Battery device

Abstract

This invention discloses a battery device, relating to the field of battery technology. By electrically connecting a second plug-in to both the electromagnetic shielding layer and the housing, the electromagnetic shielding layer of the first plug-in and the housing are electrically connected, thereby improving the effectiveness and reliability of the electrical connection.

Description

Technical Field

[0001] This invention relates to the field of battery technology, and more particularly to battery devices. Background Technology

[0002] The battery pack may include: a housing, and a high-voltage plug disposed on the housing. The surface of the high-voltage plug is provided with an electromagnetic shielding layer. When the electromagnetic shielding layer is electrically connected to the housing, the electromagnetic shielding layer can shield the high-voltage plug from electromagnetic interference to other devices.

[0003] Therefore, how to achieve electrical connection between the electromagnetic shielding layer and the shell is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] This invention provides a battery device for achieving electrical connection between the electromagnetic shielding layer and the casing.

[0005] This invention provides a battery device, including: a housing, and a first insert disposed on the housing; the first insert is provided with an electromagnetic shielding layer;

[0006] It also includes: a second plug-in disposed on the housing, wherein the first plug-in and the second plug-in are disposed at intervals;

[0007] The electromagnetic shielding layer is electrically connected to the housing via the second plug-in.

[0008] The technical solution provided by this invention has the following technical advantages:

[0009] The battery device provided in this embodiment of the invention is electrically connected to the electromagnetic shielding layer and the shell through the second plug-in, thereby realizing the electrical connection between the electromagnetic shielding layer and the shell of the first plug-in and improving the effectiveness and reliability of the electrical connection. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of a battery device provided in an embodiment of the present invention;

[0011] Figure 2 For along Figure 1 A cross-sectional view shown along the X1-X2 direction;

[0012] Figure 3 This is a three-dimensional structural diagram of a portion of the second plug-in provided in an embodiment of the present invention;

[0013] Figure 4 This is a three-dimensional structural diagram of another part of the structure of the second plug-in provided in this embodiment of the invention;

[0014] Figure 5This is a schematic diagram of the state when the second plug-in provided in the embodiment of the present invention is not electrically connected to the housing.

[0015] 10-Housing, 20-First insert, 21-Electromagnetic shielding layer, 21a-Spring, 22-Body, 23-Connecting part, 24-Connecting hole, 30-Second insert, 30a-End 1, 31-Conductive terminal, 32-Protective sleeve, 33-Notch, 34-Other terminals, 40-Conductive component, 50-Second wire, 60-Connecting terminal, 61-Screw hole, 70-Battery module, 80-Wrapped wiring harness, 91-Battery management system, 92-Power distribution unit, a-Side, b-Adapter. Detailed Implementation

[0016] The specific embodiments of the battery device provided by the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0017] This invention provides a battery device, such as... Figure 1 As shown, it may include: a housing 10, and a first plug-in 20 disposed on the housing 10; the first plug-in 20 is provided with an electromagnetic shielding layer 21;

[0018] The battery device further includes: a second plug-in 30 disposed on the housing 10, wherein the first plug-in 20 and the second plug-in 30 are disposed at intervals;

[0019] The electromagnetic shielding layer 21 is electrically connected to the housing 10 via the second plug-in 30.

[0020] Thus, by electrically connecting the second plug-in to the electromagnetic shielding layer and the shell respectively, the electromagnetic shielding layer and the shell of the first plug-in are electrically connected, thereby improving the effectiveness and reliability of the electrical connection.

[0021] Furthermore, this design eliminates the need to coat the surface of the casing with an anti-corrosion conductive layer, while still achieving an effective electrical connection between the electromagnetic shielding layer and the casing. It also avoids the adverse effects of corrosion on the electrical connection, thereby simplifying the manufacturing process, reducing manufacturing costs, and improving the safety and reliability of the battery device.

[0022] Optionally, in this embodiment of the invention, the electromagnetic shielding layer 21 may be disposed on the surface of the first plug-in 20, such as... Figure 1 As shown; however, it is not limited to this. As long as the first plug-in is provided with an electromagnetic shielding layer, it falls within the protection scope of the embodiments of the present invention. The specific location of the electromagnetic shielding layer is not limited here.

[0023] Optionally, in this embodiment of the invention, the function of the first plug-in may include: transmitting an electrical signal, wherein the electrical signal may be a voltage signal or a current signal;

[0024] Furthermore, the number of first plugins can be one (not shown), or it can be two (e.g., ...). Figure 1 The number can be set to either three (as shown in the diagram) or other numbers such as three (not shown in the diagram), depending on factors such as the function of the first plugin, and is not limited here.

[0025] Optionally, in this embodiment of the invention, the first plug-in is a high-voltage plug-in, and the second plug-in is a high-voltage interlock plug-in.

[0026] The high-voltage plug-in can be used to transmit high-voltage signals. It can be an input plug-in for transmitting positive and negative signals, and an output plug-in for transmitting positive and negative signals. However, it is not limited to these. By setting an electromagnetic shielding layer, electromagnetic interference caused by the high-voltage plug-in to other components in the battery device can be avoided, thereby improving the reliability and safety of the battery device.

[0027] The function of a high-voltage interlock plug-in can include: detecting whether the male and female terminals in the high-voltage plug-in are effectively connected, thereby disconnecting the high-voltage circuit when they are not effectively connected, preventing abnormalities in the battery device, and improving the safety of the battery device.

[0028] In this way, by using high-voltage interlock plugs to achieve electrical connection between the electromagnetic shielding layer and the shell, no additional structure is needed; only the existing structure can be used, thus preserving the original battery device structure as much as possible. The structure is simple, easy to manufacture, and has a low manufacturing cost.

[0029] Specifically, in this embodiment of the invention, when the first plug-in is a high-voltage plug-in, combined with Figure 4 and Figure 5 As shown, the first plug-in includes: a cylindrical body 22 and a non-cylindrical connecting part 23 connected to the body 22; an electromagnetic shielding layer 21 is provided on the outer surface of the body 22.

[0030] The housing 10 has a through hole, the body 22 can be inserted into the through hole, the spring piece 21a connected to the electromagnetic shielding layer 21 can pass through the through hole, and the spring piece 21a can directly contact the housing 10 in the through hole, thus achieving an interference fit.

[0031] The connecting part 23 is provided with a connecting hole 24, which can be electrically connected to other structures.

[0032] Specifically, the number of shrapnel 21a can be set according to actual needs, and is not limited to... Figure 4 and Figure 5 The representation shown is not limited here.

[0033] It should be noted that, optionally, the structure of the high-voltage plug-in is not limited to... Figure 4 and Figure 5 As shown, other structures that can realize the high-voltage plug-in function can also be used, and are not limited here.

[0034] Of course, optionally, the first plug-in can also be a low-voltage plug-in with an electromagnetic shielding layer, and the second plug-in can be a plug-in other than the high-voltage interlock plug-in. As long as the electromagnetic shielding layer and the shell can be electrically connected through the second plug-in, they are all within the protection scope of the embodiments of the present invention.

[0035] Optionally, in embodiments of the present invention, such as Figure 2 As shown, the second plug-in 30 is provided with conductive terminals (see also...). Figure 3 (The structure represented by 31 in the middle);

[0036] The electromagnetic shielding layer 21 is electrically connected to the conductive terminal 31 via a conductive element 40.

[0037] In this way, the electromagnetic shielding layer and the conductive terminal can be electrically connected through the conductive component, thereby realizing the electrical connection between the electromagnetic shielding layer and the second plug-in, which is beneficial to realizing the electrical connection between the electromagnetic shielding layer and the shell.

[0038] Specifically, the conductive element 40 may be, but is not limited to, a first wire and / or a metal sheet.

[0039] Of course, in addition to wires and metal sheets, other methods can be used to implement the conductive component. As long as the conductive component can realize the electrical connection between the electromagnetic shielding layer and the conductive terminal, it falls within the protection scope of the embodiments of this invention.

[0040] Specifically, in this embodiment of the invention, when the conductive element is electrically connected to the conductive terminal, the following method can be used:

[0041] The conductive component is soldered to the conductive terminal by means of welding (the welding position can be as follows). Figure 2 (within the area shown in the dashed box 2);

[0042] Alternatively, the ends of the conductive terminals and conductive components can be specially designed, allowing the conductive components to be plugged into the conductive terminals via a connection method (the plugging position can also be as follows). Figure 2 (within the area shown in the dashed box 2);

[0043] Alternatively, a lead can be provided on the conductive terminal. This lead can be, but is not limited to, a lead wire, and then the lead wire can be connected to the conductive component by means of soldering, crimping, or plugging (in this case, the position of soldering, crimping, or plugging can be as follows). Figure 2 Within the area shown in the dashed box 1, at this time Figure 2 The dashed box 40 can represent the combination of a conductive element and a lead-out terminal to achieve an electrical connection between the lead-out wire and the conductive element.

[0044] Of course, in practice, in order to achieve electrical connection between conductive components and conductive terminals, a specific electrical connection method can be selected according to actual needs, and there is no limitation here.

[0045] Optionally, in this embodiment of the invention, the electromagnetic shielding layer and the conductive element are integrally formed.

[0046] In other words, conductive components are manufactured at the same time as the electromagnetic shielding layer.

[0047] This ensures a good electrical connection between the conductive components and the electromagnetic shielding layer, reducing the need for subsequent connection processes due to the non-integrated structure of the conductive components and the electromagnetic shielding layer. This improves the manufacturing efficiency of the battery device and also enhances its reliability.

[0048] It should be noted that during the use of the battery device, in order to achieve the electromagnetic shielding effect, the material used to make the electromagnetic shielding layer is usually metal, such as, but not limited to, copper and other metals. As the battery device is used for a longer period of time, the metal may oxidize, which will cause a certain degree of oxidation corrosion on the surface of the electromagnetic shielding layer; it should be noted that this oxidation corrosion is relatively slow.

[0049] When the electromagnetic shielding layer and the conductive component are integrally formed, even if the surface of the electromagnetic shielding layer undergoes oxidation and corrosion, the effective electrical connection between the electromagnetic shielding layer and the conductive component can still be guaranteed. Oxidation and corrosion will not have a significant adverse effect on the electrical connection effect. Therefore, the effective electrical connection between the electromagnetic shielding layer and the shell can still be guaranteed, realizing the function of the electromagnetic shielding layer and improving the safety and reliability of the battery device.

[0050] Of course, the electromagnetic shielding layer and the conductive component can also be non-integrated structures, that is, they are manufactured separately and then assembled to achieve electrical connection between the electromagnetic shielding layer and the conductive component.

[0051] This design increases design flexibility, allowing for flexible fabrication based on the internal structure and remaining space of the battery device. It avoids increasing manufacturing difficulty due to the special shape of the electromagnetic shielding layer, thus meeting the needs of different application scenarios.

[0052] Optionally, in embodiments of the present invention, such as Figure 3 As shown, the second plug-in 30 includes: a protective sleeve 32, the conductive terminal 31 is located inside the protective sleeve 32, and the protective sleeve 32 has a notch 33;

[0053] The conductive element 40 ( Figure 3 (Only a portion of the structure of the conductive element 40 is shown in the diagram) It is electrically connected to the conductive terminal 31 through the notch 33.

[0054] Specifically, the protective cover can be a cavity with an opening, the bottom of the protective cover can be fixed to the shell, and the bottom surface of the protective cover can be parallel to the surface of the shell.

[0055] Alternatively, the protective cover can be a frame fixed to the housing, with the sides of the frame perpendicular to the surface of the housing, such as... Figure 1 As shown, Figure 1 A square filled with sparse black dots within a dashed box of size 30 can represent a frame.

[0056] Furthermore, the protective sleeve has a side perpendicular to the surface of the housing, in which case the notch can be set on the side (e.g., Figure 3 On the side (represented by 'a' in the text), so that the conductive component can pass through the notch into the protective sleeve, preventing the conductive component from entering the protective sleeve in a direction perpendicular to the surface of the housing, thereby preventing the conductive component from bending when electrically connecting with the conductive terminal and affecting the electrical connection effect. At the same time, it can also reduce the difficulty of operation during electrical connection and prevent the conductive component from detaching from the conductive terminal after the battery device has been used for a long time.

[0057] At the same time, this arrangement can also make reasonable use of space and avoid affecting the arrangement of other surrounding structures.

[0058] Specifically, in the embodiments of the present invention, the specific implementation of the notch is not limited to... Figure 3 As shown, it can also be in other forms, such as, but not limited to, on the side of the protective cover (e.g. Figure 3 A through hole (not shown) is provided on the protective sleeve (as shown in Figure a), through which the conductive component can pass into the interior of the protective sleeve; the form of the notch can be set according to actual needs and is not limited here.

[0059] Optionally, in embodiments of the present invention, such as Figure 1 As shown, the second plug-in 30 is electrically connected to the housing 10 via the second wire 50.

[0060] It should be noted that the second wire 50 can be located inside the housing 10, such as... Figure 1 As shown, that is, the second plug-in 30 can have two ends, one end (such as...) Figure 1 The white-filled square within the dashed frame 30 is designated as end 1, and... Figure 3 The second plug-in 30 shown can be understood as end 1) which can be located inside the housing 10, and the other end (such as Figure 1 The sparsely dotted black-filled square within the dashed frame 30, denoted as end 2, can be located outside the housing 10. The conductive terminal ( Figure 1 (not shown in the image) can be located at end 2 and disposed outside the housing 10;

[0061] Alternatively, the second wire can be located outside the housing, which is not shown in the figure. That is, when the conductive terminal is also located outside the housing, the second wire and the conductive terminal are both located on the same side surface of the housing.

[0062] In practice, the position of the second wire can be set according to actual needs, as long as the second wire can achieve electrical connection between the second plug-in and the housing. There are no restrictions on this.

[0063] Optionally, in an embodiment of the invention, the second wire is snapped or screwed into the housing.

[0064] Combination Figure 4 As shown in the figure, the second plug-in is located inside the housing (i.e., end 1 mentioned above). Figure 4 (represented by 30a in the figure), where three ports are shown (as indicated by the dashed circle 3). The middle port is the opposite port of the conductive terminal that is electrically connected to the electromagnetic shielding layer, and the other two ports are for electrical connection to the battery management system. In this case:

[0065] One end of the second conductor 50 can be electrically connected to the middle port, and the other end can be equipped with a connection terminal 60. The effect after connection is as follows: Figure 5 As shown, the connecting terminal 60 can be snapped into the housing 10 or screwed into the housing 10;

[0066] When the connecting terminal 60 is engaged with the housing 10, a latch may be provided on the housing 10. Figure 5 (not shown in the image) to facilitate connection and fixation with the connecting terminal 60; or, a groove is provided on the housing 10 ( Figure 5 (not shown in the image) so that the connecting terminal 60 can be inserted into the groove to achieve the connection and fixation between the housing 10 and the connecting terminal 60;

[0067] When the connecting terminal 60 is screwed to the housing 10, a screw hole can be provided on the housing 10. Figure 5 (Not shown in the image), the connecting terminal 60 may also have a screw hole (e.g., ...). Figure 5 As shown in 61), align the two screw holes and then connect and fix them with bolts or screws.

[0068] Of course, the electrical connection between the second conductor and the housing is not limited to snap-fit ​​and screw-fit. Other connection methods can also be used, such as, but not limited to, soldering the connection terminal to the housing. As long as the second conductor can be electrically connected to the housing, it is not limited here.

[0069] To clarify, Figure 4 End 1 shown has three ports, which are related to Figure 3 The second plugin shown (where, Figure 3 The structure shown can also be understood as the conductive terminal 31 and the two other terminals 34 in end 2) mentioned above being in one-to-one correspondence, so as to facilitate effective signal transmission and avoid signal transmission errors.

[0070] Of course, the number of ports in end 1 and terminals in end 2 is not limited to three. It can also be set to four (not shown), five (not shown), or six (not shown), etc., depending on actual needs. There is no limitation here.

[0071] Optionally, in an embodiment of the present invention, an anti-corrosion layer is provided at the connection between the second wire and the housing.

[0072] For example, such as Figure 5 As shown, when the connecting terminal 60 is electrically connected to the housing 10, an anti-corrosion layer can be provided at the electrical connection between the connecting terminal 60 and the housing 10.

[0073] In other words, an anti-corrosion layer is installed at the connection point between the second conductor and the casing. This can prevent corrosion at the connection point, improve the effectiveness of the electrical connection between the second conductor and the casing, and thus improve the safety and reliability of the battery device.

[0074] Optionally, in an embodiment of the invention, the housing is made of a metal material.

[0075] The metallic material may include iron.

[0076] Of course, the material for making the shell is not limited to iron; other metals can also be used, such as, but not limited to, aluminum and other metals. This is not a limitation.

[0077] Thus, when the housing is made of metal, an electrical connection between the second plug-in and the housing can be achieved when the second plug-in (such as, but not limited to, the second wire mentioned above) comes into contact with the housing.

[0078] It is important to emphasize that when the casing is made of iron and an anti-corrosion layer is installed at the connection between the casing and the second conductor, even if the iron oxidizes and corrodes, the presence of the anti-corrosion layer can prevent corrosion at the connection between the second conductor and the casing, thus achieving an effective electrical connection. In addition, the electromagnetic shielding layer is electrically connected to the casing through the second plug-in, which also enables an effective electrical connection between the electromagnetic shielding layer and the casing. Therefore, an effective electrical connection between the electromagnetic shielding layer and the casing can still be achieved. This improves the safety and reliability of the battery device, simplifies the manufacturing process, and reduces manufacturing costs.

[0079] Optionally, in an embodiment of the present invention, the housing is grounded.

[0080] For example, when the battery device is equipped with a grounding terminal, the casing can be electrically connected to the grounding terminal.

[0081] Of course, the grounding method is not limited to the examples above. Any grounding method that can achieve grounding falls within the protection scope of the embodiments of this invention.

[0082] In this way, the electromagnetic shielding layer can be grounded, thereby realizing the function of the electromagnetic shielding layer and improving the safety and reliability of the battery device.

[0083] It should be noted that, in Figures 2 to 5 The example shown uses a high-voltage plug-in as the first component. In practice, the specific structure of the first plug-in is not limited to this. Figures 2 to 5 As shown, any specific structure of the first plug-in with an electromagnetic shielding layer on its surface falls within the protection scope of this invention.

[0084] Optionally, in embodiments of the present invention, when the battery device is a battery pack, such as Figure 1 As shown, the battery device may further include: multiple battery modules 70, a battery management system 91, and a power distribution unit 92. Each battery module 70 is electrically connected to the battery management system 91 and the power distribution unit 92 respectively via a bundled wiring harness 80. The second plug-in 30 can also be electrically connected to the battery management system 91 and the power distribution unit 92 respectively via a wiring harness (wherein, those electrically connected to the battery management system 91 and the power distribution unit 92 respectively via wiring harnesses are...). Figure 3 The two other terminals 34 shown in the figure are used to enable the battery module 70 and the second plug-in 30 to be managed by the power distribution unit 92 and the battery management system 91, including functions such as charging and discharging, thermal runaway, voltage, current and state of charge.

[0085] Of course, in practice, the number of battery management systems is not limited to... Figure 1The number shown as one can also be set to two or other quantities, which can be set according to actual needs and is not limited here.

[0086] Alternatively, the battery management system can be integrated with the power distribution unit to reduce space occupation and optimize the internal structural space of the battery device. The specific configuration can be made according to actual needs and is not limited here.

[0087] Specifically, when the second plug-in 30 is connected to the battery management system 90 via a wiring harness, such as Figure 5 As shown, an adapter b can be provided in the wire harness, through which the second plug-in 30 can be electrically connected to the whole wire harness 80.

[0088] The specific implementation of adapter b can be set according to actual needs, such as, but not limited to, plug-in or snap-in methods, and is not limited here.

[0089] Specifically, the number of battery modules included in the battery device is not limited to 6 (e.g., ...). Figure 1 As shown in the image, this is just an example with 6 modules. In practice, the number of battery modules can be set according to actual needs and is not limited here.

[0090] Specifically, in addition to the structures described above, the battery device may also include other structures for realizing the functions of the battery device, which are not limited here.

[0091] Of course, alternatively, the battery device is not limited to a battery pack, but can also be other structures including a first insert, a second insert, and a housing, which are not limited here.

[0092] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A battery device, characterized in that, include: The housing, and the first insert disposed on the housing; The first plug-in is equipped with an electromagnetic shielding layer; It also includes: a second plug-in disposed on the housing, wherein the first plug-in and the second plug-in are disposed at intervals; The electromagnetic shielding layer is electrically connected to the housing via the second plug-in; The first plug-in is a high-voltage plug-in, and the second plug-in is a high-voltage interlock plug-in; The second plug-in is provided with conductive terminals; the electromagnetic shielding layer is electrically connected to the conductive terminals through conductive components, and the electromagnetic shielding layer and the conductive components are integrally formed. The second plug-in includes: a protective sleeve, the conductive terminal being located inside the protective sleeve, the protective sleeve having a notch; the protective sleeve having a side perpendicular to the surface of the housing, the notch being disposed on the side, the conductive element passing through the notch into the protective sleeve; the conductive element being electrically connected to the conductive terminal through the notch.

2. The battery device as claimed in claim 1, characterized in that, The second plug-in is electrically connected to the housing via a second wire.

3. The battery device as claimed in claim 2, characterized in that, The second wire is snapped or screwed into the housing.

4. The battery device as claimed in claim 2, characterized in that, An anti-corrosion layer is provided at the connection between the second conductor and the housing.

5. The battery device as claimed in claim 1, characterized in that, The shell is made of metal.

6. The battery device according to any one of claims 1-5, characterized in that, The housing is grounded.

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