Signal output terminal, signal transmission connector, battery and battery module

Abstract

The invention provides a signal output terminal. The signal output terminal comprises a base, a contact pin and a top cover, a pin hole and an accommodating groove are formed in the base; one end of the pin hole penetrates through one side, in the first direction, of the base, the containing groove is formed in the other side, in the first direction, of the base, the containing groove is communicated with the other end of the pin hole, the pin penetrates through the pin hole, one end of the pin extends out of the pin hole, and the other end of the pin is embedded into the pin hole; the top cover comprises a top cover body and a boss arranged on one side of the top cover body. The top cover body covers the base, and the boss is clamped and embedded in the containing groove. A wire hole is formed in the top cover, and a signal transmission line penetrates through the wire hole; the pin is used for connecting a signal transmission line; the signal output terminal provided by the invention collects battery state parameters and then reliably transmits the battery state parameters to a battery management system in real time, so that the health condition of the battery can be conveniently detected in real time; the top cover is arranged at the accommodating groove of the base, so that the contact pin hole is reliably sealed, the contact pin is limited, and the contact pin is prevented from moving.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and in particular to a signal output terminal, a signal transmission connector, a battery and a battery module. Background Art Signal transmission connectors play a vital role in battery systems. They are responsible for transmitting the electrical energy or signals inside the battery to external devices or systems.

[0002] Smart batteries usually need to monitor multiple battery properties, such as expansion force monitoring, temperature monitoring, internal resistance monitoring and voltage monitoring. Therefore, the battery cell needs to be electrically connected to the expansion force sensor, temperature sensor, internal resistance sensor and voltage sensor. During detection, it is necessary to connect to the expansion force sensor, temperature sensor, internal resistance sensor and voltage sensor respectively through multiple signal transmission lines, and transmit the various detected electrical signals to the battery management system (BMS). The two ends of the existing signal transmission connector are open structures. Although it is convenient to install the signal transmission line, it will cause the sealing performance of the battery to decrease. At the same time, the end of the signal transmission line cannot be fixed, and the signal transmission line is easy to fall off, affecting the accuracy of the detection. Therefore, how to overcome the above-mentioned technical problems and defects has become a key issue that needs to be solved. Summary of the invention

[0003] In view of the problems of poor sealing performance and poor fixation of existing signal transmission connectors, the present invention provides a signal output terminal, a signal transmission connector, a battery and a battery module.

[0004] The technical solution adopted by the present invention to solve the above technical problems is as follows: The first aspect of the present invention provides a signal output terminal, comprising a base, a pin and a top cover; the base is provided with a pin hole and a receiving groove; One end of the pin hole passes through one side of the base in the first direction, the receiving groove is provided at the other side of the base in the first direction, the receiving groove is communicated with the other end of the pin hole, the pin is provided in the pin hole, one end of the pin extends out of the end of the pin hole away from the receiving groove, and the other end of the pin is embedded in the end of the pin hole close to the receiving groove; The top cover includes a top cover body, and a boss arranged on one side of the top cover body in a first direction; the top cover body is sealingly covered on the base, and the boss is embedded in the accommodating groove; a wire hole is provided on the top cover, and the wire hole is used to pass the signal transmission line; the pin is located at one end in the pin hole, and is used to connect the signal transmission line and pass through one end of the wire hole between the base and the top cover.

[0005] Optionally, the pin hole includes a pin fixing hole and a pin countersunk hole; one end of the pin fixing hole passes through one side of the base, the other end of the pin fixing hole is connected with one end of the pin countersunk hole, and the other end of the pin countersunk hole is connected with the accommodating groove; the pin includes a pin body and a pin head, the pin body is passed through the pin fixing hole, and the pin head is embedded in the pin countersunk hole.

[0006] Optionally, the pin countersunk hole includes a first section and a second section; the first section is connected between the second section and the pin fixing hole; the hole wall of the second section and the hole wall of the pin fixing hole both extend along the thickness direction of the base, the first section is a tapered hole, and the size of the first section at one end away from the pin fixing hole is larger; one end of the pin head is embedded in the first section, and the other end is embedded in the second section.

[0007] Optionally, the pin fixing hole is a square hole, and the second section is a cylindrical hole; the pin body is a square body, and the pin head includes a cylindrical section and a transition section from the cylindrical section to the pin body; the cylindrical section of the pin head is inserted into the second section, and the transition section is inserted into the first section.

[0008] Optionally, the pin head is provided with a wire crimping groove for connecting the signal transmission line, the wire crimping groove faces the top cover, and the side of the wire crimping groove is provided with a notch penetrating the side of the pin head; An insertion pin introduction portion is provided at one end of the insertion pin body away from the insertion pin head, and an introduction slope is provided on the outer periphery of the insertion pin introduction portion.

[0009] Optionally, the pins are provided as at least one group, and each group of the pins includes two pins respectively used for electrically connecting the positive electrode and the negative electrode of the battery cell status monitoring sensor.

[0010] Optionally, the number of the accommodating grooves is one or more, and each of the accommodating grooves is connected to one or more of the pin holes.

[0011] Optionally, the plurality of pin holes are arranged in an array; the number of the pin holes is equal to the number of the accommodating slots, or the number of the pin holes is an integer multiple of the number of the accommodating slots.

[0012] Optionally, the accommodating groove includes a first groove, a second groove and a third groove, and the second groove communicates with a middle portion of the first groove and a middle portion of the third groove; The bosses are provided in two forms and are annular; one boss is provided in the first groove, and the other boss is provided in the third groove; Part of the pin holes are connected to the first slot, and part of the pin holes are connected to the third slot, and one end of the pin holes close to the receiving slot is exposed outside the boss; A wire passing notch is provided on the side of the boss, and the wire passing notch is connected with the second groove to form a wire passing channel opposite to the wire hole.

[0013] Optionally, the accommodating groove is H-shaped, and the boss is C-shaped.

[0014] Optionally, the top cover and the base are made of corrosion-resistant and high-temperature-resistant insulating hard plastic; one side of the top cover body in the first direction and one side of the base in the first direction are connected as a whole through a first welding surface.

[0015] Optionally, the boss and the side wall of the accommodating groove are connected as one body via a second welding surface.

[0016] Optionally, the base is made of insulating hard plastic, and the insulating hard plastic includes one or more of PPS, PET, POM, EP, HIPS, and PC; and / or, The material of the top cover is insulating hard plastic, and the insulating hard plastic includes one or more of PPS, PET, POM, EP, HIPS, and PC; and / or the material of the pin is one or more of pure copper, beryllium copper, and phosphor bronze.

[0017] A second aspect of the present invention provides a signal transmission connector, comprising the above-mentioned signal output terminal, signal transmission terminal and signal input terminal which are sealed and connected in sequence; The signal transmission terminal is used to be plugged into the cover plate, the signal input terminal is used to be arranged on the inner side of the cover plate, and the signal output terminal is used to be arranged on the outer side of the cover plate; the plug pins of the signal input terminal and the plug pins of the signal output terminal are inserted into the signal transmission terminal; The pin of the signal input terminal is connected to a cell status monitoring sensor located inside the battery through a first signal transmission line; The pin of the signal output terminal is connected to the battery management system through a second signal transmission line.

[0018] A third aspect of the present invention provides a battery, comprising a housing, a cover plate, a battery cell, a battery cell state monitoring sensor and the above-mentioned signal transmission connector; The battery cell is arranged in the shell, the battery cell state monitoring sensor is arranged on the battery cell, and the cover plate covers the shell.

[0019] A fourth aspect of the present invention provides a battery module, including a battery management system, and a plurality of the batteries described above, wherein the plurality of batteries are connected in series and / or in parallel; the battery management system is connected to the signal transmission connector of each of the batteries.

[0020] According to the signal output terminal provided by the present invention, a pin hole and a receiving groove are provided on the base, and a pin is provided in the pin hole; a boss is provided on one side of the top cover, and the boss is embedded in the receiving groove, which not only has a sealing effect on the receiving groove, but also prevents the pin from moving in the pin hole along the first direction on the base, and limits the pin to prevent the pin from moving; a wire hole is provided on the top cover, and one end of the signal transmission line passes through the wire hole and is sealed with the wire hole; because the signal transmission line is sealed with the wire hole, the side of the boss is sealed with the peripheral wall of the receiving groove, and external impurities are prevented from penetrating from the output end of the signal output terminal as much as possible; one end of the signal transmission line penetrates between the base and the boss and is connected to the end of the pin, and the pin is limited by the boss to ensure the connection reliability between the signal transmission line and the signal output terminal. The other end of the signal transmission line is connected to the battery management system through the wire hole, which is convenient for real-time monitoring of the health status of the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 is a schematic top view of a signal input terminal provided by an embodiment of the present invention; Figure 2 yes Figure 1 Schematic cross-sectional view of AA in the figure; Figure 3 yes Figure 1 A schematic cross-sectional view of the middle BB; Figure 4 is an exploded schematic diagram of a signal output terminal provided by an embodiment of the present invention; Figure 5 It is a structural schematic diagram of a base in a signal output terminal provided by an embodiment of the present invention; Figure 6 is a cross-sectional schematic diagram of a base in a signal output terminal provided by an embodiment of the present invention; Figure 7 It is a schematic diagram of the structure of the pins in the signal output terminal provided by one embodiment of the present invention; Figure 8 It is a schematic structural diagram of a top cover in a signal output terminal provided by an embodiment of the present invention; The reference numerals in the drawings of the specification are as follows: 1-base; 11-pin hole; 111-pin fixing hole; 112-pin countersunk hole; 1121-first section; 1122-second section; 12-accommodating groove; 121-first groove; 122-second groove; 123-third groove; 2-pin; 21-pin body; 211-pin introduction part; 212-introduction slope; 22-pin head; 221-cylindrical section; 222-transition section; 23-wire pressing groove; 231-notch; 3-top cover; 31-top cover body; 32-boss; 321-wire passing notch; 33-wire hole; 41-first welding surface; 42-second welding surface. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0024] In the description of the present invention, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] like Figure 1-Figure 8 As shown, in one embodiment, the present invention provides a signal output terminal, including a base 1, a pin 2 and a top cover 3; the base 1 is provided with a pin hole 11 and a receiving groove 12; One end of the pin hole 11 passes through one side of the base 1 in the first direction, the receiving groove 12 is provided at the other side of the base 1 in the first direction, the receiving groove 12 is communicated with the other end of the pin hole 11, the pin 2 is passed through the pin hole 11, one end of the pin 2 extends out of the end of the pin hole 11 away from the receiving groove 12, and the other end of the pin 2 is embedded in the end of the pin hole 11 close to the receiving groove 12; The top cover 3 includes a top cover body 31, and a boss 32 arranged on one side of the top cover body 31 in the first direction; the top cover body 31 is sealingly covered on the base 1, and the boss 32 is embedded in the accommodating groove 12; a wire hole 33 is provided on the top cover 3, and the wire hole 33 is used to pass the signal transmission line; one end of the pin 2 is located in the pin hole 11, and is used to connect the signal transmission line and pass through the wire hole 33 to the end between the base 1 and the top cover 3.

[0027] When in use, the portion of the pin 2 extending out of the pin hole 11 is plugged into the signal transmission terminal and connected to the signal transmission line and the signal transmission terminal.

[0028] Specifically, the secondary battery includes a battery housing, a battery cell is arranged in the battery housing, and a cover is arranged at the open end of the battery housing; in order to monitor the battery status in real time, the battery cell is usually electrically connected to a battery cell status monitoring sensor (such as an expansion force sensor, a temperature sensor, an internal resistance sensor, and a voltage sensor). Specifically, one or more sensors can be set according to the situation, and each sensor can be set as one or more, and each sensor can also be set as multiple, for collecting monitoring data at different positions of the battery cell.

[0029] The expansion force sensor is used to collect the expansion force of the battery cell and evaluate the health status of the power battery based on the expansion force; the temperature sensor is used to collect the temperature of the battery cell and evaluate the health status of the power battery based on the temperature; the internal resistance sensor is used to collect the internal resistance of a specific position of the battery cell and evaluate the health status of the power battery based on the internal resistance; the voltage sensor is used to collect the voltage of the battery cell and evaluate the health status of the power battery based on the internal resistance. Therefore, the health status of the battery can be evaluated by collecting the expansion force, temperature, voltage and internal resistance of the characteristic position of the battery cell through multiple sensors, so as to monitor the safety status of the battery cell in real time and reduce the safety risk of the battery cell.

[0030] The present invention provides a signal transmission connector on the cover plate to connect the cell status monitoring sensor to the battery management system so that the battery management system can monitor the health status of the battery; The signal output terminal of the present invention is used to transmit the expansion force, temperature, voltage and internal resistance at a characteristic position of the battery cell detected by the signal input terminal to a battery management system so that the battery management system can determine the health status of the battery cell.

[0031] The base 1 of the signal output terminal of the present invention is provided with a pin hole 11 and a receiving groove 12, and a pin 2 is provided in the pin hole 11; a boss 32 is protrudingly provided on one side of the top cover 3, and the boss 32 is embedded in the receiving groove 12, which not only seals the receiving groove 12, but also prevents the pin 2 from moving in the pin hole 11 along the first direction on the base 1, and limits the pin 2 to prevent the pin 2 from moving; The top cover 3 is provided with a wire hole 33, through which one end of the signal transmission wire passes and is sealed and connected to the wire hole 33; since the signal transmission wire is sealed and connected to the wire hole 33, the side of the boss 32 is sealed and connected to the peripheral wall of the receiving groove 12, so as to prevent foreign impurities from penetrating from the output end of the signal output terminal as much as possible; One end of the signal transmission line that passes between the base 1 and the boss 32 is connected to the end of the pin 2, and the boss 32 limits the pin 2 to ensure the connection reliability between the signal transmission line and the signal output terminal.

[0032] The other end of the signal transmission line is connected to the battery management system through the wire hole 33, so as to facilitate real-time monitoring of the health status of the battery cell.

[0033] The signal output terminal provided by the present invention collects the battery status parameters and then reliably transmits them to the battery management system in real time, so as to facilitate real-time detection of the battery health status; by providing a top cover 3 at the receiving groove 12 of the base 1, the pin hole 11 is reliably sealed, and the pin 2 is limited to prevent the pin 2 from moving.

[0034] like Figure 5-Figure 6 As shown, in one embodiment, the pin hole 11 includes a pin fixing hole 111 and a pin countersunk hole 112; one end of the pin fixing hole 111 passes through one side of the base 1, and the other end of the pin fixing hole 111 is connected to one end of the pin countersunk hole 112, and the other end of the pin countersunk hole 112 is connected to the accommodating groove 12; the pin 2 includes a pin body 21 and a pin head 22, the pin body 21 is inserted into the pin fixing hole 111, and the pin head 22 is embedded in the pin countersunk hole 112.

[0035] Specifically, the diameter of the pin fixing hole 111 is the same as the diameter of the pin body 21. When the pin body 21 is inserted into the pin fixing hole 111, the pin body 21 is prevented from shaking in the pin fixing hole 111; the pin countersunk hole 112 is used to fix the pin head 22; the partial structure of the pin body 21 and the pin head 22 are limited and fixed one by one through the pin fixing hole 111 and the pin countersunk hole 112.

[0036] like Figure 6As shown, in one embodiment, the pin countersunk hole 112 includes a first section 1121 and a second section 1122; the first section 1121 is connected between the second section 1122 and the pin fixing hole 111; the hole wall of the second section 1122 and the hole wall of the pin fixing hole 111 both extend along the thickness direction of the base 1, the first section 1121 is a tapered hole, and the size of the first section 1121 at one end away from the pin fixing hole 111 is larger; one end of the pin head 22 is embedded in the first section 1121, and the other end is embedded in the second section 1122.

[0037] Specifically, the first section 1121 is set as a tapered hole, which can guide the pin body 21 to be inserted into the second section 1122, and prevent the pin head 22 from moving into the pin fixing hole 111, and limit the length of the pin body 21 in the pin fixing hole 111. When there are multiple pins 2, the length of the end of the pin body 21 located outside the pin fixing hole 111 can be made the same, thereby effectively improving the reliability of data transmission.

[0038] The length of the other end of the pin head 22 is the same as the length of the second section 1122 of the pin countersunk hole 112, and the height of the boss 32 is the same as the depth of the receiving groove 12. When the boss 32 is embedded in the receiving groove 12, it not only seals the pin countersunk hole 112, but also prevents the pin 2 from moving in the pin hole 11 along the first direction on the base 1, thereby limiting the pin 2 and improving the accuracy of detection.

[0039] like Figure 1-Figure 5 As shown, in one embodiment, the pin fixing hole 111 is a square hole, and the second section 1122 is a cylindrical hole; the pin body 21 is a square body, and the pin head 22 includes a cylindrical section 221 and a transition section 222 transitioning from the cylindrical section 221 to the pin body 21; the cylindrical section 221 of the pin head 22 is inserted into the second section 1122, and the transition section 222 is inserted into the first section 1121.

[0040] Specifically, the pin fixing hole 111 is a square hole, which can limit the circumferential rotation of the pin body 21 in the pin fixing hole 111, thereby improving the stability of the pin body 21; the transition section 222 of the pin head 22 is inserted into the first section 1121, and the shape of the cylindrical section 221 of the pin head 22 is adapted to the shape of the second section 1122 of the pin countersunk hole 112, and the shape of the pin body 21 is adapted to the shape of the pin fixing hole 111, thereby increasing the fit between the pin 2 and the pin hole 11, improving the sealing and fixing reliability between the pin 2 and the base 1, and facilitating assembly.

[0041] like Figure 4 and Figure 7 As shown, in one embodiment, the pin head 22 is provided with a wire pressing groove 23 for connecting the signal transmission line, the wire pressing groove 23 faces the top cover 3, and the side of the wire pressing groove 23 is provided with a notch 231 that passes through the side of the pin head 22; An insertion pin introduction portion 211 is provided at one end of the insertion pin body 21 away from the insertion pin head 22 , and an introduction slope 212 is provided on the outer periphery of the insertion pin introduction portion 211 .

[0042] Specifically, after passing one end of the signal transmission line through the wire hole 33 of the top cover 3, insert one end of the signal transmission line into the notch 231 of the wire pressing groove 23 and press and fix it, so that one end of the signal transmission line contacts the pin head 22 to achieve electrical connection; then the end of the pin introduction part 211 of the pin body 21 is inserted into the set depth through the pin countersunk hole 112 end of the base 1 and the pin fixing hole 111. At this time, the pin head 22 is clamped in the pin countersunk hole 112, and part of the pin body 21 is clamped in the pin fixing hole 111; the outer periphery of the pin introduction part 211 is provided with an introduction slope 212 to facilitate the end of the pin introduction part 211 to pass through the pin fixing hole 111, thereby reducing the friction between the pin fixing hole 111.

[0043] like Figure 1-Figure 6 As shown, in one embodiment, the pins 2 are provided as at least one group, and each group of pins 2 includes two pins 2 respectively used for electrically connecting the positive electrode and the negative electrode of the battery cell status monitoring sensor.

[0044] By providing the positive electrode pin 2 and the negative electrode pin 2 connected to the battery cell status monitoring sensor, it is convenient to monitor the health status of the battery cell in real time.

[0045] like Figure 1-Figure 6 As shown, in one embodiment, the number of the receiving grooves 12 is one or more, and each receiving groove 12 is connected to one or more pin holes 11 .

[0046] In one embodiment, when the pins 2 are provided as a group, only one receiving groove 12 may be provided, and one receiving groove 12 is communicated with two pin holes 11; In one embodiment, when the pins 2 are provided in multiple groups, the receiving grooves 12 are provided in multiple numbers, and each receiving groove 12 is connected to a corresponding group of pin holes 11; or, the receiving grooves 12 are provided in two numbers, one of which is connected to the pin hole 11 where the pin 2 connected to the positive pole is placed; and the other receiving groove 12 is connected to the pin hole 11 where the pin 2 connected to the negative pole is placed.

[0047] In other embodiments, when the insertion pins 2 are provided in multiple groups, the receiving grooves 12 are provided in multiple groups, and each receiving groove 12 is correspondingly connected to multiple groups of insertion pin holes 11 .

[0048] like Figure 1-Figure 5 As shown, in one embodiment, a plurality of pin holes 11 are arranged in an array; the number of the pin holes 11 is equal to the number of the receiving slots 12 , or the number of the pin holes 11 is an integer multiple of the number of the receiving slots 12 .

[0049] In one embodiment, the arrangement of the pin holes 11 can be 2n; that is, the pin holes 11 are arranged in two rows, the pin holes 11 in the first row are used to place the pins 2 connected to the positive pole, and the pin holes 11 in the second row are used to place the pins 2 connected to the negative pole.

[0050] In a preferred embodiment, the arrangement of the pin holes 11 can be 2*4; that is, 4 groups of pins 2 are provided, and the 4 groups of pins 2 are electrically connected to the expansion force sensor, temperature sensor, internal resistance sensor and voltage sensor provided on the battery cell respectively. The expansion force, temperature, voltage and internal resistance of the characteristic position of the battery cell are collected by multiple sensors to evaluate the health status of the battery, so as to monitor the safety status of the battery cell in real time and reduce the safety risk of the battery cell.

[0051] In one embodiment, the number of the receiving slots 12 is equal to the number of the pin holes 11; In a preferred embodiment, the number of pin holes 11 is an integer multiple of the number of accommodating slots 12 ; that is, when the pins 2 are provided in multiple groups, the accommodating slots 12 are provided in multiple groups, and each accommodating slot 12 is connected to multiple groups of pin holes 11 .

[0052] like Figure 5-Figure 6 As shown, in one embodiment, the receiving groove 12 includes a first groove 121, a second groove 122 and a third groove 123, and the second groove 122 communicates with the middle part of the first groove 121 and the middle part of the third groove 123; There are two bosses 32 in an annular shape; one boss 32 is disposed in the first groove 121, and the other boss 32 is disposed in the third groove 123; Part of the pin hole 11 is connected to the first groove 121, and part of the pin hole 11 is connected to the third groove 123. One end of the pin hole 11 close to the receiving groove 12 is exposed outside the boss 32. A wire passing notch 321 is formed on the side of the boss 32 . The wire passing notch 321 is connected to the second groove 122 to form a wire passing channel opposite to the wire hole 33 .

[0053] In one embodiment, the arrangement of the pin holes 11 can be 2n; that is, the pin holes 11 are arranged in two rows, the pin holes 11 in the first row are used to place the pins 2 connected to the positive pole, and the pin holes 11 in the second row are used to place the pins 2 connected to the negative pole; at this time, the first groove 121 is connected to the pin holes 11 in the first row; the third groove 123 is connected to the pin holes 11 in the second row; the second groove 122 is connected to the middle part of the first groove 121 and the middle part of the third groove 123, so that the first groove 121, the second groove 122 and the third groove 123 are connected.

[0054] There are two bosses 32, and they are annular; one boss 32 is arranged in the first groove 121, and the other boss 32 is arranged in the third groove 123; the two bosses 32 form a wire passage at a position opposite to the second groove 122; so that when the two bosses 32 are closed with the first groove 121 and the third groove 123, the signal transmission line connected to the pin 2 in the first row of pin holes 11 and the signal transmission line connected to the pin 2 in the second row of pin holes 11 can still be gathered in the second groove 122; because the wire hole 33 is arranged opposite to the second groove 122, it is convenient to gather all the signal transmission lines into a bundle, and extend multiple signal transmission lines to the outside of the signal output terminal through the second groove 122 and the wire hole 33 and electrically connect with the battery management system, so as to avoid setting multiple wire holes 33 on the top cover 3, and multiple signal transmission lines pass through multiple wire holes 33 respectively, resulting in a problem of messy lines and difficulty in storage.

[0055] like Figure 4-Figure 5 and Figure 8 As shown, in one embodiment, the receiving groove 12 is H-shaped and the boss 32 is C-shaped.

[0056] Specifically, the second groove 122 communicates with the middle of the first groove 121 and the middle of the third groove 123 , so that the first groove 121 , the second groove 122 and the third groove 123 are communicated with each other to form an H shape.

[0057] The two bosses 32 are provided with wire-passing passages at positions opposite to the second grooves 122 , so that the bosses 32 are C-shaped.

[0058] When the two bosses 32 are closed with the first groove 121 and the third groove 123, the signal transmission lines connected to the pins 2 in the first row of pin holes 11 and the signal transmission lines connected to the pins 2 in the second row of pin holes 11 can still be gathered in the second groove 122; since the wire hole 33 and the second groove 122 are arranged opposite to each other, it is convenient to gather all the signal transmission lines into a bundle, and extend multiple signal transmission lines to the outside of the signal output terminal through the second groove 122 and the wire hole 33 and electrically connect them to the battery management system.

[0059] like Figure 1-Figure 3 As shown, in one embodiment, the top cover 3 and the base 1 are made of corrosion-resistant and high-temperature-resistant insulating hard plastic; one side of the top cover body 31 in the first direction is connected to one side of the base 1 in the first direction through a first welding surface 41.

[0060] Specifically, the lower surface of the top cover 3 is parallel to and fitted with the upper surface of the base 1 , and a first welding surface 41 is formed by ultrasonic treatment to bond and fix the lower surface of the top cover 3 and the upper surface of the base 1 to achieve a sealing effect.

[0061] like Figure 1 and Figure 3As shown, in one embodiment, the boss 32 and the side wall of the receiving groove 12 are connected as one body via a second welding surface 42 .

[0062] Specifically, the outer side surface of the boss 32 is arranged in contact with the side wall of the receiving groove 12, and the second welding surface 42 is formed by ultrasonic treatment to bond and fix the outer side surface of the boss 32 to the side wall of the receiving groove 12 to achieve a sealing effect.

[0063] In one embodiment, the base 1 is made of insulating hard plastic, and the insulating hard plastic includes one or more of PPS, PET, POM, EP, HIPS, and PC; and / or, The material of the top cover 3 is insulating hard plastic, and the insulating hard plastic includes one or more of PPS, PET, POM, EP, HIPS, and PC; and / or, The material of the pin 2 is one or more of pure copper, beryllium copper, and phosphor bronze.

[0064] The base 1 and the top cover 3 are made of insulating hard plastic, which has the functional characteristics of compression sealing; the first welding surface 41 and the second welding surface 42 are melted by ultrasonic treatment, so that the base 1 and the top cover 3 have a sealing effect.

[0065] The material of the plug pin 2 is one or more of pure copper, beryllium copper, and phosphor bronze; thus, the plug pin 2 has excellent electrical conductivity and improves the detection sensitivity of the signal output terminal.

[0066] A second aspect of the present invention provides a signal transmission connector, comprising the above-mentioned signal output terminal, signal transmission terminal and signal input terminal which are sealed and connected in sequence; The signal transmission terminal is used to be plugged into the cover plate, the signal input terminal is used to be arranged on the inner side of the cover plate, and the signal output terminal is used to be arranged on the outer side of the cover plate; the plug pins of the signal input terminal and the plug pins of the signal output terminal are inserted into the signal transmission terminal; The pin of the signal input terminal is connected to the battery cell status monitoring sensor located inside the battery through the first signal transmission line; The pin of the signal output terminal is connected to the battery management system through the second signal transmission line.

[0067] The present invention installs the signal transmission connector on the cover plate, and the signal input terminal has reliable sealing, which prevents impurities from entering the interior of the signal transmission connector from the signal input terminal. At the same time, the signal input terminal ensures that the first signal transmission line is reliably connected to the signal transmission connector, avoiding the arrangement of a wireless transmission signal transmission connector on the outside of the battery cover plate, thereby improving the reliability of data transmission, reducing the overall cost of the battery, and increasing profit margins and market share.

[0068] A third aspect of the present invention provides a battery, comprising a housing, a cover plate, a battery cell, a battery cell state monitoring sensor and the above-mentioned signal transmission connector; The battery cell is arranged in the shell, the battery cell state monitoring sensor is arranged on the battery cell, and the cover plate covers the shell.

[0069] The battery of the present invention comprises a battery shell, a battery cell and a cover plate, wherein the battery shell is provided with a battery cell, and the open end of the battery shell is provided with a cover plate; a signal transmission connector is provided on the cover plate; a signal transmission terminal is plugged into the cover plate, and a signal input terminal is located on the inner side of the cover plate, and is used to be electrically connected to battery cell status monitoring sensors such as an expansion force sensor, a temperature sensor, an internal resistance sensor and a voltage sensor; a signal output terminal is located on the outer side of the cover plate, and the signal output terminal is electrically connected to the signal input terminal, so that the expansion force electric signal, the temperature electric signal, the internal resistance electric signal and the voltage electric signal received by the signal input terminal are transmitted to the signal output terminal, and the signal output terminal transmits the above electric signals to the battery management system, which is used to judge whether the expansion force, temperature, voltage of the battery cell and the internal resistance at a characteristic position are normal values, thereby monitoring the health status of the battery in real time.

[0070] A fourth aspect of the present invention provides a battery module, including a battery management system, and a plurality of the above-mentioned batteries, wherein the plurality of batteries are connected in series and / or in parallel; the battery management system is connected to signal transmission connectors of each battery.

[0071] The battery module described in the embodiment of the present invention is provided with a plurality of batteries, and the plurality of batteries are connected in series and / or in parallel with each other, so as to improve the capacity of the battery module, and a battery management system is provided in the battery module, and the battery management system is electrically connected to the signal output terminal, and the signal output terminal is electrically connected to the signal input terminal, so that the expansion force electric signal, temperature electric signal, internal resistance electric signal and voltage electric signal received by the signal input terminal are transmitted to the battery management system, so as to determine whether the expansion force, temperature, voltage and internal resistance at the characteristic position of the battery cell are normal values, so as to monitor the health status of the battery in real time.

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A signal output terminal, characterized in that: It includes a base, a pin and a top cover; the base is provided with a pin hole and a receiving groove; One end of the pin hole passes through one side of the base in the first direction, the receiving groove is provided at the other side of the base in the first direction, the receiving groove is communicated with the other end of the pin hole, the pin is provided in the pin hole, one end of the pin extends out of the end of the pin hole away from the receiving groove, and the other end of the pin is embedded in the end of the pin hole close to the receiving groove; The top cover includes a top cover body, and a boss arranged on one side of the top cover body in a first direction; the top cover body is sealingly covered on the base, and the boss is embedded in the accommodating groove; a wire hole is provided on the top cover, and the wire hole is used to pass the signal transmission line; the pin is located at one end in the pin hole, and is used to connect the signal transmission line and pass through one end of the wire hole between the base and the top cover.

2. The signal output terminal according to claim 1, characterized in that: The pin hole includes a pin fixing hole and a pin countersunk hole; one end of the pin fixing hole passes through one side of the base, the other end of the pin fixing hole is connected with one end of the pin countersunk hole, and the other end of the pin countersunk hole is connected with the accommodating groove; the pin includes a pin body and a pin head, the pin body is inserted into the pin fixing hole, and the pin head is embedded in the pin countersunk hole.

3. The signal output terminal according to claim 2, characterized in that: The pin countersunk hole comprises a first section and a second section; The first section is connected between the second section and the pin fixing hole; the hole wall of the second section and the hole wall of the pin fixing hole both extend along the thickness direction of the base, the first section is a tapered hole, and the size of the first section at one end away from the pin fixing hole is larger; one end of the pin head is embedded in the first section, and the other end is embedded in the second section.

4. The signal input terminal according to claim 3, characterized in that: The pin fixing hole is a square hole, and the second section is a cylindrical hole; the pin body is a square body, and the pin head includes a cylindrical section and a transition section from the cylindrical section to the pin body; the cylindrical section of the pin head is inserted into the second section, and the transition section is inserted into the first section.

5. The signal output terminal according to claim 2, characterized in that: The pin head is provided with a wire pressing groove for connecting the signal transmission line, the wire pressing groove faces the top cover, and the side of the wire pressing groove is provided with a notch penetrating the side of the pin head; An insertion pin introduction portion is provided at one end of the insertion pin body away from the insertion pin head, and an introduction slope is provided on the outer periphery of the insertion pin introduction portion.

6. The signal output terminal according to claim 1, characterized in that: The pins are arranged in at least one group, and each group of the pins includes two pins respectively used for electrically connecting the positive electrode and the negative electrode of the battery cell status monitoring sensor.

7. The signal output terminal according to any one of claims 1 to 5, characterized in that: The receiving groove is provided as one or more, and each of the receiving grooves is communicated with one or more of the pin holes.

8. The signal output terminal according to claim 6, characterized in that: The plurality of pin holes are arranged in an array; the number of the pin holes is equal to the number of the receiving slots, or the number of the pin holes is an integer multiple of the number of the receiving slots.

9. The signal output terminal according to claim 6, characterized in that: The receiving groove comprises a first groove, a second groove and a third groove, wherein the second groove communicates with the middle part of the first groove and the middle part of the third groove; The bosses are provided in two forms and are annular; one boss is provided in the first groove, and the other boss is provided in the third groove; Part of the pin holes are connected to the first slot, and part of the pin holes are connected to the third slot, and one end of the pin holes close to the receiving slot is exposed outside the boss; A wire passing notch is provided on the side of the boss, and the wire passing notch is connected with the second groove to form a wire passing channel opposite to the wire hole.

10. The signal output terminal according to claim 8, characterized in that: The receiving groove is H-shaped, and the boss is C-shaped.

11. The signal output terminal according to claim 1, characterized in that: The top cover and the base are made of insulating hard plastic; one side of the top cover body in the first direction and one side of the base in the first direction are connected as one body through a first welding surface.

12. The signal output terminal according to claim 10, characterized in that: The boss and the side wall of the accommodating groove are connected as one body via a second welding surface.

13. The signal output terminal according to claim 1, characterized in that: The base is made of insulating hard plastic, and the insulating hard plastic includes one or more of PPS, PET, POM, EP, HIPS, and PC; and / or, The material of the top cover is insulating hard plastic, and the insulating hard plastic includes one or more of PPS, PET, POM, EP, HIPS, and PC; and / or, The material of the pin is one or more of pure copper, beryllium copper, and phosphor bronze.

14. A signal transmission connector, characterized in that: comprising a signal output terminal, a signal transmission terminal and a signal input terminal as claimed in any one of claims 1 to 15 which are sealed and connected in sequence; The signal transmission terminal is used to be plugged into the cover plate, the signal input terminal is used to be arranged on the inner side of the cover plate, and the signal output terminal is used to be arranged on the outer side of the cover plate; the plug pins of the signal input terminal and the plug pins of the signal output terminal are inserted into the signal transmission terminal; The pin of the signal input terminal is connected to a cell status monitoring sensor located inside the battery through a first signal transmission line; The pin of the signal output terminal is connected to the battery management system through a second signal transmission line.

15. A battery, characterized in that: It comprises a housing, a cover plate, a battery cell, a battery cell status monitoring sensor and a signal transmission connector as claimed in claim 13; The battery cell is arranged in the shell, the battery cell state monitoring sensor is arranged on the battery cell, and the cover plate covers the shell.

16. A battery module, characterized in that: It comprises a battery management system, and a plurality of batteries as claimed in claim 14, wherein the plurality of batteries are connected in series and / or in parallel; the battery management system is connected to the signal transmission connector of each of the batteries.

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