Energy storage device

Abstract

The utility model relates to an energy storage device which comprises a fixing frame, battery bins, storage batteries and a cooling mechanism, the fixing frame is provided with the battery bins distributed in an array mode, the battery bins are sleeved with the storage batteries, the cooling mechanism comprises a heat management box, a pump body, a water inlet pipe, a water outlet pipe and a draught fan, and the pump body, the water inlet pipe, the water outlet pipe and the draught fan are arranged in the heat management box. The water inlet pipe and the water outlet pipe extend to the two sides of the battery bin respectively, and the battery bin is provided with a liquid inlet and a liquid outlet which are used for connecting the water inlet pipe and the water outlet pipe. The battery compartment is connected with the heat management box through the water inlet pipe and the water outlet pipe to form an internal circulation liquid cooling system, heat exchange of cooling liquid between the battery compartment and the heat management box is achieved through the effect of the pump body, liquid cooling temperature control is adopted for a storage battery part, and air cooling temperature control is conducted on a pipeline through the draught fan in the compartment. Therefore, the equipment exerts the best energy efficiency, and the service life of the storage battery is prevented from being influenced by over-high temperature.

Description

Technical Field

[0001] The utility model relates to the technical field of electric energy storage, in particular to an energy storage device. Background Art

[0002] Lithium iron phosphate batteries have the advantages of high operating voltage, high energy density, long cycle life, good safety performance, low self-discharge rate, and no memory effect. They are indispensable energy storage carriers for mobile energy storage power supply vehicles used for emergency rescue, power protection, and power supply. However, in order to save storage space in the car, batteries are often placed and managed in a centralized manner, which also leads to excessive density of high-current batteries, which are prone to high temperatures and exceed the normal operating temperature of the battery, resulting in reduced battery capacity, shortened battery life, and safety hazards. Summary of the invention

[0003] In order to overcome the shortcomings of the background technology, the technical solution adopted by the utility model is: an energy storage device, including a fixing frame, a battery compartment, a battery and a cooling mechanism, the fixing frame is provided with battery compartments distributed in an array, the battery compartment is provided with batteries, the cooling mechanism includes a thermal management box, and a pump body, a water inlet pipe, a water outlet pipe and a fan arranged in the thermal management box, the two ends of the pump body are respectively connected to the water inlet pipe and the water outlet pipe, and the water inlet pipe and the water outlet pipe extend to the two sides of the battery compartment respectively, and the battery compartment is provided with a liquid inlet and a liquid outlet for connecting the water inlet pipe and the water outlet pipe.

[0004] By adopting the above technical scheme, the utility model is used in a mobile energy storage power supply vehicle. The battery compartment is connected to the thermal management box through a water inlet pipe and a water outlet pipe to form an internal circulation liquid cooling system. Through the action of the pump body, the coolant is heat exchanged between the battery compartment and the thermal management box. Since the outer shell of the battery is close to the battery compartment, the battery part is temperature-controlled by liquid cooling, and the interior of the car is temperature-controlled by pipe air cooling using a fan, so that the equipment can achieve the best energy efficiency and avoid affecting the service life of the battery due to excessive temperature.

[0005] The utility model is further configured such that the fixing frame includes an outer frame and a partition arranged on the outer frame, and an installation groove for installing the battery compartment is formed between adjacent partitions, one end of the water inlet pipe / water outlet pipe is connected to the pump body, and the other end extends to the upper and lower sides of the partition.

[0006] Furthermore, the water inlet pipe / water outlet pipe is provided with a branch pipe perpendicular to the ground, and the branch pipe is provided with a joint corresponding to the liquid inlet / liquid outlet.

[0007] Furthermore, the partition is fixedly connected with five groups of battery compartments, and the branch pipe is provided with five groups of connectors corresponding to the liquid inlet / outlet.

[0008] By adopting the above technical solution, the battery compartment is connected to the partition by screw threads, so that the battery compartment is distributed on the fixing frame in 3x5, and the branches of the water inlet pipe and the water outlet pipe are staggered with each other, so that it has 15 pairs of connectors with the same number of battery compartments, so that each battery compartment has coolant circulation, thereby improving the heat exchange efficiency of the battery.

[0009] The utility model is further configured that a shock absorbing base is provided at the bottom of the fixing frame.

[0010] By adopting the above technical solution, the cooling mechanism is fixed on the vehicle, and the fixing frame is connected to the vehicle via a shock-absorbing base. Since the liquid inlet / outlet and the interface are connected via a hose, the influence of vehicle body vibration on the cooling system is reduced.

[0011] The utility model is further configured such that the water inlet pipe and the water outlet pipe are distributed in an S shape in the thermal management box, and the fans are symmetrically distributed on both sides of the thermal management box.

[0012] By adopting the above technical solution, the water inlet pipe and the water outlet pipe increase their heat dissipation area through S-shaped distribution, and the rotation directions of the fans on both sides are opposite, so that the external air flows in one direction, thereby improving the heat dissipation effect.

[0013] The utility model is further configured such that the battery compartment is provided with an inner cavity for installing the battery, and the battery compartment is provided with a flow channel for cooling the battery around the inner cavity, and the two ends of the flow channel are respectively connected to the liquid inlet and the liquid outlet.

[0014] Using the above technical solution, the battery is composed of LFP 228Ah lithium iron phosphate cells, and the total power of the supporting BMS is 528kWh. The coolant enters from the liquid inlet, circulates through the flow channel and out of the liquid outlet. The battery compartment is made of aluminum metal as a whole to improve the heat dissipation effect of the battery.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The battery compartment is connected to the thermal management box through the water inlet and outlet pipes to form an internal circulation liquid cooling system. The pump body allows the coolant to exchange heat between the battery compartment and the thermal management box. Since the battery casing is close to the battery compartment, the battery part is temperature-controlled by liquid cooling, while the interior of the car uses a fan to control the temperature of the pipe air cooling, so that the equipment can achieve optimal energy efficiency and avoid affecting the battery service life due to excessive temperature.

[0017] The embodiments of the utility model are further described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the general assembly diagram of the utility model;

[0019] Figure 2 A three-dimensional diagram of the battery part of the utility model;

[0020] Figure 3 A three-dimensional diagram of the cooling mechanism of the utility model;

[0021] Figure 4 It is a structural schematic diagram of the thermal management box of the utility model;

[0022] Figure 5 It is a cross-sectional view of the battery compartment of the utility model;

[0023] Figure 6 It is a plan view of the utility model installed on a mobile energy storage power supply vehicle;

[0024] Among them: 1-fixed frame, 2-battery compartment, 3-battery, 4-cooling mechanism, 5-thermal management box, 6-pump body, 7-water inlet pipe, 8-water outlet pipe, 9-fan, 11-liquid inlet, 12-liquid outlet, 13-outer frame, 14-partition, 15-installation groove, 16-branch pipe, 17-joint, 18-shock-absorbing base, 19-inner cavity, 20-flow channel; DETAILED DESCRIPTION

[0025] like Figure 1 , 2 As shown in Figure 3, this embodiment provides an energy storage device, including a fixing frame 1, a battery compartment 2, a battery 3 and a cooling mechanism 4. The fixing frame 1 is provided with battery compartments 2 distributed in an array, and the battery compartments 2 are provided with batteries 3. The cooling mechanism 4 includes a thermal management box 5, and a pump body 6, a water inlet pipe 7, a water outlet pipe 8 and a fan 9 arranged in the thermal management box 5. The two ends of the pump body 6 are respectively connected to the water inlet pipe 7 and the water outlet pipe 8, and the water inlet pipe 7 and the water outlet pipe 8 extend to the two sides of the battery compartment 2 respectively, and the battery compartment 2 is provided with a liquid inlet 11 and a liquid outlet 12 for connecting the water inlet pipe 7 and the water outlet pipe 8.

[0026] In this embodiment, the fixing frame 1 includes an outer frame 13 and a partition 14 arranged on the outer frame 13. An installation groove 15 for installing the battery compartment 2 is formed between adjacent partitions 14. One end of the water inlet pipe 7 / water outlet pipe 8 is connected to the pump body 6, and the other end extends to the upper and lower sides of the partition 14. The water inlet pipe 7 / water outlet pipe 8 is provided with a branch pipe 16 perpendicular to the ground. The branch pipe 16 is provided with a joint 17 corresponding to the liquid inlet 11 / liquid outlet 12. The partition 14 is fixedly connected with five groups of battery compartments 2. The branch pipe 16 is provided with five groups of joints 17 corresponding to the liquid inlet 11 / liquid outlet 12. The battery compartment 2 is connected to the partition 14 by screw threads, so that the battery compartment 2 is distributed in 3x5 on the fixing frame 1. The branches 16 of the water inlet pipe 7 and the water outlet pipe 8 are staggered with each other, so that it has 15 pairs of joints 17 with the same number as the battery compartment 2, so that each battery compartment 2 has coolant circulation, thereby improving the heat exchange efficiency of the battery 3.

[0027] In this embodiment, a shock-absorbing base 18 is provided at the bottom of the fixing frame 1, the cooling mechanism 4 is fixed on the vehicle, and the fixing frame 1 is connected to the vehicle through the shock-absorbing base 18. Since the liquid inlet 11 / liquid outlet 12 and the interface are connected by a hose, the influence of the vehicle body vibration on the cooling system is reduced. At the same time, the entire battery pack can be replaced through the outer frame 13, which is convenient for maintenance.

[0028] Combination Figure 4 As shown, in this embodiment, the water inlet pipe 7 and the water outlet pipe 8 are distributed in an S shape in the thermal management box 5 to increase its heat dissipation area. The fans 9 are symmetrically distributed on both sides of the thermal management box 5, and the rotation directions of the fans 9 on both sides are opposite, so that the external air flows in one direction to improve the heat dissipation effect.

[0029] Combination Figure 5 As shown, in this embodiment, the battery compartment 2 is provided with an inner cavity 19 for installing the battery 3, and the battery compartment 2 is provided with a flow channel 20 for cooling the battery 3 around the inner cavity 19, and the two ends of the flow channel 20 are respectively connected to the liquid inlet 11 and the liquid outlet 12. The battery 3 is a lithium iron phosphate battery cell with a model of LFP 228Ah, and the total power of the matching BMS is 528kWh. The coolant enters from the liquid inlet 11, circulates through the flow channel 20 and exits from the liquid outlet 12, and the battery compartment 2 is made of aluminum metal as a whole to improve the heat dissipation effect of the battery 3.

[0030] Combination Figure 6 As shown, the working principle of the utility model is that the utility model is installed on a mobile energy storage power supply vehicle, and the battery compartment 2 is connected to the thermal management box 5 through the water inlet pipe 7 and the water outlet pipe 8 to form an internal circulation liquid cooling system. Through the action of the pump body 6, the coolant is heat exchanged between the battery compartment 2 and the thermal management box 5. Since the shell of the battery 3 is in close contact with the battery compartment 2, the battery 3 is partially temperature-controlled by liquid cooling, and the interior of the car is temperature-controlled by pipe air cooling using a fan 9, so that the equipment can play the best energy efficiency and avoid affecting the service life of the battery 3 due to excessive temperature.

[0031] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An energy storage device, characterized in that: The invention comprises a fixing frame (1), a battery compartment (2), a storage battery (3) and a cooling mechanism (4); the fixing frame (1) is provided with battery compartments (2) distributed in an array; the battery compartment (2) is sleeved with the storage battery (3); the cooling mechanism (4) comprises a thermal management box (5), and a pump body (6), a water inlet pipe (7), a water outlet pipe (8) and a fan (9) arranged in the thermal management box (5); the two ends of the pump body (6) are respectively connected to the water inlet pipe (7) and the water outlet pipe (8); the water inlet pipe (7) and the water outlet pipe (8) respectively extend to the two sides of the battery compartment (2); and the battery compartment (2) is provided with a liquid inlet (11) and a liquid outlet (12) for connecting the water inlet pipe (7) and the water outlet pipe (8).

2. An energy storage device according to claim 1, characterized in that: The fixing frame (1) comprises an outer frame (13) and a partition (14) arranged on the outer frame (13); a mounting groove (15) for mounting the battery compartment (2) is formed between adjacent partitions (14); one end of the water inlet pipe (7) / water outlet pipe (8) is connected to the pump body (6), and the other end extends to the upper and lower sides of the partition (14).

3. An energy storage device according to claim 2, characterized in that: The water inlet pipe (7) / water outlet pipe (8) is provided with a branch pipe (16) perpendicular to the ground, and the branch pipe (16) is provided with a joint (17) corresponding to the liquid inlet (11) / liquid outlet (12).

4. An energy storage device according to claim 3, characterized in that: The partition plate (14) is fixedly connected to five groups of battery compartments (2), and the branch pipe (16) is provided with five groups of connectors (17) corresponding to the liquid inlet (11) / liquid outlet (12).

5. An energy storage device according to claim 4, characterized in that: A shock-absorbing base (18) is provided at the bottom of the fixing frame (1).

6. An energy storage device according to claim 1, characterized in that: The water inlet pipe (7) and the water outlet pipe (8) are distributed in an S shape inside the thermal management box (5), and the fans (9) are symmetrically distributed on both sides of the thermal management box (5).

7. An energy storage device according to claim 1, characterized in that: The battery compartment (2) is provided with an inner cavity (19) for installing the storage battery (3), and the battery compartment (2) is provided with a flow channel (20) for cooling the storage battery (3) around the inner cavity (19), and the two ends of the flow channel (20) are respectively connected to the liquid inlet (11) and the liquid outlet (12).

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