New energy vehicle battery detection circuit with multi-bending lead

Abstract

The utility model relates to the field of circuit manufacturing, in particular to a new energy vehicle battery detection circuit with a multi-bend wire, which comprises a temperature sensor and the multi-bend wire. The temperature sensor is arranged on a monitored battery and is electrically connected with the signal transmission bus through the multi-bend folding wire; the multi-bend folding wire comprises a plurality of bent circuitous sections and linear sections; the bent circuitous sections and the linear sections are alternately arranged on the multi-bend folding lead; the plurality of straight line segments are parallel to each other, and the insulating outer cladding layers of the adjacent straight line segments are bonded with each other; the bonding force between the adjacent straight line segments is in direct proportion to the distance between the corresponding bonding position and the temperature sensor, and the bonding force is smaller than a preset structural force bearing threshold value; and the plurality of bent circuitous sections are not overlapped in the arrangement direction of the plurality of straight line sections. According to the utility model, the working stability of the circuit is improved, the safety of a signal transmission bus is guaranteed, and the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of circuit manufacturing, in particular to a new energy vehicle battery detection circuit with multiple bending wires. Background Art

[0002] With the development and application of new energy technologies, more and more devices use power battery packs as core energy components to provide power for the entire device, and its safety has always been a focus of attention in the industry. In order to ensure the safe operation of the batteries in the power battery pack, it is necessary to monitor and record the battery status (such as temperature status, etc.) in real time. In related technologies, the signal transmission bus is usually installed on the surface of the battery, and status detection elements are set on both sides of the signal transmission bus. These status detection elements and the signal transmission bus transmit signals through electrical connection structures, and the above-mentioned status detection elements and electrical connection structures constitute the battery status detection circuit.

[0003] However, when the battery is quickly charged, high-power charging will cause a strong heating effect, the overall temperature will rise, and the battery will also expand and contract significantly, causing the distance between the signal transmission bus fixed on the surface of the battery and the status detection element to change significantly. In the related art, the electrical connection structure connecting the status detection element and the signal transmission bus is usually a straight wire or an S-shaped copper sheet, which has strong rigidity and poor elasticity. After experiencing multiple thermal expansions and contractions, it is easy to break or disconnect, and may even pull and damage the signal transmission bus.

[0004] Therefore, how to provide an electrical connection structure with excellent telescopic performance to improve the working stability and service life of a new energy vehicle battery detection circuit with multiple bend wires is an urgent problem to be solved by technical personnel in this field. Utility Model Content

[0005] The purpose of the utility model is to provide a new energy vehicle battery detection circuit with multiple bending wires to solve the problem that the electrical connection structure of the new energy vehicle battery detection circuit with multiple bending wires in the prior art has poor elasticity, resulting in poor working stability and short service life of the new energy vehicle battery detection circuit with multiple bending wires.

[0006] In order to solve the above technical problems, the utility model provides a new energy vehicle battery detection circuit with a multi-bend wire, including a temperature sensor and a multi-bend folded wire;

[0007] The temperature sensor is arranged on the monitored battery and is electrically connected to the signal transmission bus through the multi-bend folded wire;

[0008] The multi-bend folded conductor includes a plurality of bending and circuitous segments and straight segments;

[0009] The bending and circuitous segments and the straight segments are alternately arranged on the multi-bend folded conductor;

[0010] The plurality of straight line segments are parallel to each other, and the insulating outer covering layers of adjacent straight line segments are bonded to each other;

[0011] The bonding force between adjacent straight line segments is proportional to the distance between the corresponding bonding point and the temperature sensor, and the bonding force is less than a preset structural bearing threshold;

[0012] The plurality of bending segments do not overlap in the arrangement direction of the plurality of straight segments.

[0013] Optionally, in the new energy vehicle battery detection circuit with multiple meandering wires, the meandering and circuitous segments are circular arc segments;

[0014] The ratio of the arc radius of the circular arc segment to the outer diameter of the multi-bend folded conductor is not less than a preset arc stability threshold.

[0015] Optionally, in the new energy vehicle battery detection circuit with multi-bend conductors, the adhesion force ranges from 5N to 25N, including endpoint values.

[0016] Optionally, in the new energy vehicle battery detection circuit with a multi-bend folded wire, the insulating outer sheath of the multi-bend folded wire includes at least one of a cross-linked polyethylene layer, a polypropylene layer and a polyvinyl chloride layer;

[0017] and / or

[0018] The conductive core of the multi-bend folded conductor includes at least one of a bare copper stranded conductor core, a tinned copper stranded conductor core, a bare copper single conductor core and a tinned copper single conductor core.

[0019] Optionally, in the new energy vehicle battery detection circuit with multiple bending conductors, the insulating outer layers of adjacent straight line segments are heat-treated and partially melted and bonded to each other.

[0020] Optionally, in the new energy vehicle battery detection circuit with multiple meandering wires, an adhesive layer is also included;

[0021] Adjacent straight line segments are bonded to each other via the adhesive layer.

[0022] Optionally, in the new energy vehicle battery detection circuit with multiple meandering conductors, all the meandering segments have no overlap in the arrangement direction of the plurality of straight line segments.

[0023] Optionally, in the new energy vehicle battery detection circuit with multi-bend wires, the temperature sensor is an NTC thermistor.

[0024] Optionally, in the new energy vehicle battery detection circuit with multi-bend conductive wires, all straight segments and all bent and circuitous segments of the multi-bend conductive wires are located in the same plane.

[0025] Optionally, in the new energy vehicle battery detection circuit with multi-bend conductive wires, the corresponding plane thickness of all straight segments and all bent and circuitous segments of the multi-bend conductive wires is less than 1.2 mm.

[0026] The utility model provides a new energy vehicle battery detection circuit with a multi-bend conductor, comprising a temperature sensor and a multi-bend folded conductor; the temperature sensor is arranged on the monitored battery and is electrically connected to a signal transmission bus through the multi-bend folded conductor; the multi-bend folded conductor comprises a plurality of bend and circuitous segments and straight segments; the bend and circuitous segments and the straight segments are alternately arranged on the multi-bend folded conductor; the plurality of straight segments are parallel to each other, and the insulating outer sheaths of adjacent straight segments are bonded to each other; the bonding force between adjacent straight segments is proportional to the distance between the corresponding bonding point and the temperature sensor, and the bonding force is less than a preset structural bearing threshold; the plurality of bend and circuitous segments have no overlap in the arrangement direction of the plurality of straight segments.

[0027] The utility model provides a wire with multiple bends and folds. When the monitored battery expands due to heat, the adjacent straight segments in the multi-bend folded wire will be disconnected due to the excessive force, which is equivalent to releasing additional wire length, avoiding the situation that the wire length is insufficient and the wire is broken or disconnected due to excessive force, thereby improving the working stability and service life of the new energy vehicle battery detection circuit with multiple bends. At the same time, the farther the bonding point of the adjacent straight segments is from the signal transmission bus, the smaller the corresponding bonding force is, which ensures that the bonding between the straight segments close to the temperature sensor side is disconnected first, so that the excessive pulling force is removed by the wire segment close to the temperature sensor before being transmitted to the signal transmission bus, further ensuring the safety of the signal transmission bus and greatly reducing the subsequent maintenance and repair costs. In addition, the utility model further staggers different bend and detour segments in a direction perpendicular to the straight segment, avoiding the bend and detour segments that occupy a larger area from overlapping and squeezing each other in the arrangement direction of the straight segment, resulting in loose bonding of adjacent straight segments, thereby further improving the working stability of the new energy vehicle battery detection circuit with multiple bends. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 A partial structural schematic diagram of a specific implementation of a new energy vehicle battery detection circuit with multiple bent wires provided by the utility model;

[0030] Figure 2 A partial structural schematic diagram of a specific implementation of a new energy vehicle battery detection circuit with multiple bent wires provided by the utility model;

[0031] Figure 3 A partial structural schematic diagram of a specific implementation of a new energy vehicle battery detection circuit with multiple bent wires provided by the utility model.

[0032] In the figure, it includes 10-multi-bend folded wire, 20-temperature sensor, 30-signal transmission bus, 40-monitored battery, 11-contact connection, 01-first straight portion, 02-second straight portion, 03-third straight portion, 04-fourth straight portion, 01'-first bending portion, 02'-second bending portion, 03'-third bending portion, 04'-fourth bending portion, 05'-fifth bending portion. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0034] The core of the utility model is to provide a new energy vehicle battery detection circuit with multiple bending wires, and a structural schematic diagram of a specific implementation method thereof is shown as follows: Figure 1 and Figure 2 As shown, it is called the specific implementation mode 1, including a temperature sensor 20 and a multi-bend folded wire 10;

[0035] The temperature sensor 20 is disposed on the monitored battery 40 and is electrically connected to the signal transmission bus 30 through the multi-bend folded wire 10;

[0036] The multi-bend folded conductor 10 includes a plurality of bending segments and straight segments;

[0037] The bending and circuitous segments and the straight segments are alternately arranged on the multi-bend folded conductor 10;

[0038] The plurality of straight line segments are parallel to each other, and the insulating outer covering layers of adjacent straight line segments are bonded to each other;

[0039] The bonding force between adjacent straight line segments is proportional to the distance between the corresponding bonding point and the temperature sensor 20, and the bonding force is less than a preset structural bearing threshold;

[0040] The plurality of bending segments do not overlap in the arrangement direction of the plurality of straight segments.

[0041] Figure 1 and Figure 2 They are schematic diagrams of the multi-bend folded wire 10 being bonded to each other before being pulled apart by external force and schematic diagrams of the multi-bend folded wire 10 being no longer bonded to each other after being pulled apart. The multi-bend folded wire 10 can be regarded as a wire obtained by repeatedly folding and bonding the base wire 300. The multi-bend folded wire 10 itself is composed of a conductive core and an insulating outer layer wrapped around the outside of the conductive core. For details, please refer to Figure 1 and Figure 2 In the figure, the contact connection between the conductive core of the multi-bend folded wire 10 and the signal transmission bus 30 is marked and indicated by 11. Preferably, the outer surface of the multi-bend folded wire 10 also includes an electrical insulation coating to further improve the electrical performance of the multi-bend folded wire 10.

[0042] For reference Figure 1 , Figure 1 The three bending and detour segments are staggered in the arrangement direction of the plurality of straight segments and do not overlap. The arrangement direction of the straight segments refers to the direction perpendicular to the extension direction of the straight segments before the bonding is disconnected. Furthermore, all the bending and detour segments do not overlap in the arrangement direction of the plurality of straight segments. This allows a larger area of ​​straight segments to overlap and fit closely, improves the bonding effect between adjacent straight segments, and avoids the situation where the bonding between adjacent straight segments is not strong and the bonding force is less than expected.

[0043] Of course, the temperature sensor 20 needs to be connected to the positive and negative electrodes respectively, so the multi-bend folded wire 10 includes a positive signal line and a negative signal line. Figure 1 and Figure 2 The temperature sensor 20 can be replaced by at least one of a light sensor, a current sensor, a humidity sensor and an air sensor. Of course, other types of sensors can also be selected according to actual conditions, and the utility model is not limited here. The above sensors can comprehensively judge the condition of the monitored battery 40 to avoid accidents.

[0044] Preferably, the temperature sensor 20 is an NTC thermistor (Negative Temperature Coefficient thermistor). The NTC thermistor is small in size and suitable for being inserted into the gap of the monitored battery 40 for temperature monitoring.

[0045] Furthermore, all the straight segments and all the bending and circuitous segments of the multi-bend folded wire 10 are located in the same plane. All the straight segments and all the bending and circuitous segments of the multi-bend folded wire 10 are pressed in the same plane, so that the new energy vehicle battery detection circuit with multi-bend wires is in a sheet shape as a whole, which is easier to transport and also easier to install into the gap of the monitored battery 40, thereby improving installation efficiency.

[0046] The multi-bend folded conductor 10 has a stable structure and is not easily deformed. It will debond and stretch when subjected to a certain pulling force. The bent and circuitous section has a certain rebound function after being stretched, thereby avoiding conductor breakage and poor contact caused by thermal expansion and contraction of the battery.

[0047] Among them, the structural bearing threshold is a preset tensile threshold. If the structural bearing threshold is exceeded, the structure in the circuit may be damaged due to excessive tensile force. It should be noted that the above-mentioned potentially damaged structure includes not only the temperature sensor 20 and the multi-bend folded wire 10, but also the signal transmission bus 30. The new energy vehicle battery detection circuit with multi-bend wires provided by the utility model is a whole when leaving the factory. The multi-bend folded wire 10 is rigid and regular in shape when not subjected to external force, which greatly facilitates the transportation and installation of the new energy vehicle battery detection circuit with multi-bend wires. For example, the size of the entire new energy vehicle battery detection circuit with multi-bend wires is less than the space occupied by width 16mm*length 36mm*thickness 1mm.

[0048] Preferably, the range of the adhesive force is 5N to 25N, including endpoint values, such as any one of 5.0N, 13.1N or 25.0N. The above range is the optimal range after a large number of theoretical calculations and actual tests. In the above range, the multi-bend folded wire 10 will not be spread out during transportation due to the adhesive force being too small, making it difficult to install, and the multi-bend folded wire 10 will not be unable to spread out in time when the monitored battery 40 expands due to the adhesive force being too large. Of course, other values ​​of adhesive force can also be selected according to actual conditions, and the utility model is not limited here.

[0049] The utility model adopts the method that the closer the bonding force is to the temperature sensor 20, the smaller it is, so as to form a layer-by-layer force unloading effect, thereby ensuring to the greatest extent that the signal transmission bus 30 which is difficult to repair and expensive is not damaged.

[0050] Preferably, the insulating outer sheath of the multi-bend folded conductor 10 includes at least one of a cross-linked polyethylene layer, a polypropylene layer and a polyvinyl chloride layer;

[0051] and / or

[0052] The conductive core of the multi-bend folded conductor 10 includes at least one of a bare copper stranded conductor core, a tinned copper stranded conductor core, a bare copper single conductor core, and a tinned copper single conductor core.

[0053] Since the multi-bend folded conductor 10 needs to be repeatedly bent and squeezed during the manufacturing process, it is preferred to use the above-mentioned soft, highly elastic, and bend-resistant metal material as the conductive core, thereby improving the bending performance and resilience of the conductor and ensuring that no breakage or damage occurs during the manufacturing process; similarly, the surface of the conductive core is coated with the above-mentioned insulating material that is soft, highly elastic, and bend-resistant and suitable for use in an environment of 105 degrees Celsius to 125 degrees Celsius, thereby ensuring the electrical performance and safety of the conductor.

[0054] As a preferred implementation, the bending and circuitous section is a circular arc section;

[0055] The ratio of the arc radius of the circular arc segment to the outer diameter of the multi-bend folded conductor 10 is not less than a preset arc stability threshold.

[0056] In this preferred embodiment, the bending and detour section is an arc section, that is, the multi-bend folded wire 10 is bent into an arc shape in the bending and detour section, and the ratio of the arc radius of the arc section to the outer diameter of the multi-bend folded wire 10 is specified. The preset arc stability threshold can be 2, and of course it can be adjusted accordingly according to actual conditions. The above means improve the bending performance and resilience of the wire, and at the same time improve the ability of the wire to resist external forces, greatly reduce the possibility of the multi-bend folded wire 10 being broken in the bending and detour section, improve the working stability of the multi-bend folded wire 10, and reduce the collision loss during transportation.

[0057] The temperature sensor 20 may be an NTC thermistor, which is popular due to its high precision. The temperature of the monitored battery 40 can be measured in real time using the thermistor.

[0058] The signal transmission bus 30 may be a FPC (flexible printed circuit) or a HFC (new flexible wiring harness), which is not limited in the present invention.

[0059] The utility model provides a new energy vehicle battery detection circuit with a multi-bend conductor, comprising a temperature sensor 20 and a multi-bend folded conductor 10; the temperature sensor 20 is arranged on a monitored battery 40, and is electrically connected to a signal transmission bus 30 through the multi-bend folded conductor 10; the multi-bend folded conductor 10 comprises a plurality of bend and circuitous segments and straight segments; the bend and circuitous segments and the straight segments are alternately arranged on the multi-bend folded conductor 10; the plurality of straight segments are parallel to each other, and the insulating outer sheaths of adjacent straight segments are bonded to each other; the bonding force between adjacent straight segments is proportional to the distance between the corresponding bonding point and the temperature sensor 20, and the bonding force is less than a preset structural bearing threshold; the plurality of bend and circuitous segments have no overlap in the arrangement direction of the plurality of straight segments. The utility model provides a multi-bend and folded wire. When the monitored battery 40 expands due to heat, the adjacent straight segments in the multi-bend folded wire 10 will be disconnected due to the excessive force, which is equivalent to releasing the extra wire length, avoiding the situation where the wire is broken or disconnected due to excessive force due to insufficient length, thereby improving the working stability and service life of the battery detection circuit of the new energy vehicle with multi-bend wires. At the same time, the farther the bonding point of the adjacent straight segments is from the signal transmission bus 30, the smaller the corresponding bonding force is, thereby ensuring that the bonding between the straight segments close to the temperature sensor 20 is first Disconnection allows the excessive pulling force to be removed by the wire segment close to the temperature sensor 20 before it is transmitted to the signal transmission bus 30, further ensuring the safety of the signal transmission bus 30 and greatly reducing the subsequent maintenance and repair costs; in addition, the utility model further staggers the different bending and circuitous segments in a direction perpendicular to the straight line segment, avoiding the bending and circuitous segments that occupy a larger area from overlapping and squeezing each other in the arrangement direction of the straight line segments, resulting in loose bonding between adjacent straight line segments, thereby further improving the working stability of the new energy vehicle battery detection circuit with multiple bending wires.

[0060] On the basis of the first embodiment, the bonding method of the straight line segment is further limited to obtain the second embodiment, and the corresponding structural schematic diagram is the same as the above embodiment, including a temperature sensor 20 and a multi-bend folded wire 10;

[0061] The temperature sensor 20 is disposed on the monitored battery 40 and is electrically connected to the signal transmission bus 30 through the multi-bend folded wire 10;

[0062] The multi-bend folded conductor 10 includes a plurality of bending segments and straight segments;

[0063] The bending and circuitous segments and the straight segments are alternately arranged on the multi-bend folded conductor 10;

[0064] The plurality of straight line segments are parallel to each other, and the insulating outer covering layers of adjacent straight line segments are bonded to each other;

[0065] The bonding force between adjacent straight line segments is proportional to the distance between the corresponding bonding point and the temperature sensor 20, and the bonding force is less than a preset structural bearing threshold;

[0066] The insulating outer coverings of adjacent straight sections are heat treated to partially melt and bond to each other.

[0067] The difference between this specific implementation and the above specific implementation is that this specific implementation further stipulates the bonding method of adjacent straight line segments, and the remaining structures are the same as those in the above specific implementation, which will not be elaborated here.

[0068] In this specific embodiment, the bonding between adjacent straight segments is formed by melting the insulating outer sheath after heat treatment, and no additional adhesive is required, which simplifies the structure and process, reduces production costs and improves production efficiency. At the same time, the heat treatment can have a better shaping effect on the multi-bend folded conductor 10, so that the conductor shape remains preset, which is convenient for process standardization in subsequent mass production.

[0069] Of course, as another specific embodiment, it also includes an adhesive layer;

[0070] Adjacent straight line segments are bonded to each other via the adhesive layer.

[0071] In other words, in this specific embodiment, the bonding between adjacent straight line segments is achieved by dispensing the adhesive layer, which is more versatile and more suitable for large-scale production. Of course, it can also be adjusted according to actual conditions, and the utility model is not limited here.

[0072] The following is a specific embodiment of a new energy vehicle battery detection circuit with multiple bending wires provided by the utility model, which is applied to a new energy vehicle, that is, a new energy vehicle temperature detection device and its wires. For details, please see Figure 3 , including an NTC thermistor, and two mutually adhered positive and negative signal lines are connected in the middle position of one side of the NTC thermistor. Of course, the positive and negative signal lines together constitute the multi-bend folded wire 10, and the multi-bend folded wire 10 includes a signal line and a signal line B. Both the signal line a and the signal line b are composed of an internal conductor and an external insulating material. The cross-sectional area of ​​the internal conductor is circular, and it is twisted by multiple tinned soft copper strands. The single wire diameter is 0.07mm, and the cross-sectional area of ​​the twisted wire is 0.152mm2, the minimum value is 0.152mm, the maximum value is 0.156mm, the average value is 0.154mm, the twist pitch is 8-10mm, and it is twisted to the left.

[0073] External insulation material wrapping, material is PVC, outer diameter 0.95±0.05mm, cross-sectional area 0.2-0.25mm 2, concentricity>45%, preferably PVC material that meets the T3 standard in ISO 19642, suitable for use at temperatures of 105-125 degrees.

[0074] One end of the wire is welded to the middle of one side of the NTC thermistor, and the other end of the wire is welded to the HFC data line cable (i.e., the signal transmission bus 30) of the new energy vehicle. The diameter of the wire is 1mm. Because the installation space is limited, the thickness or total height of the data line must be less than 1.2mm, so the wires cannot be staggered and overlapped with each other, otherwise they will exceed this height. The A signal line and the B signal line are arranged in multiple S shapes and distributed in a space with a length and width of 36mm*16mm and a height of 1mm.

[0075] The conductor includes a first bending portion 01', a second bending portion 02', a third bending portion 03', a fourth bending portion 04', and a fifth bending portion 05', wherein the bending angle of the first bending portion 01' is 90 degrees, the bending angle of the second bending portion 02' is 180 degrees, the bending angle of the third bending portion 03' is 180 degrees, the bending angle of the fourth bending portion 04' is 180 degrees, and the fifth bending portion 05' has different bending angles due to the separation of signal line a and signal line b, wherein the bending angle of signal line a is 180 degrees, and the bending angle of signal line b is 20 degrees.

[0076] When the wire is in the first bend 01', the a signal line of the wire is inside the b signal line, when the wire is in the second bend 02', the b signal line of the wire is inside the a signal line, when the wire is in the third bend 03', the a signal line of the wire is inside the b signal line, when the wire is in the fourth bend 04', the b signal line of the wire is inside the a signal line, when the wire is in the fifth bend 05', the b signal line and the a signal line of the wire are separated from each other and bent in different directions according to the needs of the contact point. After the wire is in the fifth bend 05', the tinned soft copper strands of the end conductor of the wire are exposed from the insulation layer. The end position of the wire is higher than the fifth bend 05'.

[0077] The conductor also includes a first straight portion 01, a second straight portion 02, a third straight portion 03, and a fourth straight portion 04. The first straight portion 01 is located between the first bending portion 01' and the second bending portion 02', the second straight portion 02 is located between the second bending portion 02' and the third bending portion 03', the third straight portion 03 is located between the third bending portion 03' and the fourth bending portion 04', and the fourth straight portion 04 is located between the fourth bending portion 04' and the fifth bending portion 05'.

[0078] The first straight part 01 and the second straight part 02 are subjected to weak adhesion treatment by mold heating or glue dripping; the second straight part 02 and the third straight part 03 are subjected to weak adhesion treatment by mold heating or glue dripping; the third straight part 03 and the fourth straight part 04 are subjected to strong adhesion treatment by mold heating or glue dripping; the degree of weak adhesion gradually increases from bottom to top until the top layer is strongly adhered, and the maximum tensile force that each layer can withstand is 5N, 10N, and 25N respectively, so as to ensure that the upper end of the wire and the HFC data cable of the new energy vehicle are basically not subjected to the tension caused by the thermal expansion and contraction of the battery cell. (All of them are removed after the weakly adhered wires of the first two layers are pulled apart and extended), thereby protecting the HFC data cable of the new energy vehicle from being pulled and damaged.

[0079] Each bending portion is also provided with a detour arc, and the curvature of each detour arc is greater than 2 times the outer diameter of a single wire, so as to improve the bending performance and resilience of the wire. The detour arc radius of the first bending portion 01' is 2.2mm, the detour arc radius of the second bending portion 02' is 3mm, and the detour arc radius of the third bending portion 03' is 2.2mm. The bending portions of each upper and lower layer are staggered to maximize the use of limited space, and there will be no interlacing and stacking between each layer of wires. Finally, the entire wire is kept in a space of width*length*thickness of 16*36*1.0mm.

[0080] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0081] It should be noted that, in this specification, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0082] The above is a detailed introduction to the new energy vehicle battery detection circuit with multi-bend wires provided by the utility model. This article uses specific examples to illustrate the principles and implementation methods of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A new energy vehicle battery detection circuit with multiple bending wires, characterized in that: Including a temperature sensor and a multi-bend folded wire; The temperature sensor is arranged on the monitored battery and is electrically connected to the signal transmission bus through the multi-bend folded wire; The multi-bend folded conductor includes a plurality of bending and circuitous segments and straight segments; The bending and circuitous segments and the straight segments are alternately arranged on the multi-bend folded conductor; The plurality of straight line segments are parallel to each other, and the insulating outer covering layers of adjacent straight line segments are bonded to each other; The bonding force between adjacent straight line segments is proportional to the distance between the corresponding bonding point and the temperature sensor, and the bonding force is less than a preset structural bearing threshold; The plurality of bending segments do not overlap in the arrangement direction of the plurality of straight segments.

2. The new energy vehicle battery detection circuit with multiple bending wires as claimed in claim 1, characterized in that: The bending and circuitous section is a circular arc section; The ratio of the arc radius of the arc segment to the outer diameter of the multi-bend folded conductor is not less than a preset arc stability threshold.

3. The new energy vehicle battery detection circuit with multiple bending wires as claimed in claim 1, characterized in that: The adhesive force ranges from 5N to 25N, including endpoint values.

4. The new energy vehicle battery detection circuit with multiple bending wires as claimed in claim 1, characterized in that: The insulating outer sheath of the multi-bend folded wire includes at least one of a cross-linked polyethylene layer, a polypropylene layer and a polyvinyl chloride layer; and / or The conductive core of the multi-bend folded conductor includes at least one of a bare copper stranded conductor core, a tinned copper stranded conductor core, a bare copper single conductor core and a tinned copper single conductor core.

5. The new energy vehicle battery detection circuit with multiple bending wires as claimed in claim 1, characterized in that: The insulating outer coverings of adjacent straight sections are heat treated to partially melt and bond to each other.

6. The new energy vehicle battery detection circuit with multiple bending wires as claimed in claim 1, characterized in that: Also comprising an adhesive layer; Adjacent straight line segments are bonded to each other via the adhesive layer.

7. The new energy vehicle battery detection circuit with multiple bending wires as claimed in claim 1, characterized in that: All the bending and detour segments have no overlap in the arrangement direction of the plurality of straight line segments.

8. The new energy vehicle battery detection circuit with multiple bending wires as claimed in claim 1, characterized in that: The temperature sensor is an NTC thermistor.

9. The new energy vehicle battery detection circuit with multiple bending wires according to any one of claims 1 to 8, characterized in that: All the straight segments and all the bending and circuitous segments of the multi-bend folded conductor are located in the same plane.

10. The new energy vehicle battery detection circuit with multiple bending wires as claimed in claim 9, characterized in that: The corresponding plane thickness of all the straight segments and all the bending and circuitous segments of the multi-bend folded conductor is less than 1.2 mm.

Images