Air-cooled energy storage battery pack and energy storage cabinet comprising same

Abstract

An air opening is formed in the middle of the front face of a battery shell, a fan in butt joint with the air opening is fixed to the outer wall of the front face of the battery shell, a total positive power connector and a total negative power connector are fixed to the front face of the battery shell, and a first battery cell installation area and a second battery cell installation area are formed in the inner bottom of the battery shell. A plurality of connected battery cells are mounted in the first battery cell mounting area and the second battery cell mounting area, the total positive power connector is connected with the positive electrode of the first battery cell in the first battery cell mounting area through a total positive copper bar, and the total negative power connector is connected with the negative electrode of the first battery cell in the second battery cell mounting area through a total negative copper bar; a surrounding wind channel is fixed on the inner wall of the front surface of the battery shell and around the periphery of the air port, a capacitance wire is fixed on the inner wall of the back surface of the battery shell, and one end of the capacitance wire is connected with the cathode of the last battery cell in the first battery cell mounting area through a first copper bar; and the other end of the capacitance wire is connected with the positive electrode of the last battery cell in the second battery cell mounting area through a second copper bar.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage battery packs, in particular to an air-cooled energy storage battery pack and an energy storage cabinet comprising the same. Background Art

[0002] A battery pack is formed by connecting multiple single cells or supercapacitors in series and parallel to form a battery cell. Multiple battery cells are then connected in series and parallel to form a battery module of a certain voltage and capacity, which is placed inside a sealed box. The development of energy storage technology has placed higher demands on the heat dissipation capacity of the battery pack. The temperature environment within the battery pack has a significant impact on the reliability and service life of the battery cells. Therefore, it is particularly important to maintain the temperature within the battery pack within a certain temperature range. Air cooling is a cooling method that uses air as a cooling medium and utilizes convection heat transfer to reduce the temperature of the battery. In addition, the overall structure of the air cooling system is relatively simple and easy to maintain, with a relatively low initial investment cost. Based on the above advantages, air cooling is currently the most mainstream solution in the field of energy storage temperature control.

[0003] Most existing battery packs use simple fans for heat dissipation, but no air ducts are provided, resulting in poor heat dissipation of the battery pack as a whole. In addition, the structure of the existing battery pack is relatively complex and the installation is complicated. Utility Model Content

[0004] In view of the problems and shortcomings of the prior art, the utility model provides an air-cooled energy storage battery pack and an energy storage cabinet including the same.

[0005] The utility model solves the above technical problems through the following technical solutions:

[0006] The utility model provides an air-cooled energy storage battery pack, which is characterized in that it includes a battery shell, an air outlet is opened at the middle position of the front of the battery shell, a fan connected to the air outlet is fixed on the front outer wall of the battery shell, and a total positive power connector and a total negative power connector are also embedded and fixed on the front of the battery shell. The bottom of the battery shell is divided into a first battery cell installation area and a second battery cell installation area by a middle partition. The first battery cell installation area and the second battery cell installation area are both installed with a plurality of connected battery cells. The total positive power connector is connected to the positive electrode of the battery cell closest to the front of the battery shell in the first battery cell installation area through a total positive copper busbar, and the total negative power connector is connected to the positive electrode of the battery cell closest to the front of the battery shell through a total negative copper busbar. The copper busbar is connected to the negative pole of the battery cell in the second battery cell installation area closest to the front of the battery shell, and baffles are fixed on the front inner wall of the battery shell and around the air outlet to form an air duct surrounding the air outlet, and the opening of the air duct faces the battery cell, and a capacitor wire is fixed on the back inner wall of the battery shell, one end of the capacitor wire is connected to the negative pole of the battery cell in the first battery cell installation area closest to the back of the battery shell through the first copper busbar, and the other end of the capacitor wire is connected to the positive pole of the battery cell in the second battery cell installation area closest to the back of the battery shell through the second copper busbar, so that the battery cells in the first battery cell installation area and the second battery cell installation area are connected, and these battery cells constitute a battery cell module.

[0007] The utility model also provides an energy storage cabinet, which is characterized in that it includes the above-mentioned air-cooled energy storage battery pack.

[0008] The positive progress effect of this utility model is:

[0009] The utility model has a reasonable structural setting, a relatively simple structure, and is easy to install and lift. The utility model builds an enclosure air duct between the fan and the battery cell module, so that the enclosure air duct can collect the heat generated by the battery cell. When the fan is turned on, the heat will be blown into the energy storage cabinet, and the air-conditioning fan in the energy storage cabinet will blow the heat out of the energy storage cabinet through the heat dissipation holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is an appearance diagram of an air-cooled energy storage battery pack according to a preferred embodiment of the present invention.

[0011] Figure 2-4 This is a schematic diagram of the internal structure of an air-cooled energy storage battery pack according to a preferred embodiment of the present invention.

[0012] Figure 5 This is a schematic diagram of the internal left side structure of an air-cooled energy storage battery pack according to a preferred embodiment of the present invention.

[0013] Figure 6 This is a schematic diagram of the internal right side structure of an air-cooled energy storage battery pack according to a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0014] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0015] like Figure 1-6 As shown, this embodiment provides an air-cooled energy storage battery pack, which includes a battery housing 1 consisting of a shell and a shell cover. An air vent is opened in the middle position of the front of the battery housing 1, and a fan 2 connected to the air vent is fixed on the front outer wall of the battery housing 1; the front of the battery housing 1 is also embedded with a total positive power connector 3 and a total negative power connector 4, which are located on the right side of the fan 2, and the total positive power connector 3 is located at the bottom, and the total negative power connector 4 is located at the top; the front of the battery housing 1 is also embedded with at least one communication terminal 5 (two are provided in this embodiment), and the communication terminal 5 is located on the left side of the fan 2; the front of the battery housing 1 is also provided with a nameplate 6 and a high-voltage warning sign 7; handles 8 are fixed at both ends of the front of the battery housing 1.

[0016] The bottom of the battery shell 1 is divided into a first battery cell installation area 10 and a second battery cell installation area 11 by a middle partition 9. The first battery cell installation area 10 and the second battery cell installation area 11 are both installed with a plurality of connected (series or parallel) battery cells (not shown in the figure). The total positive power connector 3 is connected to the positive electrode of the battery cell closest to the front of the battery shell 1 in the first battery cell installation area 10 (the first battery cell in the first battery cell installation area 10 viewed from left to right) through the total positive copper bus 12, and the total negative power connector 4 is connected to the negative electrode of the battery cell closest to the front of the battery shell 1 in the second battery cell installation area 11 (the first battery cell in the second battery cell installation area 11 viewed from left to right) through the total negative copper bus 13; baffles are fixed on the inner wall of the front of the battery shell 1 and around the air outlet to form an enclosed air duct 14 surrounding the air outlet, which is enclosed by the air duct. The opening of 14 faces the battery cell; a capacitor wire 15 is fixed on the inner wall of the back side of the battery shell 1, and one end of the capacitor wire 15 is connected to the negative pole of the battery cell closest to the back side of the battery shell 1 in the first battery cell installation area 10 (the last battery cell in the first battery cell installation area 10 viewed from left to right) through the first copper bus 16, and the other end of the capacitor wire 15 is connected to the positive pole of the battery cell closest to the back side of the battery shell 1 in the second battery cell installation area 11 (the last battery cell in the second battery cell installation area 11 viewed from left to right) through the second copper bus 17, so that the battery cells in the first battery cell installation area 10 and the second battery cell installation area 11 are connected (in series or in parallel), and these battery cells constitute a battery cell module; a battery management unit (BMU) 18 is installed in the battery shell 1, and the battery management unit 18 is electrically connected to the battery cell module, the fan 2 and the communication terminal 5.

[0017] A U-shaped pressure plate 19 with an opening facing downward is provided in the battery housing 1 . One vertical bottom end of the U-shaped pressure plate 19 is fixed to the top of the enclosed air duct 14 , and the other vertical bottom end is fixed to the end surface of the middle partition 9 close to the back of the battery housing 1 .

[0018] Lifting holes 20 are provided on opposite sides of the battery housing 1. Stoppers 21 corresponding to the lifting holes 20 are fixed to the inner walls of the opposite sides of the battery housing 1. The stoppers 21 block the inner sides of the lifting holes 20. The lifting holes 20 are provided to facilitate lifting the energy storage battery pack, and the stoppers 21 are provided to prevent external wind, dust, etc. from entering the battery housing 1 through the lifting holes 20.

[0019] Among them, the main positive copper bar 12 is a bent copper bar, the bent part of the main positive copper bar 12 is soft and the non-bent part is hard; the main negative copper bar 13 is a bent copper bar, the bent part of the main negative copper bar 13 is soft and the non-bent part is hard.

[0020] This embodiment also provides an energy storage cabinet, which includes the above-mentioned air-cooled energy storage battery pack.

[0021] In this embodiment, the battery management unit 18 monitors the voltage and temperature of the battery cells in real time. If the temperature is too high, fan 2 is activated to reduce the temperature. The enclosed air duct 14 collects the heat generated by the battery cells. When fan 2 is activated, it blows the heat into the energy storage cabinet. The air conditioning fan in the energy storage cabinet then blows the heat out of the cabinet through heat dissipation holes. The battery management unit 18 transmits the monitored data to the main controller in the energy storage cabinet via communication terminal 5.

[0022] Although specific embodiments of the present invention have been described above, those skilled in the art will appreciate that these are merely illustrative and that the scope of protection of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, and such changes and modifications are intended to fall within the scope of protection of the present invention.

Claims

1. An air-cooled energy storage battery pack, characterized in that: It includes a battery shell, an air vent is opened at the middle position of the front of the battery shell, a fan connected to the air vent is fixed on the front outer wall of the battery shell, and a total positive power connector and a total negative power connector are also embedded and fixed on the front of the battery shell. The bottom of the battery shell is divided into a first battery cell installation area and a second battery cell installation area by a middle partition. The first battery cell installation area and the second battery cell installation area are both installed with a plurality of connected battery cells. The total positive power connector is connected to the positive electrode of the battery cell closest to the front of the battery shell in the first battery cell installation area through a total positive copper busbar, and the total negative power connector is connected to the positive electrode of the battery cell in the second battery cell installation area through a total negative copper busbar. The negative pole of the battery cell closest to the front of the battery shell is connected, and baffles are fixed on the front inner wall of the battery shell and around the air outlet to form an enclosed air duct surrounding the air outlet, and the opening of the enclosed air duct faces the battery cell. A capacitor wire is fixed on the back inner wall of the battery shell, one end of the capacitor wire is connected to the negative pole of the battery cell closest to the back of the battery shell in the first battery cell installation area through a first copper busbar, and the other end of the capacitor wire is connected to the positive pole of the battery cell closest to the back of the battery shell in the second battery cell installation area through a second copper busbar, so that the battery cells in the first battery cell installation area and the second battery cell installation area are connected, and these battery cells constitute a battery cell module.

2. The air-cooled energy storage battery pack according to claim 1, characterized in that: A U-shaped pressure plate with a downward opening is provided in the battery housing. One vertical bottom end of the U-shaped pressure plate is fixed to the top of the enclosed air duct, and the other vertical bottom end is fixed to the end surface of the middle partition close to the back of the battery housing.

3. The air-cooled energy storage battery pack according to claim 1, characterized in that: At least one communication terminal is also embedded in the front of the battery housing. A battery management unit is installed in the battery housing. The battery management unit is electrically connected to the battery module, the fan and the communication terminal.

4. The air-cooled energy storage battery pack according to claim 3, characterized in that: There are two communication terminals, namely a first communication terminal and a second communication terminal.

5. The air-cooled energy storage battery pack according to claim 1, wherein: Handles are respectively fixed on both ends of the front side of the battery housing.

6. The air-cooled energy storage battery pack according to claim 1, characterized in that: Hanging holes are respectively opened on the two opposite side surfaces of the battery shell, and stoppers corresponding to the hanging holes are respectively fixed on the inner walls of the two opposite side surfaces of the battery shell, and the stoppers block the inner sides of the hanging holes.

7. The air-cooled energy storage battery pack according to claim 1, wherein: The main positive copper bar is a bent copper bar, the bent portion of the main positive copper bar is soft, and the non-bent portion is hard.

8. The air-cooled energy storage battery pack according to claim 1, wherein: The total negative copper bar is a bent copper bar, the bent portion of the total negative copper bar is soft, and the non-bent portion is hard.

9. An energy storage cabinet, characterized in that: It includes the air-cooled energy storage battery pack according to any one of claims 1 to 8.

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