Charging device and liquid-cooled cable assembly

Abstract

A charging device and a liquid-cooled cable assembly are disclosed. The liquid-cooled cable assembly includes a liquid-cooled cable and a charging gun. The liquid-cooled cable includes a first insulating tube, a second insulating tube, a wrapping tape, a wire body, and a sheath. The first insulating tube has a first channel. The second insulating tube includes an insulating layer, a second channel, a power conductor, and an isolator. The isolator is disposed outside the power conductor. The wrapping tape covers the first and second insulating tubes. The wire body is located inside the wrapping tape. The sheath covers the wrapping tape. The charging gun includes a gun connector, which includes a first water jacket, a first connector portion, a first sleeve portion, and a first terminal portion. The first water jacket includes a first communicating space, a second communicating space, and a gun connecting channel. The first connector portion is connected to the first water jacket. The first sleeve portion is connected to the first water jacket. The first terminal portion is connected to the first water jacket.

Description

Technical Field

[0001] This invention relates to a liquid-cooled cable assembly and a charging device, particularly a liquid-cooled cable assembly and a charging device. Background Technology

[0002] In today's society, with the development of civilization, more and more products require charging, and with technological advancements, electric vehicles are gradually replacing gasoline vehicles. However, in current technology, most electric vehicles require charging stations for charging. During the charging process where the charging gun is inserted into the electric vehicle, the entire device is prone to overheating, posing a safety hazard. This is especially true for the cable and its connection points, which are particularly susceptible to overheating during charging. Furthermore, the charging gun connection points may wear down during repeated use, reducing charging efficiency and increasing the risk of overheating, necessitating replacement. Some high-voltage fast charging guns on the market feature a detachable design, such as a spiral, between the cable / charging gun and the connection points; however, this design also creates a risk of overheating at the contact surfaces. Summary of the Invention

[0003] In view of this, according to some embodiments, a liquid-cooled cable assembly is proposed, comprising a liquid-cooled cable and a charging gun. The liquid-cooled cable has a gun end and a post end, and includes a first insulating tube, a second insulating tube, a wrapping tape, a wire body, and a sheath. The first insulating tube has a first channel. The second insulating tube includes an insulating layer, a second channel, a power conductor, and an isolator. The second channel is located within the insulating layer. The power conductor is located within the second channel. The isolator is disposed outside the power conductor to isolate the power conductor from the insulating layer. The wrapping tape covers the first insulating tube and the second insulating tube. The wire body is located within the wrapping tape and fills the space between the first insulating tube and the second insulating tube. The sheath covers the outside of the wrapping tape. The charging gun includes a gun connector connected to the gun end, and the gun connector includes a first water jacket, a first connector portion, a first sleeve portion, and a first terminal portion. The first water jacket includes a first communicating space, a second communicating space, and a gun connecting channel, the gun connecting channel connecting the first communicating space and the second communicating space. A first connector is connected to a first water jacket to connect to a first communicating space, wherein a first insulating tube is fitted onto the first connector to connect a first channel to the first communicating space. A first sleeve is connected to the first water jacket to connect to a second communicating space. A first terminal is connected to the first water jacket, wherein a second insulating tube is fitted onto the first sleeve, and a power conductor is electrically connected to the first terminal.

[0004] In some embodiments, the gun connection channel is obliquely connected to the first connecting space and the second connecting space and is at an inclined angle.

[0005] In some embodiments, the gun connector further includes a first seal, and the gun connection channel further includes a first opening, the first seal being used to seal the first opening.

[0006] In some embodiments, the gun connector further includes a first waterproof ring gasket disposed between the first connector portion and the first water jacket.

[0007] In some embodiments, the gun connector further includes a first C-shaped retaining ring and a first waterproof ring. The first C-shaped retaining ring is pressed against the first terminal portion and the power conductor, and the first waterproof ring is sleeved on the first terminal portion, with the outer side of the first waterproof ring contacting the first water jacket.

[0008] In some embodiments, the gun connector further includes a first back support ring and two second waterproof rings, wherein the first sleeve portion further includes a first flange, one of the second waterproof rings is sleeved on the first sleeve portion and abuts against the first flange, and an insulating layer is sleeved on the first sleeve portion and one of the second waterproof rings, while the first back support ring and the other second waterproof ring are sleeved on the first sleeve portion and located outside the insulating layer.

[0009] In some embodiments, the first water jacket further includes a first upper top surface and a first lower bottom surface, the first water jacket gradually narrows from the first lower bottom surface to the first upper top surface, and the first upper top surface and the first lower bottom surface are arc-shaped.

[0010] In some embodiments, the second connected space is larger than the first connected space.

[0011] In some embodiments, the gun connector further includes a first replacement cap, which is detachably disposed on the first terminal portion.

[0012] In some embodiments, the insulating element is an insulating material, and the heat deformation temperature of the insulating element is higher than that of the insulating layer.

[0013] In some embodiments, the pitch of the isolator is between 15 mm and 25 mm.

[0014] In some embodiments, the power conductor has an outer diameter R1, the isolator has an outer diameter R2, and the second insulating tube has an inner diameter R4, which conforms to the following relationship [R4-(R1+2R2)] / 2=0.5~0.8.

[0015] In some embodiments, the power conductor has an outer diameter R1, the isolator has an outer diameter R2, and the second insulating tube has an inner diameter R4, which conform to the following relationship (R4 2 -R1 2 -R2 2 π / 4 = 70 to 100.

[0016] According to some embodiments, a charging device is also proposed, comprising a liquid-cooled cable assembly, a charging pile, a connecting pipe, and a pile connector. The liquid-cooled cable assembly is as described above. The charging pile comprises a cooling module and a charging module. The cooling module includes an outlet and an inlet, the inlet being connected to the pile end of the liquid-cooled cable and communicating with a first channel. The charging module is electrically connected to the cooling module. One end of the connecting pipe is connected to the outlet. The pile connector is electrically connected to the charging module and includes: a second water jacket, a second connector portion, a second sleeve portion, and a second terminal portion. The second water jacket includes a third communicating space, a fourth communicating space, and a pile connecting channel, the pile connecting channel communicating with the third communicating space and the fourth communicating space. The second connector portion is connected to the second water jacket to communicate with the third communicating space, wherein the other end of the connecting pipe is sleeved on the second connector portion. The second sleeve portion is connected to the second water jacket to communicate with the fourth communicating space. The second terminal portion is connected to the second water jacket, wherein a second insulating tube is sleeved on the second sleeve portion, and a power conductor is electrically connected to the second terminal portion.

[0017] In some embodiments, the pile-connecting channel is obliquely connected to the third and fourth connecting spaces and is at an inclined angle.

[0018] In some embodiments, the pile joint further includes a second seal, and the pile connection channel further includes a second opening, the second seal being used to seal the second opening.

[0019] In some embodiments, the pile joint further includes a second waterproof ring gasket disposed between the second joint portion and the second water jacket.

[0020] In some embodiments, the pile connector further includes a second C-shaped retaining ring and a third waterproof ring. The second C-shaped retaining ring is pressed against the second terminal portion and the power conductor, and the third waterproof ring is sleeved on the second terminal portion, with the outer side of the third waterproof ring contacting the second water jacket.

[0021] In some embodiments, the pile connector further includes a second back support ring and two fourth waterproof rings, and the second sleeve portion further includes a second flange, wherein one of the fourth waterproof rings is sleeved on the second sleeve portion and abuts against the first flange, and an insulating layer is sleeved on the first sleeve portion and one of the fourth waterproof rings, while the second back support ring and the other fourth waterproof ring are sleeved on the first sleeve portion and located outside the insulating layer.

[0022] In some embodiments, the second water jacket further includes a second upper top surface and a second lower bottom surface, the second water jacket gradually narrows from the second lower bottom surface to the second upper top surface, and the second upper top surface and the second lower bottom surface are arc-shaped.

[0023] In some embodiments, the fourth connected space is larger than the third connected space.

[0024] The following detailed description of the features and advantages of the present invention in the embodiments is sufficient to enable those skilled in the art to understand the technical content of the present invention and implement it accordingly. Based on the disclosure of this specification, the claims and the drawings, those skilled in the art can easily understand the relevant objects and advantages of the present invention. Attached Figure Description

[0025] Figure 1 An exploded view of the gun connector is provided based on some embodiments.

[0026] Figure 2 A cross-sectional view of the gun connector is provided based on some embodiments.

[0027] Figure 3 A cross-sectional view of a liquid-cooled cable is shown based on some embodiments.

[0028] Figure 4 The following is a schematic diagram of the appearance of the charging device according to some embodiments.

[0029] Figure 5 According to some embodiments, this is a side view of the gun connector viewed from the direction of the first terminal portion.

[0030] Figure 6 The following is a block diagram of a charging station based on some embodiments.

[0031] Figure 7 This is a schematic diagram of the charging device and coolant flow according to some embodiments.

[0032] Figure 8 An exploded view of the pile joint is provided based on some embodiments.

[0033] Figure 9 A cross-sectional view of the pile joint is provided based on some embodiments.

[0034] Figure 10 According to some embodiments, this is a side view of the pile joint viewed from the direction of the second terminal portion.

[0035] Explanation of reference numerals and component names in the attached drawings:

[0036] 100: Liquid-cooled cable

[0037] 110: Gunpoint

[0038] 120: Pile tip

[0039] 130: First insulating tube

[0040] 130a: First Channel

[0041] 140: Second insulating tube

[0042] 141: Insulation layer

[0043] 140a: Second Channel

[0044] 142: Power conductor

[0045] 143: Isolation component

[0046] 150: Bag strap

[0047] 160: Line

[0048] 170: Covering body

[0049] 180: Signal line

[0050] 190: Ground wire

[0051] 200: Charging gun

[0052] 210: Gun connector

[0053] 211: First Water Jacket

[0054] 211a: First connected space

[0055] 211b: Second connected space

[0056] 211c: Gun Company Passage

[0057] 211c1: First opening

[0058] 212: First joint

[0059] 213: First sleeve section

[0060] 213a: First flange

[0061] 214: First terminal section

[0062] 2111a: First top surface

[0063] 2111b: First bottom surface

[0064] 215: First seal

[0065] 216: First waterproof ring gasket

[0066] 217: First back support ring

[0067] 218a: Second waterproof ring

[0068] 218b: Second waterproof ring

[0069] 219: First C-shaped buckle

[0070] 219a: First Gap

[0071] 220: First waterproof ring

[0072] 221: First replacement cap

[0073] 222: Reed

[0074] 300: Charging station

[0075] 310: Cooling Module

[0076] 311: Inlet

[0077] 312: Outlet

[0078] 320: Charging Module

[0079] 400: Pile joint

[0080] 411: Second water jacket

[0081] 411a: Third connected space

[0082] 411b: Fourth Connected Space

[0083] 411c: Pile-connected passage

[0084] 411c1: Second opening

[0085] 412: Second joint

[0086] 413: Second sleeve section

[0087] 413a: Second flange

[0088] 414: Second terminal section

[0089] 4111a: Second upper top surface

[0090] 4111b: Second bottom surface

[0091] 415: Second seal

[0092] 416: Second waterproof ring gasket

[0093] 417: Second back support ring

[0094] 418a: Fourth waterproof ring

[0095] 418b: Fourth waterproof ring

[0096] 419: Second C-shaped buckle

[0097] 419a: Second Gap

[0098] 420: Third waterproof ring

[0099] 500: Connecting pipe

[0100] d: pitch

[0101] R1: outer diameter

[0102] R2: Outer diameter

[0103] R3: inner diameter

[0104] R4: inner diameter. Detailed Implementation

[0105] Please see Figures 1 to 4 , Figure 1 An exploded view of the gun connector is provided based on some embodiments. Figure 2 A cross-sectional view of the gun connector is provided based on some embodiments. Figure 3 A cross-sectional view of a liquid-cooled cable is shown based on some embodiments. Figure 4 This is a schematic diagram of the appearance of a charging device according to some embodiments. The liquid-cooled cable assembly includes a liquid-cooled cable 100 and a charging gun 200.

[0106] Please see Figure 3 and Figure 4 The liquid-cooled cable 100 has a gun end 110 and a post end 120. Accordingly, the liquid-cooled cable 100 includes a first insulating tube 130, a second insulating tube 140, a wrapping tape 150, a wire body 160, and a sheath 170.

[0107] The first insulating tube 130 has a first channel 130a. The first insulating tube 130 is a return tube and can be made of a waterproof material, such as PP. Conversely, the second insulating tube 140 is a liquid inlet tube. In some embodiments, the first insulating tube 130 can also be made of solvent-resistant materials such as TPE, XLPE, XLPO, or Nylon. Because the first insulating tube 130 has the first channel 130a, liquid, such as coolant, can flow through it. In one embodiment, the coolant is, for example, but not limited to, esters, which have insulating and non-conductive properties and heat dissipation effects. Furthermore, esters will not react with the first insulating tube 130, the second insulating tube 140, or other conductors. In some embodiments, the first insulating tube 130 is a liquid inlet tube, and the second insulating tube 140 is a return tube.

[0108] The second insulating tube 140 includes an insulating layer 141, a second channel 140a, a power conductor 142, and an insulating member 143. In some embodiments, the second insulating tube 140 is a liquid inlet tube, which may be made of thermosetting polymer materials such as XLPE, XLPO, and EPR. Here, since the second channel 140a is located within the insulating layer 141, liquid, such as coolant, can flow through the second insulating tube 140. The power conductor 142 is located within the second channel 140a.

[0109] In some embodiments, the power conductor 142 may be made of copper stranded wire, which may be a single strand or multiple strands twisted together. The diameter of a single wire is preferably 0.18mm-0.3mm (e.g., 0.2mm, 0.25mm, 0.27mm), and the cross-sectional area of ​​the power conductor is preferably 16mm². 2 -50mm 2 (For example, 20mm) 2 30mm 2 40mm 2 The outer diameter of the power conductor is preferably 6mm-10mm (e.g., 7mm, 8mm, 9mm). Based on this value, the power conductor 142 can not only improve the current load capacity, but also increase its flexibility and service life.

[0110] An isolator 143 is disposed outside the power conductor 142 to isolate the power conductor 142 from the insulating layer 141. In some embodiments, the isolator 143 is made of solvent-resistant materials such as TPE, XLPE, XLPO, and Nylon, or a combination of a flexible and easily shaped non-conductive material and the aforementioned polymeric materials. In other embodiments, the isolator 143 is made of a non-conductive material or a low thermal conductivity material. Therefore, when the isolator 143 is disposed outside the power conductor 142 and located between the power conductor 142 and the insulating layer 141, it can prevent the electrical or thermal conduction of the power conductor 142 to the insulating layer 141. In some embodiments, the isolator 143 is disposed outside the power conductor 142 in a wound manner. Further, the isolator 143 is wound along the outer diameter of the power conductor 142. In some embodiments, such as Figure 1 As shown, if the twist pitch d (distance between each turn after winding) of the isolator 143 is too short, resulting in too many turns, it will affect the coolant flow rate. If the twist pitch d is too large, resulting in too few turns, the power conductor 142 may directly contact the insulation layer 141 when the liquid-cooled cable 100 is bent. In one embodiment, the twist pitch d of the isolator 143 is in the range of 15mm to 35mm, for example, 20mm, 25mm, or 30mm. Therefore, within this range, the situation where the power conductor 142 directly contacts the insulation layer 141 when the liquid-cooled cable 100 is bent can be avoided.

[0111] In some embodiments, the heat deflection temperature (HDT) of the insulating member 143 is higher than that of the insulating layer 141. Therefore, during charging, the high temperature of the power conductor 142 will prevent the insulating member 143 and the insulating layer 141 from melting, thus avoiding coolant leakage. Here, the insulating member 143 is, for example, but not limited to, thermosetting polymer materials such as XLPE, XLPO, and EPR.

[0112] In addition, the isolator 143 can prevent the power conductor 142 from directly contacting the insulation layer 141. Since the isolator 143 is made of insulating material with poor thermal conductivity, in the presence of coolant, the isolator 143 needs to be made of a material with a higher heat resistance temperature because it is in direct contact with the power conductor 142, while the insulation layer 141 can be made of a material with a lower heat resistance temperature.

[0113] In some embodiments, the liquid-cooled cable 100 includes two first insulating tubes 130 and two second insulating tubes 140. When the charging device has a positive and a negative terminal, one first insulating tube 130 and one second insulating tube 140 correspond to the positive terminal. The other first insulating tube 130 and the other second insulating tube 140 correspond to the negative terminal.

[0114] The wrapping tape 150 covers the first insulating tube 130 and the second insulating tube 140. In some embodiments, the wrapping tape 150 is made of non-woven fabric, which is used to initially fix the wiring within the liquid-cooled cable 100 and maintain its shape before being covered by the sheath 170 (described in detail later). In other embodiments, the wrapping tape 150 covers a wire 160 (described in detail later), thereby further covering the wire 160 to shape it. Furthermore, the wrapping tape 150 prevents the wire 160 from becoming loose.

[0115] The thread 160 is located within the wrapping tape 150 and fills the space between the first insulating tube 130 and the second insulating tube 140. The sheath 170 covers the outside of the wrapping tape 150. In some embodiments, the thread 160, for example but not limited to PP tape, fills the wrapping tape 150 and occupies the space formed within the wrapping tape 150. Accordingly, the first insulating tube 130 and the second insulating tube 140 will be surrounded by the thread 160. Furthermore, through the filling of the thread 160, when the first insulating tube 130 and the second insulating tube 140 are covered by the sheath 170 (or wrapping tape 150), the filling of the thread 160 will prevent the first insulating tube 130 and the second insulating tube 140 from moving arbitrarily within the sheath 170 (or wrapping tape 150). In some embodiments, the sheath 170 is made of materials such as, but not limited to, CR, TPU, LSHF, TPE, etc.

[0116] In some embodiments, the liquid-cooled cable 100 further includes signal lines 180 for transmitting electrical signals. In some embodiments, the signal lines 180 are made of a conductor (e.g., copper wire) or optical fiber. For example, the signal lines 180 may be braided from the inside out with a conductor, an insulator, and a tinned copper mesh. In one embodiment, there are 14 signal lines 180, and 6 of these signal lines 180 may be additionally bundled together with an insulator (e.g., ...). Figure 3As shown, the signal line 180 below). Alternatively, two signal lines 180 can be bundled together using an insulator (such as...). Figure 3 As shown, the signal line above is 180°.

[0117] In other embodiments, the liquid-cooled cable 100 further includes a ground wire 190, which may be made of a conductor (e.g., copper wire) and covered with an insulator on its outermost layer. Here, the insulator is made of materials such as, but not limited to, PE, XLPE, EPR, PVC, XLPO, etc. Accordingly, the wire body 160 is located within the wrapping tape 150 and fills the space between the signal wire 180 and the ground wire 190. Furthermore, the filling of the wire body 160 prevents the first insulating tube 130, the second insulating tube 140, the signal wire 180, and the ground wire 190 from moving arbitrarily within the sheath 170 (or wrapping tape 150).

[0118] Based on voltage and current requirements, the power conductor 142 specification is 16mm. 2 Up to 70mm 2 In order to achieve good heat dissipation, the cooling pipes also need to be modified accordingly. When the outer diameter of the power conductor 142 is R1, the outer diameter of the isolator 143 is R2, the inner diameter of the first insulating tube 130 is R3, and the inner diameter of the second insulating tube 140 is R4, the best cooling effect can be achieved in the following relationship:

[0119] [R4-(R1+2R2)] / 2=0.5~0.8.

[0120] (R4 2- R1 2 -R2 2 π / 4 = 70 to 100.

[0121] In some embodiments, the outer diameter R1 of the power conductor 142 is preferably in the range of 6 mm to 11.9 mm. The outer diameter R2 of the isolator 143 is preferably between 1.4 mm and 2.3 mm. The inner diameter R3 of the first insulating tube 130 is preferably between 6 mm and 8 mm. The inner diameter of the second insulating tube 140 is preferably between 12 mm and 16 mm.

[0122] Please see again Figure 1 , Figure 2 and Figure 4 The charging gun 200 includes a gun connector 210 connected to the gun end 110. The gun connector 210 includes a first water jacket 211, a first connector portion 212, a first sleeve portion 213, and a first terminal portion 214.

[0123] The first water jacket 211 includes a first connecting space 211a, a second connecting space 211b, and a gun connecting channel 211c. Figure 2 As shown, the gun connection channel 211c connects the first connecting space 211a and the second connecting space 211b. In some embodiments, the gun connection channel 211c is obliquely connected to the first connecting space 211a and the second connecting space 211b at an inclined angle. In some embodiments, the water jacket refers to the space for supplying cooling medium for heat exchange, and is not limited to using water or liquid as the cooling medium. Furthermore, the water jacket can be used to contain the cooling medium, and through the circulation of the cooling medium, it can effectively absorb and remove heat, thereby preventing the equipment or device from overheating and protecting the normal operation and performance of the equipment or device.

[0124] In one embodiment, the first connecting space 211a and the second connecting space 211b are approximately two parallel spaces. The gun connecting channel 211c obliquely penetrates the first connecting space 211a and the second connecting space 211b. Therefore, the gun connecting channel 211c will be at an inclined angle to the first connecting space 211a and the second connecting space 211b. Since the gun connecting channel 211c penetrates the first connecting space 211a and the second connecting space 211b, the first connecting space 211a can be interconnected with the second connecting space 211b via the gun connecting channel 211c.

[0125] In some embodiments, the gun connection channel 211c is formed by CNC drilling. Accordingly, the gun connector 210 further includes a first seal 215, and the gun connection channel 211c further includes a first opening 211c1, the first seal 215 being used to seal the first opening 211c1. Therefore, the coolant flowing within the first water jacket 211 will not leak out through the first opening 211c1.

[0126] Please see Figure 5 , Figure 5 According to some embodiments, this is a side view of the gun connector viewed from the direction of the first terminal portion. In some embodiments, the first water jacket 211 further includes a first upper top surface 2111a and a first lower bottom surface 2111b, the first water jacket 211 tapering from the first lower bottom surface 2111b towards the first upper top surface 2111a, and the first upper top surface 2111a and the first lower bottom surface 2111b are arc-shaped. Accordingly, the second communicating space 211b is larger than the first communicating space 211a, so that the coolant flowing in the second communicating space 211b will be more than the coolant in the first communicating space 211a, so as to achieve a better heat dissipation effect on the power conductor 142 (described in detail later).

[0127] Furthermore, since the first upper top surface 2111a is arc-shaped, if the gun connection channel 211c is CNC drilled through the first upper top surface 2111a, it may be difficult to seal the opening formed therein. Therefore, the gun connection channel 211c is CNC drilled laterally from a plane adjacent to the first upper top surface 2111a. Based on this, since the first opening 211c1 is formed in a plane, the first sealing member 215 will more easily achieve a sealing effect when sealing the first opening 211c1.

[0128] The first connector 212 is connected to the first water jacket 211 to connect to the first communicating space 211a, wherein the first insulating tube 130 is sleeved on the first connector 212 to connect the first channel 130a to the first communicating space 211a. Preferably, the first connector 212 is a hollow pipe connector, with one end connected to the first water jacket 211 and the other end sleeved on the first insulating tube 130. Thus, the first channel 130a can connect to the first communicating space 211a via the first connector 212.

[0129] In some embodiments, the gun connector 210 further includes a first waterproof ring gasket 216, which is disposed between the first connector portion 212 and the first water jacket 211. Therefore, by providing the first waterproof ring gasket 216, when coolant flows through the first channel 130a and the first communicating space 211a, coolant overflow from the connection between the first connector portion 212 and the first water jacket 211 can be prevented.

[0130] The first sleeve portion 213 is connected to the first water jacket 211 to communicate with the second communicating space 211b. Preferably, the first sleeve portion 213 is a hollow sleeve, with one end connected to the first water jacket 211 and the other end sleeved onto the second insulating tube 140. Thus, the second channel 140a can communicate with the second communicating space 211b via the first sleeve portion 213.

[0131] In some embodiments, the gun connector 210 further includes a first back support ring 217 and two second waterproof rings (218a, 218b), and the first sleeve portion 213 further includes a first flange 213a, wherein one of the second waterproof rings 218a is sleeved on the first sleeve portion 213 and abuts against the first flange 213a, and the insulating layer 141 is sleeved on the first sleeve portion 213 and one of the second waterproof rings 218a, while the first back support ring 217 and the other second waterproof ring 218b are sleeved on the first sleeve portion 213 and located outside the insulating layer 141. In some embodiments, the second waterproof ring 218a sleeved on the first sleeve portion 213 and abutting against the first flange 213a may be an annular gasket.

[0132] Furthermore, when the first sleeve portion 213 is connected to the first water jacket 211, the first flange 213a is located inside the first water jacket 211. The second insulating tube 140 is sleeved on the other end of the first sleeve portion 213. Accordingly, the power conductor 142 will pass through the hollow part of the first sleeve portion 213 and be located in the second communicating space 211b, while the insulating layer 141 is sleeved on the outside of the first sleeve portion 213.

[0133] To prevent coolant leakage, one of the second waterproof rings 218a is first fitted onto the first sleeve portion 213 and abuts against the first flange 213a. The insulating layer 141 is then fitted onto the outside of the first sleeve portion 213, simultaneously covering the second waterproof ring 218a. The other second waterproof ring 218b is then fitted onto the first sleeve portion 213 and located outside the insulating layer 141. Next, the first back support ring 217 is also fitted onto the first sleeve portion 213 and located outside the insulating layer 141, applying pressure to the first flange 213a. Thus, the first back support ring 217 tightly presses against the two second waterproof rings (218a, 218b), preventing the second waterproof rings (218a, 218b) from falling off and preventing coolant leakage. In some embodiments, the first back support ring 217 can be pressurized and fixed by screws.

[0134] The first terminal portion 214 is connected to the first water jacket 211, wherein the second insulating tube 140 is sleeved on the first sleeve portion 213, and the power conductor 142 is electrically connected to the first terminal portion 214. In some embodiments, the first terminal portion 214 is made of, for example but not limited to, metal or other conductive materials. As mentioned above, when the second insulating tube 140 is sleeved on the first sleeve portion 213, the power conductor 142 will pass through the hollow portion of the first sleeve portion 213 and thus be located in the second communicating space 211b. Accordingly, the power conductor 142 is electrically connected to the first terminal portion 214.

[0135] In some embodiments, the gun connector 210 further includes a first C-shaped retaining ring 219 and a first waterproof ring 220. The first C-shaped retaining ring 219 is pressed against the first terminal portion 214 and the power conductor 142. The first waterproof ring 220 is sleeved on the first terminal portion 214, and the outer side of the first waterproof ring 220 contacts the first water jacket 211. Here, when the first terminal portion 214 is connected to the first water jacket 211, a portion of it is located inside the first water jacket 211. Accordingly, when the first waterproof ring 220 is sleeved on the first terminal portion 214, it is also located inside the first water jacket 211. Therefore, the outer diameter of the first waterproof ring 220 will abut against the first water jacket 211. By providing the first waterproof ring 220, leakage of coolant from the second communicating space 211b can be prevented.

[0136] Furthermore, by pressing the first C-shaped retaining ring 219 against the first terminal portion 214 and the power conductor 142, the first terminal portion 214 can be electrically connected to the power conductor 142. Moreover, since the first C-shaped retaining ring 219 includes a first notch 219a, coolant can flow into the first communicating space 211a through the first notch 219a.

[0137] In some embodiments, the gun connector 210 further includes a first replacement cap 221, detachably disposed on the first terminal portion 214. Accordingly, the first replacement cap 221 is disposed on the first terminal portion 214 and located outside the first water jacket 211, for example, but not limited to, by means of threaded fastening. In other embodiments, the first replacement cap 221, when disposed on the first terminal portion 214, may also include a spring 222 to provide shock absorption and cushioning, and to increase conductivity and contact. Therefore, when the first terminal portion 214 fails, only the first replacement cap 221 needs to be replaced, without replacing the entire first terminal portion 214.

[0138] Please see Figure 4 , Figure 6 and Figure 7 , Figure 6 The following is a block diagram of a charging station based on some embodiments. Figure 7 This is a schematic diagram illustrating the charging device and coolant flow according to some embodiments. The charging device includes a liquid-cooled cable assembly (liquid-cooled cable 100 and charging gun 200) as described above, a charging pile 300, a connecting pipe 500, and a pile connector 400. In one embodiment, as... Figure 7 As shown, the arrows indicate the direction of coolant flow. The connecting lines between the various components represent pipe connections; for example, the connecting pipe 500 connects the cooling module 310 to the connector 400, or the liquid cooling cable 100 connects to the charging gun 200.

[0139] Please see Figure 8 , Figure 9 and Figure 10 , Figure 8 An exploded view of the pile joint is provided based on some embodiments. Figure 9 A cross-sectional view of the pile joint is provided based on some embodiments. Figure 10 According to some embodiments, this is a side view of the pile joint viewed from the direction of the second terminal portion.

[0140] The charging pile 300 includes a cooling module 310 and a charging module 320. The charging module 320 is electrically connected to the cooling module 310 to provide power. The cooling module 310 includes an inlet 311 and an outlet 312. The inlet 311 is connected to the pile end 120 of the liquid-cooled cable 100 and connects to the first channel 130a, i.e., the inlet 311 is connected to the first insulating pipe 130. The two ends of the connecting pipe 500 are respectively connected to the pile connector 400 and the outlet 312 of the cooling module 310.

[0141] The pile connector 400 (second terminal portion 414) is electrically connected to the charging module 320. The pile connector 400 includes a second water jacket 411, a second connector portion 412, a second sleeve portion 413, and a second terminal portion 414.

[0142] The second water jacket 411 includes a third connecting space 411a, a fourth connecting space 411b, and a pile-connecting channel 411c. Figure 9 As shown, the pile-connecting channel 411c connects the third connecting space 411a and the fourth connecting space 411b. In some embodiments, the pile-connecting channel 411c is obliquely connected to the third connecting space 411a and the fourth connecting space 411b at an inclined angle. As mentioned above, in some embodiments, the water jacket refers to the space for supplying cooling medium for heat exchange, and is not limited to using water or liquid as the cooling medium. Furthermore, the water jacket can be used to contain the cooling medium, and through the circulation of the cooling medium, it can effectively absorb and remove heat, thereby preventing the equipment or device from overheating and protecting the normal operation and performance of the equipment or device.

[0143] In one embodiment, the third connecting space 411a and the fourth connecting space 411b are approximately two parallel spaces. The pile-connecting channel 411c obliquely penetrates the third connecting space 411a and the fourth connecting space 411b. Therefore, the pile-connecting channel 411c will be at an inclined angle to the third connecting space 411a and the fourth connecting space 411b. Since the pile-connecting channel 411c penetrates the third connecting space 411a and the fourth connecting space 411b, the third connecting space 411a can be interconnected with the fourth connecting space 411b via the pile-connecting channel 411c.

[0144] In some embodiments, the pile connection channel 411c is formed by CNC drilling. Accordingly, the pile connector 400 further includes a second seal 415, and the pile connection channel 411c further includes a second opening 411c1, the second seal 415 being used to seal the second opening 411c1. Therefore, coolant flowing within the second water jacket 411 will not leak out through the second opening 411c1.

[0145] Please see again Figure 10In some embodiments, the second water jacket 411 further includes a second upper top surface 4111a and a second lower bottom surface 4111b. The second water jacket 411 tapers from the second lower bottom surface 4111b towards the second upper top surface 4111a, and the second upper top surface 4111a and the second lower bottom surface 4111b are arc-shaped. Therefore, the fourth connecting space 411b is larger than the third connecting space 411a, resulting in more coolant flowing in the fourth connecting space 411b than in the third connecting space 411a, thus achieving better heat dissipation for the power conductor 142.

[0146] Furthermore, since the second upper top surface 4111a is arc-shaped, it would be difficult to seal the opening formed by CNC drilling the pile connection channel 411c from the second upper top surface 4111a. Therefore, the pile connection channel 411c is laterally CNC drilled from a plane adjacent to the second upper top surface 4111a. Based on this, since the second opening 411c1 is formed in a plane, the second sealing member 415 will more easily achieve a sealing effect when sealing the second opening 411c1.

[0147] The second connector 412 is connected to the second water jacket 411 to connect to the third connecting space 411a, wherein the other end of the connecting pipe 500 is sleeved on the second connector 412. Here, the second connector 412 is preferably a hollow pipe connector, with one end connected to the second water jacket 411 and the other end sleeved on the connecting pipe 500.

[0148] In some embodiments, the pile connector 400 further includes a second waterproof ring gasket 416, which is disposed between the second connector portion 412 and the second water jacket 411. Therefore, by providing the second waterproof ring gasket 416, when coolant flows through the connecting pipe 500 and the third connecting space 411a, coolant overflow from the connection between the second connector portion 412 and the second water jacket 411 can be prevented.

[0149] The second sleeve portion 413 is connected to the second water jacket 411 to communicate with the fourth communicating space 411b. Preferably, the second sleeve portion 413 is a hollow sleeve, with one end connected to the second water jacket 411 and the other end sleeved onto the second insulating tube 140. Therefore, the second channel 140a can communicate with the fourth communicating space 411b via the second sleeve portion 413.

[0150] In some embodiments, the pile connector 400 further includes a second back support ring 417 and two fourth waterproof rings (418a, 418b), and the second sleeve portion 413 further includes a second flange 413a, wherein one of the fourth waterproof rings 418a is sleeved on the second sleeve portion 413 and abuts against the second flange 413a, and the insulating layer 141 is sleeved on the second sleeve portion 413 and one of the fourth waterproof rings 418a, while the second back support ring 417 and the other fourth waterproof ring 418b are sleeved on the second sleeve portion 413 and located outside the insulating layer 141. In some embodiments, the fourth waterproof ring 418a sleeved on the second sleeve portion 413 and abutting against the second flange 413a may be an annular gasket.

[0151] Furthermore, when the second sleeve portion 413 is connected to the second water jacket 411, the second flange 413a is located inside the second water jacket 411. The second insulating tube 140 is sleeved on the other end of the second sleeve portion 413. Accordingly, the power conductor 142 will pass through the hollow portion of the second sleeve portion 413 and be located in the fourth communicating space 411b, while the insulating layer 141 is sleeved on the outside of the second sleeve portion 413.

[0152] To prevent coolant leakage, one of the fourth waterproof rings 418a is first fitted onto the second sleeve portion 413 and abuts against the second flange 413a. The insulating layer 141 is then fitted onto the outside of the second sleeve portion 413, covering the fourth waterproof ring 418a. The other fourth waterproof ring 418b is then fitted onto the second sleeve portion 413 and located outside the insulating layer 141. Next, the second back support ring 417 is similarly fitted onto the second sleeve portion 413 and located outside the insulating layer 141, applying pressure to the second flange 413a. Thus, the second back support ring 417 tightly presses against the two fourth waterproof rings (418a, 418b), preventing the fourth waterproof rings (418a, 418b) from falling off and preventing coolant leakage. In some embodiments, the second back support ring 417 can be secured by screws.

[0153] The second terminal portion 414 is connected to the second water jacket 411, wherein the second insulating tube 140 is sleeved on the second sleeve portion 413, and the power conductor 142 is electrically connected to the second terminal portion 414. In some embodiments, the second terminal portion 414 is made of, for example but not limited to, metal or other conductive materials. As mentioned above, when the second insulating tube 140 is sleeved on the second sleeve portion 413, the power conductor 142 will pass through the hollow portion of the second sleeve portion 413 and thus be located in the fourth communicating space 411b. Accordingly, the power conductor 142 is electrically connected to the second terminal portion 414.

[0154] In some embodiments, the pile connector 400 further includes a second C-shaped retaining ring 419 and a third waterproof ring 420. The second C-shaped retaining ring 419 is pressed against the second terminal portion 414 and the power conductor 142. The third waterproof ring 420 is sleeved on the second terminal portion 414, and the outer side of the third waterproof ring 420 contacts the second water jacket 411. Here, when the second terminal portion 414 is connected to the second water jacket 411, a portion of it is located inside the second water jacket 411. Accordingly, when the third waterproof ring 420 is sleeved on the second terminal portion 414, it is also located inside the second water jacket 411. Therefore, the outer diameter of the third waterproof ring 420 will abut against the second water jacket 411. By providing the third waterproof ring 420, leakage of coolant from the fourth communicating space 411b can be prevented.

[0155] Furthermore, by pressing the second C-shaped retainer 419 against the second terminal portion 414 and the power conductor 142, the second terminal portion 414 can be electrically connected to the power conductor 142. Moreover, since the second C-shaped retainer 419 includes a second notch 419a, when coolant wants to flow from the third communicating space 411a to the fourth communicating space 411b, it can flow into the fourth communicating space 411b through the second notch 419a.

[0156] Please see again Figure 7 The coolant flows out from the outlet 312 of the cooling module 310, then flows through the connecting pipe 500 into the third connecting space 411a of the pile connector 400, then into the fourth connecting space 411b, and then into the second insulating tube 140. It then flows into the second connecting space 211b of the gun connector 210, and then into the first connecting space 211a before flowing back into the first insulating tube 130 and back to the cooling module 310. This completes the entire cycle, simultaneously cooling the gun connector 210, the pile connector 400, and the liquid-cooled cable 100.

[0157] In summary, in some embodiments, both the gun connector and the peg connector of the present invention include a flow space and an oblique connecting channel, allowing coolant to flow inside the gun connector and the peg connector to cool them. Simultaneously, the liquid-cooled cable uses the power conductor as the conductor, and a space for accommodating coolant is formed inside the second insulating tube, allowing the coolant to fully contact the power conductor for optimal cooling. Furthermore, an insulating member disposed outside the power conductor and between the power conductor and the insulating layer isolates the electrical or thermal conduction of the power conductor from the insulating layer. This solves the problem of overheating during charging in the prior art. It also solves the problem of overheating of the cable and its connecting ends during charging.

[0158] Although the technical content of the present invention has been described above with reference to preferred embodiments, it is not intended to limit the present invention. For those skilled in the art, any modifications and alterations made without departing from the spirit of the present invention should be covered within the scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A liquid-cooled cable assembly, comprising: A liquid-cooled cable, having a gun end and a stake end, comprising: A first insulating tube having a first channel; A second insulating tube body, comprising: An insulating layer; A second channel is located within the insulation layer; A power conductor is located in the second channel; and An isolator is disposed outside the power conductor and isolates the power conductor from the insulating layer; A tape is used to cover the first insulating tube and the second insulating tube. A single wire, located within the wrapping tape and filling the space between the first insulating tube and the second insulating tube; and A covering, wrapped around the bag strap; and A charging gun includes a gun connector connected to the gun end, the gun connector comprising: A first water jacket includes a first connecting space, a second connecting space and a gun connecting channel, the gun connecting channel connecting the first connecting space and the second connecting space; A first connector is connected to the first water jacket to communicate with the first communicating space, wherein, The first insulating tube is sleeved on the first connector to allow the first channel to connect to the first connecting space; A first sleeve portion, connected to the first water jacket to communicate with the second communicating space; and A first terminal portion is connected to the first water jacket, wherein the second insulating tube is sleeved on the first sleeve portion, and the power conductor is electrically connected to the first terminal portion.

2. The liquid-cooled cable assembly as described in claim 1, characterized in that, The gun connection channel is obliquely connected to the first connecting space and the second connecting space at an inclined angle.

3. The liquid-cooled cable assembly as described in claim 1, characterized in that, The gun connector also includes a first seal, and the gun connection channel also includes a first opening, the first seal being used to seal the first opening.

4. The liquid-cooled cable assembly as described in claim 1, characterized in that, The gun connector also includes a first waterproof ring gasket, which is disposed between the first connector portion and the first water jacket.

5. The liquid-cooled cable assembly as described in claim 1, characterized in that, The gun connector also includes a first C-shaped retaining ring and a first waterproof ring. The first C-shaped retaining ring is pressed against the first terminal portion and the power conductor. The first waterproof ring is sleeved on the first terminal portion, and the outer side of the first waterproof ring contacts the first water jacket.

6. The liquid-cooled cable assembly as claimed in claim 1, characterized in that, The gun connector also includes a first back support ring and two second waterproof rings. The first sleeve portion also includes a first flange. One of the second waterproof rings is fitted onto the first sleeve portion and abuts against the first flange. The insulating layer is fitted onto the first sleeve portion and one of the second waterproof rings. The first back support ring and the other second waterproof ring are fitted onto the first sleeve portion and located outside the insulating layer.

7. The liquid-cooled cable assembly as claimed in claim 1, characterized in that, The first water jacket also includes a first upper top surface and a first lower bottom surface. The first water jacket gradually narrows from the first lower bottom surface to the first upper top surface, and the first upper top surface and the first lower bottom surface form an arc shape.

8. The liquid-cooled cable assembly as claimed in claim 1, characterized in that, The second connected space is larger than the first connected space.

9. The liquid-cooled cable assembly as claimed in claim 1, characterized in that, The gun connector also includes a first replacement cap, which is detachably mounted on the first terminal portion.

10. The liquid-cooled cable assembly as claimed in claim 1, characterized in that, The insulating component is made of insulating material, and its heat resistance deformation temperature is higher than that of the insulating layer.

11. The liquid-cooled cable assembly as claimed in claim 1, characterized in that, The pitch of the isolator is between 15mm and 25mm.

12. The liquid-cooled cable assembly as claimed in claim 1, characterized in that, The power conductor has an outer diameter R1, the isolator has an outer diameter R2, and the second insulating tube has an inner diameter R4, which conforms to the following relationship [R4-(R1+2R2)] / 2=0.5~0.

8.

13. The liquid-cooled cable assembly as claimed in claim 1, characterized in that, The power conductor has an outer diameter R1, the isolator has an outer diameter R2, and the second insulating tube has an inner diameter R4, which conform to the following relationship (R4 2 -R1 2 -R2 2 π / 4 = 70 to 100.

14. A charging device, comprising: A liquid-cooled cable assembly as described in any one of claims 1 to 13; One charging station includes: A cooling module includes an outlet and an inlet, the inlet being connected to the terminal of the liquid-cooled cable and communicating with the first channel; and A charging module is electrically connected to the cooling module; A connecting pipe, one end of which is connected to the water outlet; and A connector, electrically connected to the charging module, includes: A second water jacket includes a third connecting space, a fourth connecting space and a pile-connecting channel, the pile-connecting channel connecting the third connecting space and the fourth connecting space; A second connector is connected to the second water jacket to communicate with the third communicating space, wherein, The other end of the connecting pipe is fitted onto the second connector. A second sleeve portion, connected to the second water jacket to communicate with the fourth communicating space; and A second terminal portion is connected to the second water jacket, wherein the second insulating tube is sleeved on the second sleeve portion, and the power conductor is electrically connected to the second terminal portion.

15. The charging device as claimed in claim 14, characterized in that, The pile-connecting channel is obliquely connected to the third and fourth connecting spaces at an inclined angle.

16. The charging device as claimed in claim 14, characterized in that, The pile joint also includes a second seal, and the pile connection channel also includes a second opening, the second seal being used to seal the second opening.

17. The charging device as claimed in claim 14, characterized in that, The pile joint also includes a second waterproof ring gasket, which is disposed between the second joint and the second water jacket.

18. The charging device as claimed in claim 14, characterized in that, The pile connector also includes a second C-shaped buckle and a third waterproof ring. The second C-shaped buckle is pressed against the second terminal portion and the power conductor, and the third waterproof ring is sleeved on the second terminal portion, with the outer side of the third waterproof ring contacting the second water jacket.

19. The charging device as claimed in claim 14, characterized in that, The pile joint also includes a second back support ring and two fourth waterproof rings. The second sleeve portion also includes a second flange, one of which is sleeved on the second sleeve portion and abuts against the second flange. The insulating layer is sleeved on the first sleeve portion and one of the fourth waterproof rings. The second back support ring and the other fourth waterproof ring are sleeved on the first sleeve portion and located outside the insulating layer.

20. The charging device as claimed in claim 14, characterized in that, The second water jacket also includes a second upper top surface and a second lower bottom surface. The second water jacket gradually narrows from the second lower bottom surface to the second upper top surface, and the second upper top surface and the second lower bottom surface form an arc shape.

21. The charging device as claimed in claim 14, characterized in that, The fourth connected space is larger than the third connected space.

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