Outdoor lithium battery UPS (Uninterrupted Power Supply)

Abstract

The invention discloses an outdoor lithium battery UPS (Uninterrupted Power Supply), and relates to the technical field of UPSs. The battery pack comprises a battery pack supporting shell and a plurality of independent battery packs, and the battery packs are inserted into the supporting shell in a sliding mode and are stably fixed through limiting pins. A guide plate, a middle baffle and an aerogel pad are arranged in each battery pack, so that efficient heat management and pressure relief control are realized. And when the battery core deflagrates, the pressure relief gas pushes the limiting mechanism to release, so that the damaged battery pack is automatically separated, and the system safety is improved. A relay normally-closed contact redundancy switching mechanism ensures that when any battery pack fails, a subsequent battery can automatically take over power supply. The system has multiple advantages of modularization, quick replacement, efficient heat dissipation, automatic separation and redundant power supply, and is suitable for high-safety power supply scenes in a complex outdoor environment.

Description

Technical Field

[0001] The present invention relates to the technical field of UPS power supplies, in particular to an outdoor lithium battery UPS power supply. Background Art

[0002] Currently, outdoor lithium-ion UPS power supplies mostly use a fixed battery pack structure and lack a modular design, which makes it difficult to quickly replace batteries when they are damaged, and the overall maintenance cost of the system is high. Battery packs in existing technologies are mostly sealed as a whole and lack effective internal pressure relief and thermal management mechanisms. Once thermal runaway of the battery cells occurs, it is very easy to cause a chain reaction explosion accident, and the damage cannot be effectively limited to a single battery pack. In addition, the existing system lacks automatic switching and isolation mechanisms when the battery pack is damaged, resulting in a high risk of power supply interruption and poor safety and continuity. Most UPS systems rely solely on electronic control panels to identify faulty batteries, which is highly complex, has many failure points, and cannot operate reliably in harsh outdoor environments. The existing pressure relief channel design is simple, and it is easy to affect adjacent battery packs after pressure relief. It also lacks effective explosion isolation and automatic disengagement design, and the overall protection performance is poor. Summary of the Invention

[0003] In order to overcome the defects of the above-mentioned prior art, the present invention provides the following technical solutions: an outdoor lithium battery UPS power supply, comprising a battery pack support shell, wherein the battery pack support shell is provided with six independent cavities, each cavity is provided with a battery pack in a sliding manner; the battery pack comprises a battery pack shell, wherein the inner wall of the battery pack shell is fixedly provided with a reinforcing partition and an intermediate baffle, a plurality of battery cells are provided on both sides of the intermediate baffle, an aerogel pad is provided between two adjacent battery cells, the pressure relief valves of all battery cells on both sides of the intermediate baffle are arranged toward the intermediate baffle, and the surface of the intermediate baffle is provided with a guide plate; a tail sealing cover is also fixedly installed on the battery pack shell, and the tail sealing cover is used to encapsulate all the battery cells in the inner wall of the battery pack shell, and all the battery cells are fixedly installed on the inner wall of the battery pack shell, a nozzle is fixedly installed in the middle of the tail sealing cover, and the nozzle is aligned with the middle baffle, and a conductive contact is also provided on the tail sealing cover; a limit pin sliding hole is provided at the position of each cavity on the battery pack support shell, and a limit pin that is squeezed and frictionally matched with the battery pack shell is slidably installed in each limit pin sliding hole, and the limit pin is used to prevent the battery pack shell from slipping out of the cavity.

[0004] Preferably, an insulating sealing back plate is fixedly mounted on the battery pack support shell, and a plurality of power-leading contacts are fixedly mounted on the insulating sealing back plate. The power-leading contacts are in contact with the conductive contacts and conduct electricity, and each power-leading contact is insulated and isolated by the insulating sealing back plate.

[0005] Preferably, six unlocking exhaust ports are provided on the insulating sealing back plate, each unlocking exhaust port is aligned with the corresponding nozzle, and each unlocking exhaust port is provided with a one-way baffle, which can block the unlocking exhaust port. The outer side of all unlocking exhaust ports is buckled with a back sealing pressure guide buckle cover, and the upper and lower edges of the back sealing pressure guide buckle cover are provided with air guide grooves.

[0006] Preferably, each one-way baffle is fixedly mounted with a one-way baffle guide slide rod, which slides in cooperation with the back sealing pressure guide buckle cover, and a spring is provided around the one-way baffle guide slide rod, and both ends of the spring are fixed in cooperation with the one-way baffle and the back sealing pressure guide buckle cover.

[0007] Preferably, the upper and lower surfaces of the battery pack support shell are fixedly installed with a drive plate, and three sliding cavities aligned with the sliding holes of the limit pin are provided on the drive plate, and an E-shaped gas pressure-guiding groove is provided on the side of the drive plate facing the battery pack support shell, and the gas pressure-guiding groove is used to connect the three sliding cavities with the gas guide groove; a sealing piston plate is installed with a sliding seal in the sliding cavity, and the sealing piston plate is fixedly matched with the limit pin, and an unlocking pull block is fixedly installed on each sealing piston plate; an elastic rubber pad limit strip is fixedly installed on the side of the drive plate away from the battery pack support shell, and an elastic rubber pad is elastically arranged between the elastic rubber pad limit strip and the limit pin, which is used to squeeze the limit pin to move toward the battery pack shell.

[0008] Preferably, a shell buckle plate is provided on the fixed buckle of the driving plate, and a shovel block limit block is fixedly installed at the position of the sliding cavity on each driving plate, and a shovel block is overlapped on the shovel block limit block, and the shovel block slides with the driving plate, and the shovel block is used to scoop up the unlocking pull block, wherein a groove is provided on the unlocking pull block, and the shovel block is provided with an inclined surface that slides with the groove on the unlocking pull block, and an unlocking push-pull rod is fixedly installed on each shovel block, and the unlocking push-pull rod extends to the outside of the shell buckle plate at one end away from the shovel block.

[0009] Preferably, the output ends of the six battery packs are electrically connected to the input ends of the inverter in parallel (the output ends of the inverter are used to connect to the electrical load, and the battery pack charging requires each battery pack to be charged individually, and each battery pack is equipped with an independent charging unit), and diodes are installed in series between the output ends of battery packs 1-battery packs 5 and the input ends of the inverter, and the output ends of battery packs 1-battery packs 5 are all arranged in parallel with the electromagnetic coils of the corresponding relays KM1-relay KM5.

[0010] Preferably, the normally closed contact of relay KM1 is arranged in series between the output end of battery pack 2 and relay KM2; the normally closed contacts of relay KM2 and relay KM1 are arranged in series between the output end of battery pack 3 and relay KM3; the normally closed contacts of relay KM3, relay KM2 and relay KM1 are arranged in series between the output end of battery pack 4 and relay KM4; the normally closed contacts of relay KM4, relay KM3, relay KM2 and relay KM1 are arranged in series between the output end of battery pack 5 and relay KM5; the normally closed contacts of relay KM5, relay KM4, relay KM3, relay KM2 and relay KM1 are arranged in series between the output end of battery pack 6 and the input end of the inverter.

[0011] Compared with the prior art, the present invention has the following advantages: (1) The present invention provides multiple independent cavities in the battery pack support shell, allowing the battery pack to be flexibly installed and replaced by sliding and plugging. The battery pack has strong independence, and the number of batteries can be flexibly configured according to actual power demand, thereby achieving flexible adjustment of power output. The modular structure allows a single battery pack to be quickly located and replaced individually when a fault occurs, greatly improving the maintainability and reliability of the system, reducing the overall operation and maintenance costs, and is particularly suitable for variable outdoor power supply scenarios; (2) The battery pack of the present invention uses a structure in which a limit pin and a limit pin sliding hole cooperate to perform physical limiting, and is supplemented by an elastic rubber pad to provide stable support, ensuring that the battery pack will not fall off in complex environments such as strong vibration and tilt. If a battery cell explodes, the pressure relief airflow can trigger the limit pin to automatically release, and the exhaust path is closed by the back sealing pressure guide buckle cover, and the battery pack is automatically ejected by air pressure, effectively isolating the damaged battery, preventing the accident from spreading, and improving the safety protection capability of the system in harsh environments; (3) The battery cell pressure relief valves of the present invention are uniformly arranged toward the middle baffle, and the pressure relief airflow is guided to be concentrated through the guide plate to avoid the direct impact of the flame on other battery cells. The one-way discharge of the pressure relief gas at the nozzle forms a local and efficient pressure relief channel. Through this mechanism, even if a severe accident occurs inside the battery pack, rapid and directional pressure relief can be achieved, thereby reducing the overall risk of the system; (4) The present invention adopts a series relay normally closed contact control mechanism, and battery packs 1-6 are connected in series in sequence for fault protection. When the current level battery pack fails, its corresponding relay is de-energized, and the subsequent battery packs automatically switch to the working power supply to ensure uninterrupted power supply of the UPS system; (5) Aerogel pads are arranged between the battery cells of the present invention to achieve excellent thermal insulation effect and slow down the speed at which the heat of a single battery cell spreads to the surrounding battery cells. At the same time, through the guidance of the intermediate baffle and the guide plate, efficient airflow management is achieved during the pressure relief process, avoiding heat accumulation inside the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0013] Figure 2 This is a structural diagram of the elastic rubber pad limiting strip of the present invention.

[0014] Figure 3 For the present invention Figure 2 Schematic diagram of the structure at point A in the middle.

[0015] Figure 4 This is a structural diagram of the driving plate of the present invention.

[0016] Figure 5 For the present invention Figure 4 Schematic diagram of the structure at point B in the middle.

[0017] Figure 6 This is a structural diagram of the back sealing pressure-guiding buckle cover of the present invention.

[0018] Figure 7 For the present invention Figure 6 Schematic diagram of the structure at point C in the middle.

[0019] Figure 8 It is a structural schematic diagram of the gas pressure guiding groove of the present invention.

[0020] Figure 9 It is a structural schematic diagram of the sliding hole of the limit pin of the present invention.

[0021] Figure 10 For the present invention Figure 9 Schematic diagram of the structure at point D in the middle.

[0022] Figure 11 Schematic diagram of the internal structure of the battery pack housing of the present invention.

[0023] Figure 12 It is a structural schematic diagram of the guide plate of the present invention.

[0024] Figure 13 This is a schematic diagram of the power supply of the battery pack of the present invention.

[0025] In the figure: 101 - battery pack support shell; 102 - limit pin sliding hole; 103 - insulating sealing back plate; 104 - power contact; 105 - one-way baffle guide slide; 106 - one-way baffle; 107 - spring; 108 - back sealing pressure guide buckle cover; 109 - air guide groove; 110 - drive plate; 111 - gas pressure guide groove; 112 - sliding cavity; 113 - elastic rubber pad limit strip; 114 - unlocking pull block ;115-elastic rubber pad;116-sealing piston plate;117-limiting pin;118-shovel block;119-shovel block limiting block;120-unlocking push-pull rod;121-shell buckle plate;122-unlocking exhaust port;201-battery pack shell;202-reinforced partition;203-tail sealing cover;204-middle baffle;205-guide plate;206-battery cell;207-nozzle;208-conductive contact. DETAILED DESCRIPTION

[0026] The following is combined with Figures 1-13 , and further illustrate the technical solution of the present invention through specific implementation methods.

[0027] The present invention provides an outdoor lithium battery UPS power supply, comprising a battery pack supporting shell 101, wherein the battery pack supporting shell 101 is provided with six mutually independent cavities, each cavity being provided with a battery pack in a sliding manner; the battery pack comprises a battery pack shell 201, wherein the inner wall of the battery pack shell 201 is fixedly mounted with a reinforcing partition 202 and an intermediate baffle 204, wherein a plurality of battery cells 206 are arranged on both sides of the intermediate baffle 204, an aerogel pad is arranged between two adjacent battery cells 206, the pressure relief valves of all battery cells 206 on both sides of the intermediate baffle 204 are arranged facing the intermediate baffle 204, and a guide plate 205 is arranged on the surface of the intermediate baffle 204; a tail is also fixedly mounted on the battery pack shell 201 The sealing cover 203 and the tail sealing cover 203 are used to encapsulate all the battery cells 206 in the inner wall of the battery pack shell 201, and all the battery cells 206 are fixedly installed on the inner wall of the battery pack shell 201. A nozzle 207 is fixedly installed in the middle of the tail sealing cover 203, and the nozzle 207 is aligned with the middle baffle 204. A conductive contact 208 is also provided on the tail sealing cover 203; a limit pin sliding hole 102 is provided at the position of each cavity on the battery pack support shell 101, and a limit pin 117 that is squeezed and frictionally matched with the battery pack shell 201 is slidably installed inside each limit pin sliding hole 102, and the limit pin 117 is used to prevent the battery pack shell 201 from slipping out of the cavity.

[0028] An insulating sealing backplate 103 is also fixedly mounted on the battery pack support housing 101. Multiple electrical contacts 104 are fixedly mounted on the insulating sealing backplate 103. These electrical contacts 104 are in contact with and electrically coupled to the conductive contacts 208. Each electrical contact 104 is insulated and isolated by the insulating sealing backplate 103. Six unlocking vents 122 are defined on the insulating sealing backplate 103. Each unlocking vent 122 is aligned with a corresponding nozzle 207. Each unlocking vent 122 is equipped with a one-way baffle 106 that can block the unlocking vent 122. All unlocking vents 122 are secured to their outer sides with back-sealed pressure-guiding buckle covers 108. Air guide grooves 109 are defined on both the upper and lower edges of the back-sealed pressure-guiding buckle covers 108. A one-way baffle guide slide 105 is fixedly installed on each one-way baffle 106, and the one-way baffle guide slide 105 is slidably matched with the back sealing pressure guide buckle cover 108. A spring 107 is provided around the one-way baffle guide slide 105, and the two ends of the spring 107 are fixedly matched with the one-way baffle 106 and the back sealing pressure guide buckle cover 108. The upper and lower surfaces of the battery pack support shell 101 are fixedly installed with a driving plate 110, and three sliding cavities 112 are provided on the driving plate 110, which are aligned with the limit pin sliding hole 102. The driving plate 110 is provided with an E-shaped gas pressure-conducting groove 111 on the side facing the battery pack support shell 101, and the gas pressure-conducting groove 111 is used to connect the three sliding cavities 112 with the gas guide groove 109; a sealing piston plate 116 is slidingly sealed in the sliding cavity 112, and the sealing piston plate 116 is fixedly matched with the limit pin 117, and an unlocking pull block 114 is fixedly installed on each sealing piston plate 116; an elastic rubber pad limit strip 113 is fixedly installed on the side of the driving plate 110 away from the battery pack support shell 101, and an elastic rubber pad 115 is elastically arranged between the elastic rubber pad limit strip 113 and the limit pin 117, which is used to squeeze the limit pin 117 toward the battery pack shell 201. A shell buckle plate 121 is fixedly provided on the drive plate 110, and a shovel block limit block 119 is fixedly installed at the position of the sliding cavity 112 on each drive plate 110, and a shovel block 118 is overlapped on the shovel block limit block 119. The shovel block 118 slides with the drive plate 110, and the shovel block 118 is used to scoop up the unlocking pull block 114, wherein a groove is provided on the unlocking pull block 114, and the shovel block 118 is provided with an inclined surface that slides with the groove on the unlocking pull block 114. An unlocking push-pull rod 120 is fixedly installed on each shovel block 118, and the unlocking push-pull rod 120 extends to the outside of the shell buckle plate 121 at one end away from the shovel block 118.

[0029] The output ends of the six battery packs are electrically connected to the input ends of the inverter in parallel (the output ends of the inverter are used to connect to the electrical load, and the battery pack charging requires each battery pack to be charged individually, and each battery pack is equipped with an independent charging unit). Diodes are installed in series between the output ends of battery packs 1 to 5 and the input ends of the inverter, and the output ends of battery packs 1 to 5 are all set in parallel with the electromagnetic coils of the corresponding relays KM1 to KM5. The normally closed contact of relay KM1 is arranged in series between the output end of battery pack 2 and relay KM2; the normally closed contacts of relay KM2 and relay KM1 are arranged in series between the output end of battery pack 3 and relay KM3; the normally closed contacts of relay KM3, relay KM2 and relay KM1 are arranged in series between the output end of battery pack 4 and relay KM4; the normally closed contacts of relay KM4, relay KM3, relay KM2 and relay KM1 are arranged in series between the output end of battery pack 5 and relay KM5; the normally closed contacts of relay KM5, relay KM4, relay KM3, relay KM2 and relay KM1 are arranged in series between the output end of battery pack 6 and the input end of the inverter.

[0030] The working principle of an outdoor lithium battery UPS power supply disclosed in the present invention is as follows: according to the needs of the user, the required number of battery packs are inserted into the cavity of the battery pack support shell 101. The plugging process is: first partially insert the battery pack shell 201 into the cavity of the battery pack support shell 101. At this time, the edge of the battery pack shell 201 will be supported by the limit pin 117. At this time, the unlocking push-pull rod 120 at the corresponding position is pressed (the same is true when disassembling). The unlocking push-pull rod 120 pushes the shovel block 118 to squeeze the unlocking pull block 114, so that the unlocking pull block 114 moves in a direction away from the battery pack shell 201, and then drives the sealing piston plate 116 and the limit pin 117 to move synchronously. When the battery pack housing 201 is fully inserted, the limit pin 117 retracts into the limit pin sliding hole 102 and continues to be inserted into the battery pack housing 201 until it is fully inserted. At this time, the unlocking push-pull rod 120 can be released. Under the elastic force of the elastic rubber pad 115, the limit pin 117 presses the battery pack housing 201 tightly to prevent relative sliding between the battery pack housing 201 and the battery pack support housing 101 due to vibration (in addition, a resistance clip is provided between the outer surface of the battery pack housing 201 and the inner wall of the battery pack support housing 101 cavity; or a groove is provided on the surface of the battery pack housing 201 to engage with the limit pin 117; or screws are used for fixing, depending on the specific usage scenario). When the conductive contact 208 contacts the corresponding power contact 104, the corresponding battery pack is electrically connected to the inverter input terminal. At this point, power output can be achieved (under normal circumstances, battery packs 1-6 are inserted into the corresponding battery pack support housing 101 cavity in the order of their numbers). If the battery pack is damaged (including explosion), the voltage of the battery pack will drop rapidly (or power off), causing the input end of the resistor group to be unable to supply power to the corresponding relay. At this time, the normally closed contact of the relay will close, such as Figure 13 First, insert battery pack 1. Relay KM1 is energized, so KM1's normally closed contacts are disconnected. Then, insert battery packs 2 through 6 (the output terminals of battery packs 2 through 6 will all be disconnected by relay KM1's normally closed contacts). If battery pack 1 is damaged (the other battery packs will be damaged in a random order; since battery pack 1 is not damaged, all will still function normally, so only the sequential damage is described here), relay KM1's normally closed contacts will close, causing the normally closed contacts of relay KM2 corresponding to battery pack 2 to instantly disconnect. Consequently, relay KM2's normally closed contacts will disconnect the circuits between battery packs 3 through 6, and so on, until battery pack 6 is damaged.

[0031] When the battery pack explodes, it means that the battery cell 206 in the corresponding battery pack is damaged. The explosion of the battery cell 206 will cause the pressure relief valve of the battery cell 206 to spray flames. At this time, the flame will be isolated by the middle baffle 204 to reduce the interference with other battery cells 206, and the jet of flame airflow will be guided by the guide plate 205 on the middle baffle 204. Then the pressure will be transmitted to the nozzle 207. After the nozzle 207 and the exhaust port 122 are unlocked, the one-way baffle 106 will be pushed open (compressed spring 107). At this time, the high-temperature and high-pressure gas will pass through the back sealing pressure guide buckle cover 108 and the gas guide groove. 109, gas pressure-guiding groove 111, and sliding cavity 112 allow the sealing piston plate 116 in sliding cavity 112 to slide under pressure within the sliding cavity 112, causing the limit pin 117 to compress the elastic rubber pad 115, allowing the limit pin 117 to separate from the battery pack housing 201. At this point, the battery pack housing 201 is no longer restricted. Since the back sealing pressure-guiding buckle cover 108 is sealed, the battery pack housing 201 will be ejected from the cavity of the battery pack support housing 101 under the action of pressure, separating the damaged and explosive battery pack from the battery pack support housing 101 (and other battery packs). The one-way stopper 106, which locks the unlocking vent 122, acts as a one-way valve to prevent pressure from being transmitted to the corresponding cavities of other battery packs.

Claims

1. An outdoor lithium battery UPS power supply, characterized by: It comprises a battery pack supporting shell (101), wherein six mutually independent cavities are provided in the battery pack supporting shell (101), and a battery pack is slidably inserted in each cavity; The battery pack includes a battery pack housing (201), wherein a reinforcing partition (202) and an intermediate baffle (204) are fixedly mounted on the inner wall of the battery pack housing (201), a plurality of battery cells (206) are arranged on both sides of the intermediate baffle (204), an aerogel pad is arranged between two adjacent battery cells (206), the pressure relief valves of all battery cells (206) on both sides of the intermediate baffle (204) are arranged toward the intermediate baffle (204), and a guide plate (205) is arranged on the surface of the intermediate baffle (204); A tail sealing cover (203) is also fixedly mounted on the battery pack housing (201), and the tail sealing cover (203) is used to encapsulate all the battery cells (206) in the inner wall of the battery pack housing (201), and all the battery cells (206) are fixedly mounted on the inner wall of the battery pack housing (201). A nozzle (207) is fixedly mounted in the middle of the tail sealing cover (203), and the nozzle (207) is aligned with the middle baffle (204). A conductive contact (208) is also provided on the tail sealing cover (203); a limit pin sliding hole (102) is provided at the position of each cavity on the battery pack support housing (101), and a limit pin (117) is slidably mounted inside each limit pin sliding hole (102) and is extruded and frictionally engaged with the battery pack housing (201), and the limit pin (117) is used to prevent the battery pack housing (201) from sliding out of the cavity.

2. An outdoor lithium battery UPS power supply according to claim 1, characterized in that: An insulating sealing back plate (103) is also fixedly mounted on the battery pack support housing (101), and a plurality of power-leading contacts (104) are fixedly mounted on the insulating sealing back plate (103). The power-leading contacts (104) are in contact with and electrically conductive with the conductive contacts (208), and each power-leading contact (104) is insulated and isolated by the insulating sealing back plate (103).

3. An outdoor lithium battery UPS power supply according to claim 2, characterized in that: Six unlocking exhaust ports (122) are provided on the insulating sealing back plate (103), each unlocking exhaust port (122) is aligned with the corresponding nozzle (207), and each unlocking exhaust port (122) is provided with a one-way baffle (106), which can block the unlocking exhaust port (122), and the outer sides of all the unlocking exhaust ports (122) are buckled with a back sealing pressure guide buckle cover (108), and the upper and lower edges of the back sealing pressure guide buckle cover (108) are provided with air guide grooves (109).

4. An outdoor lithium battery UPS power supply according to claim 3, characterized in that: A one-way baffle guide slide (105) is fixedly mounted on each one-way baffle (106), and the one-way baffle guide slide (105) is slidably matched with the back sealing pressure guide buckle cover (108). A spring (107) is provided around the one-way baffle guide slide (105), and both ends of the spring (107) are fixedly matched with the one-way baffle (106) and the back sealing pressure guide buckle cover (108).

5. An outdoor lithium battery UPS power supply according to claim 4, characterized in that: The upper and lower surfaces of the battery pack support shell (101) are fixedly mounted with a driving plate (110), and three sliding cavities (112) are provided on the driving plate (110) and aligned with the limit pin sliding hole (102). An E-shaped gas pressure guide groove (111) is provided on one side of the driving plate (110) facing the battery pack support shell (101). The gas pressure guide groove (111) is used to connect the three sliding cavities (112) with the gas guide groove (109); a sealing seal is installed in the sliding cavity (112). The plug plate (116), the sealing piston plate (116) and the limit pin (117) are fixedly matched, and an unlocking pull block (114) is fixedly installed on each sealing piston plate (116); an elastic rubber pad limit strip (113) is fixedly installed on the side of the drive plate (110) away from the battery pack support shell (101), and an elastic rubber pad (115) is elastically provided between the elastic rubber pad limit strip (113) and the limit pin (117) for squeezing the limit pin (117) to move toward the battery pack shell (201).

6. An outdoor lithium battery UPS power supply according to claim 5, characterized in that: A shell buckle plate (121) is fixedly provided on the driving plate (110), and a shovel block limit block (119) is fixedly installed at a position of the sliding cavity (112) on each driving plate (110), and a shovel block (118) is overlapped and provided on the shovel block limit block (119), and the shovel block (118) is slidably matched with the driving plate (110), and the shovel block (118) is used to scoop up the unlocking pull block (114), wherein a groove is provided on the unlocking pull block (114), and an inclined surface is provided on the shovel block (118) that slidably matches the groove on the unlocking pull block (114), and an unlocking push-pull rod (120) is fixedly installed on each shovel block (118), and the unlocking push-pull rod (120) extends to the outside of the shell buckle plate (121) at one end away from the shovel block (118).

7. An outdoor lithium battery UPS power supply according to claim 6, characterized in that: The output ends of the six battery packs are electrically connected to the input ends of the inverter in parallel. Diodes are installed in series between the output ends of battery pack 1 to battery pack 5 and the input ends of the inverter. The output ends of battery pack 1 to battery pack 5 are all arranged in parallel with the electromagnetic coils of the corresponding relays KM1 to relay KM5.

8. An outdoor lithium battery UPS power supply according to claim 7, characterized in that: The normally closed contact of relay KM1 is arranged in series between the output end of battery pack 2 and relay KM2; the normally closed contacts of relay KM2 and relay KM1 are arranged in series between the output end of battery pack 3 and relay KM3; the normally closed contacts of relay KM3, relay KM2 and relay KM1 are arranged in series between the output end of battery pack 4 and relay KM4; the normally closed contacts of relay KM4, relay KM3, relay KM2 and relay KM1 are arranged in series between the output end of battery pack 5 and relay KM5; the normally closed contacts of relay KM5, relay KM4, relay KM3, relay KM2 and relay KM1 are arranged in series between the output end of battery pack 6 and the input end of the inverter.

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