A cooling system for battery management of electric vehicles

Abstract

The present invention relates to a cooling system for battery management of electric vehicles. The tail end heat sink ring and the top end heat sink ring are both provided with a fin slot; a heat sink is fixed between the tail end heat sink ring and the top end heat sink ring through the fin slot; a plurality of heat sinks arranged in a circle constitute a heat sink tube; the side wall of the wind slot adjustment tube is provided with slots at equal intervals, and each of the slots is inserted with a heat sink; the number of heat sinks in the heat sink tube is the same as the number of slots; the present invention adopts a fairing, a wind slot adjustment tube, a heat sink, a cold storage source tube, a valve core, a cold source return tube, and a stepper motor core component to form a single heat sink module; a plurality of single heat sink modules are fixed on a base platform to form a heat sink module system framework, and the front end of the heat sink module system framework is placed on the air intake grille at the front end of the car. The technical solution realizes the manufacture of the cooling system for battery management of electric vehicles.

Description

Technical Field

[0001] The invention relates to a cooling system for battery management of an electric vehicle. Background Art

[0002] The battery management system is the link between the battery and the user. Its main target is secondary batteries. Its main purpose is to improve the utilization rate of the battery and prevent the battery from being overcharged and over-discharged. It can be used in electric vehicles, battery cars, robots, drones, etc. During the battery charging and discharging process, the terminal voltage and temperature, charging and discharging current and total voltage of the battery pack of each battery in the electric vehicle battery pack are collected in real time to prevent the battery from being overcharged or over-discharged. At the same time, the battery status can be given in time, the problematic batteries can be selected, the reliability and efficiency of the entire battery group can be maintained, and the implementation of the remaining power estimation model can be made possible. However, the cooling system of the battery management of electric vehicles is a branch of this large system. At present, the cooling system for this branch generally adopts liquid cooling, but the traditional liquid cooling method consumes too much energy, and the heat dissipation method is single, which is not conducive to the small volume heat dissipation mode. Summary of the invention

[0003] The object of the present invention is to provide a cooling system for battery management of an electric vehicle.

[0004] The present invention solves the above-mentioned technical problems by adopting the following technical solutions: a cooling system for battery management of an electric vehicle, which mainly comprises: a fairing, an air slot adjustment cylinder, a slot, a heat sink, a sleeve ring, a cold storage source cylinder, a liquid inlet, a liquid discharge port, a threaded groove, a valve core, a screw member, a tail end heat sink ring, a top end heat sink ring, a cold source return cylinder, a liquid discharge hole, a sealing cover, a nut ring, a screw, a stepping motor, a base, a screw cylinder, and an air intake grille. The tail end heat sink ring and the top end heat sink ring are both provided with a slot; a heat sink is fixed between the tail end heat sink ring and the top end heat sink ring through the slot; a plurality of heat sinks arranged in a ring around the cylinder constitute a heat sink cylinder;

[0005] The side wall of the wind duct regulating cylinder is provided with slots at equal intervals, and a heat sink is inserted into each of the slots; the number of the heat sinks in the heat dissipation cylinder is the same as the number of the slots;

[0006] A cold storage source cylinder is placed inside the heat dissipation cylinder. The cold storage source cylinder is hollow and has a thread groove milled on the inner wall. The thread of the thread groove runs obliquely upward. A cold source return cylinder is placed inside the cold storage source cylinder. A drainage hole is opened at the middle and lower part of the cold source return cylinder.

[0007] A screw is screwed into the top of the valve core, a liquid inlet is opened in the bottom inner core, and a liquid discharge port is opened on the outer wall; a sleeve ring is bound around the liquid discharge port; the top of the cold source return tube is connected to the liquid inlet; an annular cylindrical space is formed between the outer wall of the cold storage source tube and the inner wall of the cold source return tube, and the top of the annular cylindrical space is connected to the liquid discharge port; the cold storage source tube and the bottom of the cold source return tube are fixed and limited by a sealing cover, and the position of the drain hole is above the sealing cover;

[0008] A nut ring is welded on the side wall of the tail end of the wind trough adjustment cylinder, the stepping motor is fixed on the base, the rotor end of the stepping motor is connected to the screw, and the top of the screw is screwed into the nut ring; screw cylinders are arranged at equal intervals on the base, and screw members are screwed into the screw cylinders;

[0009] The fairing, the wind slot regulating cylinder, the heat sink, the cold storage source cylinder, the valve core, the cold source return cylinder, and the stepper motor core components constitute a single heat dissipation module; a plurality of the single heat dissipation modules are fixed on the base to form a heat dissipation module system frame, and the front end of the heat dissipation module system frame is placed on the air intake grille at the front end of the car;

[0010] The monomer heat dissipation module is connected to the heat source lead-out member of the battery pack monomer of the electric vehicle; and each of the monomer heat dissipation modules corresponds to each of the battery pack monomers of the electric vehicle;

[0011] Each of the monomer heat dissipation modules is provided with a liquid inlet and a liquid outlet, and a separate diaphragm pump is connected in series in the cooling circuit system formed between each of the liquid inlet and the liquid outlet;

[0012] Each of the stepper motor control circuits and each of the diaphragm pump control circuits are controlled by the automobile cooling system chip assembly.

[0013] Furthermore, the heat sink is composed of 12-28 heat sinks.

[0014] Furthermore, a fairing is sleeved on the outer wall of the top heat sink ring.

[0015] Furthermore, the heat dissipation module system architecture is composed of 16-38 single heat dissipation modules.

[0016] Furthermore, the automobile cooling system chip assembly is connected to a temperature sensor of an automobile battery pack.

[0017] Furthermore, the spacing between the individual heat dissipation modules is between 3 and 8 centimeters.

[0018] Furthermore, the stroke range of the screw is 5-12 cm.

[0019] Furthermore, a cold source liquid filling port is provided at the bottom of the cold source reflux cylinder.

[0020] The beneficial effects of the present invention are as follows: a single heat dissipation module is formed by using a fairing, an air trough adjustment cylinder, a heat sink, a cold storage source cylinder, a valve core, a cold source return cylinder, and a stepper motor core component; a plurality of single heat dissipation modules are fixed on a base platform to form a heat dissipation module system framework, and the front end of the heat dissipation module system framework is placed on the air intake grille at the front end of the car, thereby realizing the manufacture of a cooling system for battery management of an electric vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is an overall structural diagram of a cooling system for battery management of an electric vehicle according to the present invention.

[0022] Figure 2 This is a structural diagram of a battery management cooling system for an electric vehicle without the wind trough regulating cylinder as a whole.

[0023] Figure 3 This is a diagram of the overall inner core structure of a cooling system for battery management of an electric vehicle according to the present invention.

[0024] Figure 4 This is a structural diagram of a heat sink for a cooling system for battery management of an electric vehicle according to the present invention.

[0025] Figure 5 This is a structural diagram of an air duct regulating cylinder of a cooling system for battery management of an electric vehicle according to the present invention.

[0026] Figure 6 The present invention is a schematic diagram of the overall structure of a cooling system for battery management of an electric vehicle.

[0027] Figure 7 This is an overall principle diagram of cold source return of a cooling system for battery management of an electric vehicle according to the present invention.

[0028] Figure 8 This is a schematic diagram of a cold source reflux explosion of a cooling system for battery management of an electric vehicle according to the present invention.

[0029] In the figure, 1- fairing, 2- wind slot adjustment cylinder, 21- slot, 3- heat sink, 4- sleeve ring, 5- cold storage source cylinder, 51- liquid inlet, 52- discharge port, 53- threaded groove, 6- valve core, 61- screw member, 7- tail end heat sink ring, 8- top end heat sink ring, 9- cold source reflux cylinder, 91- drainage hole, 10- sealing cover, 11- nut ring, 12- screw, 13- stepping motor, 14- base, 141- screw cylinder, 15- air intake grille. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-8A detailed description is given of the specific implementation modes of the present invention.

[0031] Embodiment: A cooling system for battery management of an electric vehicle, which mainly comprises: a fairing 1, an air slot adjustment cylinder 2, a slot 21, a heat sink 3, a barge ring 4, a cold storage source cylinder 5, a liquid inlet 51, a liquid discharge port 52, a threaded groove 53, a valve core 6, a screw member 61, a tail end heat sink ring 7, a top heat sink ring 8, a cold source return cylinder 9, a liquid drain hole 91, a sealing cover 10, a nut ring 11, a screw 12, a stepping motor 13, a base 14, a screw cylinder 141, and an air intake grille 15. The tail end heat sink ring 7 and the top heat sink ring 8 are both provided with a slot; a heat sink 3 is fixed between the tail end heat sink ring 7 and the top heat sink ring 8 through the slot; a plurality of heat sinks 3 arranged in a ring form a heat sink cylinder;

[0032] The side wall of the wind duct regulating cylinder 2 is provided with slots 21 at equal intervals, and a heat sink 3 is inserted into each of the slots 21; the number of the heat sink 3 of the heat sink cylinder is the same as the number of the slots 21;

[0033] A cold storage source cylinder 5 is inserted into the heat dissipation cylinder. The cold storage source cylinder 5 is hollow and has a thread groove 53 milled on the inner wall. The thread of the thread groove 53 is inclined upward. A cold source return cylinder 9 is inserted into the cold storage source cylinder 5. A drain hole 91 is opened at the middle and lower part of the cold source return cylinder 9.

[0034] A screw member 61 is screwed into the top of the valve core 6, a liquid inlet 51 is opened in the bottom inner core, and a liquid discharge port 52 is opened on the outer wall; a sleeve ring 4 is bound around the liquid discharge port 52; the top of the cold source reflux cylinder 9 is connected with the liquid inlet 51; an annular cylindrical space is formed between the outer wall of the cold storage source cylinder 5 and the inner wall of the cold source reflux cylinder 9, and the top of the annular cylindrical space is connected with the liquid discharge port 52; the cold storage source cylinder 5 and the bottom of the cold source reflux cylinder 9 are fixed and limited by the sealing cover 10, and the position of the drain hole 91 is above the sealing cover 10;

[0035] A nut ring 11 is welded on the side wall of the tail end of the wind trough regulating cylinder 2, and the stepping motor 13 is fixed on the base 14. The rotor end of the stepping motor 13 is connected to the screw 12, and the top of the screw 12 is screwed into the nut ring 11; screw cylinders 141 are arranged at equal intervals on the base 14, and a screw member 61 is screwed into the screw cylinder 141;

[0036] The core components of the fairing 1, the wind slot adjustment cylinder 2, the heat sink 3, the cold storage source cylinder 5, the valve core 6, the cold source return cylinder 9, and the stepper motor 13 constitute a single heat dissipation module; a plurality of the single heat dissipation modules are fixed on the base 14 to form a heat dissipation module system frame, and the front end of the heat dissipation module system frame is placed on the air intake grille 15 at the front end of the car;

[0037] The monomer heat dissipation module is connected to the heat source lead-out member of the battery pack monomer of the electric vehicle; and each of the monomer heat dissipation modules corresponds to each of the battery pack monomers of the electric vehicle;

[0038] Each of the monomer cooling modules is provided with a liquid inlet 51 and a liquid outlet 52, and a separate diaphragm pump is connected in series in the cooling circuit system formed between each of the liquid inlet 51 and the liquid outlet 52;

[0039] Each control circuit of the stepper motor 13 and each control circuit of the diaphragm pump are controlled by the automobile cooling system chip assembly.

[0040] The heat dissipation tube is composed of 12 to 28 heat dissipation fins 3.

[0041] The outer wall of the top heat sink ring 8 is sleeved with a fairing 1.

[0042] The heat dissipation module system architecture is composed of 16-38 single heat dissipation modules.

[0043] The automobile cooling system chip assembly is connected to the temperature sensor of the automobile battery pack.

[0044] The distance between the monomer heat dissipation modules is between 3 and 8 centimeters.

[0045] The stroke range of the screw rod 12 is 5-12 cm.

[0046] A cold source liquid filling port is provided at the bottom of the cold source reflux cylinder 9.

[0047] The core of the present invention is that the single-cell heat dissipation module corresponds to each battery pack single cell of the electric vehicle. The design of this case is to perform single-cell corresponding heat dissipation treatment for battery packs in different areas, that is, the battery single-cell system corresponds to the heat dissipation system.

[0048] The design of the battery pack cooling system in this case fully considers the characteristics of automotive lithium batteries, that is, the need to maintain a constant temperature, generally between 25-35 degrees Celsius, so excessive or poor battery heat dissipation will have an adverse effect on battery performance.

[0049] The cooling system of this case also adopts the background technology of liquid cooling, which is different from the traditional liquid cooling technology in that its heat dissipation is controllable: in the design, the hot liquid generated by the battery system is poured into the cold source return tube 9 from the liquid inlet 51, and then flows from the drain hole 91 of the cold source return tube 9 to the outer wall of the cavity formed by the cold storage source tube 5 and the cold source return tube 9, and finally flows out from the drain port 52;

[0050] In the above cycle, since the outer wall of the cold storage source tube 5 is tightly attached to the heat dissipation tube formed by multiple heat sinks 3 arranged in a ring, its heat can be transferred out; and a threaded groove 53 is provided on the inside of the cold storage source tube 5, and the threaded groove 53 is inclined upward, so the refluxed liquid can form a vortex flow to ensure the uniform dissipation of the heat source.

[0051] Since the front end of the heat dissipation module system frame is placed on the air intake grille 15 at the front end of the car, when the vehicle is moving, external air flow will be brought into it, and the external air flow will flow through the heat sink 3 to take away the heat; when the signal of the temperature sensor of the car battery pack feedbacks that the battery pack is at an excessively high operating temperature, the car heat dissipation system chip assembly will send a command to the stepper motor 13, and the stepper motor 13 rotates the drive screw 12 to twist, so that the wind trough adjustment tube 2 is pulled out downward. Due to the withdrawal of the wind trough adjustment tube 2, the area of ​​the heat dissipation tube formed by the heat sink 3 exposed to the outside world increases, and its heat dissipation performance is also enhanced, so that the heat can be quickly reduced; conversely, the wind trough adjustment tube 2 is drawn into the heat dissipation tube formed by the heat sink 3 to reduce the area of ​​the heat dissipation tube exposed to the outside world.

[0052] This case did not apply for the electronic control system and circuit parts. This case mainly applied for the mechanical parts of the heat dissipation system. Therefore, based on the above description, the application for protection is made.

Claims

1. A cooling system for battery management of an electric vehicle, the main structure of which comprises: a fairing (1), an air slot adjustment cylinder (2), a slot (21), a heat sink (3), a sleeve ring (4), a cold storage source cylinder (5), a liquid inlet (51), a liquid discharge port (52), a threaded groove (53), a valve core (6), a screw member (61), a tail end heat sink collar (7), a top end heat sink collar (8), a cold source return cylinder (9), a liquid drain hole (91), a sealing cover (10), a nut ring (11), a screw (12), a stepping motor (13), a base (14), a screw cylinder (141), and an air intake grille (15), wherein: The tail end heat sink ring (7) and the top end heat sink ring (8) are both provided with a fin slot; a heat sink (3) is fixed between the tail end heat sink ring (7) and the top end heat sink ring (8) via the fin slot; a plurality of heat sinks (3) arranged around a circle form a heat sink tube; The side wall of the wind duct regulating cylinder (2) is provided with slots (21) at equal intervals around the circumference, and a heat sink (3) is inserted into each of the slots (21); the number of the heat sinks (3) of the heat sink cylinder is the same as the number of the slots (21); A cold storage source cylinder (5) is inserted into the heat dissipation cylinder. The cold storage source cylinder (5) is hollow and has a thread groove (53) milled on the inner wall. The thread of the thread groove (53) runs obliquely upward. A cold source return cylinder (9) is inserted into the cold storage source cylinder (5). A drainage hole (91) is opened at the middle and lower part of the cold source return cylinder (9). A screw member (61) is screwed into the top of the valve core (6), a liquid inlet (51) is formed in the bottom inner core, and a liquid discharge port (52) is formed in the outer wall; a sleeve ring (4) is bound around the outer periphery of the liquid discharge port (52); the top of the cold source return tube (9) is connected to the liquid inlet (51); an annular cylindrical space is formed between the inner wall of the cold storage source tube (5) and the outer wall of the cold source return tube (9), and the top of the annular cylindrical space is connected to the liquid discharge port (52); the cold storage source tube (5) and the bottom of the cold source return tube (9) are inserted into each other through a sealing cover (10) to be fixed and limited, and the position of the liquid discharge hole (91) is above the sealing cover (10); A nut ring (11) is welded on the side wall of the tail end of the wind trough adjustment cylinder (2); the stepping motor (13) is fixed on the base (14); the rotor end of the stepping motor (13) is connected to the screw rod (12), and the top end of the screw rod (12) is screwed into the nut ring (11); screw rod cylinders (141) are arranged at equal intervals on the base (14), and screw rod members (61) are screwed into the screw rod cylinders (141); The fairing (1), the wind slot regulating cylinder (2), the heat sink (3), the cold storage source cylinder (5), the valve core (6), the cold source return cylinder (9), and the stepping motor (13) are core components to form a single heat dissipation module; a plurality of the single heat dissipation modules are fixed on a base (14) to form a heat dissipation module system frame, and the front end of the heat dissipation module system frame is placed on the air intake grille (15) at the front end of the automobile; The monomer heat dissipation module is connected to the heat source lead-out member of the battery pack monomer of the electric vehicle; and each of the monomer heat dissipation modules corresponds to each of the battery pack monomers of the electric vehicle; Each of the single heat dissipation modules is provided with a liquid inlet (51) and a liquid outlet (52), and a separate diaphragm pump is connected in series in the cooling circuit system formed between each of the liquid inlet (51) and the liquid outlet (52); Each control circuit of the stepper motor (13) and each control circuit of the diaphragm pump are controlled by the automotive cooling system chip assembly; The heat dissipation tube is composed of 12 to 28 heat dissipation fins (3); a fairing (1) is sleeved on the outer wall of the top heat dissipation fin collar (8); and the heat dissipation module system framework is composed of 16 to 38 single heat dissipation modules; The wind slot regulating cylinder (2) is sleeved on the outside of the tail end heat sink ring (7).

2. The cooling system for battery management of an electric vehicle according to claim 1, characterized in that The automobile cooling system chip assembly is connected to the temperature sensor of the automobile battery pack.

3. The cooling system for battery management of an electric vehicle according to claim 1, characterized in that The distance between the monomer heat dissipation modules is between 3 and 8 centimeters.

4. The cooling system for battery management of an electric vehicle according to claim 1, characterized in that The stroke range of the screw (12) is 5-12 cm.

5. The cooling system for battery management of an electric vehicle according to claim 1, characterized in that A cold source liquid filling port is provided at the bottom of the cold source reflux cylinder (9).

Images