Battery distribution unit box and battery pack

Abstract

A battery power distribution unit box and battery pack are disclosed, relating to the field of battery power distribution technology. The battery power distribution unit box includes a first relay, a pre-charge resistor, a pre-charge relay, a second relay, a high-voltage sampling socket, a low-voltage control socket, and a circuit board. A first detection conductive post, the pre-charge resistor, the high-voltage control terminal of the pre-charge relay, and a first adhesive conductive post are connected in series via wiring on the circuit board. The first detection conductive post, the first adhesive conductive post, the second adhesive conductive post, and the second detection conductive post are respectively electrically connected to the high-voltage sampling socket via wiring on the circuit board. The low-voltage control terminals of the first relay, the second relay, and the pre-charge relay are respectively electrically connected to the low-voltage control socket via wiring on the circuit board. This utility model provides a battery power distribution unit box and battery pack to solve the technical problems of low automation, manual operation, time-consuming and error-prone cable connection methods in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of battery power distribution technology, and more specifically, to a battery power distribution unit box and a battery pack. Background Technology

[0002] In the assembly of electric vehicles, the battery distribution unit (BDU) is a crucial electronic control component. A well-designed BDU can reduce the installation space required for automotive components, lower the overall vehicle installation cost, and improve the reliability of the battery management system (BMS).

[0003] Currently, the electrical components housed in the battery power distribution unit box primarily use cable connections for control and detection. However, cable connections have low automation, require manual installation, are time-consuming, and prone to errors. For example, during operation, momentary interruptions may occur due to poor crimping of the male and female terminals of the cable, which can easily affect the control of the entire battery pack and cause the vehicle to malfunction. Utility Model Content

[0004] The purpose of this utility model is to provide a battery power distribution unit box and battery pack, so as to solve to a certain extent the technical problems of low automation of cable connection method, manual operation, time-consuming and error-prone in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A battery power distribution unit box includes a first relay, a pre-charge resistor, a pre-charge relay, a second relay, a high-voltage sampling socket, a low-voltage control socket, and a circuit board;

[0007] The low-voltage control terminal of the first relay, the low-voltage control terminal of the second relay, the pre-charge resistor, the high-voltage sampling socket, and the low-voltage control socket are all connected to the circuit board; the low-voltage control terminal and the high-voltage control terminal of the pre-charge relay are both connected to the circuit board.

[0008] The first detection conductive post is connected between the first end of the high voltage control terminal of the first relay and the circuit board, and the first adhesive conductive post is connected between the second end of the high voltage control terminal of the first relay and the circuit board.

[0009] The second detection conductor is connected between the first end of the high-voltage control terminal of the second relay and the circuit board, and the second adhesive conductive post is connected between the second end of the high-voltage control terminal of the second relay and the circuit board.

[0010] The first detection conductive post, the pre-charge resistor, the high-voltage control terminal of the pre-charge relay, and the first adhesive conductive post are connected in series using the circuitry on the circuit board.

[0011] The first detection conductive post, the first adhesion conductive post, the second adhesion conductive post, and the second detection conductive body are respectively electrically connected to the high-voltage sampling socket via the circuit board.

[0012] The low-voltage control terminals of the first relay, the second relay, and the precharge relay are respectively electrically connected to the low-voltage control socket via lines on the circuit board.

[0013] In any of the above technical solutions, optionally, the battery power distribution unit box further includes a Hall sensor, a fuse, a Hall busbar, a fuse busbar, and a first relay busbar;

[0014] The Hall sensor is connected to the Hall busbar; the first end of the Hall busbar is configured to be electrically connected to the positive terminal of the battery pack, and the second end of the Hall busbar is electrically connected to the first end of the fuse; the second end of the fuse is electrically connected to the fuse busbar.

[0015] The first end of the high-voltage control terminal of the first relay and the first detection conductive post are both electrically connected to the fuse busbar, and the second end of the high-voltage control terminal of the first relay and the first adhesive conductive post are both electrically connected to the first relay busbar; the first relay busbar is configured to be electrically connected to the positive output terminal socket of the battery pack.

[0016] In any of the above technical solutions, optionally, the battery power distribution unit box further includes a first temperature sensor for detecting the temperature of the fuse and a second temperature sensor for detecting the temperature of the first relay;

[0017] The first end of the first temperature sensor is electrically connected to the fuse busbar, and the second end of the first temperature sensor is electrically connected to the circuit board.

[0018] The first end of the second temperature sensor is electrically connected to the first relay busbar, and the second end of the second temperature sensor is electrically connected to the circuit board.

[0019] The first temperature sensor and the second temperature sensor are respectively electrically connected to the low-voltage control socket via the circuit on the circuit board.

[0020] In any of the above technical solutions, optionally, one end of the first detection conductive post is screwed onto the circuit board, and the other end is screwed onto the fuse conductor.

[0021] One end of the first adhesive conductive post is screwed onto the circuit board, and the other end is screwed onto the first relay conductive bar;

[0022] Both the first detection conductive post and the first adhesion conductive post are made of copper.

[0023] In any of the above technical solutions, optionally, the battery power distribution unit box includes intersecting first and second directions; the Hall sensor, the fuse, the pre-charge resistor, the first relay, and the second relay are arranged sequentially along the first direction;

[0024] Along the second direction, the circuit board is located on one side of the first relay, and the Hall busbar, the fuse busbar, and the first relay busbar are all located on the corresponding other side of the first relay.

[0025] In any of the above technical solutions, optionally, the battery power distribution unit box further includes a shunt, a second relay busbar, a shunt busbar, and a second busbar;

[0026] The second conductive bus is configured to be electrically connected to the main negative terminal of the battery pack; the first end of the shunt is electrically connected to the second conductive bus, and the second end of the shunt is electrically connected to the shunt conductive bus;

[0027] The first end of the high-voltage control terminal of the second relay is electrically connected to the shunt busbar, and the second end of the high-voltage control terminal of the second relay and the second adhesive conductive post are both electrically connected to the second relay busbar; the second relay busbar is configured to be electrically connected to the negative output terminal socket of the battery pack.

[0028] Optionally, in any of the above technical solutions, the second detection conductor is electrically connected to the second conductive busbar;

[0029] The second detection conductor is a conductive wire.

[0030] Optionally, in any of the above technical solutions, the battery power distribution unit box further includes a third temperature sensor for detecting the temperature of the second relay;

[0031] The first end of the third temperature sensor is electrically connected to the shunt busbar, and the second end of the third temperature sensor is electrically connected to the circuit board.

[0032] The third temperature sensor is electrically connected to the low-voltage control socket via the wiring on the circuit board.

[0033] In any of the above technical solutions, optionally, one end of the second adhesive conductive post is screwed onto the circuit board, and the other end is screwed onto the second relay conductive bar;

[0034] The second adhesive conductive post is made of copper.

[0035] A battery pack includes the aforementioned battery distribution unit box.

[0036] The main beneficial effects of this utility model are as follows:

[0037] The battery power distribution unit box and battery pack provided by this utility model include a first relay, a pre-charge resistor, a pre-charge relay, a second relay, a high-voltage sampling socket, a low-voltage control socket, and a circuit board. The high-voltage control terminal and low-voltage control terminal of the first relay, the high-voltage control terminal and low-voltage control terminal of the second relay, and the low-voltage control terminal and high-voltage control terminal of the pre-charge relay are all directly or indirectly electrically connected to the circuit board. The pre-charge resistor, the high-voltage sampling socket, and the low-voltage control socket are all electrically connected to the circuit board, which effectively improves the integration and automation of the battery power distribution unit box. In this battery distribution unit box, the first detection conductive post, the pre-charge resistor, the high-voltage control terminal of the pre-charge relay, and the first bonding conductive post are connected in series on a circuit board to form a pre-charge high-voltage circuit, effectively improving the integration and automation of the production process. The first detection conductive post and the first bonding conductive post not only meet the high current requirements of the pre-charge high-voltage circuit but also provide structural support. Furthermore, they can detect the voltage at the high-voltage control terminal of the first relay, enabling adhesion detection. The second detection conductive post and the second bonding conductive post can detect the voltage at the first and second terminals of the high-voltage control terminal of the second relay, facilitating adhesion detection and further enhancing the integration and automation of the battery distribution unit box. This battery distribution unit box, with its high degree of integration and automation, effectively reduces reliance on manual production, improving production efficiency, mitigating electrical connection risks, and enhancing the stability and reliability of the electrical circuits.

[0038] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0039] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 An electrical schematic diagram of the battery power distribution unit box provided in an embodiment of this utility model;

[0041] Figure 2 A schematic diagram of the structure of the battery power distribution unit box provided in an embodiment of this utility model;

[0042] Figure 3 An exploded view of the battery power distribution unit box provided in an embodiment of this utility model;

[0043] Figure 4 Another structural schematic diagram of the battery power distribution unit box provided in an embodiment of this utility model;

[0044] Figure 5 for Figure 4 The diagram shows the structure of the battery power distribution unit box without a circuit board.

[0045] Icons: 01-Hall sensor; 02-Fuse; 03-First relay; 04-Pre-charge resistor; 05-Pre-charge relay; 06-Second relay; 07-Shunt; 08-First detection conductive post; 09-First adhesive conductive post; 10-Second adhesive conductive post; 11-Second detection conductor; 12-First temperature sensor; 13-Second temperature sensor; 14-Third temperature sensor; 15-Circuit board; 16-High voltage sampling socket; 17-Low voltage control socket; 18-Fuse conductor bar; 19-First relay conductor bar; 20-Second relay conductor bar; 21-Shunt conductor bar; 22-Second conductor bar; 23-Bolt; 24-Hall conductor bar. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0047] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0048] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0049] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0050] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0051] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0052] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0053] This embodiment provides a battery power distribution unit box and a battery pack; please refer to... Figures 1-5 , Figure 1 This is a schematic diagram of the electrical principle of the battery power distribution unit box provided in this embodiment. Figures 2-5 These are schematic diagrams illustrating different structures of the battery power distribution unit box provided in this embodiment. Figure 1In the diagram, thick solid lines represent high-voltage circuits, and thin solid lines represent low-voltage circuits. Bat+ represents the overall positive terminal of the battery pack, Bat- represents the overall negative terminal of the battery pack, Hall represents Hall sensor 01, Pyro represents fuse 02, Shunt represents shunt 07, HV0 represents second detection conductor 11, HV1 represents second bonding conductor 10, HV2 represents first detection conductor 08, HV3 represents first bonding conductor 09, NTC1 represents first temperature sensor 12, NTC2 represents second temperature sensor 13, NTC3 represents third temperature sensor 14, K1 represents first relay 03, K2 represents second relay 06, K3 represents pre-charge relay 05, R1 represents pre-charge resistor 04, J1 represents high-voltage sampling socket 16, and J2 represents low-voltage control socket 17.

[0054] The battery power distribution unit box described in this embodiment includes a first relay 03, a pre-charge resistor 04, a pre-charge relay 05, a second relay 06, a high-voltage sampling socket 16, a low-voltage control socket 17, and a circuit board 15.

[0055] The low-voltage control terminal of the first relay 03, the low-voltage control terminal of the second relay 06, the pre-charge resistor 04, the high-voltage sampling socket 16, and the low-voltage control socket 17 are all connected to the circuit board 15; the low-voltage control terminal and the high-voltage control terminal of the pre-charge relay 05 are both connected to the circuit board 15.

[0056] The high-voltage control terminal of the first relay 03 includes a first terminal and a second terminal. A first detection conductive post 08 is connected between the first terminal of the high-voltage control terminal of the first relay 03 and the circuit board 15, serving both structural support and electrical connection functions. A first adhesion conductive post 09 is connected between the second terminal of the high-voltage control terminal of the first relay 03 and the circuit board 15, also serving both structural support and electrical connection functions. Through the first detection conductive post 08 and the first adhesion conductive post 09, the voltage between the first and second terminals of the high-voltage control terminal of the first relay 03 can be detected, which can be used for detecting adhesion at the high-voltage control terminal of the first relay 03. Relay adhesion detection is a crucial step in ensuring the safe and stable operation of the electrical system. Its core function is to promptly detect situations where relay contacts cannot disconnect normally due to faults, thereby preventing equipment malfunctions and circuit failures caused by contact adhesion.

[0057] The high-voltage control terminal of the second relay 06 includes a first terminal and a second terminal. A second detection conductor 11 connects the first terminal of the high-voltage control terminal of the second relay 06 to the circuit board 15; that is, the first terminal of the high-voltage control terminal of the second relay 06 is electrically connected to the circuit board 15 via the second detection conductor 11. A second adhesive conductive post 10 supports and connects the second terminal of the high-voltage control terminal of the second relay 06 to the circuit board 15; that is, the second adhesive conductive post 10 serves both structural support and electrical connection functions between the second terminal of the high-voltage control terminal of the second relay 06 and the circuit board 15. Through the second detection conductor 11 and the second adhesive conductive post 10, the voltage between the first and second terminals of the high-voltage control terminal of the second relay 06 can be detected, and this can be used for adhesion detection of the high-voltage control terminal of the second relay 06.

[0058] The high-voltage control terminal of the first detection conductive post 08, the pre-charge resistor 04, the pre-charge relay 05, and the first adhesive conductive post 09 are connected in series via lines on the circuit board 15. For example, the first detection conductive post 08 is connected to the front end of the pre-charge resistor 04 via lines on the circuit board 15, the rear end of the pre-charge resistor 04 is connected to the first end of the high-voltage control terminal of the pre-charge relay 05 via lines on the circuit board 15, and the second end of the high-voltage control terminal of the pre-charge relay 05 is connected to the first adhesive conductive post 09 via lines on the circuit board 15, thereby forming a pre-charge high-voltage circuit. Optionally, both the pre-charge resistor 04 and the pre-charge relay 05 are soldered onto the circuit board 15. In this embodiment, the first detection conductive post 08, the pre-charge resistor 04, the high-voltage control terminal of the pre-charge relay 05, and the first adhesive conductive post 09 are connected in series on the circuit board 15 to form a pre-charge high-voltage circuit. The first detection conductive post 08 and the first adhesive conductive post 09 can meet the large current of the pre-charge high-voltage circuit. In addition, the first detection conductive post 08 and the first adhesive conductive post 09 can also perform the adhesion detection function of the high-voltage control terminal of the first relay 03.

[0059] The first detection conductive post 08, the first adhesive conductive post 09, the second adhesive conductive post 10, and the second detection conductive body 11 are respectively connected to the high-voltage sampling socket 16 via the circuit board 15 (e.g., Figure 1 The J1) electrical connection is shown; for example, the first detection conductive post 08, the first adhesive conductive post 09, the second adhesive conductive post 10, and the second detection conductor 11 are respectively soldered onto the circuit board 15. The first detection conductive post 08, the first adhesive conductive post 09, the second adhesive conductive post 10, and the second detection conductor 11 are respectively electrically connected to the high-voltage sampling socket 16 via the lines on the circuit board 15. The high-voltage sampling socket 16 is then connected to the battery pack control plug so that various information can be sent to the battery management system (BMS), thereby forming a high-voltage detection loop.

[0060] The low-voltage control terminals of the first relay 03, the second relay 06, and the precharge relay 05 are respectively connected to the low-voltage control socket 17 via circuit boards 15 (e.g., ...). Figure 1 The J2 electrical connection is shown. For example, the low-voltage control terminals of the first relay 03, the second relay 06, and the precharge relay 05 are soldered to the circuit board 15 via through-hole terminals. By connecting all the low-voltage control and detection lines to the low-voltage control socket 17 through the lines on the circuit board 15, a temperature detection and relay control circuit is formed.

[0061] Optionally, the first detection conductive post 08 may be made of copper or other conductive material. By using a conductive post 08, the first relay 03 and the circuit board 15 can be mechanically connected, thereby fixing the first relay 03 and the circuit board 15 into a single unit.

[0062] Optionally, the first adhesive conductive post 09 may be made of copper or other conductive material. By using a conductive post, the first adhesive conductive post 09 can be mechanically connected to the first relay 03 and the circuit board 15, thereby fixing the first relay 03 and the circuit board 15 into a whole.

[0063] Optionally, the second adhesive conductive post 10 may be made of copper or other conductive material. By using a conductive post, the second adhesive conductive post 10 can be mechanically connected to the second relay 06 and the circuit board 15, thereby fixing the second relay 06 and the circuit board 15 into a whole.

[0064] Optionally, the second detection conductor 11 can be a conductive wire or other conductive material. The second detection conductor 11, using a conductive wire, flexibly connects the second relay 06 to the circuit board 15.

[0065] The battery power distribution unit box described in this embodiment includes a first relay 03, a pre-charge resistor 04, a pre-charge relay 05, a second relay 06, a high-voltage sampling socket 16, a low-voltage control socket 17, and a circuit board 15. The high-voltage and low-voltage control terminals of the first relay 03, the second relay 06, and the pre-charge relay 05 are all directly or indirectly electrically connected to the circuit board 15. The pre-charge resistor 04, the high-voltage sampling socket 16, and the low-voltage control socket 17 are all electrically connected to the circuit board 15, which effectively improves the integration and automation of the battery power distribution unit box. In this battery distribution unit box, the first detection conductive post 08, the pre-charge resistor 04, the high-voltage control terminal of the pre-charge relay 05, and the first bonding conductive post 09 are connected in series on the circuit board 15 to form a pre-charge high-voltage circuit, effectively improving the integration and automation of the battery distribution unit box. The first detection conductive post 08 and the first bonding conductive post 09 not only meet the high current requirements of the pre-charge high-voltage circuit but also provide structural support. Furthermore, they can also detect the voltage of the high-voltage control terminal of the first relay 03, enabling adhesion detection of the high-voltage control terminal. Through the second detection conductor 11 and the second bonding conductive post 10, the voltage of the first and second terminals of the high-voltage control terminal of the second relay 06 can be detected, enabling adhesion detection of the high-voltage control terminal of the second relay 06, further improving the integration and automation of the battery distribution unit box. This battery distribution unit box has a high degree of integration and automation, effectively reducing reliance on manual production. This not only improves production efficiency but also reduces electrical connection risks, and to a certain extent, enhances the stability and reliability of the electrical circuit.

[0066] See Figures 1-5 As shown, in the optional embodiment, the battery power distribution unit box further includes a Hall sensor 01, a fuse 02, a Hall busbar 24, a fuse busbar 18, and a first relay busbar 19.

[0067] Hall bus 24 includes corresponding first and second terminals; Hall sensor 01 (e.g. Figure 1 The Hall sensor 01 (as shown) is connected to the Hall bus 24; for example, the Hall bus 24 passes through the magnetic core window or sensing area of ​​the Hall sensor 01 to ensure uniform magnetic field coupling; for example, the Hall sensor 01 is an open-loop current sensor, and the Hall bus 24 passes through the Hall sensor 01 so that the first and second ends of the Hall bus 24 are located on opposite sides of the Hall sensor 01. The first end of the Hall bus 24 is configured to be electrically connected to the overall positive terminal of the battery pack (e.g., ...). Figure 1As shown in the Bat+ diagram, the second end of the Hall bus 24 is electrically connected to the first end of the fuse 02; the second end of the fuse 02 is electrically connected to the fuse bus 18. For example, fuse 02 (as shown in the Bat+ diagram) Figure 1 The Pyro shown includes corresponding first and second terminals. The fuse 02 can be connected to the Hall effect busbar 24 and the fuse busbar 18 via bolts 23.

[0068] The first terminal of the high-voltage control terminal of the first relay 03 and the first detection conductive post 08 (e.g.) Figure 1 The HV2 shown is electrically connected to the fuse busbar 18; that is, one end of the first detection conductive post 08 is electrically connected to the fuse busbar 18, and the first end of the high-voltage control terminal of the first relay 03 is also electrically connected to the fuse busbar 18. The other end of the first detection conductive post 08 is electrically connected to the circuit board 15. Optionally, one end of the first detection conductive post 08 is screwed onto the circuit board 15, and the other end of the first detection conductive post 08 is screwed onto the fuse busbar 18.

[0069] The second end of the high-voltage control terminal of the first relay 03 and the first adhesive conductive post 09 are both electrically connected to the first relay conductive bus 19; that is, one end of the first adhesive conductive post 09 is electrically connected to the first relay conductive bus 19, and the second end of the high-voltage control terminal of the first relay 03 is also electrically connected to the first relay conductive bus 19, while the other end of the first adhesive conductive post 09 is electrically connected to the circuit board 15. Optionally, one end of the first adhesive conductive post 09 is screwed onto the circuit board 15, and the other end of the first adhesive conductive post 09 is screwed onto the first relay conductive bus 19.

[0070] The first relay busbar 19 is configured to be electrically connected to the positive output socket of the battery pack. Through the Hall busbar 24, the fuse busbar 18, and the first relay busbar 19, it can not only conduct electricity but also physically support the connection between the Hall sensor 01, the fuse 02, and the first relay 03.

[0071] Optionally, the Hall busbar 24, the fuse busbar 18, and the first relay busbar 19 are made of copper or other conductive materials.

[0072] In this embodiment, the first end of the Hall bus 24 is electrically connected to the positive terminal (Bat+) of the battery pack, and the Hall sensor 01 (such as...) Figure 1 The Hall effect sensor (as shown) is connected to Hall effect bus 24. The second end of Hall effect bus 24 is electrically connected to the first end of fuse 02. The second end of fuse 02 is electrically connected to fuse bus 18. Fuse bus 18 is electrically connected to the first relay 03 (as shown). Figure 1The first terminal of the high voltage control terminal of the first relay 03 (shown as K1) is electrically connected to the second terminal of the high voltage control terminal of the first relay 03. The first relay conductor 19 is electrically connected to the positive output terminal socket of the battery pack, thereby forming the positive circuit of the battery distribution unit box (BDU).

[0073] See Figures 1-5 As shown, in an optional embodiment, the battery distribution unit box further includes a first temperature sensor 12 for detecting the temperature of fuse 02 (e.g., ...). Figure 1 The NTC1 shown) and the second temperature sensor 13 (as shown) used to detect the temperature of the first relay 03 Figure 1 The NTC2 shown is used to detect the temperature of the fuse 02 via the first temperature sensor 12, which provides data support for the control strategy of the battery distribution unit box. The second temperature sensor 13 is used to detect the temperature of the first relay 03, which also provides data support for the control strategy of the battery distribution unit box.

[0074] Optionally, the first temperature sensor 12 includes a first end and a second end; the first end of the first temperature sensor 12 is electrically connected to the fuse busbar 18, and the second end of the first temperature sensor 12 is electrically connected to the circuit board 15. For example, the first end of the first temperature sensor 12 is mounted on the fuse busbar 18 by bolts 23, and the second end of the first temperature sensor 12 is soldered to the circuit board 15 by a cable stripping and soldering process.

[0075] Optionally, the second temperature sensor 13 includes a first end and a second end; the first end of the second temperature sensor 13 is electrically connected to the first relay busbar 19, and the second end of the second temperature sensor 13 is electrically connected to the circuit board 15. For example, the first end of the second temperature sensor 13 is mounted on the first relay busbar 19 by a bolt 23, and the second end of the second temperature sensor 13 is soldered to the circuit board 15 by a wire stripping and soldering process.

[0076] Optionally, the first temperature sensor 12 and the second temperature sensor 13 are electrically connected to the low-voltage control socket 17 via lines on the circuit board 15. Electrically connecting the first temperature sensor 12, the second temperature sensor 13, and the low-voltage control socket 17 via lines on the circuit board 15 simplifies the structure of the battery power distribution unit box, improves the level of automation in the production of the battery power distribution unit box to a certain extent, reduces reliance on manual production, and also improves the stability and reliability of the electrical circuit to a certain extent.

[0077] The battery power distribution unit box described in this embodiment is equipped with temperature sensors for the fuse 02 and the first relay 03, which have large overcurrent and high temperature rise, so as to detect the temperature of the fuse 02 and the first relay 03 in real time and provide temperature data to the battery management system (BMS) control strategy.

[0078] In this embodiment, both the first temperature sensor 12 and the second temperature sensor 13 are negative temperature coefficient (NTC) thermistors. An NTC thermistor is a semiconductor element whose resistance decreases significantly with increasing temperature, offering advantages such as high sensitivity, wide temperature range, stability, reliability, and low cost. Those skilled in the art can also use other types of temperature sensors as the first temperature sensor 12 and the second temperature sensor 13.

[0079] See Figures 2-5 As shown, in the optional embodiment, the battery power distribution unit box includes intersecting first and second directions; in this embodiment, the first and second directions can be perpendicular or not. Hall sensor 01, fuse 02, pre-charge resistor 04, first relay 03, and second relay 06 are arranged sequentially along the first direction; along the second direction, circuit board 15 is located on one side of the first relay 03, and Hall busbar 24, fuse busbar 18, and first relay busbar 19 are all located on the corresponding opposite side of the first relay 03; that is, Hall busbar 24, fuse busbar 18, and first relay busbar 19 form a busbar structure, and the first relay 03 is located between circuit board 15 and the busbar structure. Using the above design, the structure of the battery power distribution unit box can be made more compact.

[0080] Optionally, the pre-charge resistor 04, the pre-charge relay 05, and the second relay 06 are all located between the circuit board 15 and the busbar structure.

[0081] See Figures 1-5 As shown, in the optional embodiment, the battery power distribution unit box further includes a shunt 07 (e.g., Figure 1 The shown components are: Shunt, second relay busbar 20, shunt busbar 21, and second busbar 22.

[0082] The second conductive bus 22 is configured to be electrically connected to the total negative terminal of the battery pack (e.g., ...). Figure 1 As shown in Bat-), the shunt 07 includes a first end and a second end; the first end of the shunt 07 is electrically connected to the second conductive busbar 22, and the second end of the shunt 07 is electrically connected to the shunt conductive busbar 21; the shunt 07 is connected to the second conductive busbar 22 and the shunt conductive busbar 21 respectively by bolts 23.

[0083] The high-voltage control terminal of the second relay 06 includes a first terminal and a second terminal. The first terminal of the high-voltage control terminal of the second relay 06 is electrically connected to the shunt busbar 21, and the second terminal of the high-voltage control terminal of the second relay 06 is connected to the second adhesive conductive post 10 (e.g., Figure 1HV1 shown is electrically connected to the second relay busbar 20; the second relay busbar 20 is configured to be electrically connected to the negative output socket of the battery pack. The second relay busbar 20, shunt busbar 21, and second busbar 22 provide both electrical conductivity and physical support for the connection between the second relay 06 and the shunt 07. Optionally, one end of the second adhesive conductive post 10 is screwed onto the circuit board 15, and the other end of the second adhesive conductive post 10 is screwed onto the second relay busbar 20.

[0084] Optionally, the second relay busbar 20, the shunt busbar 21, and the second busbar 22 are made of copper or other conductive materials.

[0085] In this embodiment, the battery pack's total negative terminal (e.g., the battery distribution unit box (BDU)) is... Figure 1 The battery pack is connected to the second conductive busbar 22. The first end of the shunt 07 is connected to the second conductive busbar 22. The second end of the shunt 07 is connected to the first end of the high-voltage control terminal of the second relay 06 through the shunt conductive busbar 21. The second end of the high-voltage control terminal of the second relay 06 is connected to the second relay conductive busbar 20. The second relay conductive busbar 20 is connected to the negative output terminal socket of the battery pack, thereby forming the negative circuit of the battery distribution unit box (BDU).

[0086] See Figures 1-5 As shown, in an optional embodiment, the second detection conductor 11 is electrically connected to the second conductive bus 22; for example, the second detection conductor 11 is welded or screwed onto the second conductive bus 22. This allows the first terminal of the high-voltage control terminal of the second relay 06 to be electrically connected to the second detection conductor 11 via the second conductive bus 22.

[0087] See Figures 1-5 As shown, in an optional embodiment, the battery distribution unit box further includes a third temperature sensor 14 for detecting the temperature of the second relay 06 (e.g., ...). Figure 1 (NTC3 shown). The temperature of the second relay 06 is detected by the third temperature sensor 14, which provides data support for the control strategy of the battery power distribution unit box.

[0088] Optionally, the third temperature sensor 14 includes a first end and a second end; the first end of the third temperature sensor 14 is electrically connected to the shunt bus 21, and the second end of the third temperature sensor 14 is electrically connected to the circuit board 15; for example, the first end of the third temperature sensor 14 is mounted on the shunt bus 21 by bolts 23, and the second end of the third temperature sensor 14 is soldered to the circuit board 15 by a cable stripping and soldering process.

[0089] Optionally, the third temperature sensor 14 is electrically connected to the low-voltage control socket 17 via wiring on the circuit board 15. Electrically connecting the third temperature sensor 14 and the low-voltage control socket 17 via wiring on the circuit board 15 simplifies the structure of the battery distribution unit box, improves the level of automation in the production of the battery distribution unit box to a certain extent, reduces reliance on manual production, and also improves the stability and reliability of the electrical circuit to a certain extent.

[0090] The battery power distribution unit box described in this embodiment is equipped with a third temperature sensor 14 for the second relay 06, which has a large overcurrent and high temperature rise, so as to detect the temperature of the second relay 06 in real time and provide temperature data to the battery management system (BMS) control strategy.

[0091] In an optional embodiment, the third temperature sensor 14 may be a negative temperature coefficient thermistor or a temperature sensor of other types.

[0092] This embodiment also provides a battery pack, including the battery power distribution unit box described in any of the above embodiments.

[0093] The battery pack provided in this embodiment includes the battery distribution unit box described above. The technical features of the battery distribution unit box disclosed above are also applicable to this battery pack, and the technical features of the battery distribution unit box already disclosed above will not be described again. The battery pack in this embodiment has the advantages of the battery distribution unit box described above, and the advantages of the battery distribution unit box disclosed above will not be described again here.

[0094] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A battery power distribution unit box, characterized in that, Includes a first relay (03), a pre-charge resistor (04), a pre-charge relay (05), a second relay (06), a high-voltage sampling socket (16), a low-voltage control socket (17), and a circuit board (15). The low-voltage control terminal of the first relay (03), the low-voltage control terminal of the second relay (06), the pre-charge resistor (04), the high-voltage sampling socket (16), and the low-voltage control socket (17) are all connected to the circuit board (15); the low-voltage control terminal and the high-voltage control terminal of the pre-charge relay (05) are both connected to the circuit board (15). The first detection conductive post (08) is supported and connected between the first end of the high voltage control terminal of the first relay (03) and the circuit board (15), and the first adhesive conductive post (09) is supported and connected between the second end of the high voltage control terminal of the first relay (03) and the circuit board (15). The second detection conductor (11) is connected between the first end of the high voltage control terminal of the second relay (06) and the circuit board (15), and the second adhesive conductive post (10) is connected between the second end of the high voltage control terminal of the second relay (06) and the circuit board (15). The first detection conductive post (08), the pre-charge resistor (04), the high-voltage control terminal of the pre-charge relay (05) and the first adhesive conductive post (09) are connected in series using the lines on the circuit board (15). The first detection conductive post (08), the first adhesive conductive post (09), the second adhesive conductive post (10) and the second detection conductive body (11) are respectively electrically connected to the high-voltage sampling socket (16) by the lines on the circuit board (15); The low-voltage control terminal of the first relay (03), the low-voltage control terminal of the second relay (06) and the low-voltage control terminal of the precharge relay (05) are respectively electrically connected to the low-voltage control socket (17) via the lines on the circuit board (15).

2. The battery distribution unit box according to claim 1, characterized in that, The battery power distribution unit box also includes a Hall sensor (01), a fuse (02), a Hall busbar (24), a fuse busbar (18), and a first relay busbar (19). The Hall sensor (01) is connected to the Hall bus (24); the first end of the Hall bus (24) is configured to be electrically connected to the positive terminal of the battery pack, and the second end of the Hall bus (24) is electrically connected to the first end of the fuse (02); the second end of the fuse (02) is electrically connected to the fuse bus (18). The first end of the high voltage control terminal of the first relay (03) and the first detection conductive post (08) are both electrically connected to the fuse busbar (18), and the second end of the high voltage control terminal of the first relay (03) and the first adhesive conductive post (09) are both electrically connected to the first relay busbar (19); the first relay busbar (19) is configured to be electrically connected to the positive output terminal socket of the battery pack.

3. The battery power distribution unit box according to claim 2, characterized in that, The battery power distribution unit box also includes a first temperature sensor (12) for detecting the temperature of the fuse (02) and a second temperature sensor (13) for detecting the temperature of the first relay (03). The first end of the first temperature sensor (12) is electrically connected to the fuse busbar (18), and the second end of the first temperature sensor (12) is electrically connected to the circuit board (15). The first end of the second temperature sensor (13) is electrically connected to the first relay busbar (19), and the second end of the second temperature sensor (13) is electrically connected to the circuit board (15); The first temperature sensor (12) and the second temperature sensor (13) are respectively electrically connected to the low-voltage control socket (17) via the lines on the circuit board (15).

4. The battery distribution unit box according to claim 2, characterized in that, One end of the first detection conductive post (08) is screwed onto the circuit board (15), and the other end is screwed onto the fuse conductor (18); One end of the first adhesive conductive post (09) is screwed onto the circuit board (15), and the other end is screwed onto the first relay conductive bar (19); Both the first detection conductive post (08) and the first adhesion conductive post (09) are made of copper.

5. The battery distribution unit box according to claim 2, characterized in that, The battery power distribution unit box includes intersecting first and second directions; the Hall sensor (01), the fuse (02), the pre-charge resistor (04), the first relay (03), and the second relay (06) are arranged sequentially along the first direction; Along the second direction, the circuit board (15) is located on one side of the first relay (03), and the Hall bus (24), the fuse bus (18) and the first relay bus (19) are all located on the other side of the first relay (03).

6. The battery power distribution unit box according to claim 1, characterized in that, The battery power distribution unit box also includes a shunt (07), a second relay busbar (20), a shunt busbar (21), and a second busbar (22); The second conductive bus (22) is configured to be electrically connected to the negative terminal of the battery pack; the first end of the shunt (07) is electrically connected to the second conductive bus (22), and the second end of the shunt (07) is electrically connected to the shunt conductive bus (21); The first end of the high voltage control terminal of the second relay (06) is electrically connected to the shunt busbar (21), and the second end of the high voltage control terminal of the second relay (06) and the second adhesive conductive post (10) are both electrically connected to the second relay busbar (20); the second relay busbar (20) is configured to be electrically connected to the negative output terminal socket of the battery pack.

7. The battery distribution unit box according to claim 6, characterized in that, The second detection conductor (11) is electrically connected to the second conductive bus (22); The second detection conductor (11) is made of conductive wire.

8. The battery distribution unit box according to claim 6, characterized in that, The battery power distribution unit box also includes a third temperature sensor (14) for detecting the temperature of the second relay (06). The first end of the third temperature sensor (14) is electrically connected to the shunt bus (21), and the second end of the third temperature sensor (14) is electrically connected to the circuit board (15). The third temperature sensor (14) is electrically connected to the low-voltage control socket (17) via the wiring on the circuit board (15).

9. The battery distribution unit box according to claim 6, characterized in that, One end of the second adhesive conductive post (10) is screwed onto the circuit board (15), and the other end is screwed onto the second relay conductive bar (20); The second adhesive conductive post (10) is made of copper.

10. A battery pack, characterized in that, Includes the battery power distribution unit box as described in any one of claims 1-9.

Images