Power connector

Abstract

The present invention relates to a power connector comprising an insulative housing and a plurality of power contacts disposed in the insulative housing. The insulative housing has a mating portion forming a mating cavity and a plurality of slots connected to the mating cavity. Each of the power contacts has a base portion fixed in the corresponding slots and a contacting arm extending forward from the base portion to protrude into the mating cavity. A ratio of the material thickness of each power contact to a height of the mating portion ranges from

Description

[Technical Field]

[0001] This invention relates to a power connector. [Previous Technology]

[0002] Traditional power connectors have an insulating body and a plurality of power terminals fixed within the insulating body. Each power terminal has a base portion and at least one elastic contact arm extending forward from the base portion. The material thickness (t) of the power terminals and the mating height (H) of the insulating body have a significant impact on the electrical and mechanical performance of high-current applications. The ratio of the power terminal material thickness to the mating height is a key factor determining the balance between the connector's current carrying capacity and mechanical strength. However, existing technologies have not yet optimized this ratio. When the t / H value is too large, meaning the power terminal material thickness is relatively thick, the power terminal has a high current carrying capacity but insufficient mechanical strength, affecting its durability and structural stability. When the t / H value is too small, meaning the power terminal material thickness is relatively thin, the power terminal has high mechanical strength, but the cross-sectional area of ​​the power terminal is small, resulting in a decrease in its current carrying capacity and failing to meet the miniaturization requirements of high power density applications. Because different application scenarios have different requirements for the current carrying capacity and mechanical strength of power terminals, existing designs are difficult to balance reliability and industry needs.

[0003] In view of this, it is indeed necessary to make further improvements to traditional power connectors in order to solve the above problems. [Summary of the Invention]

[0004] The purpose of this invention is to provide a power connector that can improve overall performance and market applicability.

[0005] To achieve the above objective, the present invention provides a power connector, which includes an insulating body and a plurality of power terminals disposed within the insulating body. The insulating body has a mating portion having a mating cavity and a terminal groove communicating with the mating cavity. Each power terminal has a base portion fixed within the terminal groove and a contact arm extending forward from the base portion to protrude into the mating cavity. The ratio of the material thickness of the power terminal to the height of the mating portion ranges from 4.44% to 9.85%.

[0006] Further, the ratio of the material thickness of the aforementioned power terminal to the height of the aforementioned mating portion ranges from 4.71% to 9.14%.

[0007] Further, the ratio of the material thickness of the aforementioned power terminal to the height of the aforementioned mating portion ranges from 5.00% to 8.53%.

[0008] Further, the ratio of the material thickness of the aforementioned power terminal to the height of the aforementioned mating portion ranges from 5.33% to 8.00%.

[0009] Further, the contact arms of the aforementioned power terminals are arranged in a row along the transverse direction of the aforementioned insulating body, and the power terminals corresponding to the same row of contact arms form at least one terminal combination. Each terminal combination includes at least two power terminals, and the base portions of the aforementioned two power terminals are arranged in the height direction of the insulating body.

[0010] Further, the aforementioned terminal assembly includes an upper row of terminal assemblies and a lower row of terminal assemblies with contact arms arranged opposite each other in the height direction. The contact arms of each terminal assembly are arranged in at least two groups arranged side by side in the lateral direction. The distance between two adjacent groups of contact arms is greater than the distance between two adjacent contact arms in the same group.

[0011] Further, the contact arms of each power terminal are arranged in at least two groups side by side in the lateral direction, and the distance between two adjacent groups of contact arms in the lateral direction is greater than the distance between two adjacent contact arms in the same group.

[0012] Further, each of the aforementioned terminal slots is provided with at least one partition wall, which separates two adjacent sets of contact arms in the lateral direction.

[0013] Further, the aforementioned insulating body has a transverse wall extending in the transverse direction, which divides the terminal slot into two groups corresponding to the upper row of terminal groups and the lower row of terminal groups respectively. Each of the aforementioned partition walls extends in the front-back direction and has a connecting portion connected to the aforementioned transverse wall.

[0014] Furthermore, in the same terminal assembly, at least a portion of the contact arm of the aforementioned second terminal extends into the gap between two adjacent contact arms of the first terminal.

[0015] Compared with the prior art, the power connector of the present invention optimizes the ratio of the material thickness of the power terminal to the height of the mating part, so that the ratio of the material thickness of the power terminal to the height of the mating part is in the range of 4.44% to 9.85%, thereby improving the current carrying capacity while ensuring mechanical strength and structural stability to meet the miniaturization requirements of high power density applications.

Implementation Method

[0016] Please refer to Figures 1 to 12 for a preferred embodiment of the power connector 100 of the present invention. In some embodiments of the present invention, the aforementioned power connector 100 includes an insulating body 1 and a plurality of power terminals 2 disposed within the aforementioned insulating body 1.

[0017] For ease of explanation, when describing the power connector 100 below, the mating direction of the power connector 100 will be regarded as the front-back direction, one direction perpendicular to the aforementioned front-back direction will be regarded as the lateral direction, and the other direction perpendicular to the aforementioned front-back direction will be regarded as the height direction.

[0018] As shown in Figures 1 to 3, the aforementioned insulating body 1 has a mating portion 10 with a mating cavity 101 and a terminal slot 103 communicating with the aforementioned mating cavity 101. The aforementioned mating portion 10 is located on the front side of the aforementioned insulating body 1. The aforementioned terminal slot 103 extends in the front-rear direction, and the aforementioned power terminal 2 is fixed in the corresponding terminal slot 103 of the aforementioned insulating body 1.

[0019] As shown in Figures 8 and 9, in this invention, each of the aforementioned terminal slots 103 is provided with at least one partition wall 102 to divide each terminal slot 103 into at least two terminal channels 1031. In the embodiments shown in this application, each terminal slot 103 is provided with two of the aforementioned partition walls 102 to divide one terminal slot 103 into three terminal channels 1031. In other embodiments, each terminal slot 103 may also be divided into two, four or more terminal channels 1031 by partition walls 102.

[0020] The aforementioned insulating body 1 has a transverse wall 104 extending in the transverse direction, which divides the terminal slot 103 into upper and lower groups. Each of the aforementioned partition walls 102 extends in the front-back direction and has a connecting portion 1021 connected to the aforementioned transverse wall 104.

[0021] Each of the aforementioned partition walls 102 includes a first partition 1022 located on the front side of the aforementioned connecting portion 1021 and a second partition 1023 located on the rear side of the aforementioned connecting portion 1021. The aforementioned first partition 1022 is integrally connected to the top wall 105 or bottom wall 106 of the aforementioned insulating body 1.

[0022] Further, the front end of the aforementioned second spacer 1023 is connected to the aforementioned connecting portion 1021 and has a cantilever structure extending rearward. The aforementioned second spacer 1023 has a vertically placed flat plate structure, that is, its width in the lateral direction is smaller than its height in the vertical direction.

[0023] As shown in Figures 9 and 11, the aforementioned first spacer 1022 has a guide surface 1024 on the front side and an extension surface 1025 on the rear side. The guide surface 1024 is inclined at an angle to the horizontal plane, and the extension surface 1025 is parallel to the horizontal plane. The extension length of the guide surface 1024 in the front-rear direction is greater than the extension length of the extension surface 1025 in the front-rear direction, so as to achieve a better guiding effect on the front side, thereby adapting to the increase in the width of the base portion 202.

[0024] In the height direction, the distance between the aforementioned extended surface 1025 and the aforementioned transverse wall 104 is smaller than the distance between the corresponding second interval 1023 and the aforementioned transverse wall 104, thereby increasing the arc creep distance at the corresponding position of the contact arm 201 of the power terminal and ensuring the safety and reliability of the electrical connection.

[0025] The rear end face of the aforementioned first interval portion 1022 is located between the front end face and the rear end face of the aforementioned connecting portion 1021 in the front-back direction. The second interval portion 1023 located on the upper side extends rearward to be flush with the aforementioned top wall 105. The rear end face of the aforementioned transverse wall 104 is flush with the rear end face of the aforementioned top wall 105. The second interval portion 1023 located on the lower side extends rearward to be flush with the aforementioned bottom wall 106.

[0026] The aforementioned transverse wall 104 has a notch 1041 located on its lower side. The notch 1041 is formed by a recess from the rear end of the aforementioned transverse wall 104. In the front-back direction, the notch 1041 is located on the rear side of the aforementioned bottom wall 106.

[0027] Referring to Figures 1 to 7 and Figures 10 to 12, each of the aforementioned power terminals 2 has a base portion 202 fixed within the aforementioned terminal slot 103 and a contact arm 201 extending forward from the aforementioned base portion 202 to protrude into the aforementioned mating cavity 101. The front portion of the aforementioned contact arm 201 is bent to be elastic. In this example, the aforementioned base portion 202 has an interference portion 2021 fixed to the insulating body 1, and the aforementioned interference portion 2021 is disposed on both sides of the aforementioned base portion 202 in the lateral direction.

[0028] As shown in Figure 12, the ratio of the material thickness t of the aforementioned power terminal 2 to the height H of the aforementioned mating portion 10 ranges from 4.44% to 9.85%. In this invention, the thickness of the base portion 202 of the aforementioned power terminal 2 in the height direction is the material thickness t of the aforementioned power terminal 2. By controlling the ratio t / H of the material thickness t of the power terminal to the height H of the aforementioned mating portion 10 within the range of 4.44% to 9.85%, this invention ensures a balance between the current carrying capacity and mechanical strength of the power terminal 2, making the power connector 100 suitable for general high-power applications, improving overall reliability and durability, and ensuring optimal performance.

[0029] Furthermore, the ratio of the material thickness of the aforementioned power terminal 2 to the height of the aforementioned mating portion 10 is in the range of 4.71% to 9.14%. Thus, by controlling the t / H range to 4.71% to 9.14%, the structural rigidity of the power terminal 2 can be further optimized, the mechanical strength can be improved, and better current transmission performance can be maintained at the same time.

[0030] Furthermore, the ratio of the material thickness t of the aforementioned power terminal 2 to the height H of the aforementioned mating portion 10 is in the range of 5.00% to 8.53%. Thus, by controlling the range of t / H to 5.00% to 8.53%, the holding force and insertion / removal force of the power terminal 2 can be optimized while taking into account the high power transmission capability, making it suitable for industrial and server power supply applications with high reliability requirements.

[0031] More preferably, the ratio of the material thickness t of the aforementioned power terminal 2 to the height H of the aforementioned mating portion 10 is in the range of 5.33% to 8.00%. In this way, by controlling the range of t / H to 5.33% to 8.00%, the optimal mechanical and electrical performance of the power terminal 2 in high power density applications can be ensured, further reducing contact resistance and heat generation, and conforming to the trend of industrial miniaturization, making it the most suitable for high-density power modules or high-performance computing (HPC) devices.

[0032] Furthermore, as shown in Figures 4 and 10, the width W1 of the base portion 202 of each of the aforementioned power terminals 2 in the lateral direction is not less than 10% of the width W2 of the aforementioned insulating body 1 in the lateral direction. By making the width of the base portion 202 of the aforementioned power terminals 2 in the lateral direction wider, the conductor area is increased, thereby effectively increasing the conductive path of the terminal assembly and suppressing the heating of the power terminals.

[0033] Furthermore, the width W1 of the base portion 202 of the aforementioned first and second terminals 21 and 22 in the lateral direction is not less than 20% of the width W2 of the aforementioned insulating body 1 in the lateral direction, thereby increasing the cross-sectional area of ​​the power terminal, reducing resistance, reducing heat generation, and effectively improving the current carrying capacity of the power terminal.

[0034] Furthermore, in a preferred embodiment of the present invention, the width W1 of the base portion 202 of each of the aforementioned power terminals 2 in the lateral direction is not less than 30% of the width W2 of the aforementioned insulating body 1 in the lateral direction. By maximizing the width of the aforementioned power terminals 2 in the lateral direction, the conductive path is increased, and the heating of the power terminals is effectively suppressed.

[0035] In this embodiment, the contact arms 201 of the aforementioned power terminals 2 are arranged in a row along the transverse direction of the aforementioned insulating body 1. The power terminals 2 corresponding to the same row of contact arms 201 are formed with at least one terminal combination. Each terminal combination includes at least two power terminals 2. The base portions 202 of the aforementioned two power terminals 2 are arranged in the height direction of the aforementioned insulating body 1.

[0036] Specifically, the aforementioned terminal assembly includes an upper row terminal assembly 2a and a lower row terminal assembly 2b disposed opposite each other in the height direction by contact arms 201, forming a power terminal pair. The aforementioned transverse wall 104 divides the terminal slot 103 into two groups corresponding to the upper row terminal assembly 2a and the lower row terminal assembly 2b respectively.

[0037] As shown in Figures 3 to 6, the contact arms 201 of each terminal assembly are arranged in at least two groups side by side in the lateral direction. As shown in Figure 6, each group of contact arms 201 is marked as G in Figure 6. The distance between two adjacent groups of contact arms 201 is greater than the distance between two adjacent contact arms 201 in the same group.

[0038] Each of the aforementioned upper terminal assembly 2a and lower terminal assembly 2b includes a first terminal 21 and a second terminal 22. Each of the aforementioned first terminal 21 and second terminal 22 has a base portion 202 and at least one of the aforementioned contact arms 201 extending forward from the base portion 202.

[0039] Each of the aforementioned upper row terminal assembly 2a and lower row terminal assembly 2b is referred to as a terminal assembly, and each of the aforementioned first and second terminals 21 and 22 is referred to as a power terminal 2, and each power terminal 2 is generally a sheet-like structure extending in the lateral direction. In this invention, the aforementioned base portion 202 is the part with the largest width in the lateral direction for each power terminal 2.

[0040] In this invention, in each terminal assembly, the base portion 202 of the first terminal 21 is disposed close to the transverse wall 104 in the height direction, and the base portion 202 of the second terminal 22 is disposed away from the transverse wall 104 in the height direction.

[0041] In this embodiment, the aforementioned power terminal 2 further has an extension portion 203 formed by bending and extending from the aforementioned base portion 202, and the aforementioned extension portion 203 is located on the rear side of the aforementioned base portion 202. In addition, the aforementioned power terminal 2 also has a solder foot 204 formed by extending downward from the aforementioned extension portion 203, and the extension direction of the aforementioned solder foot 204 is perpendicular to the extension direction of the aforementioned contact arm 201.

[0042] In this embodiment, the aforementioned partition wall 102 separates two adjacent sets of contact arms 201 in the same terminal assembly in the lateral direction. Specifically, the aforementioned first partition 1022 separates two adjacent sets of contact arms 201 in the same terminal assembly in the lateral direction. The aforementioned notch 1041 is provided at a position corresponding to the bent portion of the second terminal 22 of the lower row terminal assembly 2b, thereby making the assembly process smoother and preventing the bent portion from interfering with the lateral wall 104.

[0043] Please refer to Figures 5 and 7. The contact arms 201 of each of the aforementioned power terminals 2 are arranged in at least two groups in the lateral direction. Each group of contact arms 201 in each power terminal is marked as g in Figure 7. As shown in Figure 7, the distance D1 between two adjacent groups of contact arms 201 in the lateral direction is greater than the distance D2 between two adjacent contact arms 201 in the same group. This allows the contact arms 201 of the aforementioned first and second terminals 21 and 22 to be arranged in at least two groups after the terminal combination is formed, and to be cross-arranged to achieve balanced insertion and extraction forces.

[0044] In this embodiment, by configuring each power terminal 2 to have a base portion 202 and at least two sets of contact arms 201 extending forward from the front end of the base portion 202, the conductor area of ​​each power terminal 2 in the lateral direction is increased, thereby effectively increasing the conductive path of the terminal assembly and suppressing the heating of the power terminal.

[0045] In some embodiments of the present invention, the aforementioned second terminal 22 is provided with a recessed groove 205, which is formed by recessing backward from the front end of the aforementioned base portion 202, and the aforementioned connecting portion 1021 is inserted backward into the aforementioned groove 205.

[0046] In the embodiment shown in this invention, the aforementioned first terminal 21 also has a groove 205 formed by recessing from the front end of its base portion 202 to the rear. The aforementioned first spacer portion 1022 is inserted rearward into the groove 205 of the aforementioned first terminal 21 to further limit the aforementioned power terminal in the lateral direction.

[0047] The aforementioned second spacer 1023 is inserted rearward into the space between the base portions 202 of the corresponding first and second terminals 21 and 22 in the height direction, so that the aforementioned base portions 202 are clamped in the height direction by two adjacent of the aforementioned second spacer 1023, the aforementioned transverse wall 104, the aforementioned top wall 105 of the aforementioned insulating body 1, and the aforementioned bottom wall 106 of the aforementioned insulating body 1, thereby further limiting the aforementioned power terminals in the height direction.

[0048] In the aforementioned upper terminal assembly 2a, the base portion 202 of the first terminal 21 is sandwiched between the top wall 105 of the aforementioned insulating body 1 and the aforementioned second spacer portion 1023 in the height direction, and the base portion 202 of the second terminal 22 in the aforementioned upper terminal assembly 2a is sandwiched between the aforementioned second spacer portion 1023 and the aforementioned transverse wall 104 in the height direction.

[0049] In the aforementioned lower terminal assembly 2b, the base portion 202 of the first terminal 21 is sandwiched between the aforementioned second spacer portion 1023 and the bottom wall 106 of the aforementioned insulating body 1 in the height direction, and the base portion 202 of the second terminal 22 in the aforementioned lower terminal assembly 2b is sandwiched between the aforementioned second spacer portion 1023 and the aforementioned transverse wall 104 in the height direction.

[0050] Furthermore, in this invention, the aforementioned docking cavity 101 is a space for accommodating the contact arm 201 of the aforementioned power terminal 2. As shown in Figure 10, the width W1 of the base portion 202 of the aforementioned first and second terminals 21 and 22 in the lateral direction is not less than 15% of the width W3 of the aforementioned docking cavity 101 in the lateral direction.

[0051] Thus, by setting the width W1 of the base portion 202 of the power terminal 2 in the lateral direction to be no less than 15% of the width W3 of the aforementioned mating cavity 101 in the lateral direction, the power connector 100 of the present invention can provide a single power terminal as wide as possible within the limited width range of the mating cavity 101, thereby increasing the conductive path and suppressing the heat generation of the power terminal.

[0052] Furthermore, the width W1 of the base portion 202 of the aforementioned first and second terminals 21 and 22 in the lateral direction is not less than 30% of the width W3 of the aforementioned docking cavity 101 in the lateral direction, thereby providing a wider range of single power terminals within the limited width range of the docking cavity 101, and thus more effectively improving the current carrying capacity of the power terminals.

[0053] Furthermore, the width W1 of the base portion 202 of the aforementioned first and second terminals 21 and 22 in the lateral direction is not less than 45% of the width W3 of the aforementioned docking cavity 101 in the lateral direction, thereby providing a single power terminal as wide as possible within the limited width range of the docking cavity 101, thereby more effectively improving the current carrying capacity of the power terminal.

[0054] In this embodiment, in the same terminal assembly, at least a portion of the contact arm 201 of the aforementioned second terminal 22 extends into the gap between two adjacent contact arms 201 of the first terminal 21.

[0055] Specifically, as shown in Figures 3 and 4, in some embodiments, the contact arms 201 of the first and second terminals 21 and 22 are arranged alternately in the same terminal assembly; in other embodiments, the contact arms 201 of the second terminal 22 may be divided into two groups spaced apart in the lateral direction, and the contact arms 201 of the first terminal 21 may be arranged between the two groups of contact arms 201 of the second terminal 22 in the lateral direction; in other embodiments, in the same terminal assembly, the contact arms 201 of the first terminal 21 may be arranged adjacent to each other, and the contact arms 201 of the second terminal 22 may be arranged adjacent to each other, and the contact arms 201 of the first terminal 21 may be arranged on one side of the contact arms 201 of the second terminal 22 in the lateral direction.

[0056] In some embodiments of the present invention, the aforementioned insulating body 1 further has a plurality of heat dissipation channels 107 formed on its top wall 105, the aforementioned heat dissipation channels 107 penetrating the aforementioned top wall 105 along the height direction, so as to dissipate the heat generated by the power terminal 2 when it is powered on as quickly as possible.

[0057] In this invention, the aforementioned power connector 100 further has a plurality of signal terminals 3 located on one side of the aforementioned power terminal 2 in the lateral direction, each of the aforementioned signal terminals 3 having a mating arm 31 and a soldering part 32.

[0058] In another embodiment of the power connector 100 of the present invention, similar to the previous embodiment, the power connector 100 includes an insulating body 1 and at least one power terminal pair. The insulating body 1 has a terminal groove 103 extending in the front-rear direction. The power terminal pair is fixed in the terminal groove 103 of the insulating body 1. Each power terminal pair includes an upper row terminal assembly 2a and a lower row terminal assembly 2b arranged opposite each other in the height direction with contact arms 201. Each of the upper row terminal assembly 2a and the lower row terminal assembly 2b includes a first terminal 21 and a second terminal 22. Each of the first terminal 21 and the second terminal 22 has a base portion 202 and at least one of the aforementioned contact arms 201 extending forward from the base portion 202.

[0059] The difference is that in this modified embodiment, in the same terminal combination 2a, 2b, each of the aforementioned first and second terminals 21, 22 has only one set of contact arms 201, that is, each contact arm 201 is evenly arranged in the lateral direction, that is, in the lateral direction, the distance between two adjacent contact arms 201 is equal; instead of having at least two sets of contact arms 201 as in the first embodiment of the first and second terminals 21, 22.

[0060] The power connector 100 of the present invention optimizes the ratio (t / H) of the material thickness t of the power terminal 2 to the height H of the mating portion 10, so that the ratio of the material thickness t of the power terminal 2 to the height H of the mating portion 10 is in the range of 4.44% to 9.85%, thereby improving the current carrying capacity while ensuring mechanical strength and structural stability to meet the miniaturization requirements of high power density applications.

[0061] It should be particularly noted that, for those skilled in the art, any equivalent changes made to this invention under the guidance of this invention should still be included within the scope claimed in the claims of this invention. [Simplified Explanation of the Diagram]

[0062] Figure 1 is a perspective assembly view of the power connector of the present invention. Figure 2 is a view of the power connector shown in Figure 1 from another perspective. Figure 3 is an exploded perspective view of the power connector shown in Figure 1. Figure 4 is a partially exploded view of a terminal assembly of the power connector shown in Figure 3. Figure 5 is a further exploded view of the terminal assembly shown in Figure 4. Figure 6 is a top view of a terminal assembly of the power connector shown in Figure 3. Figure 7 is a top view of the first terminal in the upper row of terminal assemblies of the power connector shown in Figure 3. Figure 8 is a partially enlarged view of the insulating body of the power connector shown in Figure 3. Figure 9 is a cross-sectional view of the insulating body of the power connector shown in Figure 3. Figures 10 to 12 are cross-sectional views of the power connector shown in Figure 1.

Claims

1. A power connector comprising an insulating body and a plurality of power terminals disposed within the insulating body, the insulating body having a mating portion having a mating cavity and a terminal slot communicating with the mating cavity, each power terminal having a base portion fixed within the terminal slot and a contact arm extending forward from the base portion to protrude into the mating cavity; wherein the ratio of the material thickness of the power terminal to the height of the mating portion is in the range of 4.44% to 9.85%, the contact arms of the power terminals are arranged in a row along the transverse direction of the insulating body, and the power terminals corresponding to the same row of contact arms form at least one terminal assembly, each terminal assembly including at least two power terminals, the base portions of the two power terminals being arranged in the height direction of the insulating body.

2. The power connector as described in claim 1, wherein the ratio of the material thickness of the aforementioned power terminal to the height of the aforementioned mating portion is in the range of 4.71% to 9.14%.

3. The power connector as described in claim 1, wherein the ratio of the material thickness of the aforementioned power terminal to the height of the aforementioned mating portion is in the range of 5.00% to 8.53%.

4. The power connector as described in claim 1, wherein the ratio of the material thickness of the aforementioned power terminal to the height of the aforementioned mating portion is in the range of 5.33% to 8.00%.

5. The power connector as described in claim 1, wherein the aforementioned terminal assembly includes an upper row of terminal assemblies and a lower row of terminal assemblies with contact arms disposed opposite each other in the height direction, and the contact arms of each terminal assembly are arranged in at least two groups arranged side by side in the lateral direction, wherein the distance between two adjacent groups of contact arms is greater than the distance between two adjacent contact arms in the same group.

6. The power connector as described in claim 5, wherein the contact arms of each power terminal are arranged in at least two groups side by side in the lateral direction, and the distance between two adjacent groups of contact arms in the lateral direction is greater than the distance between two adjacent contact arms in the same group.

7. The power connector as described in claim 5, wherein each of the aforementioned terminal slots is provided with at least one spacer wall that separates two adjacent sets of contact arms in the lateral direction.

8. The power connector as described in claim 7, wherein the aforementioned insulating body has a transverse wall extending in a transverse direction, the transverse wall dividing the terminal slot into two groups corresponding to the upper row of terminal assemblies and the lower row of terminal assemblies respectively, and each of the aforementioned spacers extending in a front-rear direction and having a connecting portion connected to the aforementioned transverse wall.

9. The power connector as described in claim 1, wherein each terminal assembly includes a first terminal and a second terminal, and in the same terminal assembly, at least a portion of the contact arm of the second terminal extends into the gap between two adjacent contact arms of the first terminal.

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