New energy automobile battery pack

Abstract

The invention relates to the technical field of new energy automobiles, in particular to a new energy automobile battery pack which comprises a bottom plate, a cavity is formed in the top end of the bottom plate, a control mainboard and multiple sets of fixing supports are installed on the inner bottom wall of the cavity, multiple sets of battery blocks are installed on each set of fixing supports, and the new energy automobile battery pack further comprises a heat dissipation mechanism. And the heat dissipation mechanism comprises multiple sets of mounting grooves, the multiple sets of mounting grooves are formed in the inner bottom wall of the cavity, cooling pipes are installed in the multiple sets of mounting grooves, and cooling grooves are formed in the multiple sets of cooling pipes. Through mutual cooperation of the heat dissipation mechanism and the uniform heat dissipation mechanism, the overall cooling effect of the multiple groups of battery blocks can be improved while the multiple groups of battery blocks are cooled, the situation of non-uniform heat dissipation of the battery blocks in the battery pack is avoided, the heat dissipation efficiency and the heat dissipation effect of the battery pack are further ensured, and the service life of the battery pack is prolonged. The service life of the battery is effectively prolonged, and meanwhile, the problem that the battery pack is damaged or even exploded due to too high temperature is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicles, and in particular to a new energy vehicle battery pack. Background Art

[0002] The battery pack, also known as the power battery pack or power battery PACK, is an indispensable core component in modern new energy vehicles. It is a high-voltage, large-capacity battery system formed by the precise combination of multiple individual battery cells. As the core power source of new energy vehicles, especially pure electric vehicles and plug-in hybrid vehicles, it will be affected by various environmental factors during use. Among them, temperature is one of the important factors affecting battery performance. Since the battery pack will generate a lot of heat when working and it is in a relatively closed environment, it will cause the battery temperature to rise, and excessive temperature will accelerate the attenuation of battery life. Therefore, in the use of new energy vehicles, the heat dissipation of the battery pack is particularly important.

[0003] Existing heat dissipation methods for new energy battery packs are mostly air cooling or liquid cooling. Among them, the heat dissipation efficiency of air cooling is relatively low. Under high temperature or high load conditions, air cooling is very likely to fail to meet the heat dissipation requirements of the battery pack, thereby affecting the performance and life of the battery. In addition, although the heat dissipation efficiency of liquid cooling is relatively high, since the new energy battery pack is composed of multiple battery blocks (or battery modules), when the coolant flows from one battery block to another for heat dissipation, its temperature will inevitably increase relatively, which can easily lead to uneven heat dissipation of the battery blocks inside the new energy battery pack, greatly reducing the heat dissipation efficiency and effect of the new energy battery pack, and poor practicality. Summary of the invention

[0004] The purpose of the present invention is to solve the problem of poor heat dissipation efficiency and effect of the heat dissipation method for new energy battery packs in the prior art, and to propose a new energy vehicle battery pack.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a new energy vehicle battery pack, comprising a bottom plate, a cavity is opened at the top of the bottom plate, a control mainboard and multiple groups of fixing brackets are installed on the bottom wall of the cavity, and multiple groups of battery blocks are installed on each group of the fixing brackets, and also includes:

[0006] A heat dissipation mechanism, wherein the heat dissipation mechanism comprises a plurality of mounting grooves, wherein the plurality of mounting grooves are provided on the bottom wall of the cavity, wherein cooling pipes are installed in the plurality of mounting grooves, wherein cooling grooves are provided inside the plurality of cooling pipes, and wherein a circulating conveying assembly is provided on the plurality of cooling pipes for circulating and conveying a coolant into the cooling grooves;

[0007] Uniform heat dissipation mechanism, the uniform heat dissipation mechanism includes an air groove, a movable groove and a rotating shaft, the air groove and the movable groove are both opened in the cooling pipe, and the air groove and the movable groove are both located below the cooling groove, the air groove and the movable groove are connected to each other, and a through hole connected to the outside is penetrated at the bottom end of the air groove away from the movable groove, the top end of the rotating shaft is rotatably connected to the top wall in the cooling groove, and the bottom end of the rotating shaft penetrates the bottom wall in the cooling groove and extends toward the inside of the movable groove, and is fixedly connected with an incomplete gear, racks are slidably connected on both sides of the movable groove, the two groups of racks are symmetrical to each other, and the two groups of racks are commonly connected to a piston plate at one end facing the air groove, one group of the racks is meshed with one side of the incomplete gear, the piston plate is located in the air groove, and the piston plate is sealed and slidably connected to the air groove, and a driving component is provided on the rotating shaft for driving the rotating shaft to rotate in conjunction with the flowing coolant;

[0008] The first cooling mechanism and the second cooling mechanism are both arranged inside the cooling pipe, and the first cooling mechanism and the second cooling mechanism are respectively located on both sides of the uniform heat dissipation mechanism, and are respectively used to timely cool down the battery block near one end of the water outlet pipe and the battery block near one end of the water inlet pipe.

[0009] Preferably, the circulating conveying component includes an inlet pipe, an outlet pipe and multiple groups of connecting pipes, the inlet pipe and the outlet pipe are symmetrical to each other, and both are located in the cavity, the opening ends of the inlet pipe and the outlet pipe pass through the side wall of the cavity, and are respectively connected to the output end and the input end of the external circulating water pump, and the multiple groups of connecting pipes are symmetrically installed in pairs at the bottom ends of the inlet pipe and the outlet pipe, and the inlet pipe and the outlet pipe are respectively connected to the cooling grooves inside the multiple groups of cooling pipes through the multiple groups of connecting pipes.

[0010] Preferably, the driving assembly comprises a plurality of groups of blades, the plurality of groups of blades are evenly mounted on the outer side wall of the rotating shaft, and the plurality of groups of blades are all located in the cooling groove.

[0011] Preferably, the first cooling mechanism includes a hidden groove, which is opened inside the cooling pipe and is located below the cooling pipe. The hidden groove is located on the side of the uniform heat dissipation mechanism facing the water inlet pipe, and both ends of the hidden groove are connected with the inside of the cooling pipe. The dark groove and the inside of the cooling pipe are connected at a sealing and sliding connection with a connecting block. The non-opposite ends of the two groups of connecting blocks are penetrated by connecting ports. The hidden groove is connected with the inside of the cooling pipe through the connecting ports on the two groups of connecting blocks. A first pushing component is provided inside the cooling pipe for pushing the two groups of connecting blocks to move upward.

[0012] Preferably, the first pushing component includes a first hydraulic groove and a first liquid pushing component, the first hydraulic groove is opened inside the cooling pipe, and the first hydraulic groove is located below the blind groove, the first hydraulic groove is connected with the sliding connection of the two groups of connecting blocks, and hydraulic oil is pumped into the first hydraulic groove, the hydraulic oil is in contact with the bottom ends of the two groups of connecting blocks, and the first liquid pushing component is arranged inside the cooling pipe, for squeezing the hydraulic oil inside the first hydraulic groove.

[0013] Preferably, the first hydraulic pushing component includes a first electric slider, which is laterally slidingly arranged inside the cooling pipe, and is located on a side of the first hydraulic groove close to the water inlet pipe, an end of the first electric slider close to the first hydraulic groove is fixedly connected to a first push column, and the first electric slider is fixedly connected to a first extrusion plate through the first push column, the first extrusion plate is sealingly and slidably connected in the first hydraulic groove, and an end of the first extrusion plate away from the first push column is in contact with the hydraulic oil inside the first hydraulic groove.

[0014] Preferably, the second cooling mechanism includes a slide groove, which is opened at the bottom end of the cooling groove and is located on the side of the uniform heat dissipation mechanism facing the water outlet pipe. A blocking block is sealed and slidably connected in the slide groove, and a second pushing component is arranged inside the cooling pipe for pushing the blocking block upward.

[0015] Preferably, the second pushing assembly includes a second hydraulic groove and a second hydraulic pushing component, the second hydraulic groove is opened inside the cooling pipe, and the second hydraulic groove is located below the cooling groove, the second hydraulic groove is connected to the inside of the slide groove, and hydraulic oil is pumped into the second hydraulic groove, the hydraulic oil is in contact with the bottom end of the blocking block, and the second hydraulic pushing component is arranged inside the cooling pipe, for squeezing the hydraulic oil inside the second hydraulic groove.

[0016] Preferably, the second hydraulic pushing component includes a second electric slider, the second electric slider is transversely slidingly arranged inside the cooling pipe, and the second electric slider is located on a side of the second hydraulic groove close to the water outlet pipe, the end of the second electric slider close to the second hydraulic groove is fixedly connected to a second push column, and the second electric slider is fixedly connected to a second extrusion plate through the second push column, the second extrusion plate is sealingly and slidably connected in the second hydraulic groove, and the end of the second extrusion plate away from the second push column is in contact with the hydraulic oil inside the second hydraulic groove.

[0017] Preferably, a plurality of groups of temperature sensors are installed at the bottom end of each group of the fixing brackets for real-time monitoring of the temperature of the battery blocks on each group of the fixing brackets.

[0018] Compared with the prior art, the advantages of the present invention are:

[0019] 1. The present invention can cool down multiple groups of battery blocks in a battery pack by using a coolant through the provision of a heat dissipation mechanism, and through the cooperation between the heat dissipation mechanism and the uniform heat dissipation mechanism, while cooling down multiple groups of battery blocks, improve the overall cooling effect of the multiple groups of battery blocks, avoid uneven heat dissipation of the battery blocks inside the battery pack, thereby ensuring the heat dissipation efficiency and heat dissipation effect of the battery pack, effectively extending the service life of the battery, and avoiding the problem of damage or even explosion of the battery pack due to excessive temperature.

[0020] 2. The present invention can quickly cool down the battery blocks at the corresponding positions when the temperature of the battery blocks near one end of the water outlet pipe or the battery blocks near one end of the water inlet pipe reaches a dangerous temperature through the cooperation of the temperature sensor, the first cooling mechanism and the second cooling mechanism, thereby effectively improving the overall cooling effect of the battery pack and avoiding the situation where the battery pack explodes and burns due to the inability to cool down the local part of the battery pack due to excessive temperature in time, thereby ensuring the safety of personnel and property. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of a new energy vehicle battery pack proposed by the present invention;

[0022] Figure 2 This is a schematic diagram of the disassembled structure of a new energy vehicle battery pack proposed by the present invention;

[0023] Figure 3 This is a schematic diagram of a half-section axonometric structure of a bottom plate of a new energy vehicle battery pack proposed by the present invention;

[0024] Figure 4 This is a schematic diagram of a half-section axonometric structure of a cooling tube of a new energy vehicle battery pack proposed by the present invention;

[0025] Figure 5 This is a structural schematic diagram of a fixing bracket and a temperature sensor part of a new energy vehicle battery pack proposed by the present invention;

[0026] Figure 6 This is a structural schematic diagram of a rotating shaft and blade parts of a new energy vehicle battery pack proposed by the present invention;

[0027] Figure 7 This is a schematic diagram of the structure of an incomplete gear and rack part of a new energy vehicle battery pack proposed by the present invention;

[0028] Figure 8 This is a schematic structural diagram of a barrier block portion of a new energy vehicle battery pack proposed by the present invention;

[0029] Fig. 9This is a schematic structural diagram of a connecting block portion of a new energy vehicle battery pack proposed by the present invention;

[0030] Fig.10 This is a schematic diagram of the half-section axonometric structure of a connecting block of a new energy vehicle battery pack proposed by the present invention.

[0031] In the figure: 1 bottom plate, 11 control main board, 12 fixing bracket, 13 battery block, 14 water inlet pipe, 15 water outlet pipe, 16 temperature sensor, 2 cooling pipe, 21 cooling groove, 22 dark groove, 3 rotating shaft, 31 blade, 32 incomplete gear, 33 rack, 34 piston plate, 35 air groove, 4 first electric slider, 41 first push column, 42 first hydraulic groove, 43 connecting block, 5 second electric slider, 51 second push column, 52 second hydraulic groove, 53 blocking block. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] Reference Figures 1 to 5 A new energy vehicle battery pack includes a bottom plate 1, a cavity is opened at the top of the bottom plate 1, a control mainboard 11 and multiple groups of fixed brackets 12 are installed on the bottom wall of the cavity, multiple groups of battery blocks 13 are installed on each group of fixed brackets 12, and multiple groups of temperature sensors 16 are installed at the bottom of each group of fixed brackets 12 for real-time monitoring of the temperature of the battery blocks 13 on each group of fixed brackets 12, a heat dissipation mechanism is arranged inside the cavity for dissipating heat for the multiple groups of battery blocks 13, the heat dissipation mechanism includes multiple groups of mounting grooves, the multiple groups of mounting grooves are opened on the bottom wall of the cavity, and cooling pipes 2 are installed in the multiple groups of mounting grooves, and cooling grooves 21 are opened inside the multiple groups of cooling pipes 2, A circulation conveying assembly is commonly provided on the multiple groups of cooling tubes 2, which is used for circulating the coolant into the cooling tank 21. The circulation conveying assembly includes an inlet pipe 14, an outlet pipe 15 and multiple groups of connecting pipes. The inlet pipe 14 and the outlet pipe 15 are symmetrical to each other, and the inlet pipe 14 and the outlet pipe 15 are both located in the cavity. The open ends of the inlet pipe 14 and the outlet pipe 15 pass through the side wall of the cavity and are respectively connected to the output end and the input end of the external circulating water pump. The multiple groups of connecting pipes are respectively installed at the bottom ends of the inlet pipe 14 and the outlet pipe 15 in a symmetrical state in pairs. The inlet pipe 14 and the outlet pipe 15 are respectively connected to the cooling tank 21 inside the multiple groups of cooling tubes 2 through the multiple groups of connecting pipes.

[0034] When the new energy vehicle is driving, when the temperature sensor 16 detects that the multiple battery blocks 13 in the battery pack are heating up, the circulating water pump is started to pump the coolant into the water inlet pipe 14 and discharge it through the water outlet pipe 15, thereby circulating the coolant. After the coolant enters the water inlet pipe 14, it will flow through the cooling tank 21 in the cooling pipe 2. At this time, the coolant in the cooling tank 21 will take away the heat generated by the battery block 13, thereby achieving cooling treatment for the battery block 13.

[0035] Reference Figures 4 to 7 , a uniform heat dissipation mechanism is provided in each of the multiple cooling tubes 2, which is used to cool down the heated coolant, so that the coolant in the cooling tank 21 can achieve uniform heat dissipation, and the uniform heat dissipation mechanism includes an air groove 35, a movable groove and a rotating shaft 3, the air groove 35 and the movable groove are both arranged inside the cooling tube 2, and the air groove 35 and the movable groove are both located below the cooling tank 21, the air groove 35 and the movable groove are connected to each other, and a through hole connected to the outside is penetrated at the bottom end of the air groove 35 away from the movable groove, the top end of the rotating shaft 3 is rotatably connected to the top wall of the cooling tank 21, and the bottom end of the rotating shaft 3 penetrates the bottom wall of the cooling tank 21 and extends toward the inside of the movable tank The movable groove is extended and fixedly connected with an incomplete gear 32. Racks 33 are slidably connected on both sides of the movable groove. The two sets of racks 33 are symmetrical to each other, and one end of the two sets of racks 33 facing the air groove 35 is commonly connected with a piston plate 34, one set of racks 33 is meshed with one side of the incomplete gear 32, the piston plate 34 is located in the air groove 35, and the piston plate 34 is sealed and slidably connected with the air groove 35. A driving assembly is provided on the rotating shaft 3 for driving the rotating shaft 3 to rotate in conjunction with the flowing coolant. The driving assembly includes a plurality of blades 31, and the plurality of blades 31 are evenly mounted on the outer wall of the rotating shaft 3, and the plurality of blades 31 are all located in the cooling groove 21.

[0036] When the coolant flows through the cooling groove 21, under the power of the circulating water pump, the coolant will generate thrust on the blades 31, and then the coolant will push the blades 31 to drive the shaft 3 to rotate along the inner wall of the cooling tube 2. The rotation of the shaft 3 will drive the incomplete gear 32 to move synchronously. Since the incomplete gear 32 is meshed with one of the two sets of racks 33, the incomplete gear 32 can push the rack 33 to slide along the inner wall of the movable groove toward the opening when it rotates. The sliding of the rack 33 will drive the piston plate 34 to move synchronously, so that the piston plate 34 slides along the inner wall of the air groove 35. The sliding of the piston plate 34 will discharge the air inside the air groove 35 through the opening. When the incomplete gear 32 is meshed with the other set of racks 33, it will The rack 33 drives the piston plate 34 to slide in the opposite direction, so that the piston plate 34 forms a negative pressure inside the air groove 35. At this time, the air inside the air groove 35 will be re-inhaled through the opening, and the piston plate 34 will reciprocate along the inner wall of the air groove 35, so that the piston plate 34 will discharge the hot air in the air groove 35 and then inhale the cold air, so that the coolant flowing through the top of the air groove 35 is cooled by the exchange of hot and cold air, so that after the coolant cools down a group of battery blocks 13, it can maintain a relatively low temperature when flowing through the next group of battery blocks 13, thereby improving the overall cooling effect of the multiple groups of battery blocks 13, avoiding uneven heat dissipation of the battery blocks 13 inside the battery pack, and thus ensuring the heat dissipation efficiency and heat dissipation effect of the battery pack.

[0037] Reference Figures 4 to 10, a first cooling mechanism and a second cooling mechanism are respectively arranged inside the cooling tube 2, and the first cooling mechanism and the second cooling mechanism are respectively located on both sides of the uniform heat dissipation mechanism, and are respectively used to timely cool down the battery block 13 near one end of the water outlet pipe 15 and the battery block 13 near one end of the water inlet pipe 14. The first cooling mechanism includes a dark groove 22, and the dark groove 22 is opened inside the cooling tube 2, and the dark groove 22 is located below the cooling groove 21, and the dark groove 22 is located on the side of the uniform heat dissipation mechanism facing the water inlet pipe 14, and both ends of the dark groove 22 are connected with the inside of the cooling groove 21, and the dark groove 22 and the inside of the cooling groove 21 are connected with a connecting block 43 at the connection point, and the two groups of connecting blocks 43 are both penetrated with a connecting port at one end thereof, and the dark groove 22 is connected with the inside of the cooling tube 2 through the connecting port on the two groups of connecting blocks 43. A first pushing component is arranged inside the cooling tube 2, which is used to push the two groups of connecting blocks 43 upward, and the first pushing component includes a first hydraulic groove 42 And a first hydraulic pushing component, a first hydraulic groove 42 is opened inside the cooling pipe 2, and the first hydraulic groove 42 is located below the dark groove 22, the first hydraulic groove 42 is connected with the sliding connection of the two groups of connecting blocks 43, and hydraulic oil is pumped into the first hydraulic groove 42, and the hydraulic oil contacts the bottom ends of the two groups of connecting blocks 43, the first hydraulic pushing component is arranged inside the cooling pipe 2, and is used to squeeze the hydraulic oil inside the first hydraulic groove 42, the first hydraulic pushing component includes a first electric slider 4, the first electric slider 4 is horizontally slidably arranged inside the cooling pipe 2, and the first electric slider 4 is located on the side of the first hydraulic groove 42 close to the water inlet pipe 14, the end of the first electric slider 4 close to the first hydraulic groove 42 is fixedly connected to the first push column 41, and the first electric slider 4 is fixedly connected to the first extrusion plate through the first push column 41, the first extrusion plate is sealingly slidably connected in the first hydraulic groove 42, and the end of the first extrusion plate away from the first push column 41 contacts the hydraulic oil inside the first hydraulic groove 42.

[0038] When the temperature sensor 16 detects that the temperature of the battery block 13 near one end of the water outlet pipe 15 reaches a dangerous temperature, the temperature sensor 16 will transmit an electrical signal to the control mainboard 11, so that the control mainboard 11 starts the first electric slider 4 to slide along the inner wall of the cooling tube 2. The movement of the first electric slider 4 will drive the first push column 41 to move synchronously, thereby causing the first push column 41 to slide along the inner wall of the first hydraulic groove 42. Since hydraulic oil is pumped into the first hydraulic groove 42, the sliding of the first push column 41 will squeeze the hydraulic oil inside the first hydraulic groove 42, thereby causing the liquid inside the first hydraulic groove 42 to The pressurized oil pushes the two groups of connecting blocks 43 upward. At this time, the connecting blocks 43 will reduce the flow of the cooling groove 21. Since the connecting blocks 43 are penetrated with connecting ports, the connecting blocks 43 can divert the coolant, so that most of the coolant will flow into the dark groove 22 through the connecting blocks 43, and then flow out through the other group of connecting blocks 43. At this time, the coolant does not contact the battery block 13 far away from the end of the water outlet pipe 15, so that the coolant maintains a relatively low temperature when it reaches the battery block 13 close to the end of the water outlet pipe 15, so that the coolant quickly cools the battery block 13 close to the end of the water outlet pipe 15.

[0039] Reference Figures 4 to 8 The second cooling mechanism includes a slide groove, which is opened at the bottom end of the cooling groove 21, and the slide groove is located on the side of the uniform heat dissipation mechanism facing the water outlet pipe 15. A blocking block 53 is sealed and slidably connected in the slide groove. A second pushing component is arranged inside the cooling pipe 2 to push the blocking block 53 upward. The second pushing component includes a second hydraulic groove 52 and a second liquid pushing component. The second hydraulic groove 52 is opened inside the cooling pipe 2, and the second hydraulic groove 52 is located below the cooling groove 21. The second hydraulic groove 52 is connected to the inside of the slide groove, and hydraulic oil is pumped into the inside of the second hydraulic groove 52. The hydraulic oil contacts the bottom end of the blocking block 53, and the second liquid pushing component is arranged Inside the cooling pipe 2, the second hydraulic pushing component is used to extrude the hydraulic oil inside the second hydraulic groove 52. The second electric slider 5 is laterally slidably arranged inside the cooling pipe 2, and the second electric slider 5 is located on the side of the second hydraulic groove 52 close to the water outlet pipe 15. The end of the second electric slider 5 close to the second hydraulic groove 52 is fixedly connected to the second push column 51, and the second electric slider 5 is fixedly connected to the second extrusion plate through the second push column 51. The second extrusion plate is sealingly slidably connected in the second hydraulic groove 52, and the end of the second extrusion plate away from the second push column 51 is in contact with the hydraulic oil inside the second hydraulic groove 52.

[0040] When the temperature sensor 16 detects that the temperature of the battery block 13 near one end of the water inlet pipe 14 reaches a dangerous temperature, the control main board 11 will start the second electric slider 5 to slide along the inner wall of the cooling tube 2, thereby driving the first push column 41 to move synchronously, and then the hydraulic oil inside the second hydraulic groove 52 is squeezed by the second push column 51, so that the hydraulic oil inside the second hydraulic groove 52 pushes the blocking block 53 to move up along the inner wall of the slide groove. At this time, the second blocking block 53 will reduce the flow of coolant through the battery block 13 near one end of the water outlet pipe 15, so that the coolant with lower temperature stays under the battery block 13 near one end of the water inlet pipe 14 for a longer time, and then the coolant quickly cools down the battery block 13 near one end of the water inlet pipe 14. Through the provision of the first cooling mechanism and the second cooling mechanism, the overall cooling effect of the battery pack can be effectively improved, and at the same time, it can avoid the explosion and combustion of the battery pack due to the inability to timely cool down the local over-temperature part of the battery pack, thereby ensuring the safety of personnel and property.

[0041] In the present invention, the bottom plate 1 is fixedly installed on the chassis of the new energy vehicle, and then the two ends of the circulating water pump are respectively connected to the water inlet pipe 14 and the water outlet pipe 15. When the battery block 13 of the new energy vehicle generates heat during driving, the circulating water pump is started to pump the coolant into the water inlet pipe 14 and discharge it through the water outlet pipe 15, so that the coolant is circulated. After the coolant enters the water inlet pipe 14, it will flow through the cooling tank 21 in the cooling pipe 2. At this time, the coolant in the cooling tank 21 will take away the heat generated by the battery block 13, thereby realizing the temperature reduction treatment of the battery block 13.

[0042] When the coolant cools the battery block 13, the coolant will flow in the cooling tank 21 along the direction from the water inlet pipe 14 to the water outlet pipe 15. At the same time, since the upper end of a group of cooling tubes 2 is often connected to multiple groups of battery blocks 13, the temperature of the coolant is relatively low when it flows through the first group of battery blocks 13, and the temperature is relatively high when it flows through the second group of battery blocks 13. At this time, the cooling effect of the coolant on the battery block 13 is reduced, and the temperature of the battery block 13 cannot be reduced to a suitable operating temperature. When the coolant flows through the inside of the cooling tank 21, under the power of the circulating water pump, the coolant will generate thrust on the blades 31, and the coolant will push the blades 31 to drive the shaft 3 to rotate along the inner wall of the cooling tube 2. The rotation of the shaft 3 will drive the incomplete gear 32 to move synchronously. The rotation of the incomplete gear 32 will mesh with one of the two groups of racks 33, and the incomplete gear 32 will push the rack 33 to slide from right to left along the inner wall of the moving groove (such as Figure 6), the sliding of the rack 33 will drive the piston plate 34 to move synchronously, so that the piston plate 34 slides along the inner wall of the air groove 35. The sliding of the piston plate 34 will discharge the air inside the air groove 35 through the opening, and when the incomplete gear 32 is meshed with another set of racks 33, the rack 33 will drive the piston plate 34 to slide in the opposite direction, so that the piston plate 34 will form a negative pressure inside the air groove 35. At this time, the air inside the air groove 35 will be re-inhaled through the opening, and then the piston plate 34 will reciprocate along the inner wall of the air groove 35, so that the piston plate 34 will discharge the hot air in the air groove 35 and then inhale the cold air, so that the coolant flowing through the top of the air groove 35 is cooled by the exchange of hot and cold air, so that after the coolant cools down a group of battery blocks 13, it can maintain a relatively low temperature when flowing through the next group of battery blocks 13, thereby improving the overall cooling effect of the battery blocks 13.

[0043] When the temperature sensor 16 detects that the temperature of the battery block 13 near one end of the water outlet pipe 15 reaches a dangerous temperature, the temperature sensor 16 will sense the temperature change. At this time, the temperature sensor 16 will transmit an electrical signal to the control mainboard 11, and the control mainboard 11 will start the first electric slider 4, so that the first electric slider 4 slides along the inner wall of the cooling tube 2. The movement of the first electric slider 4 will drive the first push column 41 to move synchronously, so that the first push column 41 slides along the inner wall of the first hydraulic groove 42. Since hydraulic oil is pumped into the first hydraulic groove 42, the sliding of the first push column 41 will squeeze the hydraulic oil inside the first hydraulic groove 42, thereby causing the first hydraulic groove 42 to be filled with water. The hydraulic oil inside pushes the two groups of connecting blocks 43 to slide along the inner wall of the dark groove 22. At this time, the connecting blocks 43 will reduce the flow of the cooling groove 21. Since the connecting blocks 43 are provided with connecting ports, the connecting blocks 43 can divert the coolant, so that most of the coolant flows into the dark groove 22 through the connecting blocks 43, and then flows out through the other group of connecting blocks 43. At this time, the coolant does not contact the battery block 13 far away from the end of the water outlet pipe 15, so that the coolant maintains a relatively low temperature when it reaches the battery block 13 close to the end of the water outlet pipe 15, so that the coolant quickly cools the battery block 13 close to the end of the water outlet pipe 15. At the same time, when the temperature sensor 16 detects that the temperature of the battery block 13 near one end of the water inlet pipe 14 reaches a dangerous temperature, the control main board 11 will start the second electric slider 5, so that the second electric slider 5 squeezes the hydraulic oil inside the second hydraulic groove 52 through the second push column 51, so that the hydraulic oil inside the second hydraulic groove 52 pushes the blocking block 53 to slide along the inner wall of the slide groove. At this time, the second blocking block 53 will reduce the flow of coolant through the battery block 13 near one end of the water outlet pipe 15, so that the coolant with lower temperature stays under the battery block 13 near one end of the water inlet pipe 14 for a longer time, thereby allowing the coolant to quickly cool down the battery block 13 near one end of the water inlet pipe 14, thereby improving the overall cooling effect on the battery pack.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A new energy vehicle battery pack, comprising a base plate (1), wherein a cavity is formed at the top of the base plate (1), a control mainboard (11) and a plurality of fixed brackets (12) are mounted on the bottom wall of the cavity, and each of the fixed brackets (12) is mounted with a plurality of battery blocks (13), characterized in that: Also includes: A heat dissipation mechanism, the heat dissipation mechanism comprising a plurality of groups of mounting grooves, the plurality of groups of mounting grooves being arranged on the bottom wall of the cavity, and cooling pipes (2) being arranged in the plurality of groups of mounting grooves, cooling grooves (21) being arranged inside the plurality of groups of cooling pipes (2), and a circulation conveying assembly being arranged on the plurality of groups of cooling pipes (2) for circulating and conveying a coolant into the cooling grooves (21); A uniform heat dissipation mechanism, the uniform heat dissipation mechanism comprising an air groove (35), a movable groove and a rotating shaft (3), the air groove (35) and the movable groove are both arranged inside the cooling pipe (2), and the air groove (35) and the movable groove are both located below the cooling groove (21), the air groove (35) and the movable groove are connected to each other, a through hole connected to the outside is penetrated at the bottom end of the air groove (35) away from the movable groove, the top end of the rotating shaft (3) is rotatably connected to the inner top wall of the cooling groove (21), and the bottom end of the rotating shaft (3) penetrates the inner bottom wall of the cooling groove (21) and extends toward the inside of the movable groove, and is fixed An incomplete gear (32) is fixedly connected, racks (33) are slidably connected on both sides of the movable groove, the two groups of racks (33) are symmetrical to each other, and one end of the two groups of racks (33) facing the air groove (35) is commonly connected to a piston plate (34), one group of the racks (33) is meshed with one side of the incomplete gear (32), the piston plate (34) is located in the air groove (35), and the piston plate (34) is sealed and slidably connected to the air groove (35), and a driving component is arranged on the rotating shaft (3) for driving the rotating shaft (3) to rotate in coordination with the flowing coolant; A first cooling mechanism and a second cooling mechanism, wherein the first cooling mechanism and the second cooling mechanism are both arranged inside the cooling pipe (2), and the first cooling mechanism and the second cooling mechanism are respectively located on both sides of the uniform heat dissipation mechanism, and are respectively used to timely cool down the battery block (13) near one end of the water outlet pipe (15) and timely cool down the battery block (13) near one end of the water inlet pipe (14).

2. A new energy vehicle battery pack according to claim 1, characterized in that: The circulating conveying assembly comprises an inlet pipe (14), an outlet pipe (15) and a plurality of connecting pipes. The inlet pipe (14) and the outlet pipe (15) are symmetrical to each other and are both located in the cavity. The opening ends of the inlet pipe (14) and the outlet pipe (15) penetrate the side wall of the cavity and are respectively connected to the output end and the input end of an external circulating water pump. The plurality of connecting pipes are respectively installed at the bottom ends of the inlet pipe (14) and the outlet pipe (15) in a symmetrical state. The inlet pipe (14) and the outlet pipe (15) are respectively connected to the cooling grooves (21) inside the plurality of cooling pipes (2) through the plurality of connecting pipes.

3. A new energy vehicle battery pack according to claim 1, characterized in that: The driving assembly comprises a plurality of groups of blades (31), the plurality of groups of blades (31) are evenly mounted on the outer side wall of the rotating shaft (3), and the plurality of groups of blades (31) are all located in the cooling groove (21).

4. A new energy vehicle battery pack according to claim 1, characterized in that: The first cooling mechanism comprises a hidden groove (22), the hidden groove (22) being arranged inside the cooling pipe (2), and the hidden groove (22) being located below the cooling groove (21), the hidden groove (22) being located on the side of the uniform heat dissipation mechanism facing the water inlet pipe (14), and both ends of the hidden groove (22) being connected to the inside of the cooling groove (21), the hidden groove (22) and the inside of the cooling groove (21) being connected at a sealed and sliding connection with a connecting block (43), the non-opposite ends of the two groups of connecting blocks (43) being penetrated by connecting openings, the hidden groove (22) being connected to the inside of the cooling pipe (2) through the connecting openings on the two groups of connecting blocks (43), and the cooling pipe (2) being provided with a first pushing component inside for pushing the two groups of connecting blocks (43) to move upward.

5. A new energy vehicle battery pack according to claim 4, characterized in that: The first pushing component comprises a first hydraulic groove (42) and a first liquid pushing component. The first hydraulic groove (42) is opened inside the cooling pipe (2), and the first hydraulic groove (42) is located below the dark groove (22). The first hydraulic groove (42) is connected to the sliding connection of the two groups of connecting blocks (43), and hydraulic oil is pumped into the first hydraulic groove (42). The hydraulic oil contacts the bottom ends of the two groups of connecting blocks (43). The first liquid pushing component is arranged inside the cooling pipe (2) and is used to squeeze the hydraulic oil inside the first hydraulic groove (42).

6. A new energy vehicle battery pack according to claim 5, characterized in that: The first hydraulic pushing component comprises a first electric slider (4), the first electric slider (4) is transversely slidably arranged inside the cooling pipe (2), and the first electric slider (4) is located on a side of the first hydraulic groove (42) close to the water inlet pipe (14), one end of the first electric slider (4) close to the first hydraulic groove (42) is fixedly connected to a first push column (41), and the first electric slider (4) is fixedly connected to a first extrusion plate through the first push column (41), the first extrusion plate is sealingly slidably connected inside the first hydraulic groove (42), and one end of the first extrusion plate away from the first push column (41) is in contact with the hydraulic oil inside the first hydraulic groove (42).

7. A new energy vehicle battery pack according to claim 1, characterized in that: The second cooling mechanism comprises a slide groove, which is opened at the bottom end of the cooling groove (21) and is located on the side of the uniform heat dissipation mechanism facing the water outlet pipe (15). A blocking block (53) is sealed and slidably connected in the slide groove, and a second pushing component is arranged inside the cooling pipe (2) for pushing the blocking block (53) upward.

8. A new energy vehicle battery pack according to claim 7, characterized in that: The second pushing component comprises a second hydraulic groove (52) and a second hydraulic pushing component, wherein the second hydraulic groove (52) is opened inside the cooling pipe (2), and the second hydraulic groove (52) is located below the cooling groove (21), the second hydraulic groove (52) is connected to the inside of the slide groove, and hydraulic oil is pumped into the second hydraulic groove (52), and the hydraulic oil is in contact with the bottom end of the blocking block (53), and the second hydraulic pushing component is arranged inside the cooling pipe (2) and is used to squeeze the hydraulic oil inside the second hydraulic groove (52).

9. A new energy vehicle battery pack according to claim 8, characterized in that: The second hydraulic pushing component comprises a second electric slider (5), the second electric slider (5) is transversely slidably arranged inside the cooling pipe (2), and the second electric slider (5) is located on a side of the second hydraulic groove (52) close to the water outlet pipe (15), one end of the second electric slider (5) close to the second hydraulic groove (52) is fixedly connected to a second push column (51), and the second electric slider (5) is fixedly connected to a second extrusion plate through the second push column (51), the second extrusion plate is sealingly slidably connected in the second hydraulic groove (52), and one end of the second extrusion plate away from the second push column (51) is in contact with the hydraulic oil inside the second hydraulic groove (52).

10. A new energy vehicle battery pack according to claim 1, characterized in that: A plurality of groups of temperature sensors (16) are installed at the bottom end of each group of the fixing brackets (12) for real-time monitoring of the temperature of the battery blocks (13) on each group of the fixing brackets (12).

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