A low temperature resistant battery pack for new energy vehicles

Abstract

The present invention discloses a low temperature resistant battery pack for new energy vehicles, including a battery assembly, a heating assembly and a circulation assembly. The battery assembly is used to provide total power to the new energy vehicle, and the heating assembly is used to collect the heat generated when the battery is running to heat the stored water source. The heating assembly includes a heat preservation box fixedly connected to one side of the battery compartment, and the interior of the battery compartment is fixedly connected to two heat absorbing orifice plates, and one end of the two heat absorbing orifice plates close to the heat preservation box is fixedly connected to a heat conducting plate. The present invention absorbs the heat emitted by the battery when it is working through two heat absorbing orifice plates, and then guides the heat inside the heat absorbing orifice plates to the inside of the heat conducting wire through the heat conducting plate. A number of heat conducting wires heat up and heat the water inside the heat preservation box. On the one hand, it can absorb the heat emitted by the battery when it is working, and on the other hand, it can store part of the heat energy in hot water for standby use.

Description

Technical Field

[0001] The present invention relates to the field of battery technology, and in particular to a low-temperature resistant battery pack for new energy vehicles. Background Art

[0002] With the rapid development of electric vehicles, the performance of power batteries has become the key to the popularization of electric vehicles. Lithium-ion batteries and nickel-metal hydride batteries are one of the key components of electric vehicles. Their temperature sensitivity has become a bottleneck restricting the development of electric vehicles. Running at low or high temperatures will accelerate the battery life decay and deteriorate its safety performance. Therefore, it is necessary to control the temperature of the battery pack.

[0003] For current battery packs, such as a new energy vehicle low-temperature resistant battery pack disclosed in Chinese patent announcement number "CN116053657B", the battery pack is cooled or kept warm by exhausting air. However, most of the vehicle battery packs are in continuous use for a long time during use. The temperature of the battery rises or loses temperature very quickly due to the use time and the influence of the external environment. The wind-powered heat preservation and heat dissipation is not only inefficient, but also suffers from severe temperature loss. The heating wire also needs to be continuously heated during use, and the overall effect is poor. Accordingly, the present invention proposes a new energy vehicle low-temperature resistant battery pack. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a low-temperature resistant battery pack for new energy vehicles.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A low temperature resistant battery pack for new energy vehicles, comprising a battery assembly, a heating assembly and a circulation assembly;

[0007] The battery assembly is used to provide total power supply for new energy vehicles. The battery assembly includes a battery compartment and a ventilation plate fixedly connected to the inside of the battery compartment. Both sides of the ventilation plate are fixedly connected to a plurality of batteries.

[0008] The upper and lower ends of the battery compartment are fixedly connected with a heat preservation shell;

[0009] The heating component is used to collect the heat generated by the battery during normal operation to heat the stored water source. The heating component includes a heat preservation box fixedly connected to one side of the battery compartment. Two heat absorbing orifice plates are fixedly connected to the inside of the battery compartment. One end of the two heat absorbing orifice plates close to the heat preservation box is fixedly connected to a heat conducting plate. Both of the two heat conducting plates pass through the battery compartment and extend to the inside of the heat preservation box. A number of heat conducting wires are fixedly connected between the two heat conducting plates and located inside the heat preservation box. A cooling component for quickly dissipating heat and cooling the water source is provided at the bottom of the heat preservation box;

[0010] The circulation component is used to continuously circulate the water source for heat preservation or cooling inside the battery compartment. The circulation component includes a fixing box fixed to one side of the battery compartment and a water tank fixedly connected to the inside of the fixing box.

[0011] Preferably, the cooling component includes a heat sink fixedly connected to the bottom of the insulation box, a transverse tube is fixedly connected to the interior of the heat sink, a plurality of atomizing nozzles are fixedly connected to the bottom of the transverse tube, the interior of the heat sink is rotatably connected to a first rotating shaft, and a spiral blade is fixedly connected to the first rotating shaft.

[0012] Preferably, the fixed box is rotatably connected with a reciprocating screw, the reciprocating screw is threadedly sleeved with a screw nut, and the screw nut is fixedly connected with two push rods, and the ends of the two push rods away from the screw nut are fixedly connected with pistons that are slidably connected to the pistons in the water tank, and a shunt pipe is fixedly connected to one side of the water tank, and capillary flow tubes are fixedly connected to both sides of the battery compartment near the battery, one end of the two capillary flow tubes are respectively fixedly connected to the two ends of the shunt pipe, and the other ends of the two capillary flow tubes are fixedly connected to the converter, the converter and the insulation box are connected to each other, and the insulation box and the water tank are connected by a first water inlet pipe, the reciprocating screw and the first rotating shaft are synchronously driven and connected by a driving assembly, and a filtering assembly for descaling and filtering the circulating water source is provided inside the fixed box and on the shunt pipe.

[0013] Preferably, the driving assembly includes a fixed plate fixedly connected to the bottom of the heat dissipation box, a motor is fixedly connected to the fixed plate, a driving end of the motor is fixedly connected to the first rotating shaft, a first bevel gear is fixedly connected to the driving end of the motor, two fixed blocks are fixedly connected to one side of the insulation shell, a second rotating shaft is rotatably connected between the two fixed blocks, a second bevel gear is fixedly connected to the side of the second rotating shaft close to the first bevel gear, and the second rotating shaft is connected to the reciprocating screw through a synchronous belt.

[0014] Preferably, the filter assembly includes a filter box fixedly connected to the diversion pipe, the interior of the filter box is slidably connected to an adsorption orifice plate, one side of the adsorption orifice plate and located on the outside of the filter box is fixedly connected to a sealing pull plate, a plurality of holes and grooves are opened on the adsorption orifice plate, and cleaning rings are fixedly connected inside the holes and grooves of the adsorption orifice plate.

[0015] Preferably, the heat sink and the converter are connected via a return pipe, and the return pipe is communicated with the cross pipe.

[0016] Preferably, a temperature sensor is fixedly connected to the top of the fixing box.

[0017] Preferably, a plurality of heat-conducting holes are provided on the heat-absorbing orifice plate, and the heat-conducting wire is composed of a transverse "U"-shaped structure.

[0018] The present invention has the following beneficial effects:

[0019] 1. By setting a circulation component and a heating component, the heat emitted by the battery during operation can be absorbed by two heat-absorbing orifice plates, and then the heat inside the heat-absorbing orifice plates is guided to the inside of the heat-conducting wire through the heat-conducting plate. Several heat-conducting wires are heated and heat the water inside the heat-insulating box. On the one hand, the heat emitted by the battery during operation can be absorbed, and on the other hand, part of the heat energy can be stored in hot water for standby use. When the temperature sensor detects that the external temperature is lower than the minimum value of the effective activity of the battery, the motor is started, and the motor drives the first bevel gear to rotate. The first bevel gear synchronously drives the second bevel gear and the second rotating shaft thereon to rotate. The second rotating shaft drives the reciprocating screw to rotate through the synchronous belt. The reciprocating screw rotates and drives the screw nut thereon to drive the push rod to slide back and forth. The push rod pushes the piston to push and pull back and forth inside the water tank. At this time, the piston draws hot water from the inside of the heat-insulating box through the first water inlet pipe through the atmospheric pressure, and then guides the hot water to the inside of the two capillary flow tubes through the shunt pipe for a circular circulation, so as to heat the inside of the battery compartment and prevent the battery temperature from being too low to affect the operation of the car.

[0020] 2. By setting the driving component and the cooling component, the temperature inside the battery compartment can be detected by the temperature sensor. When the temperature is higher than the maximum value of the effective activity of the battery, the water channel port of the converter is first switched to the return pipe. At this time, the motor is started, and the motor drives the first rotating shaft and drives the spiral blades thereon to rotate. At this time, the hot water returning through the capillary tube enters the heat sink through the return pipe, and then the water is atomized and sprayed out through the cross pipe and the atomizing nozzle on the cross pipe, which can efficiently dissipate the water once, and then the continuous stirring of the spiral blades dissipates the water inside the heat sink for a second time. At the same time, the motor drives the circulation component to move, and the piston draws the cold water inside the heat sink through the second water inlet pipe into the first water inlet pipe through the atmospheric pressure, and then flows into the water tank through the first water inlet pipe, and finally the cold water is introduced into the capillary tube through the shunt pipe for circulation, so as to absorb the excess heat inside the battery compartment and quickly cool the battery, which can effectively prevent the battery from being damaged or even causing fire due to excessive temperature.

[0021] 3. By setting up a filter component, the cleaning ring can be dissolved when water flows through the inside of the filter box. At this time, the dissolved fixed cleaning agent circulates with the water flow to every part of the entire system to absorb and clean the scale inside. When the water flows through the filter box again, the adsorption orifice plate adsorbs and filters the scale impurities mixed in the water flow, so that the scale can be automatically removed in the whole water cycle. When the adsorption orifice plate filters to a certain extent, it can be replaced by removing the screws and pulling the sealing pull plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the main structure of a low-temperature resistant battery pack for new energy vehicles proposed by the present invention;

[0023] Figure 2 This is a schematic diagram of the side view structure of a low-temperature resistant battery pack for new energy vehicles proposed by the present invention;

[0024] Figure 3 It is a schematic diagram of the structure inside the heat-insulating shell of the present invention;

[0025] Figure 4 It is a structural schematic diagram of the bottom of the heat absorbing orifice plate in the present invention;

[0026] Figure 5 It is a structural schematic diagram of the heating component in the present invention;

[0027] Figure 6 It is a schematic diagram of the structure inside the heat dissipation box of the present invention;

[0028] Figure 7 It is a schematic diagram of the structure inside the fixed box of the present invention;

[0029] Figure 8 It is a schematic diagram of the structure inside the filter box of the present invention;

[0030] Fig. 9 It is a schematic diagram of the structure of the battery pack in the present invention;

[0031] Fig.10 for Figure 1 A is a schematic diagram of the enlarged structure of the middle part;

[0032] Fig.11 It is a schematic diagram of the structure in which two heat absorbing orifice plates are connected in the present invention.

[0033] In the figure: 1 battery compartment, 2 insulation shell, 3 insulation box, 4 heat absorption orifice plate, 5 heat conduction plate, 6 heat conduction wire, 7 fixed box, 8 reciprocating screw, 9 screw nut, 10 push rod, 11 piston, 12 water tank, 13 shunt pipe, 14 capillary flow tube, 15 converter, 16 first water inlet pipe, 17 heat dissipation box, 18 return pipe, 19 cross pipe, 20 atomizing nozzle, 21 first rotating shaft, 22 spiral blade, 23 second water inlet pipe, 24 fixed plate, 25 motor, 26 first bevel gear, 27 fixed block, 28 second rotating shaft, 29 second bevel gear, 30 synchronous belt, 31 filter box, 32 adsorption orifice plate, 33 sealing pull plate, 34 cleaning ring, 35 ventilation plate, 36 battery, 37 temperature sensor. DETAILED DESCRIPTION

[0034] 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.

[0035] Embodiment 1:

[0036] Reference Figure 1-Figure 11 , a low temperature resistant battery pack for new energy vehicles, comprising: a battery assembly, a heating assembly and a circulation assembly;

[0037] The battery assembly is used to provide total power supply for the new energy vehicle. The battery assembly includes a battery compartment 1 and a vent plate 35 fixedly connected to the inside of the battery compartment 1. Both sides of the vent plate 35 are fixedly connected with a plurality of batteries 36.

[0038] The upper and lower ends of the battery compartment 1 are fixedly connected with a heat preservation shell 2;

[0039] The heating component is used to collect the heat generated by the battery 36 when it is running to heat the stored water source. The heating component includes a heat preservation box 3 fixedly connected to one side of the battery compartment 1. Two heat absorbing orifice plates 4 are fixedly connected to the inside of the battery compartment 1. The two heat absorbing orifice plates 4 are fixedly connected to one end of the heat preservation box 3. The two heat conducting plates 5 pass through the battery compartment 1 and extend to the inside of the heat preservation box 3. A plurality of heat conducting wires 6 are fixedly connected between the two heat conducting plates 5 and located inside the heat preservation box 3. A cooling component for quickly dissipating heat and cooling the water source is provided at the bottom of the heat preservation box 3;

[0040] The circulation component is used to continuously circulate the water source for heat preservation or cooling inside the battery compartment 1, and the circulation component includes a fixing box 7 fixed to one side of the battery compartment 1 and a water tank 12 fixedly connected to the fixing box 7;

[0041] In this embodiment, the heat emitted by the battery 36 when working is absorbed by two heat absorbing orifice plates 4, and then the heat inside the heat absorbing orifice plates 4 is guided to the inside of the heat conducting wires 6 through the heat conducting plate 5. The heat conducting wires 6 are heated up and heat the water inside the heat preservation box 3. On the one hand, the heat emitted by the battery 36 when working can be absorbed, and on the other hand, part of the heat energy can be stored in hot water for standby use.

[0042] In addition, the temperature inside the battery compartment 1 can be effectively insulated by the insulation shell 2, and it can be relatively isolated from the external temperature. The ventilation plate 35 can evenly disperse the temperature inside the entire battery compartment 1 without causing uneven temperature, thereby achieving balanced temperature regulation.

[0043] Embodiment 2:

[0044] Reference Figure 1-Figure 5 and Figure 7 and Fig. 9 Compared with the first embodiment, in the present embodiment, a reciprocating screw 8 is rotatably connected inside the fixed box 7, a screw nut 9 is threadedly sleeved on the reciprocating screw 8, two push rods 10 are fixedly connected to the screw nut 9, one end of the two push rods 10 away from the screw nut 9 is fixedly connected to a piston 11 which is slidably connected to the piston between the water tank 12, a shunt pipe 13 is fixedly connected to one side of the water tank 12, and capillary flow tubes 14 are fixedly connected on both sides of the battery compartment 1 near the battery 36, one end of the two capillary flow tubes 14 is fixedly connected to the two ends of the shunt pipe 13 respectively, and the other ends of the two capillary flow tubes 14 are fixedly connected to the converter 15, the converter 15 and the insulation box 3 are connected to each other, and the insulation box 3 and the water tank 12 are connected through a first water inlet pipe 16.

[0045] The driving assembly includes a fixed plate 24 fixedly connected to the bottom of the heat sink 17, a motor 25 fixedly connected to the fixed plate 24, a driving end of the motor 25 fixedly connected to the first rotating shaft 21, a first bevel gear 26 fixedly connected to the driving end of the motor 25, two fixed blocks 27 fixedly connected to one side of an insulation shell 2, a second rotating shaft 28 rotatably connected between the two fixed blocks 27, a second bevel gear 29 fixedly connected to the side of the second rotating shaft 28 close to the first bevel gear 26, and the second rotating shaft 28 is connected to the reciprocating screw 8 through a synchronous belt 30.

[0046] In this embodiment, when the temperature sensor 37 detects that the external temperature is lower than the minimum value of the effective activity of the battery, the motor 25 is started, and the motor 25 drives the first bevel gear 26 to rotate. The first bevel gear 26 synchronously drives the second bevel gear 29 and the second rotating shaft 28 thereon to rotate. The second rotating shaft 28 drives the reciprocating screw 8 to rotate through the synchronous belt 30. The reciprocating screw 8 rotates and drives the screw nut 9 thereon to drive the push rod 10 to slide back and forth. The push rod 10 pushes the piston 11 to push and pull back and forth inside the water tank 12. At this time, the piston 11 draws hot water from the inside of the insulation box 3 through the first water inlet pipe 16 through the atmospheric pressure, and then guides the hot water to the inside of the two capillary flow tubes 14 through the shunt pipe 13 for a circular circulation, so as to heat the inside of the battery compartment 1 and prevent the battery 36 from being too low in temperature and affecting the operation of the car.

[0047] Furthermore, the temperature of the internal water flow can be dissipated to the maximum extent through the capillary flow tube 14 , and the temperature of the water flow can be maintained more comprehensively and lastingly through the bending design, thereby more effectively adjusting the temperature inside the battery compartment 1 .

[0048] Embodiment three:

[0049] Reference Figure 1-Figure 6 Compared with the first and second embodiments, the cooling component in this embodiment includes a heat sink 17 fixedly connected to the bottom of the heat preservation box 3, a transverse tube 19 is fixedly connected to the interior of the heat sink 17, a plurality of atomizing nozzles 20 are fixedly connected to the bottom of the transverse tube 19, a first rotating shaft 21 is rotatably connected to the interior of the heat sink 17, and a spiral blade 22 is fixedly connected to the first rotating shaft 21.

[0050] In this embodiment, the temperature inside the battery compartment 1 is detected by a temperature sensor. When the temperature is higher than the maximum value of the effective activity of the battery, the water channel of the converter 15 is first switched to the return pipe 18. At this time, the motor 25 is started, and the motor 25 drives the first rotating shaft 21 and drives the spiral blade 22 thereon to rotate. At this time, the hot water refluxed through the capillary flow tube 14 enters the heat dissipation box 17 through the return pipe 18, and then the water is atomized and sprayed out through the cross pipe 19 and the atomizing nozzle 20 on the cross pipe 19, which can efficiently dissipate the water once, and then the continuous stirring of the spiral blade 22 dissipates the water inside the heat dissipation box 17 for a second time;

[0051] At the same time, the motor drives the circulation component to move, and the piston 11 uses atmospheric pressure to draw the cold water inside the heat sink 17 into the first water inlet pipe 16 through the second water inlet pipe 23, and then flows into the water tank 12 through the first water inlet pipe 16. Finally, the cold water is introduced into the capillary flow tube 14 through the shunt pipe 13 for circulation, so as to absorb the excess heat inside the battery compartment 1 and quickly cool down the battery 36, which can effectively prevent the battery 36 from being damaged or even causing fire due to excessive temperature.

[0052] Embodiment 4:

[0053] Reference Figure 8 Compared with the first embodiment, the second embodiment and the third embodiment, the filter assembly in this embodiment includes a filter box 31 fixedly connected to the shunt pipe 13, and an adsorption orifice plate 32 is slidably connected inside the filter box 31. A sealing pull plate 33 is fixedly connected to one side of the adsorption orifice plate 32 and located on the outside of the filter box 31. A plurality of holes and grooves are opened on the adsorption orifice plate 32, and cleaning rings 34 are fixedly connected inside the holes and grooves of the adsorption orifice plate 32.

[0054] In this embodiment, the cleaning ring 34 can be dissolved when water flows through the inside of the filter box 31. At this time, the dissolved fixed cleaning agent circulates with the water flow to every part of the entire system to absorb and clean the scale inside. When the water flows through the filter box 31 again, the adsorption orifice plate 32 adsorbs and filters the scale impurities mixed in the water flow, so that the scale can be automatically removed in the entire water cycle. When the adsorption orifice plate 32 filters to a certain extent, it can be replaced by removing the screws and pulling the sealing pull plate 33, so as to perform regular maintenance on the filter component.

[0055] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A low temperature resistant battery pack for new energy vehicles, comprising a battery assembly, a heating assembly and a circulation assembly, characterized in that: The battery assembly is used to provide overall power supply for a new energy vehicle, and the battery assembly comprises a battery compartment (1) and a ventilation plate (35) fixedly connected to the inside of the battery compartment (1), and a plurality of batteries (36) are fixedly connected to both sides of the ventilation plate (35); The upper and lower ends of the battery compartment (1) are both fixedly connected with a heat-insulating shell (2); The heating component is used to collect the heat generated by the battery (36) during normal operation to heat the stored water source. The heating component comprises a heat preservation box (3) fixedly connected to one side of the battery compartment (1). Two heat absorbing orifice plates (4) are fixedly connected to the interior of the battery compartment (1). One end of the two heat absorbing orifice plates (4) close to the heat preservation box (3) is fixedly connected to a heat conducting plate (5). The two heat conducting plates (5) pass through the battery compartment (1) and extend to the interior of the heat preservation box (3). A plurality of heat conducting wires (6) are fixedly connected between the two heat conducting plates (5) and located inside the heat preservation box (3). A cooling component for quickly dissipating heat and cooling the water source is provided at the bottom of the heat preservation box (3); The circulation component is used to continuously circulate a water source for heat preservation or cooling inside the battery compartment (1), and the circulation component comprises a fixing box (7) fixed to one side of the battery compartment (1) and a water tank (12) fixedly connected to the inside of the fixing box (7); The fixed box (7) is internally rotatably connected to a reciprocating screw (8), a screw nut (9) is threadedly sleeved on the reciprocating screw (8), two push rods (10) are fixedly connected to the screw nut (9), one end of the two push rods (10) away from the screw nut (9) is fixedly connected to a piston (11) that is slidably connected to a piston between a water tank (12), one side of the water tank (12) is fixedly connected to a shunt pipe (13), and both sides of the battery compartment (1) near the battery (36) are fixedly connected to capillary flow tubes (14), and the two capillary flow tubes (14) are fixedly connected to the battery compartment (1). One end is fixedly connected to the two ends of the shunt pipe (13), the other ends of the two capillary flow tubes (14) are fixedly connected to the converter (15), the converter (15) and the heat preservation box (3) are connected to each other, the heat preservation box (3) and the water tank (12) are connected via a first water inlet pipe (16), the reciprocating screw (8) and the first rotating shaft (21) are synchronously driven and connected via a driving component, and a filtering component for removing scale and filtering the circulating water source is provided inside the fixed box (7) and on the shunt pipe (13); The driving assembly comprises a fixing plate (24) fixedly connected to the bottom of the heat dissipation box (17), a motor (25) fixedly connected to the fixing plate (24), a driving end of the motor (25) fixedly connected to the first rotating shaft (21), a first bevel gear (26) fixedly connected to the driving end of the motor (25), two fixing blocks (27) fixedly connected to one side of the heat preservation shell (2), a second rotating shaft (28) rotatably connected between the two fixing blocks (27), a second bevel gear (29) fixedly connected to the side of the second rotating shaft (28) close to the first bevel gear (26), and the second rotating shaft (28) is connected to the reciprocating screw (8) via a synchronous belt (30).

2. A low temperature resistant battery pack for new energy vehicles according to claim 1, characterized in that: The cooling component comprises a heat dissipation box (17) fixedly connected to the bottom of the heat preservation box (3); a transverse tube (19) is fixedly connected to the interior of the heat dissipation box (17); a plurality of atomizing nozzles (20) are fixedly connected to the bottom of the transverse tube (19); a first rotating shaft (21) is rotatably connected to the interior of the heat dissipation box (17); and a spiral blade (22) is fixedly connected to the first rotating shaft (21).

3. A new energy vehicle low temperature resistant battery pack according to claim 1, characterized in that: The filter assembly comprises a filter box (31) fixedly connected to the shunt pipe (13); an adsorption orifice plate (32) is slidably connected inside the filter box (31); a sealing pull plate (33) is fixedly connected to one side of the adsorption orifice plate (32) and located outside the filter box (31); a plurality of holes and grooves are formed on the adsorption orifice plate (32); and cleaning rings (34) are fixedly connected inside the holes and grooves of the adsorption orifice plate (32).

4. A low temperature resistant battery pack for new energy vehicles according to claim 2, characterized in that: The heat sink (17) and the converter (15) are connected via a return pipe (18), and the return pipe (18) and the cross pipe (19) are in communication.

5. The low temperature resistant battery pack for new energy vehicles according to claim 1, characterized in that: A temperature sensor (37) is fixedly connected to the top of the fixing box (7).

6. A new energy vehicle low temperature resistant battery pack according to claim 1, characterized in that: The heat absorbing orifice plate (4) is provided with a plurality of heat conducting holes, and the heat conducting wire (6) is formed into a transverse "U"-shaped structure.

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