Air-cooled battery pack for charging and storage equipment

Abstract

The utility model relates to the technical field of battery equipment, and particularly discloses an air-cooled battery pack for charging and storage equipment, the air-cooled battery pack comprises a cabinet body, the cabinet body comprises an air inlet plate and an air exhaust plate which are arranged in parallel in the transverse direction, an air-cooled assembly, a plurality of battery cells and a battery cell limiting assembly are arranged in the cabinet body, and the air-cooled assembly comprises an exhaust fan. The exhaust fan comprises an air inlet fan mounted close to the air inlet plate and an exhaust fan mounted close to the exhaust plate, and longitudinal cold air flow is formed when the air inlet fan and the exhaust fan are started; the battery cell limiting assembly comprises a limiting plate, a plurality of limiting strips are longitudinally arranged on the limiting plate, the limiting strips are evenly distributed at intervals in the transverse direction, the limiting plate is detachably connected with the cabinet body, and the battery cells are installed between the two limiting strips. The air-cooled battery pack aims at solving the problem that the heat dissipation effect in the battery pack is poor due to the fact that gaps between battery cells of an existing air-cooled battery pack are too small.

Description

Technical Field

[0001] The utility model relates to the technical field of battery equipment, in particular to an air-cooled battery pack for charging and storage equipment. Background Art

[0002] With the vigorous development of the new energy charging industry, green energy is getting closer and closer to people's lives, and charging and storage equipment has gradually entered the public's field of vision. As a key component of charging and storage equipment, the demand for battery packs is constantly expanding. Due to the high manufacturing cost of liquid-cooled battery packs, some battery packs still use air cooling to dissipate heat. At present, most of the air-cooled battery packs on the market are also designed with fans for air cooling and heat dissipation. However, since the battery packs basically follow the design of liquid-cooled battery packs, the battery packs are composed of several modules inside. The cells inside the modules are separated by insulating plates or insulating glue. The gaps between the cells inside the modules are too small. Although effective heat dissipation can be achieved when using liquid cooling, when using air cooling, due to the small gaps between the cells, the fan cold air is not easy to enter the gaps, or the amount of cold air entering is small, which makes it easy for the heat between the cells inside the module to accumulate, causing overheating in the module, which is easy to cause overheating damage to the cells inside the module. In extreme cases, it causes the battery to spontaneously combust, posing a threat to personal and property safety. Utility Model Content

[0003] In view of the deficiencies in the prior art, the technical problem solved by the present invention is to provide an air-cooled battery pack for charging and storage equipment, so as to solve the problem that the existing air-cooled battery pack has poor internal heat dissipation due to the small gap between the battery cells, which easily causes over-temperature damage inside the module and even battery spontaneous combustion in extreme cases.

[0004] In order to solve the above problems, the technical solution adopted by the utility model is: an air-cooled battery pack for charging and storage equipment, including a cabinet, the cabinet including an air inlet plate and an exhaust plate arranged in parallel along the horizontal direction, an air-cooling assembly, a plurality of battery cells and a battery cell limiting assembly are arranged in the cabinet, the air-cooling assembly includes an exhaust fan, the exhaust fan includes an air inlet fan installed close to the air inlet plate and an exhaust fan installed close to the exhaust plate, and a longitudinal cold air flow is formed when the air inlet fan and the exhaust fan are started; the battery cell limiting assembly includes a limit plate, a plurality of limit strips are longitudinally arranged on the limit plate, the plurality of limit strips are evenly spaced in the horizontal direction, the limit plate is detachably connected to the cabinet, and the battery cell is installed between the two limit strips.

[0005] The beneficial effects of this solution are: when the air intake fan and the exhaust fan are started, a longitudinal cold air flow is formed; the longitudinal air flow passes through the air duct formed by the gaps between the battery cells separated by the limit strips, and the external cold air flow is sent into the air duct between the battery cells by the air intake fan, and the hot air flow in the air duct and the battery pack is further discharged from the battery pack by the exhaust fan. The heat accumulation generated by the battery cell is effectively avoided by heat exchange, so as to achieve the effect of reducing the battery cell temperature when the battery pack is working.

[0006] Furthermore, the limit plate also includes a top limit plate and a bottom limit plate, the bottom limit plate is detachably connected to the cabinet bottom plate, and the top limit plate is detachably fixed to the cabinet side wall. By arranging limit plates and limit strips at the top and bottom, the two ends are limited and fixed, ensuring the ventilation effect of the battery cell gap.

[0007] Furthermore, the top limit plate and the bottom limit plate are both hollow plates with a central opening, and the limit strip is installed at the central opening. The use of a hollow limit plate improves the ventilation performance of the limit plate and facilitates the embedding of the battery cell between the two limit strips.

[0008] Furthermore, the top limit plate is provided with three openings, which are distributed in the longitudinal direction, and each of the three openings is provided with a limit strip, and a plurality of wire harness binding rings are fixed on the upper surface of the top limit plate, so as to facilitate the binding of wire harnesses between the battery cells.

[0009] Furthermore, a cell spacer is detachably connected between two adjacent cells in the longitudinal direction. When a longitudinal airflow is formed, the airflow continuously flows through the longitudinal gap of the cell, and according to the Bernoulli principle, a negative pressure is formed in the longitudinal gap, so that the hot air in the transverse gap connected to the longitudinal gap can be adsorbed and taken away, thereby realizing the discharge of heat inside the cell.

[0010] Furthermore, the air cooling assembly also includes a fan mounting plate, a spoiler is provided between the fan mounting plate and the battery cell, the exhaust fan is installed on the fan mounting plate, and the spoiler is detachably connected to the cabinet. The spoiler is provided to solve the problem of poor regional flow velocity consistency caused by the rotation of the vertical fan airflow. The spoiler plays a wind guiding effect, making it easier for external cold air to evenly blow into the gaps between the battery cells, thereby solving the problem of poor thermal uniformity of the whole package.

[0011] Furthermore, a battery cell mounting base plate, a thermal conductive pad and a heating film are sequentially arranged between the bottom limit plate and the cabinet bottom plate from top to bottom. The thermal conductive pad is provided for insulation, and the heating film is used to heat the battery in cold seasons to ensure that the battery pack can be charged and discharged normally.

[0012] Furthermore, the limiter components are all made of epoxy resin. Epoxy resin has good insulation and flame retardant properties, and can firmly fix the battery cells in the frame while providing good electrical insulation properties. While fixing the battery cells, it helps with electrical protection and prevents heat diffusion in extreme cases.

[0013] Furthermore, the limit strips are detachably connected to the limit plate. By adopting the detachable connection method, the spacing between the limit strips can be adjusted according to the size of the battery cells. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of an embodiment of the utility model.

[0015] Figure 2 This is a schematic diagram of the cabinet structure.

[0016] Figure 3 Schematic diagram of the bottom limit plate.

[0017] Figure 4 Schematic diagram of the top limit plate.

[0018] Figure 5 This is the exploded view along the Y axis after the cabinet is hidden.

[0019] Figure 6 This is a three-dimensional view of the device after assembly. DETAILED DESCRIPTION

[0020] The following is further described in detail through specific implementation methods:

[0021] The figure marks in the drawings of the specification include: cabinet 1, cover plate 11, air inlet plate 12, exhaust plate 13, battery cell mounting side plate 14, battery management unit 15, box body 16, exhaust fan 2, fan mounting plate 21, spoiler 22, bottom limit plate 3, battery cell mounting bottom plate 31, limit bar 4, top limit plate 5, wire harness binding ring 51, battery cell spacer 6, battery cell 7.

[0022] Example 1 This is as attached Figure 1-5As shown: an air-cooled battery pack for charging and storage equipment, including a cabinet 1, the cabinet 1 includes a cover plate 11, a box body 16, and an air inlet plate 12 and an exhaust plate 13 arranged in parallel in the transverse direction. An air-cooling component, a plurality of battery cells 7 and a battery cell 7 limiting component are arranged in the cabinet 1, and battery cell 7 partition strips 6 are bonded to the transverse sides of the battery cell 7; the air-cooling component includes an exhaust fan 2, a fan mounting plate 21 and a spoiler 22, the spoiler 22 is located between the fan mounting plate 21 and the battery cell 7, the exhaust fan 2 includes an air inlet fan installed near the air inlet plate 12 and an exhaust fan installed near the exhaust plate 13, the battery cell 7 limiting component includes a limiting plate, a plurality of limiting strips 4 are longitudinally arranged on the limiting plate, and the plurality of limiting strips 4 are evenly spaced in the transverse direction, the limiting plate is bolted to the cabinet 1, and the battery cell 7 is installed between two limiting strips 4. This embodiment is provided with 36 battery cells 7, 36 battery cells 7 are grouped into 3 groups in the longitudinal direction, and the 12 battery cells 7 in the group are distributed in the transverse direction. The battery cells 7 are separated longitudinally by the limit strips 4, and the battery cells 7 are separated transversely by the battery cell 7 partition strips 6. The spoiler 22 and the fan mounting plate 21 arranged near the air inlet plate 12 are connected by screws to form an air inlet channel, and the air inlet channel corresponds to the gap between the battery cells 7. Similarly, the spoiler 22 and the fan mounting plate 21 arranged near the discharge plate are connected by screws to form an exhaust channel, thereby forming a complete air inlet and exhaust duct.

[0023] When the air inlet fan and the exhaust fan are started, a longitudinal cold air flow is formed; the longitudinal air flow passes through the air duct formed by the gaps between the 12 battery cells 7 separated by the limit strips 4, and the external cold air flow is sent into the air duct between the battery cells 7 by the air inlet fan, and the hot air flow in the air duct and the battery pack is further discharged from the battery pack through the exhaust fan 2; at the same time, when the longitudinal air flow is formed, the air flow continues to flow through the longitudinal gap of the battery cell 7, and according to the Bernoulli principle, a negative pressure is formed in the longitudinal gap, so that the hot air in the transverse gap connected to the longitudinal gap can be adsorbed and taken away, thereby realizing the discharge of the heat inside the battery cell 7. The heat accumulation generated by the battery cell 7 is effectively avoided by heat exchange, so as to achieve the effect of reducing the temperature of the battery cell 7 when the battery pack is working.

[0024] A battery cell 7 installation side plate 14 is longitudinally arranged in the cabinet 1 , and the battery cell 7 installation side plate 14 divides the cabinet 1 into a battery cell 7 room and a battery monitoring unit installation room, and the battery monitoring unit is installed in the battery monitoring installation room.

[0025] The limit plate also includes a top limit plate 5 and a bottom limit plate 3. The bottom limit plate 3 is bolted to the bottom plate of the cabinet 1, and the top limit plate 5 is bolted to the side wall of the cabinet 1 and the side plate 14 for installing the battery cell 7. The top limit plate 5 is provided with three openings, which are distributed in the longitudinal direction. Limit strips 4 are provided in the three openings. A plurality of wire harness binding rings 51 are fixed on the upper surface of the top limit plate 5. The wire harness binding rings 51 are provided to facilitate the binding of the wires of the battery cell 7.

[0026] Between the bottom limit plate 3 and the bottom plate of the cabinet 1, there are arranged a battery cell 7 mounting bottom plate 31, a thermal conductive pad and a heating film from top to bottom. The thermal conductive pad is provided for insulation, and the battery is heated by the heating film in cold seasons to ensure that the battery pack can be charged and discharged normally. The limit components are all made of epoxy resin. Epoxy resin has excellent adhesion and insulation properties. It can firmly fix the battery cell in the frame and provide good electrical insulation performance. While fixing the battery cell, it helps electrical protection and prevents heat diffusion in extreme cases.

[0027] The above is only an embodiment of the utility model, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. An air-cooled battery pack for a charging and storage device, characterized in that: It includes a cabinet body, which includes an air inlet plate and an air exhaust plate arranged in parallel in the transverse direction. An air cooling component, a plurality of battery cells and a battery cell limiting component are arranged in the cabinet body. The air cooling component includes an exhaust fan, and the exhaust fan includes an air inlet fan installed close to the air inlet plate and an exhaust fan installed close to the exhaust plate. The air inlet fan and the exhaust fan form a longitudinal cold air flow. The battery cell limiting component includes a limiting plate, and a plurality of limiting strips are longitudinally arranged on the limiting plate. The plurality of limiting strips are evenly spaced in the transverse direction. The limiting plate is detachably connected to the cabinet body, and the battery cell is installed between two limiting strips.

2. The air-cooled battery pack for charging and storage equipment according to claim 1, characterized in that: The limiting plate also includes a top limiting plate and a bottom limiting plate. The bottom limiting plate is detachably connected to the bottom plate of the cabinet, and the top limiting plate is detachably fixed to the side wall of the cabinet.

3. The air-cooled battery pack for charging and storage equipment according to claim 2, characterized in that: The top limiting plate and the bottom limiting plate are both hollow plates with a central opening, and the limiting strip is installed at the central opening.

4. The air-cooled battery pack for charging and storage equipment according to claim 3, characterized in that: The top limiting plate is provided with three openings, which are distributed in the longitudinal direction. Limiting strips are provided in the three openings, and a plurality of wire harness binding rings are fixed on the upper surface of the top limiting plate.

5. The air-cooled battery pack for charging and storage equipment according to claim 1, characterized in that: A cell spacer is detachably connected between two adjacent cells in the longitudinal direction.

6. The air-cooled battery pack for charging and storage equipment according to claim 1, characterized in that: The air cooling component also includes a fan mounting plate, a spoiler is provided between the fan mounting plate and the battery core, the exhaust fan is mounted on the fan mounting plate, and the fan mounting plate and the spoiler are respectively detachably connected to the cabinet.

7. The air-cooled battery pack for charging and storage equipment according to claim 2, characterized in that: A battery cell mounting base plate, a thermal conductive pad and a heating film are arranged in sequence from top to bottom between the bottom limiting plate and the cabinet bottom plate.

8. The air-cooled battery pack for charging and storage equipment according to claim 2, characterized in that: The limiting components are all made of epoxy resin.

9. The air-cooled battery pack for charging and storage equipment according to claim 1, characterized in that: The limiting strip is detachably connected to the limiting plate.

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