CN116190852B - A new energy efficient cooling battery box - Google Patents

Abstract

A new energy high-efficiency heat dissipation battery box belongs to the technical field of new energy battery boxes. In order to solve the problem that the existing air-cooled heat dissipation effect is poor and the heat dissipation is uneven, which further affects the service life and discharge power of the battery; the present invention sets two When one group of negative pressure fans is turned on, it can avoid the phenomenon that the battery does not heat up seriously in winter, resulting in redundant heat dissipation. When the negative pressure fans of the two groups jointly dissipate heat, the heat dissipation effect is good. The wind keeps the inside of the main air duct in a negative pressure state, and under the limit action of the air intake baffle and the baffle rod, the uniformity of heat dissipation is ensured. The first air duct and the second air duct are wrapped around the periphery of the battery, which can Evenly dissipate heat for the battery, increase the heat dissipation area, shorten the heat dissipation distance, and avoid gradient changes in the temperature of the battery. The zigzag distributed battery is not only convenient for series connection, but also improves the heat dissipation air duct.

Description

A new energy efficient cooling battery box

technical field

The invention relates to the technical field of new energy battery boxes, in particular to a new energy efficient heat dissipation battery box.

Background technique

With the rapid development of new energy vehicles and electric energy storage industries, in order to ensure that the battery system can maintain a better operating state and a relatively long service life in various environments, the temperature management of the battery is particularly important. The heat dissipation scheme of the battery is divided into air-cooled heat dissipation and liquid-cooled heat dissipation. Due to the high cost and late development of liquid-cooled heat dissipation technology, air-cooled heat dissipation technology is more commonly used.

At present, the conventional air-cooled heat dissipation generally dissipates heat through the heat conduction plate and the air duct installed inside the heat conduction plate, while the traditional battery box generally has two sets of heat conduction plates on the upper and bottom of the battery, and the ideal operating temperature of the battery is 20° C-40°C, and the temperature difference inside the battery is less than 5°C. The traditional heat dissipation structure is not effective especially in summer, especially when the discharge rate is high, and it will cause redundant heat dissipation in winter. And because the height of the battery is large, the existing heat dissipation structure will cause the battery to have a temperature gradient distributed from the middle to both ends, that is, the temperature in the middle is too high, which will greatly affect the charging and discharging efficiency of the battery, and will also limit the battery. discharge power.

In order to solve the above problems. For this reason, a new energy efficient heat dissipation battery box is proposed.

Contents of the invention

The purpose of the present invention is to provide a new energy efficient heat dissipation battery box, which solves the problem of poor heat dissipation and uneven heat dissipation in the existing air-cooled heat dissipation in the background technology, which further affects the service life and discharge power of the battery.

In order to achieve the above object, the present invention provides the following technical solutions: a new energy efficient heat dissipation battery box, including an outer box and a battery arranged inside the outer box, and also includes a heat dissipation assembly arranged between the outer box and the battery, the heat dissipation assembly includes a fixed The outer heat conduction frame inside the outer box, the outer heat conduction frame is wrapped around the periphery of the battery, and the cooling assembly also includes an inner heat conduction frame fixedly arranged inside the outer heat conduction frame, the outer heat conduction frame and the inner heat conduction frame are used for installing and conducting heat on the battery;

The middle part of the inner heat conduction frame is provided with a main air duct that runs through the front and back. The inside of the inner heat conduction frame is evenly distributed with the first air duct, and the inside of the outer heat conduction frame is evenly distributed with the second air duct. The main air duct, the first air duct The internal ventilation of the main air duct and the second air duct is used to dissipate heat from the battery, and negative pressure fans corresponding to the two ends of the main air duct are arranged on both sides of the outer box.

Further, the upper, lower and both sides of the outer box are provided with cooling ports, the front end of the outer box is provided with a temperature sensing module and a temperature management module, and the inner array of the outer box is distributed with temperature sensors, and the temperature sensor and the temperature sensing module are electrically connected to each other. connect.

Furthermore, the outer heat conduction frame and the inner heat conduction frame are components made of copper, wherein the outer heat conduction frame is made by the lost foam casting process, and the inner heat conduction frame can be divided into upper and lower parts, and each part is formed by the lost foam casting process and passed Welded.

Further, the first air duct and the second air duct are provided with multiple layers, and each layer of the first air duct and the second air duct is provided with four groups, and one end of the first air duct is connected to the main air duct. One end of the second air duct communicates with the first air duct, and the other end of the second air duct corresponds to the heat dissipation port on the outer box.

Further, the batteries are provided with multiple layers, and each layer of batteries is provided with four groups, and the four groups of batteries are arranged end to end close to each other, and each layer of batteries is connected in series with batteries of other layers.

Further, partitions are evenly distributed on the outside of the inner heat conducting frame, and the partitions are used to separate the batteries, and interlocking grooves for accommodating the batteries are provided between adjacent two groups of partitions.

Further, an air intake control mechanism is provided inside the main air duct, and the air intake control mechanism is located at the connection between the main air duct and the first branch air duct.

Further, the air intake control mechanism includes a return spring fixedly connected to the inner heat conducting frame, the top of the return spring is fixedly connected with an air intake baffle, and the air intake baffle is attached to the inner wall of the main air duct and covers the first branch air. The air intake control mechanism also includes a baffle rod fixedly connected to the inner wall of the main air duct. The baffle rod is used to block the outside of the air intake baffle to control the distance between the air intake baffle and the main air duct. .

Further, an air duct opening and closing mechanism is provided on both sides inside the outer box. The air duct opening and closing mechanism includes a side plate fixedly connected to one end of the outer heat conducting frame. A mounting frame is installed in the middle of the outer side of the side plate, and the other end of the mounting frame extends Outside the outer box, the middle part of the installation frame is provided with a transversely penetrating inner cavity, and the inner cavity is connected with the main air duct, and the negative pressure fan is fixedly connected to the inner cavity near the outer position.

Further, the inside of the inner cavity is connected with a sealing plate through shaft rotation, and there are two groups of sealing plates, which are distributed up and down, and the inside of the inner cavity is fixedly connected with a retaining strip corresponding to the bottom side of the sealing plate.

Compared with prior art, the beneficial effect of the present invention is:

The invention provides a new energy high-efficiency heat dissipation battery box. By setting two sets of negative pressure fans, when one set is turned on, it can avoid the phenomenon that the battery does not heat up seriously in winter and cause redundant heat dissipation. The negative pressure fans of the two sets work together to dissipate heat. During the heat dissipation process, the negative pressure fan suction makes the interior of the main air duct in a negative pressure state, and under the limit action of the intake baffle and the baffle rod, the uniformity of heat dissipation is ensured. The branch air duct and the second air duct are wrapped around the periphery of the battery, which can evenly dissipate heat from the battery, increase the heat dissipation area, shorten the heat dissipation distance, and avoid gradient changes in the temperature of the battery. The cooling air duct has also been improved.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present invention;

Fig. 2 is the overall structure split diagram of the present invention;

Fig. 3 is an exploded view of the structure of the heat dissipation assembly of the present invention;

Fig. 4 is the structural representation of storage battery of the present invention;

Fig. 5 is a structural schematic diagram of the inner heat conducting frame of the present invention;

Fig. 6 is a cross-sectional view of the structure of the inner heat conducting frame of the present invention;

Fig. 7 is a heat dissipation state diagram of the outer heat conduction frame and the inner heat conduction frame of the present invention at a cross-sectional angle;

Fig. 8 is an exploded view of the structure of the air duct opening and closing mechanism of the present invention;

Fig. 9 is a working state diagram of the single-fan heat dissipation mode of the present invention;

Fig. 10 is a working state diagram of the dual-fan heat dissipation mode of the present invention;

Fig. 11 is a cross-sectional angle view of the outer heat conducting frame, the inner heat conducting frame and the battery of the present invention.

In the figure: 1. outer box; 11. heat dissipation port; 12. temperature sensing module; 13. temperature management module; 2. outer heat conducting frame; 3. inner heat conducting frame; , air intake control mechanism; 331, return spring; 332, intake baffle; 333, baffle rod; 4, main air duct; 5, first air duct; 6, second air duct; 7, storage battery; 8 , air duct opening and closing mechanism; 81, side plate; 82, mounting frame; 83, inner cavity; 831, sealing plate; 832, retaining bar; 9, negative pressure fan; 101, first cooling surface; 102, second cooling 103, the third cooling surface; 104, the fourth cooling surface; 105, the first cooling surface; 106, the second cooling surface.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In order to solve the technical problems that the existing air-cooled heat dissipation effect is poor and the heat dissipation is uneven, which further affects the service life and discharge power of the battery, as shown in Figure 1-Figure 11, the following optimal technical solutions are provided:

A new energy efficient heat dissipation battery box, including an outer box 1 and a battery 7 arranged inside the outer box 1, and a heat dissipation assembly arranged between the outer box 1 and the battery 7, and the upper, lower and both sides of the outer box 1 are provided with cooling ports 11. The front end of the outer box 1 is provided with a temperature sensing module 12 and a temperature management module 13. The inner array of the outer box 1 is distributed with temperature sensors, and the temperature sensors are electrically connected to the temperature sensing module 12. The outer heat conduction frame 2 inside the box 1, the outer heat conduction frame 2 is wrapped around the periphery of the battery 7, and the heat dissipation assembly also includes an inner heat conduction frame 3 fixedly arranged on the inner side of the outer heat conduction frame 2, the outer heat conduction frame 2 and the inner heat conduction frame 3 are used for cooling the battery 7 Installation and heat conduction, the outer heat conduction frame 2 and the inner heat conduction frame 3 are components made of copper, wherein the outer heat conduction frame 2 is made by the lost foam casting process, and the inner heat conduction frame 3 can be divided into upper and lower parts, and each part is passed through It is formed by welding after lost foam casting.

The inner heat conduction frame 3 is composed of four groups of radially distributed heat conduction plates, and the center of the heat conduction plates is surrounded by a square main air duct 4 for heat dissipation, and the inside of the inner heat conduction frame 3 is evenly distributed with a first air duct 5, The inside of the outer heat conducting frame 2 is evenly distributed with second air ducts 6, one end of each first air duct 5 communicates with the main air duct 4, and the other end of each first air duct 5 communicates with a second air duct 5. One end of the channel 6 is connected, and the outer heat conducting frame 2 is a rectangular member surrounded by four heat conducting plates, and each second branch air channel 6 extends from the inside of one heat conducting plate of the outer heat conducting frame 2 to another heat conducting plate adjacent to it. The inside of the plate forms each second branch air channel 6 with an L-shaped cross section, and the other end of each second branch air channel 6 runs through the outer wall of the outer heat conducting frame 2 .

As shown in Fig. 4-Fig. 7 and Fig. 11, the storage battery 7 is provided with multiple layers, and the storage battery 7 of each layer is provided with four groups, and the storage battery 7 of the four groups is arranged in a circle close to the end, and the arrangement of the storage battery 7 of each layer is The way is the back shape shown in Figure 4, and each layer of batteries 7 is connected in series with the batteries 7 of other layers. In Figure 11, the outer wall of the inner heat conducting frame 3 corresponds to the first air duct 5 as the second cooling surface 106, the inner wall of the outer heat conducting frame 2 corresponds to the second branch air channel 6 as the first cooling surface 105, and the battery 7 has a first heat dissipation surface 101, a second heat dissipation surface 102, a third heat dissipation surface 103 and a fourth heat dissipation surface for heat dissipation. The heat dissipation surface 104, wherein the first heat dissipation surface 101 and the second heat dissipation surface 102 of the battery 7 are respectively close to the second cooling surface 106 corresponding to different first air ducts 5, and the third heat dissipation surface 103 and the fourth heat dissipation surface 104 of the battery 7 Close to the corresponding first cooling surface 105 of the same second air duct 6, the first heat dissipation surface 101 of the battery 7 is adjacent to the second heat dissipation surface 102, the first heat dissipation surface 101 is opposite to the third heat dissipation surface 103, and the inner heat conducting frame The outside of 3 is evenly distributed with partitions 31, which are used to separate the batteries 7, and between the two adjacent groups of partitions 31 are provided with fitting grooves 32 for accommodating the batteries 7, and the batteries 7 distributed in a zigzag shape Installed between the outer heat conducting frame 2 and the inner heat conducting frame 3, the main air channel 4, the first branch air channel 5 and the second branch air channel 6 form a ventilation structure through the suction of the negative pressure fan 9, and the outer heat conducting frame 2 and the inner heat conducting frame After the heat conduction frame 3 conducts heat, as shown in Figure 7, the main air duct 4, the first air duct 5 and the second air duct 6 can dissipate heat from the four sides of the battery 7 during ventilation, and the heat dissipation is uniform and at the same time , good cooling effect.

The inside of the main air duct 4 is provided with an air intake control mechanism 33, and the air intake control mechanism 33 is located at the connection between the main air duct 4 and the first branch air duct 5. return spring 331, the top of the return spring 331 is fixedly connected with an air intake baffle 332, the air intake baffle 332 fits on the inner wall of the main air channel 4 and covers a port portion of the first branch air channel 5, the air intake control The mechanism 33 also includes a baffle rod 333 fixedly connected to the inner wall of the main air passage 4, the baffle rod 333 is used to block the outside of the air intake baffle 332, and controls the distance between the air intake baffle 332 and the main air passage 4, such as As shown in Fig. 6, when performing heat dissipation, the negative pressure fan 9 sucks air so that the inside of the main air duct 4 is in a negative pressure state, and makes the air intake baffle 332 leave the inner wall of the main air duct 4, thereby exposing the first air duct 5, the opening at one end, the air intake baffle 332 is blocked by the baffle rod 333 after leaving the inner wall of the main air duct 4, although the inside of the main air duct 4 can enter the air through the second branch air duct 6 and the first branch air duct 5 , but because the air intake baffle 332 is limited by the baffle rod 333, the interior of the main air duct 4 is still in a state of negative pressure, and when the cooling vent 11 is blocked, a certain group of the first air duct 5 and the second air duct 5 The air duct 6 cannot enter the air, thereby ensuring the uniformity of heat dissipation.

Referring to Fig. 6 to Fig. 10, the inner sides of the outer box 1 are provided with an air duct opening and closing mechanism 8, the air duct opening and closing mechanism 8 includes a side plate 81 fixedly connected to one end of the outer heat conducting frame 2, and the outer middle of the side plate 81 is installed Mounting frame 82, the other end of mounting frame 82 extends to the outside of outer box 1, and the middle part of mounting frame 82 is provided with the inner chamber 83 that runs through horizontally, and inner chamber 83 communicates with main air duct 4, and negative pressure fan 9 is fixedly connected The inside of the inner cavity 83 is close to the outer position. The inner cavity 83 is connected with a sealing plate 831 through the shaft rotation. The sealing plate 831 is provided with two groups, and is distributed up and down. The side bar 832 corresponding to one side, since the air duct opening and closing mechanism 8 and the negative pressure fan 9 are provided with two groups, when the temperature of the battery 7 is not too high, in order to avoid redundant heat dissipation, only one group of negative pressure fans can be activated. The pressure fan 9 carries out suction and heat dissipation. When only one group of negative pressure fans 9 were working, the sealing plate 831 inside one group of air duct opening and closing mechanism 8 was rotated and opened under the action of the negative pressure fan 9, and the other group of air ducts The sealing plate 831 inside the opening and closing mechanism 8 is in a closed state under the action of the retaining strip 832. At this time, the heat dissipation process is shown in Figure 9; The internal sealing plates 831 are all in the open state. At this time, the heat dissipation process is shown in Figure 10. Compared with the air outlet at one end, the air outlet at both ends not only has a larger air volume, but also avoids uneven temperature at both ends of the main air duct 4. situation.

Specifically, when the storage battery 7 is discharged, heat is generated, which is detected by the temperature sensors distributed in the array inside the outer box 1, and the temperature data is processed by the temperature management module 13 through the temperature sensing module 12. If the temperature rises slowly and the temperature exceeds When setting the threshold, start one of the negative pressure fans 9 to dissipate heat. If the temperature rises too fast and the temperature exceeds the threshold, start two groups of negative pressure fans 9 to jointly dissipate heat. One of the negative pressure fans 9 During the heat dissipation process, the sealing plate 831 inside the other group of air duct opening and closing mechanism 8 is in a closed state under the action of the retaining strip 832. At this time, the heat dissipation process is shown in Figure 9, thereby preventing the battery 7 from heating in winter. Not serious, the phenomenon of redundant heat dissipation is caused. When the two groups of negative pressure fans 9 jointly dissipate heat, the sealing plate 831 inside the air duct opening and closing mechanism 8 is in an open state. At this time, the heat dissipation process is shown in Figure 10. In the process of heat dissipation, the negative pressure fan 9 draws air so that the inside of the main air duct 4 is in a negative pressure state, and the air intake baffle 332 is separated from the inner wall of the main air duct 4, thereby exposing the opening at one end of the first branch air duct 5. At the same time, the inside of the main air channel 4 can enter the air through the second branch air channel 6 and the first branch air channel 5, while the intake baffle 332 is limited by the stop rod 333, and the inside of the main air channel 4 is still in a state of negative pressure. When the heat dissipation port 11 is blocked, the uniformity of heat dissipation can also be ensured. When the main air duct 4, the first air duct 5 and the second air duct 6 are ventilating, the first air duct 5 and the second air duct 6 The air duct 6 is wrapped around the periphery of the battery 7, which can evenly dissipate heat from the battery 7, increase the heat dissipation area, shorten the heat dissipation distance, and avoid gradient changes in the temperature of the battery 7. The zigzag distribution of the battery 7 is not only convenient for series connection, but also improves The cooling air duct is installed.

It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is a relationship between these entities or operations. There is no such actual relationship or order between them. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone familiar with the technical field within the technical scope disclosed in the present invention, according to the technical solution of the present invention Any equivalent replacement or change of the inventive concepts thereof shall fall within the protection scope of the present invention.

Claims (9)

1. The utility model provides a high-efficient heat dissipation battery box of new forms of energy, includes outer case (1) and sets up battery (7) inside outer case (1), still including setting up the radiator unit between outer case (1) and battery (7), its characterized in that: the heat dissipation assembly comprises an outer heat conduction frame (2) fixedly arranged in the outer box (1), the outer heat conduction frame (2) is wrapped on the periphery of the storage battery (7), the heat dissipation assembly further comprises an inner heat conduction frame (3) fixedly arranged on the inner side of the outer heat conduction frame (2), and the outer heat conduction frame (2) and the inner heat conduction frame (3) are used for installing and conducting heat to the storage battery (7);

the inner heat conducting frame (3) is composed of four groups of heat conducting plates which are distributed radially, a square main air channel (4) used for radiating heat is formed in the center of the periphery of the heat conducting plates, first branch air channels (5) are uniformly distributed in the inner heat conducting frame (3), second branch air channels (6) are uniformly distributed in the outer heat conducting frame (2), one end of each first branch air channel (5) is communicated with the main air channel (4), the other end of each first branch air channel (5) is communicated with one end of one second branch air channel (6), the outer heat conducting frame (2) is a rectangular member formed by the periphery of the four heat conducting plates, each second branch air channel (6) extends from the inside of one heat conducting plate of the outer heat conducting frame (2) to the inside of the other heat conducting plate adjacent to the inside of the other heat conducting plate, and accordingly each second branch air channel (6) with an L-shaped cross section is formed, and the other end of each second branch air channel (6) penetrates through the outer side wall of the outer heat conducting frame (2);

corresponding first branch wind channel (5) are second cooling face (106) on the outer wall of interior heat conduction frame (3), correspond second branch wind channel (6) and be first cooling face (105) on the inner wall of outer heat conduction frame (2), battery (7) are provided with the multilayer, and battery (7) of every layer are provided with four groups, four groups battery (7) be the encircle setting that the head and the tail is close to, and establish ties with battery (7) of other layers after every layer battery (7) are established ties, have on battery (7) and be used for radiating first cooling face (101), second cooling face (102), third cooling face (103) and fourth cooling face (104), wherein second cooling face (106) that the first cooling face (101) and the second cooling face (102) of battery (7) press close to respectively of different first branch wind channels (5), the second cooling face (105) that correspond of battery (7) and fourth cooling face (104) press close to same second cooling face (101), first cooling face (103) and second cooling face (102) that the second cooling face (103) and the second cooling face (102) that the second cooling face (102) are close to respectively.

2. The new energy efficient heat dissipation battery box as defined in claim 1, wherein: the upper and lower and both sides of outer case (1) are provided with thermovent (11), and the front end of outer case (1) is provided with temperature sensing module (12) and temperature management module (13), and the inside array of outer case (1) distributes there is temperature sensor, and temperature sensor and temperature sensing module (12) electric connection.

3. The new energy efficient heat dissipation battery box as defined in claim 2, wherein: the outer heat conducting frame (2) and the inner heat conducting frame (3) are members made of copper, wherein the outer heat conducting frame (2) is made through a lost foam casting process, the inner heat conducting frame (3) can be divided into an upper part and a lower part, and each part is formed by welding after being molded through lost foam casting.

4. The new energy efficient heat dissipation battery box as defined in claim 3, wherein: the first branch air duct (5) and the second branch air duct (6) are provided with a plurality of layers, the first branch air duct (5) and the second branch air duct (6) of each layer are provided with four groups, and the second branch air duct (6) corresponds to a heat radiation opening (11) on the outer box (1).

5. The new energy efficient heat dissipation battery box as defined in claim 1, wherein: the outside evenly distributed of interior heat conduction frame (3) has baffle (31), and baffle (31) are used for separating battery (7), are provided with between baffle (31) of two adjacent groups and are used for holding gomphosis groove (32) of battery (7).

6. The new energy efficient heat dissipation battery box as defined in claim 1, wherein: an air inlet control mechanism (33) is arranged in the main air duct (4), and the air inlet control mechanism (33) is positioned at the communication position of the main air duct (4) and the first branch air duct (5).

7. The new energy efficient heat dissipation battery box as defined in claim 6, wherein: the air inlet control mechanism (33) comprises a reset spring (331) fixedly connected to the inner heat conducting frame (3), an air inlet baffle (332) is fixedly connected to the top of the reset spring (331), the air inlet baffle (332) is attached to the inner wall of the main air duct (4) and covers an end opening part of the first branch air duct (5), the air inlet control mechanism (33) further comprises a stop lever (333) fixedly connected to the inner wall of the main air duct (4), and the stop lever (333) is used for stopping the outer side of the air inlet baffle (332) and controlling the interval between the air inlet baffle (332) and the main air duct (4).

8. The new energy efficient heat dissipation battery box as defined in claim 1, wherein: the inside both sides of outer case (1) are provided with wind channel mechanism (8) that opens and shuts, and wind channel mechanism (8) are including curb plate (81) of fixed connection in outer heat conduction frame (2) one end, install mounting bracket (82) in the middle of the outside of curb plate (81), and the other end of mounting bracket (82) extends to the outside of outer case (1), and the middle part of mounting bracket (82) is equipped with inner chamber (83) that transversely run through, and inner chamber (83) are linked together with main wind channel (4), and negative pressure fan (9) fixed connection is in the inside position that is close to the outside of inner chamber (83).

9. The new energy efficient heat dissipation battery box as defined in claim 8, wherein: the inside of the inner cavity (83) is connected with a sealing plate (831) through shaft rotation, the sealing plate (831) is provided with two groups and is distributed up and down, and a barrier strip (832) corresponding to one side of the bottom of the sealing plate (831) is fixedly connected with the inside of the inner cavity (83).

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