Air-cooled cylindrical battery box

Abstract

The utility model discloses an air-cooled cylindrical battery box which comprises a box body, a first partition plate is arranged in the box body and divides the box body into a left cavity and a right cavity, the bottoms of the left cavity and the right cavity are communicated, a battery cell module is arranged in the left cavity and comprises a battery support and a support base, and a plurality of cylindrical battery cells are fixed in the battery support. A ventilation gap is formed between the cylindrical battery cells, the bracket base is arranged below the battery bracket and is provided with a heat dissipation air duct communicated with the ventilation gap and the right cavity, a fan and a control module connected with the fan are arranged in the right cavity, an air inlet and an air outlet are respectively formed in the box body, the air inlet is communicated with the left cavity, and the air outlet is communicated with the right cavity. The air outlet is communicated with the right cavity, and the fan is connected with the air outlet. The battery box has the beneficial effects that gaps among the cylindrical battery cells are fully utilized, so that cold air flows along the axial direction of the cylindrical battery cells, the heat dissipation contact area is increased, and the heat dissipation effect is good.

Description

TECHNICAL FIELD

[0001] The utility model relates to cylindrical battery technical field, concretely relates to a kind of air-cooled cylindrical battery box. BACKGROUND

[0002] Battery box is a modular battery system comprising a plurality of battery cells, which are connected and assembled to form a whole structure. Cylindrical battery box has the prerequisite of automated production due to the mature commercialization and standardization of cylindrical battery cell. Moreover, cylindrical battery cell is small in size and very suitable for battery box structure with irregular space, which makes cylindrical battery box more and more concerned in the fields of energy storage, standby power supply and power battery.

[0003] During the process of charging and discharging, each battery cell generates heat, and the accumulation of heat in the battery box can cause the temperature in the battery box to rise, which seriously affects the safe and stable operation of the battery system. Therefore, it is necessary to cool the battery box quickly under high-power charging and discharging mode to ensure that the battery box is at an appropriate temperature. Currently, the air-cooled heat dissipation method of cylindrical battery box is only from the top or bottom of the battery box, which has poor heat dissipation effect, and some battery cells cannot even meet the heat dissipation requirements of high-power charging and discharging. When the battery is charged and discharged at high power, the overall temperature of the battery box rises, affecting the battery life, safety and overall energy efficiency. SUMMARY

[0004] The utility model aims at overcoming the defects of prior art, providing a kind of air-cooled cylindrical battery box, make full use of the gap between cylindrical battery cell, make cold air flow along the axial direction of cylindrical battery cell, increase the heat dissipation contact area, and the heat dissipation effect is good.

[0005] The utility model aims at overcoming the defects of prior art, providing a kind of air-cooled cylindrical battery box, make full use of the gap between cylindrical battery cell, make cold air flow along the axial direction of cylindrical battery cell, increase the heat dissipation contact area, and the heat dissipation effect is good.

[0006] In some embodiments, the air inlet is located above the battery cell module.

[0007] In some embodiments, the right cavity is further provided with a second partition plate, the second partition plate divides the right cavity into two layers of cavities, the control module is arranged in the upper layer cavity, the fan is arranged in the lower layer cavity, and the air outlet is communicated with the lower layer cavity.

[0008] In some embodiments, the first partition plate is an I-shaped partition plate or an L-shaped partition plate.

[0009] In some embodiments, when the first partition plate is an L-shaped partition plate, the first partition plate comprises a third partition plate and a fourth partition plate, the third partition plate is vertically arranged, and the fourth partition plate is arranged above the battery cell module.

[0010] In some embodiments, the fourth partition plate is horizontally arranged, or is arranged to be inclined downward from the left chamber to the right chamber, or is arranged to be stepped downward from the left chamber to the right chamber.

[0011] In some embodiments, the battery support comprises an upper support and a lower support, and the cylindrical battery cell is clamped between the upper support and the lower support.

[0012] In some embodiments, a communication connection interface is arranged outside the battery box, and the communication connection interface is connected with the control module.

[0013] In some embodiments, a power connection interface is arranged outside the battery box, and the power connection interface is connected with the battery cell module.

[0014] Compared with the prior art, the utility model has the advantages that: the utility model makes full use of the gap formed after the cylindrical battery cell is assembled, and makes the cold air flow along the axial direction of the cylindrical battery cell, so that the heat dissipation contact area is increased, more heat is taken away, and the heat dissipation effect is good.

[0015] The utility model will be described in detail below in combination with the drawings and specific embodiments. DRAWINGS

[0016] Figure 1 It is the structure explosion map of the utility model.

[0017] Figure 2 It is the internal structure schematic of the utility model Figure 1 .

[0018] Figure 3 It is the internal structure schematic of the utility model Figure 2 .

[0019] Figure 4 It is the structure schematic of the battery cell module.

[0020] Figure 5 It is the internal structure schematic of the utility model Figure 3 .

[0021] Figure 6 It is the internal structure schematic of the utility model Figure 4 .

[0022] Figure 7 is the internal structure diagram of the utility model Figure 5 .

[0023] Figure 8 is the structure diagram of lower support and support base.

[0024] Wherein, 1, box, 2, electric core module, 3, air inlet, 4, air outlet, 5, communication connection interface, 6, power connection interface, 7, upper support, 8, lower support, 9, cylindrical electric core, 10, support base, 11, heat dissipation air duct, 12, first baffle, 13, second baffle. DETAILED DESCRIPTION

[0025] As Figures 1 to 8 Indicated, a kind of air-cooled cylindrical battery box, including box 1, first baffle 12 is equipped in the box 1, first baffle 12 separates box 1 into left and right cavities of bottom communication, left cavity is equipped with electric core module 2, specifically, the length and width of left cavity match the length and width of electric core module 2, left cavity is used to accommodate electric core module 2 and position-limiting electric core module 2.Electric core module 2 includes battery support and support base 10, several cylindrical electric cores 9 are fixed in battery support, ventilation gap is formed between cylindrical electric core 9, support base 10 is located below battery support and support base 10 is equipped with heat dissipation air duct 11 that communicates ventilation gap and right cavity, fan and control module connected with fan are equipped in right cavity, air inlet 3 and air outlet 4 are respectively equipped on the box 1, air inlet 3 is communicated with left cavity, air outlet 4 is communicated with right cavity, fan is connected with air outlet 4.When battery charges and discharges, the temperature in battery box rises, control module starts fan, cold air enters battery box from air inlet 3, along the ventilation gap between cylindrical electric core 9 into the heat dissipation air duct 11 of support base 10, then enters right chamber and is discharged from air outlet 4 by fan.The present application makes full use of the gap formed after the assembly of cylindrical electric core 9, so that cold air flows along the axial direction of cylindrical electric core 9, increases the heat dissipation contact area, carries away more heat, and has good heat dissipation effect.

[0026] In some embodiments, the air inlet 3 is located above the electric core module 2.Preferrably, the air inlet 3 is located above the side of the electric core module 2, further preferably, the air inlet 3 is arranged on the wall surface of the left chamber opposite to the first baffle 12 and located above the electric core module 2.Cold air enters the battery box from above the electric core module 2, flows through the axial direction of cylindrical electric core 9, increases the contact area of cold air and cylindrical electric core 9, and improves the heat dissipation effect.

[0027] In some embodiments, the right cavity is further provided with a second partition 13, which divides the right cavity into upper and lower chambers. The control module is located in the upper chamber, the fan is located in the lower chamber, and the exhaust port 4 is connected to the lower chamber. The second partition 13 allows hot air flowing from the heat dissipation duct 11 of the left chamber support base 10 to be directly discharged from the lower chamber into the battery box, promoting the discharge of hot air, preventing it from entering the upper chamber, reducing heat accumulation in the right chamber, and minimizing the impact on the control module.

[0028] In some embodiments, the first partition 12 is an I-shaped partition or an L-shaped partition. When it is an I-shaped partition, the first partition 12 is vertically arranged, such as... Figure 5 As shown, the first partition 12 divides the housing 1 into a left chamber and a right chamber that are connected at the bottom.

[0029] When the partition is L-shaped, the first partition 12 includes a third partition and a fourth partition, the third partition being vertically arranged, and the fourth partition being located above the cell module 2. Figure 2 , 6 As shown in Figures 7 and 8, the first partition 12 divides the housing 1 into a left chamber and a right chamber that are connected at the bottom, and the top of the right chamber extends to the top of the entire battery box.

[0030] In some embodiments, such as Figure 2 As shown, the fourth partition is horizontally arranged, or, as... Figure 6 As shown, the fourth partition is inclined downwards from the left chamber to the right chamber, or, as... Figure 7 As shown, the fourth partition is stepped downwards from the left chamber to the right chamber. The downward tilt or stepping of the fourth partition from the left chamber to the right chamber ensures that the pressure difference between the ventilation gaps of different cylindrical cells 9 is basically consistent, ensuring the consistency of the amount of cold air flowing over the surface of different cylindrical cells 9, thereby ensuring the uniformity of the internal temperature of the battery box and better temperature consistency of the cylindrical cells 9.

[0031] In some embodiments, the battery bracket includes an upper bracket 7 and a lower bracket 8, with a cylindrical battery cell 9 sandwiched between the upper bracket 7 and the lower bracket 8.

[0032] In some embodiments, a communication connection interface 5 is provided on the outside of the battery box, and the communication connection interface 5 is connected to the control module.

[0033] In some embodiments, a power connection interface 6 is provided on the outside of the battery box, and the power connection interface 6 is connected to the battery cell module 2.

[0034] It should be noted that this disclosure does not specifically limit the structure of the battery holder and the holder base 10. For example, the battery holder can be integrally formed or assembled, and the holder base 10 can be integrated with the battery holder or set separately.Figure 8 As shown, the support base 10 is integrated on the lower support 8, and the lower support 8 is formed into an integral lower layer support by splicing.

[0035] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0036] In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0037] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication or interaction relationship of two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0038] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present specification and the features of different embodiments or examples without contradiction.

[0039] Although the above-mentioned embodiments have been shown and described, it is to be understood that the above-mentioned embodiments are exemplary and are not to be construed as limiting the present application, and the changes, modifications, replacements and variations made by those of ordinary skill in the art to the above-mentioned embodiments are within the protection scope of the present application.

Claims

1. A wind-cooled cylindrical battery box, comprising a box body, characterized in that: The housing is provided with a first partition, which divides the housing into left and right cavities connected at the bottom. The left cavity is provided with a battery cell module, which includes a battery bracket and a bracket base. Several cylindrical battery cells are fixed in the battery bracket, and ventilation gaps are formed between the cylindrical battery cells. The bracket base is located below the battery bracket and has a heat dissipation duct connecting the ventilation gaps and the right cavity. The right cavity is provided with a fan and a control module connected to the fan. The housing is provided with an air inlet and an air outlet. The air inlet is connected to the left cavity, and the air outlet is connected to the right cavity. The fan is connected to the air outlet.

2. The air-cooled cylindrical battery box according to claim 1, characterized in that: The air inlet is located above the battery cell module.

3. The air-cooled cylindrical battery box according to claim 1 or 2, characterized in that: The right cavity is also provided with a second partition, which divides the right cavity into upper and lower cavities. The control module is located in the upper cavity, the fan is located in the lower cavity, and the exhaust port is connected to the lower cavity.

4. The air-cooled cylindrical battery box according to claim 3, characterized in that: The first partition is an I-type partition or an L-type partition.

5. The air-cooled cylindrical battery box according to claim 4, characterized in that: When it is an L-shaped partition, the first partition includes a third partition and a fourth partition, the third partition is vertically arranged, and the fourth partition is located above the cell module.

6. The air-cooled cylindrical battery box according to claim 5, characterized in that: The fourth partition is arranged horizontally, or inclined downwards from the left chamber to the right chamber, or stepped downwards from the left chamber to the right chamber.

7. The air-cooled cylindrical battery box according to claim 1, characterized in that: The battery bracket includes an upper bracket and a lower bracket, with cylindrical battery cells sandwiched between the upper bracket and the lower bracket.

8. The air-cooled cylindrical battery box according to claim 1, characterized in that: The battery box is equipped with a communication connection interface on its outside, which is connected to the control module.

9. The air-cooled cylindrical battery box according to claim 1, characterized in that: The battery box is provided with a power connection interface on the outside, which is connected to the battery cell module.

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