outlet and the water confluence node, for performing a water replenishment operation; The exhaust pipeline is connected to the water supply pipeline and the pipeline between the water gathering node, and is used to exhaust excess gas.

2. The water cooling pipe structure according to claim 1, characterized in that: The water inlet pipeline comprises: A left-side water inlet pipeline, wherein a first end of the left-side water inlet pipeline is connected to the first water inlet, and a second end of the left-side water inlet pipeline is connected to the corresponding first water outlet; a middle water inlet pipeline, wherein a first end of the middle water inlet pipeline is connected to a third end of the left water inlet pipeline, and a second end of the middle water inlet pipeline is connected to the corresponding first outlet; The right water inlet pipeline, the first end of the right water inlet pipeline is connected to the third end of the middle water inlet pipeline, and the second end of the right water inlet pipeline is connected to the corresponding first water outlet.

3. The water cooling pipe structure according to claim 1, characterized in that: The return water pipeline comprises: A left-side water return pipeline, wherein a first end of the left-side water return pipeline is connected to the corresponding second water inlet; A middle water return pipeline, wherein a first end of the middle water return pipeline is connected to a second end of the left water return pipeline, a second end of the middle water return pipeline is connected to the corresponding second water inlet, and a third end of the middle water return pipeline is connected to the exhaust pipeline; A converging pipeline, wherein a first end of the converging pipeline is connected to the fourth end of the middle water return pipeline, a second end of the converging pipeline is connected to the water supply pipeline, and a third end of the converging pipeline is connected to the second water outlet; The right water return pipeline, the first end of the right water return pipeline is connected to the fifth end of the middle water return pipeline, and the second end of the right water return pipeline is connected to the corresponding second water outlet.

4. The water cooling pipe structure according to claim 2, characterized in that: The left water inlet pipeline and the middle water inlet pipeline, and the middle water inlet pipeline and the right water inlet pipeline are connected through rubber tubes.

5. The water cooling pipe structure according to claim 3, characterized in that: The left water return pipeline and the middle water return pipeline, and the middle water return pipeline and the right water return pipeline are connected through rubber tubes.

6. The water cooling pipe structure according to claim 1, characterized in that: The water-cooling pipe structure comprises a metal clamp, which is arranged at the connection of each pipeline and is used to fix the connection of each pipeline.

7. The water cooling pipe structure according to claim 1, characterized in that: The water-cooling pipe structure includes a pipe clamp, and the pipe clamp is used to fix the water inlet pipe and the water return pipe, and is used to fix the water inlet pipe and the water return pipe on the water-cooling main unit.

8. A cooling module for a forklift, characterized in that: The cooling module includes a water-cooled main unit and a water-cooled pipe structure as described in any one of claims 1 to 7, wherein the water-cooled main unit is connected to the water-cooled pipe structure, and the water-cooled main unit is used to provide coolant to the water-cooled pipe structure and perform power circulation.

9. A battery module for a forklift, characterized in that: The battery module comprises at least three battery groups and a water-cooling pipe structure as claimed in any one of claims 1 to 7, and the battery groups are connected to the water-cooling pipe structure.

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