A temperature regulating device for a lithium battery

Abstract

The present invention discloses a temperature regulating device for a lithium battery, which mainly relates to the technical field of lithium battery temperature regulation. The device comprises a shell, a heat insulation layer and a heat conducting plate are arranged inside the shell, a cooling water pipe is arranged between the heat conducting plate and the heat insulation layer, a water tank assembly is arranged between the heat insulation layer and the shell, the water tank assembly comprises a high-level water tank, a low-level water tank and a transfer box, the low-level water tank is connected to the transfer box, and the cooling water pipe is connected to the transfer box; the high-level water tank is connected to the transfer box, and a water pump assembly is further arranged between the low-level water tank, the high-level water tank and the transfer box; the present invention can regulate the temperature of a battery body and cool the battery body.

Description

Technical Field

[0001] The present invention mainly relates to the technical field of lithium battery temperature regulation, and in particular to a temperature regulation device for a lithium battery. Background Art

[0002] Lithium batteries are commonly used in daily life, such as lithium batteries in electric vehicles. Lithium batteries have the advantages of high energy density, long life and no memory effect. However, lithium batteries in electric vehicles still have the problem of high-temperature spontaneous combustion during use, especially in high-temperature environments such as summer. In summer, they are exposed to the sun or steamed in high temperatures, which can easily cause spontaneous combustion or explosion during use. Therefore, it is particularly important to regulate the temperature of the battery. Ordinary cooling is generally done by air cooling, but air cooling blows out hot air in high-temperature environments, and the cooling effect is not good. Some devices also use water cooling, using the principle of compressor for cold water cooling, but if the compressor is too small, the cooling effect is not good. If the compressor is too large, it is extremely inconvenient and unlikely to be implemented for electric vehicles. In addition, many existing devices have to wait for a certain period of time for cooling and cannot cool down quickly. Summary of the Invention

[0003] (1) Technical issues to be resolved

[0004] In view of the above problems, the present invention needs to provide a temperature regulating device for a lithium battery, which can regulate the temperature of the battery body and cool the battery body.

[0005] (2) Technical solution

[0006] In response to the above technical problems, the present invention provides a temperature regulation device for a lithium battery, comprising a shell, an opening at the top of the shell, an insulation layer provided inside the shell, and the space between the insulation layer and the shell being used to set a water tank assembly; a heat conducting plate is provided with the same size as the shell opening, a cooling water pipe is provided between the heat conducting plate and the insulation layer, and the heat conducting plate is used to place the battery body; the water tank assembly comprises a high-level water tank, a low-level water tank, and a transfer tank, the low-level water tank is connected to the transfer tank, and the cooling water pipe is connected to the transfer tank; the high-level water tank is connected to the transfer tank, and a water pump assembly is also provided between the low-level water tank, the high-level water tank and the transfer tank.

[0007] Furthermore, the transfer box is provided with two upper and lower separated chambers, the upper chamber is connected to the high-level water tank; the lower chamber is divided into two axially symmetrical left and right small chambers, and the two small chambers are connected to the low-level water tank.

[0008] Furthermore, the high-level water tank is connected to one side of the upper chamber of the transfer box by a high-level water outlet pipe, and a high-level regulating pipe is fixedly provided on the other side of the upper chamber of the transfer box, and the high-level regulating pipe is fixedly connected to the high-level pump pipe, and the high-level pump pipe is connected to the water pump assembly; an regulating assembly is provided on the high-level regulating pipe; a high-level return pipe is provided on the other side of the high-level water tank to connect with the water pump assembly.

[0009] Furthermore, one of the two small chambers of the transfer box is connected to the low-level water outlet pipe, which is fixedly connected to the low-level water tank. The other end of the low-level water tank is provided with a low-level pump pipe connected to the water pump assembly, and a low-level return pipe is provided between the other small chamber of the transfer box and the water pump assembly.

[0010] Furthermore, the water pump assembly includes a high-level water pump and a low-level water pump. The high-level water pump is arranged on the insulation layer and is at the same height as the high-level water tank. The high-level water pump is connected to the high-level return pipe and the high-level pump pipe; the low-level water pump is at the same height as the low-level water tank. The low-level water pump is connected to the low-level return pipe and the low-level pump pipe. The high-level water pump and the low-level water pump are driven by a pulley assembly.

[0011] Furthermore, the pulley assembly includes a cooling motor, which is fixedly mounted on the thermal insulation layer. A motor pulley is fixedly connected to the output shaft of the cooling motor. An adjusting pulley is fixedly mounted on the impeller of the high-position water pump and the impeller of the low-position water pump. A connecting belt is provided on the two adjusting pulleys and one motor pulley.

[0012] Furthermore, the low-level water tank is provided with a low water level, the high-level water tank is provided with a high water level, a high water tank display screen is provided on one side of the high water level, and a low water tank display screen is provided on one side of the low water level; both the high-level water tank and the low-level water tank are provided with water volume scales and sensors.

[0013] Furthermore, the adjustment component includes an adjustment knob, which is rotatably mounted on the outer shell and exposed outside the outer shell. An adjustment rod is rotatably arranged below the adjustment knob and located in the high-position adjustment tube. A friction belt is provided on the front end of the adjustment knob and the adjustment rod; a spiral groove is provided on the outer surface of the adjustment rod, and the adjustment needle is slidably mounted in the high-position adjustment tube.

[0014] Furthermore, the adjusting needle is divided into two sections, the first section is a solid cone, and the second section is a hollow cylinder. A cylindrical head is inserted and fixedly connected to the cylinder, and a ring is fixedly connected to the cylindrical head. The ring is sleeved on the outer surface of the high-position adjusting tube and slides on the outer surface of the high-position adjusting tube; the cylindrical head slides in cooperation with the spiral groove on the adjusting rotary rod, and the high-position adjusting tube is also provided with a special-shaped groove, and the cylindrical head slides in the special-shaped groove.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The present invention is provided with an outer shell, an insulation layer, a water tank assembly, a heat conducting plate, and a cooling water pipe, which can be used to place the battery body, and can detect the temperature of the battery body in real time, and can quickly cool the battery body; 2. The water tank assembly of the present invention includes a high-level water tank, a low-level water tank, a transfer box, and a water pump assembly. The cooperation of the water pump assembly and the high-level water tank, the low-level water tank, and the transfer box is used to make the water in the cooling water pipe flow, and the water in the high-level water tank is used to cool the hot water in the cooling water pipe, thereby cooling the battery body. The present invention also has a major advantage. When facing high temperatures, refrigerated or frozen ice water can be poured into the high-level water tank, thereby speeding up the cooling time and achieving rapid cooling; 3. The high-level water tank and the low-level water tank of the present invention can use local materials to supplement the water required for cooling, and the operation is simple; the adjustment assembly of the present invention can adjust the water flow rate in the high-level water tank, thereby changing the speed of cooling. The higher the flow rate, the faster the cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 Schematic diagram of the battery body of the present invention.

[0018] Figure 3 This is a schematic diagram of the present invention after the battery body is hidden.

[0019] Figure 4 This is a schematic diagram of the hidden battery body and shell of the present invention.

[0020] Figure 5 It is a partial first angle schematic diagram of the present invention.

[0021] Figure 6 It is a partial second angle schematic diagram of the present invention.

[0022] Figure 7 This is a bottom view of the cooling water pipe and transfer box of the present invention.

[0023] Figure 8 It is a side view of the transfer box of the present invention.

[0024] Figure 9 for Figure 8 Cross-sectional view at AA in the middle.

[0025] Figure 10 It is a partial third angle schematic diagram of the present invention.

[0026] Figure 11 for Figure 10 Cross-sectional view at the middle BB.

[0027] Figure 12 for Figure 11Cross-sectional view at CC.

[0028] Figure 13 This is a diagram showing the position of the special-shaped groove of the present invention.

[0029] Reference numerals: 1-cooling mechanism; 2-battery body; 101-housing; 102-temperature display screen; 103-adjustment symbol; 104-heat conducting plate; 105-high water level; 106-high water tank display screen; 107-high water outlet pipe; 108-low water outlet pipe; 109-alarm light; 110-low water tank display screen; 111-low water level; 112-water volume scale; 113-high water tank; 114-high water outlet pipe; 115-transfer box; 116-high regulating pipe; 117-low water outlet pipe; 11 8- low-level water tank; 119- high-level pump pipe; 120- cooling water pipe; 121- thermal insulation layer; 122- cooling motor; 123- low-level pump pipe; 124- motor pulley; 125- adjusting pulley; 126- low-level water pump; 127- connecting belt; 128- low-level return pipe; 129- high-level return pipe; 130- high-level water pump; 131- adjusting knob; 132- friction belt; 133- adjusting lever; 134- adjusting needle; 135- ring; 136- cylindrical head; 137- special-shaped groove. DETAILED DESCRIPTION

[0030] The present invention will be further described below with reference to specific embodiments. The present invention is explained through the exemplary embodiments and descriptions of the present invention, but is not intended to limit the present invention.

[0031] Example: Figures 1-13 A temperature regulating device for a lithium battery shown in the figure includes a cooling mechanism 1, which includes a shell 101 with an opening at the top. An insulating layer 121 is provided inside the shell 101, and the space between the insulating layer 121 and the shell 101 is used to set a water tank assembly; a heat conducting plate 104 is provided with the same size as the opening of the shell 101, a cooling water pipe 120 is provided between the heat conducting plate 104 and the insulating layer 121, and the heat conducting plate 104 is used to place a battery body 2; a handle is provided on the top of the battery body 2 for easy picking, and two electrodes are provided at the bottom of the battery body 2. Openings are provided on the heat conducting plate 104 and the bottom of the shell 101 to place the electrodes of the battery body 2, and a circuit is also provided for use in electric vehicles.

[0032] The transfer box 115 is provided with two upper and lower separated chambers. The middle partition plate uses a metal partition to form a connection between the upper chamber and the high-level water tank 113; the lower chamber is divided into two axially symmetrical left and right small chambers, and the two small chambers are connected to the low-level water tank 118.

[0033] The high-level water tank 113 is connected to one side of the upper chamber of the transfer box 115 by a high-level water outlet pipe 114. A high-level regulating pipe 116 is fixedly provided on the other side of the upper chamber of the transfer box 115. The high-level regulating pipe 116 is fixedly connected to the high-level pump pipe 119, and the high-level pump pipe 119 is connected to the water pump assembly; an regulating assembly is provided on the high-level regulating pipe 116; a high-level return water pipe 129 is provided on the other side of the high-level water tank 113 to communicate with the water pump assembly.

[0034] Among the two small chambers of the transfer box 115, one of the small chambers is connected to the low-level water outlet pipe 117, and the low-level water outlet pipe 117 is fixedly connected to the low-level water tank 118. The other end of the low-level water tank 118 is provided with a low-level pump pipe 123 to be connected to the water pump assembly. A low-level return pipe 128 is provided between the other small chamber of the transfer box 115 and the water pump assembly.

[0035] Both ends of the cooling water pipe 120 are respectively connected to the two small chambers of the transfer box 115 . The cooling water pipe 120 is laid in the housing 101 after being bent multiple times.

[0036] The water pump assembly includes a high-level water pump 130 and a low-level water pump 126. The high-level water pump 130 is arranged on the insulation layer 121 and is at the same height as the high-level water tank 113. The high-level water pump 130 is connected to the high-level return pipe 129 and the high-level pump pipe 119. The low-level water pump 126 is at the same height as the low-level water tank 118. The low-level water pump 126 is connected to the low-level return pipe 128 and the low-level pump pipe 123. The high-level water pump 130 and the low-level water pump 126 are driven by a pulley assembly; the high-level water pump 130 and the low-level water pump 126 both use pumps in the existing technology.

[0037] The pulley assembly includes a cooling motor 122, which is fixedly mounted on the insulation layer 121. A motor pulley 124 is fixedly connected to the output shaft of the cooling motor 122. An adjusting pulley 125 is fixedly mounted on the impellers of the high-level water pump 130 and the low-level water pump 126. A connecting belt 127 is provided on the two adjusting pulleys 125 and one motor pulley 124.

[0038] The low-level water tank 118 is provided with a low water level 111, which is composed of a vertical pipe extending to the outside of the outer shell 101 and a sealing cover on the outside of the pipe. The high-level water tank 113 is provided with a high water level 105. The high water level 105 has the same structure and function as the low water level 111. A high water tank display screen 106 is provided on one side of the high water level 105, and a low water tank display screen 110 is provided on one side of the low water level 111; both the high-level water tank 113 and the low-level water tank 118 are provided with water volume scales 112 and sensors.

[0039] The adjustment component includes an adjustment knob 131, which is rotatably mounted on the outer shell 101 and exposed outside the outer shell 101. An adjustment rod 133 is rotatably arranged below the adjustment knob 131 and located in the high-position adjustment tube 116. The front ends of the adjustment knob 131 and the adjustment rod 133 are sleeved with a friction belt 132. The front ends of the adjustment knob 131 and the adjustment rod 133 are both provided with friction force, forming a friction transmission with the friction belt 132; a spiral groove is provided on the outer surface of the adjustment rod 133, and an adjustment needle 134 is slidably mounted in the high-position adjustment tube 116.

[0040] One side of the adjustment knob 131 is marked with an adjustment symbol 103 , and the other side is provided with a temperature display screen 102 . A temperature sensor is provided in the housing 101 , which can sense the temperature of the battery body 2 and display the temperature on the temperature display screen 102 .

[0041] The adjusting needle 134 is divided into two sections, the first section is a solid cone, and the second section is a hollow cylinder. A cylindrical head 136 is inserted and fixedly connected to the cylinder, and a ring 135 is fixedly connected to the cylindrical head 136. The ring 135 is sleeved on the outer surface of the high-position adjusting tube 116 and slides on the outer surface of the high-position adjusting tube 116; the cylindrical head 136 slides in cooperation with the spiral groove on the adjusting rotary rod 133, and the high-position adjusting tube 116 is also provided with a special-shaped groove 137, and the cylindrical head 136 slides in the special-shaped groove 137.

[0042] A temperature monitor is also provided in the housing 101, and an alarm light 109 is used to give an alarm when the temperature is too high.

[0043] A high outlet pipe 107 is provided on the high water tank 113, and a low outlet pipe 108 is provided on the low water tank 118 for use in cleaning and waterproofing. A vent is also provided on the side of the housing 101 for auxiliary heat dissipation.

[0044] A switch is provided on the vehicle, and the switch controls the start or shut down of the cooling motor 122 , and the cooling motor 122 is powered by the battery body 2 .

[0045] The working principle of the present invention is as follows: water is added to the high water tank 113 and the low water tank 118 from the high water level 105 and the low water level 111 respectively, and then the sealing cover is covered, and the battery body 2 is placed in the shell 101 for normal use. If the temperature is too high in the summer, the battery is exposed to the sun or in a high temperature environment for a long time, it is very likely to explode. At this time, after knowing the temperature through the temperature display screen 102, press the switch to start the cooling motor 122.

[0046] At the same time, manually turn the adjusting knob 131, the adjusting knob 131 drives the adjusting rod 133 to rotate, and the adjusting rod 133 drives the adjusting needle 134 to slide, adjusting the size of the connecting port of the high-level pump pipe 119 and the high-level regulating pipe 116, and then adjusting the amount of water. When the cooling motor 122 is started, the water in the cooling water pipe 120, the low-level water outlet pipe 117, and the low-level water tank 118 will be drawn. The water passes through the low-level return pipe 128 to the small chamber below the transfer box 115 that is connected to the low-level return pipe 128. At the same time, when the cooling motor 122 is working, the water in the high-level water tank 113 is drawn through the high-level water outlet pipe 114, the upper chamber of the transfer box 115, the high-level regulating pipe 116, and the high-level pump pipe 119 to reach the high-level water tank 113 again.

[0047] When the water in the high-level water tank 113 enters the transfer box 115 from the high-level water outlet pipe 114, it can cool the water in the small chamber below the transfer box 115 that is connected to the low-level return water pipe 128. This is because when the hot water is in the transfer box 115, the heat is transferred to the metal partition, and the entry of cold water takes away the heat. The cooled water then enters the cooling water pipe 120 to cool the surrounding area of ​​the battery body 2. When the water continues to flow out of the cooling water pipe 120 and reaches the small chamber connected to the low-level water outlet pipe 117, it can also be cooled by the water in the chamber above the transfer box 115, thereby achieving the effect of lowering the temperature of the battery body 2.

[0048] Turning the adjustment knob 131 can affect the cooling water flow rate inside the high-level adjustment tube 116. The higher the flow rate, the faster the temperature drops, and the lower the final displayed temperature. No further adjustment is required until the temperature drops to the normal range. When the heat generated during riding is too high, an alarm will sound on the surface of the equipment to prompt personnel to take measures. When the water level in the water tank is insufficient, you can use local materials to add water yourself. You can add refrigerated or frozen water to speed up the cooling process.

[0049] Any matters not described in the present invention are applicable to the prior art.

Claims

1. A temperature regulating device for a lithium battery, comprising a housing (101), characterized in that: The top of the shell (101) is open, and a heat insulating layer (121) is provided inside the shell (101). The space between the heat insulating layer (121) and the shell (101) is used to set a water tank assembly; a heat conducting plate (104) of the same size as the opening of the shell (101) is provided, and a cooling water pipe (120) is provided between the heat conducting plate (104) and the heat insulating layer (121). The heat conducting plate (104) is used to place the battery body (2); the water tank assembly includes a high-level water tank (113), a low-level water tank (118), and a transfer box (115), and the low-level water tank (118) is connected to the transfer box (115); the high-level water tank (113) is connected to the transfer box (115), and a water pump assembly is further provided between the low-level water tank (118), the high-level water tank (113), and the transfer box (115); The transfer box (115) is provided with two upper and lower chambers, the upper chamber is connected to the high-level water tank (113); the lower chamber is further divided into two axially symmetrical left and right small chambers, the two small chambers are connected to the low-level water tank (118), and the two ends of the cooling water pipe (120) are respectively connected to the two small chambers of the transfer box (115); The high-level water tank (113) is connected to one side of the upper chamber of the transfer box (115) by means of a high-level water outlet pipe (114); a high-level regulating pipe (116) is fixedly provided on the other side of the upper chamber of the transfer box (115); the high-level regulating pipe (116) is fixedly connected to the high-level pump pipe (119); the high-level pump pipe (119) is connected to the water pump assembly; a regulating assembly is provided on the high-level regulating pipe (116); a high-level return pipe (129) is provided on the other side of the high-level water tank (113) to connect to the water pump assembly; One of the two small chambers of the transfer box (115) is connected to a low-level water outlet pipe (117), which is fixedly connected to a low-level water tank (118). The other end of the low-level water tank (118) is provided with a low-level pump pipe (123) connected to the water pump assembly. A low-level return pipe (128) is provided between the other small chamber of the transfer box (115) and the water pump assembly. The water pump assembly includes a high-level water pump (130) and a low-level water pump (126). The high-level water pump (130) is arranged on the insulation layer (121) and is at the same height as the high-level water tank (113). The high-level water pump (130) is connected to the high-level return pipe (129) and the high-level pump pipe (119). The low-level water pump (126) is at the same height as the low-level water tank (118). The low-level water pump (126) is connected to the low-level return pipe (128) and the low-level pump pipe (123). The high-level water pump (130) and the low-level water pump (126) are driven by a pulley assembly. The adjustment assembly includes an adjustment knob (131), the adjustment knob (131) is rotatably mounted on the housing (101) and exposed outside the housing (101), an adjustment rod (133) is rotatably arranged below the adjustment knob (131) and located in the high-position adjustment tube (116), and a friction belt (132) is provided at the front end of the adjustment knob (131) and the adjustment rod (133); a spiral groove is provided on the outer surface of the adjustment rod (133), and an adjustment needle (134) is slidably mounted in the high-position adjustment tube (116); The adjusting needle (134) is divided into two sections, the first section is a solid cone, and the second section is a hollow cylinder. A cylindrical head (136) is inserted and fixedly connected to the cylinder, and a ring (135) is fixedly connected to the cylindrical head (136). The ring (135) is sleeved on the outer surface of the high-position adjusting tube (116) and slides on the outer surface of the high-position adjusting tube (116); the cylindrical head (136) is slidably matched with the spiral groove on the adjusting rotary rod (133), and the high-position adjusting tube (116) is also provided with a special-shaped groove (137), and the cylindrical head (136) slides in the special-shaped groove (137).

2. A temperature regulating device for a lithium battery according to claim 1, characterized in that: The pulley assembly includes a cooling motor (122), the cooling motor (122) is fixedly mounted on the heat insulation layer (121), the output shaft of the cooling motor (122) is fixedly connected to a motor pulley (124), an adjusting pulley (125) is fixedly mounted on the impellers of the high-position water pump (130) and the low-position water pump (126), and a connecting belt (127) is sleeved on the two adjusting pulleys (125) and the motor pulley (124).

3. The temperature regulating device for a lithium battery according to claim 1, characterized in that: The low-level water tank (118) is provided with a low water level (111), the high-level water tank (113) is provided with a high water level (105), a high water tank display screen (106) is provided on one side of the high water level (105), and a low water tank display screen (110) is provided on one side of the low water level (111); and water volume scales (112) and sensors are provided on both the high-level water tank (113) and the low-level water tank (118).

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