High-voltage control box with series-parallel connection

Abstract

This utility model belongs to the field of control electrical appliances, specifically relating to a high-voltage control box that accommodates both series and parallel connections. It includes: a housing; and a first relay and a second relay disposed within the housing. The first contact of the first relay has a first copper busbar, and the first contact of the second relay has a second copper busbar. The second contacts of the first and second relays are connected via series and parallel copper busbars. The first copper busbar, the second copper busbar, and the series and parallel copper busbars are used to connect the first and second relays to an external circuit system. The circuit system can switch between the series and parallel connections of the first and second relays by connecting different copper busbars to its input terminals. This utility model solves the problem of the lack of universality in the relay connection methods of existing control boxes.

Description

Technical Field

[0001] This utility model belongs to the field of control electrical appliances, specifically relating to a high-voltage control box that can accommodate both series and parallel connection methods. Background Technology

[0002] High-voltage control boxes are widely used in electric vehicles, high-voltage power systems, industrial automation equipment, and other fields to centrally control and manage the connection, disconnection, and fault protection of high-voltage circuits. The control box typically integrates multiple relays, fuses, current sensors, and other components, and interacts with external control signals through an internal circuit board to achieve functions such as switching control of high-voltage circuits, power management, and status monitoring.

[0003] In existing technologies, high-voltage control boxes in electric vehicles are typically designed to only support a single type of relay connection, either in series or in parallel. This type of design is often based on a pre-defined connection mode according to specific control logic requirements, making it difficult to switch flexibly according to actual system needs.

[0004] For example, in scenarios where power can only be supplied after multiple signals are satisfied, control boxes typically use relays in series for interlocking control; while in scenarios where multiple subsystems need to be triggered by any one of them to start a shared load, relays in parallel are used. However, the internal structure, electrical layout, and signal processing methods of existing high-voltage control boxes are often deeply tied to the selected connection method, making them incompatible with the mixed or switched use of series and parallel connections.

[0005] Therefore, if user needs or system strategies change and the relay connection method needs to be changed, it is often necessary to replace the control box or make complex modifications to it. This not only increases development costs, but also limits the versatility and flexibility of the control box in various application scenarios. Utility Model Content

[0006] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a high-voltage control box that can accommodate both series and parallel connection methods, thereby solving the problem that the relay connection method of the high-voltage control box in the prior art can only be applied to a certain connection condition and lacks versatility.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A high-voltage control box that accommodates both series and parallel connection methods includes: A housing; and a first relay and a second relay disposed within the housing. The first contact of the first relay is provided with a first copper busbar, and the first contact of the second relay is provided with a second copper busbar. The second contacts of the first relay and the second contacts of the second relay are connected by series and parallel copper busbars. The first copper busbar, the second copper busbar, and the series-parallel copper busbar are used to connect the first relay and the second relay to an external circuit system. The circuit system can switch the series and parallel connection of the first relay and the second relay by connecting different copper busbars at its input terminals.

[0008] In one embodiment of this utility model, the second relay is arranged in a direction parallel to the length direction of the housing, the first relay is arranged in a direction perpendicular to the second relay, that is, parallel to the width direction of the housing, and the second contact of the first relay is close to the second contact of the second relay; the first copper busbar and the series-parallel copper busbar extend along the length direction of the housing, and the second copper busbar extends along the width direction of the housing.

[0009] In one embodiment of this utility model, there are two first relays and two second relays, with the two second relays located between the two first relays.

[0010] In one embodiment of this utility model, the high-voltage control box further includes: a third relay disposed within the housing; a third copper busbar is provided on the first contact of the third relay; the second contact of the third relay is connected to the first contact of the second relay via another series of parallel copper busbars; the first copper busbar, the second copper busbar, the third copper busbar, the series-parallel copper busbars, and the other series-parallel copper busbars are used to connect the first relay, the second relay, and the third relay to the circuit system; the circuit system can switch the series and parallel connections between the first relay, the second relay, and the third relay by connecting different copper busbars to its input terminals.

[0011] In one embodiment of this utility model, the outer shell includes an upper cover and a lower shell, the lower shell having a cavity for accommodating a relay, and the upper cover being fixed to the lower shell and covering the cavity.

[0012] In one embodiment of this utility model, the housing is provided with a contact through hole for exposing the first and second contacts of the relay to the housing; or the housing is provided with a copper busbar through hole for extending the copper busbar out of the housing.

[0013] In one embodiment of this utility model, the high-voltage control box further includes multiple coil copper busbars. The first relay and the second relay are electromagnetic relays. One end of each of the multiple coil copper busbars is connected to the coil contacts of the first relay and the second relay, respectively. The other end of each of the multiple coil copper busbars is used to connect to an external power source to supply power to the coils of the first relay and the second relay.

[0014] In one embodiment of this utility model, the high-voltage control box further includes multiple signal acquisition copper busbars. One end of each of the multiple signal acquisition copper busbars is connected to the first copper busbar, the second copper busbar, and the series-parallel copper busbar, respectively. The other end of each of the multiple signal acquisition copper busbars is used to connect to an external signal acquisition device, so that the signal acquisition device can collect parameters of the current flowing through the first copper busbar, the second copper busbar, and the series-parallel copper busbar.

[0015] In one embodiment of this utility model, multiple signal acquisition copper busbars and multiple coil copper busbars are arranged on the same side of the housing.

[0016] As one embodiment of this utility model, the first relay and the second relay are further provided with copper busbar supports for supporting the plurality of signal acquisition copper busbars.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: by connecting series and parallel copper busbars between a certain contact of each of the multiple relays in the high-voltage control box, the circuit system can switch the series and parallel connection of multiple relays by switching the connection between its input terminal and the copper busbar on the relay, so that the high-voltage controller can be used for both series and parallel connection methods at the same time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a structural schematic diagram of the high-voltage control box in the upright position according to a specific embodiment of the present invention; Figure 2 This is a schematic diagram of the high-voltage control box in an inverted state according to a specific embodiment of the present invention; Figure 3 This is an exploded view of a high-voltage control box according to a specific embodiment of the present invention; Figure 4 This is a schematic diagram of the high-voltage control box in an inverted state when the outer casing is removed; Figure 5 This is a bottom view of the high-voltage control box when the contact copper busbars are removed; Figure 6 This is a bottom view of the high-voltage control box with the outer casing removed; Figure 7 This is a top view of the high-voltage control box with the outer casing removed; Figure 8This is a schematic diagram of the relay in the inverted state; Figure 9 This is a schematic diagram of the relay in the positive position.

[0020] Explanation of reference numerals in the attached figures: 1: Outer shell, 11: Upper cover, 12: Lower shell, 121: Chamber; 2: Relay; 21: First relay; 22: Second relay; 210, 220: Upper housing; 211, 221: First contact; 212, 222: Second contact; 213, 223: Electromagnetic coil section; 214, 224: Connecting contact; 215, 225: Copper busbar support. 3: Elastic pad; 4: Contact copper busbar, 41: First copper busbar, 42: Second copper busbar, 43: Series and parallel copper busbar; 5: Low-voltage copper busbar, 51: Coil copper busbar, 52: Signal acquisition copper busbar. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model. Furthermore, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present utility model and are not intended to limit the present utility model.

[0022] In this utility model, unless otherwise stated, directional terms such as "up", "down", "left", "right", "front", and "back" generally refer to the up, down, left, and right directions in the actual use or working state of the device, specifically the directions shown in the accompanying drawings.

[0023] It should be noted that the order of description of the following embodiments is not intended to limit the preferred order of the embodiments of this application. Furthermore, the descriptions of each embodiment in the following embodiments have their own emphasis; for parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0024] like Figures 1 to 9The diagram illustrates a high-voltage control box that accommodates both series and parallel configurations according to a specific embodiment of the present invention. It includes an outer shell 1 composed of an upper cover 11 and a lower shell 12, and a relay 2 disposed within the outer shell 1. Specifically, the lower shell 12 has at least one chamber 121 for accommodating the relay 2; in this embodiment, there are four chambers 121, and therefore four relays 2, but this is not a limitation; there could be four or fewer relays. The upper cover 11 is fixed to the upper opening of the lower shell 12 and covers the chambers 121.

[0025] Furthermore, relay 2 includes two first relays 21 and two second relays 22, with the two second relays 22 located between the two first relays 21. Specifically, the two second relays 22 are arranged parallel to the length direction of the housing 1, and the two first relays 21 are arranged perpendicular to the second relays 22, i.e., parallel to the width direction of the housing 1, so that the four relays form a "two horizontal in the middle and two vertical on both sides" arrangement within the housing 1. That is, the first relays 21 and 22 on one side are arranged in an "L"-shaped mirror symmetry with the first relays 21 and 22 on the other side. Here, the connection structure of the first relays 21 and 22 on both sides is also mirror symmetric, so only the connection structure of the first relays 21 and 22 on one side will be described, omitting the description of the other side. This arrangement facilitates the connection of the contact copper busbar 4, which will be described later.

[0026] Reference Figures 1 to 9 The high-voltage control box also has multiple contact copper busbars 4 for connecting the contacts of the relay 2 to the external circuit system. Specifically, the bottom of the chamber 121 has two contact through holes. The relay 2 is inverted and disposed inside the chamber 121 with its contact ends facing the bottom of the chamber 121. Its contacts protrude from the contact through holes into the outer casing 1 and are then connected to the contact copper busbars 4. Alternatively, the contact copper busbars 4 can be connected to the relay contacts inside the casing, with their tips extending out of the casing from the copper busbar through holes on the outer casing 1. Alternatively, some contact copper busbars 4 can be outside the outer casing 1, while others can be inside the outer casing 1. Alternatively, part of the contact copper busbars 4 can be inside the outer casing 1, and part can be outside the outer casing 1.

[0027] Specifically, the contact copper busbar 4 includes a first copper busbar 41, a second copper busbar 42, and a series-parallel copper busbar 43. Each relay 2 has first contacts 211 and 221, and second contacts 212 and 222. The first copper busbar 41 is connected to the first contact 211 of the first relay 21, and the second copper busbar 42 is connected to the first contact 221 of the second relay 22. The relays are arranged such that the second contact 212 of the first relay 21 and the second contact 222 of the second relay 22 are adjacent to each other. Their second contacts 212 and 222 are connected via the series-parallel copper busbar 43. This circuit system can switch between the series and parallel connections of the first relay 21 and the second relay 22 by connecting different copper busbars 41, 42, and 43 to its input terminals. Specifically, when the circuit system is disconnected from the series-parallel copper busbar 43 and only the first copper busbar 41 and the second copper busbar 42 are connected (for example, one input terminal of the circuit system is connected to the first copper busbar 41, and the other input terminal is connected to the second copper busbar 42), the first relay 21 and the second relay 22 are connected in series in the circuit system through the series-parallel copper busbar 43; when the circuit system connects the series-parallel copper busbar 43, the first copper busbar 41, and the second copper busbar 42 (for example, one input terminal of the circuit system is connected to the series-parallel copper busbar 43, and the other input terminal is connected to the first copper busbar 41 and the second copper busbar 42), the first relay 21 and the second relay 22 are connected in parallel in the circuit system through the series-parallel copper busbar 43. Therefore, the high-voltage controller of this invention can be applied to both series and parallel connection methods, improving the versatility of the high-voltage controller.

[0028] In one specific embodiment, the high-voltage control box further includes: a third relay (not shown) disposed within the housing 1, a third copper busbar (not shown) on the first contact of the third relay, and the second contact of the third relay connected to the first contact of the second relay via another series of parallel copper busbars (not shown). The first copper busbar, the second copper busbar, the third copper busbar, the series-parallel copper busbar, and the other series of parallel copper busbars extend out of the housing for connecting the first relay, the second relay, and the third relay to the circuit system. The circuit system can switch the series and parallel connections between the first relay, the second relay, and the third relay by connecting different copper busbars to its input terminals.

[0029] In one specific embodiment, reference is made to Figure 1 and Figure 2 The first copper busbar 41 and the series-parallel copper busbar 43 are located outside the housing 1. A part of the second copper busbar 42 is located outside the housing 1 and connected to the second contact 222, while the other part is located inside the housing 1 and its end extends out of the housing 1 through the copper busbar through hole.

[0030] Reference Figures 3 to 9In one specific embodiment, the relay 2 is an electromagnetic relay, and its moving contact driving source is the battery coil section 213, 223. The battery coil section 213, 223 is located on the side of the upper cover 11, and its coil connection contacts 214, 224 are close to the upper cover 11, that is, opposite to the orientation of the contacts of the relay 2. The high-voltage control box also has multiple low-voltage copper busbars 5. The low-voltage copper busbars 5 include coil copper busbars 51 for connecting the connection contacts 214, 224 of the relay 2 to an external power supply; and signal acquisition copper busbars 52 for connecting the contacts of the relay 2 to a signal acquisition device to acquire the current signal of the circuit system. In one specific embodiment, the low-voltage copper busbar 5 is injection molded inside the upper cover 11. When the upper cover 11 is fixed to the lower housing 12, one end of the coil copper busbar 51 directly abuts against the connection contacts 214 and 224 of the relay 2, and the other end extends out of one side of the upper cover 11. One end of the signal acquisition copper busbar 52 extends out of the upper cover 11 and is connected to the contact copper busbar 4. Its other end also extends out of one side of the upper cover 11. The other end of the coil copper busbar 51 and the other end of the signal acquisition copper busbar 52 are located on the same side of the housing 1 to facilitate connection with external devices.

[0031] In one specific embodiment, although not shown, a support and guide structure is provided within the chamber 121 to support and position the relay 2 at a predetermined position within the chamber 121. This predetermined position may be, for example, the center of the chamber. The support and guide structure may be, for example, a plurality of support and guide protrusions (not shown) disposed on the sidewall of the chamber 121, defining the predetermined position. For example, the plurality of support and guide protrusions are respectively disposed circumferentially on the sidewall of the chamber 121 and extend into the chamber 121, thereby defining the predetermined position for mounting the relay 2. The plurality of support and guide protrusions can also serve as reinforcing ribs to improve the structural rigidity and strength of the high-voltage control box. Furthermore, the support and guide structure may also be a support protrusion at the opening of the chamber 121, which can reduce the weight of the high-voltage control box compared to protrusions. The support and guide structure may also be other structures, such as guide grooves, in which case corresponding guide sliders or guide ribs need to be provided on the relay.

[0032] Reference Figures 1 to 3 In one specific embodiment, the upper cover 11 and the lower housing 12 are secured together by multiple snap-fits and slots. Specifically, the upper side wall of the lower housing 12 is provided with multiple slots, and the upper cover 11 is provided with multiple snap-fits corresponding to the slots. The snap-fits are respectively engaged in the slots, thereby securing the upper cover 11 and the lower housing 12 together. When it is necessary to remove the upper cover 11 to maintain the relay 2, it can be disassembled simply by releasing the snap-fits from the slots, improving the convenience of relay maintenance.

[0033] Reference Figure 3 and Figure 8In one specific embodiment, an elastic pad 3 is provided between the relay 2 and the upper cover 11. This elastic pad 3 is deformed by the compression of the relay 2 and the upper cover 11, generating an elastic force (i.e., elastic restoring force). Under this elastic force, the relay 2 is pressed downwards, and subsequently, the relay 2 is pressed into the cavity 121 by the upper cover 11, the elastic pad 3, and the lower housing 12. Therefore, fixing the relay by pressing simplifies the installation process, and the elastic force of the elastic pad provides a more stable fixation of the relay.

[0034] In one specific embodiment, the elastic pad 3 is an elastic heat dissipation pad with high thermal conductivity, which can dissipate heat for the relay.

[0035] Reference Figure 8 and Figure 9 In one specific embodiment, the relay 2 is a half-shell relay, with its contact portion covered by the upper housing 210 and 220, while the electromagnetic coil portions 213 and 223 are exposed. The half-shell relay is inverted in the chamber 121 with the contact portion located on the side away from the upper housing and the electromagnetic coil portions 213 and 223 located on the side closer to the upper housing. The bottom surface of the upper housing is provided with a positioning post, which is inserted into the center hole (center hole of the coil frame) of the coil portion 22 to position the relay 2. Thus, the relay is further fixed by the positioning post of the upper housing, improving the stability of the fixation.

[0036] Reference Figure 3 , Figure 7 and Figure 8 In one specific embodiment, the bottom of the relay 2 is also provided with copper busbar supports 215 and 225 for fixing the signal acquisition copper busbar 52, so as to enhance the stability of the signal acquisition copper busbar 52.

[0037] Furthermore, the lower housing 12 can be a single, integral housing or assembled from multiple separate housings each having a chamber 121. Similarly, the upper cover 11 can be a single, integral cover or assembled from multiple separate cover plates. This invention does not limit the specific form of the housing.

[0038] In addition, although not shown in the figure, the high-voltage control box of this utility model may also contain other components such as fuses and current sensors.

[0039] The solution of this application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

[0040] Throughout this specification, the terms "an embodiment," "embodiment," or "specific embodiment" refer to a particular feature, structure, or characteristic described in connection with an embodiment that is included in at least one embodiment of this application, but not necessarily in all embodiments. Therefore, the various representations of the phrases "in one embodiment," "in an embodiment," or "in a specific embodiment" in different places throughout this specification do not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic of any specific embodiment of this application may be combined with one or more other embodiments in any suitable manner. It should be understood that other variations and modifications of the embodiments described and illustrated herein may be based on the teachings herein and will be considered part of the spirit and scope of this application.

[0041] It should also be understood that one or more of the elements shown in the figures may be implemented in a more separate or more integrated manner, or may even be removed because they are inoperable in certain circumstances or provided because they may be useful for a particular application.

[0042] Furthermore, unless otherwise expressly stated, any arrows in the accompanying drawings should be considered illustrative only and not limiting. Additionally, unless otherwise stated, the term "or" as used herein is generally intended to mean "and / or". Where a term is anticipated to provide a separation or combination capability that is unclear, a combination of components or steps will also be considered as indicated.

Claims

1. A high-voltage control box that accommodates both series and parallel connection methods, characterized in that, include: A housing; and a first relay and a second relay disposed within the housing. The first contact of the first relay is provided with a first copper busbar, and the first contact of the second relay is provided with a second copper busbar. The second contacts of the first relay and the second contacts of the second relay are connected by series and parallel copper busbars. The first copper busbar, the second copper busbar, and the series-parallel copper busbar are used to connect the first relay and the second relay to an external circuit system. The circuit system can switch the series and parallel connection of the first relay and the second relay by connecting different copper busbars at its input terminals.

2. The high-voltage control box according to claim 1, characterized in that, The second relay is set in a direction parallel to the length direction of the housing, and the first relay is set in a direction perpendicular to the second relay, i.e., parallel to the width direction of the housing, and the second contact of the first relay is close to the second contact of the second relay. The first copper busbar and the series-parallel copper busbars extend along the length direction of the housing, and the second copper busbar extends along the width direction of the housing.

3. The high-voltage control box according to claim 2, characterized in that, There are two relays, the first and the second, with the two second relays located between the two first relays.

4. The high-voltage control box according to claim 1, characterized in that, It also includes a third relay disposed within the housing, wherein the first contact of the third relay is provided with a third copper busbar, and the second contact of the third relay is connected to the first contact of the second relay through another series of parallel copper busbars. The first copper busbar, the second copper busbar, the third copper busbar, the series-parallel copper busbar, and the other series-parallel copper busbar are used to connect the first relay, the second relay, the third relay, and the circuit system. The circuit system can switch the series and parallel connections between the first relay, the second relay, and the third relay by connecting different copper busbars to its input terminals.

5. The high-voltage control box according to any one of claims 1 to 4, characterized in that, The outer casing includes an upper cover and a lower housing. The lower housing has a chamber for accommodating a relay. The upper cover is fixed to the lower housing and covers the chamber.

6. The high-voltage control box according to claim 5, characterized in that, The housing is provided with contact through holes for exposing the first and second contacts of the relay to the housing; or the housing is provided with copper busbar through holes for extending the copper busbar out of the housing.

7. The high-voltage control box according to claim 1, characterized in that... It also includes multiple coil copper busbars, and the first and second relays are electromagnetic relays. One end of each of the multiple coil copper busbars is connected to the coil contacts of the first relay and the second relay, respectively, and the other end of each of the multiple coil copper busbars is used to connect to an external power source to supply power to the coils of the first relay and the second relay.

8. The high-voltage control box according to claim 7, characterized in that, It also includes multiple signal acquisition copper busbars, one end of each of the multiple signal acquisition copper busbars being connected to the first copper busbar, the second copper busbar and the series-parallel copper busbar respectively, and the other end of each of the multiple signal acquisition copper busbars being used to connect to an external signal acquisition device, so that the signal acquisition device can collect parameters of the current flowing through the first copper busbar, the second copper busbar and the series-parallel copper busbar.

9. The high-voltage control box according to claim 8, characterized in that, Multiple signal acquisition copper busbars and multiple coil copper busbars are arranged on the same side of the housing.

10. The high-voltage control box according to claim 8, characterized in that, The first relay and the second relay are also provided with copper busbar supports for supporting the plurality of signal acquisition copper busbars.

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